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 AnimatableColor_h 32 #define AnimatableColor_h 33 34 #include "core/animation/animatable/AnimatableValue.h" 35 #include "platform/graphics/Color.h" 36 37 namespace blink { 38 39 class AnimatableColorImpl { 40 public: 41 AnimatableColorImpl(float red, float green, float blue, float alpha); 42 AnimatableColorImpl(Color); 43 Color toColor() const; 44 AnimatableColorImpl interpolateTo(const AnimatableColorImpl&, double fraction) const; 45 bool operator==(const AnimatableColorImpl&) const; 46 double distanceTo(const AnimatableColorImpl&) const; 47 48 private: 49 float m_alpha; 50 float m_red; 51 float m_green; 52 float m_blue; 53 }; 54 55 // This class handles both the regular and 'visted link' colors for a given 56 // property. Currently it is used for all properties, even those which do not 57 // support a separate 'visited link' color (eg SVG properties). This is correct 58 // but inefficient. 59 class AnimatableColor FINAL : public AnimatableValue { 60 public: 61 static PassRefPtrWillBeRawPtr<AnimatableColor> create(const AnimatableColorImpl&, const AnimatableColorImpl& visitedLinkColor); 62 Color color() const { return m_color.toColor(); } 63 Color visitedLinkColor() const { return m_visitedLinkColor.toColor(); } 64 65 virtual void trace(Visitor* visitor) OVERRIDE { AnimatableValue::trace(visitor); } 66 67 protected: 68 virtual PassRefPtrWillBeRawPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const OVERRIDE; 69 70 private: 71 AnimatableColor(const AnimatableColorImpl& color, const AnimatableColorImpl& visitedLinkColor) 72 : m_color(color) 73 , m_visitedLinkColor(visitedLinkColor) 74 { 75 } 76 virtual AnimatableType type() const OVERRIDE { return TypeColor; } 77 virtual bool equalTo(const AnimatableValue*) const OVERRIDE; 78 virtual double distanceTo(const AnimatableValue*) const OVERRIDE; 79 const AnimatableColorImpl m_color; 80 const AnimatableColorImpl m_visitedLinkColor; 81 }; 82 83 DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatableColor, isColor()); 84 85 } // namespace blink 86 87 #endif // AnimatableColor_h 88
