The Tor Browser: layout/svg/SVGFEUnstyledLeafFrame.cpp@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 // Keep in (case-insensitive) order:

     7 #include "nsFrame.h"

     8 #include "nsGkAtoms.h"

     9 #include "nsSVGEffects.h"

    10 #include "nsSVGFilters.h"

    12 typedef nsFrame SVGFEUnstyledLeafFrameBase;

    14 class SVGFEUnstyledLeafFrame : public SVGFEUnstyledLeafFrameBase

    15 {

    16   friend nsIFrame*

    17   NS_NewSVGFEUnstyledLeafFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);

    18 protected:

    19   SVGFEUnstyledLeafFrame(nsStyleContext* aContext)

    20     : SVGFEUnstyledLeafFrameBase(aContext)

    21   {

    22     AddStateBits(NS_FRAME_SVG_LAYOUT | NS_FRAME_IS_NONDISPLAY);

    23   }

    25 public:

    26   NS_DECL_FRAMEARENA_HELPERS

    28   virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,

    29                               const nsRect&           aDirtyRect,

    30                               const nsDisplayListSet& aLists) MOZ_OVERRIDE {}

    32   virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE

    33   {

    34     return SVGFEUnstyledLeafFrameBase::IsFrameOfType(aFlags & ~(nsIFrame::eSVG));

    35   }

    37 #ifdef DEBUG_FRAME_DUMP

    38   virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE

    39   {

    40     return MakeFrameName(NS_LITERAL_STRING("SVGFEUnstyledLeaf"), aResult);

    41   }

    42 #endif

    44   /**

    45    * Get the "type" of the frame

    46    *

    47    * @see nsGkAtoms::svgFEUnstyledLeafFrame

    48    */

    49   virtual nsIAtom* GetType() const MOZ_OVERRIDE;

    51   virtual nsresult AttributeChanged(int32_t  aNameSpaceID,

    52                                     nsIAtom* aAttribute,

    53                                     int32_t  aModType) MOZ_OVERRIDE;

    55   virtual bool UpdateOverflow() MOZ_OVERRIDE {

    56     // We don't maintain a visual overflow rect

    57     return false;

    58   }

    59 };

    61 nsIFrame*

    62 NS_NewSVGFEUnstyledLeafFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)

    63 {

    64   return new (aPresShell) SVGFEUnstyledLeafFrame(aContext);

    65 }

    67 NS_IMPL_FRAMEARENA_HELPERS(SVGFEUnstyledLeafFrame)

    69 nsIAtom *

    70 SVGFEUnstyledLeafFrame::GetType() const

    71 {

    72   return nsGkAtoms::svgFEUnstyledLeafFrame;

    73 }

    75 nsresult

    76 SVGFEUnstyledLeafFrame::AttributeChanged(int32_t  aNameSpaceID,

    77                                          nsIAtom* aAttribute,

    78                                          int32_t  aModType)

    79 {

    80   SVGFEUnstyledElement *element = static_cast<SVGFEUnstyledElement*>(mContent);

    81   if (element->AttributeAffectsRendering(aNameSpaceID, aAttribute)) {

    82     nsSVGEffects::InvalidateRenderingObservers(this);

    83   }

    85   return SVGFEUnstyledLeafFrameBase::AttributeChanged(aNameSpaceID,

    86                                                         aAttribute, aModType);

    87 }

The Tor Browser / file revision

layout/svg/SVGFEUnstyledLeafFrame.cpp@97036ab72558

layout/svg/SVGFEUnstyledLeafFrame.cpp