1 /* 2 * Copyright (C) 2012 Koji Ishii <kojiishi (at) gmail.com> 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 */ 24 25 #ifndef OpenTypeVerticalData_h 26 #define OpenTypeVerticalData_h 27 28 #if ENABLE(OPENTYPE_VERTICAL) 29 30 #include "platform/PlatformExport.h" 31 #include "platform/fonts/Glyph.h" 32 #include "wtf/HashMap.h" 33 #include "wtf/PassRefPtr.h" 34 #include "wtf/RefCounted.h" 35 #include "wtf/Vector.h" 36 37 namespace WebCore { 38 39 class FontPlatformData; 40 class GlyphPage; 41 class SimpleFontData; 42 43 class PLATFORM_EXPORT OpenTypeVerticalData : public RefCounted<OpenTypeVerticalData> { 44 public: 45 static PassRefPtr<OpenTypeVerticalData> create(const FontPlatformData& platformData) 46 { 47 return adoptRef(new OpenTypeVerticalData(platformData)); 48 } 49 50 bool isOpenType() const { return !m_advanceWidths.isEmpty(); } 51 bool hasVerticalMetrics() const { return !m_advanceHeights.isEmpty(); } 52 float advanceHeight(const SimpleFontData*, Glyph) const; 53 void getVerticalTranslationsForGlyphs(const SimpleFontData*, const Glyph*, size_t, float* outXYArray) const; 54 void substituteWithVerticalGlyphs(const SimpleFontData*, GlyphPage*, unsigned offset, unsigned length) const; 55 56 bool inFontCache() const { return m_inFontCache; } 57 void setInFontCache(bool inFontCache) { m_inFontCache = inFontCache; } 58 59 private: 60 explicit OpenTypeVerticalData(const FontPlatformData&); 61 62 void loadMetrics(const FontPlatformData&); 63 void loadVerticalGlyphSubstitutions(const FontPlatformData&); 64 bool hasVORG() const { return !m_vertOriginY.isEmpty(); } 65 66 HashMap<Glyph, Glyph> m_verticalGlyphMap; 67 Vector<uint16_t> m_advanceWidths; 68 Vector<uint16_t> m_advanceHeights; 69 Vector<int16_t> m_topSideBearings; 70 int16_t m_defaultVertOriginY; 71 HashMap<Glyph, int16_t> m_vertOriginY; 72 73 bool m_inFontCache; // for mark & sweep in FontCache::purgeInactiveFontData() 74 }; 75 76 } // namespace WebCore 77 78 #endif // ENABLE(OPENTYPE_VERTICAL) 79 80 #endif // OpenTypeVerticalData_h 81
