gfx/thebes/gfxMacPlatformFontList.h

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
   2  * ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
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   8  * http://www.mozilla.org/MPL/
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  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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  13  * License.
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  15  * The Original Code is Mozilla Corporation code.
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  17  * The Initial Developer of the Original Code is Mozilla Foundation.
  18  * Portions created by the Initial Developer are Copyright (C) 2006-2009
  19  * the Initial Developer. All Rights Reserved.
  20  *
  21  * Contributor(s):
  22  *   Vladimir Vukicevic <vladimir@pobox.com>
  23  *   Masayuki Nakano <masayuki@d-toybox.com>
  24  *   John Daggett <jdaggett@mozilla.com>
  25  *   Jonathan Kew <jfkthame@gmail.com>
  26  *
  27  * Alternatively, the contents of this file may be used under the terms of
  28  * either the GNU General Public License Version 2 or later (the "GPL"), or
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  36  * the provisions above, a recipient may use your version of this file under
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  39  * ***** END LICENSE BLOCK ***** */
  40
  41 #ifndef gfxMacPlatformFontList_H_
  42 #define gfxMacPlatformFontList_H_
  43
  44 #include "nsDataHashtable.h"
  45 #include "nsRefPtrHashtable.h"
  46
  47 #include "gfxPlatformFontList.h"
  48 #include "gfxPlatform.h"
  49
  50 #include <Carbon/Carbon.h>
  51
  52 #include "nsUnicharUtils.h"
  53 #include "nsTArray.h"
  54
  55 class gfxMacPlatformFontList;
  56
  57 // a single member of a font family (i.e. a single face, such as Times Italic)
  58 class MacOSFontEntry : public gfxFontEntry
  59 {
  60 public:
  61     friend class gfxMacPlatformFontList;
  62
  63     MacOSFontEntry(const nsAString& aPostscriptName, PRInt32 aWeight,
  64                    gfxFontFamily *aFamily, PRBool aIsStandardFace = PR_FALSE);
  65
  66     ATSFontRef GetFontRef();
  67     nsresult ReadCMAP();
  68
  69     PRBool RequiresAATLayout() const { return mRequiresAAT; }
  70
  71     virtual nsresult GetFontTable(PRUint32 aTableTag, FallibleTArray<PRUint8>& aBuffer);
  72
  73     PRBool IsCFF();
  74
  75 protected:
  76     // for use with data fonts
  77     MacOSFontEntry(const nsAString& aPostscriptName, ATSFontRef aFontRef,
  78                    PRUint16 aWeight, PRUint16 aStretch, PRUint32 aItalicStyle,
  79                    gfxUserFontData *aUserFontData);
  80
  81     virtual gfxFont* CreateFontInstance(const gfxFontStyle *aFontStyle, PRBool aNeedsBold);
  82
  83     ATSFontRef mATSFontRef;
  84     PRPackedBool mATSFontRefInitialized;
  85     PRPackedBool mRequiresAAT;
  86     PRPackedBool mIsCFF;
  87     PRPackedBool mIsCFFInitialized;
  88 };
  89
  90 class gfxMacPlatformFontList : public gfxPlatformFontList {
  91 public:
  92     static gfxMacPlatformFontList* PlatformFontList() {
  93         return static_cast<gfxMacPlatformFontList*>(sPlatformFontList);
  94     }
  95
  96     static PRInt32 AppleWeightToCSSWeight(PRInt32 aAppleWeight);
  97
  98     virtual gfxFontEntry* GetDefaultFont(const gfxFontStyle* aStyle, PRBool& aNeedsBold);
  99
 100     virtual PRBool GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName);
 101
 102     virtual gfxFontEntry* LookupLocalFont(const gfxProxyFontEntry *aProxyEntry,
 103                                           const nsAString& aFontName);
 104
 105     virtual gfxFontEntry* MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
 106                                            const PRUint8 *aFontData, PRUint32 aLength);
 107
 108     void ClearPrefFonts() { mPrefFonts.Clear(); }
 109
 110 private:
 111     friend class gfxPlatformMac;
 112
 113     gfxMacPlatformFontList();
 114
 115     // initialize font lists
 116     virtual nsresult InitFontList();
 117
 118     // special case font faces treated as font families (set via prefs)
 119     void InitSingleFaceList();
 120
 121     // eliminate faces which have the same ATS font reference
 122     void EliminateDuplicateFaces(const nsAString& aFamilyName);
 123
 124     static void ATSNotification(ATSFontNotificationInfoRef aInfo, void* aUserArg);
 125
 126     // keep track of ATS generation to prevent unneeded updates when loading downloaded fonts
 127     PRUint32 mATSGeneration;
 128
 129     enum {
 130         kATSGenerationInitial = -1
 131     };
 132 };
 133
 134 #endif /* gfxMacPlatformFontList_H_ */