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_CLIENTCONTAINERLAYER_H
michael@0: #define GFX_CLIENTCONTAINERLAYER_H
michael@0: 
michael@0: #include <stdint.h>                     // for uint32_t
michael@0: #include "ClientLayerManager.h"         // for ClientLayerManager, etc
michael@0: #include "Layers.h"                     // for Layer, ContainerLayer, etc
michael@0: #include "gfxPrefs.h"                   // for gfxPrefs
michael@0: #include "nsDebug.h"                    // for NS_ASSERTION
michael@0: #include "nsISupportsImpl.h"            // for MOZ_COUNT_CTOR, etc
michael@0: #include "nsISupportsUtils.h"           // for NS_ADDREF, NS_RELEASE
michael@0: #include "nsRegion.h"                   // for nsIntRegion
michael@0: #include "nsTArray.h"                   // for nsAutoTArray
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace layers {
michael@0: 
michael@0: class ShadowableLayer;
michael@0: 
michael@0: class ClientContainerLayer : public ContainerLayer,
michael@0:                              public ClientLayer
michael@0: {
michael@0: public:
michael@0:   ClientContainerLayer(ClientLayerManager* aManager) :
michael@0:     ContainerLayer(aManager,
michael@0:                    static_cast<ClientLayer*>(MOZ_THIS_IN_INITIALIZER_LIST()))
michael@0:   {
michael@0:     MOZ_COUNT_CTOR(ClientContainerLayer);
michael@0:     mSupportsComponentAlphaChildren = true;
michael@0:   }
michael@0:   virtual ~ClientContainerLayer()
michael@0:   {
michael@0:     while (mFirstChild) {
michael@0:       ContainerLayer::RemoveChild(mFirstChild);
michael@0:     }
michael@0: 
michael@0:     MOZ_COUNT_DTOR(ClientContainerLayer);
michael@0:   }
michael@0: 
michael@0:   virtual void RenderLayer()
michael@0:   {
michael@0:     if (GetMaskLayer()) {
michael@0:       ToClientLayer(GetMaskLayer())->RenderLayer();
michael@0:     }
michael@0:     
michael@0:     // Setup mSupportsComponentAlphaChildren in the same way 
michael@0:     // that ContainerLayerComposite will do.
michael@0:     if (UseIntermediateSurface()) {
michael@0:       if (GetEffectiveVisibleRegion().GetNumRects() != 1 ||
michael@0:           !(GetContentFlags() & Layer::CONTENT_OPAQUE))
michael@0:       {
michael@0:         gfx::Matrix transform;
michael@0:         if (HasOpaqueAncestorLayer(this) &&
michael@0:             GetEffectiveTransform().Is2D(&transform) &&
michael@0:             !gfx::ThebesMatrix(transform).HasNonIntegerTranslation()) {
michael@0:           SetSupportsComponentAlphaChildren(
michael@0:             gfxPrefs::ComponentAlphaEnabled());
michael@0:         }
michael@0:       }
michael@0:     } else {
michael@0:       SetSupportsComponentAlphaChildren(
michael@0:         (GetContentFlags() & Layer::CONTENT_OPAQUE) ||
michael@0:         (GetParent() && GetParent()->SupportsComponentAlphaChildren()));
michael@0:     }
michael@0: 
michael@0:     nsAutoTArray<Layer*, 12> children;
michael@0:     SortChildrenBy3DZOrder(children);
michael@0: 
michael@0:     for (uint32_t i = 0; i < children.Length(); i++) {
michael@0:       Layer* child = children.ElementAt(i);
michael@0:       if (child->GetEffectiveVisibleRegion().IsEmpty()) {
michael@0:         continue;
michael@0:       }
michael@0: 
michael@0:       ToClientLayer(child)->RenderLayer();
michael@0: 
michael@0:       if (!ClientManager()->GetRepeatTransaction() &&
michael@0:           !child->GetInvalidRegion().IsEmpty()) {
michael@0:         child->Mutated();
michael@0:       }
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   virtual void SetVisibleRegion(const nsIntRegion& aRegion)
michael@0:   {
michael@0:     NS_ASSERTION(ClientManager()->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) MOZ_OVERRIDE
michael@0:   {
michael@0:     if(!ClientManager()->InConstruction()) {
michael@0:       NS_ERROR("Can only set properties in construction phase");
michael@0:       return false;
michael@0:     }
michael@0: 
michael@0:     if (!ContainerLayer::InsertAfter(aChild, aAfter)) {
michael@0:       return false;
michael@0:     }
michael@0: 
michael@0:     ClientManager()->AsShadowForwarder()->InsertAfter(ClientManager()->Hold(this),
michael@0:                                                       ClientManager()->Hold(aChild),
michael@0:                                                       aAfter ? ClientManager()->Hold(aAfter) : nullptr);
michael@0:     return true;
michael@0:   }
michael@0: 
michael@0:   virtual bool RemoveChild(Layer* aChild) MOZ_OVERRIDE
michael@0:   {
michael@0:     if (!ClientManager()->InConstruction()) {
michael@0:       NS_ERROR("Can only set properties in construction phase");
michael@0:       return false;
michael@0:     }
michael@0:     // hold on to aChild before we remove it!
