The Tor Browser: gfx/skia/trunk/src/gpu/GrDistanceFieldTextContext.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 /*

     2  * Copyright 2013 Google Inc.

     3  *

     4  * Use of this source code is governed by a BSD-style license that can be

     5  * found in the LICENSE file.

     6  */

     8 #ifndef GrDistanceFieldTextContext_DEFINED

     9 #define GrDistanceFieldTextContext_DEFINED

    11 #include "GrTextContext.h"

    13 class GrTextStrike;

    15 /*

    16  * This class implements GrTextContext using distance field fonts

    17  */

    18 class GrDistanceFieldTextContext : public GrTextContext {

    19 public:

    20     GrDistanceFieldTextContext(GrContext*, const SkDeviceProperties&);

    21     virtual ~GrDistanceFieldTextContext();

    23     virtual void drawText(const GrPaint&, const SkPaint&, const char text[], size_t byteLength,

    24                           SkScalar x, SkScalar y) SK_OVERRIDE;

    25     virtual void drawPosText(const GrPaint&, const SkPaint&,

    26                              const char text[], size_t byteLength,

    27                              const SkScalar pos[], SkScalar constY,

    28                              int scalarsPerPosition) SK_OVERRIDE;

    30     virtual bool canDraw(const SkPaint& paint) SK_OVERRIDE;

    32 private:

    33     GrTextStrike*           fStrike;

    34     SkScalar                fTextRatio;

    36     void init(const GrPaint&, const SkPaint&);

    37     void drawPackedGlyph(GrGlyph::PackedID, GrFixed left, GrFixed top, GrFontScaler*);

    38     void flushGlyphs();                 // automatically called by destructor

    39     void finish();

    41     enum {

    42         kMinRequestedGlyphs      = 1,

    43         kDefaultRequestedGlyphs  = 64,

    44         kMinRequestedVerts       = kMinRequestedGlyphs * 4,

    45         kDefaultRequestedVerts   = kDefaultRequestedGlyphs * 4,

    46     };

    48     SkPoint*                fVertices;

    49     int32_t                 fMaxVertices;

    50     GrTexture*              fCurrTexture;

    51     int                     fCurrVertex;

    52 };

    54 #endif

The Tor Browser / file revision

gfx/skia/trunk/src/gpu/GrDistanceFieldTextContext.h@97036ab72558

gfx/skia/trunk/src/gpu/GrDistanceFieldTextContext.h