1 /* 2 * Copyright (C) 2008 Nikolas Zimmermann <zimmermann (at) kde.org> 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 20 #ifndef SVGFontData_h 21 #define SVGFontData_h 22 23 #if ENABLE(SVG_FONTS) 24 #include "core/platform/graphics/SimpleFontData.h" 25 26 namespace WebCore { 27 28 class SVGFontElement; 29 class SVGFontFaceElement; 30 31 class SVGFontData : public SimpleFontData::AdditionalFontData { 32 public: 33 static PassOwnPtr<SVGFontData> create(SVGFontFaceElement* element) 34 { 35 return adoptPtr(new SVGFontData(element)); 36 } 37 38 virtual ~SVGFontData() { } 39 40 virtual void initializeFontData(SimpleFontData*, float fontSize); 41 virtual float widthForSVGGlyph(Glyph, float fontSize) const; 42 virtual bool fillSVGGlyphPage(GlyphPage*, unsigned offset, unsigned length, UChar* buffer, unsigned bufferLength, const SimpleFontData*) const; 43 virtual bool applySVGGlyphSelection(WidthIterator&, GlyphData&, bool mirror, int currentCharacter, unsigned& advanceLength) const; 44 45 SVGFontFaceElement* svgFontFaceElement() const { return m_svgFontFaceElement; } 46 47 float horizontalOriginX() const { return m_horizontalOriginX; } 48 float horizontalOriginY() const { return m_horizontalOriginY; } 49 float horizontalAdvanceX() const { return m_horizontalAdvanceX; } 50 51 float verticalOriginX() const { return m_verticalOriginX; } 52 float verticalOriginY() const { return m_verticalOriginY; } 53 float verticalAdvanceY() const { return m_verticalAdvanceY; } 54 55 private: 56 SVGFontData(SVGFontFaceElement*); 57 58 bool fillBMPGlyphs(SVGFontElement*, GlyphPage* , unsigned offset, unsigned length, UChar* buffer, const SimpleFontData*) const; 59 bool fillNonBMPGlyphs(SVGFontElement*, GlyphPage* , unsigned offset, unsigned length, UChar* buffer, const SimpleFontData*) const; 60 61 String createStringWithMirroredCharacters(const String&) const; 62 63 // Ths SVGFontFaceElement is kept alive -- 64 // 1) in the external font case: by the CSSFontFaceSource, which holds a reference to the external SVG document 65 // containing the element; 66 // 2) in the in-document font case: by virtue of being in the document tree and making sure that when it is removed 67 // from the document, it removes the @font-face rule it owns from the document's mapped element sheet and forces 68 // a style update. 69 SVGFontFaceElement* m_svgFontFaceElement; 70 71 float m_horizontalOriginX; 72 float m_horizontalOriginY; 73 float m_horizontalAdvanceX; 74 75 float m_verticalOriginX; 76 float m_verticalOriginY; 77 float m_verticalAdvanceY; 78 }; 79 80 } // namespace WebCore 81 82 #endif 83 #endif // SVGFontData_h 84
