1/* 2 * Copyright (C) 2007, 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 CSSFontFace_h 27#define CSSFontFace_h 28 29#include "CSSFontFaceRule.h" 30#include "CSSFontFaceSource.h" 31#include "FontTraitsMask.h" 32#include <wtf/Forward.h> 33#include <wtf/HashSet.h> 34#include <wtf/PassRefPtr.h> 35#include <wtf/RefCounted.h> 36#include <wtf/Vector.h> 37#include <wtf/unicode/Unicode.h> 38 39namespace WebCore { 40 41class CSSSegmentedFontFace; 42class FontDescription; 43class SimpleFontData; 44 45class CSSFontFace : public RefCounted<CSSFontFace> { 46public: 47 static PassRefPtr<CSSFontFace> create(FontTraitsMask traitsMask, PassRefPtr<CSSFontFaceRule> rule, bool isLocalFallback = false) { return adoptRef(new CSSFontFace(traitsMask, rule, isLocalFallback)); } 48 49 FontTraitsMask traitsMask() const { return m_traitsMask; } 50 51 struct UnicodeRange; 52 53 void addRange(UChar32 from, UChar32 to) { m_ranges.append(UnicodeRange(from, to)); } 54 const Vector<UnicodeRange>& ranges() const { return m_ranges; } 55 56 void addedToSegmentedFontFace(CSSSegmentedFontFace*); 57 void removedFromSegmentedFontFace(CSSSegmentedFontFace*); 58 59 bool isLoaded() const; 60 bool isValid() const; 61 62 bool isLocalFallback() const { return m_isLocalFallback; } 63 64 void addSource(PassOwnPtr<CSSFontFaceSource>); 65 66 void fontLoaded(CSSFontFaceSource*); 67 68 PassRefPtr<SimpleFontData> getFontData(const FontDescription&, bool syntheticBold, bool syntheticItalic); 69 70 struct UnicodeRange { 71 UnicodeRange(UChar32 from, UChar32 to) 72 : m_from(from) 73 , m_to(to) 74 { 75 } 76 77 UChar32 from() const { return m_from; } 78 UChar32 to() const { return m_to; } 79 80 private: 81 UChar32 m_from; 82 UChar32 m_to; 83 }; 84 85#if ENABLE(SVG_FONTS) 86 bool hasSVGFontFaceSource() const; 87#endif 88 89#if ENABLE(FONT_LOAD_EVENTS) 90 enum LoadState { NotLoaded, Loading, Loaded, Error }; 91 LoadState loadState() const { return m_loadState; } 92#endif 93 94private: 95 CSSFontFace(FontTraitsMask traitsMask, PassRefPtr<CSSFontFaceRule> rule, bool isLocalFallback) 96 : m_traitsMask(traitsMask) 97 , m_activeSource(0) 98 , m_isLocalFallback(isLocalFallback) 99#if ENABLE(FONT_LOAD_EVENTS) 100 , m_loadState(isLocalFallback ? Loaded : NotLoaded) 101 , m_rule(rule) 102#endif 103 { 104 UNUSED_PARAM(rule); 105 } 106 107 FontTraitsMask m_traitsMask; 108 Vector<UnicodeRange> m_ranges; 109 HashSet<CSSSegmentedFontFace*> m_segmentedFontFaces; 110 Vector<OwnPtr<CSSFontFaceSource> > m_sources; 111 CSSFontFaceSource* m_activeSource; 112 bool m_isLocalFallback; 113#if ENABLE(FONT_LOAD_EVENTS) 114 LoadState m_loadState; 115 RefPtr<CSSFontFaceRule> m_rule; 116 void notifyFontLoader(LoadState); 117 void notifyLoadingDone(); 118#endif 119}; 120 121} 122 123#endif 124