Exemple #1
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() && (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);
}
Exemple #2
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 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();
}
Exemple #4
0
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);
}