18e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project/* 28e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved. 38e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 48e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Redistribution and use in source and binary forms, with or without 58e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * modification, are permitted provided that the following conditions 68e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * are met: 78e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 88e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 1. Redistributions of source code must retain the above copyright 98e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * notice, this list of conditions and the following disclaimer. 108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * notice, this list of conditions and the following disclaimer in the 128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * documentation and/or other materials provided with the distribution. 138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * its contributors may be used to endorse or promote products derived 158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * from this software without specific prior written permission. 168e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 178e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 188e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 198e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 208e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 218e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 228e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 238e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 248e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 258e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 268e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 278e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project */ 288e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 298e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#ifndef GlyphPageTreeNode_h 308e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#define GlyphPageTreeNode_h 318e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 325f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian#include <string.h> 338e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include <wtf/HashMap.h> 348e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include <wtf/PassRefPtr.h> 358e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include <wtf/RefCounted.h> 368e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include <wtf/unicode/Unicode.h> 378e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 380bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch#ifndef NDEBUG 390bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdochvoid showGlyphPageTrees(); 400bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdochvoid showGlyphPageTree(unsigned pageNumber); 410bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch#endif 420bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch 438e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectnamespace WebCore { 448e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 458e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass FontData; 468e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass GlyphPageTreeNode; 478e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass SimpleFontData; 488e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 498e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projecttypedef unsigned short Glyph; 508e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 518e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// Holds the glyph index and the corresponding SimpleFontData information for a given 528e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// character. 538e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectstruct GlyphData { 545f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian GlyphData(Glyph g = 0, const SimpleFontData* f = 0) 555f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian : glyph(g) 565f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian , fontData(f) 575f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian { 585f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian } 598e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project Glyph glyph; 608e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project const SimpleFontData* fontData; 618e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project}; 628e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 638e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// A GlyphPage contains a fixed-size set of GlyphData mappings for a contiguous 648e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// range of characters in the Unicode code space. GlyphPages are indexed 658e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// starting from 0 and incrementing for each 256 glyphs. 668e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// 678e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// One page may actually include glyphs from other fonts if the characters are 685f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian// missing in the primary font. It is owned by exactly one GlyphPageTreeNode, 698e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// although multiple nodes may reference it as their "page" if they are supposed 708e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// to be overriding the parent's node, but provide no additional information. 715f1ab04193ad0130ca8204aadaceae083aca9881Feng Qianclass GlyphPage : public RefCounted<GlyphPage> { 725f1ab04193ad0130ca8204aadaceae083aca9881Feng Qianpublic: 738e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static PassRefPtr<GlyphPage> create(GlyphPageTreeNode* owner) 748e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { 758e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return adoptRef(new GlyphPage(owner)); 768e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 778e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 788e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static const size_t size = 256; // Covers Latin-1 in a single page. 798e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 805f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian unsigned indexForCharacter(UChar32 c) const { return c % size; } 815f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian GlyphData glyphDataForCharacter(UChar32 c) const 825f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian { 835f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian unsigned index = indexForCharacter(c); 845f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian return GlyphData(m_glyphs[index], m_glyphFontData[index]); 855f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian } 865f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian 875f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian GlyphData glyphDataForIndex(unsigned index) const 885f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian { 895f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian ASSERT(index < size); 905f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian return GlyphData(m_glyphs[index], m_glyphFontData[index]); 915f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian } 925f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian 935f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian Glyph glyphAt(unsigned index) const 945f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian { 955f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian ASSERT(index < size); 965f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian return m_glyphs[index]; 975f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian } 985f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian 995f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian const SimpleFontData* fontDataForCharacter(UChar32 c) const 1005f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian { 1015f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian return m_glyphFontData[indexForCharacter(c)]; 1025f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian } 1035f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian 1048e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project void setGlyphDataForCharacter(UChar32 c, Glyph g, const SimpleFontData* f) 1058e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { 1065f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian setGlyphDataForIndex(indexForCharacter(c), g, f); 1078e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 1088e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project void setGlyphDataForIndex(unsigned index, Glyph g, const SimpleFontData* f) 1098e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { 1108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project ASSERT(index < size); 1115f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian m_glyphs[index] = g; 1125f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian m_glyphFontData[index] = f; 1135f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian } 1145f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian void setGlyphDataForIndex(unsigned index, const GlyphData& glyphData) 1155f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian { 1165f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian setGlyphDataForIndex(index, glyphData.glyph, glyphData.fontData); 1175f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian } 1185f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian 1195f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian void copyFrom(const GlyphPage& other) 1205f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian { 1215f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian memcpy(m_glyphs, other.m_glyphs, sizeof(m_glyphs)); 1225f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian memcpy(m_glyphFontData, other.m_glyphFontData, sizeof(m_glyphFontData)); 1238e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 1245f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian 1255f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian void clear() 1265f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian { 1275f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian memset(m_glyphs, 0, sizeof(m_glyphs)); 1285f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian memset(m_glyphFontData, 0, sizeof(m_glyphFontData)); 1295f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian } 1305f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian 1318e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project GlyphPageTreeNode* owner() const { return m_owner; } 1328e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1338e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // Implemented by the platform. 