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0f90257361
Generated by these regexes: find . -name '*.h' -o -name '*.cpp' -o -name '*.mm' | grep -v '\.hg' | grep -v '^\.\/obj' | xargs sed -i 's/gfx[A-Za-z0-9_]*Surface\:\:[a-z]*\(\(ImageFormat\|SurfaceType\|ContentType\|MemoryLocation\)[0-9A-Za-z_]*\)/gfx\1/g' find . -name '*.h' -o -name '*.cpp' -o -name '*.mm' | grep -v '\.hg' | grep -v '^\.\/obj' | xargs sed -i 's/gfx[A-Za-z0-9_]*Surface\:\:[a-z]*\(\(CONTENT_\|MEMORY_\)[0-9A-Za-z_]*\)/GFX_\1/g' find . -name '*.h' -o -name '*.cpp' -o -name '*.mm' | grep -v '\.hg' | grep -v '^\.\/obj' | xargs sed -i 's/\(^\|[^A-Za-z0-9_]\)\(CONTENT_COLOR\|CONTENT_ALPHA\|CONTENT_COLOR_ALPHA\|CONTENT_SENTINEL\|MEMORY_IN_PROCESS_HEAP\|MEMORY_IN_PROCESS_NONHEAP\|MEMORY_OUT_OF_PROCESS\)\($\|[^A-Za-z0-9_]\)/\1GFX_\2\3/g' find . -name '*.h' -o -name '*.cpp' -o -name '*.mm' | grep -v '\.hg' | grep -v '^\.\/obj' | xargs sed -i 's/\(^\|[^A-Za-z0-9_]\)\(ImageFormatARGB32\|ImageFormatRGB24\|ImageFormatA8\|ImageFormatA1\|ImageFormatRGB16_565\|ImageFormatUnknown\|SurfaceTypeImage\|SurfaceTypePDF\|SurfaceTypePS\|SurfaceTypeXlib\|SurfaceTypeXcb\|SurfaceTypeGlitz\|SurfaceTypeQuartz\|SurfaceTypeWin32\|SurfaceTypeBeOS\|SurfaceTypeDirectFB\|SurfaceTypeSVG\|SurfaceTypeOS2\|SurfaceTypeWin32Printing\|SurfaceTypeQuartzImage\|SurfaceTypeScript\|SurfaceTypeQPainter\|SurfaceTypeRecording\|SurfaceTypeVG\|SurfaceTypeGL\|SurfaceTypeDRM\|SurfaceTypeTee\|SurfaceTypeXML\|SurfaceTypeSkia\|SurfaceTypeSubsurface\|SurfaceTypeD2D\|SurfaceTypeMax\)\($\|[^A-Za-z0-9_]\)/\1gfx\2\3/g'
59 lines
2.0 KiB
C++
59 lines
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GFX_CACHED_TEMP_SURFACE_H
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#define GFX_CACHED_TEMP_SURFACE_H
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#include "gfxASurface.h"
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#include "nsExpirationTracker.h"
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#include "nsSize.h"
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class gfxContext;
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/**
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* This class can be used to cache double-buffering back surfaces.
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*
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* Large resource allocations may have an overhead that can be avoided by
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* caching. Caching also alows the system to use history in deciding whether
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* to manage the surfaces in video or system memory.
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*
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* However, because we don't want to set aside megabytes of unused resources
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* unncessarily, these surfaces are released on a timer.
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*/
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class gfxCachedTempSurface {
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public:
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/**
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* Returns a context for a surface that can be efficiently copied to
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* |aSimilarTo|.
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*
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* When |aContentType| has an alpha component, the surface will be cleared.
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* For opaque surfaces, the initial surface contents are undefined.
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* When |aContentType| differs in different invocations this is handled
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* appropriately, creating a new surface if necessary.
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*
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* Because the cached surface may have been created during a previous
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* invocation, this will not be efficient if the new |aSimilarTo| has a
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* different format, size, or gfxSurfaceType.
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*/
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already_AddRefed<gfxContext> Get(gfxContentType aContentType,
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const gfxRect& aRect,
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gfxASurface* aSimilarTo);
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void Expire() { mSurface = nullptr; }
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nsExpirationState* GetExpirationState() { return &mExpirationState; }
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~gfxCachedTempSurface();
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bool IsSurface(gfxASurface* aSurface) { return mSurface == aSurface; }
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private:
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nsRefPtr<gfxASurface> mSurface;
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gfxIntSize mSize;
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nsExpirationState mExpirationState;
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gfxSurfaceType mType;
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};
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#endif /* GFX_CACHED_TEMP_SURFACE_H */
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