void RenderLayerModelObject::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
bool hadTransform = hasTransform();
RenderObject::styleDidChange(diff, oldStyle);
updateFromStyle();
LayerType type = layerTypeRequired();
if (type != NoLayer) {
if (!layer() && layerCreationAllowedForSubtree()) {
if (s_wasFloating && isFloating())
setChildNeedsLayout();
createLayer(type);
if (parent() && !needsLayout() && containingBlock()) {
// FIXME: This invalidation is overly broad. We should update to
// do the correct invalidation at RenderStyle::diff time. crbug.com/349061
if (RuntimeEnabledFeatures::repaintAfterLayoutEnabled())
layer()->renderer()->setShouldDoFullPaintInvalidationAfterLayout(true);
else
layer()->repainter().setRepaintStatus(NeedsFullRepaint);
// Hit in animations/interpolation/perspective-interpolation.html
// FIXME: I suspect we can remove this assert disabler now.
DisableCompositingQueryAsserts disabler;
layer()->updateLayerPositionRecursive();
}
}
} else if (layer() && layer()->parent()) {
setHasTransform(false); // Either a transform wasn't specified or the object doesn't support transforms, so just null out the bit.
setHasReflection(false);
layer()->removeOnlyThisLayer(); // calls destroyLayer() which clears m_layer
if (s_wasFloating && isFloating())
setChildNeedsLayout();
if (hadTransform)
setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation();
}
if (layer()) {
// FIXME: Ideally we shouldn't need this setter but we can't easily infer an overflow-only layer
// from the style.
layer()->setLayerType(type);
layer()->styleChanged(diff, oldStyle);
}
if (FrameView *frameView = view()->frameView()) {
bool newStyleIsViewportConstained = style()->hasViewportConstrainedPosition();
bool oldStyleIsViewportConstrained = oldStyle && oldStyle->hasViewportConstrainedPosition();
if (newStyleIsViewportConstained != oldStyleIsViewportConstrained) {
if (newStyleIsViewportConstained && layer())
frameView->addViewportConstrainedObject(this);
else
frameView->removeViewportConstrainedObject(this);
}
}
}
void RenderLayerModelObject::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
bool hadTransform = hasTransform();
bool hadLayer = hasLayer();
bool layerWasSelfPainting = hadLayer && layer()->isSelfPaintingLayer();
RenderObject::styleDidChange(diff, oldStyle);
updateFromStyle();
LayerType type = layerTypeRequired();
if (type != NoLayer) {
if (!layer() && layerCreationAllowedForSubtree()) {
if (s_wasFloating && isFloating())
setChildNeedsLayout();
createLayer(type);
if (parent() && !needsLayout()) {
// FIXME: We should call a specialized version of this function.
layer()->updateLayerPositionsAfterLayout();
}
}
} else if (layer() && layer()->parent()) {
setHasTransform(false); // Either a transform wasn't specified or the object doesn't support transforms, so just null out the bit.
setHasReflection(false);
layer()->removeOnlyThisLayer(); // calls destroyLayer() which clears m_layer
if (s_wasFloating && isFloating())
setChildNeedsLayout();
if (hadTransform)
setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation();
}
if (layer()) {
// FIXME: Ideally we shouldn't need this setter but we can't easily infer an overflow-only layer
// from the style.
layer()->setLayerType(type);
layer()->styleChanged(diff, oldStyle);
if (hadLayer && layer()->isSelfPaintingLayer() != layerWasSelfPainting)
setChildNeedsLayout();
}
if (FrameView *frameView = view()->frameView()) {
bool newStyleIsViewportConstained = style()->hasViewportConstrainedPosition();
bool oldStyleIsViewportConstrained = oldStyle && oldStyle->hasViewportConstrainedPosition();
if (newStyleIsViewportConstained != oldStyleIsViewportConstrained) {
if (newStyleIsViewportConstained && layer())
frameView->addViewportConstrainedObject(this);
else
frameView->removeViewportConstrainedObject(this);
}
}
}
void RenderLayerModelObject::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
bool hadTransform = hasTransform();
bool hadLayer = hasLayer();
bool layerWasSelfPainting = hadLayer && layer()->isSelfPaintingLayer();
RenderObject::styleDidChange(diff, oldStyle);
updateFromStyle();
if (requiresLayer()) {
if (!layer() && layerCreationAllowedForSubtree()) {
if (s_wasFloating && isFloating())
setChildNeedsLayout();
createLayer();
if (parent() && !needsLayout() && containingBlock()) {
layer()->repainter().setRepaintStatus(NeedsFullRepaint);
// There is only one layer to update, it is not worth using |cachedOffset| since
// we are not sure the value will be used.
