gecko-dev/gfx/thebes/gfxOS2Platform.h

66 строки
2.2 KiB
C++

/* vim: set sw=4 sts=4 et cin: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef GFX_OS2_PLATFORM_H
#define GFX_OS2_PLATFORM_H
#define INCL_GPIBITMAPS
#include <os2.h>
#include "gfxPlatform.h"
#include "gfxOS2Fonts.h"
#include "gfxFontUtils.h"
#include "nsTArray.h"
class gfxFontconfigUtils;
class gfxOS2Platform : public gfxPlatform {
public:
gfxOS2Platform();
virtual ~gfxOS2Platform();
static gfxOS2Platform *GetPlatform() {
return (gfxOS2Platform*) gfxPlatform::GetPlatform();
}
already_AddRefed<gfxASurface>
CreateOffscreenSurface(const gfxIntSize& size,
gfxContentType contentType);
nsresult GetFontList(nsIAtom *aLangGroup,
const nsACString& aGenericFamily,
nsTArray<nsString>& aListOfFonts);
nsresult UpdateFontList();
nsresult ResolveFontName(const nsAString& aFontName,
FontResolverCallback aCallback,
void *aClosure, bool& aAborted);
nsresult GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName);
gfxFontGroup *CreateFontGroup(const nsAString &aFamilies,
const gfxFontStyle *aStyle,
gfxUserFontSet *aUserFontSet);
// Given a string and a font we already have, find the font that
// supports the most code points and most closely resembles aFont.
// This simple version involves looking at the fonts on the machine to see
// which code points they support.
already_AddRefed<gfxOS2Font> FindFontForChar(uint32_t aCh, gfxOS2Font *aFont);
// return true if it's already known that we don't have a font for this char
bool noFontWithChar(uint32_t aCh) {
return mCodepointsWithNoFonts.test(aCh);
}
protected:
static gfxFontconfigUtils *sFontconfigUtils;
private:
// when font lookup fails for a character, cache it to skip future searches
gfxSparseBitSet mCodepointsWithNoFonts;
};
#endif /* GFX_OS2_PLATFORM_H */