gfx/layers/CopyableCanvasLayer.h@97036ab72558 (annotated)
gfx/layers/CopyableCanvasLayer.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
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.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
| michael@0 | 2 | * This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #ifndef GFX_COPYABLECANVASLAYER_H |
| michael@0 | 7 | #define GFX_COPYABLECANVASLAYER_H |
| michael@0 | 8 | |
| michael@0 | 9 | #include <stdint.h> // for uint32_t |
| michael@0 | 10 | #include "GLContextTypes.h" // for GLContext |
| michael@0 | 11 | #include "Layers.h" // for CanvasLayer, etc |
| michael@0 | 12 | #include "gfxContext.h" // for gfxContext, etc |
| michael@0 | 13 | #include "gfxTypes.h" |
| michael@0 | 14 | #include "gfxPlatform.h" // for gfxImageFormat |
| michael@0 | 15 | #include "mozilla/Assertions.h" // for MOZ_ASSERT, etc |
| michael@0 | 16 | #include "mozilla/Preferences.h" // for Preferences |
| michael@0 | 17 | #include "mozilla/RefPtr.h" // for RefPtr |
| michael@0 | 18 | #include "mozilla/gfx/2D.h" // for DrawTarget |
| michael@0 | 19 | #include "mozilla/mozalloc.h" // for operator delete, etc |
| michael@0 | 20 | #include "nsAutoPtr.h" // for nsRefPtr |
| michael@0 | 21 | #include "nsISupportsImpl.h" // for MOZ_COUNT_CTOR, etc |
| michael@0 | 22 | |
| michael@0 | 23 | namespace mozilla { |
| michael@0 | 24 | |
| michael@0 | 25 | namespace gfx { |
| michael@0 | 26 | class SurfaceStream; |
| michael@0 | 27 | class SharedSurface; |
| michael@0 | 28 | class SurfaceFactory; |
| michael@0 | 29 | } |
| michael@0 | 30 | |
| michael@0 | 31 | namespace layers { |
| michael@0 | 32 | |
| michael@0 | 33 | class CanvasClientWebGL; |
| michael@0 | 34 | |
| michael@0 | 35 | /** |
| michael@0 | 36 | * A shared CanvasLayer implementation that supports copying |
| michael@0 | 37 | * its contents into a gfxASurface using UpdateSurface. |
| michael@0 | 38 | */ |
| michael@0 | 39 | class CopyableCanvasLayer : public CanvasLayer |
| michael@0 | 40 | { |
| michael@0 | 41 | public: |
| michael@0 | 42 | CopyableCanvasLayer(LayerManager* aLayerManager, void *aImplData); |
| michael@0 | 43 | virtual ~CopyableCanvasLayer(); |
| michael@0 | 44 | |
| michael@0 | 45 | virtual void Initialize(const Data& aData); |
| michael@0 | 46 | |
| michael@0 | 47 | virtual bool IsDataValid(const Data& aData); |
| michael@0 | 48 | |
| michael@0 | 49 | protected: |
| michael@0 | 50 | void UpdateTarget(gfx::DrawTarget* aDestTarget = nullptr); |
| michael@0 | 51 | |
| michael@0 | 52 | RefPtr<gfx::SourceSurface> mSurface; |
| michael@0 | 53 | nsRefPtr<mozilla::gl::GLContext> mGLContext; |
| michael@0 | 54 | mozilla::RefPtr<mozilla::gfx::DrawTarget> mDrawTarget; |
| michael@0 | 55 | |
| michael@0 | 56 | RefPtr<gfx::SurfaceStream> mStream; |
| michael@0 | 57 | |
| michael@0 | 58 | uint32_t mCanvasFramebuffer; |
| michael@0 | 59 | |
| michael@0 | 60 | bool mIsGLAlphaPremult; |
| michael@0 | 61 | bool mNeedsYFlip; |
| michael@0 | 62 | |
| michael@0 | 63 | RefPtr<gfx::DataSourceSurface> mCachedTempSurface; |
| michael@0 | 64 | gfx::IntSize mCachedSize; |
| michael@0 | 65 | gfx::SurfaceFormat mCachedFormat; |
| michael@0 | 66 | |
| michael@0 | 67 | gfx::DataSourceSurface* GetTempSurface(const gfx::IntSize& aSize, |
| michael@0 | 68 | const gfx::SurfaceFormat aFormat); |
| michael@0 | 69 | |
| michael@0 | 70 | void DiscardTempSurface(); |
| michael@0 | 71 | }; |
| michael@0 | 72 | |
| michael@0 | 73 | } |
| michael@0 | 74 | } |
| michael@0 | 75 | |
| michael@0 | 76 | #endif |