layer()->updateLayerPositions(0);
}
}
} else if (layer() && layer()->parent()) {
setHasTransform(false); // Either a transform wasn't specified or the object doesn't support transforms, so just null out the bit.
setHasReflection(false);
layer()->removeOnlyThisLayer(); // calls destroyLayer() which clears m_layer
if (s_wasFloating && isFloating())
setChildNeedsLayout();
if (hadTransform)
setNeedsLayoutAndPrefWidthsRecalc();
}
if (layer()) {
layer()->styleChanged(diff, oldStyle);
if (hadLayer && layer()->isSelfPaintingLayer() != layerWasSelfPainting)
setChildNeedsLayout();
}
if (FrameView *frameView = view()->frameView()) {
bool newStyleIsViewportConstained = style()->hasViewportConstrainedPosition();
bool oldStyleIsViewportConstrained = oldStyle && oldStyle->hasViewportConstrainedPosition();
if (newStyleIsViewportConstained != oldStyleIsViewportConstrained) {
if (newStyleIsViewportConstained && layer())
frameView->addViewportConstrainedObject(this);
else
frameView->removeViewportConstrainedObject(this);
}
}
}
void RenderView::layout()
{
if (printing())
m_minPrefWidth = m_maxPrefWidth = width();
// Use calcWidth/Height to get the new width/height, since this will take the full page zoom factor into account.
bool relayoutChildren = !printing() && (!m_frameView || width() != viewWidth() || height() != viewHeight());
if (relayoutChildren) {
setChildNeedsLayout(true, false);
for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {
if (child->style()->height().isPercent() || child->style()->minHeight().isPercent() || child->style()->maxHeight().isPercent())
child->setChildNeedsLayout(true, false);
}
}
ASSERT(!m_layoutState);
LayoutState state;
// FIXME: May be better to push a clip and avoid issuing offscreen repaints.
state.m_clipped = false;
m_layoutState = &state;
if (needsLayout())
RenderBlock::layout();
// Reset overflow and then replace it with docWidth and docHeight.
m_overflow.clear();
addLayoutOverflow(IntRect(0, 0, docWidth(), docHeight()));
ASSERT(layoutDelta() == IntSize());
ASSERT(m_layoutStateDisableCount == 0);
ASSERT(m_layoutState == &state);
m_layoutState = 0;
setNeedsLayout(false);
}
void RenderMedia::layout()
{
IntSize oldSize = contentBoxRect().size();
RenderImage::layout();
RenderBox* controlsRenderer = m_controls->renderBox();
if (!controlsRenderer)
return;
IntSize newSize = contentBoxRect().size();
if (newSize == oldSize && !controlsRenderer->needsLayout())
return;
// When calling layout() on a child node, a parent must either push a LayoutStateMaintainter, or
// call view()->disableLayoutState(). Since using a LayoutStateMaintainer is slightly more efficient,
// and this method will be called many times per second during playback, use a LayoutStateMaintainer:
LayoutStateMaintainer statePusher(view(), this, IntSize(x(), y()), hasTransform() || hasReflection() || style()->isFlippedBlocksWritingMode());
controlsRenderer->setLocation(borderLeft() + paddingLeft(), borderTop() + paddingTop());
controlsRenderer->style()->setHeight(Length(newSize.height(), Fixed));
controlsRenderer->style()->setWidth(Length(newSize.width(), Fixed));
controlsRenderer->setNeedsLayout(true, false);
controlsRenderer->layout();
setChildNeedsLayout(false);
statePusher.pop();
}
void RenderSVGContainer::insertChildNode(RenderObject* child, RenderObject* beforeChild, bool)
{
if (!beforeChild) {
appendChildNode(child);
return;
}
ASSERT(!child->parent());
ASSERT(beforeChild->parent() == this);
ASSERT(child->element()->isSVGElement());
if (beforeChild == m_firstChild)
m_firstChild = child;
RenderObject* prev = beforeChild->previousSibling();
child->setNextSibling(beforeChild);
beforeChild->setPreviousSibling(child);
if (prev)
prev->setNextSibling(child);
child->setPreviousSibling(prev);
child->setParent(this);
child->setNeedsLayoutAndPrefWidthsRecalc();
if (!normalChildNeedsLayout())
setChildNeedsLayout(true); // We may supply the static position for an absolute positioned child.
