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: #include "BasicLayersImpl.h"            // for FillRectWithMask, etc
michael@0: #include "Layers.h"                     // for ColorLayer, etc
michael@0: #include "BasicImplData.h"              // for BasicImplData
michael@0: #include "BasicLayers.h"                // for BasicLayerManager
michael@0: #include "gfxContext.h"                 // for gfxContext, etc
michael@0: #include "gfxRect.h"                    // for gfxRect
michael@0: #include "gfx2DGlue.h"
michael@0: #include "mozilla/mozalloc.h"           // for operator new
michael@0: #include "nsAutoPtr.h"                  // for nsRefPtr
michael@0: #include "nsCOMPtr.h"                   // for already_AddRefed
michael@0: #include "nsDebug.h"                    // for NS_ASSERTION
michael@0: #include "nsISupportsImpl.h"            // for Layer::AddRef, etc
michael@0: #include "nsRect.h"                     // for nsIntRect
michael@0: #include "nsRegion.h"                   // for nsIntRegion
michael@0: #include "mozilla/gfx/PathHelpers.h"
michael@0: 
michael@0: using namespace mozilla::gfx;
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace layers {
michael@0: 
michael@0: class BasicColorLayer : public ColorLayer, public BasicImplData {
michael@0: public:
michael@0:   BasicColorLayer(BasicLayerManager* aLayerManager) :
michael@0:     ColorLayer(aLayerManager,
michael@0:                static_cast<BasicImplData*>(MOZ_THIS_IN_INITIALIZER_LIST()))
michael@0:   {
michael@0:     MOZ_COUNT_CTOR(BasicColorLayer);
michael@0:   }
michael@0:   virtual ~BasicColorLayer()
michael@0:   {
michael@0:     MOZ_COUNT_DTOR(BasicColorLayer);
michael@0:   }
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:     ColorLayer::SetVisibleRegion(aRegion);
michael@0:   }
michael@0: 
michael@0:   virtual void Paint(DrawTarget* aDT,
michael@0:                      const gfx::Point& aDeviceOffset,
michael@0:                      Layer* aMaskLayer) MOZ_OVERRIDE
michael@0:   {
michael@0:     if (IsHidden()) {
michael@0:       return;
michael@0:     }
michael@0: 
michael@0:     Rect snapped(mBounds.x, mBounds.y, mBounds.width, mBounds.height);
michael@0:     if (UserToDevicePixelSnapped(snapped, aDT->GetTransform())) {
michael@0:       Matrix mat = aDT->GetTransform();
michael@0:       mat.Invert();
michael@0:       snapped = mat.TransformBounds(snapped);
michael@0:     }
michael@0: 
michael@0:     FillRectWithMask(aDT, aDeviceOffset, snapped, ToColor(mColor),
michael@0:                      DrawOptions(GetEffectiveOpacity(), GetEffectiveOperator(this)),
michael@0:                      aMaskLayer);
michael@0:   }
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: already_AddRefed<ColorLayer>
michael@0: BasicLayerManager::CreateColorLayer()
michael@0: {
michael@0:   NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
michael@0:   nsRefPtr<ColorLayer> layer = new BasicColorLayer(this);
michael@0:   return layer.forget();
michael@0: }
michael@0: 
michael@0: }
michael@0: }