TextureDIB.h
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef MOZILLA_GFX_TEXTUREDIB_H
#define MOZILLA_GFX_TEXTUREDIB_H
#include "mozilla/layers/Compositor.h"
#include "mozilla/layers/TextureClient.h"
#include "mozilla/layers/TextureHost.h"
#include "mozilla/GfxMessageUtils.h"
#include "gfxWindowsPlatform.h"
namespace mozilla {
namespace layers {
/**
* Can only be drawn into through Cairo.
* Prefer CairoTextureClient when possible.
* The coresponding TextureHost depends on the compositor
*/
class DIBTextureClient : public TextureClient
{
public:
DIBTextureClient(ISurfaceAllocator* aAllocator,
gfx::SurfaceFormat aFormat,
TextureFlags aFlags);
virtual ~DIBTextureClient();
// TextureClient
virtual bool IsAllocated() const override { return !!mSurface; }
virtual bool Lock(OpenMode aOpenMode) override;
virtual void Unlock() override;
virtual bool IsLocked() const override{ return mIsLocked; }
virtual bool ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor) override;
virtual gfx::IntSize GetSize() const override { return mSize; }
virtual gfx::SurfaceFormat GetFormat() const override { return mFormat; }
virtual bool CanExposeDrawTarget() const override { return true; }
virtual gfx::DrawTarget* BorrowDrawTarget() override;
virtual bool AllocateForSurface(gfx::IntSize aSize,
TextureAllocationFlags aFlags = ALLOC_DEFAULT) override;
virtual bool HasInternalBuffer() const override { return true; }
virtual TemporaryRef<TextureClient>
CreateSimilar(TextureFlags aFlags = TextureFlags::DEFAULT,
TextureAllocationFlags aAllocFlags = ALLOC_DEFAULT) const override;
protected:
nsRefPtr<gfxWindowsSurface> mSurface;
RefPtr<gfx::DrawTarget> mDrawTarget;
gfx::IntSize mSize;
gfx::SurfaceFormat mFormat;
bool mIsLocked;
};
class DIBTextureHost : public TextureHost
{
public:
DIBTextureHost(TextureFlags aFlags,
const SurfaceDescriptorDIB& aDescriptor);
virtual TextureSource* GetTextureSources() override;
virtual void DeallocateDeviceData() override;
virtual void SetCompositor(Compositor* aCompositor) override;
virtual gfx::SurfaceFormat GetFormat() const override { return mFormat; }
virtual gfx::IntSize GetSize() const override { return mSize; }
virtual bool Lock() override;
virtual void Unlock() override;
virtual void Updated(const nsIntRegion* aRegion = nullptr) override;
virtual TemporaryRef<gfx::DataSourceSurface> GetAsSurface() override
{
return nullptr; // TODO: cf bug 872568
}
protected:
nsRefPtr<gfxWindowsSurface> mSurface;
RefPtr<DataTextureSource> mTextureSource;
RefPtr<Compositor> mCompositor;
gfx::SurfaceFormat mFormat;
gfx::IntSize mSize;
bool mIsLocked;
};
}
}
#endif /* MOZILLA_GFX_TEXTUREDIB_H */