if (AXObjectCache::accessibilityEnabled())
document()->axObjectCache()->childrenChanged(this);
}
void RenderView::layout()
{
StackStats::LayoutCheckPoint layoutCheckPoint;
if (!document().paginated())
setPageLogicalHeight(0);
if (shouldUsePrintingLayout())
m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = logicalWidth();
// Use calcWidth/Height to get the new width/height, since this will take the full page zoom factor into account.
bool relayoutChildren = !shouldUsePrintingLayout() && (width() != viewWidth() || height() != viewHeight());
if (relayoutChildren) {
setChildNeedsLayout(MarkOnlyThis);
for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {
if (!child->isBox())
continue;
RenderBox& box = toRenderBox(*child);
if (box.hasRelativeLogicalHeight()
|| box.hasViewportPercentageLogicalHeight()
|| box.style()->logicalHeight().isPercent()
|| box.style()->logicalMinHeight().isPercent()
|| box.style()->logicalMaxHeight().isPercent()
|| box.style()->logicalHeight().isViewportPercentage()
|| box.style()->logicalMinHeight().isViewportPercentage()
|| box.style()->logicalMaxHeight().isViewportPercentage()
#if ENABLE(SVG)
|| box.isSVGRoot()
#endif
)
box.setChildNeedsLayout(MarkOnlyThis);
}
}
ASSERT(!m_layoutState);
if (!needsLayout())
return;
m_layoutState = std::make_unique<LayoutState>();
bool isSeamlessAncestorInFlowThread = initializeLayoutState(*m_layoutState);
m_pageLogicalHeightChanged = false;
if (checkTwoPassLayoutForAutoHeightRegions())
layoutContentInAutoLogicalHeightRegions(*m_layoutState);
else
layoutContent(*m_layoutState);
layoutContentToComputeOverflowInRegions(*m_layoutState);
#ifndef NDEBUG
checkLayoutState(*m_layoutState);
#endif
m_layoutState = nullptr;
clearNeedsLayout();
if (isSeamlessAncestorInFlowThread)
flowThreadController().setCurrentRenderFlowThread(0);
}
void RenderView::layout()
{
StackStats::LayoutCheckPoint layoutCheckPoint;
if (!document()->paginated())
setPageLogicalHeight(0);
if (shouldUsePrintingLayout())
m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = logicalWidth();
// Use calcWidth/Height to get the new width/height, since this will take the full page zoom factor into account.
bool relayoutChildren = !shouldUsePrintingLayout() && (!m_frameView || width() != viewWidth() || height() != viewHeight());
if (relayoutChildren) {
setChildNeedsLayout(true, MarkOnlyThis);
for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {
if ((child->isBox() && toRenderBox(child)->hasRelativeLogicalHeight())
|| child->style()->logicalHeight().isPercent()
|| child->style()->logicalMinHeight().isPercent()
|| child->style()->logicalMaxHeight().isPercent())
child->setChildNeedsLayout(true, MarkOnlyThis);
}
}
ASSERT(!m_layoutState);
if (!needsLayout())
return;
LayoutState state;
// FIXME: May be better to push a clip and avoid issuing offscreen repaints.
