/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 mozilla_widget_gtk_ScreenHelperGTK_h
#define mozilla_widget_gtk_ScreenHelperGTK_h

#include "mozilla/widget/ScreenManager.h"
#include "gdk/gdk.h"
#ifdef MOZ_WAYLAND
#  include "nsWaylandDisplay.h"
#endif

class nsWindow;

namespace mozilla::widget {
class ScreenGetterGtk;

class ScreenHelperGTK final : public ScreenManager::Helper {
 public:
  ScreenHelperGTK();
  ~ScreenHelperGTK();

  static int GetMonitorCount();
  static gint GetGTKMonitorScaleFactor(gint aMonitorNum = 0);
  static float GetGTKMonitorFractionalScaleFactor(gint aMonitorNum = 0);
  static RefPtr<widget::Screen> GetScreenForWindow(nsWindow* aWindow);

  static void RequestRefreshScreens(bool aInitialRefresh = false);
  static int GetLastSerial() { return gLastSerial; }
#ifdef MOZ_WAYLAND
  static void ScreensPrefChanged(const char* aPrefIgnored, void* aDataIgnored);
#endif
 private:
  static GdkWindow* sRootWindow;
  static StaticRefPtr<ScreenGetterGtk> gLastScreenGetter;
  static int gLastSerial;
};

}  // namespace mozilla::widget

#endif  // mozilla_widget_gtk_ScreenHelperGTK_h