| // Copyright 2016 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 CONTENT_BROWSER_RENDERER_HOST_OFFSCREEN_CANVAS_SURFACE_MANAGER_H_ |
| #define CONTENT_BROWSER_RENDERER_HOST_OFFSCREEN_CANVAS_SURFACE_MANAGER_H_ |
| |
| #include "base/memory/weak_ptr.h" |
| #include "cc/surfaces/surface_id.h" |
| #include "cc/surfaces/surface_observer.h" |
| #include "content/browser/renderer_host/offscreen_canvas_surface_impl.h" |
| |
| namespace content { |
| |
| class CONTENT_EXPORT OffscreenCanvasSurfaceManager |
| : public cc::SurfaceObserver { |
| public: |
| OffscreenCanvasSurfaceManager(); |
| virtual ~OffscreenCanvasSurfaceManager(); |
| |
| static OffscreenCanvasSurfaceManager* GetInstance(); |
| |
| void RegisterOffscreenCanvasSurfaceInstance(cc::FrameSinkId, |
| OffscreenCanvasSurfaceImpl*); |
| void UnregisterOffscreenCanvasSurfaceInstance(cc::FrameSinkId); |
| OffscreenCanvasSurfaceImpl* GetSurfaceInstance(cc::FrameSinkId); |
| |
| private: |
| friend class OffscreenCanvasSurfaceManagerTest; |
| |
| // cc::SurfaceObserver implementation. |
| // TODO(crbug.com/662498): Implement these functions when |
| // OffscreenCanvasSurfaceManager must propagate the resizing information |
| // back to renderer/main. |
| void OnSurfaceCreated(const cc::SurfaceId& surface_id, |
| const gfx::Size& frame_size, |
| float device_scale_factor) override {} |
| void OnSurfaceDamaged(const cc::SurfaceId&, bool* changed) override {} |
| |
| // When an OffscreenCanvasSurfaceImpl instance is destructed, it will |
| // unregister the corresponding entry from this map. |
| std::unordered_map<cc::FrameSinkId, |
| OffscreenCanvasSurfaceImpl*, |
| cc::FrameSinkIdHash> |
| registered_surface_instances_; |
| DISALLOW_COPY_AND_ASSIGN(OffscreenCanvasSurfaceManager); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_RENDERER_HOST_OFFSCREEN_CANVAS_SURFACE_MANAGER_H_ |