зеркало из https://github.com/mozilla/gecko-dev.git
92 строки
2.6 KiB
C++
92 строки
2.6 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_CLIENTCANVASLAYER_H
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#define GFX_CLIENTCANVASLAYER_H
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#include "ClientCanvasRenderer.h"
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#include "ClientLayerManager.h" // for ClientLayerManager, etc
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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/layers/CanvasClient.h" // for CanvasClient, etc
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#include "mozilla/layers/LayersMessages.h" // for CanvasLayerAttributes, etc
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#include "mozilla/mozalloc.h" // for operator delete
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#include "nsDebug.h" // for NS_ASSERTION
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#include "nsISupportsImpl.h" // for MOZ_COUNT_CTOR, etc
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namespace mozilla {
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namespace layers {
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class CompositableClient;
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class ShadowableLayer;
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class ClientCanvasLayer : public CanvasLayer,
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public ClientLayer
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{
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public:
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explicit ClientCanvasLayer(ClientLayerManager* aLayerManager) :
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CanvasLayer(aLayerManager, static_cast<ClientLayer*>(this))
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{
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MOZ_COUNT_CTOR(ClientCanvasLayer);
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}
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CanvasRenderer* CreateCanvasRendererInternal() override;
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protected:
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virtual ~ClientCanvasLayer();
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public:
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virtual void SetVisibleRegion(const LayerIntRegion& aRegion) override
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{
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NS_ASSERTION(ClientManager()->InConstruction(),
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"Can only set properties in construction phase");
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CanvasLayer::SetVisibleRegion(aRegion);
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}
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virtual void RenderLayer() override;
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virtual void ClearCachedResources() override
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{
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mCanvasRenderer->ClearCachedResources();
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}
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virtual void HandleMemoryPressure() override
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{
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mCanvasRenderer->ClearCachedResources();
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}
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virtual void FillSpecificAttributes(SpecificLayerAttributes& aAttrs) override
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{
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aAttrs = CanvasLayerAttributes(mSamplingFilter, mBounds);
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}
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virtual Layer* AsLayer() override { return this; }
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virtual ShadowableLayer* AsShadowableLayer() override { return this; }
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virtual void Disconnect() override
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{
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mCanvasRenderer->Destroy();
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}
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virtual CompositableClient* GetCompositableClient() override
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{
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ClientCanvasRenderer* canvasRenderer = mCanvasRenderer->AsClientCanvasRenderer();
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MOZ_ASSERT(canvasRenderer);
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return canvasRenderer->GetCanvasClient();
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}
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protected:
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ClientLayerManager* ClientManager()
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{
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return static_cast<ClientLayerManager*>(mManager);
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}
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};
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} // namespace layers
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} // namespace mozilla
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#endif
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