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()
{
if (!document().paginated())
setPageLogicalHeight(0);
if (shouldUsePrintingLayout())
m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = logicalWidth();
SubtreeLayoutScope layoutScope(this);
// 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) {
layoutScope.setChildNeedsLayout(this);
for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {
if (child->isSVGRoot())
continue;
if ((child->isBox() && toRenderBox(child)->hasRelativeLogicalHeight())
|| child->style()->logicalHeight().isPercent()
|| child->style()->logicalMinHeight().isPercent()
|| child->style()->logicalMaxHeight().isPercent())
layoutScope.setChildNeedsLayout(child);
}
if (document().svgExtensions())
document().accessSVGExtensions()->invalidateSVGRootsWithRelativeLengthDescendents(&layoutScope);
}
ASSERT(!m_layoutState);
if (!needsLayout())
return;
LayoutState state;
initializeLayoutState(state);
m_pageLogicalHeightChanged = false;
m_layoutState = &state;
layoutContent(state);
if (m_frameView->partialLayout().isStopping()) {
m_layoutState = 0;
return;
}
#ifndef NDEBUG
checkLayoutState(state);
#endif
m_layoutState = 0;
clearNeedsLayout();
}
