| // Copyright (c) 2012 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 REMOTING_HOST_RESIZING_HOST_OBSERVER_H_ |
| #define REMOTING_HOST_RESIZING_HOST_OBSERVER_H_ |
| |
| #include <stddef.h> |
| |
| #include <memory> |
| |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/time/time.h" |
| #include "base/timer/timer.h" |
| #include "remoting/host/screen_controls.h" |
| #include "remoting/host/screen_resolution.h" |
| |
| namespace base { |
| class TickClock; |
| } |
| |
| namespace remoting { |
| |
| class DesktopResizer; |
| |
| // TODO(alexeypa): Rename this class to reflect that it is not |
| // HostStatusObserver any more. |
| |
| // Uses the specified DesktopResizer to match host desktop size to the client |
| // view size as closely as is possible. When the connection closes, restores |
| // the original desktop size if restore is true. |
| class ResizingHostObserver : public ScreenControls { |
| public: |
| explicit ResizingHostObserver( |
| std::unique_ptr<DesktopResizer> desktop_resizer, |
| bool restore); |
| ~ResizingHostObserver() override; |
| |
| // ScreenControls interface. |
| void SetScreenResolution(const ScreenResolution& resolution) override; |
| |
| // Provide a replacement for base::TimeTicks::Now so that this class can be |
| // unit-tested in a timely manner. This function will be called exactly |
| // once for each call to SetScreenResolution. |
| void SetClockForTesting(const base::TickClock* clock); |
| |
| private: |
| void RestoreScreenResolution(); |
| |
| std::unique_ptr<DesktopResizer> desktop_resizer_; |
| ScreenResolution original_resolution_; |
| bool restore_; |
| |
| // State to manage rate-limiting of desktop resizes. |
| base::OneShotTimer deferred_resize_timer_; |
| base::TimeTicks previous_resize_time_; |
| const base::TickClock* clock_; |
| |
| base::WeakPtrFactory<ResizingHostObserver> weak_factory_{this}; |
| |
| DISALLOW_COPY_AND_ASSIGN(ResizingHostObserver); |
| }; |
| |
| } // namespace remoting |
| |
| #endif // REMOTING_HOST_RESIZING_HOST_OBSERVER_H_ |