gfx/thebes/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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  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 #include "nsTArray.h"
  48
  49 class gfxFontconfigUtils;
  50
  51 class THEBES_API gfxOS2Platform : public gfxPlatform {
  52
  53 public:
  54     gfxOS2Platform();
  55     virtual ~gfxOS2Platform();
  56
  57     static gfxOS2Platform *GetPlatform() {
  58         return (gfxOS2Platform*) gfxPlatform::GetPlatform();
  59     }
  60
  61     already_AddRefed<gfxASurface>
  62         CreateOffscreenSurface(const gfxIntSize& size,
  63                                gfxASurface::gfxImageFormat imageFormat);
  64
  65     nsresult GetFontList(nsIAtom *aLangGroup,
  66                          const nsACString& aGenericFamily,
  67                          nsTArray<nsString>& aListOfFonts);
  68     nsresult UpdateFontList();
  69     nsresult ResolveFontName(const nsAString& aFontName,
  70                              FontResolverCallback aCallback,
  71                              void *aClosure, PRBool& aAborted);
  72     nsresult GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName);
  73
  74     gfxFontGroup *CreateFontGroup(const nsAString &aFamilies,
  75                                   const gfxFontStyle *aStyle,
  76                                   gfxUserFontSet *aUserFontSet);
  77
  78     // Given a string and a font we already have, find the font that
  79     // supports the most code points and most closely resembles aFont.
  80     // This simple version involves looking at the fonts on the machine to see
  81     // which code points they support.
  82     already_AddRefed<gfxOS2Font> FindFontForChar(PRUint32 aCh, gfxOS2Font *aFont);
  83
  84     // return true if it's already known that we don't have a font for this char
  85     PRBool noFontWithChar(PRUint32 aCh) {
  86         return mCodepointsWithNoFonts.test(aCh);
  87     }
  88
  89 protected:
  90     void InitDisplayCaps();
  91
  92     static gfxFontconfigUtils *sFontconfigUtils;
  93
  94 private:
  95     // when font lookup fails for a character, cache it to skip future searches
  96     gfxSparseBitSet mCodepointsWithNoFonts;
  97 };
  98
  99 #endif /* GFX_OS2_PLATFORM_H */