state.m_clipped = false;
state.m_pageLogicalHeight = m_pageLogicalHeight;
state.m_pageLogicalHeightChanged = m_pageLogicalHeightChanged;
state.m_isPaginated = state.m_pageLogicalHeight;
m_pageLogicalHeightChanged = false;
m_layoutState = &state;
m_layoutPhase = RenderViewNormalLayout;
bool needsTwoPassLayoutForAutoLogicalHeightRegions = hasRenderNamedFlowThreads()
&& flowThreadController()->hasAutoLogicalHeightRegions()
&& flowThreadController()->hasRenderNamedFlowThreadsNeedingLayout();
if (needsTwoPassLayoutForAutoLogicalHeightRegions)
flowThreadController()->resetRegionsOverrideLogicalContentHeight();
layoutContent(state);
if (needsTwoPassLayoutForAutoLogicalHeightRegions) {
m_layoutPhase = ConstrainedFlowThreadsLayoutInAutoLogicalHeightRegions;
flowThreadController()->markAutoLogicalHeightRegionsForLayout();
layoutContent(state);
}
#ifndef NDEBUG
checkLayoutState(state);
#endif
m_layoutState = 0;
setNeedsLayout(false);
}
void RenderContainer::insertChildNode(RenderObject* child, RenderObject* beforeChild, bool fullInsert)
{
if (!beforeChild) {
appendChildNode(child);
return;
}
ASSERT(!child->parent());
while (beforeChild->parent() != this && beforeChild->parent()->isAnonymousBlock())
beforeChild = beforeChild->parent();
ASSERT(beforeChild->parent() == this);
ASSERT(!isBlockFlow() || (!child->isTableSection() && !child->isTableRow() && !child->isTableCell()));
if (beforeChild == m_firstChild)
m_firstChild = child;
RenderObject* prev = beforeChild->previousSibling();
child->setNextSibling(beforeChild);
beforeChild->setPreviousSibling(child);
if(prev) prev->setNextSibling(child);
child->setPreviousSibling(prev);
child->setParent(this);
if (fullInsert) {
// Keep our layer hierarchy updated. Optimize for the common case where we don't have any children
// and don't have a layer attached to ourselves.
RenderLayer* layer = 0;
if (child->firstChild() || child->hasLayer()) {
layer = enclosingLayer();
child->addLayers(layer, child);
}
// if the new child is visible but this object was not, tell the layer it has some visible content
// that needs to be drawn and layer visibility optimization can't be used
if (style()->visibility() != VISIBLE && child->style()->visibility() == VISIBLE && !child->hasLayer()) {
if (!layer)
layer = enclosingLayer();
if (layer)
layer->setHasVisibleContent(true);
}
if (!child->isFloating() && childrenInline())
dirtyLinesFromChangedChild(child);
}
child->setNeedsLayoutAndPrefWidthsRecalc();
if (!normalChildNeedsLayout())
setChildNeedsLayout(true); // We may supply the static position for an absolute positioned child.
if (AXObjectCache::accessibilityEnabled())
document()->axObjectCache()->childrenChanged(this);
}
void RenderView::layout()
{
if (!document()->paginated())
setPageHeight(0);
m_absoluteOverflow.clear();
if (printing())
m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = width();
// Use calcWidth/Height to get the new width/height, since this will take the full page zoom factor into account.
bool relayoutChildren = !printing() && (!m_frameView || width() != viewWidth() || height() != viewHeight());
if (relayoutChildren) {
setChildNeedsLayout(true, false);
for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {
if (child->style()->logicalHeight().isPercent() || child->style()->logicalMinHeight().isPercent() || child->style()->logicalMaxHeight().isPercent())
child->setChildNeedsLayout(true, false);
}
}
ASSERT(!m_layoutState);
LayoutState state;
// FIXME: May be better to push a clip and avoid issuing offscreen repaints.
