/* * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. * * 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. * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of * its contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY APPLE 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 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 GLYPH_MAP_H #define GLYPH_MAP_H #include <unicode/umachine.h> #include "GlyphBuffer.h" #include <wtf/Noncopyable.h> #include <wtf/HashMap.h> namespace WebCore { // Covers Latin-1. const unsigned cGlyphPageSize = 256; class FontData; struct GlyphData { Glyph glyph; const FontData* fontData; }; class GlyphMap : Noncopyable { public: GlyphMap() : m_filledPrimaryPage(false), m_pages(0) {} ~GlyphMap() { if (m_pages) { deleteAllValues(*m_pages); delete m_pages; } } GlyphData glyphDataForCharacter(UChar32, const FontData*); void setGlyphDataForCharacter(UChar32, Glyph, const FontData*); private: struct GlyphPage { GlyphData m_glyphs[cGlyphPageSize]; const GlyphData& glyphDataForCharacter(UChar32 c) const { return m_glyphs[c % cGlyphPageSize]; } void setGlyphDataForCharacter(UChar32 c, Glyph g, const FontData* f) { setGlyphDataForIndex(c % cGlyphPageSize, g, f); } void setGlyphDataForIndex(unsigned index, Glyph g, const FontData* f) { m_glyphs[index].glyph = g; m_glyphs[index].fontData = f; } }; GlyphPage* locatePage(unsigned page, const FontData* fontData); bool fillPage(GlyphPage*, UChar* characterBuffer, unsigned bufferLength, const FontData* fontData); bool m_filledPrimaryPage; GlyphPage m_primaryPage; // We optimize for the page that contains Latin1. HashMap<int, GlyphPage*>* m_pages; }; } #endif