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/animatable/AnimatableImage.h" 33 34 #include "core/css/CSSImageValue.h" 35 #include "core/rendering/style/StyleGeneratedImage.h" 36 #include "wtf/MathExtras.h" 37 38 namespace blink { 39 40 // FIXME: Once cross-fade works on generated image types, remove this method. 41 bool AnimatableImage::usesDefaultInterpolationWith(const AnimatableValue* value) const 42 { 43 if (!m_value->isImageValue()) 44 return true; 45 if (!toAnimatableImage(value)->toCSSValue()->isImageValue()) 46 return true; 47 return false; 48 } 49 50 PassRefPtrWillBeRawPtr<AnimatableValue> AnimatableImage::interpolateTo(const AnimatableValue* value, double fraction) const 51 { 52 if (fraction <= 0 || fraction >= 1 || usesDefaultInterpolationWith(value)) 53 return defaultInterpolateTo(this, value, fraction); 54 55 CSSValue* fromValue = toCSSValue(); 56 CSSValue* toValue = toAnimatableImage(value)->toCSSValue(); 57 58 RefPtrWillBeRawPtr<CSSCrossfadeValue> crossfadeValue = CSSCrossfadeValue::create(fromValue, toValue); 59 crossfadeValue->setPercentage(CSSPrimitiveValue::create(fraction, CSSPrimitiveValue::CSS_NUMBER)); 60 return create(crossfadeValue); 61 } 62 63 bool AnimatableImage::equalTo(const AnimatableValue* value) const 64 { 65 return m_value->equals(*toAnimatableImage(value)->m_value.get()); 66 } 67 68 } 69
