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 AnimationEffect_h 32 #define AnimationEffect_h 33 34 #include "CSSPropertyNames.h" 35 #include "wtf/HashMap.h" 36 #include "wtf/PassOwnPtr.h" 37 #include "wtf/RefCounted.h" 38 39 namespace WebCore { 40 41 class AnimatableValue; 42 43 class AnimationEffect : public RefCounted<AnimationEffect> { 44 public: 45 enum CompositeOperation { 46 CompositeReplace, 47 CompositeAdd, 48 }; 49 // Encapsulates the value which results from applying a set of composition operations onto an 50 // underlying value. It is used to represent the output of the effect phase of the Web 51 // Animations model. 52 class CompositableValue : public RefCounted<CompositableValue> { 53 public: 54 virtual ~CompositableValue() { } 55 virtual bool dependsOnUnderlyingValue() const = 0; 56 virtual PassRefPtr<AnimatableValue> compositeOnto(const AnimatableValue*) const = 0; 57 }; 58 59 virtual ~AnimationEffect() { } 60 typedef HashMap<CSSPropertyID, RefPtr<CompositableValue> > CompositableValueMap; 61 typedef Vector<std::pair<CSSPropertyID, RefPtr<CompositableValue> > > CompositableValueList; 62 virtual PassOwnPtr<CompositableValueList> sample(int iteration, double fraction) const = 0; 63 64 virtual bool affects(CSSPropertyID) { return false; }; 65 virtual bool isKeyframeAnimationEffect() const { return false; } 66 }; 67 68 } // namespace WebCore 69 70 #endif // AnimationEffect_h 71
