/// <summary>
/// Gets the rectangle of object in screen coordinates
/// </summary>
/// <param name="g">Current Graphics object, use it for MeasureStringWidth or something else</param>
/// <param name="view_scale">Current view scale of chart</param>
public virtual RectangleF GetScreenRect(Graphics g, double view_scale)
{
var rr = GetRealRect(g, view_scale);
var lb = Chart.ToScreenPoint(new DPoint(rr.X, rr.Y));
var sz = Chart.ToScreenSize(new DSize(rr.Width, rr.Height));
return(new RectangleF(lb.X, lb.Y, sz.Width, sz.Height));
}
/// <summary>
/// Draw text on the center of rect object
/// </summary>
/// <param name="g">Graphics object to draw string</param>
/// <param name="text">Text to draw on object</param>
protected virtual void DrawStringCenter(Graphics g, string text)
{
if (text != null && text != string.Empty)
{
var c = Chart.ToScreenPoint(Center);
var tsz = g.MeasureString(text, Font);
g.DrawString(text, Font, TextBrush, c.X - tsz.Width / 2, c.Y - tsz.Height / 2);
}
}