state.m_clipped = false;
state.m_pageHeight = m_pageHeight;
state.m_pageHeightChanged = m_pageHeightChanged;
m_pageHeightChanged = false;
m_layoutState = &state;
if (needsLayout())
RenderBlock::layout();
#if ENABLE(VIEWPORT_REFLOW)
calcReflowWidth();
#endif
// Reset overflow and then replace it with docWidth and docHeight.
m_overflow.clear();
int leftOverflow = docLeft();
addLayoutOverflow(IntRect(leftOverflow, 0, docWidth(leftOverflow), docHeight()));
ASSERT(layoutDelta() == IntSize());
ASSERT(m_layoutStateDisableCount == 0);
ASSERT(m_layoutState == &state);
m_layoutState = 0;
setNeedsLayout(false);
}
void RenderContainer::appendChildNode(RenderObject* newChild, bool fullAppend)
{
ASSERT(newChild->parent() == 0);
ASSERT(!isBlockFlow() || (!newChild->isTableSection() && !newChild->isTableRow() && !newChild->isTableCell()));
newChild->setParent(this);
RenderObject* lChild = m_lastChild;
if (lChild) {
newChild->setPreviousSibling(lChild);
lChild->setNextSibling(newChild);
} else
m_firstChild = newChild;
m_lastChild = newChild;
if (fullAppend) {
// Keep our layer hierarchy updated. Optimize for the common case where we don't have any children
// and don't have a layer attached to ourselves.
RenderLayer* layer = 0;
if (newChild->firstChild() || newChild->hasLayer()) {
layer = enclosingLayer();
newChild->addLayers(layer, newChild);
}
// if the new child is visible but this object was not, tell the layer it has some visible content
// that needs to be drawn and layer visibility optimization can't be used
if (style()->visibility() != VISIBLE && newChild->style()->visibility() == VISIBLE && !newChild->hasLayer()) {
if (!layer)
layer = enclosingLayer();
if (layer)
layer->setHasVisibleContent(true);
}
if (!newChild->isFloatingOrPositioned() && childrenInline())
dirtyLinesFromChangedChild(newChild);
}
newChild->setNeedsLayoutAndPrefWidthsRecalc(); // Goes up the containing block hierarchy.
if (!normalChildNeedsLayout())
setChildNeedsLayout(true); // We may supply the static position for an absolute positioned child.
if (AXObjectCache::accessibilityEnabled())
document()->axObjectCache()->childrenChanged(this);
}
void RenderView::layout()
{
layoutCounter.startCounting();
if (printing())
m_minPrefWidth = m_maxPrefWidth = m_width;
// Use calcWidth/Height to get the new width/height, since this will take the full page zoom factor into account.
bool relayoutChildren = !printing() && (!m_frameView || m_width != viewWidth() || m_height != viewHeight());
if (relayoutChildren) {
setChildNeedsLayout(true, false);
for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {
if (child->style()->height().isPercent() || child->style()->minHeight().isPercent() || child->style()->maxHeight().isPercent())
child->setChildNeedsLayout(true, false);
}
}
ASSERT(!m_layoutState);
LayoutState state;
IntRect viewRectangle = viewRect();
// An empty rect is not valid viewRect.
state.m_clipped = !viewRectangle.isEmpty();
if (state.m_clipped) {
state.m_clipRect = IntRect(IntPoint(0, 0), viewRectangle.size());
state.m_offset = IntSize(viewRectangle.x(), viewRectangle.y());
}
m_layoutState = &state;
if (needsLayout())
RenderBlock::layout();
// Ensure that docWidth() >= width() and docHeight() >= height().
setOverflowWidth(m_width);
setOverflowHeight(m_height);
setOverflowWidth(docWidth());
setOverflowHeight(docHeight());
ASSERT(m_layoutStateDisableCount == 0);
ASSERT(m_layoutState == &state);
m_layoutState = 0;
setNeedsLayout(false);
layoutCounter.stopCounting();
}
void RenderView::layout()
{
if (!document()->paginated())
setPageLogicalHeight(0);
if (shouldUsePrintingLayout())
m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = logicalWidth();
// Use calcWidth/Height to get the new width/height, since this will take the full page zoom factor into account.
