[gtk+/client-side-windows: 14/284] Fix up keyboard grab handling

[Alexander Larsson <alexl src gnome org>]

commit 2b9dc3338a399d41652cbcea2fc32fa697b4514d
Author: Alexander Larsson <alexl redhat com>
Date:   Thu Dec 4 12:44:09 2008 +0100

    Fix up keyboard grab handling
---
 gdk/x11/gdkevents-x11.c |   34 +++++++++++++++++++++++++++++++---
 gdk/x11/gdkmain-x11.c   |   12 +++++++++---
 2 files changed, 40 insertions(+), 6 deletions(-)

diff --git a/gdk/x11/gdkevents-x11.c b/gdk/x11/gdkevents-x11.c
index b2a438c..26e5de4 100644
--- a/gdk/x11/gdkevents-x11.c
+++ b/gdk/x11/gdkevents-x11.c
@@ -868,6 +868,24 @@ set_user_time (GdkWindow *window,
 }
 
 static gboolean
+is_parent_of (GdkWindow *parent,
+              GdkWindow *child)
+{
+  GdkWindow *w;
+
+  w = child;
+  while (w != NULL)
+    {
+      if (w == parent)
+	return TRUE;
+
+      w = gdk_window_get_parent (w);
+    }
+
+  return FALSE;
+}
+
+static gboolean
 gdk_event_translate (GdkDisplay *display,
 		     GdkEvent   *event,
 		     XEvent     *xevent,
@@ -941,10 +959,20 @@ gdk_event_translate (GdkDisplay *display,
     
   if (window != NULL)
     {
-      /* Rewrite keyboard grabs to offscreen windows */
-      if ((xevent->type == KeyPress || xevent->type == KeyRelease) &&
-          window_private == display_x11->keyboard_xgrab_native_window)
+      /* Apply keyboard grabs to non-native windows */
+      if (/* Is key event */
+	  (xevent->type == KeyPress || xevent->type == KeyRelease) &&
+	  /* And we have a grab */
+	  display_x11->keyboard_xgrab_window != NULL &&
+	  (
+	   /* The window is not a descendant of the grabbed window */
+	   !is_parent_of (display_x11->keyboard_xgrab_window, window) ||
+	   /* Or owner event is false */
+	   !display_x11->keyboard_xgrab_owner_events
+	   )
+	  )
         {
+	  /* Report key event against grab window */
           window_private = display_x11->keyboard_xgrab_window;
           window = (GdkWindow *) window_private;
         }
diff --git a/gdk/x11/gdkmain-x11.c b/gdk/x11/gdkmain-x11.c
index 2ab67c7..89a9c75 100644
--- a/gdk/x11/gdkmain-x11.c
+++ b/gdk/x11/gdkmain-x11.c
@@ -206,6 +206,10 @@ gdk_pointer_grab (GdkWindow *	  window,
 
   native = gdk_window_get_toplevel (window);
 
+  /* TODO: What do we do for offscreens and  children? We need to proxy the grab somehow */
+  if (!GDK_IS_WINDOW_IMPL_X11 (GDK_WINDOW_OBJECT (native)->impl))
+    return GDK_GRAB_SUCCESS;
+  
   if (confine_to)
     confine_to = _gdk_window_get_impl_window (confine_to);
 
@@ -310,13 +314,15 @@ gdk_keyboard_grab (GdkWindow *	   window,
   GdkDisplayX11 *display_x11;
   GdkWindow *native;
 
-  if (1) return 0; /* TODO: fix */
-  
   g_return_val_if_fail (window != NULL, 0);
   g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
 
-  native = _gdk_window_get_impl_window (window);
+  native = gdk_window_get_toplevel (window);
 
+  /* TODO: What do we do for offscreens and  children? We need to proxy the grab somehow */
+  if (!GDK_IS_WINDOW_IMPL_X11 (GDK_WINDOW_OBJECT (native)->impl))
+    return GDK_GRAB_SUCCESS;
+  
   display_x11 = GDK_DISPLAY_X11 (GDK_WINDOW_DISPLAY (native));
 
   serial = NextRequest (GDK_WINDOW_XDISPLAY (native));