Bug 153567 – Repaint glitches in widgets

2008-07-21  Cody Russell  <bratsche@gnome.org>

        Bug 153567 – Repaint glitches in widgets

        * gdk/win32/gdkevents-win32.c: Set a sync timer when
        we receive WM_SYNCPAINT, and RedrawWindow() once
        the timer expires.


svn path=/trunk/; revision=20881

2 files changed, 36 insertions, 3 deletions

diff --git a/ChangeLog b/ChangeLog
index 57b20ed61..3ff3e8ebd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2008-07-21  Cody Russell  <bratsche@gnome.org>
+
+	Bug 153567 – Repaint glitches in widgets
+
+	* gdk/win32/gdkevents-win32.c: Set a sync timer when
+	we receive WM_SYNCPAINT, and RedrawWindow() once
+	the timer expires.
+
 2008-07-21  Michael Natterer  <mitch@imendio.com>
 
 	* gtk/gtktoolbar.c (gtk_toolbar_class_init): use the simpler
diff --git a/gdk/win32/gdkevents-win32.c b/gdk/win32/gdkevents-win32.c
index 6633f5920..6e3565469 100644
--- a/gdk/win32/gdkevents-win32.c
+++ b/gdk/win32/gdkevents-win32.c
@@ -139,6 +139,7 @@ static HKL latin_locale = NULL;
 
 static gboolean in_ime_composition = FALSE;
 static UINT     modal_timer;
+static UINT     sync_timer = 0;
 
 static int debug_indent = 0;
 
@@ -2031,14 +2032,31 @@ handle_stuff_while_moving_or_resizing (void)
 
 static VOID CALLBACK
 modal_timer_proc (HWND     hwnd,
-		   UINT     msg,
-		   UINT     id,
-		   DWORD    time)
+		  UINT     msg,
+		  UINT     id,
+		  DWORD    time)
 {
   if (_sizemove_in_progress)
     handle_stuff_while_moving_or_resizing ();
 }
 
+static VOID CALLBACK
+sync_timer_proc (HWND hwnd,
+		 UINT msg,
+		 UINT id,
+		 DWORD time)
+{
+  MSG message;
+  if (PeekMessageW (&message, hwnd, WM_PAINT, WM_PAINT, PM_REMOVE))
+    {
+      return;
+    }
+
+  RedrawWindow (hwnd, NULL, NULL, RDW_INVALIDATE|RDW_UPDATENOW|RDW_ALLCHILDREN);
+
+  KillTimer (hwnd, sync_timer);
+}
+
 static void
 handle_display_change (void)
 {
@@ -2824,6 +2842,13 @@ gdk_event_translate (MSG  *msg,
       *ret_valp = 1;
       break;
 
+    case WM_SYNCPAINT:
+
+      sync_timer = SetTimer (GDK_WINDOW_HWND (window),
+			     1,
+			     200, sync_timer_proc);
+      break;
+
     case WM_PAINT:
       handle_wm_paint (msg, window, FALSE, NULL);
       break;