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[Emacs-diffs] Changes to emacs/src/xfns.c [Boehm-GC]
|
From: |
Dave Love |
|
Subject: |
[Emacs-diffs] Changes to emacs/src/xfns.c [Boehm-GC] |
|
Date: |
Wed, 11 Jun 2003 07:47:04 -0400 |
Index: emacs/src/xfns.c
diff -c /dev/null emacs/src/xfns.c:1.583.2.1
*** /dev/null Wed Jun 11 07:47:04 2003
--- emacs/src/xfns.c Wed Jun 11 07:47:03 2003
***************
*** 0 ****
--- 1,10876 ----
+ /* Functions for the X window system.
+ Copyright (C) 1989, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 01, 02, 03
+ Free Software Foundation.
+
+ This file is part of GNU Emacs.
+
+ GNU Emacs is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ GNU Emacs is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNU Emacs; see the file COPYING. If not, write to
+ the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+ #include <config.h>
+ #include <signal.h>
+ #include <stdio.h>
+ #include <math.h>
+
+ #ifdef HAVE_UNISTD_H
+ #include <unistd.h>
+ #endif
+
+ #ifdef BOEHM_GC
+ #include <gc.h>
+ #endif
+
+ /* This makes the fields of a Display accessible, in Xlib header files. */
+
+ #define XLIB_ILLEGAL_ACCESS
+
+ #include "lisp.h"
+ #include "xterm.h"
+ #include "frame.h"
+ #include "window.h"
+ #include "buffer.h"
+ #include "intervals.h"
+ #include "dispextern.h"
+ #include "keyboard.h"
+ #include "blockinput.h"
+ #include <epaths.h>
+ #include "charset.h"
+ #include "coding.h"
+ #include "fontset.h"
+ #include "systime.h"
+ #include "termhooks.h"
+ #include "atimer.h"
+
+ #ifdef HAVE_X_WINDOWS
+
+ #include <ctype.h>
+ #include <sys/types.h>
+ #include <sys/stat.h>
+
+ #ifndef VMS
+ #if 1 /* Used to be #ifdef EMACS_BITMAP_FILES, but this should always work.
*/
+ #include "bitmaps/gray.xbm"
+ #else
+ #include <X11/bitmaps/gray>
+ #endif
+ #else
+ #include "[.bitmaps]gray.xbm"
+ #endif
+
+ #ifdef USE_GTK
+ #include "gtkutil.h"
+ #endif
+
+ #ifdef USE_X_TOOLKIT
+ #include <X11/Shell.h>
+
+ #ifndef USE_MOTIF
+ #include <X11/Xaw/Paned.h>
+ #include <X11/Xaw/Label.h>
+ #endif /* USE_MOTIF */
+
+ #ifdef USG
+ #undef USG /* ####KLUDGE for Solaris 2.2 and up */
+ #include <X11/Xos.h>
+ #define USG
+ #else
+ #include <X11/Xos.h>
+ #endif
+
+ #include "widget.h"
+
+ #include "../lwlib/lwlib.h"
+
+ #ifdef USE_MOTIF
+ #include <Xm/Xm.h>
+ #include <Xm/DialogS.h>
+ #include <Xm/FileSB.h>
+ #endif
+
+ /* Do the EDITRES protocol if running X11R5
+ Exception: HP-UX (at least version A.09.05) has X11R5 without EditRes */
+
+ #if (XtSpecificationRelease >= 5) && !defined(NO_EDITRES)
+ #define HACK_EDITRES
+ extern void _XEditResCheckMessages ();
+ #endif /* R5 + Athena */
+
+ /* Unique id counter for widgets created by the Lucid Widget Library. */
+
+ extern LWLIB_ID widget_id_tick;
+
+ #ifdef USE_LUCID
+ /* This is part of a kludge--see lwlib/xlwmenu.c. */
+ extern XFontStruct *xlwmenu_default_font;
+ #endif
+
+ extern void free_frame_menubar ();
+ extern double atof ();
+
+ #ifdef USE_MOTIF
+
+ /* LessTif/Motif version info. */
+
+ static Lisp_Object Vmotif_version_string;
+
+ #endif /* USE_MOTIF */
+
+ #endif /* USE_X_TOOLKIT */
+
+ #ifdef HAVE_X11R4
+ #define MAXREQUEST(dpy) (XMaxRequestSize (dpy))
+ #else
+ #define MAXREQUEST(dpy) ((dpy)->max_request_size)
+ #endif
+
+ /* The gray bitmap `bitmaps/gray'. This is done because xterm.c uses
+ it, and including `bitmaps/gray' more than once is a problem when
+ config.h defines `static' as an empty replacement string. */
+
+ int gray_bitmap_width = gray_width;
+ int gray_bitmap_height = gray_height;
+ char *gray_bitmap_bits = gray_bits;
+
+ /* Non-zero means we're allowed to display an hourglass cursor. */
+
+ int display_hourglass_p;
+
+ /* The background and shape of the mouse pointer, and shape when not
+ over text or in the modeline. */
+
+ Lisp_Object Vx_pointer_shape, Vx_nontext_pointer_shape, Vx_mode_pointer_shape;
+ Lisp_Object Vx_hourglass_pointer_shape;
+
+ /* The shape when over mouse-sensitive text. */
+
+ Lisp_Object Vx_sensitive_text_pointer_shape;
+
+ /* If non-nil, the pointer shape to indicate that windows can be
+ dragged horizontally. */
+
+ Lisp_Object Vx_window_horizontal_drag_shape;
+
+ /* Color of chars displayed in cursor box. */
+
+ Lisp_Object Vx_cursor_fore_pixel;
+
+ /* Nonzero if using X. */
+
+ static int x_in_use;
+
+ /* Non nil if no window manager is in use. */
+
+ Lisp_Object Vx_no_window_manager;
+
+ /* Search path for bitmap files. */
+
+ Lisp_Object Vx_bitmap_file_path;
+
+ /* Regexp matching a font name whose width is the same as `PIXEL_SIZE'. */
+
+ Lisp_Object Vx_pixel_size_width_font_regexp;
+
+ Lisp_Object Qnone;
+ Lisp_Object Qsuppress_icon;
+ Lisp_Object Qundefined_color;
+ Lisp_Object Qcenter;
+ Lisp_Object Qcompound_text, Qcancel_timer;
+
+ /* In dispnew.c */
+
+ extern Lisp_Object Vwindow_system_version;
+
+ /* The below are defined in frame.c. */
+
+ #if GLYPH_DEBUG
+ int image_cache_refcount, dpyinfo_refcount;
+ #endif
+
+
+
+ /* Error if we are not connected to X. */
+
+ void
+ check_x ()
+ {
+ if (! x_in_use)
+ error ("X windows are not in use or not initialized");
+ }
+
+ /* Nonzero if we can use mouse menus.
+ You should not call this unless HAVE_MENUS is defined. */
+
+ int
+ have_menus_p ()
+ {
+ return x_in_use;
+ }
+
+ /* Extract a frame as a FRAME_PTR, defaulting to the selected frame
+ and checking validity for X. */
+
+ FRAME_PTR
+ check_x_frame (frame)
+ Lisp_Object frame;
+ {
+ FRAME_PTR f;
+
+ if (NILP (frame))
+ frame = selected_frame;
+ CHECK_LIVE_FRAME (frame);
+ f = XFRAME (frame);
+ if (! FRAME_X_P (f))
+ error ("Non-X frame used");
+ return f;
+ }
+
+ /* Let the user specify an X display with a frame.
+ nil stands for the selected frame--or, if that is not an X frame,
+ the first X display on the list. */
+
+ struct x_display_info *
+ check_x_display_info (frame)
+ Lisp_Object frame;
+ {
+ struct x_display_info *dpyinfo = NULL;
+
+ if (NILP (frame))
+ {
+ struct frame *sf = XFRAME (selected_frame);
+
+ if (FRAME_X_P (sf) && FRAME_LIVE_P (sf))
+ dpyinfo = FRAME_X_DISPLAY_INFO (sf);
+ else if (x_display_list != 0)
+ dpyinfo = x_display_list;
+ else
+ error ("X windows are not in use or not initialized");
+ }
+ else if (STRINGP (frame))
+ dpyinfo = x_display_info_for_name (frame);
+ else
+ {
+ FRAME_PTR f = check_x_frame (frame);
+ dpyinfo = FRAME_X_DISPLAY_INFO (f);
+ }
+
+ return dpyinfo;
+ }
+
+
+ /* Return the Emacs frame-object corresponding to an X window.
+ It could be the frame's main window or an icon window. */
+
+ /* This function can be called during GC, so use GC_xxx type test macros. */
+
+ struct frame *
+ x_window_to_frame (dpyinfo, wdesc)
+ struct x_display_info *dpyinfo;
+ int wdesc;
+ {
+ Lisp_Object tail, frame;
+ struct frame *f;
+
+ for (tail = Vframe_list; GC_CONSP (tail); tail = XCDR (tail))
+ {
+ frame = XCAR (tail);
+ if (!GC_FRAMEP (frame))
+ continue;
+ f = XFRAME (frame);
+ if (!FRAME_X_P (f) || FRAME_X_DISPLAY_INFO (f) != dpyinfo)
+ continue;
+ if (f->output_data.x->hourglass_window == wdesc)
+ return f;
+ #ifdef USE_X_TOOLKIT
+ if ((f->output_data.x->edit_widget
+ && XtWindow (f->output_data.x->edit_widget) == wdesc)
+ /* A tooltip frame? */
+ || (!f->output_data.x->edit_widget
+ && FRAME_X_WINDOW (f) == wdesc)
+ || f->output_data.x->icon_desc == wdesc)
+ return f;
+ #else /* not USE_X_TOOLKIT */
+ #ifdef USE_GTK
+ if (f->output_data.x->edit_widget)
+ {
+ GtkWidget *gwdesc = xg_win_to_widget (wdesc);
+ struct x_output *x = f->output_data.x;
+ if (gwdesc != 0 && gwdesc == x->edit_widget)
+ return f;
+ }
+ #endif /* USE_GTK */
+ if (FRAME_X_WINDOW (f) == wdesc
+ || f->output_data.x->icon_desc == wdesc)
+ return f;
+ #endif /* not USE_X_TOOLKIT */
+ }
+ return 0;
+ }
+
+ #if defined (USE_X_TOOLKIT) || defined (USE_GTK)
+ /* Like x_window_to_frame but also compares the window with the widget's
+ windows. */
+
+ struct frame *
+ x_any_window_to_frame (dpyinfo, wdesc)
+ struct x_display_info *dpyinfo;
+ int wdesc;
+ {
+ Lisp_Object tail, frame;
+ struct frame *f, *found;
+ struct x_output *x;
+
+ found = NULL;
+ for (tail = Vframe_list; GC_CONSP (tail) && !found; tail = XCDR (tail))
+ {
+ frame = XCAR (tail);
+ if (!GC_FRAMEP (frame))
+ continue;
+
+ f = XFRAME (frame);
+ if (FRAME_X_P (f) && FRAME_X_DISPLAY_INFO (f) == dpyinfo)
+ {
+ /* This frame matches if the window is any of its widgets. */
+ x = f->output_data.x;
+ if (x->hourglass_window == wdesc)
+ found = f;
+ else if (x->widget)
+ {
+ #ifdef USE_GTK
+ GtkWidget *gwdesc = xg_win_to_widget (wdesc);
+ if (gwdesc != 0
+ && (gwdesc == x->widget
+ || gwdesc == x->edit_widget
+ || gwdesc == x->vbox_widget
+ || gwdesc == x->menubar_widget))
+ found = f;
+ #else
+ if (wdesc == XtWindow (x->widget)
+ || wdesc == XtWindow (x->column_widget)
+ || wdesc == XtWindow (x->edit_widget))
+ found = f;
+ /* Match if the window is this frame's menubar. */
+ else if (lw_window_is_in_menubar (wdesc, x->menubar_widget))
+ found = f;
+ #endif
+ }
+ else if (FRAME_X_WINDOW (f) == wdesc)
+ /* A tooltip frame. */
+ found = f;
+ }
+ }
+
+ return found;
+ }
+
+ /* Likewise, but exclude the menu bar widget. */
+
+ struct frame *
+ x_non_menubar_window_to_frame (dpyinfo, wdesc)
+ struct x_display_info *dpyinfo;
+ int wdesc;
+ {
+ Lisp_Object tail, frame;
+ struct frame *f;
+ struct x_output *x;
+
+ for (tail = Vframe_list; GC_CONSP (tail); tail = XCDR (tail))
+ {
+ frame = XCAR (tail);
+ if (!GC_FRAMEP (frame))
+ continue;
+ f = XFRAME (frame);
+ if (!FRAME_X_P (f) || FRAME_X_DISPLAY_INFO (f) != dpyinfo)
+ continue;
+ x = f->output_data.x;
+ /* This frame matches if the window is any of its widgets. */
+ if (x->hourglass_window == wdesc)
+ return f;
+ else if (x->widget)
+ {
+ #ifdef USE_GTK
+ GtkWidget *gwdesc = xg_win_to_widget (wdesc);
+ if (gwdesc != 0
+ && (gwdesc == x->widget
+ || gwdesc == x->edit_widget
+ || gwdesc == x->vbox_widget))
+ return f;
+ #else
+ if (wdesc == XtWindow (x->widget)
+ || wdesc == XtWindow (x->column_widget)
+ || wdesc == XtWindow (x->edit_widget))
+ return f;
+ #endif
+ }
+ else if (FRAME_X_WINDOW (f) == wdesc)
+ /* A tooltip frame. */
+ return f;
+ }
+ return 0;
+ }
+
+ /* Likewise, but consider only the menu bar widget. */
+
+ struct frame *
+ x_menubar_window_to_frame (dpyinfo, wdesc)
+ struct x_display_info *dpyinfo;
+ int wdesc;
+ {
+ Lisp_Object tail, frame;
+ struct frame *f;
+ struct x_output *x;
+
+ for (tail = Vframe_list; GC_CONSP (tail); tail = XCDR (tail))
+ {
+ frame = XCAR (tail);
+ if (!GC_FRAMEP (frame))
+ continue;
+ f = XFRAME (frame);
+ if (!FRAME_X_P (f) || FRAME_X_DISPLAY_INFO (f) != dpyinfo)
+ continue;
+ x = f->output_data.x;
+ /* Match if the window is this frame's menubar. */
+ #ifdef USE_GTK
+ if (x->menubar_widget)
+ {
+ GtkWidget *gwdesc = xg_win_to_widget (wdesc);
+ int found = 0;
+
+ BLOCK_INPUT;
+ if (gwdesc != 0
+ && (gwdesc == x->menubar_widget
+ || gtk_widget_get_parent (gwdesc) == x->menubar_widget))
+ found = 1;
+ UNBLOCK_INPUT;
+ if (found) return f;
+ }
+ #else
+ if (x->menubar_widget
+ && lw_window_is_in_menubar (wdesc, x->menubar_widget))
+ return f;
+ #endif
+ }
+ return 0;
+ }
+
+ /* Return the frame whose principal (outermost) window is WDESC.
+ If WDESC is some other (smaller) window, we return 0. */
+
+ struct frame *
+ x_top_window_to_frame (dpyinfo, wdesc)
+ struct x_display_info *dpyinfo;
+ int wdesc;
+ {
+ Lisp_Object tail, frame;
+ struct frame *f;
+ struct x_output *x;
+
+ for (tail = Vframe_list; GC_CONSP (tail); tail = XCDR (tail))
+ {
+ frame = XCAR (tail);
+ if (!GC_FRAMEP (frame))
+ continue;
+ f = XFRAME (frame);
+ if (!FRAME_X_P (f) || FRAME_X_DISPLAY_INFO (f) != dpyinfo)
+ continue;
+ x = f->output_data.x;
+
+ if (x->widget)
+ {
+ /* This frame matches if the window is its topmost widget. */
+ #ifdef USE_GTK
+ GtkWidget *gwdesc = xg_win_to_widget (wdesc);
+ if (gwdesc == x->widget)
+ return f;
+ #else
+ if (wdesc == XtWindow (x->widget))
+ return f;
+ #if 0 /* I don't know why it did this,
+ but it seems logically wrong,
+ and it causes trouble for MapNotify events. */
+ /* Match if the window is this frame's menubar. */
+ if (x->menubar_widget
+ && wdesc == XtWindow (x->menubar_widget))
+ return f;
+ #endif
+ #endif
+ }
+ else if (FRAME_X_WINDOW (f) == wdesc)
+ /* Tooltip frame. */
+ return f;
+ }
+ return 0;
+ }
+ #endif /* USE_X_TOOLKIT || USE_GTK */
+
+
+
+ /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap
+ id, which is just an int that this section returns. Bitmaps are
+ reference counted so they can be shared among frames.
+
+ Bitmap indices are guaranteed to be > 0, so a negative number can
+ be used to indicate no bitmap.
+
+ If you use x_create_bitmap_from_data, then you must keep track of
+ the bitmaps yourself. That is, creating a bitmap from the same
+ data more than once will not be caught. */
+
+
+ /* Functions to access the contents of a bitmap, given an id. */
+
+ int
+ x_bitmap_height (f, id)
+ FRAME_PTR f;
+ int id;
+ {
+ return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].height;
+ }
+
+ int
+ x_bitmap_width (f, id)
+ FRAME_PTR f;
+ int id;
+ {
+ return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].width;
+ }
+
+ int
+ x_bitmap_pixmap (f, id)
+ FRAME_PTR f;
+ int id;
+ {
+ return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].pixmap;
+ }
+
+
+ /* Allocate a new bitmap record. Returns index of new record. */
+
+ static int
+ x_allocate_bitmap_record (f)
+ FRAME_PTR f;
+ {
+ struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+ int i;
+
+ if (dpyinfo->bitmaps == NULL)
+ {
+ dpyinfo->bitmaps_size = 10;
+ dpyinfo->bitmaps
+ = (struct x_bitmap_record *) xmalloc (dpyinfo->bitmaps_size * sizeof
(struct x_bitmap_record));
+ dpyinfo->bitmaps_last = 1;
+ return 1;
+ }
+
+ if (dpyinfo->bitmaps_last < dpyinfo->bitmaps_size)
+ return ++dpyinfo->bitmaps_last;
+
+ for (i = 0; i < dpyinfo->bitmaps_size; ++i)
+ if (dpyinfo->bitmaps[i].refcount == 0)
+ return i + 1;
+
+ dpyinfo->bitmaps_size *= 2;
+ dpyinfo->bitmaps
+ = (struct x_bitmap_record *) xrealloc (dpyinfo->bitmaps,
+ dpyinfo->bitmaps_size * sizeof
(struct x_bitmap_record));
+ return ++dpyinfo->bitmaps_last;
+ }
+
+ /* Add one reference to the reference count of the bitmap with id ID. */
+
+ void
+ x_reference_bitmap (f, id)
+ FRAME_PTR f;
+ int id;
+ {
+ ++FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].refcount;
+ }
+
+ /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS.
*/
+
+ int
+ x_create_bitmap_from_data (f, bits, width, height)
+ struct frame *f;
+ char *bits;
+ unsigned int width, height;
+ {
+ struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+ Pixmap bitmap;
+ int id;
+
+ bitmap = XCreateBitmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ bits, width, height);
+
+
+
+ if (! bitmap)
+ return -1;
+
+ id = x_allocate_bitmap_record (f);
+ dpyinfo->bitmaps[id - 1].pixmap = bitmap;
+ dpyinfo->bitmaps[id - 1].file = NULL;
+ dpyinfo->bitmaps[id - 1].refcount = 1;
+ dpyinfo->bitmaps[id - 1].depth = 1;
+ dpyinfo->bitmaps[id - 1].height = height;
+ dpyinfo->bitmaps[id - 1].width = width;
+
+ return id;
+ }
+
+ /* Create bitmap from file FILE for frame F. */
+
+ int
+ x_create_bitmap_from_file (f, file)
+ struct frame *f;
+ Lisp_Object file;
+ {
+ struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+ unsigned int width, height;
+ Pixmap bitmap;
+ int xhot, yhot, result, id;
+ Lisp_Object found;
+ int fd;
+ char *filename;
+
+ /* Look for an existing bitmap with the same name. */
+ for (id = 0; id < dpyinfo->bitmaps_last; ++id)
+ {
+ if (dpyinfo->bitmaps[id].refcount
+ && dpyinfo->bitmaps[id].file
+ && !strcmp (dpyinfo->bitmaps[id].file, (char *) SDATA (file)))
+ {
+ ++dpyinfo->bitmaps[id].refcount;
+ return id + 1;
+ }
+ }
+
+ /* Search bitmap-file-path for the file, if appropriate. */
+ fd = openp (Vx_bitmap_file_path, file, Qnil, &found, Qnil);
+ if (fd < 0)
+ return -1;
+ emacs_close (fd);
+
+ filename = (char *) SDATA (found);
+
+ result = XReadBitmapFile (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ filename, &width, &height, &bitmap, &xhot, &yhot);
+ if (result != BitmapSuccess)
+ return -1;
+
+ id = x_allocate_bitmap_record (f);
+ dpyinfo->bitmaps[id - 1].pixmap = bitmap;
+ dpyinfo->bitmaps[id - 1].refcount = 1;
+ dpyinfo->bitmaps[id - 1].file
+ = (char *) xmalloc (SBYTES (file) + 1);
+ dpyinfo->bitmaps[id - 1].depth = 1;
+ dpyinfo->bitmaps[id - 1].height = height;
+ dpyinfo->bitmaps[id - 1].width = width;
+ strcpy (dpyinfo->bitmaps[id - 1].file, SDATA (file));
+
+ return id;
+ }
+
+ /* Remove reference to bitmap with id number ID. */
+
+ void
+ x_destroy_bitmap (f, id)
+ FRAME_PTR f;
+ int id;
+ {
+ struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+
+ if (id > 0)
+ {
+ --dpyinfo->bitmaps[id - 1].refcount;
+ if (dpyinfo->bitmaps[id - 1].refcount == 0)
+ {
+ BLOCK_INPUT;
+ XFreePixmap (FRAME_X_DISPLAY (f), dpyinfo->bitmaps[id - 1].pixmap);
+ if (dpyinfo->bitmaps[id - 1].file)
+ {
+ xfree (dpyinfo->bitmaps[id - 1].file);
+ dpyinfo->bitmaps[id - 1].file = NULL;
+ }
+ UNBLOCK_INPUT;
+ }
+ }
+ }
+
+ /* Free all the bitmaps for the display specified by DPYINFO. */
+
+ static void
+ x_destroy_all_bitmaps (dpyinfo)
+ struct x_display_info *dpyinfo;
+ {
+ int i;
+ for (i = 0; i < dpyinfo->bitmaps_last; i++)
+ if (dpyinfo->bitmaps[i].refcount > 0)
+ {
+ XFreePixmap (dpyinfo->display, dpyinfo->bitmaps[i].pixmap);
+ if (dpyinfo->bitmaps[i].file)
+ xfree (dpyinfo->bitmaps[i].file);
+ }
+ dpyinfo->bitmaps_last = 0;
+ }
+
+
+ static Lisp_Object unwind_create_frame P_ ((Lisp_Object));
+ static Lisp_Object unwind_create_tip_frame P_ ((Lisp_Object));
+ static void x_disable_image P_ ((struct frame *, struct image *));
+
+ void x_set_foreground_color P_ ((struct frame *, Lisp_Object, Lisp_Object));
+ static void x_set_wait_for_wm P_ ((struct frame *, Lisp_Object, Lisp_Object));
+ void x_set_background_color P_ ((struct frame *, Lisp_Object, Lisp_Object));
+ void x_set_mouse_color P_ ((struct frame *, Lisp_Object, Lisp_Object));
+ void x_set_cursor_color P_ ((struct frame *, Lisp_Object, Lisp_Object));
+ void x_set_border_color P_ ((struct frame *, Lisp_Object, Lisp_Object));
+ void x_set_cursor_type P_ ((struct frame *, Lisp_Object, Lisp_Object));
+ void x_set_icon_type P_ ((struct frame *, Lisp_Object, Lisp_Object));
+ void x_set_icon_name P_ ((struct frame *, Lisp_Object, Lisp_Object));
+ void x_explicitly_set_name P_ ((struct frame *, Lisp_Object, Lisp_Object));
+ void x_set_menu_bar_lines P_ ((struct frame *, Lisp_Object, Lisp_Object));
+ void x_set_title P_ ((struct frame *, Lisp_Object, Lisp_Object));
+ void x_set_tool_bar_lines P_ ((struct frame *, Lisp_Object, Lisp_Object));
+ void x_set_scroll_bar_foreground P_ ((struct frame *, Lisp_Object,
+ Lisp_Object));
+ void x_set_scroll_bar_background P_ ((struct frame *, Lisp_Object,
+ Lisp_Object));
+ static Lisp_Object x_default_scroll_bar_color_parameter P_ ((struct frame *,
+ Lisp_Object,
+ Lisp_Object,
+ char *, char *,
+ int));
+ static void x_edge_detection P_ ((struct frame *, struct image *, Lisp_Object,
+ Lisp_Object));
+ static void init_color_table P_ ((void));
+ static void free_color_table P_ ((void));
+ static unsigned long *colors_in_color_table P_ ((int *n));
+ static unsigned long lookup_rgb_color P_ ((struct frame *f, int r, int g, int
b));
+ static unsigned long lookup_pixel_color P_ ((struct frame *f, unsigned long
p));
+
+
+
+
+
+ /* Store the screen positions of frame F into XPTR and YPTR.
+ These are the positions of the containing window manager window,
+ not Emacs's own window. */
+
+ void
+ x_real_positions (f, xptr, yptr)
+ FRAME_PTR f;
+ int *xptr, *yptr;
+ {
+ int win_x, win_y, outer_x, outer_y;
+ int real_x = 0, real_y = 0;
+ int had_errors = 0;
+ Window win = f->output_data.x->parent_desc;
+
+ int count;
+
+ BLOCK_INPUT;
+
+ count = x_catch_errors (FRAME_X_DISPLAY (f));
+
+ if (win == FRAME_X_DISPLAY_INFO (f)->root_window)
+ win = FRAME_OUTER_WINDOW (f);
+
+ /* This loop traverses up the containment tree until we hit the root
+ window. Window managers may intersect many windows between our window
+ and the root window. The window we find just before the root window
+ should be the outer WM window. */
+ for (;;)
+ {
+ Window wm_window, rootw;
+ Window *tmp_children;
+ unsigned int tmp_nchildren;
+ int success;
+
+ success = XQueryTree (FRAME_X_DISPLAY (f), win, &rootw,
+ &wm_window, &tmp_children, &tmp_nchildren);
+
+ had_errors = x_had_errors_p (FRAME_X_DISPLAY (f));
+
+ /* Don't free tmp_children if XQueryTree failed. */
+ if (! success)
+ break;
+
+ XFree ((char *) tmp_children);
+
+ if (wm_window == rootw || had_errors)
+ break;
+
+ win = wm_window;
+ }
+
+ if (! had_errors)
+ {
+ int ign;
+ Window child, rootw;
+
+ /* Get the real coordinates for the WM window upper left corner */
+ XGetGeometry (FRAME_X_DISPLAY (f), win,
+ &rootw, &real_x, &real_y, &ign, &ign, &ign, &ign);
+
+ /* Translate real coordinates to coordinates relative to our
+ window. For our window, the upper left corner is 0, 0.
+ Since the upper left corner of the WM window is outside
+ our window, win_x and win_y will be negative:
+
+ ------------------ ---> x
+ | title |
+ | ----------------- v y
+ | | our window
+ */
+ XTranslateCoordinates (FRAME_X_DISPLAY (f),
+
+ /* From-window, to-window. */
+ FRAME_X_DISPLAY_INFO (f)->root_window,
+ FRAME_X_WINDOW (f),
+
+ /* From-position, to-position. */
+ real_x, real_y, &win_x, &win_y,
+
+ /* Child of win. */
+ &child);
+
+ if (FRAME_X_WINDOW (f) == FRAME_OUTER_WINDOW (f))
+ {
+ outer_x = win_x;
+ outer_y = win_y;
+ }
+ else
+ {
+ XTranslateCoordinates (FRAME_X_DISPLAY (f),
+
+ /* From-window, to-window. */
+ FRAME_X_DISPLAY_INFO (f)->root_window,
+ FRAME_OUTER_WINDOW (f),
+
+ /* From-position, to-position. */
+ real_x, real_y, &outer_x, &outer_y,
+
+ /* Child of win. */
+ &child);
+ }
+
+ had_errors = x_had_errors_p (FRAME_X_DISPLAY (f));
+ }
+
+ x_uncatch_errors (FRAME_X_DISPLAY (f), count);
+
+ UNBLOCK_INPUT;
+
+ if (had_errors) return;
+
+ f->x_pixels_diff = -win_x;
+ f->y_pixels_diff = -win_y;
+
+ FRAME_X_OUTPUT (f)->x_pixels_outer_diff = -outer_x;
+ FRAME_X_OUTPUT (f)->y_pixels_outer_diff = -outer_y;
+
+ *xptr = real_x;
+ *yptr = real_y;
+ }
+
+
+
+
+ /* Gamma-correct COLOR on frame F. */
+
+ void
+ gamma_correct (f, color)
+ struct frame *f;
+ XColor *color;
+ {
+ if (f->gamma)
+ {
+ color->red = pow (color->red / 65535.0, f->gamma) * 65535.0 + 0.5;
+ color->green = pow (color->green / 65535.0, f->gamma) * 65535.0 + 0.5;
+ color->blue = pow (color->blue / 65535.0, f->gamma) * 65535.0 + 0.5;
+ }
+ }
+
+
+ /* Decide if color named COLOR_NAME is valid for use on frame F. If
+ so, return the RGB values in COLOR. If ALLOC_P is non-zero,
+ allocate the color. Value is zero if COLOR_NAME is invalid, or
+ no color could be allocated. */
+
+ int
+ x_defined_color (f, color_name, color, alloc_p)
+ struct frame *f;
+ char *color_name;
+ XColor *color;
+ int alloc_p;
+ {
+ int success_p;
+ Display *dpy = FRAME_X_DISPLAY (f);
+ Colormap cmap = FRAME_X_COLORMAP (f);
+
+ BLOCK_INPUT;
+ success_p = XParseColor (dpy, cmap, color_name, color);
+ if (success_p && alloc_p)
+ success_p = x_alloc_nearest_color (f, cmap, color);
+ UNBLOCK_INPUT;
+
+ return success_p;
+ }
+
+
+ /* Return the pixel color value for color COLOR_NAME on frame F. If F
+ is a monochrome frame, return MONO_COLOR regardless of what ARG says.
+ Signal an error if color can't be allocated. */
+
+ int
+ x_decode_color (f, color_name, mono_color)
+ FRAME_PTR f;
+ Lisp_Object color_name;
+ int mono_color;
+ {
+ XColor cdef;
+
+ CHECK_STRING (color_name);
+
+ #if 0 /* Don't do this. It's wrong when we're not using the default
+ colormap, it makes freeing difficult, and it's probably not
+ an important optimization. */
+ if (strcmp (SDATA (color_name), "black") == 0)
+ return BLACK_PIX_DEFAULT (f);
+ else if (strcmp (SDATA (color_name), "white") == 0)
+ return WHITE_PIX_DEFAULT (f);
+ #endif
+
+ /* Return MONO_COLOR for monochrome frames. */
+ if (FRAME_X_DISPLAY_INFO (f)->n_planes == 1)
+ return mono_color;
+
+ /* x_defined_color is responsible for coping with failures
+ by looking for a near-miss. */
+ if (x_defined_color (f, SDATA (color_name), &cdef, 1))
+ return cdef.pixel;
+
+ Fsignal (Qerror, Fcons (build_string ("Undefined color"),
+ Fcons (color_name, Qnil)));
+ return 0;
+ }
+
+
+
+ /* Change the `wait-for-wm' frame parameter of frame F. OLD_VALUE is
+ the previous value of that parameter, NEW_VALUE is the new value.
+ See also the comment of wait_for_wm in struct x_output. */
+
+ static void
+ x_set_wait_for_wm (f, new_value, old_value)
+ struct frame *f;
+ Lisp_Object new_value, old_value;
+ {
+ f->output_data.x->wait_for_wm = !NILP (new_value);
+ }
+
+
+ /* Functions called only from `x_set_frame_param'
+ to set individual parameters.
+
+ If FRAME_X_WINDOW (f) is 0,
+ the frame is being created and its X-window does not exist yet.
+ In that case, just record the parameter's new value
+ in the standard place; do not attempt to change the window. */
+
+ void
+ x_set_foreground_color (f, arg, oldval)
+ struct frame *f;
+ Lisp_Object arg, oldval;
+ {
+ struct x_output *x = f->output_data.x;
+ unsigned long fg, old_fg;
+
+ fg = x_decode_color (f, arg, BLACK_PIX_DEFAULT (f));
+ old_fg = x->foreground_pixel;
+ x->foreground_pixel = fg;
+
+ if (FRAME_X_WINDOW (f) != 0)
+ {
+ Display *dpy = FRAME_X_DISPLAY (f);
+
+ BLOCK_INPUT;
+ XSetForeground (dpy, x->normal_gc, fg);
+ XSetBackground (dpy, x->reverse_gc, fg);
+
+ if (x->cursor_pixel == old_fg)
+ {
+ unload_color (f, x->cursor_pixel);
+ x->cursor_pixel = x_copy_color (f, fg);
+ XSetBackground (dpy, x->cursor_gc, x->cursor_pixel);
+ }
+
+ UNBLOCK_INPUT;
+
+ update_face_from_frame_parameter (f, Qforeground_color, arg);
+
+ if (FRAME_VISIBLE_P (f))
+ redraw_frame (f);
+ }
+
+ unload_color (f, old_fg);
+ }
+
+ void
+ x_set_background_color (f, arg, oldval)
+ struct frame *f;
+ Lisp_Object arg, oldval;
+ {
+ struct x_output *x = f->output_data.x;
+ unsigned long bg;
+
+ bg = x_decode_color (f, arg, WHITE_PIX_DEFAULT (f));
+ unload_color (f, x->background_pixel);
+ x->background_pixel = bg;
+
+ if (FRAME_X_WINDOW (f) != 0)
+ {
+ Display *dpy = FRAME_X_DISPLAY (f);
+
+ BLOCK_INPUT;
+ XSetBackground (dpy, x->normal_gc, bg);
+ XSetForeground (dpy, x->reverse_gc, bg);
+ XSetWindowBackground (dpy, FRAME_X_WINDOW (f), bg);
+ XSetForeground (dpy, x->cursor_gc, bg);
+
+ #ifdef USE_GTK
+ xg_set_background_color (f, bg);
+ #endif
+
+ #ifndef USE_TOOLKIT_SCROLL_BARS /* Turns out to be annoying with
+ toolkit scroll bars. */
+ {
+ Lisp_Object bar;
+ for (bar = FRAME_SCROLL_BARS (f);
+ !NILP (bar);
+ bar = XSCROLL_BAR (bar)->next)
+ {
+ Window window = SCROLL_BAR_X_WINDOW (XSCROLL_BAR (bar));
+ XSetWindowBackground (dpy, window, bg);
+ }
+ }
+ #endif /* USE_TOOLKIT_SCROLL_BARS */
+
+ UNBLOCK_INPUT;
+ update_face_from_frame_parameter (f, Qbackground_color, arg);
+
+ if (FRAME_VISIBLE_P (f))
+ redraw_frame (f);
+ }
+ }
+
+ void
+ x_set_mouse_color (f, arg, oldval)
+ struct frame *f;
+ Lisp_Object arg, oldval;
+ {
+ struct x_output *x = f->output_data.x;
+ Display *dpy = FRAME_X_DISPLAY (f);
+ Cursor cursor, nontext_cursor, mode_cursor, hand_cursor;
+ Cursor hourglass_cursor, horizontal_drag_cursor;
+ int count;
+ unsigned long pixel = x_decode_color (f, arg, BLACK_PIX_DEFAULT (f));
+ unsigned long mask_color = x->background_pixel;
+
+ /* Don't let pointers be invisible. */
+ if (mask_color == pixel)
+ {
+ x_free_colors (f, &pixel, 1);
+ pixel = x_copy_color (f, x->foreground_pixel);
+ }
+
+ unload_color (f, x->mouse_pixel);
+ x->mouse_pixel = pixel;
+
+ BLOCK_INPUT;
+
+ /* It's not okay to crash if the user selects a screwy cursor. */
+ count = x_catch_errors (dpy);
+
+ if (!NILP (Vx_pointer_shape))
+ {
+ CHECK_NUMBER (Vx_pointer_shape);
+ cursor = XCreateFontCursor (dpy, XINT (Vx_pointer_shape));
+ }
+ else
+ cursor = XCreateFontCursor (dpy, XC_xterm);
+ x_check_errors (dpy, "bad text pointer cursor: %s");
+
+ if (!NILP (Vx_nontext_pointer_shape))
+ {
+ CHECK_NUMBER (Vx_nontext_pointer_shape);
+ nontext_cursor
+ = XCreateFontCursor (dpy, XINT (Vx_nontext_pointer_shape));
+ }
+ else
+ nontext_cursor = XCreateFontCursor (dpy, XC_left_ptr);
+ x_check_errors (dpy, "bad nontext pointer cursor: %s");
+
+ if (!NILP (Vx_hourglass_pointer_shape))
+ {
+ CHECK_NUMBER (Vx_hourglass_pointer_shape);
+ hourglass_cursor
+ = XCreateFontCursor (dpy, XINT (Vx_hourglass_pointer_shape));
+ }
+ else
+ hourglass_cursor = XCreateFontCursor (dpy, XC_watch);
+ x_check_errors (dpy, "bad hourglass pointer cursor: %s");
+
+ x_check_errors (dpy, "bad nontext pointer cursor: %s");
+ if (!NILP (Vx_mode_pointer_shape))
+ {
+ CHECK_NUMBER (Vx_mode_pointer_shape);
+ mode_cursor = XCreateFontCursor (dpy, XINT (Vx_mode_pointer_shape));
+ }
+ else
+ mode_cursor = XCreateFontCursor (dpy, XC_xterm);
+ x_check_errors (dpy, "bad modeline pointer cursor: %s");
+
+ if (!NILP (Vx_sensitive_text_pointer_shape))
+ {
+ CHECK_NUMBER (Vx_sensitive_text_pointer_shape);
+ hand_cursor
+ = XCreateFontCursor (dpy, XINT (Vx_sensitive_text_pointer_shape));
+ }
+ else
+ hand_cursor = XCreateFontCursor (dpy, XC_hand2);
+
+ if (!NILP (Vx_window_horizontal_drag_shape))
+ {
+ CHECK_NUMBER (Vx_window_horizontal_drag_shape);
+ horizontal_drag_cursor
+ = XCreateFontCursor (dpy, XINT (Vx_window_horizontal_drag_shape));
+ }
+ else
+ horizontal_drag_cursor
+ = XCreateFontCursor (dpy, XC_sb_h_double_arrow);
+
+ /* Check and report errors with the above calls. */
+ x_check_errors (dpy, "can't set cursor shape: %s");
+ x_uncatch_errors (dpy, count);
+
+ {
+ XColor fore_color, back_color;
+
+ fore_color.pixel = x->mouse_pixel;
+ x_query_color (f, &fore_color);
+ back_color.pixel = mask_color;
+ x_query_color (f, &back_color);
+
+ XRecolorCursor (dpy, cursor, &fore_color, &back_color);
+ XRecolorCursor (dpy, nontext_cursor, &fore_color, &back_color);
+ XRecolorCursor (dpy, mode_cursor, &fore_color, &back_color);
+ XRecolorCursor (dpy, hand_cursor, &fore_color, &back_color);
+ XRecolorCursor (dpy, hourglass_cursor, &fore_color, &back_color);
+ XRecolorCursor (dpy, horizontal_drag_cursor, &fore_color, &back_color);
+ }
+
+ if (FRAME_X_WINDOW (f) != 0)
+ XDefineCursor (dpy, FRAME_X_WINDOW (f), cursor);
+
+ if (cursor != x->text_cursor
+ && x->text_cursor != 0)
+ XFreeCursor (dpy, x->text_cursor);
+ x->text_cursor = cursor;
+
+ if (nontext_cursor != x->nontext_cursor
+ && x->nontext_cursor != 0)
+ XFreeCursor (dpy, x->nontext_cursor);
+ x->nontext_cursor = nontext_cursor;
+
+ if (hourglass_cursor != x->hourglass_cursor
+ && x->hourglass_cursor != 0)
+ XFreeCursor (dpy, x->hourglass_cursor);
+ x->hourglass_cursor = hourglass_cursor;
+
+ if (mode_cursor != x->modeline_cursor
+ && x->modeline_cursor != 0)
+ XFreeCursor (dpy, f->output_data.x->modeline_cursor);
+ x->modeline_cursor = mode_cursor;
+
+ if (hand_cursor != x->hand_cursor
+ && x->hand_cursor != 0)
+ XFreeCursor (dpy, x->hand_cursor);
+ x->hand_cursor = hand_cursor;
+
+ if (horizontal_drag_cursor != x->horizontal_drag_cursor
+ && x->horizontal_drag_cursor != 0)
+ XFreeCursor (dpy, x->horizontal_drag_cursor);
+ x->horizontal_drag_cursor = horizontal_drag_cursor;
+
+ XFlush (dpy);
+ UNBLOCK_INPUT;
+
+ update_face_from_frame_parameter (f, Qmouse_color, arg);
+ }
+
+ void
+ x_set_cursor_color (f, arg, oldval)
+ struct frame *f;
+ Lisp_Object arg, oldval;
+ {
+ unsigned long fore_pixel, pixel;
+ int fore_pixel_allocated_p = 0, pixel_allocated_p = 0;
+ struct x_output *x = f->output_data.x;
+
+ if (!NILP (Vx_cursor_fore_pixel))
+ {
+ fore_pixel = x_decode_color (f, Vx_cursor_fore_pixel,
+ WHITE_PIX_DEFAULT (f));
+ fore_pixel_allocated_p = 1;
+ }
+ else
+ fore_pixel = x->background_pixel;
+
+ pixel = x_decode_color (f, arg, BLACK_PIX_DEFAULT (f));
+ pixel_allocated_p = 1;
+
+ /* Make sure that the cursor color differs from the background color. */
+ if (pixel == x->background_pixel)
+ {
+ if (pixel_allocated_p)
+ {
+ x_free_colors (f, &pixel, 1);
+ pixel_allocated_p = 0;
+ }
+
+ pixel = x->mouse_pixel;
+ if (pixel == fore_pixel)
+ {
+ if (fore_pixel_allocated_p)
+ {
+ x_free_colors (f, &fore_pixel, 1);
+ fore_pixel_allocated_p = 0;
+ }
+ fore_pixel = x->background_pixel;
+ }
+ }
+
+ unload_color (f, x->cursor_foreground_pixel);
+ if (!fore_pixel_allocated_p)
+ fore_pixel = x_copy_color (f, fore_pixel);
+ x->cursor_foreground_pixel = fore_pixel;
+
+ unload_color (f, x->cursor_pixel);
+ if (!pixel_allocated_p)
+ pixel = x_copy_color (f, pixel);
+ x->cursor_pixel = pixel;
+
+ if (FRAME_X_WINDOW (f) != 0)
+ {
+ BLOCK_INPUT;
+ XSetBackground (FRAME_X_DISPLAY (f), x->cursor_gc, x->cursor_pixel);
+ XSetForeground (FRAME_X_DISPLAY (f), x->cursor_gc, fore_pixel);
+ UNBLOCK_INPUT;
+
+ if (FRAME_VISIBLE_P (f))
+ {
+ x_update_cursor (f, 0);
+ x_update_cursor (f, 1);
+ }
+ }
+
+ update_face_from_frame_parameter (f, Qcursor_color, arg);
+ }
+
+ /* Set the border-color of frame F to pixel value PIX.
+ Note that this does not fully take effect if done before
+ F has an x-window. */
+
+ void
+ x_set_border_pixel (f, pix)
+ struct frame *f;
+ int pix;
+ {
+ unload_color (f, f->output_data.x->border_pixel);
+ f->output_data.x->border_pixel = pix;
+
+ if (FRAME_X_WINDOW (f) != 0 && f->border_width > 0)
+ {
+ BLOCK_INPUT;
+ XSetWindowBorder (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ (unsigned long)pix);
+ UNBLOCK_INPUT;
+
+ if (FRAME_VISIBLE_P (f))
+ redraw_frame (f);
+ }
+ }
+
+ /* Set the border-color of frame F to value described by ARG.
+ ARG can be a string naming a color.
+ The border-color is used for the border that is drawn by the X server.
+ Note that this does not fully take effect if done before
+ F has an x-window; it must be redone when the window is created.
+
+ Note: this is done in two routines because of the way X10 works.
