gecko/gfx/layers/composite/ThebesLayerComposite.h

91 lines
2.7 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 GFX_ThebesLayerComposite_H
#define GFX_ThebesLayerComposite_H
#include "Layers.h" // for Layer (ptr only), etc
#include "gfxRect.h" // for gfxRect
#include "mozilla/Attributes.h" // for MOZ_OVERRIDE
#include "mozilla/RefPtr.h" // for RefPtr
#include "mozilla/layers/LayerManagerComposite.h" // for LayerComposite, etc
#include "mozilla/layers/LayersTypes.h" // for LayerRenderState, etc
#include "nsDebug.h" // for NS_RUNTIMEABORT
#include "nsRegion.h" // for nsIntRegion
#include "nscore.h" // for nsACString
struct nsIntPoint;
struct nsIntRect;
namespace mozilla {
namespace layers {
/**
* Thebes layers use ContentHosts for their compsositable host.
* By using different ContentHosts, ThebesLayerComposite support tiled and
* non-tiled Thebes layers and single or double buffering.
*/
class CompositableHost;
class ContentHost;
class TiledLayerComposer;
class ThebesLayerComposite : public ThebesLayer,
public LayerComposite
{
public:
ThebesLayerComposite(LayerManagerComposite *aManager);
virtual ~ThebesLayerComposite();
virtual void Disconnect() MOZ_OVERRIDE;
virtual LayerRenderState GetRenderState() MOZ_OVERRIDE;
CompositableHost* GetCompositableHost() MOZ_OVERRIDE;
virtual void Destroy() MOZ_OVERRIDE;
virtual Layer* GetLayer() MOZ_OVERRIDE;
virtual TiledLayerComposer* GetTiledLayerComposer() MOZ_OVERRIDE;
virtual void RenderLayer(const nsIntRect& aClipRect) MOZ_OVERRIDE;
virtual void CleanupResources() MOZ_OVERRIDE;
virtual bool SetCompositableHost(CompositableHost* aHost) MOZ_OVERRIDE;
virtual LayerComposite* AsLayerComposite() MOZ_OVERRIDE { return this; }
void EnsureTiled() { mRequiresTiledProperties = true; }
virtual void InvalidateRegion(const nsIntRegion& aRegion)
{
NS_RUNTIMEABORT("ThebesLayerComposites can't fill invalidated regions");
}
void SetValidRegion(const nsIntRegion& aRegion)
{
MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) ValidRegion", this));
mValidRegion = aRegion;
Mutated();
}
protected:
virtual nsACString& PrintInfo(nsACString& aTo, const char* aPrefix) MOZ_OVERRIDE;
private:
CSSToScreenScale GetEffectiveResolution();
RefPtr<ContentHost> mBuffer;
bool mRequiresTiledProperties;
};
} /* layers */
} /* mozilla */
#endif /* GFX_ThebesLayerComposite_H */