michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0: * This Source Code Form is subject to the terms of the Mozilla Public
michael@0: * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0: * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef MOZILLA_GFX_BASICCOMPOSITOR_H
michael@0: #define MOZILLA_GFX_BASICCOMPOSITOR_H
michael@0: 
michael@0: #include "mozilla/layers/Compositor.h"
michael@0: #include "mozilla/layers/TextureHost.h"
michael@0: #include "mozilla/gfx/2D.h"
michael@0: #include "nsAutoPtr.h"
michael@0: 
michael@0: class gfxContext;
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace layers {
michael@0: 
michael@0: class BasicCompositingRenderTarget : public CompositingRenderTarget
michael@0: {
michael@0: public:
michael@0:   BasicCompositingRenderTarget(gfx::DrawTarget* aDrawTarget, const gfx::IntRect& aRect)
michael@0:     : CompositingRenderTarget(aRect.TopLeft())
michael@0:     , mDrawTarget(aDrawTarget)
michael@0:     , mSize(aRect.Size())
michael@0:   { }
michael@0: 
michael@0:   virtual gfx::IntSize GetSize() const MOZ_OVERRIDE { return mSize; }
michael@0: 
michael@0:   virtual gfx::SurfaceFormat GetFormat() const MOZ_OVERRIDE
michael@0:   {
michael@0:     return mDrawTarget ? mDrawTarget->GetFormat()
michael@0:                        : gfx::SurfaceFormat(gfx::SurfaceFormat::UNKNOWN);
michael@0:   }
michael@0: 
michael@0:   RefPtr<gfx::DrawTarget> mDrawTarget;
michael@0:   gfx::IntSize mSize;
michael@0: };
michael@0: 
michael@0: class BasicCompositor : public Compositor
michael@0: {
michael@0: public:
michael@0:   BasicCompositor(nsIWidget *aWidget);
michael@0: 
michael@0:   virtual ~BasicCompositor();
michael@0: 
michael@0: 
michael@0:   virtual bool Initialize() MOZ_OVERRIDE { return true; };
michael@0: 
michael@0:   virtual void Destroy() MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual TextureFactoryIdentifier GetTextureFactoryIdentifier() MOZ_OVERRIDE
michael@0:   {
michael@0:     return TextureFactoryIdentifier(LayersBackend::LAYERS_BASIC,
michael@0:                                     XRE_GetProcessType(),
michael@0:                                     GetMaxTextureSize());
michael@0:   }
michael@0: 
michael@0:   virtual TemporaryRef<CompositingRenderTarget>
michael@0:   CreateRenderTarget(const gfx::IntRect &aRect, SurfaceInitMode aInit) MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual TemporaryRef<CompositingRenderTarget>
michael@0:   CreateRenderTargetFromSource(const gfx::IntRect &aRect,
michael@0:                                const CompositingRenderTarget *aSource,
michael@0:                                const gfx::IntPoint &aSourcePoint) MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual TemporaryRef<DataTextureSource>
michael@0:   CreateDataTextureSource(TextureFlags aFlags = 0) MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual bool SupportsEffect(EffectTypes aEffect) MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual void SetRenderTarget(CompositingRenderTarget *aSource) MOZ_OVERRIDE
michael@0:   {
michael@0:     mRenderTarget = static_cast<BasicCompositingRenderTarget*>(aSource);
michael@0:   }
michael@0:   virtual CompositingRenderTarget* GetCurrentRenderTarget() const MOZ_OVERRIDE
michael@0:   {
michael@0:     return mRenderTarget;
michael@0:   }
michael@0: 
michael@0:   virtual void DrawQuad(const gfx::Rect& aRect,
michael@0:                         const gfx::Rect& aClipRect,
michael@0:                         const EffectChain &aEffectChain,
michael@0:                         gfx::Float aOpacity,
michael@0:                         const gfx::Matrix4x4 &aTransform) MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual void BeginFrame(const nsIntRegion& aInvalidRegion,
michael@0:                           const gfx::Rect *aClipRectIn,
michael@0:                           const gfx::Matrix& aTransform,
michael@0:                           const gfx::Rect& aRenderBounds,
michael@0:                           gfx::Rect *aClipRectOut = nullptr,
michael@0:                           gfx::Rect *aRenderBoundsOut = nullptr) MOZ_OVERRIDE;
michael@0:   virtual void EndFrame() MOZ_OVERRIDE;
michael@0:   virtual void EndFrameForExternalComposition(const gfx::Matrix& aTransform) MOZ_OVERRIDE
michael@0:   {
michael@0:     NS_RUNTIMEABORT("We shouldn't ever hit this");
michael@0:   }
michael@0:   virtual void AbortFrame() MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual bool SupportsPartialTextureUpdate() { return true; }
michael@0:   virtual bool CanUseCanvasLayerForSize(const gfx::IntSize &aSize) MOZ_OVERRIDE { return true; }
michael@0:   virtual int32_t GetMaxTextureSize() const MOZ_OVERRIDE { return INT32_MAX; }
michael@0:   virtual void SetDestinationSurfaceSize(const gfx::IntSize& aSize) MOZ_OVERRIDE { }
michael@0:   virtual void SetTargetContext(gfx::DrawTarget* aTarget) MOZ_OVERRIDE
michael@0:   {
michael@0:     mCopyTarget = aTarget;
michael@0:   }
michael@0:   
michael@0:   virtual void SetScreenRenderOffset(const ScreenPoint& aOffset) MOZ_OVERRIDE {
michael@0:   }
michael@0: 
michael@0:   virtual void MakeCurrent(MakeCurrentFlags aFlags = 0) { }
michael@0: 
michael@0:   virtual void PrepareViewport(const gfx::IntSize& aSize,
michael@0:                                const gfx::Matrix& aWorldTransform) MOZ_OVERRIDE { }
michael@0: 
michael@0:   virtual const char* Name() const { return "Basic"; }
michael@0: 
michael@0:   virtual LayersBackend GetBackendType() const MOZ_OVERRIDE {
michael@0:     return LayersBackend::LAYERS_BASIC;
michael@0:   }
michael@0: 
michael@0:   virtual nsIWidget* GetWidget() const MOZ_OVERRIDE { return mWidget; }
michael@0: 
michael@0:   gfx::DrawTarget *GetDrawTarget() { return mDrawTarget; }
michael@0: 
michael@0: private:
michael@0: 
michael@0:   virtual gfx::IntSize GetWidgetSize() const MOZ_OVERRIDE { return mWidgetSize; }
michael@0: 
michael@0:   // Widget associated with this compositor
michael@0:   nsIWidget *mWidget;
michael@0:   gfx::IntSize mWidgetSize;
michael@0: 
michael@0:   // The final destination surface
michael@0:   RefPtr<gfx::DrawTarget> mDrawTarget;
michael@0:   // The current render target for drawing
michael@0:   RefPtr<BasicCompositingRenderTarget> mRenderTarget;
michael@0:   // An optional destination target to copy the results
michael@0:   // to after drawing is completed.
michael@0:   RefPtr<gfx::DrawTarget> mCopyTarget;
michael@0: 
michael@0:   gfx::IntRect mInvalidRect;
michael@0:   nsIntRegion mInvalidRegion;
michael@0: };
michael@0: 
michael@0: } // namespace layers
michael@0: } // namespace mozilla
michael@0: 
michael@0: #endif /* MOZILLA_GFX_BASICCOMPOSITOR_H */