ash/display/screen_ash.h

// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef ASH_DISPLAY_SCREEN_ASH_H_
#define ASH_DISPLAY_SCREEN_ASH_H_

#include <stdint.h>

#include "ash/ash_export.h"
#include "base/macros.h"
#include "ui/display/screen.h"

namespace display {
class DisplayManager;
class DisplayObserver;
}

namespace gfx {
class Rect;
}

namespace ash {

// Aura implementation of display::Screen. Implemented here to avoid circular
// dependencies.
class ASH_EXPORT ScreenAsh : public display::Screen {
 public:
  ScreenAsh();
  ~ScreenAsh() override;

  // display::Screen overrides:
  gfx::Point GetCursorScreenPoint() override;
  bool IsWindowUnderCursor(gfx::NativeWindow window) override;
  gfx::NativeWindow GetWindowAtScreenPoint(const gfx::Point& point) override;
  int GetNumDisplays() const override;
  const std::vector<display::Display>& GetAllDisplays() const override;
  display::Display GetDisplayNearestWindow(
      gfx::NativeWindow window) const override;
  display::Display GetDisplayNearestPoint(
      const gfx::Point& point) const override;
  display::Display GetDisplayMatching(
      const gfx::Rect& match_rect) const override;
  display::Display GetPrimaryDisplay() const override;
  void AddObserver(display::DisplayObserver* observer) override;
  void RemoveObserver(display::DisplayObserver* observer) override;

  // CreateDisplayManager with a ScreenAsh instance.
  static display::DisplayManager* CreateDisplayManager();

  // Create a screen instance to be used during shutdown.
  static void CreateScreenForShutdown();

  // Test helpers may need to clean up the ScreenForShutdown between tests.
  static void DeleteScreenForShutdown();

 private:
  DISALLOW_COPY_AND_ASSIGN(ScreenAsh);
};

}  // namespace ash

#endif  // ASH_DISPLAY_SCREEN_ASH_H_