protected override void OnCreated()
{
triangle = CreatePath();
triangle.BeginFigure(0, 0);
triangle.AddLine(150, 120);
triangle.AddLine(0, 240);
triangle.EndFigure(true);
arc = CreatePath();
arc.BeginFigure(0, 0);
arc.AddArc(0, 0, 100, MathHelper.ConvertDegToRad(0), MathHelper.ConvertDegToRad(90));
arc.EndFigure(true);
}
protected override void OnDraw(IContext context)
{
if (path == null)
{
path = CreatePath();
path.BeginFigure(1, 1 + cornerRadius);
path.AddArc(1 + cornerRadius, 1 + cornerRadius, cornerRadius, MathHelper.ConvertDegToRad(180), MathHelper.ConvertDegToRad(270));
path.AddLine(context.Width - 2, 1);
path.AddLine(context.Width - 2, context.Height - 2 - cornerRadius);
path.AddArc(context.Width - 2 - cornerRadius, context.Height - 2 - cornerRadius, cornerRadius, MathHelper.ConvertDegToRad(0), MathHelper.ConvertDegToRad(90));
path.AddLine(1, context.Height - 2);
path.AddLine(1, 1 + cornerRadius);
path.EndFigure(false);
}
context.Color = Color.Green;
context.StrokeWidth = 3;
context.DrawPath(path, 0, 0);
context.SetFont(font);
context.DrawText(text, 0, 0, context.Width, context.Height, Xamarin.Forms.TextAlignment.Center, Xamarin.Forms.TextAlignment.Center);
}