1 /* 2 * Copyright (C) 2000 Lars Knoll (knoll (at) kde.org) 3 * (C) 2000 Antti Koivisto (koivisto (at) kde.org) 4 * (C) 2000 Dirk Mueller (mueller (at) kde.org) 5 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. 6 * Copyright (C) 2006 Graham Dennis (graham.dennis (at) 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 SkewTransformOperation_h 26 #define SkewTransformOperation_h 27 28 #include "TransformOperation.h" 29 30 namespace WebCore { 31 32 class SkewTransformOperation : public TransformOperation { 33 public: 34 static PassRefPtr<SkewTransformOperation> create(double angleX, double angleY, OperationType type) 35 { 36 return adoptRef(new SkewTransformOperation(angleX, angleY, type)); 37 } 38 39 double angleX() const { return m_angleX; } 40 double angleY() const { return m_angleY; } 41 42 private: 43 virtual bool isIdentity() const { return m_angleX == 0 && m_angleY == 0; } 44 virtual OperationType getOperationType() const { return m_type; } 45 virtual bool isSameType(const TransformOperation& o) const { return o.getOperationType() == m_type; } 46 47 virtual bool operator==(const TransformOperation& o) const 48 { 49 if (!isSameType(o)) 50 return false; 51 const SkewTransformOperation* s = static_cast<const SkewTransformOperation*>(&o); 52 return m_angleX == s->m_angleX && m_angleY == s->m_angleY; 53 } 54 55 virtual bool apply(TransformationMatrix& transform, const IntSize&) const 56 { 57 transform.skew(m_angleX, m_angleY); 58 return false; 59 } 60 61 virtual PassRefPtr<TransformOperation> blend(const TransformOperation* from, double progress, bool blendToIdentity = false); 62 63 SkewTransformOperation(double angleX, double angleY, OperationType type) 64 : m_angleX(angleX) 65 , m_angleY(angleY) 66 , m_type(type) 67 { 68 } 69 70 double m_angleX; 71 double m_angleY; 72 OperationType m_type; 73 }; 74 75 } // namespace WebCore 76 77 #endif // SkewTransformOperation_h 78
