1 /* 2 * Copyright (C) 2013 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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef CompositorPendingAnimations_h 32 #define CompositorPendingAnimations_h 33 34 #include "core/animation/AnimationPlayer.h" 35 #include "platform/Timer.h" 36 #include "platform/heap/Handle.h" 37 #include "wtf/Vector.h" 38 39 namespace blink { 40 41 // Manages the starting of pending animations on the compositor following a 42 // compositing update. 43 // For CSS Animations, used to synchronize the start of main-thread animations 44 // with compositor animations when both classes of CSS Animations are triggered 45 // by the same recalc 46 class CompositorPendingAnimations FINAL { 47 DISALLOW_ALLOCATION(); 48 public: 49 CompositorPendingAnimations()50 CompositorPendingAnimations() 51 : m_timer(this, &CompositorPendingAnimations::timerFired) 52 { } 53 54 void add(AnimationPlayer*); 55 // Returns whether we are waiting for an animation to start and should 56 // service again on the next frame. 57 bool update(bool startOnCompositor = true); 58 void notifyCompositorAnimationStarted(double monotonicAnimationStartTime); 59 60 void trace(Visitor*); 61 62 private: timerFired(Timer<CompositorPendingAnimations> *)63 void timerFired(Timer<CompositorPendingAnimations>*) { update(false); } 64 65 WillBeHeapVector<RefPtrWillBeMember<AnimationPlayer> > m_pending; 66 WillBeHeapVector<RefPtrWillBeMember<AnimationPlayer> > m_waitingForCompositorAnimationStart; 67 Timer<CompositorPendingAnimations> m_timer; 68 }; 69 70 } // namespace blink 71 72 #endif 73