1 /* 2 * Copyright (C) 2013 Google 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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef GenericFontFamilySettings_h 32 #define GenericFontFamilySettings_h 33 34 #include "platform/PlatformExport.h" 35 #include "wtf/HashMap.h" 36 #include "wtf/text/AtomicString.h" 37 #include "wtf/text/AtomicStringHash.h" 38 39 #include <unicode/uscript.h> 40 41 namespace blink { 42 43 class PLATFORM_EXPORT GenericFontFamilySettings { 44 WTF_MAKE_FAST_ALLOCATED; 45 46 public: 47 GenericFontFamilySettings() 48 { 49 } 50 51 explicit GenericFontFamilySettings(const GenericFontFamilySettings&); 52 53 bool updateStandard(const AtomicString&, UScriptCode = USCRIPT_COMMON); 54 const AtomicString& standard(UScriptCode = USCRIPT_COMMON) const; 55 56 bool updateFixed(const AtomicString&, UScriptCode = USCRIPT_COMMON); 57 const AtomicString& fixed(UScriptCode = USCRIPT_COMMON) const; 58 59 bool updateSerif(const AtomicString&, UScriptCode = USCRIPT_COMMON); 60 const AtomicString& serif(UScriptCode = USCRIPT_COMMON) const; 61 62 bool updateSansSerif(const AtomicString&, UScriptCode = USCRIPT_COMMON); 63 const AtomicString& sansSerif(UScriptCode = USCRIPT_COMMON) const; 64 65 bool updateCursive(const AtomicString&, UScriptCode = USCRIPT_COMMON); 66 const AtomicString& cursive(UScriptCode = USCRIPT_COMMON) const; 67 68 bool updateFantasy(const AtomicString&, UScriptCode = USCRIPT_COMMON); 69 const AtomicString& fantasy(UScriptCode = USCRIPT_COMMON) const; 70 71 bool updatePictograph(const AtomicString&, UScriptCode = USCRIPT_COMMON); 72 const AtomicString& pictograph(UScriptCode = USCRIPT_COMMON) const; 73 74 // Only called by InternalSettings to clear font family maps. 75 void reset(); 76 77 GenericFontFamilySettings& operator=(const GenericFontFamilySettings&); 78 79 private: 80 // UScriptCode uses -1 and 0 for UScriptInvalidCode and UScriptCommon. 81 // We need to use -2 and -3 for empty value and deleted value. 82 struct UScriptCodeHashTraits : WTF::GenericHashTraits<int> { 83 static const bool emptyValueIsZero = false; 84 static int emptyValue() { return -2; } 85 static void constructDeletedValue(int& slot, bool) { slot = -3; } 86 static bool isDeletedValue(int value) { return value == -3; } 87 }; 88 89 typedef HashMap<int, AtomicString, DefaultHash<int>::Hash, UScriptCodeHashTraits> ScriptFontFamilyMap; 90 91 void setGenericFontFamilyMap(ScriptFontFamilyMap&, const AtomicString&, UScriptCode); 92 const AtomicString& genericFontFamilyForScript(const ScriptFontFamilyMap&, UScriptCode) const; 93 94 ScriptFontFamilyMap m_standardFontFamilyMap; 95 ScriptFontFamilyMap m_serifFontFamilyMap; 96 ScriptFontFamilyMap m_fixedFontFamilyMap; 97 ScriptFontFamilyMap m_sansSerifFontFamilyMap; 98 ScriptFontFamilyMap m_cursiveFontFamilyMap; 99 ScriptFontFamilyMap m_fantasyFontFamilyMap; 100 ScriptFontFamilyMap m_pictographFontFamilyMap; 101 }; 102 103 } // namespace blink 104 105 #endif 106
