protected override void PreRendering(Graphics targetGraphics)
{
base.PreRendering(targetGraphics);
float angle = (ValueAsFloat - 1 / 4f) * (float)Math.PI * 2,
width = Width,
height = Height,
size = Math.Min(Width, Height),
cx = width / 2,
cy = height / 2,
pw = size * .08f,
pw2 = pw / 2f;
targetGraphics.DrawLine(new Pen(new SolidBrush(ForeColor.Blend(Color.Black, .6)), size * .06f), new PointF(cx, cy), new PointF(cx + (float)Math.Cos(-angle) * cx, cy - (float)Math.Sin(-angle) * cy));
var pen = new Pen(Color.FromArgb(51, 0, 0, 0), pw);
pen.EndCap = LineCap.Round;
targetGraphics.DrawLine(pen, new PointF(cx, cy), new PointF(cx + pw / 4f, cy + pw / 4f));
pen.Color = Color.FromArgb(151, 0, 0, 0);
targetGraphics.DrawLine(pen, new PointF(cx, cy), new PointF(cx - pw2, cy + pw2));
var rect = new RectangleF(cx - pw2, cy - pw2, pw, pw);
var lgrad = new LinearGradientBrush(rect, Color.DimGray, Color.Gainsboro, -45f);
targetGraphics.FillEllipse(lgrad, rect);
var rgrad = CustomControlShapes.GetRadialGradientBrush(rect, new Color[] { Color.FromArgb(71, 0, 0, 0) }, Color.White);
targetGraphics.FillEllipse(rgrad, rect);
}
protected override GraphicsPath GetRenderShape(float margin = 0)
{
return(CustomControlShapes.GetRoundShape(Width, Height, margin));
}
/// <summary>
/// Gets a new rendering shape.
/// </summary>
/// <param name="margin"></param>
/// <returns>A GraphicsPath representing the control shape.</returns>
protected virtual GraphicsPath GetRenderShape(float margin = 0)
{
return(CustomControlShapes.GetRectShape(Width, Height, margin));
}