[gtk+/touch-for-3.4-2: 33/44] gdk: Have touch grabs behave like the implicit grab wrt crossing events

[Matthias Clasen <matthiasc src gnome org>]

commit 22c4b27fece0d2517a0494fa4bd2766f2dae3f2e
Author: Carlos Garnacho <carlosg gnome org>
Date:   Thu Jan 5 00:51:32 2012 +0100

    gdk: Have touch grabs behave like the implicit grab wrt crossing events
    
    These are equivalent to an implicit grab (with !owner_events), so
    if the touch leaves or enters the grab window, the other window
    won't receive the corresponding counter-event.

 gdk/gdkwindow.c |   17 +++++++++++++++--
 1 files changed, 15 insertions(+), 2 deletions(-)
---
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index 1f95ea7..5315ee4 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -8336,14 +8336,27 @@ send_crossing_event (GdkDisplay                 *display,
   GdkEvent *event;
   guint32 window_event_mask, type_event_mask;
   GdkDeviceGrabInfo *grab;
+  GdkTouchGrabInfo *touch_grab = NULL;
   GdkPointerWindowInfo *pointer_info;
   gboolean block_event = FALSE;
+  GdkEventSequence *sequence;
 
   grab = _gdk_display_has_device_grab (display, device, serial);
   pointer_info = _gdk_display_get_pointer_info (display, device);
 
-  if (grab != NULL &&
-      !grab->owner_events)
+  sequence = gdk_event_get_event_sequence (event_in_queue);
+  if (sequence)
+    touch_grab = _gdk_display_has_touch_grab (display, device, sequence, serial);
+
+  if (touch_grab)
+    {
+      if (window != touch_grab->window)
+        return;
+
+      window_event_mask = touch_grab->event_mask;
+    }
+  else if (grab != NULL &&
+           !grab->owner_events)
     {
       /* !owner_event => only report events wrt grab window, ignore rest */
       if ((GdkWindow *)window != grab->window)