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134 lines
4.5 KiB
C++
134 lines
4.5 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_BASICTHEBESLAYER_H
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#define GFX_BASICTHEBESLAYER_H
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#include "Layers.h" // for ThebesLayer, LayerManager, etc
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#include "RotatedBuffer.h" // for RotatedContentBuffer, etc
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#include "BasicImplData.h" // for BasicImplData
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#include "BasicLayers.h" // for BasicLayerManager
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#include "gfxPoint.h" // for gfxPoint
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#include "mozilla/RefPtr.h" // for RefPtr
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#include "mozilla/gfx/BasePoint.h" // for BasePoint
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#include "mozilla/layers/ContentClient.h" // for ContentClientBasic
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#include "mozilla/mozalloc.h" // for operator delete
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#include "nsDebug.h" // for NS_ASSERTION
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#include "nsISupportsImpl.h" // for MOZ_COUNT_CTOR, etc
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#include "nsRegion.h" // for nsIntRegion
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class gfxContext;
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namespace mozilla {
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namespace layers {
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class ReadbackProcessor;
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class BasicThebesLayer : public ThebesLayer, public BasicImplData {
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public:
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typedef RotatedContentBuffer::PaintState PaintState;
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typedef RotatedContentBuffer::ContentType ContentType;
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explicit BasicThebesLayer(BasicLayerManager* aLayerManager) :
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ThebesLayer(aLayerManager,
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static_cast<BasicImplData*>(MOZ_THIS_IN_INITIALIZER_LIST())),
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mContentClient(nullptr)
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{
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MOZ_COUNT_CTOR(BasicThebesLayer);
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}
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protected:
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virtual ~BasicThebesLayer()
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{
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MOZ_COUNT_DTOR(BasicThebesLayer);
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}
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public:
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virtual void SetVisibleRegion(const nsIntRegion& 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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ThebesLayer::SetVisibleRegion(aRegion);
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}
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virtual void InvalidateRegion(const nsIntRegion& 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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mInvalidRegion.Or(mInvalidRegion, aRegion);
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mInvalidRegion.SimplifyOutward(20);
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mValidRegion.Sub(mValidRegion, mInvalidRegion);
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}
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virtual void PaintThebes(gfxContext* aContext,
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Layer* aMaskLayer,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData);
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virtual void Validate(LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData,
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ReadbackProcessor* aReadback) MOZ_OVERRIDE;
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virtual void ClearCachedResources()
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{
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if (mContentClient) {
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mContentClient->Clear();
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}
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mValidRegion.SetEmpty();
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}
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virtual void ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface)
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{
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if (!BasicManager()->IsRetained()) {
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// Don't do any snapping of our transform, since we're just going to
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// draw straight through without intermediate buffers.
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mEffectiveTransform = GetLocalTransform() * aTransformToSurface;
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if (gfxPoint(0,0) != mResidualTranslation) {
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mResidualTranslation = gfxPoint(0,0);
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mValidRegion.SetEmpty();
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}
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ComputeEffectiveTransformForMaskLayer(aTransformToSurface);
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return;
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}
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ThebesLayer::ComputeEffectiveTransforms(aTransformToSurface);
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}
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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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protected:
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virtual void
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PaintBuffer(gfxContext* aContext,
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const nsIntRegion& aRegionToDraw,
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const nsIntRegion& aExtendedRegionToDraw,
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const nsIntRegion& aRegionToInvalidate,
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bool aDidSelfCopy,
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DrawRegionClip aClip,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData)
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{
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if (!aCallback) {
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BasicManager()->SetTransactionIncomplete();
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return;
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}
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aCallback(this, aContext, aExtendedRegionToDraw, aClip,
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aRegionToInvalidate, aCallbackData);
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// Everything that's visible has been validated. Do this instead of just
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// OR-ing with aRegionToDraw, since that can lead to a very complex region
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// here (OR doesn't automatically simplify to the simplest possible
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// representation of a region.)
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nsIntRegion tmp;
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tmp.Or(mVisibleRegion, aExtendedRegionToDraw);
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mValidRegion.Or(mValidRegion, tmp);
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}
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RefPtr<ContentClientBasic> mContentClient;
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};
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}
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}
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#endif
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