gfx/thebes/gfxOS2Platform.h

   1 /* vim: set sw=4 sts=4 et cin: */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef GFX_OS2_PLATFORM_H
   7 #define GFX_OS2_PLATFORM_H
   8
   9 #define INCL_GPIBITMAPS
  10 #include <os2.h>
  11
  12 #include "gfxPlatform.h"
  13 #include "gfxOS2Fonts.h"
  14 #include "gfxFontUtils.h"
  15 #include "nsTArray.h"
  16
  17 class gfxFontconfigUtils;
  18
  19 class gfxOS2Platform : public gfxPlatform {
  20
  21 public:
  22     gfxOS2Platform();
  23     virtual ~gfxOS2Platform();
  24
  25     static gfxOS2Platform *GetPlatform() {
  26         return (gfxOS2Platform*) gfxPlatform::GetPlatform();
  27     }
  28
  29     already_AddRefed<gfxASurface>
  30         CreateOffscreenSurface(const gfxIntSize& size,
  31                                gfxContentType contentType);
  32
  33     nsresult GetFontList(nsIAtom *aLangGroup,
  34                          const nsACString& aGenericFamily,
  35                          nsTArray<nsString>& aListOfFonts);
  36     nsresult UpdateFontList();
  37     nsresult ResolveFontName(const nsAString& aFontName,
  38                              FontResolverCallback aCallback,
  39                              void *aClosure, bool& aAborted);
  40     nsresult GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName);
  41
  42     gfxFontGroup *CreateFontGroup(const nsAString &aFamilies,
  43                                   const gfxFontStyle *aStyle,
  44                                   gfxUserFontSet *aUserFontSet);
  45
  46     // Given a string and a font we already have, find the font that
  47     // supports the most code points and most closely resembles aFont.
  48     // This simple version involves looking at the fonts on the machine to see
  49     // which code points they support.
  50     already_AddRefed<gfxOS2Font> FindFontForChar(uint32_t aCh, gfxOS2Font *aFont);
  51
  52     // return true if it's already known that we don't have a font for this char
  53     bool noFontWithChar(uint32_t aCh) {
  54         return mCodepointsWithNoFonts.test(aCh);
  55     }
  56
  57 protected:
  58     static gfxFontconfigUtils *sFontconfigUtils;
  59
  60 private:
  61     // when font lookup fails for a character, cache it to skip future searches
  62     gfxSparseBitSet mCodepointsWithNoFonts;
  63 };
  64
  65 #endif /* GFX_OS2_PLATFORM_H */