| // Copyright 2020 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 UI_AURA_NATIVE_WINDOW_OCCLUSION_TRACKER_H_ |
| #define UI_AURA_NATIVE_WINDOW_OCCLUSION_TRACKER_H_ |
| |
| #include "build/build_config.h" |
| #include "ui/aura/aura_export.h" |
| |
| namespace aura { |
| |
| class WindowTreeHost; |
| |
| // This class is a shim between WindowOcclusionTracker and os-specific |
| // window occlusion tracking classes (currently just |
| // NativeWindowOcclusionTrackerWin). |
| class AURA_EXPORT NativeWindowOcclusionTracker { |
| public: |
| NativeWindowOcclusionTracker() = delete; |
| NativeWindowOcclusionTracker(const NativeWindowOcclusionTracker&) = delete; |
| NativeWindowOcclusionTracker& operator=(const NativeWindowOcclusionTracker&) = |
| delete; |
| ~NativeWindowOcclusionTracker() = delete; |
| |
| // Enables native window occlusion tracking for the native window |host| |
| // represents. |
| static void EnableNativeWindowOcclusionTracking(WindowTreeHost* host); |
| |
| // Disables native window occlusion tracking for the native window |host| |
| // represents. |
| static void DisableNativeWindowOcclusionTracking(WindowTreeHost* host); |
| |
| // Returns whether native window occlusion tracking is always enabled. |
| static bool IsNativeWindowOcclusionTrackingAlwaysEnabled( |
| WindowTreeHost* host); |
| |
| private: |
| friend class WindowTreeHostWithReleaseTest; |
| friend class WindowTreeHostWithThrottleTest; |
| |
| #if BUILDFLAG(IS_WIN) |
| static void SetHeadlessCheckEnabled(bool enabled); |
| #endif |
| }; |
| |
| } // namespace aura |
| |
| #endif // UI_AURA_NATIVE_WINDOW_OCCLUSION_TRACKER_H_ |