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 #include "config.h" 32 #include "core/animation/Animation.h" 33 34 #include "core/animation/DocumentTimeline.h" 35 #include "core/animation/Player.h" 36 #include "core/dom/Element.h" 37 38 namespace WebCore { 39 40 PassRefPtr<Animation> Animation::create(PassRefPtr<Element> target, PassRefPtr<AnimationEffect> effect, const Timing& timing, PassOwnPtr<TimedItemEventDelegate> eventDelegate) 41 { 42 return adoptRef(new Animation(target, effect, timing, eventDelegate)); 43 } 44 45 Animation::Animation(PassRefPtr<Element> target, PassRefPtr<AnimationEffect> effect, const Timing& timing, PassOwnPtr<TimedItemEventDelegate> eventDelegate) 46 : TimedItem(timing, eventDelegate) 47 , m_target(target) 48 , m_effect(effect) 49 , m_activeInAnimationStack(false) 50 { 51 } 52 53 void Animation::willDetach() 54 { 55 if (m_activeInAnimationStack) 56 clearEffects(); 57 } 58 59 static AnimationStack* ensureAnimationStack(Element* element) 60 { 61 return element->ensureActiveAnimations()->defaultStack(); 62 } 63 64 void Animation::applyEffects(bool previouslyInEffect) 65 { 66 ASSERT(player()); 67 if (!previouslyInEffect) { 68 ensureAnimationStack(m_target.get())->add(this); 69 m_activeInAnimationStack = true; 70 } 71 m_compositableValues = m_effect->sample(currentIteration(), timeFraction()); 72 m_target->setNeedsStyleRecalc(LocalStyleChange, StyleChangeFromRenderer); 73 } 74 75 void Animation::clearEffects() 76 { 77 ASSERT(player()); 78 ASSERT(m_activeInAnimationStack); 79 ensureAnimationStack(m_target.get())->remove(this); 80 m_activeInAnimationStack = false; 81 m_compositableValues.clear(); 82 } 83 84 void Animation::updateChildrenAndEffects(bool wasInEffect) const 85 { 86 ASSERT(m_activeInAnimationStack == wasInEffect); 87 if (isInEffect()) 88 const_cast<Animation*>(this)->applyEffects(wasInEffect); 89 else if (wasInEffect) 90 const_cast<Animation*>(this)->clearEffects(); 91 } 92 93 } // namespace WebCore 94