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ce43f3d0c1
This is all wasted effort in sky since we invalidate the whole viewport on every frame. We'll probably eventually add back in some invalidation, but it likely won't be rect-based. R=esprehn@chromium.org Review URL: https://codereview.chromium.org/840403003
140 lines
4.8 KiB
C++
140 lines
4.8 KiB
C++
/*
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* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
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* (C) 1999 Antti Koivisto (koivisto@kde.org)
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* (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
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* (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
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* Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
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* Copyright (C) 2010, 2012 Google Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "sky/engine/config.h"
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#include "sky/engine/core/rendering/RenderLayerModelObject.h"
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#include "sky/engine/core/frame/LocalFrame.h"
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#include "sky/engine/core/rendering/RenderLayer.h"
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#include "sky/engine/core/rendering/RenderView.h"
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namespace blink {
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RenderLayerModelObject::RenderLayerModelObject(ContainerNode* node)
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: RenderObject(node)
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{
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}
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RenderLayerModelObject::~RenderLayerModelObject()
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{
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// Our layer should have been destroyed and cleared by now
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ASSERT(!hasLayer());
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ASSERT(!m_layer);
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}
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void RenderLayerModelObject::destroyLayer()
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{
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setHasLayer(false);
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m_layer = nullptr;
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}
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void RenderLayerModelObject::createLayer(LayerType type)
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{
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ASSERT(!m_layer);
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m_layer = adoptPtr(new RenderLayer(this, type));
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setHasLayer(true);
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m_layer->insertOnlyThisLayer();
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}
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bool RenderLayerModelObject::hasSelfPaintingLayer() const
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{
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return m_layer && m_layer->isSelfPaintingLayer();
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}
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ScrollableArea* RenderLayerModelObject::scrollableArea() const
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{
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return m_layer ? m_layer->scrollableArea() : 0;
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}
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void RenderLayerModelObject::willBeDestroyed()
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{
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RenderObject::willBeDestroyed();
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destroyLayer();
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}
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void RenderLayerModelObject::styleWillChange(StyleDifference diff, const RenderStyle& newStyle)
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{
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if (RenderStyle* oldStyle = style()) {
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if (parent() && diff.needsPaintInvalidationLayer()) {
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if (oldStyle->hasAutoClip() != newStyle.hasAutoClip()
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|| oldStyle->clip() != newStyle.clip())
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layer()->clipper().clearClipRectsIncludingDescendants();
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}
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}
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RenderObject::styleWillChange(diff, newStyle);
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}
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void RenderLayerModelObject::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
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{
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bool hadTransform = hasTransform();
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RenderObject::styleDidChange(diff, oldStyle);
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updateFromStyle();
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LayerType type = layerTypeRequired();
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if (type != NoLayer) {
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if (!layer()) {
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createLayer(type);
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if (parent() && !needsLayout()) {
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// FIXME: This invalidation is overly broad. We should update to
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// do the correct invalidation at RenderStyle::diff time. crbug.com/349061
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layer()->renderer()->setShouldDoFullPaintInvalidation(true);
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// FIXME: We should call a specialized version of this function.
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layer()->updateLayerPositionsAfterLayout();
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}
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}
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} else if (layer() && layer()->parent()) {
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setHasTransform(false); // Either a transform wasn't specified or the object doesn't support transforms, so just null out the bit.
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layer()->removeOnlyThisLayer(); // calls destroyLayer() which clears m_layer
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if (hadTransform)
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setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation();
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}
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if (layer()) {
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// FIXME: Ideally we shouldn't need this setter but we can't easily infer an overflow-only layer
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// from the style.
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layer()->setLayerType(type);
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layer()->styleChanged(diff, oldStyle);
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}
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}
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void RenderLayerModelObject::invalidateTreeIfNeeded(const PaintInvalidationState& paintInvalidationState)
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{
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// FIXME: SVG should probably also go through this unified paint invalidation system.
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ASSERT(!needsLayout());
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if (!shouldCheckForPaintInvalidation(paintInvalidationState))
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return;
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const RenderLayerModelObject& newPaintInvalidationContainer = *adjustCompositedContainerForSpecialAncestors(&paintInvalidationState.paintInvalidationContainer());
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ASSERT(&newPaintInvalidationContainer == containerForPaintInvalidation());
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PaintInvalidationState childTreeWalkState(paintInvalidationState, *this, newPaintInvalidationContainer);
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RenderObject::invalidateTreeIfNeeded(childTreeWalkState);
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}
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} // namespace blink
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