protected override void ArrangeBorder(RectangleF finalRect)
{
float headerLabelHeight = _headerLabel.DesiredSize.Height;
float halfLabelHeight = headerLabelHeight / 2;
float halfThickness = (float)BorderThickness / 2;
float insetY = (float)Math.Max(halfThickness, halfLabelHeight) - halfThickness;
RectangleF borderRect = new RectangleF(finalRect.X, finalRect.Y + insetY,
finalRect.Width, finalRect.Height - insetY);
base.ArrangeBorder(borderRect);
const float realHeaderInset = HEADER_INSET_LINE + HEADER_INSET_SPACE;
float borderInsetX = GetBorderCornerInsetX();
_headerLabelRect = new RectangleF(
finalRect.X + borderInsetX + realHeaderInset, finalRect.Y,
finalRect.Width - (borderInsetX + realHeaderInset) * 2, headerLabelHeight);
if (_headerLabelRect.Width < 0)
{
_headerLabelRect.Width = 0;
}
if (_headerLabelRect.Height > finalRect.Height)
{
_headerLabelRect.Height = finalRect.Height;
}
_headerLabel.Arrange(_headerLabelRect);
}
