[gtk+] Bug 517394 - Native resize grip steals button release ...

[Kristian Rietveld <kristian src gnome org>]

commit 17130a8ec9f461b681cce41215f460307a20aaba
Author: Christian Hergert <chris dronelabs com>
Date:   Fri Sep 25 21:52:13 2009 +0200

    Bug 517394 - Native resize grip steals button release ...
    
    Explicitly handle resizing by leaving all events in the lower right 15x15
    corner to Cocoa, if the window shows a resizing indicator.  Some
    applications may have widgets allocated in this area.  Generally, these
    widgets are likely larger than 15x15 so they can still be hit.  Often
    scroll bars are found in this area and these can also be manipulated by
    other means.  Since this is the only way of resizing windows on Mac OS X,
    it is too important to keep it broken.

 gdk/quartz/gdkevents-quartz.c |   36 ++++++++++++++++++++++++++++++++++--
 1 files changed, 34 insertions(+), 2 deletions(-)
---
diff --git a/gdk/quartz/gdkevents-quartz.c b/gdk/quartz/gdkevents-quartz.c
index 5be38b4..54baef7 100644
--- a/gdk/quartz/gdkevents-quartz.c
+++ b/gdk/quartz/gdkevents-quartz.c
@@ -33,6 +33,9 @@
 #include "gdkkeysyms.h"
 #include "gdkprivate-quartz.h"
 
+#define GRIP_WIDTH 15
+#define GRIP_HEIGHT 15
+
 /* This is the window corresponding to the key window */
 static GdkWindow   *current_keyboard_window;
 
@@ -564,8 +567,6 @@ find_window_for_ns_event (NSEvent *nsevent,
               if (*y < 0)
                 return NULL;
 
-            /* FIXME: Also need to leave resize events to cocoa somehow? */
-
             /* As for owner events, we need to use the toplevel under the
              * pointer, not the window from the NSEvent.
              */
@@ -574,7 +575,38 @@ find_window_for_ns_event (NSEvent *nsevent,
                                                                   &x_tmp, &y_tmp);
             if (toplevel_under_pointer)
               {
+                GdkWindowObject *toplevel_private;
+                GdkWindowImplQuartz *toplevel_impl;
+
                 toplevel = toplevel_under_pointer;
+
+                toplevel_private = (GdkWindowObject *)toplevel;
+                toplevel_impl = (GdkWindowImplQuartz *)toplevel_private->impl;
+
+                if ([toplevel_impl->toplevel showsResizeIndicator])
+                  {
+                    NSRect frame;
+
+                    /* If the resize indicator is visible and the event
+                     * is in the lower right 15x15 corner, we leave these
+                     * events to Cocoa as to be handled as resize events.
+                     * Applications may have widgets in this area.  These
+                     * will most likely be larger than 15x15 and for
+                     * scroll bars there are also other means to move
+                     * the scroll bar.  Since the resize indicator is
+                     * the only way of resizing windows on Mac OS, it
+                     * is too important to not make functional.
+                     */
+                    frame = [toplevel_impl->view bounds];
+                    if (x_tmp > frame.size.width - GRIP_WIDTH
+                        && x_tmp < frame.size.width
+                        && y_tmp > frame.size.height - GRIP_HEIGHT
+                        && y_tmp < frame.size.height)
+                      {
+                        return NULL;
+                      }
+                  }
+
                 *x = x_tmp;
                 *y = y_tmp;
               }