void RenderDialog::layout()
{
LayoutRepainter repainter(*this, true);
LayoutStateMaintainer statePusher(view(), this, locationOffset(), hasTransform() || hasReflection() || style()->isFlippedBlocksWritingMode());
RenderBlock::layout();
RenderStyle* styleToUse = style();
if (styleToUse->position() != AbsolutePosition || !styleToUse->top().isAuto() || !styleToUse->bottom().isAuto()) {
statePusher.pop();
return;
}
// Adjust the dialog's position to be centered in or at the top of the viewport.
// FIXME: Figure out what to do in vertical writing mode.
FrameView* frameView = document()->view();
int scrollTop = frameView->scrollOffset().height();
FloatPoint absolutePoint(0, scrollTop);
int visibleHeight = frameView->visibleContentRect(true).height();
if (height() < visibleHeight)
absolutePoint.move(0, (visibleHeight - height()) / 2);
FloatPoint localPoint = containingBlock()->absoluteToLocal(absolutePoint);
LayoutUnit localTop = LayoutSize(localPoint.x(), localPoint.y()).height();
setY(localTop);
statePusher.pop();
// FIXME: Since there is always a layer here, repainter shouldn't be necessary. But without it, the dialog is sometimes not painted (see bug 90670).
repainter.repaintAfterLayout();
}
inline void RenderBlockFlow::layoutBlockFlow(bool relayoutChildren, SubtreeLayoutScope& layoutScope)
{
LayoutUnit oldLeft = logicalLeft();
bool logicalWidthChanged = updateLogicalWidthAndColumnWidth();
relayoutChildren |= logicalWidthChanged;
LayoutState state(*this, locationOffset(), logicalWidthChanged);
LayoutUnit beforeEdge = borderBefore() + paddingBefore();
LayoutUnit afterEdge = borderAfter() + paddingAfter();
LayoutUnit previousHeight = logicalHeight();
setLogicalHeight(beforeEdge);
m_paintInvalidationLogicalTop = 0;
m_paintInvalidationLogicalBottom = 0;
if (!firstChild() && !isAnonymousBlock())
setChildrenInline(true);
if (childrenInline())
layoutInlineChildren(relayoutChildren, m_paintInvalidationLogicalTop, m_paintInvalidationLogicalBottom, afterEdge);
else
layoutBlockChildren(relayoutChildren, layoutScope, beforeEdge, afterEdge);
LayoutUnit oldClientAfterEdge = clientLogicalBottom();
updateLogicalHeight();
if (previousHeight != logicalHeight())
relayoutChildren = true;
layoutPositionedObjects(relayoutChildren || isDocumentElement(), oldLeft != logicalLeft() ? ForcedLayoutAfterContainingBlockMoved : DefaultLayout);
// Add overflow from children (unless we're multi-column, since in that case all our child overflow is clipped anyway).
computeOverflow(oldClientAfterEdge);
}
void RenderVTTCue::layout()
{
StackStats::LayoutCheckPoint layoutCheckPoint;
RenderBlockFlow::layout();
#if ENABLE(WEBVTT_REGIONS)
// If WebVTT Regions are used, the regular WebVTT layout algorithm is no
// longer necessary, since cues having the region parameter set do not have
// any positioning parameters. Also, in this case, the regions themselves
// have positioning information.
if (!m_cue->regionId().isEmpty())
return;
#endif
LayoutStateMaintainer statePusher(view(), *this, locationOffset(), hasTransform() || hasReflection() || style().isFlippedBlocksWritingMode());
if (m_cue->cueType()== TextTrackCue::WebVTT) {
if (toVTTCue(m_cue)->snapToLines())
repositionCueSnapToLinesSet();
else
repositionCueSnapToLinesNotSet();
} else
repositionGenericCue();
statePusher.pop();
}
void RenderGrid::layoutBlock(bool relayoutChildren, LayoutUnit)
{
ASSERT(needsLayout());
if (!relayoutChildren && simplifiedLayout())
return;
// FIXME: Much of this method is boiler plate that matches RenderBox::layoutBlock and Render*FlexibleBox::layoutBlock.
// It would be nice to refactor some of the duplicate code.