+
+ Note: under X11, this is normally the province of the window manager,
+ and so emacs' border colors may be overridden. */
+
+ void
+ x_set_border_color (f, arg, oldval)
+ struct frame *f;
+ Lisp_Object arg, oldval;
+ {
+ int pix;
+
+ CHECK_STRING (arg);
+ pix = x_decode_color (f, arg, BLACK_PIX_DEFAULT (f));
+ x_set_border_pixel (f, pix);
+ update_face_from_frame_parameter (f, Qborder_color, arg);
+ }
+
+
+ void
+ x_set_cursor_type (f, arg, oldval)
+ FRAME_PTR f;
+ Lisp_Object arg, oldval;
+ {
+ set_frame_cursor_types (f, arg);
+
+ /* Make sure the cursor gets redrawn. */
+ cursor_type_changed = 1;
+ }
+
+ void
+ x_set_icon_type (f, arg, oldval)
+ struct frame *f;
+ Lisp_Object arg, oldval;
+ {
+ int result;
+
+ if (STRINGP (arg))
+ {
+ if (STRINGP (oldval) && EQ (Fstring_equal (oldval, arg), Qt))
+ return;
+ }
+ else if (!STRINGP (oldval) && EQ (oldval, Qnil) == EQ (arg, Qnil))
+ return;
+
+ BLOCK_INPUT;
+ if (NILP (arg))
+ result = x_text_icon (f,
+ (char *) SDATA ((!NILP (f->icon_name)
+ ? f->icon_name
+ : f->name)));
+ else
+ result = x_bitmap_icon (f, arg);
+
+ if (result)
+ {
+ UNBLOCK_INPUT;
+ error ("No icon window available");
+ }
+
+ XFlush (FRAME_X_DISPLAY (f));
+ UNBLOCK_INPUT;
+ }
+
+ void
+ x_set_icon_name (f, arg, oldval)
+ struct frame *f;
+ Lisp_Object arg, oldval;
+ {
+ int result;
+
+ if (STRINGP (arg))
+ {
+ if (STRINGP (oldval) && EQ (Fstring_equal (oldval, arg), Qt))
+ return;
+ }
+ else if (!STRINGP (oldval) && EQ (oldval, Qnil) == EQ (arg, Qnil))
+ return;
+
+ f->icon_name = arg;
+
+ if (f->output_data.x->icon_bitmap != 0)
+ return;
+
+ BLOCK_INPUT;
+
+ result = x_text_icon (f,
+ (char *) SDATA ((!NILP (f->icon_name)
+ ? f->icon_name
+ : !NILP (f->title)
+ ? f->title
+ : f->name)));
+
+ if (result)
+ {
+ UNBLOCK_INPUT;
+ error ("No icon window available");
+ }
+
+ XFlush (FRAME_X_DISPLAY (f));
+ UNBLOCK_INPUT;
+ }
+
+
+ void
+ x_set_menu_bar_lines (f, value, oldval)
+ struct frame *f;
+ Lisp_Object value, oldval;
+ {
+ int nlines;
+ #ifndef USE_X_TOOLKIT
+ int olines = FRAME_MENU_BAR_LINES (f);
+ #endif
+
+ /* Right now, menu bars don't work properly in minibuf-only frames;
+ most of the commands try to apply themselves to the minibuffer
+ frame itself, and get an error because you can't switch buffers
+ in or split the minibuffer window. */
+ if (FRAME_MINIBUF_ONLY_P (f))
+ return;
+
+ if (INTEGERP (value))
+ nlines = XINT (value);
+ else
+ nlines = 0;
+
+ /* Make sure we redisplay all windows in this frame. */
+ windows_or_buffers_changed++;
+
+ #if defined (USE_X_TOOLKIT) || defined (USE_GTK)
+ FRAME_MENU_BAR_LINES (f) = 0;
+ if (nlines)
+ {
+ FRAME_EXTERNAL_MENU_BAR (f) = 1;
+ if (FRAME_X_P (f) && f->output_data.x->menubar_widget == 0)
+ /* Make sure next redisplay shows the menu bar. */
+ XWINDOW (FRAME_SELECTED_WINDOW (f))->update_mode_line = Qt;
+ }
+ else
+ {
+ if (FRAME_EXTERNAL_MENU_BAR (f) == 1)
+ free_frame_menubar (f);
+ FRAME_EXTERNAL_MENU_BAR (f) = 0;
+ if (FRAME_X_P (f))
+ f->output_data.x->menubar_widget = 0;
+ }
+ #else /* not USE_X_TOOLKIT && not USE_GTK */
+ FRAME_MENU_BAR_LINES (f) = nlines;
+ change_window_heights (f->root_window, nlines - olines);
+ #endif /* not USE_X_TOOLKIT */
+ adjust_glyphs (f);
+ }
+
+
+ /* Set the number of lines used for the tool bar of frame F to VALUE.
+ VALUE not an integer, or < 0 means set the lines to zero. OLDVAL
+ is the old number of tool bar lines. This function changes the
+ height of all windows on frame F to match the new tool bar height.
+ The frame's height doesn't change. */
+
+ void
+ x_set_tool_bar_lines (f, value, oldval)
+ struct frame *f;
+ Lisp_Object value, oldval;
+ {
+ int delta, nlines, root_height;
+ Lisp_Object root_window;
+
+ /* Treat tool bars like menu bars. */
+ if (FRAME_MINIBUF_ONLY_P (f))
+ return;
+
+ /* Use VALUE only if an integer >= 0. */
+ if (INTEGERP (value) && XINT (value) >= 0)
+ nlines = XFASTINT (value);
+ else
+ nlines = 0;
+
+ #ifdef USE_GTK
+ FRAME_TOOL_BAR_LINES (f) = 0;
+ if (nlines)
+ {
+ FRAME_EXTERNAL_TOOL_BAR (f) = 1;
+ if (FRAME_X_P (f) && f->output_data.x->toolbar_widget == 0)
+ /* Make sure next redisplay shows the tool bar. */
+ XWINDOW (FRAME_SELECTED_WINDOW (f))->update_mode_line = Qt;
+ update_frame_tool_bar (f);
+ }
+ else
+ {
+ if (FRAME_EXTERNAL_TOOL_BAR (f))
+ free_frame_tool_bar (f);
+ FRAME_EXTERNAL_TOOL_BAR (f) = 0;
+ }
+
+ return;
+ #endif
+
+ /* Make sure we redisplay all windows in this frame. */
+ ++windows_or_buffers_changed;
+
+ delta = nlines - FRAME_TOOL_BAR_LINES (f);
+
+ /* Don't resize the tool-bar to more than we have room for. */
+ root_window = FRAME_ROOT_WINDOW (f);
+ root_height = WINDOW_TOTAL_LINES (XWINDOW (root_window));
+ if (root_height - delta < 1)
+ {
+ delta = root_height - 1;
+ nlines = FRAME_TOOL_BAR_LINES (f) + delta;
+ }
+
+ FRAME_TOOL_BAR_LINES (f) = nlines;
+ change_window_heights (root_window, delta);
+ adjust_glyphs (f);
+
+ /* We also have to make sure that the internal border at the top of
+ the frame, below the menu bar or tool bar, is redrawn when the
+ tool bar disappears. This is so because the internal border is
+ below the tool bar if one is displayed, but is below the menu bar
+ if there isn't a tool bar. The tool bar draws into the area
+ below the menu bar. */
+ if (FRAME_X_WINDOW (f) && FRAME_TOOL_BAR_LINES (f) == 0)
+ {
+ updating_frame = f;
+ clear_frame ();
+ clear_current_matrices (f);
+ updating_frame = NULL;
+ }
+
+ /* If the tool bar gets smaller, the internal border below it
+ has to be cleared. It was formerly part of the display
+ of the larger tool bar, and updating windows won't clear it. */
+ if (delta < 0)
+ {
+ int height = FRAME_INTERNAL_BORDER_WIDTH (f);
+ int width = FRAME_PIXEL_WIDTH (f);
+ int y = nlines * FRAME_LINE_HEIGHT (f);
+
+ BLOCK_INPUT;
+ x_clear_area (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ 0, y, width, height, False);
+ UNBLOCK_INPUT;
+
+ if (WINDOWP (f->tool_bar_window))
+ clear_glyph_matrix (XWINDOW (f->tool_bar_window)->current_matrix);
+ }
+ }
+
+
+ /* Set the foreground color for scroll bars on frame F to VALUE.
+ VALUE should be a string, a color name. If it isn't a string or
+ isn't a valid color name, do nothing. OLDVAL is the old value of
+ the frame parameter. */
+
+ void
+ x_set_scroll_bar_foreground (f, value, oldval)
+ struct frame *f;
+ Lisp_Object value, oldval;
+ {
+ unsigned long pixel;
+
+ if (STRINGP (value))
+ pixel = x_decode_color (f, value, BLACK_PIX_DEFAULT (f));
+ else
+ pixel = -1;
+
+ if (f->output_data.x->scroll_bar_foreground_pixel != -1)
+ unload_color (f, f->output_data.x->scroll_bar_foreground_pixel);
+
+ f->output_data.x->scroll_bar_foreground_pixel = pixel;
+ if (FRAME_X_WINDOW (f) && FRAME_VISIBLE_P (f))
+ {
+ /* Remove all scroll bars because they have wrong colors. */
+ if (condemn_scroll_bars_hook)
+ (*condemn_scroll_bars_hook) (f);
+ if (judge_scroll_bars_hook)
+ (*judge_scroll_bars_hook) (f);
+
+ update_face_from_frame_parameter (f, Qscroll_bar_foreground, value);
+ redraw_frame (f);
+ }
+ }
+
+
+ /* Set the background color for scroll bars on frame F to VALUE VALUE
+ should be a string, a color name. If it isn't a string or isn't a
+ valid color name, do nothing. OLDVAL is the old value of the frame
+ parameter. */
+
+ void
+ x_set_scroll_bar_background (f, value, oldval)
+ struct frame *f;
+ Lisp_Object value, oldval;
+ {
+ unsigned long pixel;
+
+ if (STRINGP (value))
+ pixel = x_decode_color (f, value, WHITE_PIX_DEFAULT (f));
+ else
+ pixel = -1;
+
+ if (f->output_data.x->scroll_bar_background_pixel != -1)
+ unload_color (f, f->output_data.x->scroll_bar_background_pixel);
+
+ #ifdef USE_TOOLKIT_SCROLL_BARS
+ /* Scrollbar shadow colors. */
+ if (f->output_data.x->scroll_bar_top_shadow_pixel != -1)
+ {
+ unload_color (f, f->output_data.x->scroll_bar_top_shadow_pixel);
+ f->output_data.x->scroll_bar_top_shadow_pixel = -1;
+ }
+ if (f->output_data.x->scroll_bar_bottom_shadow_pixel != -1)
+ {
+ unload_color (f, f->output_data.x->scroll_bar_bottom_shadow_pixel);
+ f->output_data.x->scroll_bar_bottom_shadow_pixel = -1;
+ }
+ #endif /* USE_TOOLKIT_SCROLL_BARS */
+
+ f->output_data.x->scroll_bar_background_pixel = pixel;
+ if (FRAME_X_WINDOW (f) && FRAME_VISIBLE_P (f))
+ {
+ /* Remove all scroll bars because they have wrong colors. */
+ if (condemn_scroll_bars_hook)
+ (*condemn_scroll_bars_hook) (f);
+ if (judge_scroll_bars_hook)
+ (*judge_scroll_bars_hook) (f);
+
+ update_face_from_frame_parameter (f, Qscroll_bar_background, value);
+ redraw_frame (f);
+ }
+ }
+
+
+ /* Encode Lisp string STRING as a text in a format appropriate for
+ XICCC (X Inter Client Communication Conventions).
+
+ If STRING contains only ASCII characters, do no conversion and
+ return the string data of STRING. Otherwise, encode the text by
+ CODING_SYSTEM, and return a newly allocated memory area which
+ should be freed by `xfree' by a caller.
+
+ SELECTIONP non-zero means the string is being encoded for an X
+ selection, so it is safe to run pre-write conversions (which
+ may run Lisp code).
+
+ Store the byte length of resulting text in *TEXT_BYTES.
+
+ If the text contains only ASCII and Latin-1, store 1 in *STRING_P,
+ which means that the `encoding' of the result can be `STRING'.
+ Otherwise store 0 in *STRINGP, which means that the `encoding' of
+ the result should be `COMPOUND_TEXT'. */
+
+ unsigned char *
+ x_encode_text (string, coding_system, selectionp, text_bytes, stringp)
+ Lisp_Object string, coding_system;
+ int *text_bytes, *stringp;
+ int selectionp;
+ {
+ unsigned char *str = SDATA (string);
+ int chars = SCHARS (string);
+ int bytes = SBYTES (string);
+ int charset_info;
+ int bufsize;
+ unsigned char *buf;
+ struct coding_system coding;
+ extern Lisp_Object Qcompound_text_with_extensions;
+
+ charset_info = find_charset_in_text (str, chars, bytes, NULL, Qnil);
+ if (charset_info == 0)
+ {
+ /* No multibyte character in OBJ. We need not encode it. */
+ *text_bytes = bytes;
+ *stringp = 1;
+ return str;
+ }
+
+ setup_coding_system (coding_system, &coding);
+ if (selectionp
+ && SYMBOLP (coding.pre_write_conversion)
+ && !NILP (Ffboundp (coding.pre_write_conversion)))
+ {
+ string = run_pre_post_conversion_on_str (string, &coding, 1);
+ str = SDATA (string);
+ chars = SCHARS (string);
+ bytes = SBYTES (string);
+ }
+ coding.src_multibyte = 1;
+ coding.dst_multibyte = 0;
+ coding.mode |= CODING_MODE_LAST_BLOCK;
+ if (coding.type == coding_type_iso2022)
+ coding.flags |= CODING_FLAG_ISO_SAFE;
+ /* We suppress producing escape sequences for composition. */
+ coding.composing = COMPOSITION_DISABLED;
+ bufsize = encoding_buffer_size (&coding, bytes);
+ buf = (unsigned char *) xmalloc (bufsize);
+ encode_coding (&coding, str, buf, bytes, bufsize);
+ *text_bytes = coding.produced;
+ *stringp = (charset_info == 1
+ || (!EQ (coding_system, Qcompound_text)
+ && !EQ (coding_system, Qcompound_text_with_extensions)));
+ return buf;
+ }
+
+
+ /* Change the name of frame F to NAME. If NAME is nil, set F's name to
+ x_id_name.
+
+ If EXPLICIT is non-zero, that indicates that lisp code is setting the
+ name; if NAME is a string, set F's name to NAME and set
+ F->explicit_name; if NAME is Qnil, then clear F->explicit_name.
+
+ If EXPLICIT is zero, that indicates that Emacs redisplay code is
+ suggesting a new name, which lisp code should override; if
+ F->explicit_name is set, ignore the new name; otherwise, set it. */
+
+ void
+ x_set_name (f, name, explicit)
+ struct frame *f;
+ Lisp_Object name;
+ int explicit;
+ {
+ /* Make sure that requests from lisp code override requests from
+ Emacs redisplay code. */
+ if (explicit)
+ {
+ /* If we're switching from explicit to implicit, we had better
+ update the mode lines and thereby update the title. */
+ if (f->explicit_name && NILP (name))
+ update_mode_lines = 1;
+
+ f->explicit_name = ! NILP (name);
+ }
+ else if (f->explicit_name)
+ return;
+
+ /* If NAME is nil, set the name to the x_id_name. */
+ if (NILP (name))
+ {
+ /* Check for no change needed in this very common case
+ before we do any consing. */
+ if (!strcmp (FRAME_X_DISPLAY_INFO (f)->x_id_name,
+ SDATA (f->name)))
+ return;
+ name = build_string (FRAME_X_DISPLAY_INFO (f)->x_id_name);
+ }
+ else
+ CHECK_STRING (name);
+
+ /* Don't change the name if it's already NAME. */
+ if (! NILP (Fstring_equal (name, f->name)))
+ return;
+
+ f->name = name;
+
+ /* For setting the frame title, the title parameter should override
+ the name parameter. */
+ if (! NILP (f->title))
+ name = f->title;
+
+ if (FRAME_X_WINDOW (f))
+ {
+ BLOCK_INPUT;
+ #ifdef HAVE_X11R4
+ {
+ XTextProperty text, icon;
+ int bytes, stringp;
+ Lisp_Object coding_system;
+
+ /* Note: Encoding strategy
+
+ We encode NAME by compound-text and use "COMPOUND-TEXT" in
+ text.encoding. But, there are non-internationalized window
+ managers which don't support that encoding. So, if NAME
+ contains only ASCII and 8859-1 characters, encode it by
+ iso-latin-1, and use "STRING" in text.encoding hoping that
+ such window manager at least analize this format correctly,
+ i.e. treat 8-bit bytes as 8859-1 characters.
+
+ We may also be able to use "UTF8_STRING" in text.encoding
+ in the feature which can encode all Unicode characters.
+ But, for the moment, there's no way to know that the
+ current window manager supports it or not. */
+ coding_system = Qcompound_text;
+ text.value = x_encode_text (name, coding_system, 0, &bytes, &stringp);
+ text.encoding = (stringp ? XA_STRING
+ : FRAME_X_DISPLAY_INFO (f)->Xatom_COMPOUND_TEXT);
+ text.format = 8;
+ text.nitems = bytes;
+
+ if (NILP (f->icon_name))
+ {
+ icon = text;
+ }
+ else
+ {
+ /* See the above comment "Note: Encoding strategy". */
+ icon.value = x_encode_text (f->icon_name, coding_system, 0,
+ &bytes, &stringp);
+ icon.encoding = (stringp ? XA_STRING
+ : FRAME_X_DISPLAY_INFO (f)->Xatom_COMPOUND_TEXT);
+ icon.format = 8;
+ icon.nitems = bytes;
+ }
+ #ifdef USE_GTK
+ gtk_window_set_title (GTK_WINDOW (FRAME_GTK_OUTER_WIDGET (f)),
+ SDATA (name));
+ #else /* not USE_GTK */
+ XSetWMName (FRAME_X_DISPLAY (f), FRAME_OUTER_WINDOW (f), &text);
+ #endif /* not USE_GTK */
+
+ XSetWMIconName (FRAME_X_DISPLAY (f), FRAME_OUTER_WINDOW (f), &icon);
+
+ if (!NILP (f->icon_name)
+ && icon.value != (unsigned char *) SDATA (f->icon_name))
+ xfree (icon.value);
+ if (text.value != (unsigned char *) SDATA (name))
+ xfree (text.value);
+ }
+ #else /* not HAVE_X11R4 */
+ XSetIconName (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ SDATA (name));
+ XStoreName (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ SDATA (name));
+ #endif /* not HAVE_X11R4 */
+ UNBLOCK_INPUT;
+ }
+ }
+
+ /* This function should be called when the user's lisp code has
+ specified a name for the frame; the name will override any set by the
+ redisplay code. */
+ void
+ x_explicitly_set_name (f, arg, oldval)
+ FRAME_PTR f;
+ Lisp_Object arg, oldval;
+ {
+ x_set_name (f, arg, 1);
+ }
+
+ /* This function should be called by Emacs redisplay code to set the
+ name; names set this way will never override names set by the user's
+ lisp code. */
+ void
+ x_implicitly_set_name (f, arg, oldval)
+ FRAME_PTR f;
+ Lisp_Object arg, oldval;
+ {
+ x_set_name (f, arg, 0);
+ }
+
+ /* Change the title of frame F to NAME.
+ If NAME is nil, use the frame name as the title.
+
+ If EXPLICIT is non-zero, that indicates that lisp code is setting the
+ name; if NAME is a string, set F's name to NAME and set
+ F->explicit_name; if NAME is Qnil, then clear F->explicit_name.
+
+ If EXPLICIT is zero, that indicates that Emacs redisplay code is
+ suggesting a new name, which lisp code should override; if
+ F->explicit_name is set, ignore the new name; otherwise, set it. */
+
+ void
+ x_set_title (f, name, old_name)
+ struct frame *f;
+ Lisp_Object name, old_name;
+ {
+ /* Don't change the title if it's already NAME. */
+ if (EQ (name, f->title))
+ return;
+
+ update_mode_lines = 1;
+
+ f->title = name;
+
+ if (NILP (name))
+ name = f->name;
+ else
+ CHECK_STRING (name);
+
+ if (FRAME_X_WINDOW (f))
+ {
+ BLOCK_INPUT;
+ #ifdef HAVE_X11R4
+ {
+ XTextProperty text, icon;
+ int bytes, stringp;
+ Lisp_Object coding_system;
+
+ coding_system = Qcompound_text;
+ /* See the comment "Note: Encoding strategy" in x_set_name. */
+ text.value = x_encode_text (name, coding_system, 0, &bytes, &stringp);
+ text.encoding = (stringp ? XA_STRING
+ : FRAME_X_DISPLAY_INFO (f)->Xatom_COMPOUND_TEXT);
+ text.format = 8;
+ text.nitems = bytes;
+
+ if (NILP (f->icon_name))
+ {
+ icon = text;
+ }
+ else
+ {
+ /* See the comment "Note: Encoding strategy" in x_set_name. */
+ icon.value = x_encode_text (f->icon_name, coding_system, 0,
+ &bytes, &stringp);
+ icon.encoding = (stringp ? XA_STRING
+ : FRAME_X_DISPLAY_INFO (f)->Xatom_COMPOUND_TEXT);
+ icon.format = 8;
+ icon.nitems = bytes;
+ }
+
+ #ifdef USE_GTK
+ gtk_window_set_title (GTK_WINDOW (FRAME_GTK_OUTER_WIDGET (f)),
+ SDATA (name));
+ #else /* not USE_GTK */
+ XSetWMName (FRAME_X_DISPLAY (f), FRAME_OUTER_WINDOW (f), &text);
+ #endif /* not USE_GTK */
+
+ XSetWMIconName (FRAME_X_DISPLAY (f), FRAME_OUTER_WINDOW (f),
+ &icon);
+
+ if (!NILP (f->icon_name)
+ && icon.value != (unsigned char *) SDATA (f->icon_name))
+ xfree (icon.value);
+ if (text.value != (unsigned char *) SDATA (name))
+ xfree (text.value);
+ }
+ #else /* not HAVE_X11R4 */
+ XSetIconName (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ SDATA (name));
+ XStoreName (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ SDATA (name));
+ #endif /* not HAVE_X11R4 */
+ UNBLOCK_INPUT;
+ }
+ }
+
+ void
+ x_set_scroll_bar_default_width (f)
+ struct frame *f;
+ {
+ int wid = FRAME_COLUMN_WIDTH (f);
+
+ #ifdef USE_TOOLKIT_SCROLL_BARS
+ /* A minimum width of 14 doesn't look good for toolkit scroll bars. */
+ int width = 16 + 2 * VERTICAL_SCROLL_BAR_WIDTH_TRIM;
+ FRAME_CONFIG_SCROLL_BAR_COLS (f) = (width + wid - 1) / wid;
+ FRAME_CONFIG_SCROLL_BAR_WIDTH (f) = width;
+ #else
+ /* Make the actual width at least 14 pixels and a multiple of a
+ character width. */
+ FRAME_CONFIG_SCROLL_BAR_COLS (f) = (14 + wid - 1) / wid;
+
+ /* Use all of that space (aside from required margins) for the
+ scroll bar. */
+ FRAME_CONFIG_SCROLL_BAR_WIDTH (f) = 0;
+ #endif
+ }
+
+
+ /* Record in frame F the specified or default value according to ALIST
+ of the parameter named PROP (a Lisp symbol). If no value is
+ specified for PROP, look for an X default for XPROP on the frame
+ named NAME. If that is not found either, use the value DEFLT. */
+
+ static Lisp_Object
+ x_default_scroll_bar_color_parameter (f, alist, prop, xprop, xclass,
+ foreground_p)
+ struct frame *f;
+ Lisp_Object alist;
+ Lisp_Object prop;
+ char *xprop;
+ char *xclass;
+ int foreground_p;
+ {
+ struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+ Lisp_Object tem;
+
+ tem = x_get_arg (dpyinfo, alist, prop, xprop, xclass, RES_TYPE_STRING);
+ if (EQ (tem, Qunbound))
+ {
+ #ifdef USE_TOOLKIT_SCROLL_BARS
+
+ /* See if an X resource for the scroll bar color has been
+ specified. */
+ tem = display_x_get_resource (dpyinfo,
+ build_string (foreground_p
+ ? "foreground"
+ : "background"),
+ empty_string,
+ build_string ("verticalScrollBar"),
+ empty_string);
+ if (!STRINGP (tem))
+ {
+ /* If nothing has been specified, scroll bars will use a
+ toolkit-dependent default. Because these defaults are
+ difficult to get at without actually creating a scroll
+ bar, use nil to indicate that no color has been
+ specified. */
+ tem = Qnil;
+ }
+
+ #else /* not USE_TOOLKIT_SCROLL_BARS */
+
+ tem = Qnil;
+
+ #endif /* not USE_TOOLKIT_SCROLL_BARS */
+ }
+
+ x_set_frame_parameters (f, Fcons (Fcons (prop, tem), Qnil));
+ return tem;
+ }
+
+
+
+ #if !defined (HAVE_X11R4) && !defined (HAVE_XSETWMPROTOCOLS)
+
+ Status
+ XSetWMProtocols (dpy, w, protocols, count)
+ Display *dpy;
+ Window w;
+ Atom *protocols;
+ int count;
+ {
+ Atom prop;
+ prop = XInternAtom (dpy, "WM_PROTOCOLS", False);
+ if (prop == None) return False;
+ XChangeProperty (dpy, w, prop, XA_ATOM, 32, PropModeReplace,
+ (unsigned char *) protocols, count);
+ return True;
+ }
+ #endif /* not HAVE_X11R4 && not HAVE_XSETWMPROTOCOLS */
+
+ #ifdef USE_X_TOOLKIT
+
+ /* If the WM_PROTOCOLS property does not already contain WM_TAKE_FOCUS,
+ WM_DELETE_WINDOW, and WM_SAVE_YOURSELF, then add them. (They may
+ already be present because of the toolkit (Motif adds some of them,
+ for example, but Xt doesn't). */
+
+ static void
+ hack_wm_protocols (f, widget)
+ FRAME_PTR f;
+ Widget widget;
+ {
+ Display *dpy = XtDisplay (widget);
+ Window w = XtWindow (widget);
+ int need_delete = 1;
+ int need_focus = 1;
+ int need_save = 1;
+
+ BLOCK_INPUT;
+ {
+ Atom type, *atoms = 0;
+ int format = 0;
+ unsigned long nitems = 0;
+ unsigned long bytes_after;
+
+ if ((XGetWindowProperty (dpy, w,
+ FRAME_X_DISPLAY_INFO (f)->Xatom_wm_protocols,
+ (long)0, (long)100, False, XA_ATOM,
+ &type, &format, &nitems, &bytes_after,
+ (unsigned char **) &atoms)
+ == Success)
+ && format == 32 && type == XA_ATOM)
+ while (nitems > 0)
+ {
+ nitems--;
+ if (atoms[nitems] == FRAME_X_DISPLAY_INFO (f)->Xatom_wm_delete_window)
+ need_delete = 0;
+ else if (atoms[nitems] == FRAME_X_DISPLAY_INFO
(f)->Xatom_wm_take_focus)
+ need_focus = 0;
+ else if (atoms[nitems] == FRAME_X_DISPLAY_INFO
(f)->Xatom_wm_save_yourself)
+ need_save = 0;
+ }
+ if (atoms) XFree ((char *) atoms);
+ }
+ {
+ Atom props [10];
+ int count = 0;
+ if (need_delete)
+ props[count++] = FRAME_X_DISPLAY_INFO (f)->Xatom_wm_delete_window;
+ if (need_focus)
+ props[count++] = FRAME_X_DISPLAY_INFO (f)->Xatom_wm_take_focus;
+ if (need_save)
+ props[count++] = FRAME_X_DISPLAY_INFO (f)->Xatom_wm_save_yourself;
+ if (count)
+ XChangeProperty (dpy, w, FRAME_X_DISPLAY_INFO (f)->Xatom_wm_protocols,
+ XA_ATOM, 32, PropModeAppend,
+ (unsigned char *) props, count);
+ }
+ UNBLOCK_INPUT;
+ }
+ #endif
+
+
+
+ /* Support routines for XIC (X Input Context). */
+
+ #ifdef HAVE_X_I18N
+
+ static XFontSet xic_create_xfontset P_ ((struct frame *, char *));
+ static XIMStyle best_xim_style P_ ((XIMStyles *, XIMStyles *));
+
+
+ /* Supported XIM styles, ordered by preference. */
+
+ static XIMStyle supported_xim_styles[] =
+ {
+ XIMPreeditPosition | XIMStatusArea,
+ XIMPreeditPosition | XIMStatusNothing,
+ XIMPreeditPosition | XIMStatusNone,
+ XIMPreeditNothing | XIMStatusArea,
+ XIMPreeditNothing | XIMStatusNothing,
+ XIMPreeditNothing | XIMStatusNone,
+ XIMPreeditNone | XIMStatusArea,
+ XIMPreeditNone | XIMStatusNothing,
+ XIMPreeditNone | XIMStatusNone,
+ 0,
+ };
+
+
+ /* Create an X fontset on frame F with base font name
+ BASE_FONTNAME.. */
+
+ static XFontSet
+ xic_create_xfontset (f, base_fontname)
+ struct frame *f;
+ char *base_fontname;
+ {
+ XFontSet xfs;
+ char **missing_list;
+ int missing_count;
+ char *def_string;
+
+ xfs = XCreateFontSet (FRAME_X_DISPLAY (f),
+ base_fontname, &missing_list,
+ &missing_count, &def_string);
+ if (missing_list)
+ XFreeStringList (missing_list);
+
+ /* No need to free def_string. */
+ return xfs;
+ }
+
+
+ /* Value is the best input style, given user preferences USER (already
+ checked to be supported by Emacs), and styles supported by the
+ input method XIM. */
+
+ static XIMStyle
+ best_xim_style (user, xim)
+ XIMStyles *user;
+ XIMStyles *xim;
+ {
+ int i, j;
+
+ for (i = 0; i < user->count_styles; ++i)
+ for (j = 0; j < xim->count_styles; ++j)
+ if (user->supported_styles[i] == xim->supported_styles[j])
+ return user->supported_styles[i];
+
+ /* Return the default style. */
+ return XIMPreeditNothing | XIMStatusNothing;
+ }
+
+ /* Create XIC for frame F. */
+
+ static XIMStyle xic_style;
+
+ void
+ create_frame_xic (f)
+ struct frame *f;
+ {
+ XIM xim;
+ XIC xic = NULL;
+ XFontSet xfs = NULL;
+
+ if (FRAME_XIC (f))
+ return;
+
+ xim = FRAME_X_XIM (f);
+ if (xim)
+ {
+ XRectangle s_area;
+ XPoint spot;
+ XVaNestedList preedit_attr;
+ XVaNestedList status_attr;
+ char *base_fontname;
+ int fontset;
+
+ s_area.x = 0; s_area.y = 0; s_area.width = 1; s_area.height = 1;
+ spot.x = 0; spot.y = 1;
+ /* Create X fontset. */
+ fontset = FRAME_FONTSET (f);
+ if (fontset < 0)
+ base_fontname = "-*-*-*-r-normal--14-*-*-*-*-*-*-*";
+ else
+ {
+ /* Determine the base fontname from the ASCII font name of
+ FONTSET. */
+ char *ascii_font = (char *) SDATA (fontset_ascii (fontset));
+ char *p = ascii_font;
+ int i;
+
+ for (i = 0; *p; p++)
+ if (*p == '-') i++;
+ if (i != 14)
+ /* As the font name doesn't conform to XLFD, we can't
+ modify it to get a suitable base fontname for the
+ frame. */
+ base_fontname = "-*-*-*-r-normal--14-*-*-*-*-*-*-*";
+ else
+ {
+ int len = strlen (ascii_font) + 1;
+ char *p1 = NULL;
+
+ for (i = 0, p = ascii_font; i < 8; p++)
+ {
+ if (*p == '-')
+ {
+ i++;
+ if (i == 3)
+ p1 = p + 1;
+ }
+ }
+ base_fontname = (char *) alloca (len);
+ bzero (base_fontname, len);
+ strcpy (base_fontname, "-*-*-");
+ bcopy (p1, base_fontname + 5, p - p1);
+ strcat (base_fontname, "*-*-*-*-*-*-*");
+ }
+ }
+ xfs = xic_create_xfontset (f, base_fontname);
+
+ /* Determine XIC style. */
+ if (xic_style == 0)
+ {
+ XIMStyles supported_list;
+ supported_list.count_styles = (sizeof supported_xim_styles
+ / sizeof supported_xim_styles[0]);
+ supported_list.supported_styles = supported_xim_styles;
+ xic_style = best_xim_style (&supported_list,
+ FRAME_X_XIM_STYLES (f));
+ }
+
+ preedit_attr = XVaCreateNestedList (0,
+ XNFontSet, xfs,
+ XNForeground,
+ FRAME_FOREGROUND_PIXEL (f),
+ XNBackground,
+ FRAME_BACKGROUND_PIXEL (f),
+ (xic_style & XIMPreeditPosition
+ ? XNSpotLocation
+ : NULL),
+ &spot,
+ NULL);
+ status_attr = XVaCreateNestedList (0,
+ XNArea,
+ &s_area,
+ XNFontSet,
+ xfs,
+ XNForeground,
+ FRAME_FOREGROUND_PIXEL (f),
+ XNBackground,
+ FRAME_BACKGROUND_PIXEL (f),
+ NULL);
+
+ xic = XCreateIC (xim,
+ XNInputStyle, xic_style,
+ XNClientWindow, FRAME_X_WINDOW(f),
+ XNFocusWindow, FRAME_X_WINDOW(f),
+ XNStatusAttributes, status_attr,
+ XNPreeditAttributes, preedit_attr,
+ NULL);
+ XFree (preedit_attr);
+ XFree (status_attr);
+ }
+
+ FRAME_XIC (f) = xic;
+ FRAME_XIC_STYLE (f) = xic_style;
+ FRAME_XIC_FONTSET (f) = xfs;
+ }
+
+
+ /* Destroy XIC and free XIC fontset of frame F, if any. */
+
+ void
+ free_frame_xic (f)
+ struct frame *f;
+ {
+ if (FRAME_XIC (f) == NULL)
+ return;
+
+ XDestroyIC (FRAME_XIC (f));
+ if (FRAME_XIC_FONTSET (f))
+ XFreeFontSet (FRAME_X_DISPLAY (f), FRAME_XIC_FONTSET (f));
+
+ FRAME_XIC (f) = NULL;
+ FRAME_XIC_FONTSET (f) = NULL;
+ }
+
+
+ /* Place preedit area for XIC of window W's frame to specified
+ pixel position X/Y. X and Y are relative to window W. */
+
+ void
+ xic_set_preeditarea (w, x, y)
+ struct window *w;
+ int x, y;
+ {
+ struct frame *f = XFRAME (w->frame);
+ XVaNestedList attr;
+ XPoint spot;
+
+ spot.x = WINDOW_TO_FRAME_PIXEL_X (w, x);
+ spot.y = WINDOW_TO_FRAME_PIXEL_Y (w, y) + FONT_BASE (FRAME_FONT (f));
+ attr = XVaCreateNestedList (0, XNSpotLocation, &spot, NULL);
+ XSetICValues (FRAME_XIC (f), XNPreeditAttributes, attr, NULL);
+ XFree (attr);
+ }
+
+
+ /* Place status area for XIC in bottom right corner of frame F.. */
+
+ void
+ xic_set_statusarea (f)
+ struct frame *f;
+ {
+ XIC xic = FRAME_XIC (f);
+ XVaNestedList attr;
+ XRectangle area;
+ XRectangle *needed;
+
+ /* Negotiate geometry of status area. If input method has existing
+ status area, use its current size. */
+ area.x = area.y = area.width = area.height = 0;
+ attr = XVaCreateNestedList (0, XNAreaNeeded, &area, NULL);
+ XSetICValues (xic, XNStatusAttributes, attr, NULL);
+ XFree (attr);
+
+ attr = XVaCreateNestedList (0, XNAreaNeeded, &needed, NULL);
+ XGetICValues (xic, XNStatusAttributes, attr, NULL);
+ XFree (attr);
+
+ if (needed->width == 0) /* Use XNArea instead of XNAreaNeeded */
+ {
+ attr = XVaCreateNestedList (0, XNArea, &needed, NULL);
+ XGetICValues (xic, XNStatusAttributes, attr, NULL);
+ XFree (attr);
+ }
+
+ area.width = needed->width;
+ area.height = needed->height;
+ area.x = FRAME_PIXEL_WIDTH (f) - area.width - FRAME_INTERNAL_BORDER_WIDTH
(f);
+ area.y = (FRAME_PIXEL_HEIGHT (f) - area.height
+ - FRAME_MENUBAR_HEIGHT (f)
+ - FRAME_TOOLBAR_HEIGHT (f)
+ - FRAME_INTERNAL_BORDER_WIDTH (f));
+ XFree (needed);
+
+ attr = XVaCreateNestedList (0, XNArea, &area, NULL);
+ XSetICValues(xic, XNStatusAttributes, attr, NULL);
+ XFree (attr);
+ }
+
+
+ /* Set X fontset for XIC of frame F, using base font name
+ BASE_FONTNAME. Called when a new Emacs fontset is chosen. */
+
+ void
+ xic_set_xfontset (f, base_fontname)
+ struct frame *f;
+ char *base_fontname;
+ {
+ XVaNestedList attr;
+ XFontSet xfs;
+
+ xfs = xic_create_xfontset (f, base_fontname);
+
+ attr = XVaCreateNestedList (0, XNFontSet, xfs, NULL);
+ if (FRAME_XIC_STYLE (f) & XIMPreeditPosition)
+ XSetICValues (FRAME_XIC (f), XNPreeditAttributes, attr, NULL);
+ if (FRAME_XIC_STYLE (f) & XIMStatusArea)
+ XSetICValues (FRAME_XIC (f), XNStatusAttributes, attr, NULL);
+ XFree (attr);
+
+ if (FRAME_XIC_FONTSET (f))
+ XFreeFontSet (FRAME_X_DISPLAY (f), FRAME_XIC_FONTSET (f));
+ FRAME_XIC_FONTSET (f) = xfs;
+ }
+
+ #endif /* HAVE_X_I18N */
+
+
+
+ #ifdef USE_X_TOOLKIT
+
+ /* Create and set up the X widget for frame F. */
+
+ static void
+ x_window (f, window_prompting, minibuffer_only)
+ struct frame *f;
+ long window_prompting;
+ int minibuffer_only;
+ {
+ XClassHint class_hints;
+ XSetWindowAttributes attributes;
+ unsigned long attribute_mask;
+ Widget shell_widget;
+ Widget pane_widget;
+ Widget frame_widget;
+ Arg al [25];
+ int ac;
+
+ BLOCK_INPUT;
+
+ /* Use the resource name as the top-level widget name
+ for looking up resources. Make a non-Lisp copy
+ for the window manager, so GC relocation won't bother it.
+
+ Elsewhere we specify the window name for the window manager. */
+
+ {
+ char *str = (char *) SDATA (Vx_resource_name);
+ f->namebuf = (char *) xmalloc (strlen (str) + 1);
+ strcpy (f->namebuf, str);
+ }
+
+ ac = 0;
+ XtSetArg (al[ac], XtNallowShellResize, 1); ac++;
+ XtSetArg (al[ac], XtNinput, 1); ac++;
+ XtSetArg (al[ac], XtNmappedWhenManaged, 0); ac++;
+ XtSetArg (al[ac], XtNborderWidth, f->border_width); ac++;
+ XtSetArg (al[ac], XtNvisual, FRAME_X_VISUAL (f)); ac++;
+ XtSetArg (al[ac], XtNdepth, FRAME_X_DISPLAY_INFO (f)->n_planes); ac++;
+ XtSetArg (al[ac], XtNcolormap, FRAME_X_COLORMAP (f)); ac++;
+ shell_widget = XtAppCreateShell (f->namebuf, EMACS_CLASS,
+ applicationShellWidgetClass,
+ FRAME_X_DISPLAY (f), al, ac);
+
+ f->output_data.x->widget = shell_widget;
+ /* maybe_set_screen_title_format (shell_widget); */
+
+ pane_widget = lw_create_widget ("main", "pane", widget_id_tick++,
+ (widget_value *) NULL,
+ shell_widget, False,
+ (lw_callback) NULL,
+ (lw_callback) NULL,
+ (lw_callback) NULL,
+ (lw_callback) NULL);
+
+ ac = 0;
+ XtSetArg (al[ac], XtNvisual, FRAME_X_VISUAL (f)); ac++;
+ XtSetArg (al[ac], XtNdepth, FRAME_X_DISPLAY_INFO (f)->n_planes); ac++;
+ XtSetArg (al[ac], XtNcolormap, FRAME_X_COLORMAP (f)); ac++;
+ XtSetValues (pane_widget, al, ac);
+ f->output_data.x->column_widget = pane_widget;
+
+ /* mappedWhenManaged to false tells to the paned window to not map/unmap
+ the emacs screen when changing menubar. This reduces flickering. */
+
+ ac = 0;
+ XtSetArg (al[ac], XtNmappedWhenManaged, 0); ac++;
+ XtSetArg (al[ac], XtNshowGrip, 0); ac++;
+ XtSetArg (al[ac], XtNallowResize, 1); ac++;
+ XtSetArg (al[ac], XtNresizeToPreferred, 1); ac++;
+ XtSetArg (al[ac], XtNemacsFrame, f); ac++;
+ XtSetArg (al[ac], XtNvisual, FRAME_X_VISUAL (f)); ac++;
+ XtSetArg (al[ac], XtNdepth, FRAME_X_DISPLAY_INFO (f)->n_planes); ac++;
+ XtSetArg (al[ac], XtNcolormap, FRAME_X_COLORMAP (f)); ac++;
+ frame_widget = XtCreateWidget (f->namebuf, emacsFrameClass, pane_widget,
+ al, ac);
+
+ f->output_data.x->edit_widget = frame_widget;
+
+ XtManageChild (frame_widget);
+
+ /* Do some needed geometry management. */
+ {
+ int len;
+ char *tem, shell_position[32];
+ Arg al[2];
+ int ac = 0;
+ int extra_borders = 0;
+ int menubar_size
+ = (f->output_data.x->menubar_widget
+ ? (f->output_data.x->menubar_widget->core.height
+ + f->output_data.x->menubar_widget->core.border_width)
+ : 0);
+
+ #if 0 /* Experimentally, we now get the right results
+ for -geometry -0-0 without this. 24 Aug 96, rms. */
+ if (FRAME_EXTERNAL_MENU_BAR (f))
+ {
+ Dimension ibw = 0;
+ XtVaGetValues (pane_widget, XtNinternalBorderWidth, &ibw, NULL);
+ menubar_size += ibw;
+ }
+ #endif
+
+ f->output_data.x->menubar_height = menubar_size;
+
+ #ifndef USE_LUCID
+ /* Motif seems to need this amount added to the sizes
+ specified for the shell widget. The Athena/Lucid widgets don't.
+ Both conclusions reached experimentally. -- rms. */
+ XtVaGetValues (f->output_data.x->edit_widget, XtNinternalBorderWidth,
+ &extra_borders, NULL);
+ extra_borders *= 2;
+ #endif
+
+ /* Convert our geometry parameters into a geometry string
+ and specify it.
+ Note that we do not specify here whether the position
+ is a user-specified or program-specified one.
+ We pass that information later, in x_wm_set_size_hints. */
+ {
+ int left = f->left_pos;
+ int xneg = window_prompting & XNegative;
+ int top = f->top_pos;
+ int yneg = window_prompting & YNegative;
+ if (xneg)
+ left = -left;
+ if (yneg)
+ top = -top;
+
+ if (window_prompting & USPosition)
+ sprintf (shell_position, "=%dx%d%c%d%c%d",
+ FRAME_PIXEL_WIDTH (f) + extra_borders,
+ FRAME_PIXEL_HEIGHT (f) + menubar_size + extra_borders,
+ (xneg ? '-' : '+'), left,
+ (yneg ? '-' : '+'), top);
+ else
+ sprintf (shell_position, "=%dx%d",
+ FRAME_PIXEL_WIDTH (f) + extra_borders,
+ FRAME_PIXEL_HEIGHT (f) + menubar_size + extra_borders);
+ }
+
+ len = strlen (shell_position) + 1;
+ /* We don't free this because we don't know whether
+ it is safe to free it while the frame exists.
