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Diffstat (limited to 'gfx/layers/basic/BasicColorLayer.cpp')
-rw-r--r-- | gfx/layers/basic/BasicColorLayer.cpp | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/gfx/layers/basic/BasicColorLayer.cpp b/gfx/layers/basic/BasicColorLayer.cpp new file mode 100644 index 000000000..182bc785b --- /dev/null +++ b/gfx/layers/basic/BasicColorLayer.cpp @@ -0,0 +1,83 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "BasicLayersImpl.h" // for FillRectWithMask, etc +#include "Layers.h" // for ColorLayer, etc +#include "BasicImplData.h" // for BasicImplData +#include "BasicLayers.h" // for BasicLayerManager +#include "gfxContext.h" // for gfxContext, etc +#include "gfxRect.h" // for gfxRect +#include "gfx2DGlue.h" +#include "mozilla/mozalloc.h" // for operator new +#include "nsCOMPtr.h" // for already_AddRefed +#include "nsDebug.h" // for NS_ASSERTION +#include "nsISupportsImpl.h" // for Layer::AddRef, etc +#include "nsRect.h" // for mozilla::gfx::IntRect +#include "nsRegion.h" // for nsIntRegion +#include "mozilla/gfx/PathHelpers.h" + +using namespace mozilla::gfx; + +namespace mozilla { +namespace layers { + +class BasicColorLayer : public ColorLayer, public BasicImplData { +public: + explicit BasicColorLayer(BasicLayerManager* aLayerManager) : + ColorLayer(aLayerManager, static_cast<BasicImplData*>(this)) + { + MOZ_COUNT_CTOR(BasicColorLayer); + } + +protected: + virtual ~BasicColorLayer() + { + MOZ_COUNT_DTOR(BasicColorLayer); + } + +public: + virtual void SetVisibleRegion(const LayerIntRegion& aRegion) override + { + NS_ASSERTION(BasicManager()->InConstruction(), + "Can only set properties in construction phase"); + ColorLayer::SetVisibleRegion(aRegion); + } + + virtual void Paint(DrawTarget* aDT, + const gfx::Point& aDeviceOffset, + Layer* aMaskLayer) override + { + if (IsHidden()) { + return; + } + + Rect snapped(mBounds.x, mBounds.y, mBounds.width, mBounds.height); + MaybeSnapToDevicePixels(snapped, *aDT, true); + + // Clip drawing in case we're using (unbounded) operator source. + aDT->PushClipRect(snapped); + FillRectWithMask(aDT, aDeviceOffset, snapped, mColor, + DrawOptions(GetEffectiveOpacity(), GetEffectiveOperator(this)), + aMaskLayer); + aDT->PopClip(); + } + +protected: + BasicLayerManager* BasicManager() + { + return static_cast<BasicLayerManager*>(mManager); + } +}; + +already_AddRefed<ColorLayer> +BasicLayerManager::CreateColorLayer() +{ + NS_ASSERTION(InConstruction(), "Only allowed in construction phase"); + RefPtr<ColorLayer> layer = new BasicColorLayer(this); + return layer.forget(); +} + +} // namespace layers +} // namespace mozilla |