michael@0:     ShadowableLayer *heldChild = ClientManager()->Hold(aChild);
michael@0:     if (!ContainerLayer::RemoveChild(aChild)) {
michael@0:       return false;
michael@0:     }
michael@0:     ClientManager()->AsShadowForwarder()->RemoveChild(ClientManager()->Hold(this), heldChild);
michael@0:     return true;
michael@0:   }
michael@0: 
michael@0:   virtual bool RepositionChild(Layer* aChild, Layer* aAfter) MOZ_OVERRIDE
michael@0:   {
michael@0:     if (!ClientManager()->InConstruction()) {
michael@0:       NS_ERROR("Can only set properties in construction phase");
michael@0:       return false;
michael@0:     }
michael@0:     if (!ContainerLayer::RepositionChild(aChild, aAfter)) {
michael@0:       return false;
michael@0:     }
michael@0:     ClientManager()->AsShadowForwarder()->RepositionChild(ClientManager()->Hold(this),
michael@0:                                                           ClientManager()->Hold(aChild),
michael@0:                                                           aAfter ? ClientManager()->Hold(aAfter) : nullptr);
michael@0:     return true;
michael@0:   }
michael@0: 
michael@0:   virtual Layer* AsLayer() { return this; }
michael@0:   virtual ShadowableLayer* AsShadowableLayer() { return this; }
michael@0: 
michael@0:   virtual void ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface)
michael@0:   {
michael@0:     DefaultComputeEffectiveTransforms(aTransformToSurface);
michael@0:   }
michael@0: 
michael@0:   void ForceIntermediateSurface() { mUseIntermediateSurface = true; }
michael@0: 
michael@0:   void SetSupportsComponentAlphaChildren(bool aSupports) { mSupportsComponentAlphaChildren = aSupports; }
michael@0: 
michael@0: protected:
michael@0:   ClientLayerManager* ClientManager()
michael@0:   {
michael@0:     return static_cast<ClientLayerManager*>(mManager);
michael@0:   }
michael@0: };
michael@0: 
michael@0: class ClientRefLayer : public RefLayer,
michael@0:                        public ClientLayer {
michael@0: public:
michael@0:   ClientRefLayer(ClientLayerManager* aManager) :
michael@0:     RefLayer(aManager,
michael@0:              static_cast<ClientLayer*>(MOZ_THIS_IN_INITIALIZER_LIST()))
michael@0:   {
michael@0:     MOZ_COUNT_CTOR(ClientRefLayer);
michael@0:   }
michael@0:   virtual ~ClientRefLayer()
michael@0:   {
michael@0:     MOZ_COUNT_DTOR(ClientRefLayer);
michael@0:   }
michael@0: 
michael@0:   virtual Layer* AsLayer() { return this; }
michael@0:   virtual ShadowableLayer* AsShadowableLayer() { return this; }
michael@0: 
michael@0:   virtual void Disconnect()
michael@0:   {
michael@0:     ClientLayer::Disconnect();
michael@0:   }
michael@0: 
michael@0:   virtual void RenderLayer() { }
michael@0: 
michael@0:   virtual void ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface)
michael@0:   {
michael@0:     DefaultComputeEffectiveTransforms(aTransformToSurface);
michael@0:   }
michael@0: 
michael@0: private:
michael@0:   ClientLayerManager* ClientManager()
michael@0:   {
michael@0:     return static_cast<ClientLayerManager*>(mManager);
michael@0:   }
michael@0: };
michael@0: 
michael@0: }
michael@0: }
michael@0: 
michael@0: #endif