gecko-dev/widget/gtk/GUniquePtr.h
stransky 21e14041bd Bug 1777269 [Wayland] Apply workaround for Mutter enter/leave bogus events r=emilio
When we open a popup window (tooltip for instance) on top of GDK_WINDOW_TYPE_HINT_UTILITY popup, Mutter compositor sends bogus
leave/enter events to the GDK_WINDOW_TYPE_HINT_UTILITY popup (https://gitlab.gnome.org/GNOME/gtk/-/issues/5089).

That leads to immediate tooltip close. As a workaround ignore these
bogus events.

We need to check two affected window types:

- toplevel window with at least two child popups where the first one is
  GDK_WINDOW_TYPE_HINT_UTILITY.
- popup GDK_WINDOW_TYPE_HINT_UTILITY with a child popup.

We ignore two bogus leave/enter sequences which are fired by mutter together:

 1. Leave (popup) -> Enter (toplevel)
 2. Leave (toplevel) -> Enter (popup)

Differential Revision: https://phabricator.services.mozilla.com/D156301
2022-09-06 13:48:12 +00:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef GUniquePtr_h_
#define GUniquePtr_h_
// Provides GUniquePtr to g_free a given pointer.
#include <glib.h>
#include <gtk/gtk.h>
#include "mozilla/UniquePtr.h"
namespace mozilla {
struct GFreeDeleter {
constexpr GFreeDeleter() = default;
void operator()(GdkEventCrossing* aPtr) const {
gdk_event_free((GdkEvent*)aPtr);
}
void operator()(GdkEventKey* aPtr) const { gdk_event_free((GdkEvent*)aPtr); }
void operator()(GdkEvent* aPtr) const { gdk_event_free(aPtr); }
void operator()(GError* aPtr) const { g_error_free(aPtr); }
void operator()(void* aPtr) const { g_free(aPtr); }
void operator()(GtkPaperSize* aPtr) const { gtk_paper_size_free(aPtr); }
};
template <typename T>
using GUniquePtr = UniquePtr<T, GFreeDeleter>;
} // namespace mozilla
#endif