protected override void RenderBorder(DrawingContext drawingContext)
{
RadialIndicator radialIndicator = (RadialIndicator)Target;
drawingContext.DrawGeometry(Brushes.Transparent, new Pen(radialIndicator.BorderBrush, radialIndicator.BorderThickness),
GetControlShape());
}
protected override Geometry GetControlShape()
{
RadialIndicator radialIndicator = (RadialIndicator)Target;
double w = radialIndicator.ActualWidth, h = radialIndicator.ActualHeight,
cx = w / 2, cy = h / 2,
rx = w / 2, ry = h / 2;
EllipseGeometry eg0 = new EllipseGeometry(new Point(cx, cy), rx, ry);
EllipseGeometry eg1 = new EllipseGeometry(new Point(cx, cy),
rx - radialIndicator.RingThickness, ry - radialIndicator.RingThickness);
return(new CombinedGeometry(GeometryCombineMode.Exclude, eg0, eg1));
}
protected override void RenderContent(DrawingContext drawingContext)
{
RadialIndicator radialIndicator = (RadialIndicator)Target;
double w = radialIndicator.ActualWidth, h = radialIndicator.ActualHeight,
cx = w / 2, cy = h / 2,
rx = w / 2, ry = h / 2,
val = radialIndicator.GetPercentage() / 100;
Geometry ring = GetControlShape(),
pie = getIndicatorPie(cx, cy, rx, ry, 90,
(radialIndicator.Direction == IndicatorDirection.Backward ? val : -val * 360.0));
drawingContext.DrawGeometry(radialIndicator.Foreground, new Pen(),
new CombinedGeometry(GeometryCombineMode.Intersect, ring, pie));
}
public RadialIndicatorRenderer(RadialIndicator target) : base(target)
{
}
protected override void RenderBackground(DrawingContext drawingContext)
{
RadialIndicator radialIndicator = (RadialIndicator)Target;
drawingContext.DrawGeometry(radialIndicator.Background, new Pen(), GetControlShape());
}