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bug#8992: 23.3.50; Wrong mouse highlight background ascent and height


From: YAMAMOTO Mitsuharu
Subject: bug#8992: 23.3.50; Wrong mouse highlight background ascent and height
Date: Mon, 04 Jul 2011 08:42:37 +0900
User-agent: Wanderlust/2.14.0 (Africa) SEMI/1.14.6 (Maruoka) FLIM/1.14.8 (Shij┼Ź) APEL/10.6 Emacs/22.3 (sparc-sun-solaris2.8) MULE/5.0 (SAKAKI)

Steps to reproduce:

  1. $ emacs -q -fn courier
  2. Move the mouse pointer over "Emacs Tutorial" in the splash screen.

Result:

  Mouse highlight does not fill the whole background (see the first
  attachment).

The patch below seems to work (see the second attachment).  I think
colors should be extracted from s->face, but font metrics should be
obtained from s->font.

                                     YAMAMOTO Mitsuharu
                                address@hidden

=== modified file 'src/xftfont.c'
*** src/xftfont.c       2011-02-02 02:15:29 +0000
--- src/xftfont.c       2011-07-03 07:03:15 +0000
***************
*** 689,695 ****
  
    if (with_background)
      XftDrawRect (xft_draw, &bg,
!                x, y - face->font->ascent, s->width, face->font->height);
    code = alloca (sizeof (FT_UInt) * len);
    for (i = 0; i < len; i++)
      code[i] = ((XCHAR2B_BYTE1 (s->char2b + from + i) << 8)
--- 689,695 ----
  
    if (with_background)
      XftDrawRect (xft_draw, &bg,
!                x, y - s->font->ascent, s->width, s->font->height);
    code = alloca (sizeof (FT_UInt) * len);
    for (i = 0; i < len; i++)
      code[i] = ((XCHAR2B_BYTE1 (s->char2b + from + i) << 8)


If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
For information about debugging Emacs, please read the file
/home/mituharu/src/bzr/emacs/emacs-23/etc/DEBUG.


In GNU Emacs 23.3.50.1 (i686-pc-linux-gnu, GTK+ Version 2.24.4)
 of 2011-07-04 on mituharu-MacBookAir
Windowing system distributor `The X.Org Foundation', version 11.0.11001000
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: ja_JP.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Fundamental

Minor modes in effect:
  tooltip-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  blink-cursor-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <menu-bar> <help-menu> 
<send-emacs-bug-report>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.

Load-path shadows:
None found.

Features:
(shadow sort mail-extr message sendmail regexp-opt ecomplete rfc822 mml
easymenu mml-sec password-cache mm-decode mm-bodies mm-encode mailcap
mail-parse rfc2231 rfc2047 rfc2045 qp ietf-drums mailabbrev nnheader
gnus-util netrc time-date mm-util mail-prsvr gmm-utils wid-edit
mailheader canlock sha1 hex-util hashcash mail-utils emacsbug japan-util
tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd
font-setting tool-bar dnd fontset image fringe lisp-mode register page
menu-bar rfn-eshadow timer select scroll-bar mldrag mouse jit-lock
font-lock syntax facemenu font-core frame cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew
greek romanian slovak czech european ethiopic indian cyrillic chinese
case-table epa-hook jka-cmpr-hook help simple abbrev loaddefs button
minibuffer faces cus-face files text-properties overlay md5 base64
format env code-pages mule custom widget hashtable-print-readable
backquote make-network-process dbusbind system-font-setting
font-render-setting gtk x-toolkit x multi-tty emacs)

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