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106 lines
3.6 KiB
C++
106 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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_BASICCONTAINERLAYER_H
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#define GFX_BASICCONTAINERLAYER_H
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#include "BasicImplData.h" // for BasicImplData
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#include "BasicLayers.h" // for BasicLayerManager
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#include "Layers.h" // for Layer, ContainerLayer
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#include "nsDebug.h" // for NS_ASSERTION
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#include "nsISupportsImpl.h" // for MOZ_COUNT_CTOR
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#include "nsISupportsUtils.h" // for NS_ADDREF, NS_RELEASE
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struct nsIntRect;
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namespace mozilla {
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namespace layers {
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class BasicContainerLayer : public ContainerLayer, public BasicImplData {
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public:
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explicit BasicContainerLayer(BasicLayerManager* aManager) :
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ContainerLayer(aManager, static_cast<BasicImplData*>(this))
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{
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MOZ_COUNT_CTOR(BasicContainerLayer);
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mSupportsComponentAlphaChildren = true;
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}
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protected:
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virtual ~BasicContainerLayer();
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public:
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virtual void SetVisibleRegion(const nsIntRegion& aRegion) MOZ_OVERRIDE
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{
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NS_ASSERTION(BasicManager()->InConstruction(),
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"Can only set properties in construction phase");
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ContainerLayer::SetVisibleRegion(aRegion);
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}
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virtual bool InsertAfter(Layer* aChild, Layer* aAfter) MOZ_OVERRIDE
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{
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if (!BasicManager()->InConstruction()) {
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NS_ERROR("Can only set properties in construction phase");
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return false;
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}
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return ContainerLayer::InsertAfter(aChild, aAfter);
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}
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virtual bool RemoveChild(Layer* aChild) MOZ_OVERRIDE
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{
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if (!BasicManager()->InConstruction()) {
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NS_ERROR("Can only set properties in construction phase");
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return false;
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}
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return ContainerLayer::RemoveChild(aChild);
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}
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virtual bool RepositionChild(Layer* aChild, Layer* aAfter) MOZ_OVERRIDE
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{
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if (!BasicManager()->InConstruction()) {
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NS_ERROR("Can only set properties in construction phase");
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return false;
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}
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return ContainerLayer::RepositionChild(aChild, aAfter);
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}
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virtual void ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface) MOZ_OVERRIDE;
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/**
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* Returns true when:
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* a) no (non-hidden) childrens' visible areas overlap in
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* (aInRect intersected with this layer's visible region).
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* b) the (non-hidden) childrens' visible areas cover
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* (aInRect intersected with this layer's visible region).
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* c) this layer and all (non-hidden) children have transforms that are translations
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* by integers.
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* aInRect is in the root coordinate system.
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* Child layers with opacity do not contribute to the covered area in check b).
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* This method can be conservative; it's OK to return false under any
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* circumstances.
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*/
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bool ChildrenPartitionVisibleRegion(const nsIntRect& aInRect);
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void ForceIntermediateSurface() { mUseIntermediateSurface = true; }
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void SetSupportsComponentAlphaChildren(bool aSupports) { mSupportsComponentAlphaChildren = aSupports; }
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virtual void Validate(LayerManager::DrawPaintedLayerCallback aCallback,
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void* aCallbackData,
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ReadbackProcessor* aReadback) MOZ_OVERRIDE;
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/**
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* We don't really have a hard restriction for max layer size, but we pick
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* 4096 to avoid excessive memory usage.
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*/
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virtual int32_t GetMaxLayerSize() MOZ_OVERRIDE { return 4096; }
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protected:
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BasicLayerManager* BasicManager()
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{
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return static_cast<BasicLayerManager*>(mManager);
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}
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};
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}
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}
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#endif
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