зеркало из https://github.com/mozilla/gecko-dev.git
Bug 626602. Part 2: BasicLayers implementation of ReadbackLayer. r=cjones
This commit is contained in:
Robert O'Callahan
Родитель
1a14aa0939
Коммит
1619ca83d2
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@ -58,6 +58,7 @@
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#include "gfxUtils.h"
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#include "ThebesLayerBuffer.h"
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#include "nsIWidget.h"
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#include "ReadbackProcessor.h"
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#include "GLContext.h"
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@ -106,9 +107,16 @@ public:
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* set up to account for all the properties of the layer (transform,
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* opacity, etc).
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*/
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virtual void Paint(gfxContext* aContext,
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virtual void Paint(gfxContext* aContext) {}
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/**
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* Like Paint() but called for ThebesLayers with the additional parameters
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* they need.
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*/
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virtual void PaintThebes(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData) {}
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void* aCallbackData,
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ReadbackProcessor* aReadback) {}
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virtual ShadowableLayer* AsShadowableLayer() { return nsnull; }
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@ -380,9 +388,10 @@ public:
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mValidRegion.Sub(mValidRegion, aRegion);
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}
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virtual void Paint(gfxContext* aContext,
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virtual void PaintThebes(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData);
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void* aCallbackData,
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ReadbackProcessor* aReadback);
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virtual void ClearCachedResources() { mBuffer.Clear(); mValidRegion.SetEmpty(); }
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@ -507,14 +516,20 @@ PushGroupForLayer(gfxContext* aContext, Layer* aLayer, const nsIntRegion& aRegio
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}
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void
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BasicThebesLayer::Paint(gfxContext* aContext,
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BasicThebesLayer::PaintThebes(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData)
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void* aCallbackData,
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ReadbackProcessor* aReadback)
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{
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NS_ASSERTION(BasicManager()->InDrawing(),
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"Can only draw in drawing phase");
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nsRefPtr<gfxASurface> targetSurface = aContext->CurrentSurface();
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nsTArray<ReadbackProcessor::Update> readbackUpdates;
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if (aReadback && UsedForReadback()) {
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aReadback->GetThebesLayerUpdates(this, &readbackUpdates);
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}
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PRBool canUseOpaqueSurface = CanUseOpaqueSurface();
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Buffer::ContentType contentType =
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canUseOpaqueSurface ? gfxASurface::CONTENT_COLOR :
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@ -525,6 +540,8 @@ BasicThebesLayer::Paint(gfxContext* aContext,
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(!canUseOpaqueSurface &&
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(mContentFlags & CONTENT_COMPONENT_ALPHA) &&
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!MustRetainContent())) {
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NS_ASSERTION(readbackUpdates.IsEmpty(), "Can't do readback for non-retained layer");
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mValidRegion.SetEmpty();
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mBuffer.Clear();
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@ -587,6 +604,20 @@ BasicThebesLayer::Paint(gfxContext* aContext,
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}
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mBuffer.DrawTo(this, aContext, opacity);
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for (PRUint32 i = 0; i < readbackUpdates.Length(); ++i) {
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ReadbackProcessor::Update& update = readbackUpdates[i];
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nsIntPoint offset = update.mLayer->GetBackgroundLayerOffset();
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nsRefPtr<gfxContext> ctx =
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update.mLayer->GetSink()->BeginUpdate(update.mUpdateRect + offset,
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update.mSequenceCounter);
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if (ctx) {
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NS_ASSERTION(opacity == 1.0, "Should only read back opaque layers");
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ctx->Translate(gfxPoint(offset.x, offset.y));
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mBuffer.DrawTo(this, ctx, 1.0);
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update.mLayer->GetSink()->EndUpdate(ctx, update.mUpdateRect + offset);
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}
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}
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}
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static PRBool
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@ -667,9 +698,7 @@ public:
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ImageLayer::SetVisibleRegion(aRegion);
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}
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virtual void Paint(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData);
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virtual void Paint(gfxContext* aContext);
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static void PaintContext(gfxPattern* aPattern,
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const nsIntRegion& aVisible,
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@ -691,9 +720,7 @@ protected:
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};
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void
