chromium/ui/ozone/platform/wayland/host/wayland_subsurface.h

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_SUBSURFACE_H_
#define UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_SUBSURFACE_H_

#include "base/containers/linked_list.h"
#include "base/memory/raw_ptr.h"
#include "third_party/abseil-cpp/absl/types/variant.h"
#include "ui/gfx/geometry/transform.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/gfx/overlay_transform.h"
#include "ui/ozone/platform/wayland/common/wayland_object.h"
#include "ui/ozone/platform/wayland/host/wayland_surface.h"

namespace ui {
class WaylandConnection;
class WaylandWindow;

// Wraps a wl_surface with a wl_subsurface role assigned. It is used to submit a
// buffer as a sub region of WaylandWindow.
//
// Inherits base::LinkNode<> s.t. it's location in the subsurface stack can be
// tracked and prevent us from sending excessive wl_subsurface.place_below/above
// requests.
class WaylandSubsurface : public base::LinkNode<WaylandSubsurface> { … };

}  // namespace ui

#endif  // UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_SUBSURFACE_H_