1 /* 2 * Copyright (C) 2008 Apple Inc. All rights reserved. 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 COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef FontData_h 27 #define FontData_h 28 29 #include "platform/PlatformExport.h" 30 #include "wtf/FastAllocBase.h" 31 #include "wtf/Forward.h" 32 #include "wtf/Noncopyable.h" 33 #include "wtf/PassRefPtr.h" 34 #include "wtf/RefCounted.h" 35 #include "wtf/unicode/Unicode.h" 36 37 namespace WebCore { 38 39 class SimpleFontData; 40 41 class PLATFORM_EXPORT FontData : public RefCounted<FontData> { 42 WTF_MAKE_NONCOPYABLE(FontData); WTF_MAKE_FAST_ALLOCATED; 43 public: 44 FontData() 45 : m_maxGlyphPageTreeLevel(0) 46 { 47 } 48 49 virtual ~FontData(); 50 51 virtual const SimpleFontData* fontDataForCharacter(UChar32) const = 0; 52 virtual bool containsCharacters(const UChar*, int length) const = 0; 53 virtual bool isCustomFont() const = 0; 54 virtual bool isLoading() const = 0; 55 // Returns whether this is a temporary font data for a custom font which is not yet loaded. 56 virtual bool isLoadingFallback() const = 0; 57 virtual bool isSegmented() const = 0; 58 59 void setMaxGlyphPageTreeLevel(unsigned level) const { m_maxGlyphPageTreeLevel = level; } 60 unsigned maxGlyphPageTreeLevel() const { return m_maxGlyphPageTreeLevel; } 61 62 #ifndef NDEBUG 63 virtual String description() const = 0; 64 #endif 65 66 private: 67 mutable unsigned m_maxGlyphPageTreeLevel; 68 }; 69 70 } // namespace WebCore 71 72 #endif // FontData_h 73
