private static RadRect GetArrangeRect(SelectionRegionInfo region, ArrangeDataForDecorations horizontalArrangement, ArrangeDataForDecorations verticalArrangement)
{
double left = -1;
double right = -2;
double top = -1;
double bottom = -2;
var startRowLayout = region.StartItem.RowItemInfo.LayoutInfo;
var endRowLayout = region.EndItem.RowItemInfo.LayoutInfo;
var invalidInfo = new LayoutInfo {
Line = -1
};
LayoutInfo startColumnLayout = region.StartItem.Column != null ? region.StartItem.Column.ItemInfo.LayoutInfo : invalidInfo;
LayoutInfo endColumnLayout = region.EndItem.Column != null ? region.EndItem.Column.ItemInfo.LayoutInfo : invalidInfo;
if (IsInsideArrangement(verticalArrangement, startRowLayout, endRowLayout))
{
if (!verticalArrangement.TryGetStartOfSlot(startRowLayout.Line, out top) && verticalArrangement.SlotsStartLine >= startRowLayout.Line)
{
top = verticalArrangement.SlotsStart;
}
if (!verticalArrangement.TryGetEndOfSlot(endRowLayout.Line + endRowLayout.LineSpan - 1, out bottom) && verticalArrangement.SlotsEndLine <= endRowLayout.Line)
{
bottom = verticalArrangement.SlotsEnd;
}
if (startColumnLayout.Equals(invalidInfo) || endColumnLayout.Equals(invalidInfo) || IsInsideArrangement(horizontalArrangement, startColumnLayout, endColumnLayout))
{
if (!horizontalArrangement.TryGetStartOfSlot(startColumnLayout.Line, out left) && (horizontalArrangement.SlotsStartLine >= startColumnLayout.Line || startColumnLayout.Equals(invalidInfo)))
{
left = horizontalArrangement.SlotsStart;
}
if (!horizontalArrangement.TryGetEndOfSlot(endColumnLayout.Line + endColumnLayout.LineSpan - 1, out right) && (horizontalArrangement.SlotsEndLine <= endColumnLayout.Line || endColumnLayout.Equals(invalidInfo)))
{
right = horizontalArrangement.SlotsEnd;
}
}
}
return(new RadRect(left, top, right - left, bottom - top));
}