+ It isn't worth the trouble of arranging to free it
+ when the frame is deleted. */
+ tem = (char *) xmalloc (len);
+ strncpy (tem, shell_position, len);
+ XtSetArg (al[ac], XtNgeometry, tem); ac++;
+ XtSetValues (shell_widget, al, ac);
+ }
+
+ XtManageChild (pane_widget);
+ XtRealizeWidget (shell_widget);
+
+ FRAME_X_WINDOW (f) = XtWindow (frame_widget);
+
+ validate_x_resource_name ();
+
+ class_hints.res_name = (char *) SDATA (Vx_resource_name);
+ class_hints.res_class = (char *) SDATA (Vx_resource_class);
+ XSetClassHint (FRAME_X_DISPLAY (f), XtWindow (shell_widget), &class_hints);
+
+ #ifdef HAVE_X_I18N
+ FRAME_XIC (f) = NULL;
+ if (use_xim)
+ create_frame_xic (f);
+ #endif
+
+ f->output_data.x->wm_hints.input = True;
+ f->output_data.x->wm_hints.flags |= InputHint;
+ XSetWMHints (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ &f->output_data.x->wm_hints);
+
+ hack_wm_protocols (f, shell_widget);
+
+ #ifdef HACK_EDITRES
+ XtAddEventHandler (shell_widget, 0, True, _XEditResCheckMessages, 0);
+ #endif
+
+ /* Do a stupid property change to force the server to generate a
+ PropertyNotify event so that the event_stream server timestamp will
+ be initialized to something relevant to the time we created the window.
+ */
+ XChangeProperty (XtDisplay (frame_widget), XtWindow (frame_widget),
+ FRAME_X_DISPLAY_INFO (f)->Xatom_wm_protocols,
+ XA_ATOM, 32, PropModeAppend,
+ (unsigned char*) NULL, 0);
+
+ /* Make all the standard events reach the Emacs frame. */
+ attributes.event_mask = STANDARD_EVENT_SET;
+
+ #ifdef HAVE_X_I18N
+ if (FRAME_XIC (f))
+ {
+ /* XIM server might require some X events. */
+ unsigned long fevent = NoEventMask;
+ XGetICValues(FRAME_XIC (f), XNFilterEvents, &fevent, NULL);
+ attributes.event_mask |= fevent;
+ }
+ #endif /* HAVE_X_I18N */
+
+ attribute_mask = CWEventMask;
+ XChangeWindowAttributes (XtDisplay (shell_widget), XtWindow (shell_widget),
+ attribute_mask, &attributes);
+
+ XtMapWidget (frame_widget);
+
+ /* x_set_name normally ignores requests to set the name if the
+ requested name is the same as the current name. This is the one
+ place where that assumption isn't correct; f->name is set, but
+ the X server hasn't been told. */
+ {
+ Lisp_Object name;
+ int explicit = f->explicit_name;
+
+ f->explicit_name = 0;
+ name = f->name;
+ f->name = Qnil;
+ x_set_name (f, name, explicit);
+ }
+
+ XDefineCursor (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ f->output_data.x->text_cursor);
+
+ UNBLOCK_INPUT;
+
+ /* This is a no-op, except under Motif. Make sure main areas are
+ set to something reasonable, in case we get an error later. */
+ lw_set_main_areas (pane_widget, 0, frame_widget);
+ }
+
+ #else /* not USE_X_TOOLKIT */
+ #ifdef USE_GTK
+ void
+ x_window (f)
+ FRAME_PTR f;
+ {
+ if (! xg_create_frame_widgets (f))
+ error ("Unable to create window");
+
+ #ifdef HAVE_X_I18N
+ FRAME_XIC (f) = NULL;
+ if (use_xim)
+ {
+ BLOCK_INPUT;
+ create_frame_xic (f);
+ if (FRAME_XIC (f))
+ {
+ /* XIM server might require some X events. */
+ unsigned long fevent = NoEventMask;
+ XGetICValues(FRAME_XIC (f), XNFilterEvents, &fevent, NULL);
+
+ if (fevent != NoEventMask)
+ {
+ XSetWindowAttributes attributes;
+ XWindowAttributes wattr;
+ unsigned long attribute_mask;
+
+ XGetWindowAttributes (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ &wattr);
+ attributes.event_mask = wattr.your_event_mask | fevent;
+ attribute_mask = CWEventMask;
+ XChangeWindowAttributes (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ attribute_mask, &attributes);
+ }
+ }
+ UNBLOCK_INPUT;
+ }
+ #endif
+ }
+
+ #else /*! USE_GTK */
+ /* Create and set up the X window for frame F. */
+
+ void
+ x_window (f)
+ struct frame *f;
+
+ {
+ XClassHint class_hints;
+ XSetWindowAttributes attributes;
+ unsigned long attribute_mask;
+
+ attributes.background_pixel = f->output_data.x->background_pixel;
+ attributes.border_pixel = f->output_data.x->border_pixel;
+ attributes.bit_gravity = StaticGravity;
+ attributes.backing_store = NotUseful;
+ attributes.save_under = True;
+ attributes.event_mask = STANDARD_EVENT_SET;
+ attributes.colormap = FRAME_X_COLORMAP (f);
+ attribute_mask = (CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
+ | CWColormap);
+
+ BLOCK_INPUT;
+ FRAME_X_WINDOW (f)
+ = XCreateWindow (FRAME_X_DISPLAY (f),
+ f->output_data.x->parent_desc,
+ f->left_pos,
+ f->top_pos,
+ FRAME_PIXEL_WIDTH (f), FRAME_PIXEL_HEIGHT (f),
+ f->border_width,
+ CopyFromParent, /* depth */
+ InputOutput, /* class */
+ FRAME_X_VISUAL (f),
+ attribute_mask, &attributes);
+
+ #ifdef HAVE_X_I18N
+ if (use_xim)
+ {
+ create_frame_xic (f);
+ if (FRAME_XIC (f))
+ {
+ /* XIM server might require some X events. */
+ unsigned long fevent = NoEventMask;
+ XGetICValues(FRAME_XIC (f), XNFilterEvents, &fevent, NULL);
+ attributes.event_mask |= fevent;
+ attribute_mask = CWEventMask;
+ XChangeWindowAttributes (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ attribute_mask, &attributes);
+ }
+ }
+ #endif /* HAVE_X_I18N */
+
+ validate_x_resource_name ();
+
+ class_hints.res_name = (char *) SDATA (Vx_resource_name);
+ class_hints.res_class = (char *) SDATA (Vx_resource_class);
+ XSetClassHint (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), &class_hints);
+
+ /* The menubar is part of the ordinary display;
+ it does not count in addition to the height of the window. */
+ f->output_data.x->menubar_height = 0;
+
+ /* This indicates that we use the "Passive Input" input model.
+ Unless we do this, we don't get the Focus{In,Out} events that we
+ need to draw the cursor correctly. Accursed bureaucrats.
+ XWhipsAndChains (FRAME_X_DISPLAY (f), IronMaiden, &TheRack); */
+
+ f->output_data.x->wm_hints.input = True;
+ f->output_data.x->wm_hints.flags |= InputHint;
+ XSetWMHints (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ &f->output_data.x->wm_hints);
+ f->output_data.x->wm_hints.icon_pixmap = None;
+
+ /* Request "save yourself" and "delete window" commands from wm. */
+ {
+ Atom protocols[2];
+ protocols[0] = FRAME_X_DISPLAY_INFO (f)->Xatom_wm_delete_window;
+ protocols[1] = FRAME_X_DISPLAY_INFO (f)->Xatom_wm_save_yourself;
+ XSetWMProtocols (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), protocols, 2);
+ }
+
+ /* x_set_name normally ignores requests to set the name if the
+ requested name is the same as the current name. This is the one
+ place where that assumption isn't correct; f->name is set, but
+ the X server hasn't been told. */
+ {
+ Lisp_Object name;
+ int explicit = f->explicit_name;
+
+ f->explicit_name = 0;
+ name = f->name;
+ f->name = Qnil;
+ x_set_name (f, name, explicit);
+ }
+
+ XDefineCursor (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ f->output_data.x->text_cursor);
+
+ UNBLOCK_INPUT;
+
+ if (FRAME_X_WINDOW (f) == 0)
+ error ("Unable to create window");
+ }
+
+ #endif /* not USE_GTK */
+ #endif /* not USE_X_TOOLKIT */
+
+ /* Handle the icon stuff for this window. Perhaps later we might
+ want an x_set_icon_position which can be called interactively as
+ well. */
+
+ static void
+ x_icon (f, parms)
+ struct frame *f;
+ Lisp_Object parms;
+ {
+ Lisp_Object icon_x, icon_y;
+ struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+
+ /* Set the position of the icon. Note that twm groups all
+ icons in an icon window. */
+ icon_x = x_frame_get_and_record_arg (f, parms, Qicon_left, 0, 0,
RES_TYPE_NUMBER);
+ icon_y = x_frame_get_and_record_arg (f, parms, Qicon_top, 0, 0,
RES_TYPE_NUMBER);
+ if (!EQ (icon_x, Qunbound) && !EQ (icon_y, Qunbound))
+ {
+ CHECK_NUMBER (icon_x);
+ CHECK_NUMBER (icon_y);
+ }
+ else if (!EQ (icon_x, Qunbound) || !EQ (icon_y, Qunbound))
+ error ("Both left and top icon corners of icon must be specified");
+
+ BLOCK_INPUT;
+
+ if (! EQ (icon_x, Qunbound))
+ x_wm_set_icon_position (f, XINT (icon_x), XINT (icon_y));
+
+ /* Start up iconic or window? */
+ x_wm_set_window_state
+ (f, (EQ (x_get_arg (dpyinfo, parms, Qvisibility, 0, 0, RES_TYPE_SYMBOL),
+ Qicon)
+ ? IconicState
+ : NormalState));
+
+ x_text_icon (f, (char *) SDATA ((!NILP (f->icon_name)
+ ? f->icon_name
+ : f->name)));
+
+ UNBLOCK_INPUT;
+ }
+
+ /* Make the GCs needed for this window, setting the
+ background, border and mouse colors; also create the
+ mouse cursor and the gray border tile. */
+
+ static char cursor_bits[] =
+ {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+ };
+
+ static void
+ x_make_gc (f)
+ struct frame *f;
+ {
+ XGCValues gc_values;
+
+ BLOCK_INPUT;
+
+ /* Create the GCs of this frame.
+ Note that many default values are used. */
+
+ /* Normal video */
+ gc_values.font = FRAME_FONT (f)->fid;
+ gc_values.foreground = f->output_data.x->foreground_pixel;
+ gc_values.background = f->output_data.x->background_pixel;
+ gc_values.line_width = 0; /* Means 1 using fast algorithm. */
+ f->output_data.x->normal_gc
+ = XCreateGC (FRAME_X_DISPLAY (f),
+ FRAME_X_WINDOW (f),
+ GCLineWidth | GCFont | GCForeground | GCBackground,
+ &gc_values);
+
+ /* Reverse video style. */
+ gc_values.foreground = f->output_data.x->background_pixel;
+ gc_values.background = f->output_data.x->foreground_pixel;
+ f->output_data.x->reverse_gc
+ = XCreateGC (FRAME_X_DISPLAY (f),
+ FRAME_X_WINDOW (f),
+ GCFont | GCForeground | GCBackground | GCLineWidth,
+ &gc_values);
+
+ /* Cursor has cursor-color background, background-color foreground. */
+ gc_values.foreground = f->output_data.x->background_pixel;
+ gc_values.background = f->output_data.x->cursor_pixel;
+ gc_values.fill_style = FillOpaqueStippled;
+ gc_values.stipple
+ = XCreateBitmapFromData (FRAME_X_DISPLAY (f),
+ FRAME_X_DISPLAY_INFO (f)->root_window,
+ cursor_bits, 16, 16);
+ f->output_data.x->cursor_gc
+ = XCreateGC (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ (GCFont | GCForeground | GCBackground
+ | GCFillStyle /* | GCStipple */ | GCLineWidth),
+ &gc_values);
+
+ /* Reliefs. */
+ f->output_data.x->white_relief.gc = 0;
+ f->output_data.x->black_relief.gc = 0;
+
+ /* Create the gray border tile used when the pointer is not in
+ the frame. Since this depends on the frame's pixel values,
+ this must be done on a per-frame basis. */
+ f->output_data.x->border_tile
+ = (XCreatePixmapFromBitmapData
+ (FRAME_X_DISPLAY (f), FRAME_X_DISPLAY_INFO (f)->root_window,
+ gray_bits, gray_width, gray_height,
+ f->output_data.x->foreground_pixel,
+ f->output_data.x->background_pixel,
+ DefaultDepth (FRAME_X_DISPLAY (f), FRAME_X_SCREEN_NUMBER (f))));
+
+ UNBLOCK_INPUT;
+ }
+
+
+ /* Free what was was allocated in x_make_gc. */
+
+ void
+ x_free_gcs (f)
+ struct frame *f;
+ {
+ Display *dpy = FRAME_X_DISPLAY (f);
+
+ BLOCK_INPUT;
+
+ if (f->output_data.x->normal_gc)
+ {
+ XFreeGC (dpy, f->output_data.x->normal_gc);
+ f->output_data.x->normal_gc = 0;
+ }
+
+ if (f->output_data.x->reverse_gc)
+ {
+ XFreeGC (dpy, f->output_data.x->reverse_gc);
+ f->output_data.x->reverse_gc = 0;
+ }
+
+ if (f->output_data.x->cursor_gc)
+ {
+ XFreeGC (dpy, f->output_data.x->cursor_gc);
+ f->output_data.x->cursor_gc = 0;
+ }
+
+ if (f->output_data.x->border_tile)
+ {
+ XFreePixmap (dpy, f->output_data.x->border_tile);
+ f->output_data.x->border_tile = 0;
+ }
+
+ UNBLOCK_INPUT;
+ }
+
+
+ /* Handler for signals raised during x_create_frame and
+ x_create_top_frame. FRAME is the frame which is partially
+ constructed. */
+
+ static Lisp_Object
+ unwind_create_frame (frame)
+ Lisp_Object frame;
+ {
+ struct frame *f = XFRAME (frame);
+
+ /* If frame is ``official'', nothing to do. */
+ if (!CONSP (Vframe_list) || !EQ (XCAR (Vframe_list), frame))
+ {
+ #if GLYPH_DEBUG
+ struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+ #endif
+
+ x_free_frame_resources (f);
+
+ /* Check that reference counts are indeed correct. */
+ xassert (dpyinfo->reference_count == dpyinfo_refcount);
+ xassert (dpyinfo->image_cache->refcount == image_cache_refcount);
+ return Qt;
+ }
+
+ return Qnil;
+ }
+
+
+ DEFUN ("x-create-frame", Fx_create_frame, Sx_create_frame,
+ 1, 1, 0,
+ doc: /* Make a new X window, which is called a "frame" in Emacs terms.
+ Returns an Emacs frame object.
+ ALIST is an alist of frame parameters.
+ If the parameters specify that the frame should not have a minibuffer,
+ and do not specify a specific minibuffer window to use,
+ then `default-minibuffer-frame' must be a frame whose minibuffer can
+ be shared by the new frame.
+
+ This function is an internal primitive--use `make-frame' instead. */)
+ (parms)
+ Lisp_Object parms;
+ {
+ struct frame *f;
+ Lisp_Object frame, tem;
+ Lisp_Object name;
+ int minibuffer_only = 0;
+ long window_prompting = 0;
+ int width, height;
+ int count = SPECPDL_INDEX ();
+ struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
+ Lisp_Object display;
+ struct x_display_info *dpyinfo = NULL;
+ Lisp_Object parent;
+ struct kboard *kb;
+
+ check_x ();
+
+ /* Use this general default value to start with
+ until we know if this frame has a specified name. */
+ Vx_resource_name = Vinvocation_name;
+
+ display = x_get_arg (dpyinfo, parms, Qdisplay, 0, 0, RES_TYPE_STRING);
+ if (EQ (display, Qunbound))
+ display = Qnil;
+ dpyinfo = check_x_display_info (display);
+ #ifdef MULTI_KBOARD
+ kb = dpyinfo->kboard;
+ #else
+ kb = &the_only_kboard;
+ #endif
+
+ name = x_get_arg (dpyinfo, parms, Qname, "name", "Name", RES_TYPE_STRING);
+ if (!STRINGP (name)
+ && ! EQ (name, Qunbound)
+ && ! NILP (name))
+ error ("Invalid frame name--not a string or nil");
+
+ if (STRINGP (name))
+ Vx_resource_name = name;
+
+ /* See if parent window is specified. */
+ parent = x_get_arg (dpyinfo, parms, Qparent_id, NULL, NULL,
RES_TYPE_NUMBER);
+ if (EQ (parent, Qunbound))
+ parent = Qnil;
+ if (! NILP (parent))
+ CHECK_NUMBER (parent);
+
+ /* make_frame_without_minibuffer can run Lisp code and garbage collect. */
+ /* No need to protect DISPLAY because that's not used after passing
+ it to make_frame_without_minibuffer. */
+ frame = Qnil;
+ GCPRO4 (parms, parent, name, frame);
+ tem = x_get_arg (dpyinfo, parms, Qminibuffer, "minibuffer", "Minibuffer",
+ RES_TYPE_SYMBOL);
+ if (EQ (tem, Qnone) || NILP (tem))
+ f = make_frame_without_minibuffer (Qnil, kb, display);
+ else if (EQ (tem, Qonly))
+ {
+ f = make_minibuffer_frame ();
+ minibuffer_only = 1;
+ }
+ else if (WINDOWP (tem))
+ f = make_frame_without_minibuffer (tem, kb, display);
+ else
+ f = make_frame (1);
+
+ XSETFRAME (frame, f);
+
+ /* Note that X Windows does support scroll bars. */
+ FRAME_CAN_HAVE_SCROLL_BARS (f) = 1;
+
+ f->output_method = output_x_window;
+ f->output_data.x = (struct x_output *) xmalloc (sizeof (struct x_output));
+ bzero (f->output_data.x, sizeof (struct x_output));
+ f->output_data.x->icon_bitmap = -1;
+ FRAME_FONTSET (f) = -1;
+ f->output_data.x->scroll_bar_foreground_pixel = -1;
+ f->output_data.x->scroll_bar_background_pixel = -1;
+ #ifdef USE_TOOLKIT_SCROLL_BARS
+ f->output_data.x->scroll_bar_top_shadow_pixel = -1;
+ f->output_data.x->scroll_bar_bottom_shadow_pixel = -1;
+ #endif /* USE_TOOLKIT_SCROLL_BARS */
+ record_unwind_protect (unwind_create_frame, frame);
+
+ f->icon_name
+ = x_get_arg (dpyinfo, parms, Qicon_name, "iconName", "Title",
+ RES_TYPE_STRING);
+ if (! STRINGP (f->icon_name))
+ f->icon_name = Qnil;
+
+ FRAME_X_DISPLAY_INFO (f) = dpyinfo;
+ #if GLYPH_DEBUG
+ image_cache_refcount = FRAME_X_IMAGE_CACHE (f)->refcount;
+ dpyinfo_refcount = dpyinfo->reference_count;
+ #endif /* GLYPH_DEBUG */
+ #ifdef MULTI_KBOARD
+ FRAME_KBOARD (f) = kb;
+ #endif
+
+ /* These colors will be set anyway later, but it's important
+ to get the color reference counts right, so initialize them! */
+ {
+ Lisp_Object black;
+ struct gcpro gcpro1;
+
+ /* Function x_decode_color can signal an error. Make
+ sure to initialize color slots so that we won't try
+ to free colors we haven't allocated. */
+ f->output_data.x->foreground_pixel = -1;
+ f->output_data.x->background_pixel = -1;
+ f->output_data.x->cursor_pixel = -1;
+ f->output_data.x->cursor_foreground_pixel = -1;
+ f->output_data.x->border_pixel = -1;
+ f->output_data.x->mouse_pixel = -1;
+
+ black = build_string ("black");
+ GCPRO1 (black);
+ f->output_data.x->foreground_pixel
+ = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
+ f->output_data.x->background_pixel
+ = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
+ f->output_data.x->cursor_pixel
+ = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
+ f->output_data.x->cursor_foreground_pixel
+ = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
+ f->output_data.x->border_pixel
+ = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
+ f->output_data.x->mouse_pixel
+ = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
+ UNGCPRO;
+ }
+
+ /* Specify the parent under which to make this X window. */
+
+ if (!NILP (parent))
+ {
+ f->output_data.x->parent_desc = (Window) XFASTINT (parent);
+ f->output_data.x->explicit_parent = 1;
+ }
+ else
+ {
+ f->output_data.x->parent_desc = FRAME_X_DISPLAY_INFO (f)->root_window;
+ f->output_data.x->explicit_parent = 0;
+ }
+
+ /* Set the name; the functions to which we pass f expect the name to
+ be set. */
+ if (EQ (name, Qunbound) || NILP (name))
+ {
+ f->name = build_string (dpyinfo->x_id_name);
+ f->explicit_name = 0;
+ }
+ else
+ {
+ f->name = name;
+ f->explicit_name = 1;
+ /* use the frame's title when getting resources for this frame. */
+ specbind (Qx_resource_name, name);
+ }
+
+ /* Extract the window parameters from the supplied values
+ that are needed to determine window geometry. */
+ {
+ Lisp_Object font;
+
+ font = x_get_arg (dpyinfo, parms, Qfont, "font", "Font", RES_TYPE_STRING);
+
+ BLOCK_INPUT;
+ /* First, try whatever font the caller has specified. */
+ if (STRINGP (font))
+ {
+ tem = Fquery_fontset (font, Qnil);
+ if (STRINGP (tem))
+ font = x_new_fontset (f, SDATA (tem));
+ else
+ font = x_new_font (f, SDATA (font));
+ }
+
+ /* Try out a font which we hope has bold and italic variations. */
+ if (!STRINGP (font))
+ font = x_new_font (f,
"-adobe-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-1");
+ if (!STRINGP (font))
+ font = x_new_font (f,
"-misc-fixed-medium-r-normal-*-*-140-*-*-c-*-iso8859-1");
+ if (! STRINGP (font))
+ font = x_new_font (f, "-*-*-medium-r-normal-*-*-140-*-*-c-*-iso8859-1");
+ if (! STRINGP (font))
+ /* This was formerly the first thing tried, but it finds too many fonts
+ and takes too long. */
+ font = x_new_font (f, "-*-*-medium-r-*-*-*-*-*-*-c-*-iso8859-1");
+ /* If those didn't work, look for something which will at least work. */
+ if (! STRINGP (font))
+ font = x_new_font (f, "-*-fixed-*-*-*-*-*-140-*-*-c-*-iso8859-1");
+ UNBLOCK_INPUT;
+ if (! STRINGP (font))
+ font = build_string ("fixed");
+
+ x_default_parameter (f, parms, Qfont, font,
+ "font", "Font", RES_TYPE_STRING);
+ }
+
+ #ifdef USE_LUCID
+ /* Prevent lwlib/xlwmenu.c from crashing because of a bug
+ whereby it fails to get any font. */
+ xlwmenu_default_font = FRAME_FONT (f);
+ #endif
+
+ x_default_parameter (f, parms, Qborder_width, make_number (2),
+ "borderWidth", "BorderWidth", RES_TYPE_NUMBER);
+
+ /* This defaults to 1 in order to match xterm. We recognize either
+ internalBorderWidth or internalBorder (which is what xterm calls
+ it). */
+ if (NILP (Fassq (Qinternal_border_width, parms)))
+ {
+ Lisp_Object value;
+
+ value = x_get_arg (dpyinfo, parms, Qinternal_border_width,
+ "internalBorder", "internalBorder", RES_TYPE_NUMBER);
+ if (! EQ (value, Qunbound))
+ parms = Fcons (Fcons (Qinternal_border_width, value),
+ parms);
+ }
+ x_default_parameter (f, parms, Qinternal_border_width, make_number (1),
+ "internalBorderWidth", "internalBorderWidth",
+ RES_TYPE_NUMBER);
+ x_default_parameter (f, parms, Qvertical_scroll_bars, Qleft,
+ "verticalScrollBars", "ScrollBars",
+ RES_TYPE_SYMBOL);
+
+ /* Also do the stuff which must be set before the window exists. */
+ x_default_parameter (f, parms, Qforeground_color, build_string ("black"),
+ "foreground", "Foreground", RES_TYPE_STRING);
+ x_default_parameter (f, parms, Qbackground_color, build_string ("white"),
+ "background", "Background", RES_TYPE_STRING);
+ x_default_parameter (f, parms, Qmouse_color, build_string ("black"),
+ "pointerColor", "Foreground", RES_TYPE_STRING);
+ x_default_parameter (f, parms, Qcursor_color, build_string ("black"),
+ "cursorColor", "Foreground", RES_TYPE_STRING);
+ x_default_parameter (f, parms, Qborder_color, build_string ("black"),
+ "borderColor", "BorderColor", RES_TYPE_STRING);
+ x_default_parameter (f, parms, Qscreen_gamma, Qnil,
+ "screenGamma", "ScreenGamma", RES_TYPE_FLOAT);
+ x_default_parameter (f, parms, Qline_spacing, Qnil,
+ "lineSpacing", "LineSpacing", RES_TYPE_NUMBER);
+ x_default_parameter (f, parms, Qleft_fringe, Qnil,
+ "leftFringe", "LeftFringe", RES_TYPE_NUMBER);
+ x_default_parameter (f, parms, Qright_fringe, Qnil,
+ "rightFringe", "RightFringe", RES_TYPE_NUMBER);
+
+ x_default_scroll_bar_color_parameter (f, parms, Qscroll_bar_foreground,
+ "scrollBarForeground",
+ "ScrollBarForeground", 1);
+ x_default_scroll_bar_color_parameter (f, parms, Qscroll_bar_background,
+ "scrollBarBackground",
+ "ScrollBarBackground", 0);
+
+ /* Init faces before x_default_parameter is called for scroll-bar
+ parameters because that function calls x_set_scroll_bar_width,
+ which calls change_frame_size, which calls Fset_window_buffer,
+ which runs hooks, which call Fvertical_motion. At the end, we
+ end up in init_iterator with a null face cache, which should not
+ happen. */
+ init_frame_faces (f);
+
+ x_default_parameter (f, parms, Qmenu_bar_lines, make_number (1),
+ "menuBar", "MenuBar", RES_TYPE_NUMBER);
+ x_default_parameter (f, parms, Qtool_bar_lines, make_number (1),
+ "toolBar", "ToolBar", RES_TYPE_NUMBER);
+ x_default_parameter (f, parms, Qbuffer_predicate, Qnil,
+ "bufferPredicate", "BufferPredicate",
+ RES_TYPE_SYMBOL);
+ x_default_parameter (f, parms, Qtitle, Qnil,
+ "title", "Title", RES_TYPE_STRING);
+ x_default_parameter (f, parms, Qwait_for_wm, Qt,
+ "waitForWM", "WaitForWM", RES_TYPE_BOOLEAN);
+ x_default_parameter (f, parms, Qfullscreen, Qnil,
+ "fullscreen", "Fullscreen", RES_TYPE_SYMBOL);
+
+ f->output_data.x->parent_desc = FRAME_X_DISPLAY_INFO (f)->root_window;
+
+ /* Compute the size of the X window. */
+ window_prompting = x_figure_window_size (f, parms, 1);
+
+ tem = x_get_arg (dpyinfo, parms, Qunsplittable, 0, 0, RES_TYPE_BOOLEAN);
+ f->no_split = minibuffer_only || EQ (tem, Qt);
+
+ /* Create the X widget or window. */
+ #ifdef USE_X_TOOLKIT
+ x_window (f, window_prompting, minibuffer_only);
+ #else
+ x_window (f);
+ #endif
+
+ x_icon (f, parms);
+ x_make_gc (f);
+
+ /* Now consider the frame official. */
+ FRAME_X_DISPLAY_INFO (f)->reference_count++;
+ Vframe_list = Fcons (frame, Vframe_list);
+
+ /* We need to do this after creating the X window, so that the
+ icon-creation functions can say whose icon they're describing. */
+ x_default_parameter (f, parms, Qicon_type, Qnil,
+ "bitmapIcon", "BitmapIcon", RES_TYPE_SYMBOL);
+
+ x_default_parameter (f, parms, Qauto_raise, Qnil,
+ "autoRaise", "AutoRaiseLower", RES_TYPE_BOOLEAN);
+ x_default_parameter (f, parms, Qauto_lower, Qnil,
+ "autoLower", "AutoRaiseLower", RES_TYPE_BOOLEAN);
+ x_default_parameter (f, parms, Qcursor_type, Qbox,
+ "cursorType", "CursorType", RES_TYPE_SYMBOL);
+ x_default_parameter (f, parms, Qscroll_bar_width, Qnil,
+ "scrollBarWidth", "ScrollBarWidth",
+ RES_TYPE_NUMBER);
+
+ /* Dimensions, especially FRAME_LINES (f), must be done via
change_frame_size.
+ Change will not be effected unless different from the current
+ FRAME_LINES (f). */
+ width = FRAME_COLS (f);
+ height = FRAME_LINES (f);
+
+ SET_FRAME_COLS (f, 0);
+ FRAME_LINES (f) = 0;
+ change_frame_size (f, height, width, 1, 0, 0);
+
+ #if defined (USE_X_TOOLKIT) || defined (USE_GTK)
+ /* Create the menu bar. */
+ if (!minibuffer_only && FRAME_EXTERNAL_MENU_BAR (f))
+ {
+ /* If this signals an error, we haven't set size hints for the
+ frame and we didn't make it visible. */
+ initialize_frame_menubar (f);
+
+ #ifndef USE_GTK
+ /* This is a no-op, except under Motif where it arranges the
+ main window for the widgets on it. */
+ lw_set_main_areas (f->output_data.x->column_widget,
+ f->output_data.x->menubar_widget,
+ f->output_data.x->edit_widget);
+ #endif /* not USE_GTK */
+ }
+ #endif /* USE_X_TOOLKIT || USE_GTK */
+
+ /* Tell the server what size and position, etc, we want, and how
+ badly we want them. This should be done after we have the menu
+ bar so that its size can be taken into account. */
+ BLOCK_INPUT;
+ x_wm_set_size_hint (f, window_prompting, 0);
+ UNBLOCK_INPUT;
+
+ /* Make the window appear on the frame and enable display, unless
+ the caller says not to. However, with explicit parent, Emacs
+ cannot control visibility, so don't try. */
+ if (! f->output_data.x->explicit_parent)
+ {
+ Lisp_Object visibility;
+
+ visibility = x_get_arg (dpyinfo, parms, Qvisibility, 0, 0,
+ RES_TYPE_SYMBOL);
+ if (EQ (visibility, Qunbound))
+ visibility = Qt;
+
+ if (EQ (visibility, Qicon))
+ x_iconify_frame (f);
+ else if (! NILP (visibility))
+ x_make_frame_visible (f);
+ else
+ /* Must have been Qnil. */
+ ;
+ }
+
+ UNGCPRO;
+
+ /* Make sure windows on this frame appear in calls to next-window
+ and similar functions. */
+ Vwindow_list = Qnil;
+
+ return unbind_to (count, frame);
+ }
+
+
+ /* FRAME is used only to get a handle on the X display. We don't pass the
+ display info directly because we're called from frame.c, which doesn't
+ know about that structure. */
+
+ Lisp_Object
+ x_get_focus_frame (frame)
+ struct frame *frame;
+ {
+ struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (frame);
+ Lisp_Object xfocus;
+ if (! dpyinfo->x_focus_frame)
+ return Qnil;
+
+ XSETFRAME (xfocus, dpyinfo->x_focus_frame);
+ return xfocus;
+ }
+
+
+ /* In certain situations, when the window manager follows a
+ click-to-focus policy, there seems to be no way around calling
+ XSetInputFocus to give another frame the input focus .
+
+ In an ideal world, XSetInputFocus should generally be avoided so
+ that applications don't interfere with the window manager's focus
+ policy. But I think it's okay to use when it's clearly done
+ following a user-command. */
+
+ DEFUN ("x-focus-frame", Fx_focus_frame, Sx_focus_frame, 1, 1, 0,
+ doc: /* Set the input focus to FRAME.
+ FRAME nil means use the selected frame. */)
+ (frame)
+ Lisp_Object frame;
+ {
+ struct frame *f = check_x_frame (frame);
+ Display *dpy = FRAME_X_DISPLAY (f);
+ int count;
+
+ BLOCK_INPUT;
+ count = x_catch_errors (dpy);
+ XSetInputFocus (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ RevertToParent, CurrentTime);
+ x_uncatch_errors (dpy, count);
+ UNBLOCK_INPUT;
+
+ return Qnil;
+ }
+
+
+ DEFUN ("xw-color-defined-p", Fxw_color_defined_p, Sxw_color_defined_p, 1, 2,
0,
+ doc: /* Internal function called by `color-defined-p', which see. */)
+ (color, frame)
+ Lisp_Object color, frame;
+ {
+ XColor foo;
+ FRAME_PTR f = check_x_frame (frame);
+
+ CHECK_STRING (color);
+
+ if (x_defined_color (f, SDATA (color), &foo, 0))
+ return Qt;
+ else
+ return Qnil;
+ }
+
+ DEFUN ("xw-color-values", Fxw_color_values, Sxw_color_values, 1, 2, 0,
+ doc: /* Internal function called by `color-values', which see. */)
+ (color, frame)
+ Lisp_Object color, frame;
+ {
+ XColor foo;
+ FRAME_PTR f = check_x_frame (frame);
+
+ CHECK_STRING (color);
+
+ if (x_defined_color (f, SDATA (color), &foo, 0))
+ {
+ Lisp_Object rgb[3];
+
+ rgb[0] = make_number (foo.red);
+ rgb[1] = make_number (foo.green);
+ rgb[2] = make_number (foo.blue);
+ return Flist (3, rgb);
+ }
+ else
+ return Qnil;
+ }
+
+ DEFUN ("xw-display-color-p", Fxw_display_color_p, Sxw_display_color_p, 0, 1,
0,
+ doc: /* Internal function called by `display-color-p', which see. */)
+ (display)
+ Lisp_Object display;
+ {
+ struct x_display_info *dpyinfo = check_x_display_info (display);
+
+ if (dpyinfo->n_planes <= 2)
+ return Qnil;
+
+ switch (dpyinfo->visual->class)
+ {
+ case StaticColor:
+ case PseudoColor:
+ case TrueColor:
+ case DirectColor:
+ return Qt;
+
+ default:
+ return Qnil;
+ }
+ }
+
+ DEFUN ("x-display-grayscale-p", Fx_display_grayscale_p,
Sx_display_grayscale_p,
+ 0, 1, 0,
+ doc: /* Return t if the X display supports shades of gray.
+ Note that color displays do support shades of gray.
+ The optional argument DISPLAY specifies which display to ask about.
+ DISPLAY should be either a frame or a display name (a string).
+ If omitted or nil, that stands for the selected frame's display. */)
+ (display)
+ Lisp_Object display;
+ {
+ struct x_display_info *dpyinfo = check_x_display_info (display);
+
+ if (dpyinfo->n_planes <= 1)
+ return Qnil;
+
+ switch (dpyinfo->visual->class)
+ {
+ case StaticColor:
+ case PseudoColor:
+ case TrueColor:
+ case DirectColor:
+ case StaticGray:
+ case GrayScale:
+ return Qt;
+
+ default:
+ return Qnil;
+ }
+ }
+
+ DEFUN ("x-display-pixel-width", Fx_display_pixel_width,
Sx_display_pixel_width,
+ 0, 1, 0,
+ doc: /* Returns the width in pixels of the X display DISPLAY.
+ The optional argument DISPLAY specifies which display to ask about.
+ DISPLAY should be either a frame or a display name (a string).
+ If omitted or nil, that stands for the selected frame's display. */)
+ (display)
+ Lisp_Object display;
+ {
+ struct x_display_info *dpyinfo = check_x_display_info (display);
+
+ return make_number (dpyinfo->width);
+ }
+
+ DEFUN ("x-display-pixel-height", Fx_display_pixel_height,
+ Sx_display_pixel_height, 0, 1, 0,
+ doc: /* Returns the height in pixels of the X display DISPLAY.
+ The optional argument DISPLAY specifies which display to ask about.
+ DISPLAY should be either a frame or a display name (a string).
+ If omitted or nil, that stands for the selected frame's display. */)
+ (display)
+ Lisp_Object display;
+ {
+ struct x_display_info *dpyinfo = check_x_display_info (display);
+
+ return make_number (dpyinfo->height);
+ }
+
+ DEFUN ("x-display-planes", Fx_display_planes, Sx_display_planes,
+ 0, 1, 0,
+ doc: /* Returns the number of bitplanes of the X display DISPLAY.
+ The optional argument DISPLAY specifies which display to ask about.
+ DISPLAY should be either a frame or a display name (a string).
+ If omitted or nil, that stands for the selected frame's display. */)
+ (display)
+ Lisp_Object display;
+ {
+ struct x_display_info *dpyinfo = check_x_display_info (display);
+
+ return make_number (dpyinfo->n_planes);
+ }
+
+ DEFUN ("x-display-color-cells", Fx_display_color_cells,
Sx_display_color_cells,
+ 0, 1, 0,
+ doc: /* Returns the number of color cells of the X display DISPLAY.
+ The optional argument DISPLAY specifies which display to ask about.
+ DISPLAY should be either a frame or a display name (a string).
+ If omitted or nil, that stands for the selected frame's display. */)
+ (display)
+ Lisp_Object display;
+ {
+ struct x_display_info *dpyinfo = check_x_display_info (display);
+
+ return make_number (DisplayCells (dpyinfo->display,
+ XScreenNumberOfScreen (dpyinfo->screen)));
+ }
+
+ DEFUN ("x-server-max-request-size", Fx_server_max_request_size,
+ Sx_server_max_request_size,
+ 0, 1, 0,
+ doc: /* Returns the maximum request size of the X server of display
DISPLAY.
+ The optional argument DISPLAY specifies which display to ask about.
+ DISPLAY should be either a frame or a display name (a string).
+ If omitted or nil, that stands for the selected frame's display. */)
+ (display)
+ Lisp_Object display;
+ {
+ struct x_display_info *dpyinfo = check_x_display_info (display);
+
+ return make_number (MAXREQUEST (dpyinfo->display));
+ }
+
+ DEFUN ("x-server-vendor", Fx_server_vendor, Sx_server_vendor, 0, 1, 0,
+ doc: /* Returns the vendor ID string of the X server of display
DISPLAY.
+ The optional argument DISPLAY specifies which display to ask about.
+ DISPLAY should be either a frame or a display name (a string).
+ If omitted or nil, that stands for the selected frame's display. */)
+ (display)
+ Lisp_Object display;
+ {
+ struct x_display_info *dpyinfo = check_x_display_info (display);
+ char *vendor = ServerVendor (dpyinfo->display);
+
+ if (! vendor) vendor = "";
+ return build_string (vendor);
+ }
+
+ DEFUN ("x-server-version", Fx_server_version, Sx_server_version, 0, 1, 0,
+ doc: /* Returns the version numbers of the X server of display DISPLAY.
+ The value is a list of three integers: the major and minor
+ version numbers of the X Protocol in use, and the vendor-specific release
+ number. See also the function `x-server-vendor'.
+
+ The optional argument DISPLAY specifies which display to ask about.
+ DISPLAY should be either a frame or a display name (a string).
+ If omitted or nil, that stands for the selected frame's display. */)
+ (display)
+ Lisp_Object display;
+ {
+ struct x_display_info *dpyinfo = check_x_display_info (display);
+ Display *dpy = dpyinfo->display;
+
+ return Fcons (make_number (ProtocolVersion (dpy)),
+ Fcons (make_number (ProtocolRevision (dpy)),
+ Fcons (make_number (VendorRelease (dpy)), Qnil)));
+ }
+
+ DEFUN ("x-display-screens", Fx_display_screens, Sx_display_screens, 0, 1, 0,
+ doc: /* Return the number of screens on the X server of display
DISPLAY.
+ The optional argument DISPLAY specifies which display to ask about.
+ DISPLAY should be either a frame or a display name (a string).
+ If omitted or nil, that stands for the selected frame's display. */)
+ (display)
+ Lisp_Object display;
+ {
+ struct x_display_info *dpyinfo = check_x_display_info (display);
+
+ return make_number (ScreenCount (dpyinfo->display));
+ }
+
+ DEFUN ("x-display-mm-height", Fx_display_mm_height, Sx_display_mm_height, 0,
1, 0,
+ doc: /* Return the height in millimeters of the X display DISPLAY.
+ The optional argument DISPLAY specifies which display to ask about.
+ DISPLAY should be either a frame or a display name (a string).
+ If omitted or nil, that stands for the selected frame's display. */)
+ (display)
+ Lisp_Object display;
+ {
+ struct x_display_info *dpyinfo = check_x_display_info (display);
+
+ return make_number (HeightMMOfScreen (dpyinfo->screen));
+ }
+
+ DEFUN ("x-display-mm-width", Fx_display_mm_width, Sx_display_mm_width, 0, 1,
0,
+ doc: /* Return the width in millimeters of the X display DISPLAY.
+ The optional argument DISPLAY specifies which display to ask about.
+ DISPLAY should be either a frame or a display name (a string).
+ If omitted or nil, that stands for the selected frame's display. */)
+ (display)
+ Lisp_Object display;
+ {
+ struct x_display_info *dpyinfo = check_x_display_info (display);
+
+ return make_number (WidthMMOfScreen (dpyinfo->screen));
+ }
+
+ DEFUN ("x-display-backing-store", Fx_display_backing_store,
+ Sx_display_backing_store, 0, 1, 0,
+ doc: /* Returns an indication of whether X display DISPLAY does
backing store.
+ The value may be `always', `when-mapped', or `not-useful'.
+ The optional argument DISPLAY specifies which display to ask about.
+ DISPLAY should be either a frame or a display name (a string).
+ If omitted or nil, that stands for the selected frame's display. */)
+ (display)
+ Lisp_Object display;
+ {
+ struct x_display_info *dpyinfo = check_x_display_info (display);
+ Lisp_Object result;
+
+ switch (DoesBackingStore (dpyinfo->screen))
+ {
+ case Always:
+ result = intern ("always");
+ break;
+
+ case WhenMapped:
+ result = intern ("when-mapped");
+ break;
+
+ case NotUseful:
+ result = intern ("not-useful");
+ break;
+
+ default:
+ error ("Strange value for BackingStore parameter of screen");
+ result = Qnil;
+ }
+
+ return result;
+ }
+
+ DEFUN ("x-display-visual-class", Fx_display_visual_class,
+ Sx_display_visual_class, 0, 1, 0,
+ doc: /* Return the visual class of the X display DISPLAY.
+ The value is one of the symbols `static-gray', `gray-scale',
+ `static-color', `pseudo-color', `true-color', or `direct-color'.
+
+ The optional argument DISPLAY specifies which display to ask about.
+ DISPLAY should be either a frame or a display name (a string).
+ If omitted or nil, that stands for the selected frame's display. */)
+ (display)
+ Lisp_Object display;
+ {
+ struct x_display_info *dpyinfo = check_x_display_info (display);
+ Lisp_Object result;
+
+ switch (dpyinfo->visual->class)
+ {
+ case StaticGray:
+ result = intern ("static-gray");
+ break;
+ case GrayScale:
+ result = intern ("gray-scale");
+ break;
+ case StaticColor:
+ result = intern ("static-color");
+ break;
+ case PseudoColor:
+ result = intern ("pseudo-color");
+ break;
+ case TrueColor:
+ result = intern ("true-color");
+ break;
+ case DirectColor:
+ result = intern ("direct-color");
+ break;
+ default:
+ error ("Display has an unknown visual class");
+ result = Qnil;
+ }
+
+ return result;
+ }
+
+ DEFUN ("x-display-save-under", Fx_display_save_under,
+ Sx_display_save_under, 0, 1, 0,
+ doc: /* Returns t if the X display DISPLAY supports the save-under
feature.
+ The optional argument DISPLAY specifies which display to ask about.
+ DISPLAY should be either a frame or a display name (a string).
