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bug#20677: tooltips generate garbage


From: Angelo Graziosi
Subject: bug#20677: tooltips generate garbage
Date: Wed, 03 Jun 2015 15:51:49 +0200
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0



Il 03/06/2015 09:01, YAMAMOTO Mitsuharu ha scritto:
On Tue, 02 Jun 2015 22:08:59 +0300, Eli Zaretskii <address@hidden> said:

Can you see whether Emacs gets an expose event when the tip pops down?

Sorry, you've found my limit in understanding.  How can check that?

The function expose_frame (defined in xdisp.c) should be called when
such an event comes in.

Could those who see this problem try the following patches, one at a
time?

Here (GNU/Linux Mint 17.1 Mate 64bit) both patches seem to work fine!

 Ciao,
   Angelo.


[FIRST]
diff --git a/src/xterm.c b/src/xterm.c
index 25c0d87..691ede5 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -7668,7 +7668,7 @@ handle_one_xevent (struct x_display_info *dpyinfo,
              }
            else
            {
-#if defined (USE_GTK) && ! defined (HAVE_GTK3) && ! defined (USE_CAIRO)
+#ifdef USE_GTK
              /* This seems to be needed for GTK 2.6 and later, see
                 http://debbugs.gnu.org/cgi/bugreport.cgi?bug=15398.  */
              x_clear_area (f,


[SECOND]
diff --git a/src/xterm.c b/src/xterm.c
index 25c0d87..32d4d3a 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -7668,12 +7668,14 @@ handle_one_xevent (struct x_display_info *dpyinfo,
              }
            else
            {
-#if defined (USE_GTK) && ! defined (HAVE_GTK3) && ! defined (USE_CAIRO)
+#ifdef USE_GTK
              /* This seems to be needed for GTK 2.6 and later, see
                 http://debbugs.gnu.org/cgi/bugreport.cgi?bug=15398.  */
-             x_clear_area (f,
-                           event->xexpose.x, event->xexpose.y,
-                           event->xexpose.width, event->xexpose.height);
+             x_clear_area1 (event->xexpose.display,
+                            event->xexpose.window,
+                            event->xexpose.x, event->xexpose.y,
+                            event->xexpose.width, event->xexpose.height,
+                            False);
  #endif
              expose_frame (f, event->xexpose.x, event->xexpose.y,
                            event->xexpose.width, event->xexpose.height);






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