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