1/* 2 * Copyright (C) 2011 Google 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'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 * 24 */ 25 26#ifndef ScriptedAnimationController_h 27#define ScriptedAnimationController_h 28 29#if ENABLE(REQUEST_ANIMATION_FRAME) 30#include "DOMTimeStamp.h" 31#if USE(REQUEST_ANIMATION_FRAME_TIMER) 32#if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR) 33#include "DisplayRefreshMonitor.h" 34#endif 35#include "Timer.h" 36#endif 37#include "PlatformScreen.h" 38#include <wtf/RefCounted.h> 39#include <wtf/RefPtr.h> 40#include <wtf/Vector.h> 41 42namespace WebCore { 43 44class Document; 45class RequestAnimationFrameCallback; 46 47class ScriptedAnimationController : public RefCounted<ScriptedAnimationController> 48#if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR) 49 , public DisplayRefreshMonitorClient 50#endif 51{ 52public: 53 static PassRefPtr<ScriptedAnimationController> create(Document* document, PlatformDisplayID displayID) 54 { 55 return adoptRef(new ScriptedAnimationController(document, displayID)); 56 } 57 ~ScriptedAnimationController(); 58 void clearDocumentPointer() { m_document = 0; } 59 60 typedef int CallbackId; 61 62 CallbackId registerCallback(PassRefPtr<RequestAnimationFrameCallback>); 63 void cancelCallback(CallbackId); 64 void serviceScriptedAnimations(double monotonicTimeNow); 65 66 void suspend(); 67 void resume(); 68 void setThrottled(bool); 69 70 void windowScreenDidChange(PlatformDisplayID); 71 72private: 73 ScriptedAnimationController(Document*, PlatformDisplayID); 74 75 typedef Vector<RefPtr<RequestAnimationFrameCallback> > CallbackList; 76 CallbackList m_callbacks; 77 78 Document* m_document; 79 CallbackId m_nextCallbackId; 80 int m_suspendCount; 81 82 void scheduleAnimation(); 83 84#if USE(REQUEST_ANIMATION_FRAME_TIMER) 85 void animationTimerFired(Timer<ScriptedAnimationController>*); 86 Timer<ScriptedAnimationController> m_animationTimer; 87 double m_lastAnimationFrameTimeMonotonic; 88 89#if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR) 90 // Override for DisplayRefreshMonitorClient 91 virtual void displayRefreshFired(double timestamp); 92 93 bool m_isUsingTimer; 94 bool m_isThrottled; 95#endif 96#endif 97}; 98 99} 100 101#endif // ENABLE(REQUEST_ANIMATION_FRAME) 102 103#endif // ScriptedAnimationController_h 104