gfx/thebes/public/gfxOS2Platform.h

   1 /* vim: set sw=4 sts=4 et cin: */
   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/
   9  *
  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 OS/2 code in Thebes.
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Peter Weilbacher <mozilla@Weilbacher.org>.
  19  * Portions created by the Initial Developer are Copyright (C) 2006
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *
  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either the GNU General Public License Version 2 or later (the "GPL"), or
  26  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  27  * in which case the provisions of the GPL or the LGPL are applicable instead
  28  * of those above. If you wish to allow use of your version of this file only
  29  * under the terms of either the GPL or the LGPL, and not to allow others to
  30  * use your version of this file under the terms of the MPL, indicate your
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  32  * and other provisions required by the GPL or the LGPL. If you do not delete
  33  * the provisions above, a recipient may use your version of this file under
  34  * the terms of any one of the MPL, the GPL or the LGPL.
  35  *
  36  * ***** END LICENSE BLOCK ***** */
  37
  38 #ifndef GFX_OS2_PLATFORM_H
  39 #define GFX_OS2_PLATFORM_H
  40
  41 #define INCL_GPIBITMAPS
  42 #include <os2.h>
  43
  44 #include "gfxPlatform.h"
  45 #include "gfxOS2Fonts.h"
  46 #include "gfxFontUtils.h"
  47
  48 class gfxFontconfigUtils;
  49
  50 class THEBES_API gfxOS2Platform : public gfxPlatform {
  51
  52 public:
  53     gfxOS2Platform();
  54     virtual ~gfxOS2Platform();
  55
  56     static gfxOS2Platform *GetPlatform() {
  57         return (gfxOS2Platform*) gfxPlatform::GetPlatform();
  58     }
  59
  60     already_AddRefed<gfxASurface>
  61         CreateOffscreenSurface(const gfxIntSize& size,
  62                                gfxASurface::gfxImageFormat imageFormat);
  63
  64     nsresult GetFontList(const nsACString& aLangGroup,
  65                          const nsACString& aGenericFamily,
  66                          nsStringArray& aListOfFonts);
  67     nsresult UpdateFontList();
  68     nsresult ResolveFontName(const nsAString& aFontName,
  69                              FontResolverCallback aCallback,
  70                              void *aClosure, PRBool& aAborted);
  71     nsresult GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName);
  72
  73     gfxFontGroup *CreateFontGroup(const nsAString &aFamilies,
  74                                   const gfxFontStyle *aStyle,
  75                                   gfxUserFontSet *aUserFontSet);
  76
  77     // Given a string and a font we already have, find the font that
  78     // supports the most code points and most closely resembles aFont.
  79     // This simple version involves looking at the fonts on the machine to see
  80     // which code points they support.
  81     already_AddRefed<gfxOS2Font> FindFontForChar(PRUint32 aCh, gfxOS2Font *aFont);
  82
  83     // return true if it's already known that we don't have a font for this char
  84     PRBool noFontWithChar(PRUint32 aCh) {
  85         return mCodepointsWithNoFonts.test(aCh);
  86     }
  87
  88 protected:
  89     static gfxFontconfigUtils *sFontconfigUtils;
  90
  91 private:
  92     // when font lookup fails for a character, cache it to skip future searches
  93     gfxSparseBitSet mCodepointsWithNoFonts;
  94 };
  95
  96 #endif /* GFX_OS2_PLATFORM_H */