private void OnCanvasLoaded(object sender, RoutedEventArgs e)
{
Canvas canvas = (Canvas)sender;
RegisterNames(canvas);
_pixelsPerDip = VisualTreeHelper.GetDpi(this).PixelsPerDip;
_canvasWidth = canvas.ActualWidth;
_canvasHeight = canvas.ActualHeight;
_time.FontSize = 12;
_time.FontWeight = FontWeights.Bold;
double outerRadiusFactor = 0.24;
double innerRadiusFactor = 0.15;
_outerCircleRadius = (int)(_canvasHeight * outerRadiusFactor);
_outerCircleDiameter = _outerCircleRadius * 2;
_innerCircleRadius = (int)(_canvasHeight * innerRadiusFactor);
var totalWidthNeeded = 3.25 * _outerCircleDiameter;
_centrePoint = CalcCentrePoint(totalWidthNeeded);
_donut.Data = PieSlice.Get(0.1, _centrePoint, _innerCircleRadius, _outerCircleRadius);
_secondsBall.Width = (double)_innerCircleRadius / 6;
_secondsBall.Height = (double)_innerCircleRadius / 6;
_time.Text = GetTimeText();
Size sz = GetTextSize(useExtent: true);
while (sz.Height < (3 * (double)_outerCircleDiameter) / 4)
{
_time.FontSize += 0.5;
sz = GetTextSize(useExtent: true);
}
sz = GetTextSize(useExtent: true);
Canvas.SetLeft(_time, _centrePoint.X - _outerCircleRadius + totalWidthNeeded - sz.Width);
Canvas.SetTop(_time, _centrePoint.Y - sz.Height);
RenderPieSliceAndBall(0.1, 0);
Visibility = Visibility.Visible;
Animations.FadeIn(this, new FrameworkElement[] { _donut, _secondsBall, _pie, _time });
}
private void RenderPieSliceAndBall(double angle, double secondsElapsed)
{
if (!Dispatcher.HasShutdownStarted)
{
_pie.Data = PieSlice.Get(angle, _centrePoint, _innerCircleRadius, _outerCircleRadius);
Point ballPt = SecondsBall.GetPos(
_centrePoint,
(int)secondsElapsed % 60,
_secondsBall.Width / 2,
_innerCircleRadius);
Canvas.SetLeft(_secondsBall, ballPt.X);
Canvas.SetTop(_secondsBall, ballPt.Y);
_time.Text = GetTimeText();
}
}