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7874452a54
Add a function that can be used to quickly reposition a layer child, rather than forcing removal/insertion and the extra work that can involve.
256 lines
7.6 KiB
C++
256 lines
7.6 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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#include "BasicLayersImpl.h"
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#include "BasicContainerLayer.h"
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using namespace mozilla::gfx;
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namespace mozilla {
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namespace layers {
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BasicContainerLayer::~BasicContainerLayer()
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{
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while (mFirstChild) {
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ContainerRemoveChild(mFirstChild, this);
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}
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MOZ_COUNT_DTOR(BasicContainerLayer);
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}
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bool
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BasicContainerLayer::ChildrenPartitionVisibleRegion(const nsIntRect& aInRect)
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{
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gfxMatrix transform;
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if (!GetEffectiveTransform().CanDraw2D(&transform) ||
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transform.HasNonIntegerTranslation())
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return false;
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nsIntPoint offset(int32_t(transform.x0), int32_t(transform.y0));
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nsIntRect rect = aInRect.Intersect(GetEffectiveVisibleRegion().GetBounds() + offset);
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nsIntRegion covered;
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for (Layer* l = mFirstChild; l; l = l->GetNextSibling()) {
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if (ToData(l)->IsHidden())
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continue;
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gfxMatrix childTransform;
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if (!l->GetEffectiveTransform().CanDraw2D(&childTransform) ||
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childTransform.HasNonIntegerTranslation() ||
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l->GetEffectiveOpacity() != 1.0)
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return false;
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nsIntRegion childRegion = l->GetEffectiveVisibleRegion();
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childRegion.MoveBy(int32_t(childTransform.x0), int32_t(childTransform.y0));
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childRegion.And(childRegion, rect);
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if (l->GetClipRect()) {
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childRegion.And(childRegion, *l->GetClipRect() + offset);
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}
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nsIntRegion intersection;
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intersection.And(covered, childRegion);
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if (!intersection.IsEmpty())
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return false;
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covered.Or(covered, childRegion);
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}
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return covered.Contains(rect);
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}
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class BasicShadowableContainerLayer : public BasicContainerLayer,
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public BasicShadowableLayer {
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public:
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BasicShadowableContainerLayer(BasicShadowLayerManager* aManager) :
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BasicContainerLayer(aManager)
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{
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MOZ_COUNT_CTOR(BasicShadowableContainerLayer);
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}
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virtual ~BasicShadowableContainerLayer()
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{
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MOZ_COUNT_DTOR(BasicShadowableContainerLayer);
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}
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virtual void InsertAfter(Layer* aChild, Layer* aAfter);
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virtual void RemoveChild(Layer* aChild);
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virtual void RepositionChild(Layer* aChild, Layer* aAfter);
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virtual Layer* AsLayer() { return this; }
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virtual ShadowableLayer* AsShadowableLayer() { return this; }
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virtual void Disconnect()
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{
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BasicShadowableLayer::Disconnect();
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}
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private:
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BasicShadowLayerManager* ShadowManager()
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{
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return static_cast<BasicShadowLayerManager*>(mManager);
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}
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};
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void
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BasicShadowableContainerLayer::InsertAfter(Layer* aChild, Layer* aAfter)
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{
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if (HasShadow() && ShouldShadow(aChild)) {
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while (aAfter && !ShouldShadow(aAfter)) {
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aAfter = aAfter->GetPrevSibling();
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}
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ShadowManager()->InsertAfter(ShadowManager()->Hold(this),
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ShadowManager()->Hold(aChild),
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aAfter ? ShadowManager()->Hold(aAfter) : nullptr);
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}
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BasicContainerLayer::InsertAfter(aChild, aAfter);
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}
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void
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BasicShadowableContainerLayer::RemoveChild(Layer* aChild)
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{
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if (HasShadow() && ShouldShadow(aChild)) {
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ShadowManager()->RemoveChild(ShadowManager()->Hold(this),
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ShadowManager()->Hold(aChild));
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}
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BasicContainerLayer::RemoveChild(aChild);
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}
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void
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BasicShadowableContainerLayer::RepositionChild(Layer* aChild, Layer* aAfter)
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{
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if (HasShadow() && ShouldShadow(aChild)) {
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while (aAfter && !ShouldShadow(aAfter)) {
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aAfter = aAfter->GetPrevSibling();
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}
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ShadowManager()->RepositionChild(ShadowManager()->Hold(this),
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ShadowManager()->Hold(aChild),
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aAfter ? ShadowManager()->Hold(aAfter) : nullptr);
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}
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BasicContainerLayer::RepositionChild(aChild, aAfter);
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}
