| /* |
| * Copyright (C) 2007 Eric Seidel <eric@webkit.org> |
| * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) Research In Motion Limited 2010. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #ifndef SVGFontElement_h |
| #define SVGFontElement_h |
| |
| #if ENABLE(SVG_FONTS) |
| #include "core/SVGNames.h" |
| #include "core/svg/SVGAnimatedBoolean.h" |
| #include "core/svg/SVGElement.h" |
| #include "core/svg/SVGGlyphMap.h" |
| #include "core/svg/SVGParserUtilities.h" |
| |
| namespace blink { |
| |
| // Describe an SVG <hkern>/<vkern> element |
| struct SVGKerningPair { |
| float kerning; |
| UnicodeRanges unicodeRange1; |
| UnicodeRanges unicodeRange2; |
| HashSet<String> unicodeName1; |
| HashSet<String> unicodeName2; |
| HashSet<String> glyphName1; |
| HashSet<String> glyphName2; |
| |
| SVGKerningPair() |
| : kerning(0) |
| { |
| } |
| }; |
| |
| typedef unsigned KerningPairKey; |
| typedef Vector<SVGKerningPair> KerningPairVector; |
| typedef HashMap<KerningPairKey, float> KerningTable; |
| |
| class SVGFontElement FINAL : public SVGElement { |
| public: |
| DECLARE_NODE_FACTORY(SVGFontElement); |
| |
| void invalidateGlyphCache(); |
| void collectGlyphsForString(const String&, Vector<SVGGlyph>&); |
| void collectGlyphsForAltGlyphReference(const String&, Vector<SVGGlyph>&); |
| |
| float horizontalKerningForPairOfGlyphs(Glyph, Glyph) const; |
| float verticalKerningForPairOfGlyphs(Glyph, Glyph) const; |
| |
| // Used by SimpleFontData/WidthIterator. |
| SVGGlyph svgGlyphForGlyph(Glyph); |
| Glyph missingGlyph(); |
| |
| private: |
| explicit SVGFontElement(Document&); |
| |
| virtual bool rendererIsNeeded(const RenderStyle&) OVERRIDE { return false; } |
| |
| void ensureGlyphCache(); |
| void registerLigaturesInGlyphCache(Vector<String>&); |
| Vector<SVGGlyph> buildGlyphList(const UnicodeRanges&, const HashSet<String>& unicodeNames, const HashSet<String>& glyphNames) const; |
| void addPairsToKerningTable(const SVGKerningPair&, KerningTable&); |
| void buildKerningTable(const KerningPairVector&, KerningTable&); |
| |
| |
| KerningTable m_horizontalKerningTable; |
| KerningTable m_verticalKerningTable; |
| SVGGlyphMap m_glyphMap; |
| Glyph m_missingGlyph; |
| bool m_isGlyphCacheValid; |
| }; |
| |
| } // namespace blink |
| |
| #endif // ENABLE(SVG_FONTS) |
| #endif |