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