The Tor Browser: gfx/layers/client/ClientContainerLayer.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-

     2  * This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef GFX_CLIENTCONTAINERLAYER_H

     7 #define GFX_CLIENTCONTAINERLAYER_H

     9 #include <stdint.h>                     // for uint32_t

    10 #include "ClientLayerManager.h"         // for ClientLayerManager, etc

    11 #include "Layers.h"                     // for Layer, ContainerLayer, etc

    12 #include "gfxPrefs.h"                   // for gfxPrefs

    13 #include "nsDebug.h"                    // for NS_ASSERTION

    14 #include "nsISupportsImpl.h"            // for MOZ_COUNT_CTOR, etc

    15 #include "nsISupportsUtils.h"           // for NS_ADDREF, NS_RELEASE

    16 #include "nsRegion.h"                   // for nsIntRegion

    17 #include "nsTArray.h"                   // for nsAutoTArray

    19 namespace mozilla {

    20 namespace layers {

    22 class ShadowableLayer;

    24 class ClientContainerLayer : public ContainerLayer,

    25                              public ClientLayer

    26 {

    27 public:

    28   ClientContainerLayer(ClientLayerManager* aManager) :

    29     ContainerLayer(aManager,

    30                    static_cast<ClientLayer*>(MOZ_THIS_IN_INITIALIZER_LIST()))

    31   {

    32     MOZ_COUNT_CTOR(ClientContainerLayer);

    33     mSupportsComponentAlphaChildren = true;

    34   }

    35   virtual ~ClientContainerLayer()

    36   {

    37     while (mFirstChild) {

    38       ContainerLayer::RemoveChild(mFirstChild);

    39     }

    41     MOZ_COUNT_DTOR(ClientContainerLayer);

    42   }

    44   virtual void RenderLayer()

    45   {

    46     if (GetMaskLayer()) {

    47       ToClientLayer(GetMaskLayer())->RenderLayer();

    48     }

    50     // Setup mSupportsComponentAlphaChildren in the same way

    51     // that ContainerLayerComposite will do.

    52     if (UseIntermediateSurface()) {

    53       if (GetEffectiveVisibleRegion().GetNumRects() != 1 ||

    54           !(GetContentFlags() & Layer::CONTENT_OPAQUE))

    55       {

    56         gfx::Matrix transform;

    57         if (HasOpaqueAncestorLayer(this) &&

    58             GetEffectiveTransform().Is2D(&transform) &&

    59             !gfx::ThebesMatrix(transform).HasNonIntegerTranslation()) {

    60           SetSupportsComponentAlphaChildren(

    61             gfxPrefs::ComponentAlphaEnabled());

    62         }

    63       }

    64     } else {

    65       SetSupportsComponentAlphaChildren(

    66         (GetContentFlags() & Layer::CONTENT_OPAQUE) ||

    67         (GetParent() && GetParent()->SupportsComponentAlphaChildren()));

    68     }

    70     nsAutoTArray<Layer*, 12> children;

    71     SortChildrenBy3DZOrder(children);

    73     for (uint32_t i = 0; i < children.Length(); i++) {

    74       Layer* child = children.ElementAt(i);

    75       if (child->GetEffectiveVisibleRegion().IsEmpty()) {

    76         continue;

    77       }

    79       ToClientLayer(child)->RenderLayer();

    81       if (!ClientManager()->GetRepeatTransaction() &&

    82           !child->GetInvalidRegion().IsEmpty()) {

    83         child->Mutated();

    84       }

    85     }

    86   }

    88   virtual void SetVisibleRegion(const nsIntRegion& aRegion)

    89   {

    90     NS_ASSERTION(ClientManager()->InConstruction(),

    91                  "Can only set properties in construction phase");

    92     ContainerLayer::SetVisibleRegion(aRegion);

    93   }

    94   virtual bool InsertAfter(Layer* aChild, Layer* aAfter) MOZ_OVERRIDE

    95   {

    96     if(!ClientManager()->InConstruction()) {

    97       NS_ERROR("Can only set properties in construction phase");

    98       return false;

    99     }

   101     if (!ContainerLayer::InsertAfter(aChild, aAfter)) {

   102       return false;

   103     }

   105     ClientManager()->AsShadowForwarder()->InsertAfter(ClientManager()->Hold(this),

   106                                                       ClientManager()->Hold(aChild),

   107                                                       aAfter ? ClientManager()->Hold(aAfter) : nullptr);

   108     return true;

   109   }

   111   virtual bool RemoveChild(Layer* aChild) MOZ_OVERRIDE

   112   {

   113     if (!ClientManager()->InConstruction()) {

   114       NS_ERROR("Can only set properties in construction phase");

   115       return false;

   116     }

   117     // hold on to aChild before we remove it!

   118     ShadowableLayer *heldChild = ClientManager()->Hold(aChild);

   119     if (!ContainerLayer::RemoveChild(aChild)) {

   120       return false;

   121     }

   122     ClientManager()->AsShadowForwarder()->RemoveChild(ClientManager()->Hold(this), heldChild);

   123     return true;

   124   }

   126   virtual bool RepositionChild(Layer* aChild, Layer* aAfter) MOZ_OVERRIDE

   127   {

   128     if (!ClientManager()->InConstruction()) {

   129       NS_ERROR("Can only set properties in construction phase");

   130       return false;

   131     }

   132     if (!ContainerLayer::RepositionChild(aChild, aAfter)) {

   133       return false;

   134     }

   135     ClientManager()->AsShadowForwarder()->RepositionChild(ClientManager()->Hold(this),

   136                                                           ClientManager()->Hold(aChild),

   137                                                           aAfter ? ClientManager()->Hold(aAfter) : nullptr);

   138     return true;

   139   }

   141   virtual Layer* AsLayer() { return this; }

   142   virtual ShadowableLayer* AsShadowableLayer() { return this; }

   144   virtual void ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface)

   145   {

   146     DefaultComputeEffectiveTransforms(aTransformToSurface);

   147   }

   149   void ForceIntermediateSurface() { mUseIntermediateSurface = true; }

   151   void SetSupportsComponentAlphaChildren(bool aSupports) { mSupportsComponentAlphaChildren = aSupports; }

   153 protected:

   154   ClientLayerManager* ClientManager()

   155   {

   156     return static_cast<ClientLayerManager*>(mManager);

   157   }

   158 };

   160 class ClientRefLayer : public RefLayer,

   161                        public ClientLayer {

   162 public:

   163   ClientRefLayer(ClientLayerManager* aManager) :

   164     RefLayer(aManager,

   165              static_cast<ClientLayer*>(MOZ_THIS_IN_INITIALIZER_LIST()))

   166   {

   167     MOZ_COUNT_CTOR(ClientRefLayer);

   168   }

   169   virtual ~ClientRefLayer()

   170   {

   171     MOZ_COUNT_DTOR(ClientRefLayer);

   172   }

   174   virtual Layer* AsLayer() { return this; }

   175   virtual ShadowableLayer* AsShadowableLayer() { return this; }

   177   virtual void Disconnect()

   178   {

   179     ClientLayer::Disconnect();

   180   }

   182   virtual void RenderLayer() { }

   184   virtual void ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface)

   185   {

   186     DefaultComputeEffectiveTransforms(aTransformToSurface);

   187   }

   189 private:

   190   ClientLayerManager* ClientManager()

   191   {

   192     return static_cast<ClientLayerManager*>(mManager);

   193   }

   194 };

   196 }

   197 }

   199 #endif

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