1 /* 2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org) 3 * (C) 2000 Antti Koivisto (koivisto@kde.org) 4 * (C) 2000 Dirk Mueller (mueller@kde.org) 5 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. 6 * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com) 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Library General Public 10 * License as published by the Free Software Foundation; either 11 * version 2 of the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Library General Public License for more details. 17 * 18 * You should have received a copy of the GNU Library General Public License 19 * along with this library; see the file COPYING.LIB. If not, write to 20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 21 * Boston, MA 02110-1301, USA. 22 * 23 */ 24 25 #ifndef IdentityTransformOperation_h 26 #define IdentityTransformOperation_h 27 28 #include "platform/transforms/TransformOperation.h" 29 30 namespace blink { 31 32 class PLATFORM_EXPORT IdentityTransformOperation : public TransformOperation { 33 public: create()34 static PassRefPtr<IdentityTransformOperation> create() 35 { 36 return adoptRef(new IdentityTransformOperation()); 37 } 38 canBlendWith(const TransformOperation & other)39 virtual bool canBlendWith(const TransformOperation& other) const 40 { 41 return isSameType(other); 42 } 43 44 private: type()45 virtual OperationType type() const OVERRIDE { return Identity; } 46 47 virtual bool operator==(const TransformOperation& o) const OVERRIDE 48 { 49 return isSameType(o); 50 } 51 apply(TransformationMatrix &,const FloatSize &)52 virtual void apply(TransformationMatrix&, const FloatSize&) const OVERRIDE { } 53 54 virtual PassRefPtr<TransformOperation> blend(const TransformOperation*, double, bool = false) OVERRIDE 55 { 56 return this; 57 } 58 IdentityTransformOperation()59 IdentityTransformOperation() 60 { 61 } 62 63 }; 64 65 } // namespace blink 66 67 #endif // IdentityTransformOperation_h 68