1 /* 2 * Copyright (C) 2007 Eric Seidel <eric@webkit.org> 3 * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org> 4 * Copyright (C) 2008 Rob Buis <buis@kde.org> 5 * Copyright (C) Research In Motion Limited 2011. All rights reserved. 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 SVGGlyph_h 24 #define SVGGlyph_h 25 26 #if ENABLE(SVG_FONTS) 27 #include "platform/PlatformExport.h" 28 #include "platform/fonts/Glyph.h" 29 #include "platform/graphics/Path.h" 30 31 #include <limits> 32 #include "wtf/text/WTFString.h" 33 #include "wtf/Vector.h" 34 35 namespace WebCore { 36 37 // Describe a glyph from a SVG Font. 38 struct SVGGlyph { 39 enum Orientation { 40 Vertical, 41 Horizontal, 42 Both 43 }; 44 45 // SVG Font depends on exactly this order. 46 enum ArabicForm { 47 None = 0, 48 Isolated, 49 Terminal, 50 Initial, 51 Medial 52 }; 53 SVGGlyphSVGGlyph54 SVGGlyph() 55 : isPartOfLigature(false) 56 , orientation(Both) 57 , arabicForm(None) 58 , priority(0) 59 , tableEntry(0) 60 , unicodeStringLength(0) 61 , horizontalAdvanceX(0) 62 , verticalOriginX(0) 63 , verticalOriginY(0) 64 , verticalAdvanceY(0) 65 { 66 } 67 68 // Used to mark our float properties as "to be inherited from SVGFontData" inheritedValueSVGGlyph69 static float inheritedValue() 70 { 71 static float s_inheritedValue = std::numeric_limits<float>::infinity(); 72 return s_inheritedValue; 73 } 74 75 bool operator==(const SVGGlyph& other) const 76 { 77 return isPartOfLigature == other.isPartOfLigature 78 && orientation == other.orientation 79 && arabicForm == other.arabicForm 80 && tableEntry == other.tableEntry 81 && unicodeStringLength == other.unicodeStringLength 82 && glyphName == other.glyphName 83 && horizontalAdvanceX == other.horizontalAdvanceX 84 && verticalOriginX == other.verticalOriginX 85 && verticalOriginY == other.verticalOriginY 86 && verticalAdvanceY == other.verticalAdvanceY 87 && languages == other.languages; 88 } 89 90 bool isPartOfLigature : 1; 91 92 unsigned orientation : 2; // Orientation 93 unsigned arabicForm : 3; // ArabicForm 94 int priority; 95 Glyph tableEntry; 96 size_t unicodeStringLength; 97 String glyphName; 98 99 float horizontalAdvanceX; 100 float verticalOriginX; 101 float verticalOriginY; 102 float verticalAdvanceY; 103 104 Path pathData; 105 Vector<String> languages; 106 }; 107 108 Vector<SVGGlyph::ArabicForm> PLATFORM_EXPORT charactersWithArabicForm(const String& input, bool rtl); 109 bool PLATFORM_EXPORT isCompatibleGlyph(const SVGGlyph&, bool isVerticalText, const String& language, const Vector<SVGGlyph::ArabicForm>&, unsigned startPosition, unsigned endPosition); 110 111 } // namespace WebCore 112 113 #endif // ENABLE(SVG_FONTS) 114 #endif 115