152 lines
4.8 KiB
C++
152 lines
4.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GFX_BASICLAYERSIMPL_H
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#define GFX_BASICLAYERSIMPL_H
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#include "BasicImplData.h" // for BasicImplData
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#include "BasicLayers.h" // for BasicLayerManager
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#include "ReadbackLayer.h" // for ReadbackLayer
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#include "gfxContext.h" // for gfxContext, etc
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#include "mozilla/Attributes.h" // for MOZ_STACK_CLASS
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#include "mozilla/Maybe.h" // for Maybe
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#include "nsDebug.h" // for NS_ASSERTION
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#include "nsISupportsImpl.h" // for gfxContext::Release, etc
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#include "nsRegion.h" // for nsIntRegion
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namespace mozilla {
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namespace gfx {
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class DrawTarget;
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} // namespace gfx
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namespace layers {
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class AutoMoz2DMaskData;
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class Layer;
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class AutoSetOperator {
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typedef mozilla::gfx::CompositionOp CompositionOp;
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public:
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AutoSetOperator(gfxContext* aContext, CompositionOp aOperator) {
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if (aOperator != CompositionOp::OP_OVER) {
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aContext->SetOp(aOperator);
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mContext = aContext;
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}
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}
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~AutoSetOperator() {
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if (mContext) {
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mContext->SetOp(CompositionOp::OP_OVER);
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}
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}
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private:
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RefPtr<gfxContext> mContext;
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};
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class BasicReadbackLayer : public ReadbackLayer,
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public BasicImplData
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{
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public:
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explicit BasicReadbackLayer(BasicLayerManager* aLayerManager) :
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ReadbackLayer(aLayerManager, static_cast<BasicImplData*>(this))
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{
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MOZ_COUNT_CTOR(BasicReadbackLayer);
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}
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protected:
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virtual ~BasicReadbackLayer()
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{
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MOZ_COUNT_DTOR(BasicReadbackLayer);
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}
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public:
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virtual void SetVisibleRegion(const LayerIntRegion& aRegion)
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{
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NS_ASSERTION(BasicManager()->InConstruction(),
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"Can only set properties in construction phase");
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ReadbackLayer::SetVisibleRegion(aRegion);
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}
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protected:
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BasicLayerManager* BasicManager()
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{
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return static_cast<BasicLayerManager*>(mManager);
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}
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};
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/*
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* Extract a mask surface for a mask layer
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* Returns true and through outparams a surface for the mask layer if
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* a mask layer is present and has a valid surface and transform;
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* false otherwise.
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* The transform for the layer will be put in aMaskData
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*/
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bool
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GetMaskData(Layer* aMaskLayer,
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const gfx::Point& aDeviceOffset,
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AutoMoz2DMaskData* aMaskData);
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already_AddRefed<gfx::SourceSurface> GetMaskForLayer(Layer* aLayer, gfx::Matrix* aMaskTransform);
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// Paint the current source to a context using a mask, if present
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void
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PaintWithMask(gfxContext* aContext, float aOpacity, Layer* aMaskLayer);
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// Fill the rect with the source, using a mask and opacity, if present
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void
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FillRectWithMask(gfx::DrawTarget* aDT,
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const gfx::Rect& aRect,
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const gfx::Color& aColor,
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const gfx::DrawOptions& aOptions,
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gfx::SourceSurface* aMaskSource = nullptr,
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const gfx::Matrix* aMaskTransform = nullptr);
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void
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FillRectWithMask(gfx::DrawTarget* aDT,
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const gfx::Rect& aRect,
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gfx::SourceSurface* aSurface,
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gfx::SamplingFilter aSamplingFilter,
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const gfx::DrawOptions& aOptions,
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gfx::ExtendMode aExtendMode,
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gfx::SourceSurface* aMaskSource = nullptr,
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const gfx::Matrix* aMaskTransform = nullptr,
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const gfx::Matrix* aSurfaceTransform = nullptr);
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void
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FillRectWithMask(gfx::DrawTarget* aDT,
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const gfx::Point& aDeviceOffset,
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const gfx::Rect& aRect,
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gfx::SourceSurface* aSurface,
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gfx::SamplingFilter aSamplingFilter,
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const gfx::DrawOptions& aOptions,
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Layer* aMaskLayer);
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void
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FillRectWithMask(gfx::DrawTarget* aDT,
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const gfx::Point& aDeviceOffset,
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const gfx::Rect& aRect,
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const gfx::Color& aColor,
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const gfx::DrawOptions& aOptions,
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Layer* aMaskLayer);
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BasicImplData*
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ToData(Layer* aLayer);
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/**
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* Returns the operator to be used when blending and compositing this layer.
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* Currently there is no way to specify both a blending and a compositing
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* operator other than normal and source over respectively.
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*
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* If the layer has
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* an effective blend mode operator other than normal, as returned by
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* GetEffectiveMixBlendMode, this operator is used for blending, and source
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* over is used for compositing.
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* If the blend mode for this layer is normal, the compositing operator
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* returned by GetOperator is used.
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*/
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gfx::CompositionOp
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GetEffectiveOperator(Layer* aLayer);
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} // namespace layers
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} // namespace mozilla
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#endif
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