зеркало из https://github.com/mozilla/gecko-dev.git
73 строки
2.3 KiB
C++
73 строки
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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_CanvasLayerComposite_H
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#define GFX_CanvasLayerComposite_H
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#include "Layers.h" // for CanvasLayer, etc
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#include "mozilla/Attributes.h" // for override
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#include "mozilla/RefPtr.h" // for RefPtr
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#include "mozilla/layers/LayerManagerComposite.h" // for LayerComposite, etc
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#include "mozilla/layers/LayersTypes.h" // for LayerRenderState, etc
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#include "nsRect.h" // for mozilla::gfx::IntRect
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#include "nscore.h" // for nsACString
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namespace mozilla {
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namespace layers {
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class CompositableHost;
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// Canvas layers use ImageHosts (but CanvasClients) because compositing a
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// canvas is identical to compositing an image.
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class ImageHost;
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class CanvasLayerComposite : public CanvasLayer, public LayerComposite {
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public:
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explicit CanvasLayerComposite(LayerManagerComposite* aManager);
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protected:
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virtual ~CanvasLayerComposite();
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public:
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bool SetCompositableHost(CompositableHost* aHost) override;
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void Disconnect() override { Destroy(); }
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void SetLayerManager(HostLayerManager* aManager) override;
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Layer* GetLayer() override;
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void RenderLayer(const gfx::IntRect& aClipRect,
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const Maybe<gfx::Polygon>& aGeometry) override;
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void CleanupResources() override;
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void GenEffectChain(EffectChain& aEffect) override;
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CompositableHost* GetCompositableHost() override;
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HostLayer* AsHostLayer() override { return this; }
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const char* Name() const override { return "CanvasLayerComposite"; }
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protected:
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CanvasRenderer* CreateCanvasRendererInternal() override {
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MOZ_CRASH("Incompatible surface type");
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return nullptr;
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}
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void PrintInfo(std::stringstream& aStream, const char* aPrefix) override;
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private:
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gfx::SamplingFilter GetSamplingFilter();
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private:
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RefPtr<CompositableHost> mCompositableHost;
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};
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} // namespace layers
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} // namespace mozilla
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#endif /* GFX_CanvasLayerComposite_H */
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