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2793661b5a
We never paint scroll corners. The only thing we need them for is so that the vertical and horizontal scrollbars don't overlap each other. So, that's the only place left that still computes a scroll corner rect. We don't support resizers. Remove the code for them as well as the CSS resize property. R=abarth@chromium.org Review URL: https://codereview.chromium.org/689283003
112 lines
5.4 KiB
C++
112 lines
5.4 KiB
C++
/*
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* Copyright (C) 2009, 2010 Apple Inc. All rights reserved.
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* Copyright (C) 2014 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "core/rendering/compositing/GraphicsLayerTreeBuilder.h"
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#include "core/rendering/RenderLayer.h"
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#include "core/rendering/RenderView.h"
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#include "core/rendering/compositing/CompositedLayerMapping.h"
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#include "core/rendering/compositing/RenderLayerCompositor.h"
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namespace blink {
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GraphicsLayerTreeBuilder::GraphicsLayerTreeBuilder()
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{
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}
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GraphicsLayerTreeBuilder::~GraphicsLayerTreeBuilder()
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{
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}
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void GraphicsLayerTreeBuilder::rebuild(RenderLayer& layer, AncestorInfo info)
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{
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// Make the layer compositing if necessary, and set up clipping and content layers.
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// Note that we can only do work here that is independent of whether the descendant layers
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// have been processed. computeCompositingRequirements() will already have done the paint invalidation if necessary.
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layer.stackingNode()->updateLayerListsIfNeeded();
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const bool hasCompositedLayerMapping = layer.hasCompositedLayerMapping();
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CompositedLayerMapping* currentCompositedLayerMapping = layer.compositedLayerMapping();
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// If this layer has a compositedLayerMapping, then that is where we place subsequent children GraphicsLayers.
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// Otherwise children continue to append to the child list of the enclosing layer.
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GraphicsLayerVector layerChildren;
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AncestorInfo infoForChildren(info);
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if (hasCompositedLayerMapping) {
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infoForChildren.childLayersOfEnclosingCompositedLayer = &layerChildren;
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infoForChildren.enclosingCompositedLayer = &layer;
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}
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#if ENABLE(ASSERT)
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LayerListMutationDetector mutationChecker(layer.stackingNode());
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#endif
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if (layer.stackingNode()->isStackingContext()) {
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RenderLayerStackingNodeIterator iterator(*layer.stackingNode(), NegativeZOrderChildren);
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while (RenderLayerStackingNode* curNode = iterator.next())
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rebuild(*curNode->layer(), infoForChildren);
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// If a negative z-order child is compositing, we get a foreground layer which needs to get parented.
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if (hasCompositedLayerMapping && currentCompositedLayerMapping->foregroundLayer())
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infoForChildren.childLayersOfEnclosingCompositedLayer->append(currentCompositedLayerMapping->foregroundLayer());
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}
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RenderLayerStackingNodeIterator iterator(*layer.stackingNode(), NormalFlowChildren | PositiveZOrderChildren);
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while (RenderLayerStackingNode* curNode = iterator.next())
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rebuild(*curNode->layer(), infoForChildren);
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if (hasCompositedLayerMapping) {
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currentCompositedLayerMapping->parentForSublayers()->setChildren(layerChildren);
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// If the layer has a clipping layer the overflow controls layers will be siblings of the clipping layer.
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// Otherwise, the overflow control layers are normal children.
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// FIXME: Why isn't this handled in CLM updateInternalHierarchy?
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if (!currentCompositedLayerMapping->hasClippingLayer() && !currentCompositedLayerMapping->hasScrollingLayer()) {
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if (GraphicsLayer* overflowControlLayer = currentCompositedLayerMapping->layerForHorizontalScrollbar()) {
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overflowControlLayer->removeFromParent();
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currentCompositedLayerMapping->parentForSublayers()->addChild(overflowControlLayer);
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}
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if (GraphicsLayer* overflowControlLayer = currentCompositedLayerMapping->layerForVerticalScrollbar()) {
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overflowControlLayer->removeFromParent();
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currentCompositedLayerMapping->parentForSublayers()->addChild(overflowControlLayer);
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}
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}
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info.childLayersOfEnclosingCompositedLayer->append(currentCompositedLayerMapping->childForSuperlayers());
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}
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if (layer.scrollParent()
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&& layer.scrollParent()->hasCompositedLayerMapping()
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&& layer.scrollParent()->compositedLayerMapping()->needsToReparentOverflowControls()
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&& layer.scrollParent()->scrollableArea()->topmostScrollChild() == &layer)
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info.childLayersOfEnclosingCompositedLayer->append(layer.scrollParent()->compositedLayerMapping()->detachLayerForOverflowControls(*info.enclosingCompositedLayer));
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}
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}
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