+ If omitted or nil, that stands for the selected frame's display. */)
+ (display)
+ Lisp_Object display;
+ {
+ struct x_display_info *dpyinfo = check_x_display_info (display);
+
+ if (DoesSaveUnders (dpyinfo->screen) == True)
+ return Qt;
+ else
+ return Qnil;
+ }
+
+ int
+ x_pixel_width (f)
+ register struct frame *f;
+ {
+ return FRAME_PIXEL_WIDTH (f);
+ }
+
+ int
+ x_pixel_height (f)
+ register struct frame *f;
+ {
+ return FRAME_PIXEL_HEIGHT (f);
+ }
+
+ int
+ x_char_width (f)
+ register struct frame *f;
+ {
+ return FRAME_COLUMN_WIDTH (f);
+ }
+
+ int
+ x_char_height (f)
+ register struct frame *f;
+ {
+ return FRAME_LINE_HEIGHT (f);
+ }
+
+ int
+ x_screen_planes (f)
+ register struct frame *f;
+ {
+ return FRAME_X_DISPLAY_INFO (f)->n_planes;
+ }
+
+
+
+ /************************************************************************
+ X Displays
+ ************************************************************************/
+
+
+ /* Mapping visual names to visuals. */
+
+ static struct visual_class
+ {
+ char *name;
+ int class;
+ }
+ visual_classes[] =
+ {
+ {"StaticGray", StaticGray},
+ {"GrayScale", GrayScale},
+ {"StaticColor", StaticColor},
+ {"PseudoColor", PseudoColor},
+ {"TrueColor", TrueColor},
+ {"DirectColor", DirectColor},
+ {NULL, 0}
+ };
+
+
+ #ifndef HAVE_XSCREENNUMBEROFSCREEN
+
+ /* Value is the screen number of screen SCR. This is a substitute for
+ the X function with the same name when that doesn't exist. */
+
+ int
+ XScreenNumberOfScreen (scr)
+ register Screen *scr;
+ {
+ Display *dpy = scr->display;
+ int i;
+
+ for (i = 0; i < dpy->nscreens; ++i)
+ if (scr == dpy->screens + i)
+ break;
+
+ return i;
+ }
+
+ #endif /* not HAVE_XSCREENNUMBEROFSCREEN */
+
+
+ /* Select the visual that should be used on display DPYINFO. Set
+ members of DPYINFO appropriately. Called from x_term_init. */
+
+ void
+ select_visual (dpyinfo)
+ struct x_display_info *dpyinfo;
+ {
+ Display *dpy = dpyinfo->display;
+ Screen *screen = dpyinfo->screen;
+ Lisp_Object value;
+
+ /* See if a visual is specified. */
+ value = display_x_get_resource (dpyinfo,
+ build_string ("visualClass"),
+ build_string ("VisualClass"),
+ Qnil, Qnil);
+ if (STRINGP (value))
+ {
+ /* VALUE should be of the form CLASS-DEPTH, where CLASS is one
+ of `PseudoColor', `TrueColor' etc. and DEPTH is the color
+ depth, a decimal number. NAME is compared with case ignored. */
+ char *s = (char *) alloca (SBYTES (value) + 1);
+ char *dash;
+ int i, class = -1;
+ XVisualInfo vinfo;
+
+ strcpy (s, SDATA (value));
+ dash = index (s, '-');
+ if (dash)
+ {
+ dpyinfo->n_planes = atoi (dash + 1);
+ *dash = '\0';
+ }
+ else
+ /* We won't find a matching visual with depth 0, so that
+ an error will be printed below. */
+ dpyinfo->n_planes = 0;
+
+ /* Determine the visual class. */
+ for (i = 0; visual_classes[i].name; ++i)
+ if (xstricmp (s, visual_classes[i].name) == 0)
+ {
+ class = visual_classes[i].class;
+ break;
+ }
+
+ /* Look up a matching visual for the specified class. */
+ if (class == -1
+ || !XMatchVisualInfo (dpy, XScreenNumberOfScreen (screen),
+ dpyinfo->n_planes, class, &vinfo))
+ fatal ("Invalid visual specification `%s'", SDATA (value));
+
+ dpyinfo->visual = vinfo.visual;
+ }
+ else
+ {
+ int n_visuals;
+ XVisualInfo *vinfo, vinfo_template;
+
+ dpyinfo->visual = DefaultVisualOfScreen (screen);
+
+ #ifdef HAVE_X11R4
+ vinfo_template.visualid = XVisualIDFromVisual (dpyinfo->visual);
+ #else
+ vinfo_template.visualid = dpyinfo->visual->visualid;
+ #endif
+ vinfo_template.screen = XScreenNumberOfScreen (screen);
+ vinfo = XGetVisualInfo (dpy, VisualIDMask | VisualScreenMask,
+ &vinfo_template, &n_visuals);
+ if (n_visuals != 1)
+ fatal ("Can't get proper X visual info");
+
+ dpyinfo->n_planes = vinfo->depth;
+ XFree ((char *) vinfo);
+ }
+ }
+
+
+ /* Return the X display structure for the display named NAME.
+ Open a new connection if necessary. */
+
+ struct x_display_info *
+ x_display_info_for_name (name)
+ Lisp_Object name;
+ {
+ Lisp_Object names;
+ struct x_display_info *dpyinfo;
+
+ CHECK_STRING (name);
+
+ if (! EQ (Vwindow_system, intern ("x")))
+ error ("Not using X Windows");
+
+ for (dpyinfo = x_display_list, names = x_display_name_list;
+ dpyinfo;
+ dpyinfo = dpyinfo->next, names = XCDR (names))
+ {
+ Lisp_Object tem;
+ tem = Fstring_equal (XCAR (XCAR (names)), name);
+ if (!NILP (tem))
+ return dpyinfo;
+ }
+
+ /* Use this general default value to start with. */
+ Vx_resource_name = Vinvocation_name;
+
+ validate_x_resource_name ();
+
+ dpyinfo = x_term_init (name, (char *)0,
+ (char *) SDATA (Vx_resource_name));
+
+ if (dpyinfo == 0)
+ error ("Cannot connect to X server %s", SDATA (name));
+
+ x_in_use = 1;
+ XSETFASTINT (Vwindow_system_version, 11);
+
+ return dpyinfo;
+ }
+
+
+ DEFUN ("x-open-connection", Fx_open_connection, Sx_open_connection,
+ 1, 3, 0,
+ doc: /* Open a connection to an X server.
+ DISPLAY is the name of the display to connect to.
+ Optional second arg XRM-STRING is a string of resources in xrdb format.
+ If the optional third arg MUST-SUCCEED is non-nil,
+ terminate Emacs if we can't open the connection. */)
+ (display, xrm_string, must_succeed)
+ Lisp_Object display, xrm_string, must_succeed;
+ {
+ unsigned char *xrm_option;
+ struct x_display_info *dpyinfo;
+
+ CHECK_STRING (display);
+ if (! NILP (xrm_string))
+ CHECK_STRING (xrm_string);
+
+ if (! EQ (Vwindow_system, intern ("x")))
+ error ("Not using X Windows");
+
+ if (! NILP (xrm_string))
+ xrm_option = (unsigned char *) SDATA (xrm_string);
+ else
+ xrm_option = (unsigned char *) 0;
+
+ validate_x_resource_name ();
+
+ /* This is what opens the connection and sets x_current_display.
+ This also initializes many symbols, such as those used for input. */
+ dpyinfo = x_term_init (display, xrm_option,
+ (char *) SDATA (Vx_resource_name));
+
+ if (dpyinfo == 0)
+ {
+ if (!NILP (must_succeed))
+ fatal ("Cannot connect to X server %s.\n\
+ Check the DISPLAY environment variable or use `-d'.\n\
+ Also use the `xauth' program to verify that you have the proper\n\
+ authorization information needed to connect the X server.\n\
+ An insecure way to solve the problem may be to use `xhost'.\n",
+ SDATA (display));
+ else
+ error ("Cannot connect to X server %s", SDATA (display));
+ }
+
+ x_in_use = 1;
+
+ XSETFASTINT (Vwindow_system_version, 11);
+ return Qnil;
+ }
+
+ DEFUN ("x-close-connection", Fx_close_connection,
+ Sx_close_connection, 1, 1, 0,
+ doc: /* Close the connection to DISPLAY's X server.
+ For DISPLAY, specify either a frame or a display name (a string).
+ If DISPLAY is nil, that stands for the selected frame's display. */)
+ (display)
+ Lisp_Object display;
+ {
+ struct x_display_info *dpyinfo = check_x_display_info (display);
+ int i;
+
+ if (dpyinfo->reference_count > 0)
+ error ("Display still has frames on it");
+
+ BLOCK_INPUT;
+ /* Free the fonts in the font table. */
+ for (i = 0; i < dpyinfo->n_fonts; i++)
+ if (dpyinfo->font_table[i].name)
+ {
+ if (dpyinfo->font_table[i].name != dpyinfo->font_table[i].full_name)
+ xfree (dpyinfo->font_table[i].full_name);
+ xfree (dpyinfo->font_table[i].name);
+ XFreeFont (dpyinfo->display, dpyinfo->font_table[i].font);
+ }
+
+ x_destroy_all_bitmaps (dpyinfo);
+ XSetCloseDownMode (dpyinfo->display, DestroyAll);
+
+ #ifdef USE_X_TOOLKIT
+ XtCloseDisplay (dpyinfo->display);
+ #else
+ XCloseDisplay (dpyinfo->display);
+ #endif
+
+ x_delete_display (dpyinfo);
+ UNBLOCK_INPUT;
+
+ return Qnil;
+ }
+
+ DEFUN ("x-display-list", Fx_display_list, Sx_display_list, 0, 0, 0,
+ doc: /* Return the list of display names that Emacs has connections
to. */)
+ ()
+ {
+ Lisp_Object tail, result;
+
+ result = Qnil;
+ for (tail = x_display_name_list; ! NILP (tail); tail = XCDR (tail))
+ result = Fcons (XCAR (XCAR (tail)), result);
+
+ return result;
+ }
+
+ DEFUN ("x-synchronize", Fx_synchronize, Sx_synchronize, 1, 2, 0,
+ doc: /* If ON is non-nil, report X errors as soon as the erring
request is made.
+ If ON is nil, allow buffering of requests.
+ Turning on synchronization prohibits the Xlib routines from buffering
+ requests and seriously degrades performance, but makes debugging much
+ easier.
+ The optional second argument DISPLAY specifies which display to act on.
+ DISPLAY should be either a frame or a display name (a string).
+ If DISPLAY is omitted or nil, that stands for the selected frame's display.
*/)
+ (on, display)
+ Lisp_Object display, on;
+ {
+ struct x_display_info *dpyinfo = check_x_display_info (display);
+
+ XSynchronize (dpyinfo->display, !EQ (on, Qnil));
+
+ return Qnil;
+ }
+
+ /* Wait for responses to all X commands issued so far for frame F. */
+
+ void
+ x_sync (f)
+ FRAME_PTR f;
+ {
+ BLOCK_INPUT;
+ XSync (FRAME_X_DISPLAY (f), False);
+ UNBLOCK_INPUT;
+ }
+
+
+ /***********************************************************************
+ Image types
+ ***********************************************************************/
+
+ /* Value is the number of elements of vector VECTOR. */
+
+ #define DIM(VECTOR) (sizeof (VECTOR) / sizeof *(VECTOR))
+
+ /* List of supported image types. Use define_image_type to add new
+ types. Use lookup_image_type to find a type for a given symbol. */
+
+ static struct image_type *image_types;
+
+ /* The symbol `image' which is the car of the lists used to represent
+ images in Lisp. */
+
+ extern Lisp_Object Qimage;
+
+ /* The symbol `xbm' which is used as the type symbol for XBM images. */
+
+ Lisp_Object Qxbm;
+
+ /* Keywords. */
+
+ extern Lisp_Object QCwidth, QCheight, QCforeground, QCbackground, QCfile;
+ extern Lisp_Object QCdata, QCtype;
+ Lisp_Object QCascent, QCmargin, QCrelief;
+ Lisp_Object QCconversion, QCcolor_symbols, QCheuristic_mask;
+ Lisp_Object QCindex, QCmatrix, QCcolor_adjustment, QCmask;
+
+ /* Other symbols. */
+
+ Lisp_Object Qlaplace, Qemboss, Qedge_detection, Qheuristic;
+
+ /* Time in seconds after which images should be removed from the cache
+ if not displayed. */
+
+ Lisp_Object Vimage_cache_eviction_delay;
+
+ /* Function prototypes. */
+
+ static void define_image_type P_ ((struct image_type *type));
+ static struct image_type *lookup_image_type P_ ((Lisp_Object symbol));
+ static void image_error P_ ((char *format, Lisp_Object, Lisp_Object));
+ static void x_laplace P_ ((struct frame *, struct image *));
+ static void x_emboss P_ ((struct frame *, struct image *));
+ static int x_build_heuristic_mask P_ ((struct frame *, struct image *,
+ Lisp_Object));
+
+
+ /* Define a new image type from TYPE. This adds a copy of TYPE to
+ image_types and adds the symbol *TYPE->type to Vimage_types. */
+
+ static void
+ define_image_type (type)
+ struct image_type *type;
+ {
+ /* Make a copy of TYPE to avoid a bus error in a dumped Emacs.
+ The initialized data segment is read-only. */
+ struct image_type *p = (struct image_type *) xmalloc (sizeof *p);
+ bcopy (type, p, sizeof *p);
+ p->next = image_types;
+ image_types = p;
+ Vimage_types = Fcons (*p->type, Vimage_types);
+ }
+
+
+ /* Look up image type SYMBOL, and return a pointer to its image_type
+ structure. Value is null if SYMBOL is not a known image type. */
+
+ static INLINE struct image_type *
+ lookup_image_type (symbol)
+ Lisp_Object symbol;
+ {
+ struct image_type *type;
+
+ for (type = image_types; type; type = type->next)
+ if (EQ (symbol, *type->type))
+ break;
+
+ return type;
+ }
+
+
+ /* Value is non-zero if OBJECT is a valid Lisp image specification. A
+ valid image specification is a list whose car is the symbol
+ `image', and whose rest is a property list. The property list must
+ contain a value for key `:type'. That value must be the name of a
+ supported image type. The rest of the property list depends on the
+ image type. */
+
+ int
+ valid_image_p (object)
+ Lisp_Object object;
+ {
+ int valid_p = 0;
+
+ if (CONSP (object) && EQ (XCAR (object), Qimage))
+ {
+ Lisp_Object tem;
+
+ for (tem = XCDR (object); CONSP (tem); tem = XCDR (tem))
+ if (EQ (XCAR (tem), QCtype))
+ {
+ tem = XCDR (tem);
+ if (CONSP (tem) && SYMBOLP (XCAR (tem)))
+ {
+ struct image_type *type;
+ type = lookup_image_type (XCAR (tem));
+ if (type)
+ valid_p = type->valid_p (object);
+ }
+
+ break;
+ }
+ }
+
+ return valid_p;
+ }
+
+
+ /* Log error message with format string FORMAT and argument ARG.
+ Signaling an error, e.g. when an image cannot be loaded, is not a
+ good idea because this would interrupt redisplay, and the error
+ message display would lead to another redisplay. This function
+ therefore simply displays a message. */
+
+ static void
+ image_error (format, arg1, arg2)
+ char *format;
+ Lisp_Object arg1, arg2;
+ {
+ add_to_log (format, arg1, arg2);
+ }
+
+
+
+ /***********************************************************************
+ Image specifications
+ ***********************************************************************/
+
+ enum image_value_type
+ {
+ IMAGE_DONT_CHECK_VALUE_TYPE,
+ IMAGE_STRING_VALUE,
+ IMAGE_STRING_OR_NIL_VALUE,
+ IMAGE_SYMBOL_VALUE,
+ IMAGE_POSITIVE_INTEGER_VALUE,
+ IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR,
+ IMAGE_NON_NEGATIVE_INTEGER_VALUE,
+ IMAGE_ASCENT_VALUE,
+ IMAGE_INTEGER_VALUE,
+ IMAGE_FUNCTION_VALUE,
+ IMAGE_NUMBER_VALUE,
+ IMAGE_BOOL_VALUE
+ };
+
+ /* Structure used when parsing image specifications. */
+
+ struct image_keyword
+ {
+ /* Name of keyword. */
+ char *name;
+
+ /* The type of value allowed. */
+ enum image_value_type type;
+
+ /* Non-zero means key must be present. */
+ int mandatory_p;
+
+ /* Used to recognize duplicate keywords in a property list. */
+ int count;
+
+ /* The value that was found. */
+ Lisp_Object value;
+ };
+
+
+ static int parse_image_spec P_ ((Lisp_Object, struct image_keyword *,
+ int, Lisp_Object));
+ static Lisp_Object image_spec_value P_ ((Lisp_Object, Lisp_Object, int *));
+
+
+ /* Parse image spec SPEC according to KEYWORDS. A valid image spec
+ has the format (image KEYWORD VALUE ...). One of the keyword/
+ value pairs must be `:type TYPE'. KEYWORDS is a vector of
+ image_keywords structures of size NKEYWORDS describing other
+ allowed keyword/value pairs. Value is non-zero if SPEC is valid. */
+
+ static int
+ parse_image_spec (spec, keywords, nkeywords, type)
+ Lisp_Object spec;
+ struct image_keyword *keywords;
+ int nkeywords;
+ Lisp_Object type;
+ {
+ int i;
+ Lisp_Object plist;
+
+ if (!CONSP (spec) || !EQ (XCAR (spec), Qimage))
+ return 0;
+
+ plist = XCDR (spec);
+ while (CONSP (plist))
+ {
+ Lisp_Object key, value;
+
+ /* First element of a pair must be a symbol. */
+ key = XCAR (plist);
+ plist = XCDR (plist);
+ if (!SYMBOLP (key))
+ return 0;
+
+ /* There must follow a value. */
+ if (!CONSP (plist))
+ return 0;
+ value = XCAR (plist);
+ plist = XCDR (plist);
+
+ /* Find key in KEYWORDS. Error if not found. */
+ for (i = 0; i < nkeywords; ++i)
+ if (strcmp (keywords[i].name, SDATA (SYMBOL_NAME (key))) == 0)
+ break;
+
+ if (i == nkeywords)
+ continue;
+
+ /* Record that we recognized the keyword. If a keywords
+ was found more than once, it's an error. */
+ keywords[i].value = value;
+ ++keywords[i].count;
+
+ if (keywords[i].count > 1)
+ return 0;
+
+ /* Check type of value against allowed type. */
+ switch (keywords[i].type)
+ {
+ case IMAGE_STRING_VALUE:
+ if (!STRINGP (value))
+ return 0;
+ break;
+
+ case IMAGE_STRING_OR_NIL_VALUE:
+ if (!STRINGP (value) && !NILP (value))
+ return 0;
+ break;
+
+ case IMAGE_SYMBOL_VALUE:
+ if (!SYMBOLP (value))
+ return 0;
+ break;
+
+ case IMAGE_POSITIVE_INTEGER_VALUE:
+ if (!INTEGERP (value) || XINT (value) <= 0)
+ return 0;
+ break;
+
+ case IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR:
+ if (INTEGERP (value) && XINT (value) >= 0)
+ break;
+ if (CONSP (value)
+ && INTEGERP (XCAR (value)) && INTEGERP (XCDR (value))
+ && XINT (XCAR (value)) >= 0 && XINT (XCDR (value)) >= 0)
+ break;
+ return 0;
+
+ case IMAGE_ASCENT_VALUE:
+ if (SYMBOLP (value) && EQ (value, Qcenter))
+ break;
+ else if (INTEGERP (value)
+ && XINT (value) >= 0
+ && XINT (value) <= 100)
+ break;
+ return 0;
+
+ case IMAGE_NON_NEGATIVE_INTEGER_VALUE:
+ if (!INTEGERP (value) || XINT (value) < 0)
+ return 0;
+ break;
+
+ case IMAGE_DONT_CHECK_VALUE_TYPE:
+ break;
+
+ case IMAGE_FUNCTION_VALUE:
+ value = indirect_function (value);
+ if (SUBRP (value)
+ || COMPILEDP (value)
+ || (CONSP (value) && EQ (XCAR (value), Qlambda)))
+ break;
+ return 0;
+
+ case IMAGE_NUMBER_VALUE:
+ if (!INTEGERP (value) && !FLOATP (value))
+ return 0;
+ break;
+
+ case IMAGE_INTEGER_VALUE:
+ if (!INTEGERP (value))
+ return 0;
+ break;
+
+ case IMAGE_BOOL_VALUE:
+ if (!NILP (value) && !EQ (value, Qt))
+ return 0;
+ break;
+
+ default:
+ abort ();
+ break;
+ }
+
+ if (EQ (key, QCtype) && !EQ (type, value))
+ return 0;
+ }
+
+ /* Check that all mandatory fields are present. */
+ for (i = 0; i < nkeywords; ++i)
+ if (keywords[i].mandatory_p && keywords[i].count == 0)
+ return 0;
+
+ return NILP (plist);
+ }
+
+
+ /* Return the value of KEY in image specification SPEC. Value is nil
+ if KEY is not present in SPEC. if FOUND is not null, set *FOUND
+ to 1 if KEY was found in SPEC, set it to 0 otherwise. */
+
+ static Lisp_Object
+ image_spec_value (spec, key, found)
+ Lisp_Object spec, key;
+ int *found;
+ {
+ Lisp_Object tail;
+
+ xassert (valid_image_p (spec));
+
+ for (tail = XCDR (spec);
+ CONSP (tail) && CONSP (XCDR (tail));
+ tail = XCDR (XCDR (tail)))
+ {
+ if (EQ (XCAR (tail), key))
+ {
+ if (found)
+ *found = 1;
+ return XCAR (XCDR (tail));
+ }
+ }
+
+ if (found)
+ *found = 0;
+ return Qnil;
+ }
+
+
+ DEFUN ("image-size", Fimage_size, Simage_size, 1, 3, 0,
+ doc: /* Return the size of image SPEC as pair (WIDTH . HEIGHT).
+ PIXELS non-nil means return the size in pixels, otherwise return the
+ size in canonical character units.
+ FRAME is the frame on which the image will be displayed. FRAME nil
+ or omitted means use the selected frame. */)
+ (spec, pixels, frame)
+ Lisp_Object spec, pixels, frame;
+ {
+ Lisp_Object size;
+
+ size = Qnil;
+ if (valid_image_p (spec))
+ {
+ struct frame *f = check_x_frame (frame);
+ int id = lookup_image (f, spec);
+ struct image *img = IMAGE_FROM_ID (f, id);
+ int width = img->width + 2 * img->hmargin;
+ int height = img->height + 2 * img->vmargin;
+
+ if (NILP (pixels))
+ size = Fcons (make_float ((double) width / FRAME_COLUMN_WIDTH (f)),
+ make_float ((double) height / FRAME_LINE_HEIGHT (f)));
+ else
+ size = Fcons (make_number (width), make_number (height));
+ }
+ else
+ error ("Invalid image specification");
+
+ return size;
+ }
+
+
+ DEFUN ("image-mask-p", Fimage_mask_p, Simage_mask_p, 1, 2, 0,
+ doc: /* Return t if image SPEC has a mask bitmap.
+ FRAME is the frame on which the image will be displayed. FRAME nil
+ or omitted means use the selected frame. */)
+ (spec, frame)
+ Lisp_Object spec, frame;
+ {
+ Lisp_Object mask;
+
+ mask = Qnil;
+ if (valid_image_p (spec))
+ {
+ struct frame *f = check_x_frame (frame);
+ int id = lookup_image (f, spec);
+ struct image *img = IMAGE_FROM_ID (f, id);
+ if (img->mask)
+ mask = Qt;
+ }
+ else
+ error ("Invalid image specification");
+
+ return mask;
+ }
+
+
+
+ /***********************************************************************
+ Image type independent image structures
+ ***********************************************************************/
+
+ static struct image *make_image P_ ((Lisp_Object spec, unsigned hash));
+ static void free_image P_ ((struct frame *f, struct image *img));
+
+
+ /* Allocate and return a new image structure for image specification
+ SPEC. SPEC has a hash value of HASH. */
+
+ static struct image *
+ make_image (spec, hash)
+ Lisp_Object spec;
+ unsigned hash;
+ {
+ struct image *img = (struct image *) XGC_CALLOC (1, sizeof *img);
+
+ xassert (valid_image_p (spec));
+ img->type = lookup_image_type (image_spec_value (spec, QCtype, NULL));
+ xassert (img->type != NULL);
+ img->spec = spec;
+ img->data.lisp_val = Qnil;
+ img->ascent = DEFAULT_IMAGE_ASCENT;
+ img->hash = hash;
+ return img;
+ }
+
+
+ /* Free image IMG which was used on frame F, including its resources. */
+
+ static void
+ free_image (f, img)
+ struct frame *f;
+ struct image *img;
+ {
+ if (img)
+ {
+ struct image_cache *c = FRAME_X_IMAGE_CACHE (f);
+
+ /* Remove IMG from the hash table of its cache. */
+ if (img->prev)
+ img->prev->next = img->next;
+ else
+ c->buckets[img->hash % IMAGE_CACHE_BUCKETS_SIZE] = img->next;
+
+ if (img->next)
+ img->next->prev = img->prev;
+
+ c->images[img->id] = NULL;
+
+ /* Free resources, then free IMG. */
+ img->type->free (f, img);
+ XGC_FREE (img);
+ }
+ }
+
+
+ /* Prepare image IMG for display on frame F. Must be called before
+ drawing an image. */
+
+ void
+ prepare_image_for_display (f, img)
+ struct frame *f;
+ struct image *img;
+ {
+ EMACS_TIME t;
+
+ /* We're about to display IMG, so set its timestamp to `now'. */
+ EMACS_GET_TIME (t);
+ img->timestamp = EMACS_SECS (t);
+
+ /* If IMG doesn't have a pixmap yet, load it now, using the image
+ type dependent loader function. */
+ if (img->pixmap == None && !img->load_failed_p)
+ img->load_failed_p = img->type->load (f, img) == 0;
+ }
+
+
+ /* Value is the number of pixels for the ascent of image IMG when
+ drawn in face FACE. */
+
+ int
+ image_ascent (img, face)
+ struct image *img;
+ struct face *face;
+ {
+ int height = img->height + img->vmargin;
+ int ascent;
+
+ if (img->ascent == CENTERED_IMAGE_ASCENT)
+ {
+ if (face->font)
+ /* This expression is arranged so that if the image can't be
+ exactly centered, it will be moved slightly up. This is
+ because a typical font is `top-heavy' (due to the presence
+ uppercase letters), so the image placement should err towards
+ being top-heavy too. It also just generally looks better. */
+ ascent = (height + face->font->ascent - face->font->descent + 1) / 2;
+ else
+ ascent = height / 2;
+ }
+ else
+ ascent = height * img->ascent / 100.0;
+
+ return ascent;
+ }
+
+
+ /* Image background colors. */
+
+ static unsigned long
+ four_corners_best (ximg, width, height)
+ XImage *ximg;
+ unsigned long width, height;
+ {
+ unsigned long corners[4], best;
+ int i, best_count;
+
+ /* Get the colors at the corners of ximg. */
+ corners[0] = XGetPixel (ximg, 0, 0);
+ corners[1] = XGetPixel (ximg, width - 1, 0);
+ corners[2] = XGetPixel (ximg, width - 1, height - 1);
+ corners[3] = XGetPixel (ximg, 0, height - 1);
+
+ /* Choose the most frequently found color as background. */
+ for (i = best_count = 0; i < 4; ++i)
+ {
+ int j, n;
+
+ for (j = n = 0; j < 4; ++j)
+ if (corners[i] == corners[j])
+ ++n;
+
+ if (n > best_count)
+ best = corners[i], best_count = n;
+ }
+
+ return best;
+ }
+
+ /* Return the `background' field of IMG. If IMG doesn't have one yet,
+ it is guessed heuristically. If non-zero, XIMG is an existing XImage
+ object to use for the heuristic. */
+
+ unsigned long
+ image_background (img, f, ximg)
+ struct image *img;
+ struct frame *f;
+ XImage *ximg;
+ {
+ if (! img->background_valid)
+ /* IMG doesn't have a background yet, try to guess a reasonable value. */
+ {
+ int free_ximg = !ximg;
+
+ if (! ximg)
+ ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap,
+ 0, 0, img->width, img->height, ~0, ZPixmap);
+
+ img->background = four_corners_best (ximg, img->width, img->height);
+
+ if (free_ximg)
+ XDestroyImage (ximg);
+
+ img->background_valid = 1;
+ }
+
+ return img->background;
+ }
+
+ /* Return the `background_transparent' field of IMG. If IMG doesn't
+ have one yet, it is guessed heuristically. If non-zero, MASK is an
+ existing XImage object to use for the heuristic. */
+
+ int
+ image_background_transparent (img, f, mask)
+ struct image *img;
+ struct frame *f;
+ XImage *mask;
+ {
+ if (! img->background_transparent_valid)
+ /* IMG doesn't have a background yet, try to guess a reasonable value. */
+ {
+ if (img->mask)
+ {
+ int free_mask = !mask;
+
+ if (! mask)
+ mask = XGetImage (FRAME_X_DISPLAY (f), img->mask,
+ 0, 0, img->width, img->height, ~0, ZPixmap);
+
+ img->background_transparent
+ = !four_corners_best (mask, img->width, img->height);
+
+ if (free_mask)
+ XDestroyImage (mask);
+ }
+ else
+ img->background_transparent = 0;
+
+ img->background_transparent_valid = 1;
+ }
+
+ return img->background_transparent;
+ }
+
+
+ /***********************************************************************
+ Helper functions for X image types
+ ***********************************************************************/
+
+ static void x_clear_image_1 P_ ((struct frame *, struct image *, int,
+ int, int));
+ static void x_clear_image P_ ((struct frame *f, struct image *img));
+ static unsigned long x_alloc_image_color P_ ((struct frame *f,
+ struct image *img,
+ Lisp_Object color_name,
+ unsigned long dflt));
+
+
+ /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means
+ free the pixmap if any. MASK_P non-zero means clear the mask
+ pixmap if any. COLORS_P non-zero means free colors allocated for
+ the image, if any. */
+
+ static void
+ x_clear_image_1 (f, img, pixmap_p, mask_p, colors_p)
+ struct frame *f;
+ struct image *img;
+ int pixmap_p, mask_p, colors_p;
+ {
+ if (pixmap_p && img->pixmap)
+ {
+ XFreePixmap (FRAME_X_DISPLAY (f), img->pixmap);
+ img->pixmap = None;
+ img->background_valid = 0;
+ }
+
+ if (mask_p && img->mask)
+ {
+ XFreePixmap (FRAME_X_DISPLAY (f), img->mask);
+ img->mask = None;
+ img->background_transparent_valid = 0;
+ }
+
+ if (colors_p && img->ncolors)
+ {
+ x_free_colors (f, img->colors, img->ncolors);
+ xfree (img->colors);
+ img->colors = NULL;
+ img->ncolors = 0;
+ }
+ }
+
+ /* Free X resources of image IMG which is used on frame F. */
+
+ static void
+ x_clear_image (f, img)
+ struct frame *f;
+ struct image *img;
+ {
+ BLOCK_INPUT;
+ x_clear_image_1 (f, img, 1, 1, 1);
+ UNBLOCK_INPUT;
+ }
+
+
+ /* Allocate color COLOR_NAME for image IMG on frame F. If color
+ cannot be allocated, use DFLT. Add a newly allocated color to
+ IMG->colors, so that it can be freed again. Value is the pixel
+ color. */
+
+ static unsigned long
+ x_alloc_image_color (f, img, color_name, dflt)
+ struct frame *f;
+ struct image *img;
+ Lisp_Object color_name;
+ unsigned long dflt;
+ {
+ XColor color;
+ unsigned long result;
+
+ xassert (STRINGP (color_name));
+
+ if (x_defined_color (f, SDATA (color_name), &color, 1))
+ {
+ /* This isn't called frequently so we get away with simply
+ reallocating the color vector to the needed size, here. */
+ ++img->ncolors;
+ img->colors =
+ (unsigned long *) xrealloc (img->colors,
+ img->ncolors * sizeof *img->colors);
+ img->colors[img->ncolors - 1] = color.pixel;
+ result = color.pixel;
+ }
+ else
+ result = dflt;
+
+ return result;
+ }
+
+
+
+ /***********************************************************************
+ Image Cache
+ ***********************************************************************/
+
+ static void cache_image P_ ((struct frame *f, struct image *img));
+ static void postprocess_image P_ ((struct frame *, struct image *));
+
+
+ /* Return a new, initialized image cache that is allocated from the
+ heap. Call free_image_cache to free an image in the cache. */
+
+ struct image_cache *
+ make_image_cache ()
+ {
+ struct image_cache *c = (struct image_cache *) XGC_CALLOC (1, sizeof *c);
+ int size;
+
+ c->size = 50;
+ c->images = (struct image **) XGC_MALLOC (c->size * sizeof *c->images);
+ size = IMAGE_CACHE_BUCKETS_SIZE * sizeof *c->buckets;
+ c->buckets = (struct image **) XGC_MALLOC_ATOMIC (size);
+ bzero (c->buckets, size);
+ return c;
+ }
+
+
+ /* Free image cache of frame F. Be aware that X frames share image
+ caches. */
+
+ void
+ free_image_cache (f)
+ struct frame *f;
+ {
+ struct image_cache *c = FRAME_X_IMAGE_CACHE (f);
+ if (c)
+ {
+ int i;
+
+ /* Cache should not be referenced by any frame when freed. */
+ xassert (c->refcount == 0);
+
+ for (i = 0; i < c->used; ++i)
+ free_image (f, c->images[i]);
+ XGC_FREE (c->images);
+ XGC_FREE (c->buckets);
+ XGC_FREE (c);
+ FRAME_X_IMAGE_CACHE (f) = NULL;
+ }
+ }
+
+
+ /* Clear image cache of frame F. FORCE_P non-zero means free all
+ images. FORCE_P zero means clear only images that haven't been
+ displayed for some time. Should be called from time to time to
+ reduce the number of loaded images. If image-eviction-seconds is
+ non-nil, this frees images in the cache which weren't displayed for
+ at least that many seconds. */
+
+ void
+ clear_image_cache (f, force_p)
+ struct frame *f;
+ int force_p;
+ {
+ struct image_cache *c = FRAME_X_IMAGE_CACHE (f);
+
+ if (c && INTEGERP (Vimage_cache_eviction_delay))
+ {
+ EMACS_TIME t;
+ unsigned long old;
+ int i, nfreed;
+
+ EMACS_GET_TIME (t);
+ old = EMACS_SECS (t) - XFASTINT (Vimage_cache_eviction_delay);
+
+ /* Block input so that we won't be interrupted by a SIGIO
+ while being in an inconsistent state. */
+ BLOCK_INPUT;
+
+ for (i = nfreed = 0; i < c->used; ++i)
+ {
+ struct image *img = c->images[i];
+ if (img != NULL
+ && (force_p || img->timestamp < old))
+ {
+ free_image (f, img);
+ ++nfreed;
+ }
+ }
+
+ /* We may be clearing the image cache because, for example,
+ Emacs was iconified for a longer period of time. In that
+ case, current matrices may still contain references to
+ images freed above. So, clear these matrices. */
+ if (nfreed)
+ {
+ Lisp_Object tail, frame;
+
+ FOR_EACH_FRAME (tail, frame)
+ {
+ struct frame *f = XFRAME (frame);
+ if (FRAME_X_P (f)
+ && FRAME_X_IMAGE_CACHE (f) == c)
+ clear_current_matrices (f);
+ }
+
+ ++windows_or_buffers_changed;
+ }
+
+ UNBLOCK_INPUT;
+ }
+ }
+
+
+ DEFUN ("clear-image-cache", Fclear_image_cache, Sclear_image_cache,
+ 0, 1, 0,
+ doc: /* Clear the image cache of FRAME.
+ FRAME nil or omitted means use the selected frame.
+ FRAME t means clear the image caches of all frames. */)
+ (frame)
+ Lisp_Object frame;
+ {
+ if (EQ (frame, Qt))
+ {
+ Lisp_Object tail;
+
+ FOR_EACH_FRAME (tail, frame)
+ if (FRAME_X_P (XFRAME (frame)))
+ clear_image_cache (XFRAME (frame), 1);
+ }
+ else
+ clear_image_cache (check_x_frame (frame), 1);
+
+ return Qnil;
+ }
+
+
+ /* Compute masks and transform image IMG on frame F, as specified
+ by the image's specification, */
+
+ static void
+ postprocess_image (f, img)
+ struct frame *f;
+ struct image *img;
+ {
+ /* Manipulation of the image's mask. */
+ if (img->pixmap)
+ {
+ Lisp_Object conversion, spec;
+ Lisp_Object mask;
+
+ spec = img->spec;
+
+ /* `:heuristic-mask t'
+ `:mask heuristic'
+ means build a mask heuristically.
+ `:heuristic-mask (R G B)'
+ `:mask (heuristic (R G B))'
+ means build a mask from color (R G B) in the
+ image.
+ `:mask nil'
+ means remove a mask, if any. */
+
+ mask = image_spec_value (spec, QCheuristic_mask, NULL);
+ if (!NILP (mask))
+ x_build_heuristic_mask (f, img, mask);
+ else
+ {
+ int found_p;
+
+ mask = image_spec_value (spec, QCmask, &found_p);
+
+ if (EQ (mask, Qheuristic))
+ x_build_heuristic_mask (f, img, Qt);
+ else if (CONSP (mask)
+ && EQ (XCAR (mask), Qheuristic))
+ {
+ if (CONSP (XCDR (mask)))
+ x_build_heuristic_mask (f, img, XCAR (XCDR (mask)));
+ else
+ x_build_heuristic_mask (f, img, XCDR (mask));
+ }
+ else if (NILP (mask) && found_p && img->mask)
+ {
+ XFreePixmap (FRAME_X_DISPLAY (f), img->mask);
+ img->mask = None;
+ }
+ }
+
+
+ /* Should we apply an image transformation algorithm? */
+ conversion = image_spec_value (spec, QCconversion, NULL);
+ if (EQ (conversion, Qdisabled))
+ x_disable_image (f, img);
+ else if (EQ (conversion, Qlaplace))
+ x_laplace (f, img);
+ else if (EQ (conversion, Qemboss))
+ x_emboss (f, img);
+ else if (CONSP (conversion)
+ && EQ (XCAR (conversion), Qedge_detection))
+ {
+ Lisp_Object tem;
+ tem = XCDR (conversion);
+ if (CONSP (tem))
+ x_edge_detection (f, img,
+ Fplist_get (tem, QCmatrix),
+ Fplist_get (tem, QCcolor_adjustment));
+ }
+ }
+ }
+
+
+ /* Return the id of image with Lisp specification SPEC on frame F.
+ SPEC must be a valid Lisp image specification (see valid_image_p). */
+
+ int
+ lookup_image (f, spec)
+ struct frame *f;
+ Lisp_Object spec;
+ {
+ struct image_cache *c = FRAME_X_IMAGE_CACHE (f);
+ struct image *img;
+ int i;
+ unsigned hash;
+ struct gcpro gcpro1;
+ EMACS_TIME now;
+
+ /* F must be a window-system frame, and SPEC must be a valid image
+ specification. */
+ xassert (FRAME_WINDOW_P (f));
+ xassert (valid_image_p (spec));
+
+ GCPRO1 (spec);
+
+ /* Look up SPEC in the hash table of the image cache. */
+ hash = sxhash (spec, 0);
+ i = hash % IMAGE_CACHE_BUCKETS_SIZE;
+
+ for (img = c->buckets[i]; img; img = img->next)
+ if (img->hash == hash && !NILP (Fequal (img->spec, spec)))
+ break;
+
+ /* If not found, create a new image and cache it. */
+ if (img == NULL)
+ {
+ extern Lisp_Object Qpostscript;
+
+ BLOCK_INPUT;
+ img = make_image (spec, hash);
+ cache_image (f, img);
+ img->load_failed_p = img->type->load (f, img) == 0;
+
+ /* If we can't load the image, and we don't have a width and
+ height, use some arbitrary width and height so that we can
+ draw a rectangle for it. */
+ if (img->load_failed_p)
+ {
+ Lisp_Object value;
+
+ value = image_spec_value (spec, QCwidth, NULL);
+ img->width = (INTEGERP (value)
+ ? XFASTINT (value) : DEFAULT_IMAGE_WIDTH);
+ value = image_spec_value (spec, QCheight, NULL);
+ img->height = (INTEGERP (value)
+ ? XFASTINT (value) : DEFAULT_IMAGE_HEIGHT);
+ }
+ else
+ {
+ /* Handle image type independent image attributes
+ `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF',
+ `:background COLOR'. */
+ Lisp_Object ascent, margin, relief, bg;
+
+ ascent = image_spec_value (spec, QCascent, NULL);
+ if (INTEGERP (ascent))
+ img->ascent = XFASTINT (ascent);
+ else if (EQ (ascent, Qcenter))
+ img->ascent = CENTERED_IMAGE_ASCENT;
+
+ margin = image_spec_value (spec, QCmargin, NULL);
+ if (INTEGERP (margin) && XINT (margin) >= 0)
+ img->vmargin = img->hmargin = XFASTINT (margin);
+ else if (CONSP (margin) && INTEGERP (XCAR (margin))
+ && INTEGERP (XCDR (margin)))
+ {
+ if (XINT (XCAR (margin)) > 0)
+ img->hmargin = XFASTINT (XCAR (margin));
+ if (XINT (XCDR (margin)) > 0)
+ img->vmargin = XFASTINT (XCDR (margin));
+ }
+
+ relief = image_spec_value (spec, QCrelief, NULL);
+ if (INTEGERP (relief))
+ {
+ img->relief = XINT (relief);
+ img->hmargin += abs (img->relief);
+ img->vmargin += abs (img->relief);
+ }
+
+ if (! img->background_valid)
+ {
+ bg = image_spec_value (img->spec, QCbackground, NULL);
+ if (!NILP (bg))
+ {
+ img->background
+ = x_alloc_image_color (f, img, bg,
+ FRAME_BACKGROUND_PIXEL (f));
+ img->background_valid = 1;
+ }
+ }
+
+ /* Do image transformations and compute masks, unless we
+ don't have the image yet. */
+ if (!EQ (*img->type->type, Qpostscript))
+ postprocess_image (f, img);
+ }
+
+ UNBLOCK_INPUT;
+ xassert (!interrupt_input_blocked);
+ }
+
+ /* We're using IMG, so set its timestamp to `now'. */
+ EMACS_GET_TIME (now);
+ img->timestamp = EMACS_SECS (now);
+
+ UNGCPRO;
+
+ /* Value is the image id. */
+ return img->id;
+ }
+
+
+ /* Cache image IMG in the image cache of frame F. */
+
+ static void
+ cache_image (f, img)
+ struct frame *f;
+ struct image *img;
+ {
+ struct image_cache *c = FRAME_X_IMAGE_CACHE (f);
+ int i;
+
+ /* Find a free slot in c->images. */
+ for (i = 0; i < c->used; ++i)
+ if (c->images[i] == NULL)
+ break;
+
+ /* If no free slot found, maybe enlarge c->images. */
+ if (i == c->used && c->used == c->size)
+ {
+ c->size *= 2;
+ c->images = (struct image **) XGC_REALLOC (c->images,
+ c->size * sizeof *c->images);
+ }
+
+ /* Add IMG to c->images, and assign IMG an id. */
+ c->images[i] = img;
+ img->id = i;
+ if (i == c->used)
+ ++c->used;
+
+ /* Add IMG to the cache's hash table. */
+ i = img->hash % IMAGE_CACHE_BUCKETS_SIZE;
+ img->next = c->buckets[i];
+ if (img->next)
+ img->next->prev = img;
+ img->prev = NULL;
+ c->buckets[i] = img;
+ }
+
+
+ /* Call FN on every image in the image cache of frame F. Used to mark
+ Lisp Objects in the image cache. */
+
+ void
+ forall_images_in_image_cache (f, fn)
+ struct frame *f;
+ void (*fn) P_ ((struct image *img));
+ {
+ if (FRAME_LIVE_P (f) && FRAME_X_P (f))
+ {
+ struct image_cache *c = FRAME_X_IMAGE_CACHE (f);
+ if (c)
+ {
+ int i;
+ for (i = 0; i < c->used; ++i)
+ if (c->images[i])
+ fn (c->images[i]);
+ }
+ }
+ }
+
+
+
+ /***********************************************************************
+ X support code
+ ***********************************************************************/
+
+ static int x_create_x_image_and_pixmap P_ ((struct frame *, int, int, int,
+ XImage **, Pixmap *));
+ static void x_destroy_x_image P_ ((XImage *));
+ static void x_put_x_image P_ ((struct frame *, XImage *, Pixmap, int, int));
+
+
+ /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on
+ frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created.
+ Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated
+ via xmalloc. Print error messages via image_error if an error
+ occurs. Value is non-zero if successful. */
+
+ static int
+ x_create_x_image_and_pixmap (f, width, height, depth, ximg, pixmap)
+ struct frame *f;
+ int width, height, depth;
+ XImage **ximg;
+ Pixmap *pixmap;
+ {
+ Display *display = FRAME_X_DISPLAY (f);
+ Screen *screen = FRAME_X_SCREEN (f);
+ Window window = FRAME_X_WINDOW (f);
+
+ xassert (interrupt_input_blocked);
+
+ if (depth <= 0)
+ depth = DefaultDepthOfScreen (screen);
+ *ximg = XCreateImage (display, DefaultVisualOfScreen (screen),
+ depth, ZPixmap, 0, NULL, width, height,
+ depth > 16 ? 32 : depth > 8 ? 16 : 8, 0);
+ if (*ximg == NULL)
+ {
+ image_error ("Unable to allocate X image", Qnil, Qnil);
+ return 0;
+ }
+
+ /* Allocate image raster. */
+ (*ximg)->data = (char *) xmalloc ((*ximg)->bytes_per_line * height);
+
+ /* Allocate a pixmap of the same size. */
+ *pixmap = XCreatePixmap (display, window, width, height, depth);
+ if (*pixmap == None)
+ {
+ x_destroy_x_image (*ximg);
+ *ximg = NULL;
+ image_error ("Unable to create X pixmap", Qnil, Qnil);
+ return 0;
+ }
+
+ return 1;
+ }
+
+
+ /* Destroy XImage XIMG. Free XIMG->data. */
+
+ static void
+ x_destroy_x_image (ximg)
+ XImage *ximg;
+ {
+ xassert (interrupt_input_blocked);
+ if (ximg)
+ {
+ xfree (ximg->data);
+ ximg->data = NULL;
+ XDestroyImage (ximg);
+ }
+ }
+
+
+ /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT
+ are width and height of both the image and pixmap. */
+
+ static void
+ x_put_x_image (f, ximg, pixmap, width, height)
+ struct frame *f;
+ XImage *ximg;
+ Pixmap pixmap;
+ int width, height;
+ {
+ GC gc;
+
+ xassert (interrupt_input_blocked);
+ gc = XCreateGC (FRAME_X_DISPLAY (f), pixmap, 0, NULL);
+ XPutImage (FRAME_X_DISPLAY (f), pixmap, gc, ximg, 0, 0, 0, 0, width,
height);
+ XFreeGC (FRAME_X_DISPLAY (f), gc);
+ }
+
+
+
+ /***********************************************************************
+ File Handling
+ ***********************************************************************/
+
+ static Lisp_Object x_find_image_file P_ ((Lisp_Object));
+ static char *slurp_file P_ ((char *, int *));
+
+
+ /* Find image file FILE. Look in data-directory, then
+ x-bitmap-file-path. Value is the full name of the file found, or
+ nil if not found. */
+
+ static Lisp_Object
+ x_find_image_file (file)
+ Lisp_Object file;
+ {
+ Lisp_Object file_found, search_path;
+ struct gcpro gcpro1, gcpro2;
+ int fd;
+
+ file_found = Qnil;
+ search_path = Fcons (Vdata_directory, Vx_bitmap_file_path);
+ GCPRO2 (file_found, search_path);
+
+ /* Try to find FILE in data-directory, then x-bitmap-file-path. */
+ fd = openp (search_path, file, Qnil, &file_found, Qnil);
+
+ if (fd == -1)
+ file_found = Qnil;
+ else
+ close (fd);
+
+ UNGCPRO;
+ return file_found;
+ }
+
+
+ /* Read FILE into memory. Value is a pointer to a buffer allocated
+ with xmalloc holding FILE's contents. Value is null if an error
+ occurred. *SIZE is set to the size of the file. */
+
+ static char *
+ slurp_file (file, size)
+ char *file;
+ int *size;
+ {
+ FILE *fp = NULL;
+ char *buf = NULL;
+ struct stat st;
+
+ if (stat (file, &st) == 0
+ && (fp = fopen (file, "r")) != NULL
+ && (buf = (char *) xmalloc (st.st_size),
+ fread (buf, 1, st.st_size, fp) == st.st_size))
+ {
+ *size = st.st_size;
+ fclose (fp);
+ }
+ else
+ {
+ if (fp)
+ fclose (fp);
+ if (buf)
+ {
+ xfree (buf);
+ buf = NULL;
+ }
+ }
+
+ return buf;
+ }
+
+
+
+ /***********************************************************************
+ XBM images
+ ***********************************************************************/
+
+ static int xbm_scan P_ ((char **, char *, char *, int *));
+ static int xbm_load P_ ((struct frame *f, struct image *img));
+ static int xbm_load_image P_ ((struct frame *f, struct image *img,
+ char *, char *));
+ static int xbm_image_p P_ ((Lisp_Object object));
+ static int xbm_read_bitmap_data P_ ((char *, char *, int *, int *,
+ unsigned char **));
+ static int xbm_file_p P_ ((Lisp_Object));
+
+
+ /* Indices of image specification fields in xbm_format, below. */
+
+ enum xbm_keyword_index
+ {
+ XBM_TYPE,
+ XBM_FILE,
+ XBM_WIDTH,
+ XBM_HEIGHT,
+ XBM_DATA,
+ XBM_FOREGROUND,
+ XBM_BACKGROUND,
+ XBM_ASCENT,
+ XBM_MARGIN,
+ XBM_RELIEF,
+ XBM_ALGORITHM,
+ XBM_HEURISTIC_MASK,
+ XBM_MASK,
+ XBM_LAST
+ };
+
+ /* Vector of image_keyword structures describing the format
+ of valid XBM image specifications. */
+
+ static struct image_keyword xbm_format[XBM_LAST] =
+ {
+ {":type", IMAGE_SYMBOL_VALUE, 1},
+ {":file", IMAGE_STRING_VALUE, 0},
+ {":width", IMAGE_POSITIVE_INTEGER_VALUE, 0},
+ {":height", IMAGE_POSITIVE_INTEGER_VALUE, 0},
+ {":data", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0},
+ {":background", IMAGE_STRING_OR_NIL_VALUE, 0},
+ {":ascent", IMAGE_ASCENT_VALUE, 0},
+ {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0},
+ {":relief", IMAGE_INTEGER_VALUE, 0},
+ {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}
+ };
+
+ /* Structure describing the image type XBM. */
+
+ static struct image_type xbm_type =
+ {
+ &Qxbm,
+ xbm_image_p,
+ xbm_load,
+ x_clear_image,
+ NULL
+ };
+
+ /* Tokens returned from xbm_scan. */
+
+ enum xbm_token
+ {
+ XBM_TK_IDENT = 256,
+ XBM_TK_NUMBER
+ };
+
+
+ /* Return non-zero if OBJECT is a valid XBM-type image specification.
+ A valid specification is a list starting with the symbol `image'
+ The rest of the list is a property list which must contain an
+ entry `:type xbm..
+
+ If the specification specifies a file to load, it must contain
+ an entry `:file FILENAME' where FILENAME is a string.
+
+ If the specification is for a bitmap loaded from memory it must
+ contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where
+ WIDTH and HEIGHT are integers > 0. DATA may be:
+
+ 1. a string large enough to hold the bitmap data, i.e. it must
+ have a size >= (WIDTH + 7) / 8 * HEIGHT
+
+ 2. a bool-vector of size >= WIDTH * HEIGHT
+
+ 3. a vector of strings or bool-vectors, one for each line of the
+ bitmap.
+
+ 4. A string containing an in-memory XBM file. WIDTH and HEIGHT
+ may not be specified in this case because they are defined in the
+ XBM file.
+
+ Both the file and data forms may contain the additional entries
+ `:background COLOR' and `:foreground COLOR'. If not present,
+ foreground and background of the frame on which the image is
+ displayed is used. */
+
+ static int
+ xbm_image_p (object)
+ Lisp_Object object;
+ {
+ struct image_keyword kw[XBM_LAST];
+
+ bcopy (xbm_format, kw, sizeof kw);
+ if (!parse_image_spec (object, kw, XBM_LAST, Qxbm))
+ return 0;
+
+ xassert (EQ (kw[XBM_TYPE].value, Qxbm));
+
+ if (kw[XBM_FILE].count)
+ {
+ if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_DATA].count)
+ return 0;
+ }
+ else if (kw[XBM_DATA].count && xbm_file_p (kw[XBM_DATA].value))
+ {
+ /* In-memory XBM file. */
+ if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_FILE].count)
+ return 0;
+ }
+ else
+ {
+ Lisp_Object data;
+ int width, height;
+
+ /* Entries for `:width', `:height' and `:data' must be present. */
+ if (!kw[XBM_WIDTH].count
+ || !kw[XBM_HEIGHT].count
+ || !kw[XBM_DATA].count)
+ return 0;
+
+ data = kw[XBM_DATA].value;
+ width = XFASTINT (kw[XBM_WIDTH].value);
+ height = XFASTINT (kw[XBM_HEIGHT].value);
+
+ /* Check type of data, and width and height against contents of
+ data. */
+ if (VECTORP (data))
+ {
+ int i;
+
+ /* Number of elements of the vector must be >= height. */
+ if (XVECTOR (data)->size < height)
+ return 0;
+
+ /* Each string or bool-vector in data must be large enough
+ for one line of the image. */
+ for (i = 0; i < height; ++i)
+ {
+ Lisp_Object elt = XVECTOR (data)->contents[i];
+
+ if (STRINGP (elt))
+ {
+ if (SCHARS (elt)
+ < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR)
+ return 0;
+ }
+ else if (BOOL_VECTOR_P (elt))
+ {
+ if (XBOOL_VECTOR (elt)->size < width)
+ return 0;
+ }
+ else
+ return 0;
+ }
+ }
+ else if (STRINGP (data))
+ {
+ if (SCHARS (data)
+ < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR * height)
+ return 0;
+ }
+ else if (BOOL_VECTOR_P (data))
+ {
+ if (XBOOL_VECTOR (data)->size < width * height)
+ return 0;
+ }
+ else
+ return 0;
+ }
+
+ return 1;
+ }
+
+
+ /* Scan a bitmap file. FP is the stream to read from. Value is
+ either an enumerator from enum xbm_token, or a character for a
+ single-character token, or 0 at end of file. If scanning an
+ identifier, store the lexeme of the identifier in SVAL. If
+ scanning a number, store its value in *IVAL. */
+
+ static int
+ xbm_scan (s, end, sval, ival)
+ char **s, *end;
+ char *sval;
+ int *ival;
+ {
+ int c;
+
+ loop:
+
+ /* Skip white space. */
+ while (*s < end && (c = *(*s)++, isspace (c)))
+ ;
+
+ if (*s >= end)
+ c = 0;
+ else if (isdigit (c))
+ {
+ int value = 0, digit;
+
+ if (c == '0' && *s < end)
+ {
+ c = *(*s)++;
+ if (c == 'x' || c == 'X')
+ {
+ while (*s < end)
+ {
+ c = *(*s)++;
+ if (isdigit (c))
+ digit = c - '0';
+ else if (c >= 'a' && c <= 'f')
+ digit = c - 'a' + 10;
+ else if (c >= 'A' && c <= 'F')
+ digit = c - 'A' + 10;
+ else
+ break;
+ value = 16 * value + digit;
+ }
+ }
+ else if (isdigit (c))
+ {
+ value = c - '0';
+ while (*s < end
+ && (c = *(*s)++, isdigit (c)))
+ value = 8 * value + c - '0';
+ }
+ }
+ else
+ {
+ value = c - '0';
+ while (*s < end
+ && (c = *(*s)++, isdigit (c)))
+ value = 10 * value + c - '0';
+ }
+
+ if (*s < end)
+ *s = *s - 1;
+ *ival = value;
+ c = XBM_TK_NUMBER;
+ }
+ else if (isalpha (c) || c == '_')
+ {
+ *sval++ = c;
+ while (*s < end
+ && (c = *(*s)++, (isalnum (c) || c == '_')))
+ *sval++ = c;
+ *sval = 0;
+ if (*s < end)
+ *s = *s - 1;
+ c = XBM_TK_IDENT;
+ }
+ else if (c == '/' && **s == '*')
+ {
+ /* C-style comment. */
+ ++*s;
+ while (**s && (**s != '*' || *(*s + 1) != '/'))
+ ++*s;
+ if (**s)
+ {
+ *s += 2;
+ goto loop;
+ }
+ }
+
+ return c;
+ }
+
+
+ /* Replacement for XReadBitmapFileData which isn't available under old
+ X versions. CONTENTS is a pointer to a buffer to parse; END is the
+ buffer's end. Set *WIDTH and *HEIGHT to the width and height of
+ the image. Return in *DATA the bitmap data allocated with xmalloc.
+ Value is non-zero if successful. DATA null means just test if
+ CONTENTS looks like an in-memory XBM file. */
+
+ static int
+ xbm_read_bitmap_data (contents, end, width, height, data)
+ char *contents, *end;
+ int *width, *height;
+ unsigned char **data;
+ {
+ char *s = contents;
+ char buffer[BUFSIZ];
+ int padding_p = 0;
+ int v10 = 0;
+ int bytes_per_line, i, nbytes;
+ unsigned char *p;
+ int value;
+ int LA1;
+
+ #define match() \
+ LA1 = xbm_scan (&s, end, buffer, &value)
+
+ #define expect(TOKEN) \
+ if (LA1 != (TOKEN)) \
+ goto failure; \
+ else \
+ match ()
+
+ #define expect_ident(IDENT) \
+ if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \
+ match (); \
+ else \
+ goto failure
+
+ *width = *height = -1;
+ if (data)
+ *data = NULL;
+ LA1 = xbm_scan (&s, end, buffer, &value);
+
+ /* Parse defines for width, height and hot-spots. */
+ while (LA1 == '#')
+ {
+ match ();
+ expect_ident ("define");
+ expect (XBM_TK_IDENT);
+
+ if (LA1 == XBM_TK_NUMBER);
+ {
+ char *p = strrchr (buffer, '_');
+ p = p ? p + 1 : buffer;
+ if (strcmp (p, "width") == 0)
+ *width = value;
+ else if (strcmp (p, "height") == 0)
+ *height = value;
+ }
+ expect (XBM_TK_NUMBER);
+ }
+
+ if (*width < 0 || *height < 0)
+ goto failure;
+ else if (data == NULL)
+ goto success;
+
+ /* Parse bits. Must start with `static'. */
+ expect_ident ("static");
+ if (LA1 == XBM_TK_IDENT)
+ {
+ if (strcmp (buffer, "unsigned") == 0)
+ {
+ match ();
+ expect_ident ("char");
+ }
+ else if (strcmp (buffer, "short") == 0)
+ {
+ match ();
+ v10 = 1;
+ if (*width % 16 && *width % 16 < 9)
+ padding_p = 1;
+ }
+ else if (strcmp (buffer, "char") == 0)
+ match ();
+ else
+ goto failure;
+ }
+ else
+ goto failure;
+
+ expect (XBM_TK_IDENT);
+ expect ('[');
+ expect (']');
+ expect ('=');
+ expect ('{');
+
+ bytes_per_line = (*width + 7) / 8 + padding_p;
+ nbytes = bytes_per_line * *height;
+ p = *data = (char *) xmalloc (nbytes);
+
+ if (v10)
+ {
+ for (i = 0; i < nbytes; i += 2)
+ {
+ int val = value;
+ expect (XBM_TK_NUMBER);
+
+ *p++ = val;
+ if (!padding_p || ((i + 2) % bytes_per_line))
+ *p++ = value >> 8;
+
+ if (LA1 == ',' || LA1 == '}')
+ match ();
+ else
+ goto failure;
+ }
+ }
+ else
+ {
+ for (i = 0; i < nbytes; ++i)
+ {
+ int val = value;
+ expect (XBM_TK_NUMBER);
+
+ *p++ = val;
+
+ if (LA1 == ',' || LA1 == '}')
+ match ();
+ else
+ goto failure;
+ }
+ }
+
+ success:
+ return 1;
+
+ failure:
+
+ if (data && *data)
+ {
+ xfree (*data);
+ *data = NULL;
+ }
+ return 0;
+
+ #undef match
+ #undef expect
+ #undef expect_ident
+ }
+
+
+ /* Load XBM image IMG which will be displayed on frame F from buffer
+ CONTENTS. END is the end of the buffer. Value is non-zero if
+ successful. */
+
+ static int
+ xbm_load_image (f, img, contents, end)
+ struct frame *f;
+ struct image *img;
+ char *contents, *end;
+ {
+ int rc;
+ unsigned char *data;
+ int success_p = 0;
+
+ rc = xbm_read_bitmap_data (contents, end, &img->width, &img->height, &data);
+ if (rc)
+ {
+ int depth = DefaultDepthOfScreen (FRAME_X_SCREEN (f));
+ unsigned long foreground = FRAME_FOREGROUND_PIXEL (f);
+ unsigned long background = FRAME_BACKGROUND_PIXEL (f);
+ Lisp_Object value;
+
+ xassert (img->width > 0 && img->height > 0);
+
+ /* Get foreground and background colors, maybe allocate colors. */
+ value = image_spec_value (img->spec, QCforeground, NULL);
+ if (!NILP (value))
+ foreground = x_alloc_image_color (f, img, value, foreground);
+ value = image_spec_value (img->spec, QCbackground, NULL);
+ if (!NILP (value))
+ {
+ background = x_alloc_image_color (f, img, value, background);
+ img->background = background;
+ img->background_valid = 1;
+ }
+
+ img->pixmap
+ = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f),
+ FRAME_X_WINDOW (f),
+ data,
+ img->width, img->height,
+ foreground, background,
+ depth);
+ xfree (data);
+
+ if (img->pixmap == None)
+ {
+ x_clear_image (f, img);
+ image_error ("Unable to create X pixmap for `%s'", img->spec, Qnil);
+ }
+ else
+ success_p = 1;
+ }
+ else
+ image_error ("Error loading XBM image `%s'", img->spec, Qnil);
+
+ return success_p;
+ }
+
+
+ /* Value is non-zero if DATA looks like an in-memory XBM file. */
+
+ static int
+ xbm_file_p (data)
+ Lisp_Object data;
+ {
+ int w, h;
+ return (STRINGP (data)
+ && xbm_read_bitmap_data (SDATA (data),
+ (SDATA (data)
+ + SBYTES (data)),
+ &w, &h, NULL));
+ }
+
+
+ /* Fill image IMG which is used on frame F with pixmap data. Value is
+ non-zero if successful. */
+
+ static int
+ xbm_load (f, img)
+ struct frame *f;
+ struct image *img;
+ {
+ int success_p = 0;
+ Lisp_Object file_name;
+
+ xassert (xbm_image_p (img->spec));
+
+ /* If IMG->spec specifies a file name, create a non-file spec from it. */
+ file_name = image_spec_value (img->spec, QCfile, NULL);
+ if (STRINGP (file_name))
+ {
+ Lisp_Object file;
+ char *contents;
+ int size;
+ struct gcpro gcpro1;
+
+ file = x_find_image_file (file_name);
+ GCPRO1 (file);
+ if (!STRINGP (file))
+ {
+ image_error ("Cannot find image file `%s'", file_name, Qnil);
+ UNGCPRO;
+ return 0;
+ }
+
+ contents = slurp_file (SDATA (file), &size);
+ if (contents == NULL)
+ {
+ image_error ("Error loading XBM image `%s'", img->spec, Qnil);
+ UNGCPRO;
+ return 0;
+ }
+
+ success_p = xbm_load_image (f, img, contents, contents + size);
+ UNGCPRO;
+ }
+ else
+ {
+ struct image_keyword fmt[XBM_LAST];
+ Lisp_Object data;
+ int depth;
+ unsigned long foreground = FRAME_FOREGROUND_PIXEL (f);
+ unsigned long background = FRAME_BACKGROUND_PIXEL (f);
+ char *bits;
+ int parsed_p;
+ int in_memory_file_p = 0;
+
+ /* See if data looks like an in-memory XBM file. */
+ data = image_spec_value (img->spec, QCdata, NULL);
+ in_memory_file_p = xbm_file_p (data);
+
+ /* Parse the image specification. */
+ bcopy (xbm_format, fmt, sizeof fmt);
+ parsed_p = parse_image_spec (img->spec, fmt, XBM_LAST, Qxbm);
+ xassert (parsed_p);
+
+ /* Get specified width, and height. */
+ if (!in_memory_file_p)
+ {
+ img->width = XFASTINT (fmt[XBM_WIDTH].value);
+ img->height = XFASTINT (fmt[XBM_HEIGHT].value);
+ xassert (img->width > 0 && img->height > 0);
+ }
+
+ /* Get foreground and background colors, maybe allocate colors. */
+ if (fmt[XBM_FOREGROUND].count
+ && STRINGP (fmt[XBM_FOREGROUND].value))
+ foreground = x_alloc_image_color (f, img, fmt[XBM_FOREGROUND].value,
+ foreground);
+ if (fmt[XBM_BACKGROUND].count
+ && STRINGP (fmt[XBM_BACKGROUND].value))
+ background = x_alloc_image_color (f, img, fmt[XBM_BACKGROUND].value,
+ background);
+
+ if (in_memory_file_p)
+ success_p = xbm_load_image (f, img, SDATA (data),
+ (SDATA (data)
+ + SBYTES (data)));
+ else
+ {
+ if (VECTORP (data))
+ {
+ int i;
+ char *p;
+ int nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR;
+
+ p = bits = (char *) alloca (nbytes * img->height);
+ for (i = 0; i < img->height; ++i, p += nbytes)
+ {
+ Lisp_Object line = XVECTOR (data)->contents[i];
+ if (STRINGP (line))
+ bcopy (SDATA (line), p, nbytes);
+ else
+ bcopy (XBOOL_VECTOR (line)->data, p, nbytes);
+ }
+ }
+ else if (STRINGP (data))
+ bits = SDATA (data);
+ else
+ bits = XBOOL_VECTOR (data)->data;
+
+ /* Create the pixmap. */
+ depth = DefaultDepthOfScreen (FRAME_X_SCREEN (f));
+ img->pixmap
+ = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f),
+ FRAME_X_WINDOW (f),
+ bits,
+ img->width, img->height,
+ foreground, background,
+ depth);
+ if (img->pixmap)
+ success_p = 1;
+ else
+ {
+ image_error ("Unable to create pixmap for XBM image `%s'",
+ img->spec, Qnil);
+ x_clear_image (f, img);
+ }
+ }
+ }
+
+ return success_p;
+ }
+
+
+
+ /***********************************************************************
+ XPM images
+ ***********************************************************************/
+
+ #if HAVE_XPM
+
+ static int xpm_image_p P_ ((Lisp_Object object));
+ static int xpm_load P_ ((struct frame *f, struct image *img));
+ static int xpm_valid_color_symbols_p P_ ((Lisp_Object));
+
+ #include "X11/xpm.h"
+
+ /* The symbol `xpm' identifying XPM-format images. */
+
+ Lisp_Object Qxpm;
+
+ /* Indices of image specification fields in xpm_format, below. */
+
+ enum xpm_keyword_index
+ {
+ XPM_TYPE,
+ XPM_FILE,
+ XPM_DATA,
+ XPM_ASCENT,
+ XPM_MARGIN,
+ XPM_RELIEF,
+ XPM_ALGORITHM,
+ XPM_HEURISTIC_MASK,
+ XPM_MASK,
+ XPM_COLOR_SYMBOLS,
+ XPM_BACKGROUND,
+ XPM_LAST
+ };
+
+ /* Vector of image_keyword structures describing the format
+ of valid XPM image specifications. */
+
+ static struct image_keyword xpm_format[XPM_LAST] =
+ {
+ {":type", IMAGE_SYMBOL_VALUE, 1},
+ {":file", IMAGE_STRING_VALUE, 0},
+ {":data", IMAGE_STRING_VALUE, 0},
+ {":ascent", IMAGE_ASCENT_VALUE, 0},
+ {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0},
+ {":relief", IMAGE_INTEGER_VALUE, 0},
+ {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":background", IMAGE_STRING_OR_NIL_VALUE, 0}
+ };
+
+ /* Structure describing the image type XBM. */
+
+ static struct image_type xpm_type =
+ {
+ &Qxpm,
+ xpm_image_p,
+ xpm_load,
+ x_clear_image,
+ NULL
+ };
+
+
+ /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation
+ functions for allocating image colors. Our own functions handle
+ color allocation failures more gracefully than the ones on the XPM
+ lib. */
+
+ #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure
+ #define ALLOC_XPM_COLORS
+ #endif
+
+ #ifdef ALLOC_XPM_COLORS
+
+ static void xpm_init_color_cache P_ ((struct frame *, XpmAttributes *));
+ static void xpm_free_color_cache P_ ((void));
+ static int xpm_lookup_color P_ ((struct frame *, char *, XColor *));
+ static int xpm_color_bucket P_ ((char *));
+ static struct xpm_cached_color *xpm_cache_color P_ ((struct frame *, char *,
+ XColor *, int));
+
+ /* An entry in a hash table used to cache color definitions of named
+ colors. This cache is necessary to speed up XPM image loading in
+ case we do color allocations ourselves. Without it, we would need
+ a call to XParseColor per pixel in the image. */
+
+ struct xpm_cached_color
+ {
+ /* Next in collision chain. */
+ struct xpm_cached_color *next;
+
+ /* Color definition (RGB and pixel color). */
+ XColor color;
+
+ /* Color name. */
+ char name[1];
+ };
+
+ /* The hash table used for the color cache, and its bucket vector
+ size. */
+
+ #define XPM_COLOR_CACHE_BUCKETS 1001
+ struct xpm_cached_color **xpm_color_cache;
+
+ /* Initialize the color cache. */
+
+ static void
+ xpm_init_color_cache (f, attrs)
+ struct frame *f;
+ XpmAttributes *attrs;
+ {
+ size_t nbytes = XPM_COLOR_CACHE_BUCKETS * sizeof *xpm_color_cache;
+ xpm_color_cache = (struct xpm_cached_color **) xmalloc (nbytes);
+ memset (xpm_color_cache, 0, nbytes);
+ init_color_table ();
+
+ if (attrs->valuemask & XpmColorSymbols)
+ {
+ int i;
+ XColor color;
+
+ for (i = 0; i < attrs->numsymbols; ++i)
+ if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f),
+ attrs->colorsymbols[i].value, &color))
+ {
+ color.pixel = lookup_rgb_color (f, color.red, color.green,
+ color.blue);
+ xpm_cache_color (f, attrs->colorsymbols[i].name, &color, -1);
+ }
+ }
+ }
+
+
+ /* Free the color cache. */
+
+ static void
+ xpm_free_color_cache ()
+ {
+ struct xpm_cached_color *p, *next;
+ int i;
+
+ for (i = 0; i < XPM_COLOR_CACHE_BUCKETS; ++i)
+ for (p = xpm_color_cache[i]; p; p = next)
+ {
+ next = p->next;
+ xfree (p);
+ }
+
+ xfree (xpm_color_cache);
+ xpm_color_cache = NULL;
+ free_color_table ();
+ }
+
+
+ /* Return the bucket index for color named COLOR_NAME in the color
+ cache. */
+
+ static int
+ xpm_color_bucket (color_name)
+ char *color_name;
+ {
+ unsigned h = 0;
+ char *s;
+
+ for (s = color_name; *s; ++s)
+ h = (h << 2) ^ *s;
+ return h %= XPM_COLOR_CACHE_BUCKETS;
+ }
+
+
+ /* On frame F, cache values COLOR for color with name COLOR_NAME.
+ BUCKET, if >= 0, is a precomputed bucket index. Value is the cache
+ entry added. */
+
+ static struct xpm_cached_color *
+ xpm_cache_color (f, color_name, color, bucket)
+ struct frame *f;
+ char *color_name;
+ XColor *color;
+ int bucket;
+ {
+ size_t nbytes;
+ struct xpm_cached_color *p;
+
+ if (bucket < 0)
+ bucket = xpm_color_bucket (color_name);
+
+ nbytes = sizeof *p + strlen (color_name);
+ p = (struct xpm_cached_color *) xmalloc (nbytes);
+ strcpy (p->name, color_name);
+ p->color = *color;
+ p->next = xpm_color_cache[bucket];
+ xpm_color_cache[bucket] = p;
+ return p;
+ }
+
+
+ /* Look up color COLOR_NAME for frame F in the color cache. If found,
+ return the cached definition in *COLOR. Otherwise, make a new
+ entry in the cache and allocate the color. Value is zero if color
+ allocation failed. */
+
+ static int
+ xpm_lookup_color (f, color_name, color)
+ struct frame *f;
+ char *color_name;
+ XColor *color;
+ {
+ struct xpm_cached_color *p;
+ int h = xpm_color_bucket (color_name);
+
+ for (p = xpm_color_cache[h]; p; p = p->next)
+ if (strcmp (p->name, color_name) == 0)
+ break;
+
+ if (p != NULL)
+ *color = p->color;
+ else if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f),
+ color_name, color))
+ {
+ color->pixel = lookup_rgb_color (f, color->red, color->green,
+ color->blue);
+ p = xpm_cache_color (f, color_name, color, h);
+ }
+ /* You get `opaque' at least from ImageMagick converting pbm to xpm
+ with transparency, and it's useful. */
+ else if (strcmp ("opaque", color_name) == 0)
+ {
+ bzero (color, sizeof (XColor)); /* Is this necessary/correct? */
+ color->pixel = FRAME_FOREGROUND_PIXEL (f);
+ p = xpm_cache_color (f, color_name, color, h);
+ }
+
+ return p != NULL;
+ }
+
+
+ /* Callback for allocating color COLOR_NAME. Called from the XPM lib.
+ CLOSURE is a pointer to the frame on which we allocate the
+ color. Return in *COLOR the allocated color. Value is non-zero
+ if successful. */
+
+ static int
+ xpm_alloc_color (dpy, cmap, color_name, color, closure)
+ Display *dpy;
+ Colormap cmap;
+ char *color_name;
+ XColor *color;
+ void *closure;
+ {
+ return xpm_lookup_color ((struct frame *) closure, color_name, color);
+ }
+
+
+ /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE
+ is a pointer to the frame on which we allocate the color. Value is
+ non-zero if successful. */
+
+ static int
+ xpm_free_colors (dpy, cmap, pixels, npixels, closure)
+ Display *dpy;
+ Colormap cmap;
+ Pixel *pixels;
+ int npixels;
+ void *closure;
+ {
+ return 1;
+ }
+
+ #endif /* ALLOC_XPM_COLORS */
+
+
+ /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list
+ for XPM images. Such a list must consist of conses whose car and
+ cdr are strings. */
+
+ static int
+ xpm_valid_color_symbols_p (color_symbols)
+ Lisp_Object color_symbols;
+ {
+ while (CONSP (color_symbols))
+ {
+ Lisp_Object sym = XCAR (color_symbols);
+ if (!CONSP (sym)
+ || !STRINGP (XCAR (sym))
+ || !STRINGP (XCDR (sym)))
+ break;
+ color_symbols = XCDR (color_symbols);
+ }
+
+ return NILP (color_symbols);
+ }
+
+
+ /* Value is non-zero if OBJECT is a valid XPM image specification. */
+
+ static int
+ xpm_image_p (object)
+ Lisp_Object object;
+ {
+ struct image_keyword fmt[XPM_LAST];
+ bcopy (xpm_format, fmt, sizeof fmt);
+ return (parse_image_spec (object, fmt, XPM_LAST, Qxpm)
+ /* Either `:file' or `:data' must be present. */
+ && fmt[XPM_FILE].count + fmt[XPM_DATA].count == 1
+ /* Either no `:color-symbols' or it's a list of conses
+ whose car and cdr are strings. */
+ && (fmt[XPM_COLOR_SYMBOLS].count == 0
+ || xpm_valid_color_symbols_p (fmt[XPM_COLOR_SYMBOLS].value)));
+ }
+
+
+ /* Load image IMG which will be displayed on frame F. Value is
+ non-zero if successful. */
+
+ static int
+ xpm_load (f, img)
+ struct frame *f;
+ struct image *img;
+ {
+ int rc;
+ XpmAttributes attrs;
+ Lisp_Object specified_file, color_symbols;
+
+ /* Configure the XPM lib. Use the visual of frame F. Allocate
+ close colors. Return colors allocated. */
+ bzero (&attrs, sizeof attrs);
+ attrs.visual = FRAME_X_VISUAL (f);
+ attrs.colormap = FRAME_X_COLORMAP (f);
+ attrs.valuemask |= XpmVisual;
+ attrs.valuemask |= XpmColormap;
+
+ #ifdef ALLOC_XPM_COLORS
+ /* Allocate colors with our own functions which handle
+ failing color allocation more gracefully. */
+ attrs.color_closure = f;
+ attrs.alloc_color = xpm_alloc_color;
+ attrs.free_colors = xpm_free_colors;
+ attrs.valuemask |= XpmAllocColor | XpmFreeColors | XpmColorClosure;
+ #else /* not ALLOC_XPM_COLORS */
+ /* Let the XPM lib allocate colors. */
+ attrs.valuemask |= XpmReturnAllocPixels;
+ #ifdef XpmAllocCloseColors
+ attrs.alloc_close_colors = 1;
+ attrs.valuemask |= XpmAllocCloseColors;
+ #else /* not XpmAllocCloseColors */
+ attrs.closeness = 600;
+ attrs.valuemask |= XpmCloseness;
+ #endif /* not XpmAllocCloseColors */
+ #endif /* ALLOC_XPM_COLORS */
+
+ /* If image specification contains symbolic color definitions, add
+ these to `attrs'. */
+ color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL);
+ if (CONSP (color_symbols))
+ {
+ Lisp_Object tail;
+ XpmColorSymbol *xpm_syms;
+ int i, size;
+
+ attrs.valuemask |= XpmColorSymbols;
+
+ /* Count number of symbols. */
+ attrs.numsymbols = 0;
+ for (tail = color_symbols; CONSP (tail); tail = XCDR (tail))
+ ++attrs.numsymbols;
+
+ /* Allocate an XpmColorSymbol array. */
+ size = attrs.numsymbols * sizeof *xpm_syms;
+ xpm_syms = (XpmColorSymbol *) alloca (size);
+ bzero (xpm_syms, size);
+ attrs.colorsymbols = xpm_syms;
+
+ /* Fill the color symbol array. */
+ for (tail = color_symbols, i = 0;
+ CONSP (tail);
+ ++i, tail = XCDR (tail))
+ {
+ Lisp_Object name = XCAR (XCAR (tail));
+ Lisp_Object color = XCDR (XCAR (tail));
+ xpm_syms[i].name = (char *) alloca (SCHARS (name) + 1);
+ strcpy (xpm_syms[i].name, SDATA (name));
+ xpm_syms[i].value = (char *) alloca (SCHARS (color) + 1);
+ strcpy (xpm_syms[i].value, SDATA (color));
+ }
+ }
+
+ /* Create a pixmap for the image, either from a file, or from a
+ string buffer containing data in the same format as an XPM file. */
+ #ifdef ALLOC_XPM_COLORS
+ xpm_init_color_cache (f, &attrs);
+ #endif
+
+ specified_file = image_spec_value (img->spec, QCfile, NULL);
+ if (STRINGP (specified_file))
+ {
+ Lisp_Object file = x_find_image_file (specified_file);
+ if (!STRINGP (file))
+ {
+ image_error ("Cannot find image file `%s'", specified_file, Qnil);
+ return 0;
+ }
+
+ rc = XpmReadFileToPixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ SDATA (file), &img->pixmap, &img->mask,
+ &attrs);
+ }
+ else
+ {
+ Lisp_Object buffer = image_spec_value (img->spec, QCdata, NULL);
+ rc = XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ SDATA (buffer),
+ &img->pixmap, &img->mask,
+ &attrs);
+ }
+
+ if (rc == XpmSuccess)
+ {
+ #ifdef ALLOC_XPM_COLORS
+ img->colors = colors_in_color_table (&img->ncolors);
+ #else /* not ALLOC_XPM_COLORS */
+ int i;
+
+ img->ncolors = attrs.nalloc_pixels;
+ img->colors = (unsigned long *) xmalloc (img->ncolors
+ * sizeof *img->colors);
+ for (i = 0; i < attrs.nalloc_pixels; ++i)
+ {
+ img->colors[i] = attrs.alloc_pixels[i];
+ #ifdef DEBUG_X_COLORS
+ register_color (img->colors[i]);
+ #endif
+ }
+ #endif /* not ALLOC_XPM_COLORS */
+
+ img->width = attrs.width;
+ img->height = attrs.height;
+ xassert (img->width > 0 && img->height > 0);
+
+ /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */
+ XpmFreeAttributes (&attrs);
+ }
+ else
+ {
+ switch (rc)
+ {
+ case XpmOpenFailed:
+ image_error ("Error opening XPM file (%s)", img->spec, Qnil);
+ break;
+
+ case XpmFileInvalid:
+ image_error ("Invalid XPM file (%s)", img->spec, Qnil);
+ break;
+
+ case XpmNoMemory:
+ image_error ("Out of memory (%s)", img->spec, Qnil);
+ break;
+
+ case XpmColorFailed:
+ image_error ("Color allocation error (%s)", img->spec, Qnil);
+ break;
+
+ default:
+ image_error ("Unknown error (%s)", img->spec, Qnil);
+ break;
+ }
+ }
+
+ #ifdef ALLOC_XPM_COLORS
+ xpm_free_color_cache ();
+ #endif
+ return rc == XpmSuccess;
+ }
+
+ #endif /* HAVE_XPM != 0 */
+
+
+ /***********************************************************************
+ Color table
+ ***********************************************************************/
+
+ /* An entry in the color table mapping an RGB color to a pixel color. */
+
+ struct ct_color
+ {
+ int r, g, b;
+ unsigned long pixel;
+
+ /* Next in color table collision list. */
+ struct ct_color *next;
+ };
+
+ /* The bucket vector size to use. Must be prime. */
+
+ #define CT_SIZE 101
+
+ /* Value is a hash of the RGB color given by R, G, and B. */
+
+ #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B))
+
+ /* The color hash table. */
+
+ struct ct_color **ct_table;
+
+ /* Number of entries in the color table. */
+
+ int ct_colors_allocated;
+
+ /* Initialize the color table. */
+
+ static void
+ init_color_table ()
+ {
+ int size = CT_SIZE * sizeof (*ct_table);
+ ct_table = (struct ct_color **) xmalloc (size);
+ bzero (ct_table, size);
+ ct_colors_allocated = 0;
+ }
+
+
+ /* Free memory associated with the color table. */
+
+ static void
+ free_color_table ()
+ {
+ int i;
+ struct ct_color *p, *next;
+
+ for (i = 0; i < CT_SIZE; ++i)
+ for (p = ct_table[i]; p; p = next)
+ {
+ next = p->next;
+ xfree (p);
+ }
+
+ xfree (ct_table);
+ ct_table = NULL;
+ }
+
+
+ /* Value is a pixel color for RGB color R, G, B on frame F. If an
+ entry for that color already is in the color table, return the
+ pixel color of that entry. Otherwise, allocate a new color for R,
+ G, B, and make an entry in the color table. */
+
+ static unsigned long
+ lookup_rgb_color (f, r, g, b)
+ struct frame *f;
+ int r, g, b;
+ {
+ unsigned hash = CT_HASH_RGB (r, g, b);
+ int i = hash % CT_SIZE;
+ struct ct_color *p;
+
+ for (p = ct_table[i]; p; p = p->next)
+ if (p->r == r && p->g == g && p->b == b)
+ break;
+
+ if (p == NULL)
+ {
+ XColor color;
+ Colormap cmap;
+ int rc;
+
+ color.red = r;
+ color.green = g;
+ color.blue = b;
+
+ cmap = FRAME_X_COLORMAP (f);
+ rc = x_alloc_nearest_color (f, cmap, &color);
+
+ if (rc)
+ {
+ ++ct_colors_allocated;
+
+ p = (struct ct_color *) xmalloc (sizeof *p);
+ p->r = r;
+ p->g = g;
+ p->b = b;
+ p->pixel = color.pixel;
+ p->next = ct_table[i];
+ ct_table[i] = p;
+ }
+ else
+ return FRAME_FOREGROUND_PIXEL (f);
+ }
+
+ return p->pixel;
+ }
+
+
+ /* Look up pixel color PIXEL which is used on frame F in the color
+ table. If not already present, allocate it. Value is PIXEL. */
+
+ static unsigned long
+ lookup_pixel_color (f, pixel)
+ struct frame *f;
+ unsigned long pixel;
+ {
+ int i = pixel % CT_SIZE;
+ struct ct_color *p;
+
+ for (p = ct_table[i]; p; p = p->next)
+ if (p->pixel == pixel)
+ break;
+
+ if (p == NULL)
+ {
+ XColor color;
+ Colormap cmap;
+ int rc;
+
+ cmap = FRAME_X_COLORMAP (f);
+ color.pixel = pixel;
+ x_query_color (f, &color);
+ rc = x_alloc_nearest_color (f, cmap, &color);
+
+ if (rc)
+ {
+ ++ct_colors_allocated;
+
+ p = (struct ct_color *) xmalloc (sizeof *p);
+ p->r = color.red;
+ p->g = color.green;
+ p->b = color.blue;
+ p->pixel = pixel;
+ p->next = ct_table[i];
+ ct_table[i] = p;
+ }
+ else
+ return FRAME_FOREGROUND_PIXEL (f);
+ }
+
+ return p->pixel;
+ }
+
+
+ /* Value is a vector of all pixel colors contained in the color table,
+ allocated via xmalloc. Set *N to the number of colors. */
+
+ static unsigned long *
+ colors_in_color_table (n)
+ int *n;
+ {
+ int i, j;
+ struct ct_color *p;
+ unsigned long *colors;
+
+ if (ct_colors_allocated == 0)
+ {
+ *n = 0;
+ colors = NULL;
+ }
+ else
+ {
+ colors = (unsigned long *) xmalloc (ct_colors_allocated
+ * sizeof *colors);
+ *n = ct_colors_allocated;
+
+ for (i = j = 0; i < CT_SIZE; ++i)
+ for (p = ct_table[i]; p; p = p->next)
+ colors[j++] = p->pixel;
+ }
+
+ return colors;
+ }
+
+
+
+ /***********************************************************************
+ Algorithms
+ ***********************************************************************/
+
+ static XColor *x_to_xcolors P_ ((struct frame *, struct image *, int));
+ static void x_from_xcolors P_ ((struct frame *, struct image *, XColor *));
+ static void x_detect_edges P_ ((struct frame *, struct image *, int[9], int));
+
+ /* Non-zero means draw a cross on images having `:conversion
+ disabled'. */
+
+ int cross_disabled_images;
+
+ /* Edge detection matrices for different edge-detection
+ strategies. */
+
+ static int emboss_matrix[9] = {
+ /* x - 1 x x + 1 */
+ 2, -1, 0, /* y - 1 */
+ -1, 0, 1, /* y */
+ 0, 1, -2 /* y + 1 */
+ };
+
+ static int laplace_matrix[9] = {
+ /* x - 1 x x + 1 */
+ 1, 0, 0, /* y - 1 */
+ 0, 0, 0, /* y */
+ 0, 0, -1 /* y + 1 */
+ };
+
+ /* Value is the intensity of the color whose red/green/blue values
+ are R, G, and B. */
+
+ #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6)
+
+
+ /* On frame F, return an array of XColor structures describing image
+ IMG->pixmap. Each XColor structure has its pixel color set. RGB_P
+ non-zero means also fill the red/green/blue members of the XColor
+ structures. Value is a pointer to the array of XColors structures,
+ allocated with xmalloc; it must be freed by the caller. */
+
+ static XColor *
+ x_to_xcolors (f, img, rgb_p)
+ struct frame *f;
+ struct image *img;
+ int rgb_p;
+ {
+ int x, y;
+ XColor *colors, *p;
+ XImage *ximg;
+
+ colors = (XColor *) xmalloc (img->width * img->height * sizeof *colors);
+
+ /* Get the X image IMG->pixmap. */
+ ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap,
+ 0, 0, img->width, img->height, ~0, ZPixmap);
+
+ /* Fill the `pixel' members of the XColor array. I wished there
+ were an easy and portable way to circumvent XGetPixel. */
+ p = colors;
+ for (y = 0; y < img->height; ++y)
+ {
+ XColor *row = p;
+
+ for (x = 0; x < img->width; ++x, ++p)
+ p->pixel = XGetPixel (ximg, x, y);
+
+ if (rgb_p)
+ x_query_colors (f, row, img->width);
+ }
+
+ XDestroyImage (ximg);
+ return colors;
+ }
+
+
+ /* Create IMG->pixmap from an array COLORS of XColor structures, whose
+ RGB members are set. F is the frame on which this all happens.
+ COLORS will be freed; an existing IMG->pixmap will be freed, too. */
+
+ static void
+ x_from_xcolors (f, img, colors)
+ struct frame *f;
+ struct image *img;
+ XColor *colors;
+ {
+ int x, y;
+ XImage *oimg;
+ Pixmap pixmap;
+ XColor *p;
+
+ init_color_table ();
+
+ x_create_x_image_and_pixmap (f, img->width, img->height, 0,
+ &oimg, &pixmap);
+ p = colors;
+ for (y = 0; y < img->height; ++y)
+ for (x = 0; x < img->width; ++x, ++p)
+ {
+ unsigned long pixel;
+ pixel = lookup_rgb_color (f, p->red, p->green, p->blue);
+ XPutPixel (oimg, x, y, pixel);
+ }
+
+ xfree (colors);
+ x_clear_image_1 (f, img, 1, 0, 1);
+
+ x_put_x_image (f, oimg, pixmap, img->width, img->height);
+ x_destroy_x_image (oimg);
+ img->pixmap = pixmap;
+ img->colors = colors_in_color_table (&img->ncolors);
+ free_color_table ();
+ }
+
+
+ /* On frame F, perform edge-detection on image IMG.
