The Tor Browser: gfx/skia/trunk/src/gpu/GrAtlas.h@129ffea94266

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

     2 /*

     3  * Copyright 2010 Google Inc.

     4  *

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

     6  * found in the LICENSE file.

     7  */

     9 #ifndef GrAtlas_DEFINED

    10 #define GrAtlas_DEFINED

    13 #include "GrPoint.h"

    14 #include "GrTexture.h"

    15 #include "GrDrawTarget.h"

    17 class GrGpu;

    18 class GrRectanizer;

    19 class GrAtlasMgr;

    20 class GrAtlas;

    22 // The backing GrTexture for a set of GrAtlases is broken into a spatial grid of GrPlots. When

    23 // a GrAtlas needs space on the texture, it requests a GrPlot. Each GrAtlas can claim one

    24 // or more GrPlots. The GrPlots keep track of subimage placement via their GrRectanizer. Once a

    25 // GrPlot is "full" (i.e. there is no room for the new subimage according to the GrRectanizer), the

    26 // GrAtlas can request a new GrPlot via GrAtlasMgr::addToAtlas().

    27 //

    28 // If all GrPlots are allocated, the replacement strategy is up to the client. The drawToken is

    29 // available to ensure that all draw calls are finished for that particular GrPlot.

    30 // GrAtlasMgr::removeUnusedPlots() will free up any finished plots for a given GrAtlas.

    32 class GrPlot {

    33 public:

    34     SK_DECLARE_INTERNAL_LLIST_INTERFACE(GrPlot);

    36     int getOffsetX() const { return fOffset.fX; }

    37     int getOffsetY() const { return fOffset.fY; }

    39     GrTexture* texture() const { return fTexture; }

    41     bool addSubImage(int width, int height, const void*, GrIPoint16*);

    43     GrDrawTarget::DrawToken drawToken() const { return fDrawToken; }

    44     void setDrawToken(GrDrawTarget::DrawToken draw) { fDrawToken = draw; }

    46     void resetRects();

    48 private:

    49     GrPlot();

    50     ~GrPlot(); // does not try to delete the fNext field

    52     // for recycling

    53     GrDrawTarget::DrawToken fDrawToken;

    55     GrTexture*              fTexture;

    56     GrRectanizer*           fRects;

    57     GrAtlasMgr*             fAtlasMgr;

    58     GrIPoint16              fOffset;

    59     size_t                  fBytesPerPixel;

    61     friend class GrAtlasMgr;

    62 };

    64 typedef SkTInternalLList<GrPlot> GrPlotList;

    66 class GrAtlasMgr {

    67 public:

    68     GrAtlasMgr(GrGpu*, GrPixelConfig);

    69     ~GrAtlasMgr();

    71     // add subimage of width, height dimensions to atlas

    72     // returns the containing GrPlot and location relative to the backing texture

    73     GrPlot* addToAtlas(GrAtlas*, int width, int height, const void*, GrIPoint16*);

    75     // remove reference to this plot

    76     bool removePlot(GrAtlas* atlas, const GrPlot* plot);

    78     // get a plot that's not being used by the current draw

    79     // this allows us to overwrite this plot without flushing

    80     GrPlot* getUnusedPlot();

    82     GrTexture* getTexture() const {

    83         return fTexture;

    84     }

    86 private:

    87     void moveToHead(GrPlot* plot);

    89     GrGpu*        fGpu;

    90     GrPixelConfig fPixelConfig;

    91     GrTexture*    fTexture;

    93     // allocated array of GrPlots

    94     GrPlot*       fPlotArray;

    95     // LRU list of GrPlots

    96     GrPlotList    fPlotList;

    97 };

    99 class GrAtlas {

   100 public:

   101     GrAtlas() { }

   102     ~GrAtlas() { }

   104     bool isEmpty() { return 0 == fPlots.count(); }

   106     SkISize getSize() const;

   108 private:

   109     SkTDArray<GrPlot*> fPlots;

   111     friend class GrAtlasMgr;

   112 };

   114 #endif

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gfx/skia/trunk/src/gpu/GrAtlas.h@129ffea94266

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