private void DrawHeader(Graphics graphics, Rectangle clipRect)
{
var info = _mHeaderInfo;
var viewRect = _mViewport.Rectangle;
// Draw header backgrounds
var e = new HeaderPaintEventArgs(graphics, clipRect, this, this.Font, this.HeaderFormat);
OnPaintHeader(e);
var gradient = new LinearGradientBrush(info.H1Rect, e.Format.GradientLight, e.Format.GradientDark, LinearGradientMode.Vertical);
graphics.FillRectangles(gradient, new RectangleF[] { info.H1Rect, info.H2Rect });
graphics.DrawRectangles(e.Format.Border, new RectangleF[] { info.H1Rect, info.H2Rect });
// Draw the header scales
__DrawScale(graphics, clipRect, e.Font, e.Format, info.LabelRects, info.DateTimes);
// draw "Now" line
float xf = GetSpan(Scheduler.Now);
var pen = new Pen(e.Format.Border.Color)
{
DashStyle = DashStyle.Dash, Color = Color.Red
};
graphics.DrawLine(pen, new PointF(xf, _mViewport.Y), new PointF(xf, _mViewport.Rectangle.Bottom));
}
protected virtual void OnPaintHeader(HeaderPaintEventArgs e)
{
PaintHeader?.Invoke(this, e);
}