Revert "add patch for handling mouse grabs in gdk/quartz by foreign (nested) windows"

This reverts commit a6d67fdd56.

patches/gdk-foreign-view-mouse.patch

@@ -1,106 +0,0 @@
---- /tmp/gtk+-2.24.23/gdk/quartz/gdkevents-quartz.c	2013-10-16 11:31:40.000000000 -0400
-+++ gdkevents-quartz.c	2016-11-18 06:53:12.000000000 -0500
-@@ -43,6 +43,9 @@
-      GDK_WINDOW_TYPE (window) != GDK_WINDOW_FOREIGN &&  \
-      GDK_WINDOW_TYPE (window) != GDK_WINDOW_OFFSCREEN)
- 
-+/* This is the NSView not owned by GDK where a mouse down event occurs */
-+static NSView *foreign_mouse_down_view;
-+
- /* This is the window corresponding to the key window */
- static GdkWindow   *current_keyboard_window;
- 
-@@ -705,14 +708,35 @@
-   NSPoint screen_point;
-   NSEventType event_type;
- 
-+  event_type = [nsevent type];
-+
-+  if (foreign_mouse_down_view) {
-+	  switch (event_type) {
-+	  case NSLeftMouseUp:
-+	  case NSRightMouseUp:
-+	  case NSOtherMouseUp:
-+		  /* mouse up happened, foreign view needs to handle it
-+		     but we will also assume that it does (e.g. ends
-+		     a drag and whatever goes with it) and so we reset
-+		     foreign_mouse_down_view.
-+		  */
-+		  foreign_mouse_down_view = 0;
-+		  return NULL;
-+
-+	  default:
-+		  /* foreign view needs to handle this */
-+		  return NULL;
-+	  }
-+  }
-+
-   view = (GdkQuartzView *)[[nsevent window] contentView];
- 
-   toplevel = get_toplevel_from_ns_event (nsevent, &screen_point, x, y);
--  if (!toplevel)
--    return NULL;
-+  if (!toplevel) 
-+     return NULL;
-+
-   _gdk_quartz_window_nspoint_to_gdk_xy (screen_point, x_root, y_root);
- 
--  event_type = [nsevent type];
- 
-   switch (event_type)
-     {
-@@ -749,10 +773,10 @@
-              * event mask should not be checked.
-              */
- 	    if (!grab->implicit
--                && (grab->event_mask & get_event_mask_from_ns_event (nsevent)) == 0)
--              return NULL;
-+	        && (grab->event_mask & get_event_mask_from_ns_event (nsevent)) == 0)
-+		 return NULL;
- 
--            if (grab->owner_events)
-+	    if (grab->owner_events)
-               {
-                 /* For owner events, we need to use the toplevel under the
-                  * pointer, not the window from the NSEvent, since that is
-@@ -823,13 +847,25 @@
- 		{
- 			unsigned int subviews = [[toplevel_impl->view subviews] count];
- 			unsigned int si;
--			
-+
- 			for (si = 0; si < subviews; ++si) {
- 				NSView* sv = [[toplevel_impl->view subviews] objectAtIndex:si];
- 				NSRect r = [sv frame];
- 				if (r.origin.x <= *x && r.origin.x + r.size.width >= *x &&
- 				    r.origin.y <= *y && r.origin.y + r.size.height >= *y) {
- 					/* event is within subview, forward back to Cocoa */
-+
-+					switch (event_type)
-+					  {
-+					      case NSLeftMouseDown:
-+					      case NSRightMouseDown:
-+					      case NSOtherMouseDown:
-+					 	 foreign_mouse_down_view = sv;
-+						 break;
-+					      default:
-+						 break;
-+					  }
-+
- 					return NULL;
- 				}
- 			}
-@@ -838,12 +874,11 @@
-                 *x = x_tmp;
-                 *y = y_tmp;
-               }
--
-             return toplevel;
- 	  }
-       }
-       break;
--      
-+
-     case NSMouseEntered:
-     case NSMouseExited:
-       /* Only handle our own entered/exited events, not the ones for the