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BasicImageLayer::Paint(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData)
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BasicImageLayer::Paint(gfxContext* aContext)
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{
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nsRefPtr<gfxPattern> dontcare =
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GetAndPaintCurrentImage(aContext, GetEffectiveOpacity());
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@ -799,9 +826,7 @@ public:
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ColorLayer::SetVisibleRegion(aRegion);
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}
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virtual void Paint(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData)
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virtual void Paint(gfxContext* aContext)
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{
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PaintColorTo(mColor, GetEffectiveOpacity(), aContext);
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}
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@ -847,9 +872,7 @@ public:
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virtual void Initialize(const Data& aData);
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virtual void Updated(const nsIntRect& aRect);
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virtual void Paint(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData);
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virtual void Paint(gfxContext* aContext);
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virtual void PaintWithOpacity(gfxContext* aContext,
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float aOpacity);
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@ -959,9 +982,7 @@ BasicCanvasLayer::Updated(const nsIntRect& aRect)
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}
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void
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BasicCanvasLayer::Paint(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData)
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BasicCanvasLayer::Paint(gfxContext* aContext)
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{
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PaintWithOpacity(aContext, GetEffectiveOpacity());
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}
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@ -998,6 +1019,34 @@ BasicCanvasLayer::PaintWithOpacity(gfxContext* aContext,
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mUpdatedRect.Empty();
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}
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class BasicReadbackLayer : public ReadbackLayer,
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BasicImplData
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{
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public:
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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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virtual ~BasicReadbackLayer()
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{
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MOZ_COUNT_DTOR(BasicReadbackLayer);
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}
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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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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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static nsIntRect
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ToOutsideIntRect(const gfxRect &aRect)
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{
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@ -1298,7 +1347,7 @@ BasicLayerManager::EndTransactionInternal(DrawThebesLayerCallback aCallback,
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MarkLeafLayersCoveredByOpaque(mRoot,
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mRoot->GetEffectiveVisibleRegion().GetBounds(),
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region);
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PaintLayer(mRoot, aCallback, aCallbackData);
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PaintLayer(mRoot, aCallback, aCallbackData, nsnull);
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// If we're doing manual double-buffering, we need to avoid drawing
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// the results of an incomplete transaction to the destination surface.
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@ -1369,7 +1418,8 @@ BasicLayerManager::SetRoot(Layer* aLayer)
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void
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BasicLayerManager::PaintLayer(Layer* aLayer,
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DrawThebesLayerCallback aCallback,
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void* aCallbackData)
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void* aCallbackData,
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ReadbackProcessor* aReadback)
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{
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const nsIntRect* clipRect = aLayer->GetEffectiveClipRect();
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const gfx3DMatrix& effectiveTransform = aLayer->GetEffectiveTransform();
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@ -1431,11 +1481,21 @@ BasicLayerManager::PaintLayer(Layer* aLayer,
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(void*)aLayer, data->IsCoveredByOpaque()));
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#endif
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if (!data->IsCoveredByOpaque()) {
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data->Paint(mTarget, aCallback, aCallbackData);
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if (aLayer->AsThebesLayer()) {
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data->PaintThebes(mTarget, aCallback, aCallbackData, aReadback);
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} else {
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data->Paint(mTarget);
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}
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}
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} else {
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ReadbackProcessor readback;
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if (IsRetained()) {
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ContainerLayer* container = static_cast<ContainerLayer*>(aLayer);
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readback.BuildUpdates(container);
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}
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for (; child; child = child->GetNextSibling()) {
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PaintLayer(child, aCallback, aCallbackData);
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PaintLayer(child, aCallback, aCallbackData, &readback);
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if (mTransactionIncomplete)
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break;
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}
