[gnome-shell] shell-global: Don't connect to the stage's paint signal

[Adel Gadllah <agadllah src gnome org>]

commit 071a4e5f83db6a0e0ab01a36110e7bf6bbbaca2c
Author: Adel Gadllah <adel gadllah gmail com>
Date:   Sat Mar 2 13:25:37 2013 +0100

    shell-global: Don't connect to the stage's paint signal
    
    Doing so causes useless full stage redraws and breaks culling
    as clutter cannot know how the signal handler affects painting.
    
    So use clutter_threads_add_repaint_func_full instead.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=694988

 src/shell-global.c |   17 +++++++++--------
 1 files changed, 9 insertions(+), 8 deletions(-)
---
diff --git a/src/shell-global.c b/src/shell-global.c
index 6f20e8c..7e091db 100644
--- a/src/shell-global.c
+++ b/src/shell-global.c
@@ -803,16 +803,14 @@ global_stage_notify_height (GObject    *gobject,
 }
 
 static void
-global_stage_before_paint (ClutterStage *stage,
-                           ShellGlobal  *global)
+global_stage_before_paint (gpointer data)
 {
   shell_perf_log_event (shell_perf_log_get_default (),
                         "clutter.stagePaintStart");
 }
 
 static void
-global_stage_after_paint (ClutterStage *stage,
-                          ShellGlobal  *global)
+global_stage_after_paint (gpointer data)
 {
   shell_perf_log_event (shell_perf_log_get_default (),
                         "clutter.stagePaintDone");
@@ -939,10 +937,13 @@ _shell_global_set_plugin (ShellGlobal *global,
   g_signal_connect (global->stage, "notify::height",
                     G_CALLBACK (global_stage_notify_height), global);
 
-  g_signal_connect (global->stage, "paint",
-                    G_CALLBACK (global_stage_before_paint), global);
-  g_signal_connect_after (global->stage, "paint",
-                          G_CALLBACK (global_stage_after_paint), global);
+  clutter_threads_add_repaint_func_full (CLUTTER_REPAINT_FLAGS_PRE_PAINT,
+                                         (GSourceFunc) global_stage_before_paint,
+                                         NULL, NULL);
+
+  clutter_threads_add_repaint_func_full (CLUTTER_REPAINT_FLAGS_POST_PAINT,
+                                         (GSourceFunc) global_stage_after_paint,
+                                         NULL, NULL);
 
   shell_perf_log_define_event (shell_perf_log_get_default(),
                                "clutter.stagePaintStart",