зеркало из https://github.com/mozilla/gecko-dev.git
109 строки
3.0 KiB
C++
109 строки
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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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 MOZILLA_GFX_TEXTUREDIB_H
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#define MOZILLA_GFX_TEXTUREDIB_H
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#include "mozilla/layers/Compositor.h"
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#include "mozilla/layers/TextureClient.h"
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#include "mozilla/layers/TextureHost.h"
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#include "mozilla/GfxMessageUtils.h"
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#include "gfxWindowsPlatform.h"
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namespace mozilla {
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namespace layers {
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/**
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* Can only be drawn into through Cairo.
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* Prefer CairoTextureClient when possible.
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* The coresponding TextureHost depends on the compositor
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*/
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class DIBTextureClient : public TextureClient
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{
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public:
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DIBTextureClient(ISurfaceAllocator* aAllocator,
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gfx::SurfaceFormat aFormat,
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TextureFlags aFlags);
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virtual ~DIBTextureClient();
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// TextureClient
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virtual bool IsAllocated() const override { return !!mSurface; }
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virtual bool Lock(OpenMode aOpenMode) override;
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virtual void Unlock() override;
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virtual bool IsLocked() const override{ return mIsLocked; }
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virtual bool ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor) override;
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virtual gfx::IntSize GetSize() const override { return mSize; }
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virtual gfx::SurfaceFormat GetFormat() const override { return mFormat; }
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virtual bool CanExposeDrawTarget() const override { return true; }
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virtual gfx::DrawTarget* BorrowDrawTarget() override;
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virtual bool AllocateForSurface(gfx::IntSize aSize,
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TextureAllocationFlags aFlags = ALLOC_DEFAULT) override;
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virtual bool HasInternalBuffer() const override { return true; }
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virtual TemporaryRef<TextureClient>
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CreateSimilar(TextureFlags aFlags = TextureFlags::DEFAULT,
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TextureAllocationFlags aAllocFlags = ALLOC_DEFAULT) const override;
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protected:
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nsRefPtr<gfxWindowsSurface> mSurface;
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RefPtr<gfx::DrawTarget> mDrawTarget;
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gfx::IntSize mSize;
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gfx::SurfaceFormat mFormat;
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bool mIsLocked;
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};
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class DIBTextureHost : public TextureHost
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{
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public:
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DIBTextureHost(TextureFlags aFlags,
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const SurfaceDescriptorDIB& aDescriptor);
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virtual bool BindTextureSource(CompositableTextureSourceRef& aTexture) override;
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virtual void DeallocateDeviceData() override;
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virtual void SetCompositor(Compositor* aCompositor) override;
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virtual gfx::SurfaceFormat GetFormat() const override { return mFormat; }
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virtual gfx::IntSize GetSize() const override { return mSize; }
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virtual bool Lock() override;
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virtual void Unlock() override;
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virtual void Updated(const nsIntRegion* aRegion = nullptr) override;
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virtual TemporaryRef<gfx::DataSourceSurface> GetAsSurface() override
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{
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return nullptr; // TODO: cf bug 872568
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}
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protected:
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nsRefPtr<gfxWindowsSurface> mSurface;
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RefPtr<DataTextureSource> mTextureSource;
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RefPtr<Compositor> mCompositor;
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gfx::SurfaceFormat mFormat;
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gfx::IntSize mSize;
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bool mIsLocked;
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};
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}
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}
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#endif /* MOZILLA_GFX_TEXTUREDIB_H */
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