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@ -1519,6 +1579,13 @@ BasicLayerManager::CreateCanvasLayer()
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return layer.forget();
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}
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already_AddRefed<ReadbackLayer>
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BasicLayerManager::CreateReadbackLayer()
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{
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NS_ASSERTION(InConstruction(), "Only allowed in construction phase");
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nsRefPtr<ReadbackLayer> layer = new BasicReadbackLayer(this);
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return layer.forget();
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}
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#ifdef MOZ_IPC
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@ -1575,6 +1642,19 @@ ToShadowable(Layer* aLayer)
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return ToData(aLayer)->AsShadowableLayer();
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}
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// Some layers, like ReadbackLayers, can't be shadowed and shadowing
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// them doesn't make sense anyway
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static bool
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ShouldShadow(Layer* aLayer)
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{
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if (!ToShadowable(aLayer)) {
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NS_ABORT_IF_FALSE(aLayer->GetType() == Layer::TYPE_READBACK,
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"Only expect not to shadow ReadbackLayers");
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return false;
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}
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return true;
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}
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template<class OpT>
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static BasicShadowableLayer*
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GetBasicShadowable(const OpT& op)
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@ -1622,7 +1702,10 @@ private:
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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()) {
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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) : nsnull);
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@ -1633,7 +1716,7 @@ BasicShadowableContainerLayer::InsertAfter(Layer* aChild, Layer* aAfter)
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void
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BasicShadowableContainerLayer::RemoveChild(Layer* aChild)
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{
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if (HasShadow()) {
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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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@ -1857,9 +1940,7 @@ public:
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MOZ_COUNT_DTOR(BasicShadowableImageLayer);
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}
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virtual void Paint(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData);
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virtual void Paint(gfxContext* aContext);
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virtual void FillSpecificAttributes(SpecificLayerAttributes& aAttrs)
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{
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@ -1890,9 +1971,7 @@ private:
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};
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void
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BasicShadowableImageLayer::Paint(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData)
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BasicShadowableImageLayer::Paint(gfxContext* aContext)
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{
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gfxIntSize oldSize = mSize;
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nsRefPtr<gfxPattern> pat = GetAndPaintCurrentImage(aContext, GetEffectiveOpacity());
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@ -1977,9 +2056,7 @@ public:
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}
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virtual void Initialize(const Data& aData);
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virtual void Paint(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData);
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virtual void Paint(gfxContext* aContext);
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virtual void FillSpecificAttributes(SpecificLayerAttributes& aAttrs)
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{
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@ -2040,11 +2117,9 @@ BasicShadowableCanvasLayer::Initialize(const Data& aData)
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}
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void
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BasicShadowableCanvasLayer::Paint(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData)
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BasicShadowableCanvasLayer::Paint(gfxContext* aContext)
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{
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BasicCanvasLayer::Paint(aContext, aCallback, aCallbackData);
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BasicCanvasLayer::Paint(aContext);
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if (!HasShadow())
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return;
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@ -2167,9 +2242,10 @@ public:
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}
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}
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virtual void Paint(gfxContext* aContext,
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virtual void PaintThebes(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData);
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void* aCallbackData,
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ReadbackProcessor* aReadback);
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private:
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BasicShadowLayerManager* BasicManager()
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@ -2261,9 +2337,10 @@ BasicShadowThebesLayer::Swap(const ThebesBuffer& aNewFront,
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}
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void
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BasicShadowThebesLayer::Paint(gfxContext* aContext,
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BasicShadowThebesLayer::PaintThebes(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData)
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void* aCallbackData,
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ReadbackProcessor* aReadback)
