public override void Draw(Cairo.Context dc)
{
if (TheFill != null)
{
dc.FillEllipse(BB); //TheFill,
}
if (ThePen != null)
{
dc.DrawEllipse(BB); //ThePen,
}
}
public override void Draw(Cairo.Context dc)
{
Pen p = IsSelected ? SelPen : StdPen;
Rect lBB = GetBB(Parent.Height);
// draw lines
if (L1Visible)
{
dc.DrawLine(L1Origin, lBB.Center()); //DashedPen,
}
if (L2Visible)
{
dc.DrawLine(L2Origin, lBB.Center()); //DashedPen,
}
// draw CP
dc.FillEllipse(lBB); //Brushes.Gray,
dc.DrawEllipse(lBB); //p,
}
protected override bool OnExposeEvent(Gdk.EventExpose ev)
{
base.OnExposeEvent(ev);
using (Cairo.Context g = CairoHelper.Create(GdkWindow)) {
Cairo.Rectangle ourRect = Rectangle.Inflate(GdkWindow.GetBounds(), -1, -1).ToCairoRectangle();
double diameter = Math.Min(ourRect.Width, ourRect.Height);
double radius = (diameter / 2.0);
Cairo.PointD center = new Cairo.PointD(
(float)(ourRect.X + radius),
(float)(ourRect.Y + radius));
double theta = (this.angleValue * 2.0 * Math.PI) / 360.0;
Cairo.Rectangle ellipseRect = new Cairo.Rectangle(ourRect.Location(), diameter, diameter);
Cairo.Rectangle ellipseOutlineRect = ellipseRect;
g.DrawEllipse(ellipseOutlineRect, new Cairo.Color(.1, .1, .1), 1);
double endPointRadius = radius - 2;
Cairo.PointD endPoint = new Cairo.PointD(
(float)(center.X + (endPointRadius * Math.Cos(theta))),
(float)(center.Y - (endPointRadius * Math.Sin(theta))));
float gripSize = 2.5f;
Cairo.Rectangle gripEllipseRect = new Cairo.Rectangle(center.X - gripSize, center.Y - gripSize, gripSize * 2, gripSize * 2);
g.FillEllipse(gripEllipseRect, new Cairo.Color(.1, .1, .1));
g.DrawLine(center, endPoint, new Cairo.Color(.1, .1, .1), 1);
}
return(true);
}
public static void FillEllipse(this Cairo.Context dc, System.Windows.Rect r)
{
dc.FillEllipse(r.Center().X, r.Center().Y, r.Width, r.Height);
}
