internal void CalculateHilight(TextBlockPlusHilight hilight)
{
Thickness m = new Thickness();
string temp;
if (hilight.Start >= 0)
{
temp = Text;
_element.Text = temp.Substring(0, hilight.Start);
m.Left = _element.ActualWidth;
hilight.Element.Margin = m;
_element.Text = temp.Substring(hilight.Start, hilight.Length);
hilight.Element.Width = _element.ActualWidth;
hilight.Element.Height = 1;
Text = temp;
}
}
public void AddHilight(TextBlockPlusHilight hilight)
{
hilight.Element = new Rectangle();
hilight.Element.Height = 1;
hilight.Element.HorizontalAlignment = HorizontalAlignment.Left;
hilight.Element.VerticalAlignment = VerticalAlignment.Bottom;
_hilights.Add(hilight);
CalculateHilight(hilight);
hilight.Element.StrokeThickness = 1;
hilight.Element.StrokeDashCap = PenLineCap.Square;
hilight.Element.StrokeDashArray = new DoubleCollection()
{
0, 3
};
hilight.Element.StrokeDashOffset = 1;
hilight.Element.Stroke = hilight.Brush;
Children.Add(hilight.Element);
}
public void ClearHilight(TextBlockPlusHilight hilight)
{
Children.Remove(hilight.Element);
_hilights.Remove(hilight);
}