+
+ MATRIX is a nine-element array specifying the transformation
+ matrix. See emboss_matrix for an example.
+
+ COLOR_ADJUST is a color adjustment added to each pixel of the
+ outgoing image. */
+
+ static void
+ x_detect_edges (f, img, matrix, color_adjust)
+ struct frame *f;
+ struct image *img;
+ int matrix[9], color_adjust;
+ {
+ XColor *colors = x_to_xcolors (f, img, 1);
+ XColor *new, *p;
+ int x, y, i, sum;
+
+ for (i = sum = 0; i < 9; ++i)
+ sum += abs (matrix[i]);
+
+ #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X))
+
+ new = (XColor *) xmalloc (img->width * img->height * sizeof *new);
+
+ for (y = 0; y < img->height; ++y)
+ {
+ p = COLOR (new, 0, y);
+ p->red = p->green = p->blue = 0xffff/2;
+ p = COLOR (new, img->width - 1, y);
+ p->red = p->green = p->blue = 0xffff/2;
+ }
+
+ for (x = 1; x < img->width - 1; ++x)
+ {
+ p = COLOR (new, x, 0);
+ p->red = p->green = p->blue = 0xffff/2;
+ p = COLOR (new, x, img->height - 1);
+ p->red = p->green = p->blue = 0xffff/2;
+ }
+
+ for (y = 1; y < img->height - 1; ++y)
+ {
+ p = COLOR (new, 1, y);
+
+ for (x = 1; x < img->width - 1; ++x, ++p)
+ {
+ int r, g, b, y1, x1;
+
+ r = g = b = i = 0;
+ for (y1 = y - 1; y1 < y + 2; ++y1)
+ for (x1 = x - 1; x1 < x + 2; ++x1, ++i)
+ if (matrix[i])
+ {
+ XColor *t = COLOR (colors, x1, y1);
+ r += matrix[i] * t->red;
+ g += matrix[i] * t->green;
+ b += matrix[i] * t->blue;
+ }
+
+ r = (r / sum + color_adjust) & 0xffff;
+ g = (g / sum + color_adjust) & 0xffff;
+ b = (b / sum + color_adjust) & 0xffff;
+ p->red = p->green = p->blue = COLOR_INTENSITY (r, g, b);
+ }
+ }
+
+ xfree (colors);
+ x_from_xcolors (f, img, new);
+
+ #undef COLOR
+ }
+
+
+ /* Perform the pre-defined `emboss' edge-detection on image IMG
+ on frame F. */
+
+ static void
+ x_emboss (f, img)
+ struct frame *f;
+ struct image *img;
+ {
+ x_detect_edges (f, img, emboss_matrix, 0xffff / 2);
+ }
+
+
+ /* Perform the pre-defined `laplace' edge-detection on image IMG
+ on frame F. */
+
+ static void
+ x_laplace (f, img)
+ struct frame *f;
+ struct image *img;
+ {
+ x_detect_edges (f, img, laplace_matrix, 45000);
+ }
+
+
+ /* Perform edge-detection on image IMG on frame F, with specified
+ transformation matrix MATRIX and color-adjustment COLOR_ADJUST.
+
+ MATRIX must be either
+
+ - a list of at least 9 numbers in row-major form
+ - a vector of at least 9 numbers
+
+ COLOR_ADJUST nil means use a default; otherwise it must be a
+ number. */
+
+ static void
+ x_edge_detection (f, img, matrix, color_adjust)
+ struct frame *f;
+ struct image *img;
+ Lisp_Object matrix, color_adjust;
+ {
+ int i = 0;
+ int trans[9];
+
+ if (CONSP (matrix))
+ {
+ for (i = 0;
+ i < 9 && CONSP (matrix) && NUMBERP (XCAR (matrix));
+ ++i, matrix = XCDR (matrix))
+ trans[i] = XFLOATINT (XCAR (matrix));
+ }
+ else if (VECTORP (matrix) && ASIZE (matrix) >= 9)
+ {
+ for (i = 0; i < 9 && NUMBERP (AREF (matrix, i)); ++i)
+ trans[i] = XFLOATINT (AREF (matrix, i));
+ }
+
+ if (NILP (color_adjust))
+ color_adjust = make_number (0xffff / 2);
+
+ if (i == 9 && NUMBERP (color_adjust))
+ x_detect_edges (f, img, trans, (int) XFLOATINT (color_adjust));
+ }
+
+
+ /* Transform image IMG on frame F so that it looks disabled. */
+
+ static void
+ x_disable_image (f, img)
+ struct frame *f;
+ struct image *img;
+ {
+ struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+
+ if (dpyinfo->n_planes >= 2)
+ {
+ /* Color (or grayscale). Convert to gray, and equalize. Just
+ drawing such images with a stipple can look very odd, so
+ we're using this method instead. */
+ XColor *colors = x_to_xcolors (f, img, 1);
+ XColor *p, *end;
+ const int h = 15000;
+ const int l = 30000;
+
+ for (p = colors, end = colors + img->width * img->height;
+ p < end;
+ ++p)
+ {
+ int i = COLOR_INTENSITY (p->red, p->green, p->blue);
+ int i2 = (0xffff - h - l) * i / 0xffff + l;
+ p->red = p->green = p->blue = i2;
+ }
+
+ x_from_xcolors (f, img, colors);
+ }
+
+ /* Draw a cross over the disabled image, if we must or if we
+ should. */
+ if (dpyinfo->n_planes < 2 || cross_disabled_images)
+ {
+ Display *dpy = FRAME_X_DISPLAY (f);
+ GC gc;
+
+ gc = XCreateGC (dpy, img->pixmap, 0, NULL);
+ XSetForeground (dpy, gc, BLACK_PIX_DEFAULT (f));
+ XDrawLine (dpy, img->pixmap, gc, 0, 0,
+ img->width - 1, img->height - 1);
+ XDrawLine (dpy, img->pixmap, gc, 0, img->height - 1,
+ img->width - 1, 0);
+ XFreeGC (dpy, gc);
+
+ if (img->mask)
+ {
+ gc = XCreateGC (dpy, img->mask, 0, NULL);
+ XSetForeground (dpy, gc, WHITE_PIX_DEFAULT (f));
+ XDrawLine (dpy, img->mask, gc, 0, 0,
+ img->width - 1, img->height - 1);
+ XDrawLine (dpy, img->mask, gc, 0, img->height - 1,
+ img->width - 1, 0);
+ XFreeGC (dpy, gc);
+ }
+ }
+ }
+
+
+ /* Build a mask for image IMG which is used on frame F. FILE is the
+ name of an image file, for error messages. HOW determines how to
+ determine the background color of IMG. If it is a list '(R G B)',
+ with R, G, and B being integers >= 0, take that as the color of the
+ background. Otherwise, determine the background color of IMG
+ heuristically. Value is non-zero if successful. */
+
+ static int
+ x_build_heuristic_mask (f, img, how)
+ struct frame *f;
+ struct image *img;
+ Lisp_Object how;
+ {
+ Display *dpy = FRAME_X_DISPLAY (f);
+ XImage *ximg, *mask_img;
+ int x, y, rc, use_img_background;
+ unsigned long bg = 0;
+
+ if (img->mask)
+ {
+ XFreePixmap (FRAME_X_DISPLAY (f), img->mask);
+ img->mask = None;
+ img->background_transparent_valid = 0;
+ }
+
+ /* Create an image and pixmap serving as mask. */
+ rc = x_create_x_image_and_pixmap (f, img->width, img->height, 1,
+ &mask_img, &img->mask);
+ if (!rc)
+ return 0;
+
+ /* Get the X image of IMG->pixmap. */
+ ximg = XGetImage (dpy, img->pixmap, 0, 0, img->width, img->height,
+ ~0, ZPixmap);
+
+ /* Determine the background color of ximg. If HOW is `(R G B)'
+ take that as color. Otherwise, use the image's background color. */
+ use_img_background = 1;
+
+ if (CONSP (how))
+ {
+ int rgb[3], i;
+
+ for (i = 0; i < 3 && CONSP (how) && NATNUMP (XCAR (how)); ++i)
+ {
+ rgb[i] = XFASTINT (XCAR (how)) & 0xffff;
+ how = XCDR (how);
+ }
+
+ if (i == 3 && NILP (how))
+ {
+ char color_name[30];
+ sprintf (color_name, "#%04x%04x%04x", rgb[0], rgb[1], rgb[2]);
+ bg = x_alloc_image_color (f, img, build_string (color_name), 0);
+ use_img_background = 0;
+ }
+ }
+
+ if (use_img_background)
+ bg = four_corners_best (ximg, img->width, img->height);
+
+ /* Set all bits in mask_img to 1 whose color in ximg is different
+ from the background color bg. */
+ for (y = 0; y < img->height; ++y)
+ for (x = 0; x < img->width; ++x)
+ XPutPixel (mask_img, x, y, XGetPixel (ximg, x, y) != bg);
+
+ /* Fill in the background_transparent field while we have the mask handy. */
+ image_background_transparent (img, f, mask_img);
+
+ /* Put mask_img into img->mask. */
+ x_put_x_image (f, mask_img, img->mask, img->width, img->height);
+ x_destroy_x_image (mask_img);
+ XDestroyImage (ximg);
+
+ return 1;
+ }
+
+
+
+ /***********************************************************************
+ PBM (mono, gray, color)
+ ***********************************************************************/
+
+ static int pbm_image_p P_ ((Lisp_Object object));
+ static int pbm_load P_ ((struct frame *f, struct image *img));
+ static int pbm_scan_number P_ ((unsigned char **, unsigned char *));
+
+ /* The symbol `pbm' identifying images of this type. */
+
+ Lisp_Object Qpbm;
+
+ /* Indices of image specification fields in gs_format, below. */
+
+ enum pbm_keyword_index
+ {
+ PBM_TYPE,
+ PBM_FILE,
+ PBM_DATA,
+ PBM_ASCENT,
+ PBM_MARGIN,
+ PBM_RELIEF,
+ PBM_ALGORITHM,
+ PBM_HEURISTIC_MASK,
+ PBM_MASK,
+ PBM_FOREGROUND,
+ PBM_BACKGROUND,
+ PBM_LAST
+ };
+
+ /* Vector of image_keyword structures describing the format
+ of valid user-defined image specifications. */
+
+ static struct image_keyword pbm_format[PBM_LAST] =
+ {
+ {":type", IMAGE_SYMBOL_VALUE, 1},
+ {":file", IMAGE_STRING_VALUE, 0},
+ {":data", IMAGE_STRING_VALUE, 0},
+ {":ascent", IMAGE_ASCENT_VALUE, 0},
+ {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0},
+ {":relief", IMAGE_INTEGER_VALUE, 0},
+ {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0},
+ {":background", IMAGE_STRING_OR_NIL_VALUE, 0}
+ };
+
+ /* Structure describing the image type `pbm'. */
+
+ static struct image_type pbm_type =
+ {
+ &Qpbm,
+ pbm_image_p,
+ pbm_load,
+ x_clear_image,
+ NULL
+ };
+
+
+ /* Return non-zero if OBJECT is a valid PBM image specification. */
+
+ static int
+ pbm_image_p (object)
+ Lisp_Object object;
+ {
+ struct image_keyword fmt[PBM_LAST];
+
+ bcopy (pbm_format, fmt, sizeof fmt);
+
+ if (!parse_image_spec (object, fmt, PBM_LAST, Qpbm))
+ return 0;
+
+ /* Must specify either :data or :file. */
+ return fmt[PBM_DATA].count + fmt[PBM_FILE].count == 1;
+ }
+
+
+ /* Scan a decimal number from *S and return it. Advance *S while
+ reading the number. END is the end of the string. Value is -1 at
+ end of input. */
+
+ static int
+ pbm_scan_number (s, end)
+ unsigned char **s, *end;
+ {
+ int c = 0, val = -1;
+
+ while (*s < end)
+ {
+ /* Skip white-space. */
+ while (*s < end && (c = *(*s)++, isspace (c)))
+ ;
+
+ if (c == '#')
+ {
+ /* Skip comment to end of line. */
+ while (*s < end && (c = *(*s)++, c != '\n'))
+ ;
+ }
+ else if (isdigit (c))
+ {
+ /* Read decimal number. */
+ val = c - '0';
+ while (*s < end && (c = *(*s)++, isdigit (c)))
+ val = 10 * val + c - '0';
+ break;
+ }
+ else
+ break;
+ }
+
+ return val;
+ }
+
+
+ /* Load PBM image IMG for use on frame F. */
+
+ static int
+ pbm_load (f, img)
+ struct frame *f;
+ struct image *img;
+ {
+ int raw_p, x, y;
+ int width, height, max_color_idx = 0;
+ XImage *ximg;
+ Lisp_Object file, specified_file;
+ enum {PBM_MONO, PBM_GRAY, PBM_COLOR} type;
+ struct gcpro gcpro1;
+ unsigned char *contents = NULL;
+ unsigned char *end, *p;
+ int size;
+
+ specified_file = image_spec_value (img->spec, QCfile, NULL);
+ file = Qnil;
+ GCPRO1 (file);
+
+ if (STRINGP (specified_file))
+ {
+ file = x_find_image_file (specified_file);
+ if (!STRINGP (file))
+ {
+ image_error ("Cannot find image file `%s'", specified_file, Qnil);
+ UNGCPRO;
+ return 0;
+ }
+
+ contents = slurp_file (SDATA (file), &size);
+ if (contents == NULL)
+ {
+ image_error ("Error reading `%s'", file, Qnil);
+ UNGCPRO;
+ return 0;
+ }
+
+ p = contents;
+ end = contents + size;
+ }
+ else
+ {
+ Lisp_Object data;
+ data = image_spec_value (img->spec, QCdata, NULL);
+ p = SDATA (data);
+ end = p + SBYTES (data);
+ }
+
+ /* Check magic number. */
+ if (end - p < 2 || *p++ != 'P')
+ {
+ image_error ("Not a PBM image: `%s'", img->spec, Qnil);
+ error:
+ xfree (contents);
+ UNGCPRO;
+ return 0;
+ }
+
+ switch (*p++)
+ {
+ case '1':
+ raw_p = 0, type = PBM_MONO;
+ break;
+
+ case '2':
+ raw_p = 0, type = PBM_GRAY;
+ break;
+
+ case '3':
+ raw_p = 0, type = PBM_COLOR;
+ break;
+
+ case '4':
+ raw_p = 1, type = PBM_MONO;
+ break;
+
+ case '5':
+ raw_p = 1, type = PBM_GRAY;
+ break;
+
+ case '6':
+ raw_p = 1, type = PBM_COLOR;
+ break;
+
+ default:
+ image_error ("Not a PBM image: `%s'", img->spec, Qnil);
+ goto error;
+ }
+
+ /* Read width, height, maximum color-component. Characters
+ starting with `#' up to the end of a line are ignored. */
+ width = pbm_scan_number (&p, end);
+ height = pbm_scan_number (&p, end);
+
+ if (type != PBM_MONO)
+ {
+ max_color_idx = pbm_scan_number (&p, end);
+ if (raw_p && max_color_idx > 255)
+ max_color_idx = 255;
+ }
+
+ if (width < 0
+ || height < 0
+ || (type != PBM_MONO && max_color_idx < 0))
+ goto error;
+
+ if (!x_create_x_image_and_pixmap (f, width, height, 0,
+ &ximg, &img->pixmap))
+ goto error;
+
+ /* Initialize the color hash table. */
+ init_color_table ();
+
+ if (type == PBM_MONO)
+ {
+ int c = 0, g;
+ struct image_keyword fmt[PBM_LAST];
+ unsigned long fg = FRAME_FOREGROUND_PIXEL (f);
+ unsigned long bg = FRAME_BACKGROUND_PIXEL (f);
+
+ /* Parse the image specification. */
+ bcopy (pbm_format, fmt, sizeof fmt);
+ parse_image_spec (img->spec, fmt, PBM_LAST, Qpbm);
+
+ /* Get foreground and background colors, maybe allocate colors. */
+ if (fmt[PBM_FOREGROUND].count
+ && STRINGP (fmt[PBM_FOREGROUND].value))
+ fg = x_alloc_image_color (f, img, fmt[PBM_FOREGROUND].value, fg);
+ if (fmt[PBM_BACKGROUND].count
+ && STRINGP (fmt[PBM_BACKGROUND].value))
+ {
+ bg = x_alloc_image_color (f, img, fmt[PBM_BACKGROUND].value, bg);
+ img->background = bg;
+ img->background_valid = 1;
+ }
+
+ for (y = 0; y < height; ++y)
+ for (x = 0; x < width; ++x)
+ {
+ if (raw_p)
+ {
+ if ((x & 7) == 0)
+ c = *p++;
+ g = c & 0x80;
+ c <<= 1;
+ }
+ else
+ g = pbm_scan_number (&p, end);
+
+ XPutPixel (ximg, x, y, g ? fg : bg);
+ }
+ }
+ else
+ {
+ for (y = 0; y < height; ++y)
+ for (x = 0; x < width; ++x)
+ {
+ int r, g, b;
+
+ if (type == PBM_GRAY)
+ r = g = b = raw_p ? *p++ : pbm_scan_number (&p, end);
+ else if (raw_p)
+ {
+ r = *p++;
+ g = *p++;
+ b = *p++;
+ }
+ else
+ {
+ r = pbm_scan_number (&p, end);
+ g = pbm_scan_number (&p, end);
+ b = pbm_scan_number (&p, end);
+ }
+
+ if (r < 0 || g < 0 || b < 0)
+ {
+ xfree (ximg->data);
+ ximg->data = NULL;
+ XDestroyImage (ximg);
+ image_error ("Invalid pixel value in image `%s'",
+ img->spec, Qnil);
+ goto error;
+ }
+
+ /* RGB values are now in the range 0..max_color_idx.
+ Scale this to the range 0..0xffff supported by X. */
+ r = (double) r * 65535 / max_color_idx;
+ g = (double) g * 65535 / max_color_idx;
+ b = (double) b * 65535 / max_color_idx;
+ XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b));
+ }
+ }
+
+ /* Store in IMG->colors the colors allocated for the image, and
+ free the color table. */
+ img->colors = colors_in_color_table (&img->ncolors);
+ free_color_table ();
+
+ /* Maybe fill in the background field while we have ximg handy. */
+ if (NILP (image_spec_value (img->spec, QCbackground, NULL)))
+ IMAGE_BACKGROUND (img, f, ximg);
+
+ /* Put the image into a pixmap. */
+ x_put_x_image (f, ximg, img->pixmap, width, height);
+ x_destroy_x_image (ximg);
+
+ img->width = width;
+ img->height = height;
+
+ UNGCPRO;
+ xfree (contents);
+ return 1;
+ }
+
+
+
+ /***********************************************************************
+ PNG
+ ***********************************************************************/
+
+ #if HAVE_PNG
+
+ #include <png.h>
+
+ /* Function prototypes. */
+
+ static int png_image_p P_ ((Lisp_Object object));
+ static int png_load P_ ((struct frame *f, struct image *img));
+
+ /* The symbol `png' identifying images of this type. */
+
+ Lisp_Object Qpng;
+
+ /* Indices of image specification fields in png_format, below. */
+
+ enum png_keyword_index
+ {
+ PNG_TYPE,
+ PNG_DATA,
+ PNG_FILE,
+ PNG_ASCENT,
+ PNG_MARGIN,
+ PNG_RELIEF,
+ PNG_ALGORITHM,
+ PNG_HEURISTIC_MASK,
+ PNG_MASK,
+ PNG_BACKGROUND,
+ PNG_LAST
+ };
+
+ /* Vector of image_keyword structures describing the format
+ of valid user-defined image specifications. */
+
+ static struct image_keyword png_format[PNG_LAST] =
+ {
+ {":type", IMAGE_SYMBOL_VALUE, 1},
+ {":data", IMAGE_STRING_VALUE, 0},
+ {":file", IMAGE_STRING_VALUE, 0},
+ {":ascent", IMAGE_ASCENT_VALUE, 0},
+ {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0},
+ {":relief", IMAGE_INTEGER_VALUE, 0},
+ {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":background", IMAGE_STRING_OR_NIL_VALUE, 0}
+ };
+
+ /* Structure describing the image type `png'. */
+
+ static struct image_type png_type =
+ {
+ &Qpng,
+ png_image_p,
+ png_load,
+ x_clear_image,
+ NULL
+ };
+
+
+ /* Return non-zero if OBJECT is a valid PNG image specification. */
+
+ static int
+ png_image_p (object)
+ Lisp_Object object;
+ {
+ struct image_keyword fmt[PNG_LAST];
+ bcopy (png_format, fmt, sizeof fmt);
+
+ if (!parse_image_spec (object, fmt, PNG_LAST, Qpng))
+ return 0;
+
+ /* Must specify either the :data or :file keyword. */
+ return fmt[PNG_FILE].count + fmt[PNG_DATA].count == 1;
+ }
+
+
+ /* Error and warning handlers installed when the PNG library
+ is initialized. */
+
+ static void
+ my_png_error (png_ptr, msg)
+ png_struct *png_ptr;
+ char *msg;
+ {
+ xassert (png_ptr != NULL);
+ image_error ("PNG error: %s", build_string (msg), Qnil);
+ longjmp (png_ptr->jmpbuf, 1);
+ }
+
+
+ static void
+ my_png_warning (png_ptr, msg)
+ png_struct *png_ptr;
+ char *msg;
+ {
+ xassert (png_ptr != NULL);
+ image_error ("PNG warning: %s", build_string (msg), Qnil);
+ }
+
+ /* Memory source for PNG decoding. */
+
+ struct png_memory_storage
+ {
+ unsigned char *bytes; /* The data */
+ size_t len; /* How big is it? */
+ int index; /* Where are we? */
+ };
+
+
+ /* Function set as reader function when reading PNG image from memory.
+ PNG_PTR is a pointer to the PNG control structure. Copy LENGTH
+ bytes from the input to DATA. */
+
+ static void
+ png_read_from_memory (png_ptr, data, length)
+ png_structp png_ptr;
+ png_bytep data;
+ png_size_t length;
+ {
+ struct png_memory_storage *tbr
+ = (struct png_memory_storage *) png_get_io_ptr (png_ptr);
+
+ if (length > tbr->len - tbr->index)
+ png_error (png_ptr, "Read error");
+
+ bcopy (tbr->bytes + tbr->index, data, length);
+ tbr->index = tbr->index + length;
+ }
+
+ /* Load PNG image IMG for use on frame F. Value is non-zero if
+ successful. */
+
+ static int
+ png_load (f, img)
+ struct frame *f;
+ struct image *img;
+ {
+ Lisp_Object file, specified_file;
+ Lisp_Object specified_data;
+ int x, y, i;
+ XImage *ximg, *mask_img = NULL;
+ struct gcpro gcpro1;
+ png_struct *png_ptr = NULL;
+ png_info *info_ptr = NULL, *end_info = NULL;
+ FILE *volatile fp = NULL;
+ png_byte sig[8];
+ png_byte * volatile pixels = NULL;
+ png_byte ** volatile rows = NULL;
+ png_uint_32 width, height;
+ int bit_depth, color_type, interlace_type;
+ png_byte channels;
+ png_uint_32 row_bytes;
+ int transparent_p;
+ double screen_gamma;
+ struct png_memory_storage tbr; /* Data to be read */
+
+ /* Find out what file to load. */
+ specified_file = image_spec_value (img->spec, QCfile, NULL);
+ specified_data = image_spec_value (img->spec, QCdata, NULL);
+ file = Qnil;
+ GCPRO1 (file);
+
+ if (NILP (specified_data))
+ {
+ file = x_find_image_file (specified_file);
+ if (!STRINGP (file))
+ {
+ image_error ("Cannot find image file `%s'", specified_file, Qnil);
+ UNGCPRO;
+ return 0;
+ }
+
+ /* Open the image file. */
+ fp = fopen (SDATA (file), "rb");
+ if (!fp)
+ {
+ image_error ("Cannot open image file `%s'", file, Qnil);
+ UNGCPRO;
+ fclose (fp);
+ return 0;
+ }
+
+ /* Check PNG signature. */
+ if (fread (sig, 1, sizeof sig, fp) != sizeof sig
+ || !png_check_sig (sig, sizeof sig))
+ {
+ image_error ("Not a PNG file: `%s'", file, Qnil);
+ UNGCPRO;
+ fclose (fp);
+ return 0;
+ }
+ }
+ else
+ {
+ /* Read from memory. */
+ tbr.bytes = SDATA (specified_data);
+ tbr.len = SBYTES (specified_data);
+ tbr.index = 0;
+
+ /* Check PNG signature. */
+ if (tbr.len < sizeof sig
+ || !png_check_sig (tbr.bytes, sizeof sig))
+ {
+ image_error ("Not a PNG image: `%s'", img->spec, Qnil);
+ UNGCPRO;
+ return 0;
+ }
+
+ /* Need to skip past the signature. */
+ tbr.bytes += sizeof (sig);
+ }
+
+ /* Initialize read and info structs for PNG lib. */
+ png_ptr = png_create_read_struct (PNG_LIBPNG_VER_STRING, NULL,
+ my_png_error, my_png_warning);
+ if (!png_ptr)
+ {
+ if (fp) fclose (fp);
+ UNGCPRO;
+ return 0;
+ }
+
+ info_ptr = png_create_info_struct (png_ptr);
+ if (!info_ptr)
+ {
+ png_destroy_read_struct (&png_ptr, NULL, NULL);
+ if (fp) fclose (fp);
+ UNGCPRO;
+ return 0;
+ }
+
+ end_info = png_create_info_struct (png_ptr);
+ if (!end_info)
+ {
+ png_destroy_read_struct (&png_ptr, &info_ptr, NULL);
+ if (fp) fclose (fp);
+ UNGCPRO;
+ return 0;
+ }
+
+ /* Set error jump-back. We come back here when the PNG library
+ detects an error. */
+ if (setjmp (png_ptr->jmpbuf))
+ {
+ error:
+ if (png_ptr)
+ png_destroy_read_struct (&png_ptr, &info_ptr, &end_info);
+ xfree (pixels);
+ xfree (rows);
+ if (fp) fclose (fp);
+ UNGCPRO;
+ return 0;
+ }
+
+ /* Read image info. */
+ if (!NILP (specified_data))
+ png_set_read_fn (png_ptr, (void *) &tbr, png_read_from_memory);
+ else
+ png_init_io (png_ptr, fp);
+
+ png_set_sig_bytes (png_ptr, sizeof sig);
+ png_read_info (png_ptr, info_ptr);
+ png_get_IHDR (png_ptr, info_ptr, &width, &height, &bit_depth, &color_type,
+ &interlace_type, NULL, NULL);
+
+ /* If image contains simply transparency data, we prefer to
+ construct a clipping mask. */
+ if (png_get_valid (png_ptr, info_ptr, PNG_INFO_tRNS))
+ transparent_p = 1;
+ else
+ transparent_p = 0;
+
+ /* This function is easier to write if we only have to handle
+ one data format: RGB or RGBA with 8 bits per channel. Let's
+ transform other formats into that format. */
+
+ /* Strip more than 8 bits per channel. */
+ if (bit_depth == 16)
+ png_set_strip_16 (png_ptr);
+
+ /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel
+ if available. */
+ png_set_expand (png_ptr);
+
+ /* Convert grayscale images to RGB. */
+ if (color_type == PNG_COLOR_TYPE_GRAY
+ || color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
+ png_set_gray_to_rgb (png_ptr);
+
+ screen_gamma = (f->gamma ? 1 / f->gamma / 0.45455 : 2.2);
+
+ #if 0 /* Avoid double gamma correction for PNG images. */
+ { /* Tell the PNG lib to handle gamma correction for us. */
+ int intent;
+ double image_gamma;
+ #if defined(PNG_READ_sRGB_SUPPORTED) || defined(PNG_WRITE_sRGB_SUPPORTED)
+ if (png_get_sRGB (png_ptr, info_ptr, &intent))
+ /* The libpng documentation says this is right in this case. */
+ png_set_gamma (png_ptr, screen_gamma, 0.45455);
+ else
+ #endif
+ if (png_get_gAMA (png_ptr, info_ptr, &image_gamma))
+ /* Image contains gamma information. */
+ png_set_gamma (png_ptr, screen_gamma, image_gamma);
+ else
+ /* Use the standard default for the image gamma. */
+ png_set_gamma (png_ptr, screen_gamma, 0.45455);
+ }
+ #endif /* if 0 */
+
+ /* Handle alpha channel by combining the image with a background
+ color. Do this only if a real alpha channel is supplied. For
+ simple transparency, we prefer a clipping mask. */
+ if (!transparent_p)
+ {
+ png_color_16 *image_bg;
+ Lisp_Object specified_bg
+ = image_spec_value (img->spec, QCbackground, NULL);
+
+ if (STRINGP (specified_bg))
+ /* The user specified `:background', use that. */
+ {
+ XColor color;
+ if (x_defined_color (f, SDATA (specified_bg), &color, 0))
+ {
+ png_color_16 user_bg;
+
+ bzero (&user_bg, sizeof user_bg);
+ user_bg.red = color.red;
+ user_bg.green = color.green;
+ user_bg.blue = color.blue;
+
+ png_set_background (png_ptr, &user_bg,
+ PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
+ }
+ }
+ else if (png_get_bKGD (png_ptr, info_ptr, &image_bg))
+ /* Image contains a background color with which to
+ combine the image. */
+ png_set_background (png_ptr, image_bg,
+ PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
+ else
+ {
+ /* Image does not contain a background color with which
+ to combine the image data via an alpha channel. Use
+ the frame's background instead. */
+ XColor color;
+ Colormap cmap;
+ png_color_16 frame_background;
+
+ cmap = FRAME_X_COLORMAP (f);
+ color.pixel = FRAME_BACKGROUND_PIXEL (f);
+ x_query_color (f, &color);
+
+ bzero (&frame_background, sizeof frame_background);
+ frame_background.red = color.red;
+ frame_background.green = color.green;
+ frame_background.blue = color.blue;
+
+ png_set_background (png_ptr, &frame_background,
+ PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
+ }
+ }
+
+ /* Update info structure. */
+ png_read_update_info (png_ptr, info_ptr);
+
+ /* Get number of channels. Valid values are 1 for grayscale images
+ and images with a palette, 2 for grayscale images with transparency
+ information (alpha channel), 3 for RGB images, and 4 for RGB
+ images with alpha channel, i.e. RGBA. If conversions above were
+ sufficient we should only have 3 or 4 channels here. */
+ channels = png_get_channels (png_ptr, info_ptr);
+ xassert (channels == 3 || channels == 4);
+
+ /* Number of bytes needed for one row of the image. */
+ row_bytes = png_get_rowbytes (png_ptr, info_ptr);
+
+ /* Allocate memory for the image. */
+ pixels = (png_byte *) xmalloc (row_bytes * height * sizeof *pixels);
+ rows = (png_byte **) xmalloc (height * sizeof *rows);
+ for (i = 0; i < height; ++i)
+ rows[i] = pixels + i * row_bytes;
+
+ /* Read the entire image. */
+ png_read_image (png_ptr, rows);
+ png_read_end (png_ptr, info_ptr);
+ if (fp)
+ {
+ fclose (fp);
+ fp = NULL;
+ }
+
+ /* Create the X image and pixmap. */
+ if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg,
+ &img->pixmap))
+ goto error;
+
+ /* Create an image and pixmap serving as mask if the PNG image
+ contains an alpha channel. */
+ if (channels == 4
+ && !transparent_p
+ && !x_create_x_image_and_pixmap (f, width, height, 1,
+ &mask_img, &img->mask))
+ {
+ x_destroy_x_image (ximg);
+ XFreePixmap (FRAME_X_DISPLAY (f), img->pixmap);
+ img->pixmap = None;
+ goto error;
+ }
+
+ /* Fill the X image and mask from PNG data. */
+ init_color_table ();
+
+ for (y = 0; y < height; ++y)
+ {
+ png_byte *p = rows[y];
+
+ for (x = 0; x < width; ++x)
+ {
+ unsigned r, g, b;
+
+ r = *p++ << 8;
+ g = *p++ << 8;
+ b = *p++ << 8;
+ XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b));
+
+ /* An alpha channel, aka mask channel, associates variable
+ transparency with an image. Where other image formats
+ support binary transparency---fully transparent or fully
+ opaque---PNG allows up to 254 levels of partial transparency.
+ The PNG library implements partial transparency by combining
+ the image with a specified background color.
+
+ I'm not sure how to handle this here nicely: because the
+ background on which the image is displayed may change, for
+ real alpha channel support, it would be necessary to create
+ a new image for each possible background.
+
+ What I'm doing now is that a mask is created if we have
+ boolean transparency information. Otherwise I'm using
+ the frame's background color to combine the image with. */
+
+ if (channels == 4)
+ {
+ if (mask_img)
+ XPutPixel (mask_img, x, y, *p > 0);
+ ++p;
+ }
+ }
+ }
+
+ if (NILP (image_spec_value (img->spec, QCbackground, NULL)))
+ /* Set IMG's background color from the PNG image, unless the user
+ overrode it. */
+ {
+ png_color_16 *bg;
+ if (png_get_bKGD (png_ptr, info_ptr, &bg))
+ {
+ img->background = lookup_rgb_color (f, bg->red, bg->green, bg->blue);
+ img->background_valid = 1;
+ }
+ }
+
+ /* Remember colors allocated for this image. */
+ img->colors = colors_in_color_table (&img->ncolors);
+ free_color_table ();
+
+ /* Clean up. */
+ png_destroy_read_struct (&png_ptr, &info_ptr, &end_info);
+ xfree (rows);
+ xfree (pixels);
+
+ img->width = width;
+ img->height = height;
+
+ /* Maybe fill in the background field while we have ximg handy. */
+ IMAGE_BACKGROUND (img, f, ximg);
+
+ /* Put the image into the pixmap, then free the X image and its buffer. */
+ x_put_x_image (f, ximg, img->pixmap, width, height);
+ x_destroy_x_image (ximg);
+
+ /* Same for the mask. */
+ if (mask_img)
+ {
+ /* Fill in the background_transparent field while we have the mask
+ handy. */
+ image_background_transparent (img, f, mask_img);
+
+ x_put_x_image (f, mask_img, img->mask, img->width, img->height);
+ x_destroy_x_image (mask_img);
+ }
+
+ UNGCPRO;
+ return 1;
+ }
+
+ #endif /* HAVE_PNG != 0 */
+
+
+
+ /***********************************************************************
+ JPEG
+ ***********************************************************************/
+
+ #if HAVE_JPEG
+
+ /* Work around a warning about HAVE_STDLIB_H being redefined in
+ jconfig.h. */
+ #ifdef HAVE_STDLIB_H
+ #define HAVE_STDLIB_H_1
+ #undef HAVE_STDLIB_H
+ #endif /* HAVE_STLIB_H */
+
+ #include <jpeglib.h>
+ #include <jerror.h>
+ #include <setjmp.h>
+
+ #ifdef HAVE_STLIB_H_1
+ #define HAVE_STDLIB_H 1
+ #endif
+
+ static int jpeg_image_p P_ ((Lisp_Object object));
+ static int jpeg_load P_ ((struct frame *f, struct image *img));
+
+ /* The symbol `jpeg' identifying images of this type. */
+
+ Lisp_Object Qjpeg;
+
+ /* Indices of image specification fields in gs_format, below. */
+
+ enum jpeg_keyword_index
+ {
+ JPEG_TYPE,
+ JPEG_DATA,
+ JPEG_FILE,
+ JPEG_ASCENT,
+ JPEG_MARGIN,
+ JPEG_RELIEF,
+ JPEG_ALGORITHM,
+ JPEG_HEURISTIC_MASK,
+ JPEG_MASK,
+ JPEG_BACKGROUND,
+ JPEG_LAST
+ };
+
+ /* Vector of image_keyword structures describing the format
+ of valid user-defined image specifications. */
+
+ static struct image_keyword jpeg_format[JPEG_LAST] =
+ {
+ {":type", IMAGE_SYMBOL_VALUE, 1},
+ {":data", IMAGE_STRING_VALUE, 0},
+ {":file", IMAGE_STRING_VALUE, 0},
+ {":ascent", IMAGE_ASCENT_VALUE, 0},
+ {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0},
+ {":relief", IMAGE_INTEGER_VALUE, 0},
+ {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":background", IMAGE_STRING_OR_NIL_VALUE, 0}
+ };
+
+ /* Structure describing the image type `jpeg'. */
+
+ static struct image_type jpeg_type =
+ {
+ &Qjpeg,
+ jpeg_image_p,
+ jpeg_load,
+ x_clear_image,
+ NULL
+ };
+
+
+ /* Return non-zero if OBJECT is a valid JPEG image specification. */
+
+ static int
+ jpeg_image_p (object)
+ Lisp_Object object;
+ {
+ struct image_keyword fmt[JPEG_LAST];
+
+ bcopy (jpeg_format, fmt, sizeof fmt);
+
+ if (!parse_image_spec (object, fmt, JPEG_LAST, Qjpeg))
+ return 0;
+
+ /* Must specify either the :data or :file keyword. */
+ return fmt[JPEG_FILE].count + fmt[JPEG_DATA].count == 1;
+ }
+
+
+ struct my_jpeg_error_mgr
+ {
+ struct jpeg_error_mgr pub;
+ jmp_buf setjmp_buffer;
+ };
+
+
+ static void
+ my_error_exit (cinfo)
+ j_common_ptr cinfo;
+ {
+ struct my_jpeg_error_mgr *mgr = (struct my_jpeg_error_mgr *) cinfo->err;
+ longjmp (mgr->setjmp_buffer, 1);
+ }
+
+
+ /* Init source method for JPEG data source manager. Called by
+ jpeg_read_header() before any data is actually read. See
+ libjpeg.doc from the JPEG lib distribution. */
+
+ static void
+ our_init_source (cinfo)
+ j_decompress_ptr cinfo;
+ {
+ }
+
+
+ /* Fill input buffer method for JPEG data source manager. Called
+ whenever more data is needed. We read the whole image in one step,
+ so this only adds a fake end of input marker at the end. */
+
+ static boolean
+ our_fill_input_buffer (cinfo)
+ j_decompress_ptr cinfo;
+ {
+ /* Insert a fake EOI marker. */
+ struct jpeg_source_mgr *src = cinfo->src;
+ static JOCTET buffer[2];
+
+ buffer[0] = (JOCTET) 0xFF;
+ buffer[1] = (JOCTET) JPEG_EOI;
+
+ src->next_input_byte = buffer;
+ src->bytes_in_buffer = 2;
+ return TRUE;
+ }
+
+
+ /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src
+ is the JPEG data source manager. */
+
+ static void
+ our_skip_input_data (cinfo, num_bytes)
+ j_decompress_ptr cinfo;
+ long num_bytes;
+ {
+ struct jpeg_source_mgr *src = (struct jpeg_source_mgr *) cinfo->src;
+
+ if (src)
+ {
+ if (num_bytes > src->bytes_in_buffer)
+ ERREXIT (cinfo, JERR_INPUT_EOF);
+
+ src->bytes_in_buffer -= num_bytes;
+ src->next_input_byte += num_bytes;
+ }
+ }
+
+
+ /* Method to terminate data source. Called by
+ jpeg_finish_decompress() after all data has been processed. */
+
+ static void
+ our_term_source (cinfo)
+ j_decompress_ptr cinfo;
+ {
+ }
+
+
+ /* Set up the JPEG lib for reading an image from DATA which contains
+ LEN bytes. CINFO is the decompression info structure created for
+ reading the image. */
+
+ static void
+ jpeg_memory_src (cinfo, data, len)
+ j_decompress_ptr cinfo;
+ JOCTET *data;
+ unsigned int len;
+ {
+ struct jpeg_source_mgr *src;
+
+ if (cinfo->src == NULL)
+ {
+ /* First time for this JPEG object? */
+ cinfo->src = (struct jpeg_source_mgr *)
+ (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
+ sizeof (struct jpeg_source_mgr));
+ src = (struct jpeg_source_mgr *) cinfo->src;
+ src->next_input_byte = data;
+ }
+
+ src = (struct jpeg_source_mgr *) cinfo->src;
+ src->init_source = our_init_source;
+ src->fill_input_buffer = our_fill_input_buffer;
+ src->skip_input_data = our_skip_input_data;
+ src->resync_to_restart = jpeg_resync_to_restart; /* Use default method. */
+ src->term_source = our_term_source;
+ src->bytes_in_buffer = len;
+ src->next_input_byte = data;
+ }
+
+
+ /* Load image IMG for use on frame F. Patterned after example.c
+ from the JPEG lib. */
+
+ static int
+ jpeg_load (f, img)
+ struct frame *f;
+ struct image *img;
+ {
+ struct jpeg_decompress_struct cinfo;
+ struct my_jpeg_error_mgr mgr;
+ Lisp_Object file, specified_file;
+ Lisp_Object specified_data;
+ FILE * volatile fp = NULL;
+ JSAMPARRAY buffer;
+ int row_stride, x, y;
+ XImage *ximg = NULL;
+ int rc;
+ unsigned long *colors;
+ int width, height;
+ struct gcpro gcpro1;
+
+ /* Open the JPEG file. */
+ specified_file = image_spec_value (img->spec, QCfile, NULL);
+ specified_data = image_spec_value (img->spec, QCdata, NULL);
+ file = Qnil;
+ GCPRO1 (file);
+
+ if (NILP (specified_data))
+ {
+ file = x_find_image_file (specified_file);
+ if (!STRINGP (file))
+ {
+ image_error ("Cannot find image file `%s'", specified_file, Qnil);
+ UNGCPRO;
+ return 0;
+ }
+
+ fp = fopen (SDATA (file), "r");
+ if (fp == NULL)
+ {
+ image_error ("Cannot open `%s'", file, Qnil);
+ UNGCPRO;
+ return 0;
+ }
+ }
+
+ /* Customize libjpeg's error handling to call my_error_exit when an
+ error is detected. This function will perform a longjmp. */
+ cinfo.err = jpeg_std_error (&mgr.pub);
+ mgr.pub.error_exit = my_error_exit;
+
+ if ((rc = setjmp (mgr.setjmp_buffer)) != 0)
+ {
+ if (rc == 1)
+ {
+ /* Called from my_error_exit. Display a JPEG error. */
+ char buffer[JMSG_LENGTH_MAX];
+ cinfo.err->format_message ((j_common_ptr) &cinfo, buffer);
+ image_error ("Error reading JPEG image `%s': %s", img->spec,
+ build_string (buffer));
+ }
+
+ /* Close the input file and destroy the JPEG object. */
+ if (fp)
+ fclose ((FILE *) fp);
+ jpeg_destroy_decompress (&cinfo);
+
+ /* If we already have an XImage, free that. */
+ x_destroy_x_image (ximg);
+
+ /* Free pixmap and colors. */
+ x_clear_image (f, img);
+
+ UNGCPRO;
+ return 0;
+ }
+
+ /* Create the JPEG decompression object. Let it read from fp.
+ Read the JPEG image header. */
+ jpeg_create_decompress (&cinfo);
+
+ if (NILP (specified_data))
+ jpeg_stdio_src (&cinfo, (FILE *) fp);
+ else
+ jpeg_memory_src (&cinfo, SDATA (specified_data),
+ SBYTES (specified_data));
+
+ jpeg_read_header (&cinfo, TRUE);
+
+ /* Customize decompression so that color quantization will be used.
+ Start decompression. */
+ cinfo.quantize_colors = TRUE;
+ jpeg_start_decompress (&cinfo);
+ width = img->width = cinfo.output_width;
+ height = img->height = cinfo.output_height;
+
+ /* Create X image and pixmap. */
+ if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap))
+ longjmp (mgr.setjmp_buffer, 2);
+
+ /* Allocate colors. When color quantization is used,
+ cinfo.actual_number_of_colors has been set with the number of
+ colors generated, and cinfo.colormap is a two-dimensional array
+ of color indices in the range 0..cinfo.actual_number_of_colors.
