2 * Copyright (C) 2012 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
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13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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26 #ifndef GraphicsLayerUpdater_h
27 #define GraphicsLayerUpdater_h
29 #include "DisplayRefreshMonitor.h"
30 #include "PlatformScreen.h"
34 class GraphicsLayerUpdater;
36 class GraphicsLayerUpdaterClient {
38 virtual ~GraphicsLayerUpdaterClient() { }
39 virtual void flushLayersSoon(GraphicsLayerUpdater*) = 0;
42 class GraphicsLayerUpdater
43 #if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR)
44 : public DisplayRefreshMonitorClient
48 GraphicsLayerUpdater(GraphicsLayerUpdaterClient*, PlatformDisplayID);
49 virtual ~GraphicsLayerUpdater();
51 void scheduleUpdate();
52 void screenDidChange(PlatformDisplayID);
55 virtual void displayRefreshFired(double timestamp);
57 GraphicsLayerUpdaterClient* m_client;
61 } // namespace WebCore
63 #endif // GraphicsLayerUpdater_h