The Tor Browser: gfx/layers/composite/ImageHost.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: 20; 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 MOZILLA_GFX_IMAGEHOST_H

     7 #define MOZILLA_GFX_IMAGEHOST_H

     9 #include <stdio.h>                      // for FILE

    10 #include "CompositableHost.h"           // for CompositableHost

    11 #include "mozilla/Attributes.h"         // for MOZ_OVERRIDE

    12 #include "mozilla/RefPtr.h"             // for RefPtr

    13 #include "mozilla/gfx/Point.h"          // for Point

    14 #include "mozilla/gfx/Rect.h"           // for Rect

    15 #include "mozilla/gfx/Types.h"          // for Filter

    16 #include "mozilla/layers/CompositorTypes.h"  // for TextureInfo, etc

    17 #include "mozilla/layers/LayersSurfaces.h"  // for SurfaceDescriptor

    18 #include "mozilla/layers/LayersTypes.h"  // for LayerRenderState, etc

    19 #include "mozilla/layers/TextureHost.h"  // for TextureHost, etc

    20 #include "mozilla/mozalloc.h"           // for operator delete

    21 #include "nsCOMPtr.h"                   // for already_AddRefed

    22 #include "nsRect.h"                     // for nsIntRect

    23 #include "nscore.h"                     // for nsACString

    25 class nsIntRegion;

    27 namespace mozilla {

    28 namespace gfx {

    29 class Matrix4x4;

    30 }

    31 namespace layers {

    33 class Compositor;

    34 class ISurfaceAllocator;

    35 struct EffectChain;

    37 /**

    38  * ImageHost. Works with ImageClientSingle and ImageClientBuffered

    39  */

    40 class ImageHost : public CompositableHost

    41 {

    42 public:

    43   ImageHost(const TextureInfo& aTextureInfo);

    44   ~ImageHost();

    46   virtual CompositableType GetType() { return mTextureInfo.mCompositableType; }

    48   virtual void Composite(EffectChain& aEffectChain,

    49                          float aOpacity,

    50                          const gfx::Matrix4x4& aTransform,

    51                          const gfx::Filter& aFilter,

    52                          const gfx::Rect& aClipRect,

    53                          const nsIntRegion* aVisibleRegion = nullptr,

    54                          TiledLayerProperties* aLayerProperties = nullptr) MOZ_OVERRIDE;

    56   virtual void UseTextureHost(TextureHost* aTexture) MOZ_OVERRIDE;

    58   virtual void RemoveTextureHost(TextureHost* aTexture) MOZ_OVERRIDE;

    60   virtual TextureHost* GetAsTextureHost() MOZ_OVERRIDE;

    62   virtual void SetCompositor(Compositor* aCompositor) MOZ_OVERRIDE;

    64   virtual void SetPictureRect(const nsIntRect& aPictureRect) MOZ_OVERRIDE

    65   {

    66     mPictureRect = aPictureRect;

    67     mHasPictureRect = true;

    68   }

    70   virtual LayerRenderState GetRenderState() MOZ_OVERRIDE;

    72   virtual void PrintInfo(nsACString& aTo, const char* aPrefix);

    74 #ifdef MOZ_DUMP_PAINTING

    75   virtual void Dump(FILE* aFile = nullptr,

    76                     const char* aPrefix = "",

    77                     bool aDumpHtml = false) MOZ_OVERRIDE;

    79   virtual TemporaryRef<gfx::DataSourceSurface> GetAsSurface() MOZ_OVERRIDE;

    80 #endif

    82 protected:

    84   RefPtr<TextureHost> mFrontBuffer;

    85   nsIntRect mPictureRect;

    86   bool mHasPictureRect;

    87 };

    89 }

    90 }

    92 #endif

The Tor Browser / file revision

gfx/layers/composite/ImageHost.h@97036ab72558

gfx/layers/composite/ImageHost.h