bool RenderFrameSet::userResize(MouseEvent* evt)
{
    if (flattenFrameSet())
        return false;

    if (!m_isResizing) {
        if (needsLayout())
            return false;
        if (evt->type() == eventNames().mousedownEvent && evt->button() == LeftButton) {
            FloatPoint localPos = absoluteToLocal(evt->absoluteLocation(), UseTransforms);
            startResizing(m_cols, localPos.x());
            startResizing(m_rows, localPos.y());
            if (m_cols.m_splitBeingResized != noSplit || m_rows.m_splitBeingResized != noSplit) {
                setIsResizing(true);
                return true;
            }
        }
    } else {
        if (evt->type() == eventNames().mousemoveEvent || (evt->type() == eventNames().mouseupEvent && evt->button() == LeftButton)) {
            FloatPoint localPos = absoluteToLocal(evt->absoluteLocation(), UseTransforms);
            continueResizing(m_cols, localPos.x());
            continueResizing(m_rows, localPos.y());
            if (evt->type() == eventNames().mouseupEvent && evt->button() == LeftButton) {
                setIsResizing(false);
                return true;
            }
        }
    }

    return false;
}
void RenderFrameSet::layout()
{
    StackStats::LayoutCheckPoint layoutCheckPoint;
    ASSERT(needsLayout());

    bool doFullRepaint = selfNeedsLayout() && checkForRepaintDuringLayout();
    LayoutRect oldBounds;
    RenderLayerModelObject* repaintContainer = 0;
    if (doFullRepaint) {
        repaintContainer = containerForRepaint();
        oldBounds = clippedOverflowRectForRepaint(repaintContainer);
    }

    if (!parent()->isFrameSet() && !document().printing()) {
        setWidth(view().viewWidth());
        setHeight(view().viewHeight());
    }

    unsigned cols = frameSetElement().totalCols();
    unsigned rows = frameSetElement().totalRows();

    if (m_rows.m_sizes.size() != rows || m_cols.m_sizes.size() != cols) {
        m_rows.resize(rows);
        m_cols.resize(cols);
    }

    LayoutUnit borderThickness = frameSetElement().border();
    layOutAxis(m_rows, frameSetElement().rowLengths(), height() - (rows - 1) * borderThickness);
    layOutAxis(m_cols, frameSetElement().colLengths(), width() - (cols - 1) * borderThickness);

    if (flattenFrameSet())
        positionFramesWithFlattening();
    else
        positionFrames();

    RenderBox::layout();

    computeEdgeInfo();

    updateLayerTransform();

    if (doFullRepaint) {
        repaintUsingContainer(repaintContainer, pixelSnappedIntRect(oldBounds));
        LayoutRect newBounds = clippedOverflowRectForRepaint(repaintContainer);
        if (newBounds != oldBounds)
            repaintUsingContainer(repaintContainer, pixelSnappedIntRect(newBounds));
    }

    clearNeedsLayout();
}
void RenderFrameSet::layout()
{
    ASSERT(needsLayout());

    bool doFullRepaint = selfNeedsLayout() && checkForRepaintDuringLayout();
    IntRect oldBounds;
    if (doFullRepaint)
        oldBounds = absoluteClippedOverflowRect();

    if (!parent()->isFrameSet() && !document()->printing()) {
        setWidth(view()->viewWidth());
        setHeight(view()->viewHeight());
    }

    size_t cols = frameSet()->totalCols();
    size_t rows = frameSet()->totalRows();

    if (m_rows.m_sizes.size() != rows || m_cols.m_sizes.size() != cols) {
        m_rows.resize(rows);
        m_cols.resize(cols);
    }

    int borderThickness = frameSet()->border();
    layOutAxis(m_rows, frameSet()->rowLengths(), height() - (rows - 1) * borderThickness);
    layOutAxis(m_cols, frameSet()->colLengths(), width() - (cols - 1) * borderThickness);

    if (flattenFrameSet())
        positionFramesWithFlattening();
    else
        positionFrames();

    RenderBox::layout();

    computeEdgeInfo();

    if (doFullRepaint) {
        view()->repaintViewRectangle(oldBounds);
        IntRect newBounds = absoluteClippedOverflowRect();
        if (newBounds != oldBounds)
            view()->repaintViewRectangle(newBounds);
    }

    setNeedsLayout(false);
}