Line data    Source code

       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/. */
       5             : 
       6             : #include "BasicLayersImpl.h"            // for FillRectWithMask, etc
       7             : #include "Layers.h"                     // for Layer, etc
       8             : #include "BasicImplData.h"              // for BasicImplData
       9             : #include "BasicLayers.h"                // for BasicLayerManager
      10             : #include "gfxContext.h"                 // for gfxContext, etc
      11             : #include "gfxRect.h"                    // for gfxRect
      12             : #include "gfx2DGlue.h"
      13             : #include "mozilla/mozalloc.h"           // for operator new
      14             : #include "nsCOMPtr.h"                   // for already_AddRefed
      15             : #include "nsDebug.h"                    // for NS_ASSERTION
      16             : #include "nsISupportsImpl.h"            // for Layer::AddRef, etc
      17             : #include "nsRect.h"                     // for mozilla::gfx::IntRect
      18             : #include "nsRegion.h"                   // for nsIntRegion
      19             : #include "mozilla/gfx/PathHelpers.h"
      20             : #include "mozilla/gfx/Helpers.h"
      21             : #include "nsDisplayList.h"              // for nsDisplayItem
      22             : #include "nsCaret.h"
      23             : 
      24             : using namespace mozilla::gfx;
      25             : 
      26             : namespace mozilla {
      27             : namespace layers {
      28             : 
      29             : class BasicDisplayItemLayer : public DisplayItemLayer, public BasicImplData {
      30             : public:
      31           0 :   explicit BasicDisplayItemLayer(BasicLayerManager* aLayerManager) :
      32           0 :     DisplayItemLayer(aLayerManager, static_cast<BasicImplData*>(this))
      33             :   {
      34           0 :     MOZ_COUNT_CTOR(BasicDisplayItemLayer);
      35           0 :   }
      36             : 
      37             : protected:
      38           0 :   virtual ~BasicDisplayItemLayer()
      39           0 :   {
      40           0 :     MOZ_COUNT_DTOR(BasicDisplayItemLayer);
      41           0 :   }
      42             : 
      43             : public:
      44           0 :   virtual void SetVisibleRegion(const LayerIntRegion& aRegion) override
      45             :   {
      46           0 :     NS_ASSERTION(BasicManager()->InConstruction(),
      47             :                  "Can only set properties in construction phase");
      48           0 :     DisplayItemLayer::SetVisibleRegion(aRegion);
      49           0 :   }
      50             : 
      51           0 :   virtual void Paint(DrawTarget* aDT,
      52             :                      const gfx::Point& aDeviceOffset,
      53             :                      Layer* aMaskLayer) override
      54             :   {
      55           0 :     if (IsHidden() || !mItem || !mBuilder) {
      56           0 :       return;
      57             :     }
      58             : 
      59           0 :     AutoRestoreTransform autoRestoreTransform(aDT);
      60           0 :     Matrix transform = aDT->GetTransform();
      61           0 :     RefPtr<gfxContext> context = gfxContext::CreateOrNull(aDT, aDeviceOffset);
      62           0 :     context->SetMatrix(ThebesMatrix(transform));
      63             : 
      64           0 :     mItem->Paint(mBuilder, context);
      65             :   }
      66             : 
      67             : protected:
      68           0 :   BasicLayerManager* BasicManager()
      69             :   {
      70           0 :     return static_cast<BasicLayerManager*>(mManager);
      71             :   }
      72             : };
      73             : 
      74             : already_AddRefed<DisplayItemLayer>
      75           0 : BasicLayerManager::CreateDisplayItemLayer()
      76             : {
      77           0 :   NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
      78           0 :   RefPtr<DisplayItemLayer> layer = new BasicDisplayItemLayer(this);
      79           0 :   return layer.forget();
      80             : }
      81             : 
      82             : } // namespace layers
      83             : } // namespace mozilla