bool relayoutChildren = !shouldUsePrintingLayout() && (!m_frameView || width() != viewWidth() || height() != viewHeight());
if (relayoutChildren) {
setChildNeedsLayout(true, MarkOnlyThis);
for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {
if ((child->isBox() && toRenderBox(child)->hasRelativeLogicalHeight())
|| child->style()->logicalHeight().isPercent()
|| child->style()->logicalMinHeight().isPercent()
|| child->style()->logicalMaxHeight().isPercent())
child->setChildNeedsLayout(true, MarkOnlyThis);
}
}
ASSERT(!m_layoutState);
LayoutState state;
// FIXME: May be better to push a clip and avoid issuing offscreen repaints.
state.m_clipped = false;
state.m_pageLogicalHeight = m_pageLogicalHeight;
state.m_pageLogicalHeightChanged = m_pageLogicalHeightChanged;
state.m_isPaginated = state.m_pageLogicalHeight;
m_pageLogicalHeightChanged = false;
m_layoutState = &state;
if (needsLayout()) {
RenderBlock::layout();
if (hasRenderNamedFlowThreads())
flowThreadController()->layoutRenderNamedFlowThreads();
}
ASSERT(layoutDelta() == LayoutSize());
ASSERT(m_layoutStateDisableCount == 0);
ASSERT(m_layoutState == &state);
m_layoutState = 0;
setNeedsLayout(false);
}
bool RenderMultiColumnBlock::relayoutForPagination(bool, LayoutUnit, LayoutStateMaintainer& statePusher)
{
if (m_inBalancingPass || !requiresBalancing())
return false;
m_inBalancingPass = true; // Prevent re-entering this method (and recursion into layout).
bool needsRelayout;
bool neededRelayout = false;
bool firstPass = true;
do {
// Column heights may change here because of balancing. We may have to do multiple layout
// passes, depending on how the contents is fitted to the changed column heights. In most
// cases, laying out again twice or even just once will suffice. Sometimes we need more
// passes than that, though, but the number of retries should not exceed the number of
// columns, unless we have a bug.
needsRelayout = false;
for (RenderBox* childBox = firstChildBox(); childBox; childBox = childBox->nextSiblingBox())
if (childBox != m_flowThread && childBox->isRenderMultiColumnSet()) {
RenderMultiColumnSet* multicolSet = toRenderMultiColumnSet(childBox);
if (multicolSet->calculateBalancedHeight(firstPass)) {
multicolSet->setChildNeedsLayout(MarkOnlyThis);
needsRelayout = true;
}
}
if (needsRelayout) {
// Layout again. Column balancing resulted in a new height.
neededRelayout = true;
m_flowThread->setChildNeedsLayout(MarkOnlyThis);
setChildNeedsLayout(MarkOnlyThis);
if (firstPass)
statePusher.pop();
layoutBlock(false);
}
firstPass = false;
} while (needsRelayout);
m_inBalancingPass = false;
return neededRelayout;
}
void RenderMultiColumnSet::resetColumnHeight()
{
// Nuke previously stored minimum column height. Contents may have changed for all we know.
m_minimumColumnHeight = 0;
m_maxColumnHeight = calculateMaxColumnHeight();
LayoutUnit oldColumnHeight = pageLogicalHeight();
if (multiColumnFlowThread()->requiresBalancing())
m_columnHeight = 0;
else
setAndConstrainColumnHeight(heightAdjustedForSetOffset(multiColumnFlowThread()->columnHeightAvailable()));
if (pageLogicalHeight() != oldColumnHeight)
setChildNeedsLayout(MarkOnlyThis);
// Content runs are only needed in the initial layout pass, in order to find an initial column
// height, and should have been deleted afterwards. We're about to rebuild the content runs, so
// the list needs to be empty.
