Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(1237)

Unified Diff: content/browser/renderer_host/offscreen_canvas_surface_manager.h

Issue 2479563005: Create manager to track OffscreenCanvasSurfaceImpl instances (Closed)
Patch Set: rebase Created 4 years, 1 month ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
Index: content/browser/renderer_host/offscreen_canvas_surface_manager.h
diff --git a/content/browser/renderer_host/offscreen_canvas_surface_manager.h b/content/browser/renderer_host/offscreen_canvas_surface_manager.h
new file mode 100644
index 0000000000000000000000000000000000000000..3901bb4e7120283b43027623e11bfea0426acc9f
--- /dev/null
+++ b/content/browser/renderer_host/offscreen_canvas_surface_manager.h
@@ -0,0 +1,51 @@
+// 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_

Powered by Google App Engine
This is Rietveld 408576698