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 "core/platform/graphics/Glyph.h" 31 #include "wtf/HashMap.h" 32 #include "wtf/PassRefPtr.h" 33 #include "wtf/RefCounted.h" 34 #include "wtf/Vector.h" 35 36 namespace WebCore { 37 38 class FontPlatformData; 39 class GlyphPage; 40 class SimpleFontData; 41 42 class OpenTypeVerticalData : public RefCounted<OpenTypeVerticalData> { 43 public: 44 static PassRefPtr<OpenTypeVerticalData> create(const FontPlatformData& platformData) 45 { 46 return adoptRef(new OpenTypeVerticalData(platformData)); 47 } 48 49 bool isOpenType() const { return !m_advanceWidths.isEmpty(); } 50 bool hasVerticalMetrics() const { return !m_advanceHeights.isEmpty(); } 51 float advanceHeight(const SimpleFontData*, Glyph) const; 52 void getVerticalTranslationsForGlyphs(const SimpleFontData*, const Glyph*, size_t, float* outXYArray) const; 53 void substituteWithVerticalGlyphs(const SimpleFontData*, GlyphPage*, unsigned offset, unsigned length) const; 54 55 private: 56 explicit OpenTypeVerticalData(const FontPlatformData&); 57 58 void loadMetrics(const FontPlatformData&); 59 void loadVerticalGlyphSubstitutions(const FontPlatformData&); 60 bool hasVORG() const { return !m_vertOriginY.isEmpty(); } 61 62 HashMap<Glyph, Glyph> m_verticalGlyphMap; 63 Vector<uint16_t> m_advanceWidths; 64 Vector<uint16_t> m_advanceHeights; 65 Vector<int16_t> m_topSideBearings; 66 int16_t m_defaultVertOriginY; 67 HashMap<Glyph, int16_t> m_vertOriginY; 68 69 friend class FontCache; 70 bool m_inFontCache; // for mark & sweep in FontCache::purgeInactiveFontData() 71 }; 72 73 } // namespace WebCore 74 75 #endif // ENABLE(OPENTYPE_VERTICAL) 76 77 #endif // OpenTypeVerticalData_h 78
