The Tor Browser: gfx/2d/ScaledFontDWrite.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: 2 -*-

     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 MOZILLA_GFX_SCALEDFONTDWRITE_H_

     7 #define MOZILLA_GFX_SCALEDFONTDWRITE_H_

     9 #include <dwrite.h>

    10 #include "ScaledFontBase.h"

    12 struct ID2D1GeometrySink;

    14 namespace mozilla {

    15 namespace gfx {

    17 class ScaledFontDWrite MOZ_FINAL : public ScaledFontBase

    18 {

    19 public:

    20   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(ScaledFontDwrite)

    21   ScaledFontDWrite(IDWriteFontFace *aFont, Float aSize)

    22     : mFontFace(aFont)

    23     , ScaledFontBase(aSize)

    24   {}

    25   ScaledFontDWrite(uint8_t *aData, uint32_t aSize, uint32_t aIndex, Float aGlyphSize);

    27   virtual FontType GetType() const { return FontType::DWRITE; }

    29   virtual TemporaryRef<Path> GetPathForGlyphs(const GlyphBuffer &aBuffer, const DrawTarget *aTarget);

    30   virtual void CopyGlyphsToBuilder(const GlyphBuffer &aBuffer, PathBuilder *aBuilder, BackendType aBackendType, const Matrix *aTransformHint);

    32   void CopyGlyphsToSink(const GlyphBuffer &aBuffer, ID2D1GeometrySink *aSink);

    34   virtual bool GetFontFileData(FontFileDataOutput aDataCallback, void *aBaton);

    36   virtual AntialiasMode GetDefaultAAMode();

    38 #ifdef USE_SKIA

    39   virtual SkTypeface* GetSkTypeface()

    40   {

    41     MOZ_ASSERT(false, "Skia and DirectWrite do not mix");

    42     return nullptr;

    43   }

    44 #endif

    46   RefPtr<IDWriteFontFace> mFontFace;

    47 };

    49 class GlyphRenderingOptionsDWrite : public GlyphRenderingOptions

    50 {

    51 public:

    52   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(GlyphRenderingOptionsDWrite)

    53   GlyphRenderingOptionsDWrite(IDWriteRenderingParams *aParams)

    54     : mParams(aParams)

    55   {

    56   }

    58   virtual FontType GetType() const { return FontType::DWRITE; }

    60 private:

    61   friend class DrawTargetD2D;

    62   friend class DrawTargetD2D1;

    64   RefPtr<IDWriteRenderingParams> mParams;

    65 };

    67 }

    68 }

    70 #endif /* MOZILLA_GFX_SCALEDFONTDWRITE_H_ */

The Tor Browser / file revision

gfx/2d/ScaledFontDWrite.h@97036ab72558

gfx/2d/ScaledFontDWrite.h