ASSERT(m_contentRuns.isEmpty());
}
void RenderMedia::layout()
{
StackStats::LayoutCheckPoint layoutCheckPoint;
LayoutSize oldSize = contentBoxRect().size();
RenderImage::layout();
RenderBox* controlsRenderer = toRenderBox(m_children.firstChild());
if (!controlsRenderer)
return;
bool controlsNeedLayout = controlsRenderer->needsLayout();
// If the region chain has changed we also need to relayout the controls to update the region box info.
// FIXME: We can do better once we compute region box info for RenderReplaced, not only for RenderBlock.
const RenderFlowThread* flowThread = flowThreadContainingBlock();
if (flowThread && !controlsNeedLayout) {
if (flowThread->pageLogicalSizeChanged())
controlsNeedLayout = true;
}
LayoutSize newSize = contentBoxRect().size();
if (newSize == oldSize && !controlsNeedLayout)
return;
// When calling layout() on a child node, a parent must either push a LayoutStateMaintainter, or
// instantiate LayoutStateDisabler. Since using a LayoutStateMaintainer is slightly more efficient,
// and this method will be called many times per second during playback, use a LayoutStateMaintainer:
LayoutStateMaintainer statePusher(view(), this, locationOffset(), hasTransform() || hasReflection() || style()->isFlippedBlocksWritingMode());
controlsRenderer->setLocation(LayoutPoint(borderLeft(), borderTop()) + LayoutSize(paddingLeft(), paddingTop()));
controlsRenderer->style()->setHeight(Length(newSize.height(), Fixed));
controlsRenderer->style()->setWidth(Length(newSize.width(), Fixed));
controlsRenderer->setNeedsLayout(true, MarkOnlyThis);
controlsRenderer->layout();
setChildNeedsLayout(false);
statePusher.pop();
}
void RenderSVGContainer::appendChildNode(RenderObject* newChild, bool)
{
ASSERT(!newChild->parent());
ASSERT(newChild->element()->isSVGElement());
newChild->setParent(this);
RenderObject* lChild = m_lastChild;
if (lChild) {
newChild->setPreviousSibling(lChild);
lChild->setNextSibling(newChild);
} else
m_firstChild = newChild;
m_lastChild = newChild;
newChild->setNeedsLayoutAndPrefWidthsRecalc(); // Goes up the containing block hierarchy.
if (!normalChildNeedsLayout())
setChildNeedsLayout(true); // We may supply the static position for an absolute positioned child.
if (AXObjectCache::accessibilityEnabled())
document()->axObjectCache()->childrenChanged(this);
}
bool LayoutMultiColumnFlowThread::recalculateColumnHeights()
{
// All column sets that needed layout have now been laid out, so we can finally validate them.
validateColumnSets();
if (!m_needsColumnHeightsRecalculation)
return false;
// Column heights may change here because of balancing. We may have to do multiple layout
// passes, depending on how the contents is fitted to the changed column heights. In most
// cases, laying out again twice or even just once will suffice. Sometimes we need more
// passes than that, though, but the number of retries should not exceed the number of
// columns, unless we have a bug.
bool needsRelayout = false;
for (LayoutMultiColumnSet* multicolSet = firstMultiColumnSet(); multicolSet; multicolSet = multicolSet->nextSiblingMultiColumnSet())
needsRelayout |= multicolSet->recalculateColumnHeight();
if (needsRelayout)
setChildNeedsLayout(MarkOnlyThis);
m_inBalancingPass = needsRelayout;
return needsRelayout;
}
void RenderView::layout()
{
if (m_printingMode)
m_minWidth = m_width;
// FIXME: This is all just a terrible workaround for bugs in layout when the view height changes.
