[gtk/wip/carlosg/broken-grabs: 167/170] gdk/wayland: Ensure .leave events with active buttons breaks grabs

[Carlos Garnacho <carlosg src gnome org>]

commit f7d2985f897b5e2353182bc5d9e6361d5cff5a32
Author: Carlos Garnacho <carlosg gnome org>
Date:   Tue May 12 10:21:35 2020 +0200

    gdk/wayland: Ensure .leave events with active buttons breaks grabs
    
    Instead of silently ending up the grab, make it sure that we emit
    a GDK_GRAB_BROKEN event if needed.

 gdk/wayland/gdkdevice-wayland.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)
---
diff --git a/gdk/wayland/gdkdevice-wayland.c b/gdk/wayland/gdkdevice-wayland.c
index b30b1e63c7..4dde7a600a 100644
--- a/gdk/wayland/gdkdevice-wayland.c
+++ b/gdk/wayland/gdkdevice-wayland.c
@@ -706,7 +706,6 @@ device_maybe_emit_ungrab_crossing (GdkDevice *device,
 
   if (grab)
     {
-      grab->serial_end = grab->serial_start;
       prev_focus = grab->surface;
       surface = grab->surface;
     }
@@ -1541,6 +1540,19 @@ pointer_handle_leave (void              *data,
 
   _gdk_wayland_display_update_serial (display_wayland, serial);
 
+  if (seat->pointer_info.button_modifiers != 0)
+    {
+      gulong display_serial;
+
+      display_serial = _gdk_display_get_next_serial (seat->display);
+      _gdk_display_end_device_grab (seat->display, seat->master_pointer,
+                                    display_serial, NULL, TRUE);
+      _gdk_display_device_grab_update (seat->display,
+                                       seat->master_pointer,
+                                       seat->pointer,
+                                       display_serial);
+    }
+
   event = gdk_crossing_event_new (GDK_LEAVE_NOTIFY,
                                   seat->pointer_info.focus,
                                   seat->master_pointer,