+ No more than 255 colors will be generated. */
+ {
+ int i, ir, ig, ib;
+
+ if (cinfo.out_color_components > 2)
+ ir = 0, ig = 1, ib = 2;
+ else if (cinfo.out_color_components > 1)
+ ir = 0, ig = 1, ib = 0;
+ else
+ ir = 0, ig = 0, ib = 0;
+
+ /* Use the color table mechanism because it handles colors that
+ cannot be allocated nicely. Such colors will be replaced with
+ a default color, and we don't have to care about which colors
+ can be freed safely, and which can't. */
+ init_color_table ();
+ colors = (unsigned long *) alloca (cinfo.actual_number_of_colors
+ * sizeof *colors);
+
+ for (i = 0; i < cinfo.actual_number_of_colors; ++i)
+ {
+ /* Multiply RGB values with 255 because X expects RGB values
+ in the range 0..0xffff. */
+ int r = cinfo.colormap[ir][i] << 8;
+ int g = cinfo.colormap[ig][i] << 8;
+ int b = cinfo.colormap[ib][i] << 8;
+ colors[i] = lookup_rgb_color (f, r, g, b);
+ }
+
+ /* Remember those colors actually allocated. */
+ img->colors = colors_in_color_table (&img->ncolors);
+ free_color_table ();
+ }
+
+ /* Read pixels. */
+ row_stride = width * cinfo.output_components;
+ buffer = cinfo.mem->alloc_sarray ((j_common_ptr) &cinfo, JPOOL_IMAGE,
+ row_stride, 1);
+ for (y = 0; y < height; ++y)
+ {
+ jpeg_read_scanlines (&cinfo, buffer, 1);
+ for (x = 0; x < cinfo.output_width; ++x)
+ XPutPixel (ximg, x, y, colors[buffer[0][x]]);
+ }
+
+ /* Clean up. */
+ jpeg_finish_decompress (&cinfo);
+ jpeg_destroy_decompress (&cinfo);
+ if (fp)
+ fclose ((FILE *) fp);
+
+ /* Maybe fill in the background field while we have ximg handy. */
+ if (NILP (image_spec_value (img->spec, QCbackground, NULL)))
+ IMAGE_BACKGROUND (img, f, ximg);
+
+ /* Put the image into the pixmap. */
+ x_put_x_image (f, ximg, img->pixmap, width, height);
+ x_destroy_x_image (ximg);
+ UNGCPRO;
+ return 1;
+ }
+
+ #endif /* HAVE_JPEG */
+
+
+
+ /***********************************************************************
+ TIFF
+ ***********************************************************************/
+
+ #if HAVE_TIFF
+
+ #include <tiffio.h>
+
+ static int tiff_image_p P_ ((Lisp_Object object));
+ static int tiff_load P_ ((struct frame *f, struct image *img));
+
+ /* The symbol `tiff' identifying images of this type. */
+
+ Lisp_Object Qtiff;
+
+ /* Indices of image specification fields in tiff_format, below. */
+
+ enum tiff_keyword_index
+ {
+ TIFF_TYPE,
+ TIFF_DATA,
+ TIFF_FILE,
+ TIFF_ASCENT,
+ TIFF_MARGIN,
+ TIFF_RELIEF,
+ TIFF_ALGORITHM,
+ TIFF_HEURISTIC_MASK,
+ TIFF_MASK,
+ TIFF_BACKGROUND,
+ TIFF_LAST
+ };
+
+ /* Vector of image_keyword structures describing the format
+ of valid user-defined image specifications. */
+
+ static struct image_keyword tiff_format[TIFF_LAST] =
+ {
+ {":type", IMAGE_SYMBOL_VALUE, 1},
+ {":data", IMAGE_STRING_VALUE, 0},
+ {":file", IMAGE_STRING_VALUE, 0},
+ {":ascent", IMAGE_ASCENT_VALUE, 0},
+ {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0},
+ {":relief", IMAGE_INTEGER_VALUE, 0},
+ {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":background", IMAGE_STRING_OR_NIL_VALUE, 0}
+ };
+
+ /* Structure describing the image type `tiff'. */
+
+ static struct image_type tiff_type =
+ {
+ &Qtiff,
+ tiff_image_p,
+ tiff_load,
+ x_clear_image,
+ NULL
+ };
+
+
+ /* Return non-zero if OBJECT is a valid TIFF image specification. */
+
+ static int
+ tiff_image_p (object)
+ Lisp_Object object;
+ {
+ struct image_keyword fmt[TIFF_LAST];
+ bcopy (tiff_format, fmt, sizeof fmt);
+
+ if (!parse_image_spec (object, fmt, TIFF_LAST, Qtiff))
+ return 0;
+
+ /* Must specify either the :data or :file keyword. */
+ return fmt[TIFF_FILE].count + fmt[TIFF_DATA].count == 1;
+ }
+
+
+ /* Reading from a memory buffer for TIFF images Based on the PNG
+ memory source, but we have to provide a lot of extra functions.
+ Blah.
+
+ We really only need to implement read and seek, but I am not
+ convinced that the TIFF library is smart enough not to destroy
+ itself if we only hand it the function pointers we need to
+ override. */
+
+ typedef struct
+ {
+ unsigned char *bytes;
+ size_t len;
+ int index;
+ }
+ tiff_memory_source;
+
+
+ static size_t
+ tiff_read_from_memory (data, buf, size)
+ thandle_t data;
+ tdata_t buf;
+ tsize_t size;
+ {
+ tiff_memory_source *src = (tiff_memory_source *) data;
+
+ if (size > src->len - src->index)
+ return (size_t) -1;
+ bcopy (src->bytes + src->index, buf, size);
+ src->index += size;
+ return size;
+ }
+
+
+ static size_t
+ tiff_write_from_memory (data, buf, size)
+ thandle_t data;
+ tdata_t buf;
+ tsize_t size;
+ {
+ return (size_t) -1;
+ }
+
+
+ static toff_t
+ tiff_seek_in_memory (data, off, whence)
+ thandle_t data;
+ toff_t off;
+ int whence;
+ {
+ tiff_memory_source *src = (tiff_memory_source *) data;
+ int idx;
+
+ switch (whence)
+ {
+ case SEEK_SET: /* Go from beginning of source. */
+ idx = off;
+ break;
+
+ case SEEK_END: /* Go from end of source. */
+ idx = src->len + off;
+ break;
+
+ case SEEK_CUR: /* Go from current position. */
+ idx = src->index + off;
+ break;
+
+ default: /* Invalid `whence'. */
+ return -1;
+ }
+
+ if (idx > src->len || idx < 0)
+ return -1;
+
+ src->index = idx;
+ return src->index;
+ }
+
+
+ static int
+ tiff_close_memory (data)
+ thandle_t data;
+ {
+ /* NOOP */
+ return 0;
+ }
+
+
+ static int
+ tiff_mmap_memory (data, pbase, psize)
+ thandle_t data;
+ tdata_t *pbase;
+ toff_t *psize;
+ {
+ /* It is already _IN_ memory. */
+ return 0;
+ }
+
+
+ static void
+ tiff_unmap_memory (data, base, size)
+ thandle_t data;
+ tdata_t base;
+ toff_t size;
+ {
+ /* We don't need to do this. */
+ }
+
+
+ static toff_t
+ tiff_size_of_memory (data)
+ thandle_t data;
+ {
+ return ((tiff_memory_source *) data)->len;
+ }
+
+
+ static void
+ tiff_error_handler (title, format, ap)
+ const char *title, *format;
+ va_list ap;
+ {
+ char buf[512];
+ int len;
+
+ len = sprintf (buf, "TIFF error: %s ", title);
+ vsprintf (buf + len, format, ap);
+ add_to_log (buf, Qnil, Qnil);
+ }
+
+
+ static void
+ tiff_warning_handler (title, format, ap)
+ const char *title, *format;
+ va_list ap;
+ {
+ char buf[512];
+ int len;
+
+ len = sprintf (buf, "TIFF warning: %s ", title);
+ vsprintf (buf + len, format, ap);
+ add_to_log (buf, Qnil, Qnil);
+ }
+
+
+ /* Load TIFF image IMG for use on frame F. Value is non-zero if
+ successful. */
+
+ static int
+ tiff_load (f, img)
+ struct frame *f;
+ struct image *img;
+ {
+ Lisp_Object file, specified_file;
+ Lisp_Object specified_data;
+ TIFF *tiff;
+ int width, height, x, y;
+ uint32 *buf;
+ int rc;
+ XImage *ximg;
+ struct gcpro gcpro1;
+ tiff_memory_source memsrc;
+
+ specified_file = image_spec_value (img->spec, QCfile, NULL);
+ specified_data = image_spec_value (img->spec, QCdata, NULL);
+ file = Qnil;
+ GCPRO1 (file);
+
+ TIFFSetErrorHandler (tiff_error_handler);
+ TIFFSetWarningHandler (tiff_warning_handler);
+
+ if (NILP (specified_data))
+ {
+ /* Read from a file */
+ file = x_find_image_file (specified_file);
+ if (!STRINGP (file))
+ {
+ image_error ("Cannot find image file `%s'", file, Qnil);
+ UNGCPRO;
+ return 0;
+ }
+
+ /* Try to open the image file. */
+ tiff = TIFFOpen (SDATA (file), "r");
+ if (tiff == NULL)
+ {
+ image_error ("Cannot open `%s'", file, Qnil);
+ UNGCPRO;
+ return 0;
+ }
+ }
+ else
+ {
+ /* Memory source! */
+ memsrc.bytes = SDATA (specified_data);
+ memsrc.len = SBYTES (specified_data);
+ memsrc.index = 0;
+
+ tiff = TIFFClientOpen ("memory_source", "r", &memsrc,
+ (TIFFReadWriteProc) tiff_read_from_memory,
+ (TIFFReadWriteProc) tiff_write_from_memory,
+ tiff_seek_in_memory,
+ tiff_close_memory,
+ tiff_size_of_memory,
+ tiff_mmap_memory,
+ tiff_unmap_memory);
+
+ if (!tiff)
+ {
+ image_error ("Cannot open memory source for `%s'", img->spec, Qnil);
+ UNGCPRO;
+ return 0;
+ }
+ }
+
+ /* Get width and height of the image, and allocate a raster buffer
+ of width x height 32-bit values. */
+ TIFFGetField (tiff, TIFFTAG_IMAGEWIDTH, &width);
+ TIFFGetField (tiff, TIFFTAG_IMAGELENGTH, &height);
+ buf = (uint32 *) xmalloc (width * height * sizeof *buf);
+
+ rc = TIFFReadRGBAImage (tiff, width, height, buf, 0);
+ TIFFClose (tiff);
+ if (!rc)
+ {
+ image_error ("Error reading TIFF image `%s'", img->spec, Qnil);
+ xfree (buf);
+ UNGCPRO;
+ return 0;
+ }
+
+ /* Create the X image and pixmap. */
+ if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap))
+ {
+ xfree (buf);
+ UNGCPRO;
+ return 0;
+ }
+
+ /* Initialize the color table. */
+ init_color_table ();
+
+ /* Process the pixel raster. Origin is in the lower-left corner. */
+ for (y = 0; y < height; ++y)
+ {
+ uint32 *row = buf + y * width;
+
+ for (x = 0; x < width; ++x)
+ {
+ uint32 abgr = row[x];
+ int r = TIFFGetR (abgr) << 8;
+ int g = TIFFGetG (abgr) << 8;
+ int b = TIFFGetB (abgr) << 8;
+ XPutPixel (ximg, x, height - 1 - y, lookup_rgb_color (f, r, g, b));
+ }
+ }
+
+ /* Remember the colors allocated for the image. Free the color table. */
+ img->colors = colors_in_color_table (&img->ncolors);
+ free_color_table ();
+
+ img->width = width;
+ img->height = height;
+
+ /* Maybe fill in the background field while we have ximg handy. */
+ if (NILP (image_spec_value (img->spec, QCbackground, NULL)))
+ IMAGE_BACKGROUND (img, f, ximg);
+
+ /* Put the image into the pixmap, then free the X image and its buffer. */
+ x_put_x_image (f, ximg, img->pixmap, width, height);
+ x_destroy_x_image (ximg);
+ xfree (buf);
+
+ UNGCPRO;
+ return 1;
+ }
+
+ #endif /* HAVE_TIFF != 0 */
+
+
+
+ /***********************************************************************
+ GIF
+ ***********************************************************************/
+
+ #if HAVE_GIF
+
+ #include <gif_lib.h>
+
+ static int gif_image_p P_ ((Lisp_Object object));
+ static int gif_load P_ ((struct frame *f, struct image *img));
+
+ /* The symbol `gif' identifying images of this type. */
+
+ Lisp_Object Qgif;
+
+ /* Indices of image specification fields in gif_format, below. */
+
+ enum gif_keyword_index
+ {
+ GIF_TYPE,
+ GIF_DATA,
+ GIF_FILE,
+ GIF_ASCENT,
+ GIF_MARGIN,
+ GIF_RELIEF,
+ GIF_ALGORITHM,
+ GIF_HEURISTIC_MASK,
+ GIF_MASK,
+ GIF_IMAGE,
+ GIF_BACKGROUND,
+ GIF_LAST
+ };
+
+ /* Vector of image_keyword structures describing the format
+ of valid user-defined image specifications. */
+
+ static struct image_keyword gif_format[GIF_LAST] =
+ {
+ {":type", IMAGE_SYMBOL_VALUE, 1},
+ {":data", IMAGE_STRING_VALUE, 0},
+ {":file", IMAGE_STRING_VALUE, 0},
+ {":ascent", IMAGE_ASCENT_VALUE, 0},
+ {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0},
+ {":relief", IMAGE_INTEGER_VALUE, 0},
+ {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":image", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0},
+ {":background", IMAGE_STRING_OR_NIL_VALUE, 0}
+ };
+
+ /* Structure describing the image type `gif'. */
+
+ static struct image_type gif_type =
+ {
+ &Qgif,
+ gif_image_p,
+ gif_load,
+ x_clear_image,
+ NULL
+ };
+
+
+ /* Return non-zero if OBJECT is a valid GIF image specification. */
+
+ static int
+ gif_image_p (object)
+ Lisp_Object object;
+ {
+ struct image_keyword fmt[GIF_LAST];
+ bcopy (gif_format, fmt, sizeof fmt);
+
+ if (!parse_image_spec (object, fmt, GIF_LAST, Qgif))
+ return 0;
+
+ /* Must specify either the :data or :file keyword. */
+ return fmt[GIF_FILE].count + fmt[GIF_DATA].count == 1;
+ }
+
+
+ /* Reading a GIF image from memory
+ Based on the PNG memory stuff to a certain extent. */
+
+ typedef struct
+ {
+ unsigned char *bytes;
+ size_t len;
+ int index;
+ }
+ gif_memory_source;
+
+
+ /* Make the current memory source available to gif_read_from_memory.
+ It's done this way because not all versions of libungif support
+ a UserData field in the GifFileType structure. */
+ static gif_memory_source *current_gif_memory_src;
+
+ static int
+ gif_read_from_memory (file, buf, len)
+ GifFileType *file;
+ GifByteType *buf;
+ int len;
+ {
+ gif_memory_source *src = current_gif_memory_src;
+
+ if (len > src->len - src->index)
+ return -1;
+
+ bcopy (src->bytes + src->index, buf, len);
+ src->index += len;
+ return len;
+ }
+
+
+ /* Load GIF image IMG for use on frame F. Value is non-zero if
+ successful. */
+
+ static int
+ gif_load (f, img)
+ struct frame *f;
+ struct image *img;
+ {
+ Lisp_Object file, specified_file;
+ Lisp_Object specified_data;
+ int rc, width, height, x, y, i;
+ XImage *ximg;
+ ColorMapObject *gif_color_map;
+ unsigned long pixel_colors[256];
+ GifFileType *gif;
+ struct gcpro gcpro1;
+ Lisp_Object image;
+ int ino, image_left, image_top, image_width, image_height;
+ gif_memory_source memsrc;
+ unsigned char *raster;
+
+ specified_file = image_spec_value (img->spec, QCfile, NULL);
+ specified_data = image_spec_value (img->spec, QCdata, NULL);
+ file = Qnil;
+ GCPRO1 (file);
+
+ if (NILP (specified_data))
+ {
+ file = x_find_image_file (specified_file);
+ if (!STRINGP (file))
+ {
+ image_error ("Cannot find image file `%s'", specified_file, Qnil);
+ UNGCPRO;
+ return 0;
+ }
+
+ /* Open the GIF file. */
+ gif = DGifOpenFileName (SDATA (file));
+ if (gif == NULL)
+ {
+ image_error ("Cannot open `%s'", file, Qnil);
+ UNGCPRO;
+ return 0;
+ }
+ }
+ else
+ {
+ /* Read from memory! */
+ current_gif_memory_src = &memsrc;
+ memsrc.bytes = SDATA (specified_data);
+ memsrc.len = SBYTES (specified_data);
+ memsrc.index = 0;
+
+ gif = DGifOpen(&memsrc, gif_read_from_memory);
+ if (!gif)
+ {
+ image_error ("Cannot open memory source `%s'", img->spec, Qnil);
+ UNGCPRO;
+ return 0;
+ }
+ }
+
+ /* Read entire contents. */
+ rc = DGifSlurp (gif);
+ if (rc == GIF_ERROR)
+ {
+ image_error ("Error reading `%s'", img->spec, Qnil);
+ DGifCloseFile (gif);
+ UNGCPRO;
+ return 0;
+ }
+
+ image = image_spec_value (img->spec, QCindex, NULL);
+ ino = INTEGERP (image) ? XFASTINT (image) : 0;
+ if (ino >= gif->ImageCount)
+ {
+ image_error ("Invalid image number `%s' in image `%s'",
+ image, img->spec);
+ DGifCloseFile (gif);
+ UNGCPRO;
+ return 0;
+ }
+
+ width = img->width = max (gif->SWidth, gif->Image.Left + gif->Image.Width);
+ height = img->height = max (gif->SHeight, gif->Image.Top +
gif->Image.Height);
+
+ /* Create the X image and pixmap. */
+ if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap))
+ {
+ DGifCloseFile (gif);
+ UNGCPRO;
+ return 0;
+ }
+
+ /* Allocate colors. */
+ gif_color_map = gif->SavedImages[ino].ImageDesc.ColorMap;
+ if (!gif_color_map)
+ gif_color_map = gif->SColorMap;
+ init_color_table ();
+ bzero (pixel_colors, sizeof pixel_colors);
+
+ for (i = 0; i < gif_color_map->ColorCount; ++i)
+ {
+ int r = gif_color_map->Colors[i].Red << 8;
+ int g = gif_color_map->Colors[i].Green << 8;
+ int b = gif_color_map->Colors[i].Blue << 8;
+ pixel_colors[i] = lookup_rgb_color (f, r, g, b);
+ }
+
+ img->colors = colors_in_color_table (&img->ncolors);
+ free_color_table ();
+
+ /* Clear the part of the screen image that are not covered by
+ the image from the GIF file. Full animated GIF support
+ requires more than can be done here (see the gif89 spec,
+ disposal methods). Let's simply assume that the part
+ not covered by a sub-image is in the frame's background color. */
+ image_top = gif->SavedImages[ino].ImageDesc.Top;
+ image_left = gif->SavedImages[ino].ImageDesc.Left;
+ image_width = gif->SavedImages[ino].ImageDesc.Width;
+ image_height = gif->SavedImages[ino].ImageDesc.Height;
+
+ for (y = 0; y < image_top; ++y)
+ for (x = 0; x < width; ++x)
+ XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f));
+
+ for (y = image_top + image_height; y < height; ++y)
+ for (x = 0; x < width; ++x)
+ XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f));
+
+ for (y = image_top; y < image_top + image_height; ++y)
+ {
+ for (x = 0; x < image_left; ++x)
+ XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f));
+ for (x = image_left + image_width; x < width; ++x)
+ XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f));
+ }
+
+ /* Read the GIF image into the X image. We use a local variable
+ `raster' here because RasterBits below is a char *, and invites
+ problems with bytes >= 0x80. */
+ raster = (unsigned char *) gif->SavedImages[ino].RasterBits;
+
+ if (gif->SavedImages[ino].ImageDesc.Interlace)
+ {
+ static int interlace_start[] = {0, 4, 2, 1};
+ static int interlace_increment[] = {8, 8, 4, 2};
+ int pass;
+ int row = interlace_start[0];
+
+ pass = 0;
+
+ for (y = 0; y < image_height; y++)
+ {
+ if (row >= image_height)
+ {
+ row = interlace_start[++pass];
+ while (row >= image_height)
+ row = interlace_start[++pass];
+ }
+
+ for (x = 0; x < image_width; x++)
+ {
+ int i = raster[(y * image_width) + x];
+ XPutPixel (ximg, x + image_left, row + image_top,
+ pixel_colors[i]);
+ }
+
+ row += interlace_increment[pass];
+ }
+ }
+ else
+ {
+ for (y = 0; y < image_height; ++y)
+ for (x = 0; x < image_width; ++x)
+ {
+ int i = raster[y * image_width + x];
+ XPutPixel (ximg, x + image_left, y + image_top, pixel_colors[i]);
+ }
+ }
+
+ DGifCloseFile (gif);
+
+ /* Maybe fill in the background field while we have ximg handy. */
+ if (NILP (image_spec_value (img->spec, QCbackground, NULL)))
+ IMAGE_BACKGROUND (img, f, ximg);
+
+ /* Put the image into the pixmap, then free the X image and its buffer. */
+ x_put_x_image (f, ximg, img->pixmap, width, height);
+ x_destroy_x_image (ximg);
+
+ UNGCPRO;
+ return 1;
+ }
+
+ #endif /* HAVE_GIF != 0 */
+
+
+
+ /***********************************************************************
+ Ghostscript
+ ***********************************************************************/
+
+ static int gs_image_p P_ ((Lisp_Object object));
+ static int gs_load P_ ((struct frame *f, struct image *img));
+ static void gs_clear_image P_ ((struct frame *f, struct image *img));
+
+ /* The symbol `postscript' identifying images of this type. */
+
+ Lisp_Object Qpostscript;
+
+ /* Keyword symbols. */
+
+ Lisp_Object QCloader, QCbounding_box, QCpt_width, QCpt_height;
+
+ /* Indices of image specification fields in gs_format, below. */
+
+ enum gs_keyword_index
+ {
+ GS_TYPE,
+ GS_PT_WIDTH,
+ GS_PT_HEIGHT,
+ GS_FILE,
+ GS_LOADER,
+ GS_BOUNDING_BOX,
+ GS_ASCENT,
+ GS_MARGIN,
+ GS_RELIEF,
+ GS_ALGORITHM,
+ GS_HEURISTIC_MASK,
+ GS_MASK,
+ GS_BACKGROUND,
+ GS_LAST
+ };
+
+ /* Vector of image_keyword structures describing the format
+ of valid user-defined image specifications. */
+
+ static struct image_keyword gs_format[GS_LAST] =
+ {
+ {":type", IMAGE_SYMBOL_VALUE, 1},
+ {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE, 1},
+ {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE, 1},
+ {":file", IMAGE_STRING_VALUE, 1},
+ {":loader", IMAGE_FUNCTION_VALUE, 0},
+ {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE, 1},
+ {":ascent", IMAGE_ASCENT_VALUE, 0},
+ {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0},
+ {":relief", IMAGE_INTEGER_VALUE, 0},
+ {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0},
+ {":background", IMAGE_STRING_OR_NIL_VALUE, 0}
+ };
+
+ /* Structure describing the image type `ghostscript'. */
+
+ static struct image_type gs_type =
+ {
+ &Qpostscript,
+ gs_image_p,
+ gs_load,
+ gs_clear_image,
+ NULL
+ };
+
+
+ /* Free X resources of Ghostscript image IMG which is used on frame F. */
+
+ static void
+ gs_clear_image (f, img)
+ struct frame *f;
+ struct image *img;
+ {
+ /* IMG->data.ptr_val may contain a recorded colormap. */
+ xfree (img->data.ptr_val);
+ x_clear_image (f, img);
+ }
+
+
+ /* Return non-zero if OBJECT is a valid Ghostscript image
+ specification. */
+
+ static int
+ gs_image_p (object)
+ Lisp_Object object;
+ {
+ struct image_keyword fmt[GS_LAST];
+ Lisp_Object tem;
+ int i;
+
+ bcopy (gs_format, fmt, sizeof fmt);
+
+ if (!parse_image_spec (object, fmt, GS_LAST, Qpostscript))
+ return 0;
+
+ /* Bounding box must be a list or vector containing 4 integers. */
+ tem = fmt[GS_BOUNDING_BOX].value;
+ if (CONSP (tem))
+ {
+ for (i = 0; i < 4; ++i, tem = XCDR (tem))
+ if (!CONSP (tem) || !INTEGERP (XCAR (tem)))
+ return 0;
+ if (!NILP (tem))
+ return 0;
+ }
+ else if (VECTORP (tem))
+ {
+ if (XVECTOR (tem)->size != 4)
+ return 0;
+ for (i = 0; i < 4; ++i)
+ if (!INTEGERP (XVECTOR (tem)->contents[i]))
+ return 0;
+ }
+ else
+ return 0;
+
+ return 1;
+ }
+
+
+ /* Load Ghostscript image IMG for use on frame F. Value is non-zero
+ if successful. */
+
+ static int
+ gs_load (f, img)
+ struct frame *f;
+ struct image *img;
+ {
+ char buffer[100];
+ Lisp_Object window_and_pixmap_id = Qnil, loader, pt_height, pt_width;
+ struct gcpro gcpro1, gcpro2;
+ Lisp_Object frame;
+ double in_width, in_height;
+ Lisp_Object pixel_colors = Qnil;
+
+ /* Compute pixel size of pixmap needed from the given size in the
+ image specification. Sizes in the specification are in pt. 1 pt
+ = 1/72 in, xdpi and ydpi are stored in the frame's X display
+ info. */
+ pt_width = image_spec_value (img->spec, QCpt_width, NULL);
+ in_width = XFASTINT (pt_width) / 72.0;
+ img->width = in_width * FRAME_X_DISPLAY_INFO (f)->resx;
+ pt_height = image_spec_value (img->spec, QCpt_height, NULL);
+ in_height = XFASTINT (pt_height) / 72.0;
+ img->height = in_height * FRAME_X_DISPLAY_INFO (f)->resy;
+
+ /* Create the pixmap. */
+ xassert (img->pixmap == None);
+ img->pixmap = XCreatePixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ img->width, img->height,
+ DefaultDepthOfScreen (FRAME_X_SCREEN (f)));
+
+ if (!img->pixmap)
+ {
+ image_error ("Unable to create pixmap for `%s'", img->spec, Qnil);
+ return 0;
+ }
+
+ /* Call the loader to fill the pixmap. It returns a process object
+ if successful. We do not record_unwind_protect here because
+ other places in redisplay like calling window scroll functions
+ don't either. Let the Lisp loader use `unwind-protect' instead. */
+ GCPRO2 (window_and_pixmap_id, pixel_colors);
+
+ sprintf (buffer, "%lu %lu",
+ (unsigned long) FRAME_X_WINDOW (f),
+ (unsigned long) img->pixmap);
+ window_and_pixmap_id = build_string (buffer);
+
+ sprintf (buffer, "%lu %lu",
+ FRAME_FOREGROUND_PIXEL (f),
+ FRAME_BACKGROUND_PIXEL (f));
+ pixel_colors = build_string (buffer);
+
+ XSETFRAME (frame, f);
+ loader = image_spec_value (img->spec, QCloader, NULL);
+ if (NILP (loader))
+ loader = intern ("gs-load-image");
+
+ img->data.lisp_val = call6 (loader, frame, img->spec,
+ make_number (img->width),
+ make_number (img->height),
+ window_and_pixmap_id,
+ pixel_colors);
+ UNGCPRO;
+ return PROCESSP (img->data.lisp_val);
+ }
+
+
+ /* Kill the Ghostscript process that was started to fill PIXMAP on
+ frame F. Called from XTread_socket when receiving an event
+ telling Emacs that Ghostscript has finished drawing. */
+
+ void
+ x_kill_gs_process (pixmap, f)
+ Pixmap pixmap;
+ struct frame *f;
+ {
+ struct image_cache *c = FRAME_X_IMAGE_CACHE (f);
+ int class, i;
+ struct image *img;
+
+ /* Find the image containing PIXMAP. */
+ for (i = 0; i < c->used; ++i)
+ if (c->images[i]->pixmap == pixmap)
+ break;
+
+ /* Should someone in between have cleared the image cache, for
+ instance, give up. */
+ if (i == c->used)
+ return;
+
+ /* Kill the GS process. We should have found PIXMAP in the image
+ cache and its image should contain a process object. */
+ img = c->images[i];
+ xassert (PROCESSP (img->data.lisp_val));
+ Fkill_process (img->data.lisp_val, Qnil);
+ img->data.lisp_val = Qnil;
+
+ /* On displays with a mutable colormap, figure out the colors
+ allocated for the image by looking at the pixels of an XImage for
+ img->pixmap. */
+ class = FRAME_X_VISUAL (f)->class;
+ if (class != StaticColor && class != StaticGray && class != TrueColor)
+ {
+ XImage *ximg;
+
+ BLOCK_INPUT;
+
+ /* Try to get an XImage for img->pixmep. */
+ ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap,
+ 0, 0, img->width, img->height, ~0, ZPixmap);
+ if (ximg)
+ {
+ int x, y;
+
+ /* Initialize the color table. */
+ init_color_table ();
+
+ /* For each pixel of the image, look its color up in the
+ color table. After having done so, the color table will
+ contain an entry for each color used by the image. */
+ for (y = 0; y < img->height; ++y)
+ for (x = 0; x < img->width; ++x)
+ {
+ unsigned long pixel = XGetPixel (ximg, x, y);
+ lookup_pixel_color (f, pixel);
+ }
+
+ /* Record colors in the image. Free color table and XImage. */
+ img->colors = colors_in_color_table (&img->ncolors);
+ free_color_table ();
+ XDestroyImage (ximg);
+
+ #if 0 /* This doesn't seem to be the case. If we free the colors
+ here, we get a BadAccess later in x_clear_image when
+ freeing the colors. */
+ /* We have allocated colors once, but Ghostscript has also
+ allocated colors on behalf of us. So, to get the
+ reference counts right, free them once. */
+ if (img->ncolors)
+ x_free_colors (f, img->colors, img->ncolors);
+ #endif
+ }
+ else
+ image_error ("Cannot get X image of `%s'; colors will not be freed",
+ img->spec, Qnil);
+
+ UNBLOCK_INPUT;
+ }
+
+ /* Now that we have the pixmap, compute mask and transform the
+ image if requested. */
+ BLOCK_INPUT;
+ postprocess_image (f, img);
+ UNBLOCK_INPUT;
+ }
+
+
+
+ /***********************************************************************
+ Window properties
+ ***********************************************************************/
+
+ DEFUN ("x-change-window-property", Fx_change_window_property,
+ Sx_change_window_property, 2, 3, 0,
+ doc: /* Change window property PROP to VALUE on the X window of FRAME.
+ PROP and VALUE must be strings. FRAME nil or omitted means use the
+ selected frame. Value is VALUE. */)
+ (prop, value, frame)
+ Lisp_Object frame, prop, value;
+ {
+ struct frame *f = check_x_frame (frame);
+ Atom prop_atom;
+
+ CHECK_STRING (prop);
+ CHECK_STRING (value);
+
+ BLOCK_INPUT;
+ prop_atom = XInternAtom (FRAME_X_DISPLAY (f), SDATA (prop), False);
+ XChangeProperty (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ prop_atom, XA_STRING, 8, PropModeReplace,
+ SDATA (value), SCHARS (value));
+
+ /* Make sure the property is set when we return. */
+ XFlush (FRAME_X_DISPLAY (f));
+ UNBLOCK_INPUT;
+
+ return value;
+ }
+
+
+ DEFUN ("x-delete-window-property", Fx_delete_window_property,
+ Sx_delete_window_property, 1, 2, 0,
+ doc: /* Remove window property PROP from X window of FRAME.
+ FRAME nil or omitted means use the selected frame. Value is PROP. */)
+ (prop, frame)
+ Lisp_Object prop, frame;
+ {
+ struct frame *f = check_x_frame (frame);
+ Atom prop_atom;
+
+ CHECK_STRING (prop);
+ BLOCK_INPUT;
+ prop_atom = XInternAtom (FRAME_X_DISPLAY (f), SDATA (prop), False);
+ XDeleteProperty (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), prop_atom);
+
+ /* Make sure the property is removed when we return. */
+ XFlush (FRAME_X_DISPLAY (f));
+ UNBLOCK_INPUT;
+
+ return prop;
+ }
+
+
+ DEFUN ("x-window-property", Fx_window_property, Sx_window_property,
+ 1, 2, 0,
+ doc: /* Value is the value of window property PROP on FRAME.
+ If FRAME is nil or omitted, use the selected frame. Value is nil
+ if FRAME hasn't a property with name PROP or if PROP has no string
+ value. */)
+ (prop, frame)
+ Lisp_Object prop, frame;
+ {
+ struct frame *f = check_x_frame (frame);
+ Atom prop_atom;
+ int rc;
+ Lisp_Object prop_value = Qnil;
+ char *tmp_data = NULL;
+ Atom actual_type;
+ int actual_format;
+ unsigned long actual_size, bytes_remaining;
+
+ CHECK_STRING (prop);
+ BLOCK_INPUT;
+ prop_atom = XInternAtom (FRAME_X_DISPLAY (f), SDATA (prop), False);
+ rc = XGetWindowProperty (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ prop_atom, 0, 0, False, XA_STRING,
+ &actual_type, &actual_format, &actual_size,
+ &bytes_remaining, (unsigned char **) &tmp_data);
+ if (rc == Success)
+ {
+ int size = bytes_remaining;
+
+ XFree (tmp_data);
+ tmp_data = NULL;
+
+ rc = XGetWindowProperty (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ prop_atom, 0, bytes_remaining,
+ False, XA_STRING,
+ &actual_type, &actual_format,
+ &actual_size, &bytes_remaining,
+ (unsigned char **) &tmp_data);
+ if (rc == Success && tmp_data)
+ prop_value = make_string (tmp_data, size);
+
+ XFree (tmp_data);
+ }
+
+ UNBLOCK_INPUT;
+ return prop_value;
+ }
+
+
+
+ /***********************************************************************
+ Busy cursor
+ ***********************************************************************/
+
+ /* If non-null, an asynchronous timer that, when it expires, displays
+ an hourglass cursor on all frames. */
+
+ static struct atimer *hourglass_atimer;
+
+ /* Non-zero means an hourglass cursor is currently shown. */
+
+ static int hourglass_shown_p;
+
+ /* Number of seconds to wait before displaying an hourglass cursor. */
+
+ static Lisp_Object Vhourglass_delay;
+
+ /* Default number of seconds to wait before displaying an hourglass
+ cursor. */
+
+ #define DEFAULT_HOURGLASS_DELAY 1
+
+ /* Function prototypes. */
+
+ static void show_hourglass P_ ((struct atimer *));
+ static void hide_hourglass P_ ((void));
+
+
+ /* Cancel a currently active hourglass timer, and start a new one. */
+
+ void
+ start_hourglass ()
+ {
+ EMACS_TIME delay;
+ int secs, usecs = 0;
+
+ cancel_hourglass ();
+
+ if (INTEGERP (Vhourglass_delay)
+ && XINT (Vhourglass_delay) > 0)
+ secs = XFASTINT (Vhourglass_delay);
+ else if (FLOATP (Vhourglass_delay)
+ && XFLOAT_DATA (Vhourglass_delay) > 0)
+ {
+ Lisp_Object tem;
+ tem = Ftruncate (Vhourglass_delay, Qnil);
+ secs = XFASTINT (tem);
+ usecs = (XFLOAT_DATA (Vhourglass_delay) - secs) * 1000000;
+ }
+ else
+ secs = DEFAULT_HOURGLASS_DELAY;
+
+ EMACS_SET_SECS_USECS (delay, secs, usecs);
+ hourglass_atimer = start_atimer (ATIMER_RELATIVE, delay,
+ show_hourglass, NULL);
+ }
+
+
+ /* Cancel the hourglass cursor timer if active, hide a busy cursor if
+ shown. */
+
+ void
+ cancel_hourglass ()
+ {
+ if (hourglass_atimer)
+ {
+ cancel_atimer (hourglass_atimer);
+ hourglass_atimer = NULL;
+ }
+
+ if (hourglass_shown_p)
+ hide_hourglass ();
+ }
+
+
+ /* Timer function of hourglass_atimer. TIMER is equal to
+ hourglass_atimer.
+
+ Display an hourglass pointer on all frames by mapping the frames'
+ hourglass_window. Set the hourglass_p flag in the frames'
+ output_data.x structure to indicate that an hourglass cursor is
+ shown on the frames. */
+
+ static void
+ show_hourglass (timer)
+ struct atimer *timer;
+ {
+ /* The timer implementation will cancel this timer automatically
+ after this function has run. Set hourglass_atimer to null
+ so that we know the timer doesn't have to be canceled. */
+ hourglass_atimer = NULL;
+
+ if (!hourglass_shown_p)
+ {
+ Lisp_Object rest, frame;
+
+ BLOCK_INPUT;
+
+ FOR_EACH_FRAME (rest, frame)
+ {
+ struct frame *f = XFRAME (frame);
+
+ if (FRAME_LIVE_P (f) && FRAME_X_P (f) && FRAME_X_DISPLAY (f))
+ {
+ Display *dpy = FRAME_X_DISPLAY (f);
+
+ #ifdef USE_X_TOOLKIT
+ if (f->output_data.x->widget)
+ #else
+ if (FRAME_OUTER_WINDOW (f))
+ #endif
+ {
+ f->output_data.x->hourglass_p = 1;
+
+ if (!f->output_data.x->hourglass_window)
+ {
+ unsigned long mask = CWCursor;
+ XSetWindowAttributes attrs;
+
+ attrs.cursor = f->output_data.x->hourglass_cursor;
+
+ f->output_data.x->hourglass_window
+ = XCreateWindow (dpy, FRAME_OUTER_WINDOW (f),
+ 0, 0, 32000, 32000, 0, 0,
+ InputOnly,
+ CopyFromParent,
+ mask, &attrs);
+ }
+
+ XMapRaised (dpy, f->output_data.x->hourglass_window);
+ XFlush (dpy);
+ }
+ }
+ }
+
+ hourglass_shown_p = 1;
+ UNBLOCK_INPUT;
+ }
+ }
+
+
+ /* Hide the hourglass pointer on all frames, if it is currently
+ shown. */
+
+ static void
+ hide_hourglass ()
+ {
+ if (hourglass_shown_p)
+ {
+ Lisp_Object rest, frame;
+
+ BLOCK_INPUT;
+ FOR_EACH_FRAME (rest, frame)
+ {
+ struct frame *f = XFRAME (frame);
+
+ if (FRAME_X_P (f)
+ /* Watch out for newly created frames. */
+ && f->output_data.x->hourglass_window)
+ {
+ XUnmapWindow (FRAME_X_DISPLAY (f),
+ f->output_data.x->hourglass_window);
+ /* Sync here because XTread_socket looks at the
+ hourglass_p flag that is reset to zero below. */
+ XSync (FRAME_X_DISPLAY (f), False);
+ f->output_data.x->hourglass_p = 0;
+ }
+ }
+
+ hourglass_shown_p = 0;
+ UNBLOCK_INPUT;
+ }
+ }
+
+
+
+ /***********************************************************************
+ Tool tips
+ ***********************************************************************/
+
+ static Lisp_Object x_create_tip_frame P_ ((struct x_display_info *,
+ Lisp_Object, Lisp_Object));
+ static void compute_tip_xy P_ ((struct frame *, Lisp_Object, Lisp_Object,
+ Lisp_Object, int, int, int *, int *));
+
+ /* The frame of a currently visible tooltip. */
+
+ Lisp_Object tip_frame;
+
+ /* If non-nil, a timer started that hides the last tooltip when it
+ fires. */
+
+ Lisp_Object tip_timer;
+ Window tip_window;
+
+ /* If non-nil, a vector of 3 elements containing the last args
+ with which x-show-tip was called. See there. */
+
+ Lisp_Object last_show_tip_args;
+
+ /* Maximum size for tooltips; a cons (COLUMNS . ROWS). */
+
+ Lisp_Object Vx_max_tooltip_size;
+
+
+ static Lisp_Object
+ unwind_create_tip_frame (frame)
+ Lisp_Object frame;
+ {
+ Lisp_Object deleted;
+
+ deleted = unwind_create_frame (frame);
+ if (EQ (deleted, Qt))
+ {
+ tip_window = None;
+ tip_frame = Qnil;
+ }
+
+ return deleted;
+ }
+
+
+ /* Create a frame for a tooltip on the display described by DPYINFO.
+ PARMS is a list of frame parameters. TEXT is the string to
+ display in the tip frame. Value is the frame.
