1 /* 2 Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org> 3 2004, 2005, 2006 Rob Buis <buis@kde.org> 4 5 This file is part of the KDE project 6 7 This library is free software; you can redistribute it and/or 8 modify it under the terms of the GNU Library General Public 9 License as published by the Free Software Foundation; either 10 version 2 of the License, or (at your option) any later version. 11 12 This library is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 Library General Public License for more details. 16 17 You should have received a copy of the GNU Library General Public License 18 along with this library; see the file COPYING.LIB. If not, write to 19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 Boston, MA 02110-1301, USA. 21 */ 22 23 #ifndef SVGLength_h 24 #define SVGLength_h 25 26 #if ENABLE(SVG) 27 #include "PlatformString.h" 28 29 namespace WebCore { 30 31 enum SVGLengthType { 32 LengthTypeUnknown = 0, 33 LengthTypeNumber = 1, 34 LengthTypePercentage = 2, 35 LengthTypeEMS = 3, 36 LengthTypeEXS = 4, 37 LengthTypePX = 5, 38 LengthTypeCM = 6, 39 LengthTypeMM = 7, 40 LengthTypeIN = 8, 41 LengthTypePT = 9, 42 LengthTypePC = 10 43 }; 44 45 enum SVGLengthMode { 46 LengthModeWidth = 0, 47 LengthModeHeight, 48 LengthModeOther 49 }; 50 51 class SVGElement; 52 53 class SVGLength { 54 public: 55 // Forward declare these enums in the w3c naming scheme, for IDL generation 56 enum { 57 SVG_LENGTHTYPE_UNKNOWN = LengthTypeUnknown, 58 SVG_LENGTHTYPE_NUMBER = LengthTypeNumber, 59 SVG_LENGTHTYPE_PERCENTAGE = LengthTypePercentage, 60 SVG_LENGTHTYPE_EMS = LengthTypeEMS, 61 SVG_LENGTHTYPE_EXS = LengthTypeEXS, 62 SVG_LENGTHTYPE_PX = LengthTypePX, 63 SVG_LENGTHTYPE_CM = LengthTypeCM, 64 SVG_LENGTHTYPE_MM = LengthTypeMM, 65 SVG_LENGTHTYPE_IN = LengthTypeIN, 66 SVG_LENGTHTYPE_PT = LengthTypePT, 67 SVG_LENGTHTYPE_PC = LengthTypePC 68 }; 69 70 SVGLength(SVGLengthMode mode = LengthModeOther, const String& valueAsString = String()); 71 72 SVGLengthType unitType() const; 73 74 float value(const SVGElement* context) const; 75 void setValue(float); 76 77 float valueInSpecifiedUnits() const; 78 void setValueInSpecifiedUnits(float); 79 80 float valueAsPercentage() const; 81 82 String valueAsString() const; 83 bool setValueAsString(const String&); 84 85 void newValueSpecifiedUnits(unsigned short, float valueInSpecifiedUnits); 86 void convertToSpecifiedUnits(unsigned short, const SVGElement* context); 87 88 // Helper functions 89 static float PercentageOfViewport(float value, const SVGElement* context, SVGLengthMode); 90 isRelative()91 inline bool isRelative() const 92 { 93 SVGLengthType type = unitType(); 94 return (type == LengthTypePercentage || type == LengthTypeEMS || type == LengthTypeEXS); 95 } 96 97 private: 98 float m_valueInSpecifiedUnits; 99 unsigned int m_unit; 100 }; 101 102 } // namespace WebCore 103 104 #endif // ENABLE(SVG) 105 #endif // SVGLength_h 106