gecko-dev/gfx/thebes/gfxPlatformGtk.h

141 lines
4.6 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* 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_PLATFORM_GTK_H
#define GFX_PLATFORM_GTK_H
#include "gfxPlatform.h"
#include "nsAutoRef.h"
#include "nsTArray.h"
#if (MOZ_WIDGET_GTK == 2)
extern "C" {
typedef struct _GdkDrawable GdkDrawable;
}
#endif
class gfxFontconfigUtils;
#ifndef MOZ_PANGO
class FontFamily;
class FontEntry;
typedef struct FT_LibraryRec_ *FT_Library;
#endif
class gfxPlatformGtk : public gfxPlatform {
public:
gfxPlatformGtk();
virtual ~gfxPlatformGtk();
static gfxPlatformGtk *GetPlatform() {
return (gfxPlatformGtk*) gfxPlatform::GetPlatform();
}
already_AddRefed<gfxASurface> CreateOffscreenSurface(const gfxIntSize& size,
gfxASurface::gfxContentType contentType);
mozilla::TemporaryRef<mozilla::gfx::ScaledFont>
GetScaledFontForFont(mozilla::gfx::DrawTarget* aTarget, gfxFont *aFont);
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);
#ifdef MOZ_PANGO
/**
* Look up a local platform font using the full font face name (needed to
* support @font-face src local() )
*/
virtual gfxFontEntry* LookupLocalFont(const gfxProxyFontEntry *aProxyEntry,
const nsAString& aFontName);
/**
* Activate a platform font (needed to support @font-face src url() )
*
*/
virtual gfxFontEntry* MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
const uint8_t *aFontData,
uint32_t aLength);
/**
* Check whether format is supported on a platform or not (if unclear,
* returns true).
*/
virtual bool IsFontFormatSupported(nsIURI *aFontURI,
uint32_t aFormatFlags);
#endif
#ifndef MOZ_PANGO
FontFamily *FindFontFamily(const nsAString& aName);
FontEntry *FindFontEntry(const nsAString& aFamilyName, const gfxFontStyle& aFontStyle);
already_AddRefed<gfxFont> FindFontForChar(uint32_t aCh, gfxFont *aFont);
bool GetPrefFontEntries(const nsCString& aLangGroup, nsTArray<nsRefPtr<gfxFontEntry> > *aFontEntryList);
void SetPrefFontEntries(const nsCString& aLangGroup, nsTArray<nsRefPtr<gfxFontEntry> >& aFontEntryList);
#endif
#ifndef MOZ_PANGO
FT_Library GetFTLibrary();
#endif
#if (MOZ_WIDGET_GTK == 2)
static void SetGdkDrawable(gfxASurface *target,
GdkDrawable *drawable);
static GdkDrawable *GetGdkDrawable(gfxASurface *target);
#endif
static int32_t GetDPI();
bool UseXRender() {
#if defined(MOZ_X11) && defined(MOZ_PLATFORM_MAEMO)
// XRender is not accelerated on the Maemo at the moment, and
// X server pixman is out of our control; it's likely to be
// older than (our) cairo's. So fall back on software
// rendering for more predictable performance.
// This setting will likely not be relevant when we have
// GL-accelerated compositing. We know of other platforms
// with bad drivers where we'd like to also use client side
// rendering, but until we have the ability to featuer test
// this, we'll only disable this for maemo.
return true;
#elif defined(MOZ_X11)
if (GetContentBackend() != mozilla::gfx::BACKEND_NONE &&
GetContentBackend() != mozilla::gfx::BACKEND_CAIRO)
return false;
return sUseXRender;
#else
return false;
#endif
}
virtual gfxImageFormat GetOffscreenFormat();
virtual int GetScreenDepth() const;
protected:
static gfxFontconfigUtils *sFontconfigUtils;
private:
virtual qcms_profile *GetPlatformCMSOutputProfile();
virtual bool SupportsOffMainThreadCompositing();
#ifdef MOZ_X11
static bool sUseXRender;
#endif
};
#endif /* GFX_PLATFORM_GTK_H */