gecko-dev/gfx/thebes/gfxPlatformGtk.h

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/* -*- 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;
class gfxPlatformGtk : public gfxPlatform {
public:
gfxPlatformGtk();
virtual ~gfxPlatformGtk();
static gfxPlatformGtk *GetPlatform() {
return (gfxPlatformGtk*) gfxPlatform::GetPlatform();
}
virtual already_AddRefed<gfxASurface>
CreateOffscreenSurface(const IntSize& aSize,
gfxImageFormat aFormat) override;
virtual already_AddRefed<mozilla::gfx::ScaledFont>
GetScaledFontForFont(mozilla::gfx::DrawTarget* aTarget, gfxFont *aFont) override;
virtual nsresult GetFontList(nsIAtom *aLangGroup,
const nsACString& aGenericFamily,
nsTArray<nsString>& aListOfFonts) override;
virtual nsresult UpdateFontList() override;
virtual void
GetCommonFallbackFonts(uint32_t aCh, uint32_t aNextCh,
int32_t aRunScript,
nsTArray<const char*>& aFontList) override;
virtual gfxPlatformFontList* CreatePlatformFontList() override;
virtual nsresult GetStandardFamilyName(const nsAString& aFontName,
nsAString& aFamilyName) override;
virtual gfxFontGroup* CreateFontGroup(const mozilla::FontFamilyList& aFontFamilyList,
const gfxFontStyle *aStyle,
gfxUserFontSet *aUserFontSet) override;
/**
* Look up a local platform font using the full font face name (needed to
* support @font-face src local() )
*/
virtual gfxFontEntry* LookupLocalFont(const nsAString& aFontName,
uint16_t aWeight,
int16_t aStretch,
bool aItalic) override;
/**
* Activate a platform font (needed to support @font-face src url() )
*
*/
virtual gfxFontEntry* MakePlatformFont(const nsAString& aFontName,
uint16_t aWeight,
int16_t aStretch,
bool aItalic,
const uint8_t* aFontData,
uint32_t aLength) override;
/**
* Check whether format is supported on a platform or not (if unclear,
* returns true).
*/
virtual bool IsFontFormatSupported(nsIURI *aFontURI,
uint32_t aFormatFlags) override;
/**
* Calls XFlush if xrender is enabled.
*/
virtual void FlushContentDrawing() override;
#if (MOZ_WIDGET_GTK == 2)
static void SetGdkDrawable(cairo_surface_t *target,
GdkDrawable *drawable);
static GdkDrawable *GetGdkDrawable(cairo_surface_t *target);
#endif
static int32_t GetDPI();
static double GetDPIScale();
bool UseXRender() {
#if defined(MOZ_X11)
if (GetContentBackend() != mozilla::gfx::BackendType::NONE &&
GetContentBackend() != mozilla::gfx::BackendType::CAIRO)
return false;
return sUseXRender;
#else
return false;
#endif
}
#ifdef MOZ_X11
virtual void GetAzureBackendInfo(mozilla::widget::InfoObject &aObj) override {
gfxPlatform::GetAzureBackendInfo(aObj);
aObj.DefineProperty("CairoUseXRender", UseXRender());
}
#endif
static bool UseFcFontList() { return sUseFcFontList; }
bool UseImageOffscreenSurfaces();
virtual gfxImageFormat GetOffscreenFormat() override;
virtual int GetScreenDepth() const override;
bool SupportsApzWheelInput() const override {
return true;
}
protected:
static gfxFontconfigUtils *sFontconfigUtils;
private:
virtual void GetPlatformCMSOutputProfile(void *&mem,
size_t &size) override;
#ifdef MOZ_X11
static bool sUseXRender;
#endif
// xxx - this will be removed once the new fontconfig platform font list
// replaces gfxPangoFontGroup
static bool sUseFcFontList;
};
#endif /* GFX_PLATFORM_GTK_H */