LayoutRepainter repainter(*this, checkForRepaintDuringLayout());
LayoutStateMaintainer statePusher(view(), this, locationOffset(), hasTransform() || hasReflection() || style()->isFlippedBlocksWritingMode());
if (inRenderFlowThread()) {
// Regions changing widths can force us to relayout our children.
if (logicalWidthChangedInRegions())
relayoutChildren = true;
}
computeInitialRegionRangeForBlock();
LayoutSize previousSize = size();
setLogicalHeight(0);
computeLogicalWidth();
m_overflow.clear();
layoutGridItems();
LayoutUnit oldClientAfterEdge = clientLogicalBottom();
computeLogicalHeight();
if (size() != previousSize)
relayoutChildren = true;
layoutPositionedObjects(relayoutChildren || isRoot());
computeRegionRangeForBlock();
computeOverflow(oldClientAfterEdge);
statePusher.pop();
updateLayerTransform();
// Update our scroll information if we're overflow:auto/scroll/hidden now that we know if
// we overflow or not.
if (hasOverflowClip())
layer()->updateScrollInfoAfterLayout();
repainter.repaintAfterLayout();
setNeedsLayout(false);
}
void LayoutVTTCue::layout() {
LayoutBlockFlow::layout();
DCHECK(firstChild());
LayoutState state(*this, locationOffset());
// http://dev.w3.org/html5/webvtt/#dfn-apply-webvtt-cue-settings - step 13.
if (!std::isnan(m_snapToLinesPosition))
SnapToLinesLayouter(*this, computeControlsRect()).layout();
else
repositionCueSnapToLinesNotSet();
}
void RenderTextTrackCue::layout()
{
StackStats::LayoutCheckPoint layoutCheckPoint;
RenderBlock::layout();
LayoutStateMaintainer statePusher(view(), this, locationOffset(), hasTransform() || hasReflection() || style()->isFlippedBlocksWritingMode());
if (m_cue->cueType()== TextTrackCue::WebVTT) {
if (m_cue->snapToLines())
repositionCueSnapToLinesSet();
else
repositionCueSnapToLinesNotSet();
} else
repositionGenericCue();
statePusher.pop();
}
void RenderVTTCue::layout()
{
LayoutRectRecorder recorder(*this);
RenderBlockFlow::layout();
// If WebVTT Regions are used, the regular WebVTT layout algorithm is no
// longer necessary, since cues having the region parameter set do not have
// any positioning parameters. Also, in this case, the regions themselves
// have positioning information.
if (!m_cue->regionId().isEmpty())
return;
LayoutStateMaintainer statePusher(view(), this, locationOffset(), hasTransform() || hasReflection() || style()->isFlippedBlocksWritingMode());
if (m_cue->snapToLines())
repositionCueSnapToLinesSet();
else
repositionCueSnapToLinesNotSet();
statePusher.pop();
}
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 LayoutVTTCue::layout()
{
LayoutBlockFlow::layout();
// If WebVTT Regions are used, the regular WebVTT layout algorithm is no
// longer necessary, since cues having the region parameter set do not have
// any positioning parameters. Also, in this case, the regions themselves
// have positioning information.
if (!m_cue->regionId().isEmpty())
return;
ASSERT(firstChild());
LayoutState state(*this, locationOffset());
// Determine the area covered by the media controls, if any. If the controls
// are present, they are the next sibling of the text track container, which
// is our parent. (LayoutMedia ensures that the media controls are laid out
// before text tracks, so that the layout is up-to-date here.)
ASSERT(parent()->node()->isTextTrackContainer());
IntRect controlsRect;
if (LayoutObject* parentSibling = parent()->nextSibling()) {
// Only a part of the media controls is used for overlap avoidance.