// Find a better way to detect view height changes. We're guessing that if we don't need layout that the reason
// we were called is because of a FrameView bounds change.
if (!needsLayout()) {
setChildNeedsLayout(true, false);
setMinMaxKnown(false);
for (RenderObject *c = firstChild(); c; c = c->nextSibling())
c->setChildNeedsLayout(true, false);
}
if (recalcMinMax())
recalcMinMaxWidths();
RenderBlock::layout();
int docw = docWidth();
int doch = docHeight();
if (!m_printingMode) {
setWidth(m_frameView->visibleWidth());
setHeight(m_frameView->visibleHeight());
}
// ### we could maybe do the call below better and only pass true if the docsize changed.
layoutPositionedObjects( true );
layer()->setHeight(max(doch, m_height));
layer()->setWidth(max(docw, m_width));
setNeedsLayout(false);
}
void RenderLayerModelObject::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderElement::styleDidChange(diff, oldStyle);
updateFromStyle();
if (requiresLayer()) {
if (!layer() && layerCreationAllowedForSubtree()) {
if (s_wasFloating && isFloating())
setChildNeedsLayout();
createLayer();
if (parent() && !needsLayout() && containingBlock()) {
layer()->setRepaintStatus(NeedsFullRepaint);
// There is only one layer to update, it is not worth using |cachedOffset| since
// we are not sure the value will be used.
layer()->updateLayerPositions(0);
}
}
} else if (layer() && layer()->parent()) {
#if ENABLE(CSS_COMPOSITING)
if (oldStyle->hasBlendMode())
layer()->parent()->dirtyAncestorChainHasBlendingDescendants();
#endif
setHasTransformRelatedProperty(false); // All transform-related propeties force layers, so we know we don't have one or the object doesn't support them.
setHasReflection(false);
// Repaint the about to be destroyed self-painting layer when style change also triggers repaint.
if (layer()->isSelfPaintingLayer() && layer()->repaintStatus() == NeedsFullRepaint)
repaintUsingContainer(containerForRepaint(), layer()->repaintRect());
layer()->removeOnlyThisLayer(); // calls destroyLayer() which clears m_layer
if (s_wasFloating && isFloating())
setChildNeedsLayout();
if (s_hadTransform)
setNeedsLayoutAndPrefWidthsRecalc();
}
if (layer()) {
layer()->styleChanged(diff, oldStyle);
if (s_hadLayer && layer()->isSelfPaintingLayer() != s_layerWasSelfPainting)
setChildNeedsLayout();
}
bool newStyleIsViewportConstrained = style().hasViewportConstrainedPosition();
bool oldStyleIsViewportConstrained = oldStyle && oldStyle->hasViewportConstrainedPosition();
if (newStyleIsViewportConstrained != oldStyleIsViewportConstrained) {
if (newStyleIsViewportConstrained && layer())
view().frameView().addViewportConstrainedObject(this);
else
view().frameView().removeViewportConstrainedObject(this);
}
#if ENABLE(CSS_SCROLL_SNAP)
const RenderStyle& newStyle = style();
if (oldStyle && scrollSnapContainerRequiresUpdateForStyleUpdate(*oldStyle, newStyle)) {
if (RenderLayer* renderLayer = layer()) {
renderLayer->updateSnapOffsets();
renderLayer->updateScrollSnapState();
} else if (isBody() || isDocumentElementRenderer()) {
FrameView& frameView = view().frameView();
frameView.updateSnapOffsets();
frameView.updateScrollSnapState();
frameView.updateScrollingCoordinatorScrollSnapProperties();
}
}
if (oldStyle && oldStyle->scrollSnapCoordinates() != newStyle.scrollSnapCoordinates()) {
const RenderBox* scrollSnapBox = enclosingBox().findEnclosingScrollableContainer();
if (scrollSnapBox && scrollSnapBox->layer()) {
const RenderStyle& style = scrollSnapBox->style();
if (style.scrollSnapType() != ScrollSnapType::None) {
scrollSnapBox->layer()->updateSnapOffsets();
scrollSnapBox->layer()->updateScrollSnapState();
if (scrollSnapBox->isBody() || scrollSnapBox->isDocumentElementRenderer())
scrollSnapBox->view().frameView().updateScrollingCoordinatorScrollSnapProperties();
}
}
}
#endif
}