1 /* 2 Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org> 3 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org> 4 5 This library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Library General Public 7 License as published by the Free Software Foundation; either 8 version 2 of the License, or (at your option) any later version. 9 10 This library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Library General Public License for more details. 14 15 You should have received a copy of the GNU Library General Public License 16 along with this library; see the file COPYING.LIB. If not, write to 17 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 Boston, MA 02110-1301, USA. 19 */ 20 21 #ifndef SVGPreserveAspectRatio_h 22 #define SVGPreserveAspectRatio_h 23 24 #if ENABLE(SVG) 25 #include "FloatRect.h" 26 #include "PlatformString.h" 27 #include "SVGNames.h" 28 29 namespace WebCore { 30 31 class String; 32 class AffineTransform; 33 34 class SVGPreserveAspectRatio { 35 public: 36 enum SVGPreserveAspectRatioType { 37 SVG_PRESERVEASPECTRATIO_UNKNOWN = 0, 38 SVG_PRESERVEASPECTRATIO_NONE = 1, 39 SVG_PRESERVEASPECTRATIO_XMINYMIN = 2, 40 SVG_PRESERVEASPECTRATIO_XMIDYMIN = 3, 41 SVG_PRESERVEASPECTRATIO_XMAXYMIN = 4, 42 SVG_PRESERVEASPECTRATIO_XMINYMID = 5, 43 SVG_PRESERVEASPECTRATIO_XMIDYMID = 6, 44 SVG_PRESERVEASPECTRATIO_XMAXYMID = 7, 45 SVG_PRESERVEASPECTRATIO_XMINYMAX = 8, 46 SVG_PRESERVEASPECTRATIO_XMIDYMAX = 9, 47 SVG_PRESERVEASPECTRATIO_XMAXYMAX = 10 48 }; 49 50 enum SVGMeetOrSliceType { 51 SVG_MEETORSLICE_UNKNOWN = 0, 52 SVG_MEETORSLICE_MEET = 1, 53 SVG_MEETORSLICE_SLICE = 2 54 }; 55 56 SVGPreserveAspectRatio(); 57 virtual ~SVGPreserveAspectRatio(); 58 59 void setAlign(unsigned short); 60 unsigned short align() const; 61 62 void setMeetOrSlice(unsigned short); 63 unsigned short meetOrSlice() const; 64 65 void transformRect(FloatRect& destRect, FloatRect& srcRect); 66 67 AffineTransform getCTM(double logicX, double logicY, 68 double logicWidth, double logicHeight, 69 double physX, double physY, 70 double physWidth, double physHeight) const; 71 72 template<class Consumer> 73 static bool parsePreserveAspectRatio(Consumer* consumer, const String& value, bool validate = true) 74 { 75 bool result = false; 76 const UChar* begin = value.characters(); 77 const UChar* end = begin + value.length(); 78 consumer->setPreserveAspectRatioBaseValue(parsePreserveAspectRatio(begin, end, validate, result)); 79 return result; 80 } 81 82 // It's recommended to use the method above, only SVGViewSpec needs this parsing method 83 static SVGPreserveAspectRatio parsePreserveAspectRatio(const UChar*& currParam, const UChar* end, bool validate, bool& result); 84 85 String valueAsString() const; 86 87 private: 88 unsigned short m_align; 89 unsigned short m_meetOrSlice; 90 }; 91 92 } // namespace WebCore 93 94 #endif // ENABLE(SVG) 95 #endif // SVGPreserveAspectRatio_h 96