If available, use Xfixes extension to do pointer blanking.

* configure.ac (HAVE_XFIXES): Define if available.
(XFIXES_CFLAGS, XFIXES_LIBS): New AC_SUBSTs.
* src/Makefile.in (XFIXES_CFLAGS, XFIXES_LIBS): New var.
* src/xfns.c (x_set_mouse_color): Do not call make_invisible_cursor here.
(make_invisible_cursor): Move to...
* src/xterm.c (make_invisible_cursor): ...here.
(x_probe_xfixes_extension, xfixes_toggle_visible_pointer)
(x_toggle_visible_pointer, x_setup_pointer_blanking): New functions.
(x_term_init): Call to x_setup_pointer_blanking.
(XTtoggle_invisible_pointer): Use blanking specific to this display.
* src/xterm.h (struct x_display_info): New member toggle_visible_pointer.

1 files changed, 5 insertions, 1 deletions

diff --git a/src/xterm.h b/src/xterm.h
index 90d2e131717..3e79de10976 100644
--- a/src/xterm.h
+++ b/src/xterm.h
@@ -174,9 +174,13 @@ struct x_display_info
   /* The cursor to use for vertical scroll bars.  */
   Cursor vertical_scroll_bar_cursor;
 
-  /* The invisible cursor used for pointer blanking.  */
+  /* The invisible cursor used for pointer blanking.
+     Unused if this display supports Xfixes extension.  */
   Cursor invisible_cursor;
 
+  /* Function used to toggle pointer visibility on this display.  */
+  void (*toggle_visible_pointer) (struct frame *, bool);
+
 #ifdef USE_GTK
   /* The GDK cursor for scroll bars and popup menus.  */
   GdkCursor *xg_cursor;