+
+ Note that functions called here, esp. x_default_parameter can
+ signal errors, for instance when a specified color name is
+ undefined. We have to make sure that we're in a consistent state
+ when this happens. */
+
+ static Lisp_Object
+ x_create_tip_frame (dpyinfo, parms, text)
+ struct x_display_info *dpyinfo;
+ Lisp_Object parms, text;
+ {
+ struct frame *f;
+ Lisp_Object frame, tem;
+ Lisp_Object name;
+ long window_prompting = 0;
+ int width, height;
+ int count = SPECPDL_INDEX ();
+ struct gcpro gcpro1, gcpro2, gcpro3;
+ struct kboard *kb;
+ int face_change_count_before = face_change_count;
+ Lisp_Object buffer;
+ struct buffer *old_buffer;
+
+ check_x ();
+
+ /* Use this general default value to start with until we know if
+ this frame has a specified name. */
+ Vx_resource_name = Vinvocation_name;
+
+ #ifdef MULTI_KBOARD
+ kb = dpyinfo->kboard;
+ #else
+ kb = &the_only_kboard;
+ #endif
+
+ /* Get the name of the frame to use for resource lookup. */
+ name = x_get_arg (dpyinfo, parms, Qname, "name", "Name", RES_TYPE_STRING);
+ if (!STRINGP (name)
+ && !EQ (name, Qunbound)
+ && !NILP (name))
+ error ("Invalid frame name--not a string or nil");
+ Vx_resource_name = name;
+
+ frame = Qnil;
+ GCPRO3 (parms, name, frame);
+ f = make_frame (1);
+ XSETFRAME (frame, f);
+
+ buffer = Fget_buffer_create (build_string (" *tip*"));
+ Fset_window_buffer (FRAME_ROOT_WINDOW (f), buffer, Qnil);
+ old_buffer = current_buffer;
+ set_buffer_internal_1 (XBUFFER (buffer));
+ current_buffer->truncate_lines = Qnil;
+ Ferase_buffer ();
+ Finsert (1, &text);
+ set_buffer_internal_1 (old_buffer);
+
+ FRAME_CAN_HAVE_SCROLL_BARS (f) = 0;
+ record_unwind_protect (unwind_create_tip_frame, frame);
+
+ /* By setting the output method, we're essentially saying that
+ the frame is live, as per FRAME_LIVE_P. If we get a signal
+ from this point on, x_destroy_window might screw up reference
+ counts etc. */
+ f->output_method = output_x_window;
+ f->output_data.x = (struct x_output *) xmalloc (sizeof (struct x_output));
+ bzero (f->output_data.x, sizeof (struct x_output));
+ f->output_data.x->icon_bitmap = -1;
+ FRAME_FONTSET (f) = -1;
+ f->output_data.x->scroll_bar_foreground_pixel = -1;
+ f->output_data.x->scroll_bar_background_pixel = -1;
+ #ifdef USE_TOOLKIT_SCROLL_BARS
+ f->output_data.x->scroll_bar_top_shadow_pixel = -1;
+ f->output_data.x->scroll_bar_bottom_shadow_pixel = -1;
+ #endif /* USE_TOOLKIT_SCROLL_BARS */
+ f->icon_name = Qnil;
+ FRAME_X_DISPLAY_INFO (f) = dpyinfo;
+ #if GLYPH_DEBUG
+ image_cache_refcount = FRAME_X_IMAGE_CACHE (f)->refcount;
+ dpyinfo_refcount = dpyinfo->reference_count;
+ #endif /* GLYPH_DEBUG */
+ #ifdef MULTI_KBOARD
+ FRAME_KBOARD (f) = kb;
+ #endif
+ f->output_data.x->parent_desc = FRAME_X_DISPLAY_INFO (f)->root_window;
+ f->output_data.x->explicit_parent = 0;
+
+ /* These colors will be set anyway later, but it's important
+ to get the color reference counts right, so initialize them! */
+ {
+ Lisp_Object black;
+ struct gcpro gcpro1;
+
+ black = build_string ("black");
+ GCPRO1 (black);
+ f->output_data.x->foreground_pixel
+ = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
+ f->output_data.x->background_pixel
+ = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
+ f->output_data.x->cursor_pixel
+ = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
+ f->output_data.x->cursor_foreground_pixel
+ = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
+ f->output_data.x->border_pixel
+ = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
+ f->output_data.x->mouse_pixel
+ = x_decode_color (f, black, BLACK_PIX_DEFAULT (f));
+ UNGCPRO;
+ }
+
+ /* Set the name; the functions to which we pass f expect the name to
+ be set. */
+ if (EQ (name, Qunbound) || NILP (name))
+ {
+ f->name = build_string (dpyinfo->x_id_name);
+ f->explicit_name = 0;
+ }
+ else
+ {
+ f->name = name;
+ f->explicit_name = 1;
+ /* use the frame's title when getting resources for this frame. */
+ specbind (Qx_resource_name, name);
+ }
+
+ /* Extract the window parameters from the supplied values that are
+ needed to determine window geometry. */
+ {
+ Lisp_Object font;
+
+ font = x_get_arg (dpyinfo, parms, Qfont, "font", "Font", RES_TYPE_STRING);
+
+ BLOCK_INPUT;
+ /* First, try whatever font the caller has specified. */
+ if (STRINGP (font))
+ {
+ tem = Fquery_fontset (font, Qnil);
+ if (STRINGP (tem))
+ font = x_new_fontset (f, SDATA (tem));
+ else
+ font = x_new_font (f, SDATA (font));
+ }
+
+ /* Try out a font which we hope has bold and italic variations. */
+ if (!STRINGP (font))
+ font = x_new_font (f,
"-adobe-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-1");
+ if (!STRINGP (font))
+ font = x_new_font (f,
"-misc-fixed-medium-r-normal-*-*-140-*-*-c-*-iso8859-1");
+ if (! STRINGP (font))
+ font = x_new_font (f, "-*-*-medium-r-normal-*-*-140-*-*-c-*-iso8859-1");
+ if (! STRINGP (font))
+ /* This was formerly the first thing tried, but it finds too many fonts
+ and takes too long. */
+ font = x_new_font (f, "-*-*-medium-r-*-*-*-*-*-*-c-*-iso8859-1");
+ /* If those didn't work, look for something which will at least work. */
+ if (! STRINGP (font))
+ font = x_new_font (f, "-*-fixed-*-*-*-*-*-140-*-*-c-*-iso8859-1");
+ UNBLOCK_INPUT;
+ if (! STRINGP (font))
+ font = build_string ("fixed");
+
+ x_default_parameter (f, parms, Qfont, font,
+ "font", "Font", RES_TYPE_STRING);
+ }
+
+ x_default_parameter (f, parms, Qborder_width, make_number (2),
+ "borderWidth", "BorderWidth", RES_TYPE_NUMBER);
+
+ /* This defaults to 2 in order to match xterm. We recognize either
+ internalBorderWidth or internalBorder (which is what xterm calls
+ it). */
+ if (NILP (Fassq (Qinternal_border_width, parms)))
+ {
+ Lisp_Object value;
+
+ value = x_get_arg (dpyinfo, parms, Qinternal_border_width,
+ "internalBorder", "internalBorder", RES_TYPE_NUMBER);
+ if (! EQ (value, Qunbound))
+ parms = Fcons (Fcons (Qinternal_border_width, value),
+ parms);
+ }
+
+ x_default_parameter (f, parms, Qinternal_border_width, make_number (1),
+ "internalBorderWidth", "internalBorderWidth",
+ RES_TYPE_NUMBER);
+
+ /* Also do the stuff which must be set before the window exists. */
+ x_default_parameter (f, parms, Qforeground_color, build_string ("black"),
+ "foreground", "Foreground", RES_TYPE_STRING);
+ x_default_parameter (f, parms, Qbackground_color, build_string ("white"),
+ "background", "Background", RES_TYPE_STRING);
+ x_default_parameter (f, parms, Qmouse_color, build_string ("black"),
+ "pointerColor", "Foreground", RES_TYPE_STRING);
+ x_default_parameter (f, parms, Qcursor_color, build_string ("black"),
+ "cursorColor", "Foreground", RES_TYPE_STRING);
+ x_default_parameter (f, parms, Qborder_color, build_string ("black"),
+ "borderColor", "BorderColor", RES_TYPE_STRING);
+
+ /* Init faces before x_default_parameter is called for scroll-bar
+ parameters because that function calls x_set_scroll_bar_width,
+ which calls change_frame_size, which calls Fset_window_buffer,
+ which runs hooks, which call Fvertical_motion. At the end, we
+ end up in init_iterator with a null face cache, which should not
+ happen. */
+ init_frame_faces (f);
+
+ f->output_data.x->parent_desc = FRAME_X_DISPLAY_INFO (f)->root_window;
+
+ window_prompting = x_figure_window_size (f, parms, 0);
+
+ {
+ XSetWindowAttributes attrs;
+ unsigned long mask;
+
+ BLOCK_INPUT;
+ mask = CWBackPixel | CWOverrideRedirect | CWEventMask;
+ if (DoesSaveUnders (dpyinfo->screen))
+ mask |= CWSaveUnder;
+
+ /* Window managers look at the override-redirect flag to determine
+ whether or net to give windows a decoration (Xlib spec, chapter
+ 3.2.8). */
+ attrs.override_redirect = True;
+ attrs.save_under = True;
+ attrs.background_pixel = FRAME_BACKGROUND_PIXEL (f);
+ /* Arrange for getting MapNotify and UnmapNotify events. */
+ attrs.event_mask = StructureNotifyMask;
+ tip_window
+ = FRAME_X_WINDOW (f)
+ = XCreateWindow (FRAME_X_DISPLAY (f),
+ FRAME_X_DISPLAY_INFO (f)->root_window,
+ /* x, y, width, height */
+ 0, 0, 1, 1,
+ /* Border. */
+ 1,
+ CopyFromParent, InputOutput, CopyFromParent,
+ mask, &attrs);
+ UNBLOCK_INPUT;
+ }
+
+ x_make_gc (f);
+
+ x_default_parameter (f, parms, Qauto_raise, Qnil,
+ "autoRaise", "AutoRaiseLower", RES_TYPE_BOOLEAN);
+ x_default_parameter (f, parms, Qauto_lower, Qnil,
+ "autoLower", "AutoRaiseLower", RES_TYPE_BOOLEAN);
+ x_default_parameter (f, parms, Qcursor_type, Qbox,
+ "cursorType", "CursorType", RES_TYPE_SYMBOL);
+
+ /* Dimensions, especially FRAME_LINES (f), must be done via
change_frame_size.
+ Change will not be effected unless different from the current
+ FRAME_LINES (f). */
+ width = FRAME_COLS (f);
+ height = FRAME_LINES (f);
+ SET_FRAME_COLS (f, 0);
+ FRAME_LINES (f) = 0;
+ change_frame_size (f, height, width, 1, 0, 0);
+
+ /* Add `tooltip' frame parameter's default value. */
+ if (NILP (Fframe_parameter (frame, intern ("tooltip"))))
+ Fmodify_frame_parameters (frame, Fcons (Fcons (intern ("tooltip"), Qt),
+ Qnil));
+
+ /* Set up faces after all frame parameters are known. This call
+ also merges in face attributes specified for new frames.
+
+ Frame parameters may be changed if .Xdefaults contains
+ specifications for the default font. For example, if there is an
+ `Emacs.default.attributeBackground: pink', the `background-color'
+ attribute of the frame get's set, which let's the internal border
+ of the tooltip frame appear in pink. Prevent this. */
+ {
+ Lisp_Object bg = Fframe_parameter (frame, Qbackground_color);
+
+ /* Set tip_frame here, so that */
+ tip_frame = frame;
+ call1 (Qface_set_after_frame_default, frame);
+
+ if (!EQ (bg, Fframe_parameter (frame, Qbackground_color)))
+ Fmodify_frame_parameters (frame, Fcons (Fcons (Qbackground_color, bg),
+ Qnil));
+ }
+
+ f->no_split = 1;
+
+ UNGCPRO;
+
+ /* It is now ok to make the frame official even if we get an error
+ below. And the frame needs to be on Vframe_list or making it
+ visible won't work. */
+ Vframe_list = Fcons (frame, Vframe_list);
+
+ /* Now that the frame is official, it counts as a reference to
+ its display. */
+ FRAME_X_DISPLAY_INFO (f)->reference_count++;
+
+ /* Setting attributes of faces of the tooltip frame from resources
+ and similar will increment face_change_count, which leads to the
+ clearing of all current matrices. Since this isn't necessary
+ here, avoid it by resetting face_change_count to the value it
+ had before we created the tip frame. */
+ face_change_count = face_change_count_before;
+
+ /* Discard the unwind_protect. */
+ return unbind_to (count, frame);
+ }
+
+
+ /* Compute where to display tip frame F. PARMS is the list of frame
+ parameters for F. DX and DY are specified offsets from the current
+ location of the mouse. WIDTH and HEIGHT are the width and height
+ of the tooltip. Return coordinates relative to the root window of
+ the display in *ROOT_X, and *ROOT_Y. */
+
+ static void
+ compute_tip_xy (f, parms, dx, dy, width, height, root_x, root_y)
+ struct frame *f;
+ Lisp_Object parms, dx, dy;
+ int width, height;
+ int *root_x, *root_y;
+ {
+ Lisp_Object left, top;
+ int win_x, win_y;
+ Window root, child;
+ unsigned pmask;
+
+ /* User-specified position? */
+ left = Fcdr (Fassq (Qleft, parms));
+ top = Fcdr (Fassq (Qtop, parms));
+
+ /* Move the tooltip window where the mouse pointer is. Resize and
+ show it. */
+ if (!INTEGERP (left) || !INTEGERP (top))
+ {
+ BLOCK_INPUT;
+ XQueryPointer (FRAME_X_DISPLAY (f), FRAME_X_DISPLAY_INFO
(f)->root_window,
+ &root, &child, root_x, root_y, &win_x, &win_y, &pmask);
+ UNBLOCK_INPUT;
+ }
+
+ if (INTEGERP (top))
+ *root_y = XINT (top);
+ else if (*root_y + XINT (dy) - height < 0)
+ *root_y -= XINT (dy);
+ else
+ {
+ *root_y -= height;
+ *root_y += XINT (dy);
+ }
+
+ if (INTEGERP (left))
+ *root_x = XINT (left);
+ else if (*root_x + XINT (dx) + width <= FRAME_X_DISPLAY_INFO (f)->width)
+ /* It fits to the right of the pointer. */
+ *root_x += XINT (dx);
+ else if (width + XINT (dx) <= *root_x)
+ /* It fits to the left of the pointer. */
+ *root_x -= width + XINT (dx);
+ else
+ /* Put it left-justified on the screen--it ought to fit that way. */
+ *root_x = 0;
+ }
+
+
+ DEFUN ("x-show-tip", Fx_show_tip, Sx_show_tip, 1, 6, 0,
+ doc: /* Show STRING in a "tooltip" window on frame FRAME.
+ A tooltip window is a small X window displaying a string.
+
+ FRAME nil or omitted means use the selected frame.
+
+ PARMS is an optional list of frame parameters which can be used to
+ change the tooltip's appearance.
+
+ Automatically hide the tooltip after TIMEOUT seconds. TIMEOUT nil
+ means use the default timeout of 5 seconds.
+
+ If the list of frame parameters PARAMS contains a `left' parameters,
+ the tooltip is displayed at that x-position. Otherwise it is
+ displayed at the mouse position, with offset DX added (default is 5 if
+ DX isn't specified). Likewise for the y-position; if a `top' frame
+ parameter is specified, it determines the y-position of the tooltip
+ window, otherwise it is displayed at the mouse position, with offset
+ DY added (default is -10).
+
+ A tooltip's maximum size is specified by `x-max-tooltip-size'.
+ Text larger than the specified size is clipped. */)
+ (string, frame, parms, timeout, dx, dy)
+ Lisp_Object string, frame, parms, timeout, dx, dy;
+ {
+ struct frame *f;
+ struct window *w;
+ int root_x, root_y;
+ struct buffer *old_buffer;
+ struct text_pos pos;
+ int i, width, height;
+ struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
+ int old_windows_or_buffers_changed = windows_or_buffers_changed;
+ int count = SPECPDL_INDEX ();
+
+ specbind (Qinhibit_redisplay, Qt);
+
+ GCPRO4 (string, parms, frame, timeout);
+
+ CHECK_STRING (string);
+ f = check_x_frame (frame);
+ if (NILP (timeout))
+ timeout = make_number (5);
+ else
+ CHECK_NATNUM (timeout);
+
+ if (NILP (dx))
+ dx = make_number (5);
+ else
+ CHECK_NUMBER (dx);
+
+ if (NILP (dy))
+ dy = make_number (-10);
+ else
+ CHECK_NUMBER (dy);
+
+ if (NILP (last_show_tip_args))
+ last_show_tip_args = Fmake_vector (make_number (3), Qnil);
+
+ if (!NILP (tip_frame))
+ {
+ Lisp_Object last_string = AREF (last_show_tip_args, 0);
+ Lisp_Object last_frame = AREF (last_show_tip_args, 1);
+ Lisp_Object last_parms = AREF (last_show_tip_args, 2);
+
+ if (EQ (frame, last_frame)
+ && !NILP (Fequal (last_string, string))
+ && !NILP (Fequal (last_parms, parms)))
+ {
+ struct frame *f = XFRAME (tip_frame);
+
+ /* Only DX and DY have changed. */
+ if (!NILP (tip_timer))
+ {
+ Lisp_Object timer = tip_timer;
+ tip_timer = Qnil;
+ call1 (Qcancel_timer, timer);
+ }
+
+ BLOCK_INPUT;
+ compute_tip_xy (f, parms, dx, dy, FRAME_PIXEL_WIDTH (f),
+ FRAME_PIXEL_HEIGHT (f), &root_x, &root_y);
+ XMoveWindow (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ root_x, root_y);
+ UNBLOCK_INPUT;
+ goto start_timer;
+ }
+ }
+
+ /* Hide a previous tip, if any. */
+ Fx_hide_tip ();
+
+ ASET (last_show_tip_args, 0, string);
+ ASET (last_show_tip_args, 1, frame);
+ ASET (last_show_tip_args, 2, parms);
+
+ /* Add default values to frame parameters. */
+ if (NILP (Fassq (Qname, parms)))
+ parms = Fcons (Fcons (Qname, build_string ("tooltip")), parms);
+ if (NILP (Fassq (Qinternal_border_width, parms)))
+ parms = Fcons (Fcons (Qinternal_border_width, make_number (3)), parms);
+ if (NILP (Fassq (Qborder_width, parms)))
+ parms = Fcons (Fcons (Qborder_width, make_number (1)), parms);
+ if (NILP (Fassq (Qborder_color, parms)))
+ parms = Fcons (Fcons (Qborder_color, build_string ("lightyellow")),
parms);
+ if (NILP (Fassq (Qbackground_color, parms)))
+ parms = Fcons (Fcons (Qbackground_color, build_string ("lightyellow")),
+ parms);
+
+ /* Create a frame for the tooltip, and record it in the global
+ variable tip_frame. */
+ frame = x_create_tip_frame (FRAME_X_DISPLAY_INFO (f), parms, string);
+ f = XFRAME (frame);
+
+ /* Set up the frame's root window. */
+ w = XWINDOW (FRAME_ROOT_WINDOW (f));
+ w->left_col = w->top_line = make_number (0);
+
+ if (CONSP (Vx_max_tooltip_size)
+ && INTEGERP (XCAR (Vx_max_tooltip_size))
+ && XINT (XCAR (Vx_max_tooltip_size)) > 0
+ && INTEGERP (XCDR (Vx_max_tooltip_size))
+ && XINT (XCDR (Vx_max_tooltip_size)) > 0)
+ {
+ w->total_cols = XCAR (Vx_max_tooltip_size);
+ w->total_lines = XCDR (Vx_max_tooltip_size);
+ }
+ else
+ {
+ w->total_cols = make_number (80);
+ w->total_lines = make_number (40);
+ }
+
+ FRAME_TOTAL_COLS (f) = XINT (w->total_cols);
+ adjust_glyphs (f);
+ w->pseudo_window_p = 1;
+
+ /* Display the tooltip text in a temporary buffer. */
+ old_buffer = current_buffer;
+ set_buffer_internal_1 (XBUFFER (XWINDOW (FRAME_ROOT_WINDOW (f))->buffer));
+ current_buffer->truncate_lines = Qnil;
+ clear_glyph_matrix (w->desired_matrix);
+ clear_glyph_matrix (w->current_matrix);
+ SET_TEXT_POS (pos, BEGV, BEGV_BYTE);
+ try_window (FRAME_ROOT_WINDOW (f), pos);
+
+ /* Compute width and height of the tooltip. */
+ width = height = 0;
+ for (i = 0; i < w->desired_matrix->nrows; ++i)
+ {
+ struct glyph_row *row = &w->desired_matrix->rows[i];
+ struct glyph *last;
+ int row_width;
+
+ /* Stop at the first empty row at the end. */
+ if (!row->enabled_p || !row->displays_text_p)
+ break;
+
+ /* Let the row go over the full width of the frame. */
+ row->full_width_p = 1;
+
+ /* There's a glyph at the end of rows that is used to place
+ the cursor there. Don't include the width of this glyph. */
+ if (row->used[TEXT_AREA])
+ {
+ last = &row->glyphs[TEXT_AREA][row->used[TEXT_AREA] - 1];
+ row_width = row->pixel_width - last->pixel_width;
+ }
+ else
+ row_width = row->pixel_width;
+
+ height += row->height;
+ width = max (width, row_width);
+ }
+
+ /* Add the frame's internal border to the width and height the X
+ window should have. */
+ height += 2 * FRAME_INTERNAL_BORDER_WIDTH (f);
+ width += 2 * FRAME_INTERNAL_BORDER_WIDTH (f);
+
+ /* Move the tooltip window where the mouse pointer is. Resize and
+ show it. */
+ compute_tip_xy (f, parms, dx, dy, width, height, &root_x, &root_y);
+
+ BLOCK_INPUT;
+ XMoveResizeWindow (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+ root_x, root_y, width, height);
+ XMapRaised (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f));
+ UNBLOCK_INPUT;
+
+ /* Draw into the window. */
+ w->must_be_updated_p = 1;
+ update_single_window (w, 1);
+
+ /* Restore original current buffer. */
+ set_buffer_internal_1 (old_buffer);
+ windows_or_buffers_changed = old_windows_or_buffers_changed;
+
+ start_timer:
+ /* Let the tip disappear after timeout seconds. */
+ tip_timer = call3 (intern ("run-at-time"), timeout, Qnil,
+ intern ("x-hide-tip"));
+
+ UNGCPRO;
+ return unbind_to (count, Qnil);
+ }
+
+
+ DEFUN ("x-hide-tip", Fx_hide_tip, Sx_hide_tip, 0, 0, 0,
+ doc: /* Hide the current tooltip window, if there is any.
+ Value is t if tooltip was open, nil otherwise. */)
+ ()
+ {
+ int count;
+ Lisp_Object deleted, frame, timer;
+ struct gcpro gcpro1, gcpro2;
+
+ /* Return quickly if nothing to do. */
+ if (NILP (tip_timer) && NILP (tip_frame))
+ return Qnil;
+
+ frame = tip_frame;
+ timer = tip_timer;
+ GCPRO2 (frame, timer);
+ tip_frame = tip_timer = deleted = Qnil;
+
+ count = SPECPDL_INDEX ();
+ specbind (Qinhibit_redisplay, Qt);
+ specbind (Qinhibit_quit, Qt);
+
+ if (!NILP (timer))
+ call1 (Qcancel_timer, timer);
+
+ if (FRAMEP (frame))
+ {
+ Fdelete_frame (frame, Qnil);
+ deleted = Qt;
+
+ #ifdef USE_LUCID
+ /* Bloodcurdling hack alert: The Lucid menu bar widget's
+ redisplay procedure is not called when a tip frame over menu
+ items is unmapped. Redisplay the menu manually... */
+ {
+ struct frame *f = SELECTED_FRAME ();
+ Widget w = f->output_data.x->menubar_widget;
+ extern void xlwmenu_redisplay P_ ((Widget));
+
+ if (!DoesSaveUnders (FRAME_X_DISPLAY_INFO (f)->screen)
+ && w != NULL)
+ {
+ BLOCK_INPUT;
+ xlwmenu_redisplay (w);
+ UNBLOCK_INPUT;
+ }
+ }
+ #endif /* USE_LUCID */
+ }
+
+ UNGCPRO;
+ return unbind_to (count, deleted);
+ }
+
+
+
+ /***********************************************************************
+ File selection dialog
+ ***********************************************************************/
+
+ #ifdef USE_MOTIF
+
+ /* Callback for "OK" and "Cancel" on file selection dialog. */
+
+ static void
+ file_dialog_cb (widget, client_data, call_data)
+ Widget widget;
+ XtPointer call_data, client_data;
+ {
+ int *result = (int *) client_data;
+ XmAnyCallbackStruct *cb = (XmAnyCallbackStruct *) call_data;
+ *result = cb->reason;
+ }
+
+
+ /* Callback for unmapping a file selection dialog. This is used to
+ capture the case where a dialog is closed via a window manager's
+ closer button, for example. Using a XmNdestroyCallback didn't work
+ in this case. */
+
+ static void
+ file_dialog_unmap_cb (widget, client_data, call_data)
+ Widget widget;
+ XtPointer call_data, client_data;
+ {
+ int *result = (int *) client_data;
+ *result = XmCR_CANCEL;
+ }
+
+
+ DEFUN ("x-file-dialog", Fx_file_dialog, Sx_file_dialog, 2, 4, 0,
+ doc: /* Read file name, prompting with PROMPT in directory DIR.
+ Use a file selection dialog.
+ Select DEFAULT-FILENAME in the dialog's file selection box, if
+ specified. Don't let the user enter a file name in the file
+ selection dialog's entry field, if MUSTMATCH is non-nil. */)
+ (prompt, dir, default_filename, mustmatch)
+ Lisp_Object prompt, dir, default_filename, mustmatch;
+ {
+ int result;
+ struct frame *f = SELECTED_FRAME ();
+ Lisp_Object file = Qnil;
+ Widget dialog, text, list, help;
+ Arg al[10];
+ int ac = 0;
+ extern XtAppContext Xt_app_con;
+ XmString dir_xmstring, pattern_xmstring;
+ int count = SPECPDL_INDEX ();
+ struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
+
+ GCPRO5 (prompt, dir, default_filename, mustmatch, file);
+ CHECK_STRING (prompt);
+ CHECK_STRING (dir);
+
+ /* Prevent redisplay. */
+ specbind (Qinhibit_redisplay, Qt);
+
+ BLOCK_INPUT;
+
+ /* Create the dialog with PROMPT as title, using DIR as initial
+ directory and using "*" as pattern. */
+ dir = Fexpand_file_name (dir, Qnil);
+ dir_xmstring = XmStringCreateLocalized (SDATA (dir));
+ pattern_xmstring = XmStringCreateLocalized ("*");
+
+ XtSetArg (al[ac], XmNtitle, SDATA (prompt)); ++ac;
+ XtSetArg (al[ac], XmNdirectory, dir_xmstring); ++ac;
+ XtSetArg (al[ac], XmNpattern, pattern_xmstring); ++ac;
+ XtSetArg (al[ac], XmNresizePolicy, XmRESIZE_GROW); ++ac;
+ XtSetArg (al[ac], XmNdialogStyle, XmDIALOG_APPLICATION_MODAL); ++ac;
+ dialog = XmCreateFileSelectionDialog (f->output_data.x->widget,
+ "fsb", al, ac);
+ XmStringFree (dir_xmstring);
+ XmStringFree (pattern_xmstring);
+
+ /* Add callbacks for OK and Cancel. */
+ XtAddCallback (dialog, XmNokCallback, file_dialog_cb,
+ (XtPointer) &result);
+ XtAddCallback (dialog, XmNcancelCallback, file_dialog_cb,
+ (XtPointer) &result);
+ XtAddCallback (dialog, XmNunmapCallback, file_dialog_unmap_cb,
+ (XtPointer) &result);
+
+ /* Disable the help button since we can't display help. */
+ help = XmFileSelectionBoxGetChild (dialog, XmDIALOG_HELP_BUTTON);
+ XtSetSensitive (help, False);
+
+ /* Mark OK button as default. */
+ XtVaSetValues (XmFileSelectionBoxGetChild (dialog, XmDIALOG_OK_BUTTON),
+ XmNshowAsDefault, True, NULL);
+
+ /* If MUSTMATCH is non-nil, disable the file entry field of the
+ dialog, so that the user must select a file from the files list
+ box. We can't remove it because we wouldn't have a way to get at
+ the result file name, then. */
+ text = XmFileSelectionBoxGetChild (dialog, XmDIALOG_TEXT);
+ if (!NILP (mustmatch))
+ {
+ Widget label;
+ label = XmFileSelectionBoxGetChild (dialog, XmDIALOG_SELECTION_LABEL);
+ XtSetSensitive (text, False);
+ XtSetSensitive (label, False);
+ }
+
+ /* Manage the dialog, so that list boxes get filled. */
+ XtManageChild (dialog);
+
+ /* Select DEFAULT_FILENAME in the files list box. DEFAULT_FILENAME
+ must include the path for this to work. */
+ list = XmFileSelectionBoxGetChild (dialog, XmDIALOG_LIST);
+ if (STRINGP (default_filename))
+ {
+ XmString default_xmstring;
+ int item_pos;
+
+ default_xmstring
+ = XmStringCreateLocalized (SDATA (default_filename));
+
+ if (!XmListItemExists (list, default_xmstring))
+ {
+ /* Add a new item if DEFAULT_FILENAME is not in the list. */
+ XmListAddItem (list, default_xmstring, 0);
+ item_pos = 0;
+ }
+ else
+ item_pos = XmListItemPos (list, default_xmstring);
+ XmStringFree (default_xmstring);
+
+ /* Select the item and scroll it into view. */
+ XmListSelectPos (list, item_pos, True);
+ XmListSetPos (list, item_pos);
+ }
+
+ /* Process events until the user presses Cancel or OK. */
+ result = 0;
+ while (result == 0)
+ {
+ XEvent event;
+ XtAppNextEvent (Xt_app_con, &event);
+ (void) x_dispatch_event (&event, FRAME_X_DISPLAY (f) );
+ }
+
+ /* Get the result. */
+ if (result == XmCR_OK)
+ {
+ XmString text;
+ String data;
+
+ XtVaGetValues (dialog, XmNtextString, &text, NULL);
+ XmStringGetLtoR (text, XmFONTLIST_DEFAULT_TAG, &data);
+ XmStringFree (text);
+ file = build_string (data);
+ XtFree (data);
+ }
+ else
+ file = Qnil;
+
+ /* Clean up. */
+ XtUnmanageChild (dialog);
+ XtDestroyWidget (dialog);
+ UNBLOCK_INPUT;
+ UNGCPRO;
+
+ /* Make "Cancel" equivalent to C-g. */
+ if (NILP (file))
+ Fsignal (Qquit, Qnil);
+
+ return unbind_to (count, file);
+ }
+
+ #endif /* USE_MOTIF */
+
+ #ifdef USE_GTK
+
+ DEFUN ("x-file-dialog", Fx_file_dialog, Sx_file_dialog, 2, 4, 0,
+ "Read file name, prompting with PROMPT in directory DIR.\n\
+ Use a file selection dialog.\n\
+ Select DEFAULT-FILENAME in the dialog's file selection box, if\n\
+ specified. Don't let the user enter a file name in the file\n\
+ selection dialog's entry field, if MUSTMATCH is non-nil.")
+ (prompt, dir, default_filename, mustmatch)
+ Lisp_Object prompt, dir, default_filename, mustmatch;
+ {
+ FRAME_PTR f = SELECTED_FRAME ();
+ char *fn;
+ Lisp_Object file = Qnil;
+ int count = specpdl_ptr - specpdl;
+ struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
+ char *cdef_file;
+ char *cprompt;
+
+ GCPRO5 (prompt, dir, default_filename, mustmatch, file);
+ CHECK_STRING (prompt);
+ CHECK_STRING (dir);
+
+ /* Prevent redisplay. */
+ specbind (Qinhibit_redisplay, Qt);
+
+ BLOCK_INPUT;
+
+ if (STRINGP (default_filename))
+ cdef_file = SDATA (default_filename);
+ else
+ cdef_file = SDATA (dir);
+
+ fn = xg_get_file_name (f, SDATA (prompt), cdef_file, ! NILP (mustmatch));
+
+ if (fn)
+ {
+ file = build_string (fn);
+ xfree (fn);
+ }
+
+ UNBLOCK_INPUT;
+ UNGCPRO;
+
+ /* Make "Cancel" equivalent to C-g. */
+ if (NILP (file))
+ Fsignal (Qquit, Qnil);
+
+ return unbind_to (count, file);
+ }
+
+ #endif /* USE_GTK */
+
+
+ /***********************************************************************
+ Keyboard
+ ***********************************************************************/
+
+ #ifdef HAVE_XKBGETKEYBOARD
+ #include <X11/XKBlib.h>
+ #include <X11/keysym.h>
+ #endif
+
+ DEFUN ("x-backspace-delete-keys-p", Fx_backspace_delete_keys_p,
+ Sx_backspace_delete_keys_p, 0, 1, 0,
+ doc: /* Check if both Backspace and Delete keys are on the keyboard of
FRAME.
+ FRAME nil means use the selected frame.
+ Value is t if we know that both keys are present, and are mapped to the
+ usual X keysyms. */)
+ (frame)
+ Lisp_Object frame;
+ {
+ #ifdef HAVE_XKBGETKEYBOARD
+ XkbDescPtr kb;
+ struct frame *f = check_x_frame (frame);
+ Display *dpy = FRAME_X_DISPLAY (f);
+ Lisp_Object have_keys;
+ int major, minor, op, event, error;
+
+ BLOCK_INPUT;
+
+ /* Check library version in case we're dynamically linked. */
+ major = XkbMajorVersion;
+ minor = XkbMinorVersion;
+ if (!XkbLibraryVersion (&major, &minor))
+ {
+ UNBLOCK_INPUT;
+ return Qnil;
+ }
+
+ /* Check that the server supports XKB. */
+ major = XkbMajorVersion;
+ minor = XkbMinorVersion;
+ if (!XkbQueryExtension (dpy, &op, &event, &error, &major, &minor))
+ {
+ UNBLOCK_INPUT;
+ return Qnil;
+ }
+
+ have_keys = Qnil;
+ kb = XkbGetMap (dpy, XkbAllMapComponentsMask, XkbUseCoreKbd);
+ if (kb)
+ {
+ int delete_keycode = 0, backspace_keycode = 0, i;
+
+ if (XkbGetNames (dpy, XkbAllNamesMask, kb) == Success)
+ {
+ for (i = kb->min_key_code;
+ (i < kb->max_key_code
+ && (delete_keycode == 0 || backspace_keycode == 0));
+ ++i)
+ {
+ /* The XKB symbolic key names can be seen most easily in
+ the PS file generated by `xkbprint -label name
+ $DISPLAY'. */
+ if (bcmp ("DELE", kb->names->keys[i].name, 4) == 0)
+ delete_keycode = i;
+ else if (bcmp ("BKSP", kb->names->keys[i].name, 4) == 0)
+ backspace_keycode = i;
+ }
+
+ XkbFreeNames (kb, 0, True);
+ }
+
+ XkbFreeClientMap (kb, 0, True);
+
+ if (delete_keycode
+ && backspace_keycode
+ && XKeysymToKeycode (dpy, XK_Delete) == delete_keycode
+ && XKeysymToKeycode (dpy, XK_BackSpace) == backspace_keycode)
+ have_keys = Qt;
+ }
+ UNBLOCK_INPUT;
+ return have_keys;
+ #else /* not HAVE_XKBGETKEYBOARD */
+ return Qnil;
+ #endif /* not HAVE_XKBGETKEYBOARD */
+ }
+
+
+
+ /***********************************************************************
+ Initialization
+ ***********************************************************************/
+
+ /* Keep this list in the same order as frame_parms in frame.c.
+ Use 0 for unsupported frame parameters. */
+
+ frame_parm_handler x_frame_parm_handlers[] =
+ {
+ x_set_autoraise,
+ x_set_autolower,
+ x_set_background_color,
+ x_set_border_color,
+ x_set_border_width,
+ x_set_cursor_color,
+ x_set_cursor_type,
+ x_set_font,
+ x_set_foreground_color,
+ x_set_icon_name,
+ x_set_icon_type,
+ x_set_internal_border_width,
+ x_set_menu_bar_lines,
+ x_set_mouse_color,
+ x_explicitly_set_name,
+ x_set_scroll_bar_width,
+ x_set_title,
+ x_set_unsplittable,
+ x_set_vertical_scroll_bars,
+ x_set_visibility,
+ x_set_tool_bar_lines,
+ x_set_scroll_bar_foreground,
+ x_set_scroll_bar_background,
+ x_set_screen_gamma,
+ x_set_line_spacing,
+ x_set_fringe_width,
+ x_set_fringe_width,
+ x_set_wait_for_wm,
+ x_set_fullscreen,
+ };
+
+ void
+ syms_of_xfns ()
+ {
+ /* This is zero if not using X windows. */
+ x_in_use = 0;
+
+ /* The section below is built by the lisp expression at the top of the file,
+ just above where these variables are declared. */
+ /*&&& init symbols here &&&*/
+ Qnone = intern ("none");
+ staticpro (&Qnone);
+ Qsuppress_icon = intern ("suppress-icon");
+ staticpro (&Qsuppress_icon);
+ Qundefined_color = intern ("undefined-color");
+ staticpro (&Qundefined_color);
+ Qcenter = intern ("center");
+ staticpro (&Qcenter);
+ Qcompound_text = intern ("compound-text");
+ staticpro (&Qcompound_text);
+ Qcancel_timer = intern ("cancel-timer");
+ staticpro (&Qcancel_timer);
+ /* This is the end of symbol initialization. */
+
+ /* Text property `display' should be nonsticky by default. */
+ Vtext_property_default_nonsticky
+ = Fcons (Fcons (Qdisplay, Qt), Vtext_property_default_nonsticky);
+
+
+ Qlaplace = intern ("laplace");
+ staticpro (&Qlaplace);
+ Qemboss = intern ("emboss");
+ staticpro (&Qemboss);
+ Qedge_detection = intern ("edge-detection");
+ staticpro (&Qedge_detection);
+ Qheuristic = intern ("heuristic");
+ staticpro (&Qheuristic);
+ QCmatrix = intern (":matrix");
+ staticpro (&QCmatrix);
+ QCcolor_adjustment = intern (":color-adjustment");
+ staticpro (&QCcolor_adjustment);
+ QCmask = intern (":mask");
+ staticpro (&QCmask);
+
+ Fput (Qundefined_color, Qerror_conditions,
+ Fcons (Qundefined_color, Fcons (Qerror, Qnil)));
+ Fput (Qundefined_color, Qerror_message,
+ build_string ("Undefined color"));
+
+ DEFVAR_BOOL ("cross-disabled-images", &cross_disabled_images,
+ doc: /* Non-nil means always draw a cross over disabled images.
+ Disabled images are those having an `:conversion disabled' property.
+ A cross is always drawn on black & white displays. */);
+ cross_disabled_images = 0;
+
+ DEFVAR_LISP ("x-bitmap-file-path", &Vx_bitmap_file_path,
+ doc: /* List of directories to search for window system bitmap files.
*/);
+ Vx_bitmap_file_path = decode_env_path ((char *) 0, PATH_BITMAPS);
+
+ DEFVAR_LISP ("x-pointer-shape", &Vx_pointer_shape,
+ doc: /* The shape of the pointer when over text.
+ Changing the value does not affect existing frames
+ unless you set the mouse color. */);
+ Vx_pointer_shape = Qnil;
+
+ #if 0 /* This doesn't really do anything. */
+ DEFVAR_LISP ("x-nontext-pointer-shape", &Vx_nontext_pointer_shape,
+ doc: /* The shape of the pointer when not over text.
+ This variable takes effect when you create a new frame
+ or when you set the mouse color. */);
+ #endif
+ Vx_nontext_pointer_shape = Qnil;
+
+ DEFVAR_LISP ("x-hourglass-pointer-shape", &Vx_hourglass_pointer_shape,
+ doc: /* The shape of the pointer when Emacs is busy.
+ This variable takes effect when you create a new frame
+ or when you set the mouse color. */);
+ Vx_hourglass_pointer_shape = Qnil;
+
+ DEFVAR_BOOL ("display-hourglass", &display_hourglass_p,
+ doc: /* Non-zero means Emacs displays an hourglass pointer on window
systems. */);
+ display_hourglass_p = 1;
+
+ DEFVAR_LISP ("hourglass-delay", &Vhourglass_delay,
+ doc: /* *Seconds to wait before displaying an hourglass pointer.
+ Value must be an integer or float. */);
+ Vhourglass_delay = make_number (DEFAULT_HOURGLASS_DELAY);
+
+ #if 0 /* This doesn't really do anything. */
+ DEFVAR_LISP ("x-mode-pointer-shape", &Vx_mode_pointer_shape,
+ doc: /* The shape of the pointer when over the mode line.
+ This variable takes effect when you create a new frame
+ or when you set the mouse color. */);
+ #endif
+ Vx_mode_pointer_shape = Qnil;
+
+ DEFVAR_LISP ("x-sensitive-text-pointer-shape",
+ &Vx_sensitive_text_pointer_shape,
+ doc: /* The shape of the pointer when over mouse-sensitive text.
+ This variable takes effect when you create a new frame
+ or when you set the mouse color. */);
+ Vx_sensitive_text_pointer_shape = Qnil;
+
+ DEFVAR_LISP ("x-window-horizontal-drag-cursor",
+ &Vx_window_horizontal_drag_shape,
+ doc: /* Pointer shape to use for indicating a window can be dragged
horizontally.
+ This variable takes effect when you create a new frame
+ or when you set the mouse color. */);
+ Vx_window_horizontal_drag_shape = Qnil;
+
+ DEFVAR_LISP ("x-cursor-fore-pixel", &Vx_cursor_fore_pixel,
+ doc: /* A string indicating the foreground color of the cursor box. */);
+ Vx_cursor_fore_pixel = Qnil;
+
+ DEFVAR_LISP ("x-max-tooltip-size", &Vx_max_tooltip_size,
+ doc: /* Maximum size for tooltips. Value is a pair (COLUMNS . ROWS).
+ Text larger than this is clipped. */);
+ Vx_max_tooltip_size = Fcons (make_number (80), make_number (40));
+
+ DEFVAR_LISP ("x-no-window-manager", &Vx_no_window_manager,
+ doc: /* Non-nil if no X window manager is in use.
+ Emacs doesn't try to figure this out; this is always nil
+ unless you set it to something else. */);
+ /* We don't have any way to find this out, so set it to nil
+ and maybe the user would like to set it to t. */
+ Vx_no_window_manager = Qnil;
+
+ DEFVAR_LISP ("x-pixel-size-width-font-regexp",
+ &Vx_pixel_size_width_font_regexp,
+ doc: /* Regexp matching a font name whose width is the same as
`PIXEL_SIZE'.
+
+ Since Emacs gets width of a font matching with this regexp from
+ PIXEL_SIZE field of the name, font finding mechanism gets faster for
+ such a font. This is especially effective for such large fonts as
+ Chinese, Japanese, and Korean. */);
+ Vx_pixel_size_width_font_regexp = Qnil;
+
+ DEFVAR_LISP ("image-cache-eviction-delay", &Vimage_cache_eviction_delay,
+ doc: /* Time after which cached images are removed from the cache.
+ When an image has not been displayed this many seconds, remove it
+ from the image cache. Value must be an integer or nil with nil
+ meaning don't clear the cache. */);
+ Vimage_cache_eviction_delay = make_number (30 * 60);
+
+ #ifdef USE_X_TOOLKIT
+ Fprovide (intern ("x-toolkit"), Qnil);
+ #ifdef USE_MOTIF
+ Fprovide (intern ("motif"), Qnil);
+
+ DEFVAR_LISP ("motif-version-string", &Vmotif_version_string,
+ doc: /* Version info for LessTif/Motif. */);
+ Vmotif_version_string = build_string (XmVERSION_STRING);
+ #endif /* USE_MOTIF */
+ #endif /* USE_X_TOOLKIT */
+
+ /* X window properties. */
+ defsubr (&Sx_change_window_property);
+ defsubr (&Sx_delete_window_property);
+ defsubr (&Sx_window_property);
+
+ defsubr (&Sxw_display_color_p);
+ defsubr (&Sx_display_grayscale_p);
+ defsubr (&Sxw_color_defined_p);
+ defsubr (&Sxw_color_values);
+ defsubr (&Sx_server_max_request_size);
+ defsubr (&Sx_server_vendor);
+ defsubr (&Sx_server_version);
+ defsubr (&Sx_display_pixel_width);
+ defsubr (&Sx_display_pixel_height);
+ defsubr (&Sx_display_mm_width);
+ defsubr (&Sx_display_mm_height);
+ defsubr (&Sx_display_screens);
+ defsubr (&Sx_display_planes);
+ defsubr (&Sx_display_color_cells);
+ defsubr (&Sx_display_visual_class);
+ defsubr (&Sx_display_backing_store);
+ defsubr (&Sx_display_save_under);
+ defsubr (&Sx_create_frame);
+ defsubr (&Sx_open_connection);
+ defsubr (&Sx_close_connection);
+ defsubr (&Sx_display_list);
+ defsubr (&Sx_synchronize);
+ defsubr (&Sx_focus_frame);
+ defsubr (&Sx_backspace_delete_keys_p);
+
+ /* Setting callback functions for fontset handler. */
+ get_font_info_func = x_get_font_info;
+
+ #if 0 /* This function pointer doesn't seem to be used anywhere.
+ And the pointer assigned has the wrong type, anyway. */
+ list_fonts_func = x_list_fonts;
+ #endif
+
+ load_font_func = x_load_font;
+ find_ccl_program_func = x_find_ccl_program;
+ query_font_func = x_query_font;
+ set_frame_fontset_func = x_set_font;
+ check_window_system_func = check_x;
+
+ /* Images. */
+ Qxbm = intern ("xbm");
+ staticpro (&Qxbm);
+ QCconversion = intern (":conversion");
+ staticpro (&QCconversion);
+ QCheuristic_mask = intern (":heuristic-mask");
+ staticpro (&QCheuristic_mask);
+ QCcolor_symbols = intern (":color-symbols");
+ staticpro (&QCcolor_symbols);
+ QCascent = intern (":ascent");
+ staticpro (&QCascent);
+ QCmargin = intern (":margin");
+ staticpro (&QCmargin);
+ QCrelief = intern (":relief");
+ staticpro (&QCrelief);
+ Qpostscript = intern ("postscript");
+ staticpro (&Qpostscript);
+ QCloader = intern (":loader");
+ staticpro (&QCloader);
+ QCbounding_box = intern (":bounding-box");
+ staticpro (&QCbounding_box);
+ QCpt_width = intern (":pt-width");
+ staticpro (&QCpt_width);
+ QCpt_height = intern (":pt-height");
+ staticpro (&QCpt_height);
+ QCindex = intern (":index");
+ staticpro (&QCindex);
+ Qpbm = intern ("pbm");
+ staticpro (&Qpbm);
+
+ #if HAVE_XPM
+ Qxpm = intern ("xpm");
+ staticpro (&Qxpm);
+ #endif
+
+ #if HAVE_JPEG
+ Qjpeg = intern ("jpeg");
+ staticpro (&Qjpeg);
+ #endif
+
+ #if HAVE_TIFF
+ Qtiff = intern ("tiff");
+ staticpro (&Qtiff);
+ #endif
+
+ #if HAVE_GIF
+ Qgif = intern ("gif");
+ staticpro (&Qgif);
+ #endif
+
+ #if HAVE_PNG
+ Qpng = intern ("png");
+ staticpro (&Qpng);
+ #endif
+
+ defsubr (&Sclear_image_cache);
+ defsubr (&Simage_size);
+ defsubr (&Simage_mask_p);
+
+ hourglass_atimer = NULL;
+ hourglass_shown_p = 0;
+
+ defsubr (&Sx_show_tip);
+ defsubr (&Sx_hide_tip);
+ tip_timer = Qnil;
+ staticpro (&tip_timer);
+ tip_frame = Qnil;
+ staticpro (&tip_frame);
+
+ last_show_tip_args = Qnil;
+ staticpro (&last_show_tip_args);
+
+ #ifdef USE_MOTIF
+ defsubr (&Sx_file_dialog);
+ #endif
+ }
+
+
+ void
+ init_xfns ()
+ {
+ image_types = NULL;
+ Vimage_types = Qnil;
+
+ define_image_type (&xbm_type);
+ define_image_type (&gs_type);
+ define_image_type (&pbm_type);
+
+ #if HAVE_XPM
+ define_image_type (&xpm_type);
+ #endif
+
+ #if HAVE_JPEG
+ define_image_type (&jpeg_type);
+ #endif
+
+ #if HAVE_TIFF
+ define_image_type (&tiff_type);
+ #endif
+
+ #if HAVE_GIF
+ define_image_type (&gif_type);
+ #endif
+
+ #if HAVE_PNG
+ define_image_type (&png_type);
+ #endif
+ }
+
+ #endif /* HAVE_X_WINDOWS */
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