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- // Copyright (c) 2013 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_DISPLAY_CONFIGURATION_OBSERVER_H_
- #define ASH_DISPLAY_DISPLAY_CONFIGURATION_OBSERVER_H_
- #include "ash/ash_export.h"
- #include "ash/display/window_tree_host_manager.h"
- #include "ash/public/cpp/tablet_mode_observer.h"
- #include "base/compiler_specific.h"
- #include "base/memory/weak_ptr.h"
- namespace ash {
- // DisplayConfigurationObserver observes and saves
- // the change of display configurations.
- class ASH_EXPORT DisplayConfigurationObserver
- : public WindowTreeHostManager::Observer,
- public TabletModeObserver {
- public:
- DisplayConfigurationObserver();
- DisplayConfigurationObserver(const DisplayConfigurationObserver&) = delete;
- DisplayConfigurationObserver& operator=(const DisplayConfigurationObserver&) =
- delete;
- ~DisplayConfigurationObserver() override;
- protected:
- // WindowTreeHostManager::Observer:
- void OnDisplaysInitialized() override;
- void OnDisplayConfigurationChanged() override;
- // TabletModeObserver:
- void OnTabletModeStarted() override;
- void OnTabletModeEnded() override;
- private:
- void StartMirrorMode();
- void EndMirrorMode();
- // True if the device was in mirror mode before siwtching to tablet mode.
- bool was_in_mirror_mode_ = false;
- base::WeakPtrFactory<DisplayConfigurationObserver> weak_ptr_factory_{this};
- };
- } // namespace ash
- #endif // ASH_DISPLAY_DISPLAY_CONFIGURATION_OBSERVER_H_
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