MediaControls* controls = toMediaControls(parentSibling->node());
if (LayoutObject* controlsLayout = controls->layoutObjectForTextTrackLayout())
controlsRect = controlsLayout->absoluteBoundingBoxRect();
}
// http://dev.w3.org/html5/webvtt/#dfn-apply-webvtt-cue-settings - step 13.
if (m_cue->snapToLines()) {
SnapToLinesLayouter(*this, controlsRect, m_cue->calculateComputedLinePosition()).layout();
adjustForTopAndBottomMarginBorderAndPadding();
} else {
repositionCueSnapToLinesNotSet();
}
}
LayoutSize RenderSVGRoot::parentOriginToBorderBox() const
{
return locationOffset();
}
void LayoutSVGText::layout()
{
ASSERT(needsLayout());
LayoutAnalyzer::Scope analyzer(*this);
subtreeStyleDidChange();
bool updateCachedBoundariesInParents = false;
if (m_needsTransformUpdate) {
m_localTransform = toSVGTextElement(node())->calculateAnimatedLocalTransform();
m_needsTransformUpdate = false;
updateCachedBoundariesInParents = true;
}
if (!everHadLayout()) {
// When laying out initially, collect all layout attributes, build the character data map,
// and propogate resulting SVGLayoutAttributes to all LayoutSVGInlineText children in the subtree.
ASSERT(m_layoutAttributes.isEmpty());
collectLayoutAttributes(this, m_layoutAttributes);
updateFontInAllDescendants(this);
m_layoutAttributesBuilder.buildLayoutAttributesForForSubtree(*this);
m_needsReordering = true;
m_needsTextMetricsUpdate = false;
m_needsPositioningValuesUpdate = false;
updateCachedBoundariesInParents = true;
} else if (m_needsPositioningValuesUpdate) {
// When the x/y/dx/dy/rotate lists change, recompute the layout attributes, and eventually
// update the on-screen font objects as well in all descendants.
if (m_needsTextMetricsUpdate) {
updateFontInAllDescendants(this);
m_needsTextMetricsUpdate = false;
}
m_layoutAttributesBuilder.buildLayoutAttributesForForSubtree(*this);
m_needsReordering = true;
m_needsPositioningValuesUpdate = false;
updateCachedBoundariesInParents = true;
} else if (m_needsTextMetricsUpdate || SVGLayoutSupport::findTreeRootObject(this)->isLayoutSizeChanged()) {
// If the root layout size changed (eg. window size changes) or the transform to the root
// context has changed then recompute the on-screen font size.
updateFontInAllDescendants(this, &m_layoutAttributesBuilder);
ASSERT(!m_needsReordering);
ASSERT(!m_needsPositioningValuesUpdate);
m_needsTextMetricsUpdate = false;
updateCachedBoundariesInParents = true;
}
checkLayoutAttributesConsistency(this, m_layoutAttributes);
// Reduced version of LayoutBlock::layoutBlock(), which only takes care of SVG text.
// All if branches that could cause early exit in LayoutBlocks layoutBlock() method are turned into assertions.
ASSERT(!isInline());
ASSERT(!simplifiedLayout());
ASSERT(!scrollsOverflow());
ASSERT(!hasControlClip());
ASSERT(!positionedObjects());
ASSERT(!isAnonymousBlock());
if (!firstChild())
setChildrenInline(true);
// FIXME: We need to find a way to only layout the child boxes, if needed.
FloatRect oldBoundaries = objectBoundingBox();
ASSERT(childrenInline());
rebuildFloatsFromIntruding();
LayoutUnit beforeEdge = borderBefore() + paddingBefore();
LayoutUnit afterEdge = borderAfter() + paddingAfter() + scrollbarLogicalHeight();
setLogicalHeight(beforeEdge);
LayoutState state(*this, locationOffset());
LayoutUnit paintInvalidationLogicalTop = 0;
LayoutUnit paintInvalidationLogicalBottom = 0;
layoutInlineChildren(true, paintInvalidationLogicalTop, paintInvalidationLogicalBottom, afterEdge);
if (m_needsReordering)
m_needsReordering = false;
// If we don't have any line boxes, then make sure the frame rect is still cleared.
if (!firstLineBox())
setFrameRect(LayoutRect());
m_overflow.clear();
addVisualEffectOverflow();
if (!updateCachedBoundariesInParents)
updateCachedBoundariesInParents = oldBoundaries != objectBoundingBox();
// Invalidate all resources of this client if our layout changed.
if (everHadLayout() && selfNeedsLayout())
SVGResourcesCache::clientLayoutChanged(this);
// If our bounds changed, notify the parents.
if (updateCachedBoundariesInParents)
LayoutSVGBlock::setNeedsBoundariesUpdate();
clearNeedsLayout();
}