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class BasicShadowContainerLayer : public ShadowContainerLayer, public BasicImplData {
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template<class Container>
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friend void ContainerInsertAfter(Layer* aChild, Layer* aAfter, Container* aContainer);
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template<class Container>
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friend void ContainerRemoveChild(Layer* aChild, Container* aContainer);
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template<class Container>
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friend void ContainerRepositionChild(Layer* aChild, Layer* aAfter, Container* aContainer);
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template<class Container>
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friend void ContainerComputeEffectiveTransforms(const gfx3DMatrix& aTransformToSurface,
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Container* aContainer);
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public:
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BasicShadowContainerLayer(BasicShadowLayerManager* aLayerManager) :
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ShadowContainerLayer(aLayerManager, static_cast<BasicImplData*>(this))
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{
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MOZ_COUNT_CTOR(BasicShadowContainerLayer);
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}
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virtual ~BasicShadowContainerLayer()
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{
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while (mFirstChild) {
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ContainerRemoveChild(mFirstChild, this);
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}
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MOZ_COUNT_DTOR(BasicShadowContainerLayer);
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}
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virtual void InsertAfter(Layer* aChild, Layer* aAfter)
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{ ContainerInsertAfter(aChild, aAfter, this); }
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virtual void RemoveChild(Layer* aChild)
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{ ContainerRemoveChild(aChild, this); }
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virtual void RepositionChild(Layer* aChild, Layer* aAfter)
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{ ContainerRepositionChild(aChild, aAfter, this); }
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virtual void ComputeEffectiveTransforms(const gfx3DMatrix& aTransformToSurface)
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{
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ContainerComputeEffectiveTransforms(aTransformToSurface, this);
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}
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};
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class BasicShadowableRefLayer : public RefLayer, public BasicImplData,
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public BasicShadowableLayer {
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template<class Container>
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friend void ContainerComputeEffectiveTransforms(const gfx3DMatrix& aTransformToSurface,
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Container* aContainer);
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public:
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BasicShadowableRefLayer(BasicShadowLayerManager* aManager) :
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RefLayer(aManager, static_cast<BasicImplData*>(this))
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{
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MOZ_COUNT_CTOR(BasicShadowableRefLayer);
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}
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virtual ~BasicShadowableRefLayer()
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{
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MOZ_COUNT_DTOR(BasicShadowableRefLayer);
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}
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virtual Layer* AsLayer() { return this; }
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virtual ShadowableLayer* AsShadowableLayer() { return this; }
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virtual void Disconnect()
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{
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BasicShadowableLayer::Disconnect();
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}
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virtual void ComputeEffectiveTransforms(const gfx3DMatrix& aTransformToSurface)
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{
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ContainerComputeEffectiveTransforms(aTransformToSurface, this);
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}
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private:
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BasicShadowLayerManager* ShadowManager()
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{
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return static_cast<BasicShadowLayerManager*>(mManager);
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}
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};
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already_AddRefed<ContainerLayer>
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BasicLayerManager::CreateContainerLayer()
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{
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NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
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nsRefPtr<ContainerLayer> layer = new BasicContainerLayer(this);
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return layer.forget();
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}
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already_AddRefed<ContainerLayer>
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BasicShadowLayerManager::CreateContainerLayer()
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{
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NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
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nsRefPtr<BasicShadowableContainerLayer> layer =
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new BasicShadowableContainerLayer(this);
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MAYBE_CREATE_SHADOW(Container);
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return layer.forget();
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}
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already_AddRefed<RefLayer>
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BasicShadowLayerManager::CreateRefLayer()
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{
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NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
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nsRefPtr<BasicShadowableRefLayer> layer =
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new BasicShadowableRefLayer(this);
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MAYBE_CREATE_SHADOW(Ref);
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return layer.forget();
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}
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already_AddRefed<ShadowContainerLayer>
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BasicShadowLayerManager::CreateShadowContainerLayer()
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{
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NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
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nsRefPtr<ShadowContainerLayer> layer = new BasicShadowContainerLayer(this);
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return layer.forget();
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}
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already_AddRefed<ShadowRefLayer>
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BasicShadowLayerManager::CreateShadowRefLayer()
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{
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NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
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// FIXME/IMPL
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return nullptr;
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}
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}
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}
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