1/* 2 * Copyright (C) 2012 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 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 11 * documentation and/or other materials provided with the distribution. 12 * 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 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 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 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef GraphicsLayerUpdater_h 27#define GraphicsLayerUpdater_h 28 29#include "DisplayRefreshMonitorClient.h" 30#include "PlatformScreen.h" 31 32namespace WebCore { 33 34class GraphicsLayerUpdater; 35 36class GraphicsLayerUpdaterClient { 37public: 38 virtual ~GraphicsLayerUpdaterClient() { } 39 virtual void flushLayersSoon(GraphicsLayerUpdater*) = 0; 40#if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR) 41 virtual PassRefPtr<DisplayRefreshMonitor> createDisplayRefreshMonitor(PlatformDisplayID) const = 0; 42#endif 43}; 44 45class GraphicsLayerUpdater 46#if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR) 47 : public DisplayRefreshMonitorClient 48#endif 49{ 50public: 51 GraphicsLayerUpdater(GraphicsLayerUpdaterClient*, PlatformDisplayID); 52 virtual ~GraphicsLayerUpdater(); 53 54 void scheduleUpdate(); 55 void screenDidChange(PlatformDisplayID); 56 57#if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR) 58 virtual PassRefPtr<DisplayRefreshMonitor> createDisplayRefreshMonitor(PlatformDisplayID) const override; 59#endif 60 61private: 62 virtual void displayRefreshFired(double timestamp); 63 64 GraphicsLayerUpdaterClient* m_client; 65 bool m_scheduled; 66}; 67 68} // namespace WebCore 69 70#endif // GraphicsLayerUpdater_h 71