1348e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool fill(unsigned offset, unsigned length, UChar* characterBuffer, unsigned bufferLength, const SimpleFontData*); 1358e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1368e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectprivate: 1378e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project GlyphPage(GlyphPageTreeNode* owner) 1388e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project : m_owner(owner) 1398e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { 1408e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 1415f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian 1425f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian // Separate arrays, rather than array of GlyphData, to save space. 1435f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian Glyph m_glyphs[size]; 1445f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian const SimpleFontData* m_glyphFontData[size]; 1455f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian 1465f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian GlyphPageTreeNode* m_owner; 1478e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project}; 1488e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1498e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// The glyph page tree is a data structure that maps (FontData, glyph page number) 1508e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// to a GlyphPage. Level 0 (the "root") is special. There is one root 1518e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// GlyphPageTreeNode for each glyph page number. The roots do not have a 1528e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// GlyphPage associated with them, and their initializePage() function is never 1538e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// called to fill the glyphs. 1548e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// 1558e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// Each root node maps a FontData pointer to another GlyphPageTreeNode at 1568e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// level 1 (the "root child") that stores the actual glyphs for a specific font data. 1578e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// These nodes will only have a GlyphPage if they have glyphs for that range. 1588e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// 1598e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// Levels greater than one correspond to subsequent levels of the fallback list 1608e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// for that font. These levels override their parent's page of glyphs by 1618e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// filling in holes with the new font (thus making a more complete page). 1628e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// 1638e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// A NULL FontData pointer corresponds to the system fallback 1648e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// font. It is tracked separately from the regular pages and overrides so that 1658e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// the glyph pages do not get polluted with these last-resort glyphs. The 1668e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// system fallback page is not populated at construction like the other pages, 1678e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// but on demand for each glyph, because the system may need to use different 1688e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project// fallback fonts for each. This lazy population is done by the Font. 1698e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass GlyphPageTreeNode { 1708e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectpublic: 1718e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project GlyphPageTreeNode() 1728e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project : m_parent(0) 1738e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project , m_level(0) 1748e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project , m_isSystemFallback(false) 1758e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project , m_customFontCount(0) 1766c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen , m_systemFallbackChild(0) 1778e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#ifndef NDEBUG 1788e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project , m_pageNumber(0) 1798e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#endif 1808e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { 1818e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 1828e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1838e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project ~GlyphPageTreeNode(); 1848e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1858e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static HashMap<int, GlyphPageTreeNode*>* roots; 1868e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static GlyphPageTreeNode* pageZeroRoot; 1878e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1888e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static GlyphPageTreeNode* getRootChild(const FontData* fontData, unsigned pageNumber) 1898e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { 1908e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return getRoot(pageNumber)->getChild(fontData, pageNumber); 1918e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 1928e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1938e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static void pruneTreeCustomFontData(const FontData*); 1948e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static void pruneTreeFontData(const SimpleFontData*); 1958e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1968e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project void pruneCustomFontData(const FontData*); 1978e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project void pruneFontData(const SimpleFontData*, unsigned level = 0); 1988e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 199852a85ba96877ec81137d97c77bce0afb3634968Russell Brenner#if PLATFORM(ANDROID) 200852a85ba96877ec81137d97c77bce0afb3634968Russell Brenner static void resetRoots(); 201852a85ba96877ec81137d97c77bce0afb3634968Russell Brenner void resetChildren(); 202852a85ba96877ec81137d97c77bce0afb3634968Russell Brenner#endif 203852a85ba96877ec81137d97c77bce0afb3634968Russell Brenner 2048e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project GlyphPageTreeNode* parent() const { return m_parent; } 2058e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project GlyphPageTreeNode* getChild(const FontData*, unsigned pageNumber); 2068e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2078e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // Returns a page of glyphs (or NULL if there are no glyphs in this page's character range). 2088e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project GlyphPage* page() const { return m_page.get(); } 2098e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // Returns the level of this node. See class-level comment. 2118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project unsigned level() const { return m_level; } 2128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // The system fallback font has special rules (see above). 2148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool isSystemFallback() const { return m_isSystemFallback; } 2158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2168e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static size_t treeGlyphPageCount(); 2178e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project size_t pageCount() const; 2188e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2198e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectprivate: 2208e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static GlyphPageTreeNode* getRoot(unsigned pageNumber); 2218e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project void initializePage(const FontData*, unsigned pageNumber); 2228e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2230bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch#ifndef NDEBUG 2240bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch void showSubtree(); 2250bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch#endif 2260bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch 2278e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project GlyphPageTreeNode* m_parent; 2288e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project RefPtr<GlyphPage> m_page; 2296c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen unsigned m_level : 31; 2306c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen bool m_isSystemFallback : 1; 2316c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen unsigned m_customFontCount; 2328e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project HashMap<const FontData*, GlyphPageTreeNode*> m_children; 2338e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project GlyphPageTreeNode* m_systemFallbackChild; 2348e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2358e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#ifndef NDEBUG 2368e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project unsigned m_pageNumber; 2370bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch 2380bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch friend void ::showGlyphPageTree(unsigned pageNumber); 2398e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#endif 2408e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project}; 2418e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2428e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} // namespace WebCore 2438e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2448e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#endif // GlyphPageTreeNode_h 245