1 /* 2 * This file is part of the internal font implementation. It should not be included by anyone other than 3 * FontMac.cpp, FontWin.cpp and Font.cpp. 4 * 5 * Copyright (C) 2006 Apple Computer, Inc. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Library General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Library General Public License for more details. 16 * 17 * You should have received a copy of the GNU Library General Public License 18 * along with this library; see the file COPYING.LIB. If not, write to 19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 * Boston, MA 02110-1301, USA. 21 * 22 */ 23 24 // This file has no guards on purpose in order to detect redundant includes. This is a private header 25 // and so this may catch someone trying to include this file in public cpp files. 26 27 #include "FontSelector.h" 28 #include "SimpleFontData.h" 29 #include <wtf/Forward.h> 30 31 namespace WebCore { 32 33 class Font; 34 class GlyphPageTreeNode; 35 class GraphicsContext; 36 class IntRect; 37 class FontDescription; 38 class FontPlatformData; 39 class FontSelector; 40 41 const int cAllFamiliesScanned = -1; 42 43 class FontFallbackList : public RefCounted<FontFallbackList> { 44 public: create()45 static PassRefPtr<FontFallbackList> create() { return adoptRef(new FontFallbackList()); } 46 ~FontFallbackList()47 ~FontFallbackList() { releaseFontData(); } 48 void invalidate(PassRefPtr<FontSelector>); 49 isFixedPitch(const Font * f)50 bool isFixedPitch(const Font* f) const { if (m_pitch == UnknownPitch) determinePitch(f); return m_pitch == FixedPitch; }; 51 void determinePitch(const Font*) const; 52 loadingCustomFonts()53 bool loadingCustomFonts() const { return m_loadingCustomFonts; } 54 fontSelector()55 FontSelector* fontSelector() const { return m_fontSelector.get(); } generation()56 unsigned generation() const { return m_generation; } 57 58 private: 59 FontFallbackList(); 60 primarySimpleFontData(const Font * f)61 const SimpleFontData* primarySimpleFontData(const Font* f) 62 { 63 ASSERT(isMainThread()); 64 if (!m_cachedPrimarySimpleFontData) 65 m_cachedPrimarySimpleFontData = primaryFontData(f)->fontDataForCharacter(' '); 66 return m_cachedPrimarySimpleFontData; 67 } 68 primaryFontData(const Font * f)69 const FontData* primaryFontData(const Font* f) const { return fontDataAt(f, 0); } 70 const FontData* fontDataAt(const Font*, unsigned index) const; 71 const FontData* fontDataForCharacters(const Font*, const UChar*, int length) const; 72 73 void setPlatformFont(const FontPlatformData&); 74 75 void releaseFontData(); 76 77 mutable Vector<pair<const FontData*, bool>, 1> m_fontList; 78 mutable HashMap<int, GlyphPageTreeNode*> m_pages; 79 mutable GlyphPageTreeNode* m_pageZero; 80 mutable const SimpleFontData* m_cachedPrimarySimpleFontData; 81 RefPtr<FontSelector> m_fontSelector; 82 mutable int m_familyIndex; 83 mutable Pitch m_pitch; 84 mutable bool m_loadingCustomFonts; 85 unsigned m_generation; 86 87 friend class Font; 88 }; 89 90 } 91 92