The Tor Browser: layout/svg/nsSVGPathGeometryFrame.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_SVGPATHGEOMETRYFRAME_H__

     7 #define __NS_SVGPATHGEOMETRYFRAME_H__

     9 #include "mozilla/Attributes.h"

    10 #include "gfxMatrix.h"

    11 #include "gfxRect.h"

    12 #include "nsFrame.h"

    13 #include "nsISVGChildFrame.h"

    14 #include "nsLiteralString.h"

    15 #include "nsQueryFrame.h"

    16 #include "nsSVGUtils.h"

    18 class gfxContext;

    19 class nsDisplaySVGPathGeometry;

    20 class nsIAtom;

    21 class nsIFrame;

    22 class nsIPresShell;

    23 class nsRenderingContext;

    24 class nsStyleContext;

    25 class nsSVGMarkerFrame;

    26 class nsSVGMarkerProperty;

    28 struct nsPoint;

    29 struct nsRect;

    30 struct nsIntRect;

    32 typedef nsFrame nsSVGPathGeometryFrameBase;

    34 class nsSVGPathGeometryFrame : public nsSVGPathGeometryFrameBase,

    35                                public nsISVGChildFrame

    36 {

    37   friend nsIFrame*

    38   NS_NewSVGPathGeometryFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);

    40   friend class nsDisplaySVGPathGeometry;

    42 protected:

    43   nsSVGPathGeometryFrame(nsStyleContext* aContext)

    44     : nsSVGPathGeometryFrameBase(aContext)

    45   {

    46      AddStateBits(NS_FRAME_SVG_LAYOUT | NS_FRAME_MAY_BE_TRANSFORMED);

    47   }

    49 public:

    50   NS_DECL_QUERYFRAME_TARGET(nsSVGPathGeometryFrame)

    51   NS_DECL_QUERYFRAME

    52   NS_DECL_FRAMEARENA_HELPERS

    54   // nsIFrame interface:

    55   virtual void Init(nsIContent* aContent,

    56                     nsIFrame* aParent,

    57                     nsIFrame* aPrevInFlow) MOZ_OVERRIDE;

    59   virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE

    60   {

    61     return nsSVGPathGeometryFrameBase::IsFrameOfType(aFlags & ~(nsIFrame::eSVG | nsIFrame::eSVGGeometry));

    62   }

    64   virtual nsresult  AttributeChanged(int32_t         aNameSpaceID,

    65                                      nsIAtom*        aAttribute,

    66                                      int32_t         aModType) MOZ_OVERRIDE;

    68   virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) MOZ_OVERRIDE;

    70   /**

    71    * Get the "type" of the frame

    72    *

    73    * @see nsGkAtoms::svgPathGeometryFrame

    74    */

    75   virtual nsIAtom* GetType() const MOZ_OVERRIDE;

    77   virtual bool IsSVGTransformed(Matrix *aOwnTransforms = nullptr,

    78                                 Matrix *aFromParentTransforms = nullptr) const MOZ_OVERRIDE;

    80 #ifdef DEBUG_FRAME_DUMP

    81   virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE

    82   {

    83     return MakeFrameName(NS_LITERAL_STRING("SVGPathGeometry"), aResult);

    84   }

    85 #endif

    87   virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,

    88                                 const nsRect&           aDirtyRect,

    89                                 const nsDisplayListSet& aLists) MOZ_OVERRIDE;

    91   // nsSVGPathGeometryFrame methods

    92   gfxMatrix GetCanvasTM(uint32_t aFor,

    93                         nsIFrame* aTransformRoot = nullptr);

    94 protected:

    95   // nsISVGChildFrame interface:

    96   virtual nsresult PaintSVG(nsRenderingContext *aContext,

    97                             const nsIntRect *aDirtyRect,

    98                             nsIFrame* aTransformRoot = nullptr) MOZ_OVERRIDE;

    99   virtual nsIFrame* GetFrameForPoint(const nsPoint &aPoint) MOZ_OVERRIDE;

   100   virtual nsRect GetCoveredRegion() MOZ_OVERRIDE;

   101   virtual void ReflowSVG() MOZ_OVERRIDE;

   102   virtual void NotifySVGChanged(uint32_t aFlags) MOZ_OVERRIDE;

   103   virtual SVGBBox GetBBoxContribution(const Matrix &aToBBoxUserspace,

   104                                       uint32_t aFlags) MOZ_OVERRIDE;

   105   virtual bool IsDisplayContainer() MOZ_OVERRIDE { return false; }

   107   void GeneratePath(gfxContext *aContext, const Matrix &aTransform);

   108   /**

   109    * This function returns a set of bit flags indicating which parts of the

   110    * element (fill, stroke, bounds) should intercept pointer events. It takes

   111    * into account the type of element and the value of the 'pointer-events'

   112    * property on the element.

   113    */

   114   virtual uint16_t GetHitTestFlags();

   115 private:

   116   enum { eRenderFill = 1, eRenderStroke = 2 };

   117   void Render(nsRenderingContext *aContext, uint32_t aRenderComponents,

   118               nsIFrame* aTransformRoot);

   119   void PaintMarkers(nsRenderingContext *aContext);

   121   struct MarkerProperties {

   122     nsSVGMarkerProperty* mMarkerStart;

   123     nsSVGMarkerProperty* mMarkerMid;

   124     nsSVGMarkerProperty* mMarkerEnd;

   126     bool MarkersExist() const {

   127       return mMarkerStart || mMarkerMid || mMarkerEnd;

   128     }

   130     nsSVGMarkerFrame *GetMarkerStartFrame();

   131     nsSVGMarkerFrame *GetMarkerMidFrame();

   132     nsSVGMarkerFrame *GetMarkerEndFrame();

   133   };

   135   /**

   136    * @param aFrame should be the first continuation

   137    */

   138   static MarkerProperties GetMarkerProperties(nsSVGPathGeometryFrame *aFrame);

   139 };

   141 #endif // __NS_SVGPATHGEOMETRYFRAME_H__

The Tor Browser / file revision

layout/svg/nsSVGPathGeometryFrame.h@97036ab72558

layout/svg/nsSVGPathGeometryFrame.h