[gtk/wip/chergert/quartz4u: 84/146] macos: fix refocusing bug

[Christian Hergert <chergert src gnome org>]

commit fff12918bfb586b613786b5e5d4a268d42f6b9cc
Author: Christian Hergert <chergert redhat com>
Date:   Tue May 19 14:06:11 2020 -0700

    macos: fix refocusing bug
    
    We had a situation since the beginning here where you'd have to
    refocus the window after doing window drag operations.

 gdk/macos/GdkMacosWindow.c            |  8 ++++++++
 gdk/macos/gdkmacosdisplay-private.h   |  2 ++
 gdk/macos/gdkmacosdisplay-translate.c | 22 ++++++++++++++++++++++
 3 files changed, 32 insertions(+)
---
diff --git a/gdk/macos/GdkMacosWindow.c b/gdk/macos/GdkMacosWindow.c
index 108d6cb86b..7be84c515c 100644
--- a/gdk/macos/GdkMacosWindow.c
+++ b/gdk/macos/GdkMacosWindow.c
@@ -131,6 +131,14 @@
       inManualResize = NO;
       inMove = NO;
 
+      /* We need to deliver the event to the proper drag gestures or we
+       * will leave the window in inconsistent state that requires clicking
+       * in the window to cancel the gesture.
+       *
+       * TODO: Can we improve grab breaking to fix this?
+       */
+      _gdk_macos_display_send_button_event ([self gdkDisplay], event);
+
       break;
     }
 
diff --git a/gdk/macos/gdkmacosdisplay-private.h b/gdk/macos/gdkmacosdisplay-private.h
index 303be3535e..a29bea4ba2 100644
--- a/gdk/macos/gdkmacosdisplay-private.h
+++ b/gdk/macos/gdkmacosdisplay-private.h
@@ -143,6 +143,8 @@ void             _gdk_macos_display_surface_became_key             (GdkMacosDisp
 int              _gdk_macos_display_get_nominal_refresh_rate       (GdkMacosDisplay *self);
 void             _gdk_macos_display_clear_sorting                  (GdkMacosDisplay *self);
 const GList     *_gdk_macos_display_get_surfaces                   (GdkMacosDisplay *self);
+void             _gdk_macos_display_send_button_event              (GdkMacosDisplay *self,
+                                                                    NSEvent         *nsevent);
 
 G_END_DECLS
 
diff --git a/gdk/macos/gdkmacosdisplay-translate.c b/gdk/macos/gdkmacosdisplay-translate.c
index 77657f4d22..636173aa27 100644
--- a/gdk/macos/gdkmacosdisplay-translate.c
+++ b/gdk/macos/gdkmacosdisplay-translate.c
@@ -1199,3 +1199,25 @@ _gdk_macos_display_synthesize_motion (GdkMacosDisplay *self,
   node = _gdk_event_queue_append (GDK_DISPLAY (self), event);
   _gdk_windowing_got_event (GDK_DISPLAY (self), node, event, 0);
 }
+
+void
+_gdk_macos_display_send_button_event (GdkMacosDisplay *self,
+                                      NSEvent         *nsevent)
+{
+  GdkMacosSurface *surface;
+  GdkEvent *event;
+  int x;
+  int y;
+
+  g_return_if_fail (GDK_IS_MACOS_DISPLAY (self));
+  g_return_if_fail (nsevent != NULL);
+
+  if (!(surface = find_surface_for_ns_event (self, nsevent, &x, &y)))
+    return;
+
+  event = fill_button_event (self, surface, nsevent, x, y);
+  _gdk_windowing_got_event (GDK_DISPLAY (self),
+                            _gdk_event_queue_append (GDK_DISPLAY (self), event),
+                            event,
+                            0);
+}