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 InterpolatedTransformOperation_h 32 #define InterpolatedTransformOperation_h 33 34 #include "platform/transforms/TransformOperation.h" 35 #include "platform/transforms/TransformOperations.h" 36 37 namespace WebCore { 38 39 // This class is an implementation detail for deferred interpolations. 40 class PLATFORM_EXPORT InterpolatedTransformOperation : public TransformOperation { 41 public: create(const TransformOperations & from,const TransformOperations & to,double progress)42 static PassRefPtr<InterpolatedTransformOperation> create(const TransformOperations& from, const TransformOperations& to, double progress) 43 { 44 return adoptRef(new InterpolatedTransformOperation(from, to, progress)); 45 } 46 47 private: isIdentity()48 virtual bool isIdentity() const { return false; } 49 type()50 virtual OperationType type() const OVERRIDE { return Interpolated; } 51 52 virtual bool operator==(const TransformOperation&) const; 53 virtual void apply(TransformationMatrix&, const FloatSize& borderBoxSize) const; 54 55 virtual PassRefPtr<TransformOperation> blend(const TransformOperation* from, double progress, bool blendToIdentity = false); 56 dependsOnBoxSize()57 virtual bool dependsOnBoxSize() const OVERRIDE 58 { 59 return from.dependsOnBoxSize() || to.dependsOnBoxSize(); 60 } 61 InterpolatedTransformOperation(const TransformOperations & from,const TransformOperations & to,double progress)62 InterpolatedTransformOperation(const TransformOperations& from, const TransformOperations& to, double progress) 63 : from(from) 64 , to(to) 65 , progress(progress) 66 { } 67 68 const TransformOperations from; 69 const TransformOperations to; 70 double progress; 71 }; 72 73 } // namespace WebCore 74 75 #endif // InterpolatedTransformOperation_h 76 77