The Tor Browser: gfx/thebes/gfxPlatformGtk.h@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-

     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/. */

     6 #ifndef GFX_PLATFORM_GTK_H

     7 #define GFX_PLATFORM_GTK_H

     9 #include "gfxPlatform.h"

    10 #include "nsAutoRef.h"

    11 #include "nsTArray.h"

    13 #if (MOZ_WIDGET_GTK == 2)

    14 extern "C" {

    15     typedef struct _GdkDrawable GdkDrawable;

    16 }

    17 #endif

    19 class gfxFontconfigUtils;

    21 class gfxPlatformGtk : public gfxPlatform {

    22 public:

    23     gfxPlatformGtk();

    24     virtual ~gfxPlatformGtk();

    26     static gfxPlatformGtk *GetPlatform() {

    27         return (gfxPlatformGtk*) gfxPlatform::GetPlatform();

    28     }

    30     virtual already_AddRefed<gfxASurface>

    31       CreateOffscreenSurface(const IntSize& size,

    32                              gfxContentType contentType) MOZ_OVERRIDE;

    34     mozilla::TemporaryRef<mozilla::gfx::ScaledFont>

    35       GetScaledFontForFont(mozilla::gfx::DrawTarget* aTarget, gfxFont *aFont);

    37     nsresult GetFontList(nsIAtom *aLangGroup,

    38                          const nsACString& aGenericFamily,

    39                          nsTArray<nsString>& aListOfFonts);

    41     nsresult UpdateFontList();

    43     nsresult ResolveFontName(const nsAString& aFontName,

    44                              FontResolverCallback aCallback,

    45                              void *aClosure, bool& aAborted);

    47     nsresult GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName);

    49     gfxFontGroup *CreateFontGroup(const nsAString &aFamilies,

    50                                   const gfxFontStyle *aStyle,

    51                                   gfxUserFontSet *aUserFontSet);

    53     /**

    54      * Look up a local platform font using the full font face name (needed to

    55      * support @font-face src local() )

    56      */

    57     virtual gfxFontEntry* LookupLocalFont(const gfxProxyFontEntry *aProxyEntry,

    58                                           const nsAString& aFontName);

    60     /**

    61      * Activate a platform font (needed to support @font-face src url() )

    62      *

    63      */

    64     virtual gfxFontEntry* MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,

    65                                            const uint8_t *aFontData,

    66                                            uint32_t aLength);

    68     /**

    69      * Check whether format is supported on a platform or not (if unclear,

    70      * returns true).

    71      */

    72     virtual bool IsFontFormatSupported(nsIURI *aFontURI,

    73                                          uint32_t aFormatFlags);

    75 #if (MOZ_WIDGET_GTK == 2)

    76     static void SetGdkDrawable(cairo_surface_t *target,

    77                                GdkDrawable *drawable);

    78     static GdkDrawable *GetGdkDrawable(cairo_surface_t *target);

    79 #endif

    81     static int32_t GetDPI();

    83     bool UseXRender() {

    84 #if defined(MOZ_X11)

    85         if (GetContentBackend() != mozilla::gfx::BackendType::NONE &&

    86             GetContentBackend() != mozilla::gfx::BackendType::CAIRO)

    87             return false;

    89         return sUseXRender;

    90 #else

    91         return false;

    92 #endif

    93     }

    95     virtual gfxImageFormat GetOffscreenFormat();

    97     virtual int GetScreenDepth() const;

    99 protected:

   100     static gfxFontconfigUtils *sFontconfigUtils;

   102 private:

   103     virtual void GetPlatformCMSOutputProfile(void *&mem, size_t &size);

   105     virtual bool SupportsOffMainThreadCompositing();

   106 #ifdef MOZ_X11

   107     static bool sUseXRender;

   108 #endif

   109 };

   111 #endif /* GFX_PLATFORM_GTK_H */

The Tor Browser / file revision

gfx/thebes/gfxPlatformGtk.h@97036ab72558

gfx/thebes/gfxPlatformGtk.h