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 WebCore { 31 32 class PLATFORM_EXPORT IdentityTransformOperation : public TransformOperation { 33 public: create()34 static PassRefPtr<IdentityTransformOperation> create() 35 { 36 return adoptRef(new IdentityTransformOperation()); 37 } 38 39 private: isIdentity()40 virtual bool isIdentity() const { return true; } type()41 virtual OperationType type() const OVERRIDE { return Identity; } 42 43 virtual bool operator==(const TransformOperation& o) const 44 { 45 return isSameType(o); 46 } 47 apply(TransformationMatrix &,const FloatSize &)48 virtual void apply(TransformationMatrix&, const FloatSize&) const { } 49 50 virtual PassRefPtr<TransformOperation> blend(const TransformOperation*, double, bool = false) 51 { 52 return this; 53 } 54 IdentityTransformOperation()55 IdentityTransformOperation() 56 { 57 } 58 59 }; 60 61 } // namespace WebCore 62 63 #endif // IdentityTransformOperation_h 64