The Tor Browser: layout/svg/nsSVGPaintServerFrame.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: 2; 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 __NS_SVGPAINTSERVERFRAME_H__

     7 #define __NS_SVGPAINTSERVERFRAME_H__

     9 #include "mozilla/Attributes.h"

    10 #include "nsCOMPtr.h"

    11 #include "nsFrame.h"

    12 #include "nsIFrame.h"

    13 #include "nsQueryFrame.h"

    14 #include "nsSVGContainerFrame.h"

    15 #include "nsSVGUtils.h"

    17 class gfxContext;

    18 class gfxPattern;

    19 class nsStyleContext;

    21 struct gfxRect;

    23 typedef nsSVGContainerFrame nsSVGPaintServerFrameBase;

    25 class nsSVGPaintServerFrame : public nsSVGPaintServerFrameBase

    26 {

    27 protected:

    28   nsSVGPaintServerFrame(nsStyleContext* aContext)

    29     : nsSVGPaintServerFrameBase(aContext)

    30   {

    31     AddStateBits(NS_FRAME_IS_NONDISPLAY);

    32   }

    34 public:

    35   NS_DECL_FRAMEARENA_HELPERS

    37   /**

    38    * Constructs a gfxPattern of the paint server rendering.

    39    *

    40    * @param aContextMatrix The transform matrix that is currently applied to

    41    *   the gfxContext that is being drawn to. This is needed by SVG patterns so

    42    *   that surfaces of the correct size can be created. (SVG gradients are

    43    *   vector based, so it's not used there.)

    44    */

    45   virtual already_AddRefed<gfxPattern>

    46     GetPaintServerPattern(nsIFrame *aSource,

    47                           const gfxMatrix& aContextMatrix,

    48                           nsStyleSVGPaint nsStyleSVG::*aFillOrStroke,

    49                           float aOpacity,

    50                           const gfxRect *aOverrideBounds = nullptr) = 0;

    52   /**

    53    * Configure paint server prior to rendering

    54    * @return false to skip rendering

    55    */

    56   virtual bool SetupPaintServer(gfxContext *aContext,

    57                                 nsIFrame *aSource,

    58                                 nsStyleSVGPaint nsStyleSVG::*aFillOrStroke,

    59                                 float aOpacity);

    61   // nsIFrame methods:

    62   virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,

    63                                 const nsRect&           aDirtyRect,

    64                                 const nsDisplayListSet& aLists) MOZ_OVERRIDE {}

    66   virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE

    67   {

    68     return nsSVGPaintServerFrameBase::IsFrameOfType(aFlags & ~nsIFrame::eSVGPaintServer);

    69   }

    70 };

    72 #endif // __NS_SVGPAINTSERVERFRAME_H__

The Tor Browser / file revision

layout/svg/nsSVGPaintServerFrame.h@97036ab72558

layout/svg/nsSVGPaintServerFrame.h