michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef GFX_BASICCONTAINERLAYER_H
michael@0: #define GFX_BASICCONTAINERLAYER_H
michael@0: 
michael@0: #include "BasicImplData.h"              // for BasicImplData
michael@0: #include "BasicLayers.h"                // for BasicLayerManager
michael@0: #include "Layers.h"                     // for Layer, ContainerLayer
michael@0: #include "nsDebug.h"                    // for NS_ASSERTION
michael@0: #include "nsISupportsImpl.h"            // for MOZ_COUNT_CTOR
michael@0: #include "nsISupportsUtils.h"           // for NS_ADDREF, NS_RELEASE
michael@0: struct nsIntRect;
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace layers {
michael@0: 
michael@0: class BasicContainerLayer : public ContainerLayer, public BasicImplData {
michael@0: public:
michael@0:   BasicContainerLayer(BasicLayerManager* aManager) :
michael@0:     ContainerLayer(aManager,
michael@0:                    static_cast<BasicImplData*>(MOZ_THIS_IN_INITIALIZER_LIST()))
michael@0:   {
michael@0:     MOZ_COUNT_CTOR(BasicContainerLayer);
michael@0:     mSupportsComponentAlphaChildren = true;
michael@0:   }
michael@0:   virtual ~BasicContainerLayer();
michael@0: 
michael@0:   virtual void SetVisibleRegion(const nsIntRegion& aRegion)
michael@0:   {
michael@0:     NS_ASSERTION(BasicManager()->InConstruction(),
michael@0:                  "Can only set properties in construction phase");
michael@0:     ContainerLayer::SetVisibleRegion(aRegion);
michael@0:   }
michael@0:   virtual bool InsertAfter(Layer* aChild, Layer* aAfter)
michael@0:   {
michael@0:     if (!BasicManager()->InConstruction()) {
michael@0:       NS_ERROR("Can only set properties in construction phase");
michael@0:       return false;
michael@0:     }
michael@0:     return ContainerLayer::InsertAfter(aChild, aAfter);
michael@0:   }
michael@0: 
michael@0:   virtual bool RemoveChild(Layer* aChild)
michael@0:   { 
michael@0:     if (!BasicManager()->InConstruction()) {
michael@0:       NS_ERROR("Can only set properties in construction phase");
michael@0:       return false;
michael@0:     }
michael@0:     return ContainerLayer::RemoveChild(aChild);
michael@0:   }
michael@0: 
michael@0:   virtual bool RepositionChild(Layer* aChild, Layer* aAfter)
michael@0:   {
michael@0:     if (!BasicManager()->InConstruction()) {
michael@0:       NS_ERROR("Can only set properties in construction phase");
michael@0:       return false;
michael@0:     }
michael@0:     return ContainerLayer::RepositionChild(aChild, aAfter);
michael@0:   }
michael@0: 
michael@0:   virtual void ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface);
michael@0: 
michael@0:   /**
michael@0:    * Returns true when:
michael@0:    * a) no (non-hidden) childrens' visible areas overlap in
michael@0:    * (aInRect intersected with this layer's visible region).
michael@0:    * b) the (non-hidden) childrens' visible areas cover
michael@0:    * (aInRect intersected with this layer's visible region).
michael@0:    * c) this layer and all (non-hidden) children have transforms that are translations
michael@0:    * by integers.
michael@0:    * aInRect is in the root coordinate system.
michael@0:    * Child layers with opacity do not contribute to the covered area in check b).
michael@0:    * This method can be conservative; it's OK to return false under any
michael@0:    * circumstances.
michael@0:    */
michael@0:   bool ChildrenPartitionVisibleRegion(const nsIntRect& aInRect);
michael@0: 
michael@0:   void ForceIntermediateSurface() { mUseIntermediateSurface = true; }
michael@0: 
michael@0:   void SetSupportsComponentAlphaChildren(bool aSupports) { mSupportsComponentAlphaChildren = aSupports; }
michael@0: 
michael@0:   virtual void Validate(LayerManager::DrawThebesLayerCallback aCallback,
michael@0:                         void* aCallbackData) MOZ_OVERRIDE;
michael@0: 
michael@0: protected:
michael@0:   BasicLayerManager* BasicManager()
michael@0:   {
michael@0:     return static_cast<BasicLayerManager*>(mManager);
michael@0:   }
michael@0: };
michael@0: }
michael@0: }
michael@0: 
michael@0: #endif