[mutter] window: Move grab op sync handling code out

[Jasper St. Pierre <jstpierre src gnome org>]

commit 881d256ce0007bddd0a5f806e63f0ab7f86b492a
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Thu Nov 15 17:18:06 2012 -0500

    window: Move grab op sync handling code out
    
    This removes some duplicate event type checks, and will make
    the code cleaner in the future when we want to make the grab_op_event
    handler take an XIDeviceEvent directly.
    
    Based on a patch by Owen Taylor <otaylor fishsoup net>
    
    https://bugzilla.gnome.org/show_bug.cgi?id=688779

 src/core/display-private.h |    1 +
 src/core/display.c         |   19 +++++++++----------
 src/core/window-private.h  |    5 +++++
 src/core/window.c          |   16 ++++++++++++----
 4 files changed, 27 insertions(+), 14 deletions(-)
---
diff --git a/src/core/display-private.h b/src/core/display-private.h
index 3996bd6..e0747b2 100644
--- a/src/core/display-private.h
+++ b/src/core/display-private.h
@@ -432,6 +432,7 @@ int meta_resize_gravity_from_grab_op (MetaGrabOp op);
 
 gboolean meta_grab_op_is_moving   (MetaGrabOp op);
 gboolean meta_grab_op_is_resizing (MetaGrabOp op);
+gboolean meta_grab_op_is_mouse    (MetaGrabOp op);
 
 void meta_display_devirtualize_modifiers (MetaDisplay        *display,
                                           MetaVirtualModifier modifiers,
diff --git a/src/core/display.c b/src/core/display.c
index 3aac556..8902043 100644
--- a/src/core/display.c
+++ b/src/core/display.c
@@ -1295,8 +1295,8 @@ grab_op_is_mouse_only (MetaGrabOp op)
     }
 }
 
-static gboolean
-grab_op_is_mouse (MetaGrabOp op)
+gboolean
+meta_grab_op_is_mouse (MetaGrabOp op)
 {
   switch (op)
     {
@@ -1922,12 +1922,11 @@ event_callback (XEvent   *event,
       event->type == (display->xsync_event_base + XSyncAlarmNotify) &&
       ((XSyncAlarmNotifyEvent*)event)->alarm == display->grab_sync_request_alarm)
     {
+      XSyncValue value = ((XSyncAlarmNotifyEvent*)event)->counter_value;
+      guint64 new_counter_value;
+      new_counter_value = XSyncValueLow32 (value) + ((gint64)XSyncValueHigh32 (value) << 32);
+      meta_window_update_sync_request_counter (display->grab_window, new_counter_value);
       filter_out_event = TRUE; /* GTK doesn't want to see this really */
-      
-      if (display->grab_op != META_GRAB_OP_NONE &&
-          display->grab_window != NULL &&
-          grab_op_is_mouse (display->grab_op))
-	meta_window_handle_mouse_grab_op_event (display->grab_window, event);
     }
 #endif /* HAVE_XSYNC */
 
@@ -2026,7 +2025,7 @@ event_callback (XEvent   *event,
             break;
 
           if ((window &&
-               grab_op_is_mouse (display->grab_op) &&
+               meta_grab_op_is_mouse (display->grab_op) &&
                display->grab_button != (int) event->xbutton.button &&
                display->grab_window == window) ||
               grab_op_is_keyboard (display->grab_op))
@@ -2221,7 +2220,7 @@ event_callback (XEvent   *event,
           display->overlay_key_only_pressed = FALSE;
 
           if (display->grab_window == window &&
-              grab_op_is_mouse (display->grab_op))
+              meta_grab_op_is_mouse (display->grab_op))
             meta_window_handle_mouse_grab_op_event (window, event);
           break;
         case MotionNotify:
@@ -2229,7 +2228,7 @@ event_callback (XEvent   *event,
             break;
 
           if (display->grab_window == window &&
-              grab_op_is_mouse (display->grab_op))
+              meta_grab_op_is_mouse (display->grab_op))
             meta_window_handle_mouse_grab_op_event (window, event);
           break;
         case EnterNotify:
diff --git a/src/core/window-private.h b/src/core/window-private.h
index 1db735e..1c81b99 100644
--- a/src/core/window-private.h
+++ b/src/core/window-private.h
@@ -580,6 +580,11 @@ void     meta_window_shove_titlebar_onscreen (MetaWindow *window);
 void meta_window_set_gravity (MetaWindow *window,
                               int         gravity);
 
+#ifdef HAVE_XSYNC
+void meta_window_update_sync_request_counter (MetaWindow *window,
+                                              guint64     new_counter_value);
+#endif /* HAVE_XSYNC */
+
 void meta_window_handle_mouse_grab_op_event (MetaWindow *window,
                                              XEvent     *event);
 
diff --git a/src/core/window.c b/src/core/window.c
index 7a9afdc..13c6262 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -9225,13 +9225,16 @@ update_tile_mode (MetaWindow *window)
     }
 }
 
+#ifdef HAVE_XSYNC
 void
-meta_window_handle_mouse_grab_op_event (MetaWindow *window,
-                                        XEvent     *event)
+meta_window_update_sync_request_counter (MetaWindow *window,
+                                         guint64     new_counter_value)
 {
-#ifdef HAVE_XSYNC
-  if (event->type == (window->display->xsync_event_base + XSyncAlarmNotify))
+  if (window->display->grab_op != META_GRAB_OP_NONE &&
+      window == window->display->grab_window &&
+      meta_grab_op_is_mouse (window->display->grab_op))
     {
+
       meta_topic (META_DEBUG_RESIZING,
                   "Alarm event received last motion x = %d y = %d\n",
                   window->display->grab_latest_motion_x,
@@ -9276,8 +9279,13 @@ meta_window_handle_mouse_grab_op_event (MetaWindow *window,
           break;
         }
     }
+}
 #endif /* HAVE_XSYNC */
 
+void
+meta_window_handle_mouse_grab_op_event (MetaWindow *window,
+                                        XEvent     *event)
+{
   switch (event->type)
     {
     case ButtonRelease: