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/*
* Copyright (C) 2012 Koji Ishii <kojiishi@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef OpenTypeVerticalData_h
#define OpenTypeVerticalData_h
#if ENABLE(OPENTYPE_VERTICAL)
#include "platform/fonts/Glyph.h"
#include "wtf/HashMap.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/Vector.h"
namespace WebCore {
class FontPlatformData;
class GlyphPage;
class SimpleFontData;
class OpenTypeVerticalData : public RefCounted<OpenTypeVerticalData> {
public:
static PassRefPtr<OpenTypeVerticalData> create(const FontPlatformData& platformData)
{
return adoptRef(new OpenTypeVerticalData(platformData));
}
bool isOpenType() const { return !m_advanceWidths.isEmpty(); }
bool hasVerticalMetrics() const { return !m_advanceHeights.isEmpty(); }
float advanceHeight(const SimpleFontData*, Glyph) const;
void getVerticalTranslationsForGlyphs(const SimpleFontData*, const Glyph*, size_t, float* outXYArray) const;
void substituteWithVerticalGlyphs(const SimpleFontData*, GlyphPage*, unsigned offset, unsigned length) const;
private:
explicit OpenTypeVerticalData(const FontPlatformData&);
void loadMetrics(const FontPlatformData&);
void loadVerticalGlyphSubstitutions(const FontPlatformData&);
bool hasVORG() const { return !m_vertOriginY.isEmpty(); }
HashMap<Glyph, Glyph> m_verticalGlyphMap;
Vector<uint16_t> m_advanceWidths;
Vector<uint16_t> m_advanceHeights;
Vector<int16_t> m_topSideBearings;
int16_t m_defaultVertOriginY;
HashMap<Glyph, int16_t> m_vertOriginY;
friend class FontCache;
bool m_inFontCache; // for mark & sweep in FontCache::purgeInactiveFontData()
};
} // namespace WebCore
#endif // ENABLE(OPENTYPE_VERTICAL)
#endif // OpenTypeVerticalData_h