public override void Draw(Android.Graphics.Canvas canvas)
{
base.Draw (canvas);
Paint mBgPaints = new Paint ();
mBgPaints.AntiAlias = true;
mBgPaints.SetStyle (Paint.Style.Fill);
mBgPaints.Color = Color.Blue;
mBgPaints.StrokeWidth = 0.5f;
Paint tPaint = new Paint ();
tPaint.Alpha = 0;
canvas.DrawColor (tPaint.Color);
RectF mOvals = new RectF (40, 40, layout.MeasuredWidth - 40, layout.MeasuredHeight - 40);
decimal total = 0;
foreach (SecuritiesViewModel.PieChartValue value in securitiesViewModel.DataForPieChart ()) {
total += value.amount;
}
if (total == 0) {
return;
}
decimal degressPerAmount = 360 / total;
decimal currentAngle = 0;
foreach (SecuritiesViewModel.PieChartValue value in securitiesViewModel.DataForPieChart ()) {
canvas.DrawArc (mOvals, (float)currentAngle, (float)(degressPerAmount * value.amount), true, mBgPaints);
currentAngle += (degressPerAmount * value.amount);
mBgPaints.SetARGB (255, new Random ().Next (256), new Random ().Next (256), new Random ().Next (256));
}
}
protected override void DispatchDraw (Android.Graphics.Canvas canvas)
{
// Draw interior shadow
canvas.Save ();
canvas.ClipRect (0, 0, Width, Height);
canvas.DrawPaint (shadow);
canvas.Restore ();
base.DispatchDraw (canvas);
// Draw custom list separator
canvas.Save ();
canvas.ClipRect (0, Height - 2, Width, Height);
canvas.DrawColor (Android.Graphics.Color.Rgb (LightTone, LightTone, LightTone));
canvas.Restore ();
}
