protected override void ArrangeOverride()
{
base.ArrangeOverride();
ColumnDefinitions.SetAvailableSize(ActualWidth);
RowDefinitions.SetAvailableSize(ActualHeight);
foreach (FrameworkElement child in GetVisibleChildren())
{
int col = GetColumn(child);
int row = GetRow(child);
if (col >= ColumnDefinitions.Count)
{
col = ColumnDefinitions.Count - 1;
}
if (col < 0)
{
col = 0;
}
if (row >= RowDefinitions.Count)
{
row = RowDefinitions.Count - 1;
}
if (row < 0)
{
row = 0;
}
PointF position = new PointF(
(float)ColumnDefinitions.GetOffset(col) + _innerRect.Location.X,
(float)RowDefinitions.GetOffset(row) + _innerRect.Location.Y);
SizeF childSize = new SizeF(
(float)ColumnDefinitions.GetLength(col, GetColumnSpan(child)),
(float)RowDefinitions.GetLength(row, GetRowSpan(child)));
ArrangeChild(child, child.HorizontalAlignment, child.VerticalAlignment, ref position, ref childSize);
child.Arrange(SharpDXExtensions.CreateRectangleF(position, childSize));
}
}