gfx/thebes/gfxCoreTextShaper.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
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
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  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is thebes gfx code.
  16  *
  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
  29  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  30  * in which case the provisions of the GPL or the LGPL are applicable instead
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  36  * the provisions above, a recipient may use your version of this file under
  37  * the terms of any one of the MPL, the GPL or the LGPL.
  38  *
  39  * ***** END LICENSE BLOCK ***** */
  40
  41 #ifndef GFX_CORETEXTSHAPER_H
  42 #define GFX_CORETEXTSHAPER_H
  43
  44 #include "gfxTypes.h"
  45 #include "gfxFont.h"
  46 #include "gfxFontUtils.h"
  47 #include "gfxPlatform.h"
  48 #include "gfxMacPlatformFontList.h"
  49
  50 #include <Carbon/Carbon.h>
  51
  52 class gfxMacFont;
  53
  54 class gfxCoreTextShaper : public gfxFontShaper {
  55 public:
  56     gfxCoreTextShaper(gfxMacFont *aFont);
  57
  58     virtual ~gfxCoreTextShaper();
  59
  60     virtual PRBool InitTextRun(gfxContext *aContext,
  61                                gfxTextRun *aTextRun,
  62                                const PRUnichar *aString,
  63                                PRUint32 aRunStart,
  64                                PRUint32 aRunLength,
  65                                PRInt32 aRunScript);
  66
  67     // clean up static objects that may have been cached
  68     static void Shutdown();
  69
  70 protected:
  71     CTFontRef mCTFont;
  72     CFDictionaryRef mAttributesDict;
  73
  74     nsresult SetGlyphsFromRun(gfxTextRun *aTextRun,
  75                               CTRunRef aCTRun,
  76                               PRInt32 aStringOffset,
  77                               PRInt32 aLayoutStart,
  78                               PRInt32 aLayoutLength);
  79
  80     static void CreateDefaultFeaturesDescriptor();
  81
  82     static CTFontDescriptorRef GetDefaultFeaturesDescriptor() {
  83         if (sDefaultFeaturesDescriptor == NULL) {
  84             CreateDefaultFeaturesDescriptor();
  85         }
  86         return sDefaultFeaturesDescriptor;
  87     }
  88
  89     static CTFontRef CreateCTFontWithDisabledLigatures(ATSFontRef aFontRef, CGFloat aSize);
  90
  91     // cached font descriptor, created the first time it's needed
  92     static CTFontDescriptorRef    sDefaultFeaturesDescriptor;
  93
  94     // cached descriptor for adding disable-ligatures setting to a font
  95     static CTFontDescriptorRef    sDisableLigaturesDescriptor;
  96 };
  97
  98 #endif /* GFX_CORETEXTSHAPER_H */