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{
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NS_ASSERTION(BasicManager()->InDrawing(),
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"Can only draw in drawing phase");
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@ -2357,9 +2434,7 @@ public:
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mFrontSurface = nsnull;
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}
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virtual void Paint(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData);
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virtual void Paint(gfxContext* aContext);
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protected:
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BasicShadowLayerManager* BasicManager()
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@ -2390,9 +2465,7 @@ BasicShadowImageLayer::Swap(gfxSharedImageSurface* newFront)
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}
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void
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BasicShadowImageLayer::Paint(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData)
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BasicShadowImageLayer::Paint(gfxContext* aContext)
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{
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if (!mFrontSurface) {
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return;
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@ -2425,9 +2498,7 @@ public:
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MOZ_COUNT_DTOR(BasicShadowColorLayer);
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}
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virtual void Paint(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData)
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virtual void Paint(gfxContext* aContext)
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{
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BasicColorLayer::PaintColorTo(mColor, GetEffectiveOpacity(), aContext);
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}
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@ -2469,9 +2540,7 @@ public:
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mFrontSurface = nsnull;
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}
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virtual void Paint(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
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void* aCallbackData);
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virtual void Paint(gfxContext* aContext);
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private:
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BasicShadowLayerManager* BasicManager()
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@ -2503,9 +2572,7 @@ BasicShadowCanvasLayer::Swap(gfxSharedImageSurface* newFront)
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}
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void
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BasicShadowCanvasLayer::Paint(gfxContext* aContext,
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LayerManager::DrawThebesLayerCallback aCallback,
|
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void* aCallbackData)
|
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BasicShadowCanvasLayer::Paint(gfxContext* aContext)
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{
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NS_ASSERTION(BasicManager()->InDrawing(),
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"Can only draw in drawing phase");
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|
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@ -2676,7 +2743,7 @@ BasicShadowLayerManager::Mutated(Layer* aLayer)
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BasicLayerManager::Mutated(aLayer);
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NS_ASSERTION(InConstruction() || InDrawing(), "wrong phase");
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if (HasShadowManager()) {
|
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if (HasShadowManager() && ShouldShadow(aLayer)) {
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ShadowLayerForwarder::Mutated(Hold(aLayer));
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}
|
||||
}
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||||
|
|
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|||
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@ -60,6 +60,7 @@ class ShadowContainerLayer;
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class ShadowImageLayer;
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class ShadowCanvasLayer;
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class ShadowColorLayer;
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class ReadbackProcessor;
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/**
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* This is a cairo/Thebes-only, main-thread-only implementation of layers.
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@ -152,16 +153,17 @@ public:
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virtual already_AddRefed<CanvasLayer> CreateCanvasLayer();
|
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virtual already_AddRefed<ImageContainer> CreateImageContainer();
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virtual already_AddRefed<ColorLayer> CreateColorLayer();
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virtual already_AddRefed<ReadbackLayer> CreateReadbackLayer();
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virtual already_AddRefed<ShadowThebesLayer> CreateShadowThebesLayer()
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{ return NULL; }
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{ return nsnull; }
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virtual already_AddRefed<ShadowContainerLayer> CreateShadowContainerLayer()
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{ return NULL; }
|
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{ return nsnull; }
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virtual already_AddRefed<ShadowImageLayer> CreateShadowImageLayer()
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{ return NULL; }
|
||||
{ return nsnull; }
|
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virtual already_AddRefed<ShadowColorLayer> CreateShadowColorLayer()
|
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{ return NULL; }
|
||||
{ return nsnull; }
|
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virtual already_AddRefed<ShadowCanvasLayer> CreateShadowCanvasLayer()
|
||||
{ return NULL; }
|
||||
{ return nsnull; }
|
||||
|
||||
virtual LayersBackend GetBackendType() { return LAYERS_BASIC; }
|
||||
virtual void GetBackendName(nsAString& name) { name.AssignLiteral("Basic"); }
|
||||
|
|
@ -197,7 +199,8 @@ protected:
|
|||
// Paints aLayer to mTarget.
|
||||
void PaintLayer(Layer* aLayer,
|
||||
DrawThebesLayerCallback aCallback,
|
||||
void* aCallbackData);
|
||||
void* aCallbackData,
|
||||
ReadbackProcessor* aReadback);
|
||||
|
||||
// Clear the contents of a layer
|
||||
void ClearLayer(Layer* aLayer);
|
||||
|
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|
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