private void DrawTicks(Canvas canvas, double yPos)
{
var canvasWidth = canvas.ActualWidth;
var timeLineLength = canvasWidth - FingerWidthInUnits;
var timeLineStart = HalfFingerWidthInUnits;
var minimumDuration = (_timeRange.Duration / timeLineLength) * FingerWidthInUnits;
var tickInterval = TickIntervals.GetFirstTickIntervalWithGreaterDuration(minimumDuration);
var ticks = tickInterval.GetTicksBetween(_timeRange.Start, _timeRange.End);
foreach (var tick in ticks)
{
var tickXPos = timeLineStart + ((tick.Date - _timeRange.Start) / _timeRange.Duration) * timeLineLength;
var tickLine = new Line();
tickLine.X1 = tickXPos;
tickLine.Y1 = yPos;
tickLine.X2 = tickXPos;
tickLine.Y2 = yPos + 4;
tickLine.Fill = Brushes.Black;
tickLine.Stroke = Brushes.Black;
tickLine.StrokeThickness = 2;
canvas.Children.Add(tickLine);
var tickLabel = new TextBlock();
tickLabel.TextAlignment = TextAlignment.Center;
var labelText = tick.ToString();
var pixelsPerDip = VisualTreeHelper.GetDpi(this).PixelsPerDip;
var formattedText = new FormattedText(
labelText,
CultureInfo.CurrentUICulture,
FlowDirection.LeftToRight,
tickLabel.FontFamily.GetTypefaces().First(),
tickLabel.FontSize,
Brushes.Black,
pixelsPerDip
);
tickLabel.Text = labelText;
tickLabel.SetValue(Canvas.LeftProperty, tickXPos - (formattedText.Width / 2));
tickLabel.SetValue(Canvas.TopProperty, yPos + 4);
canvas.Children.Add(tickLabel);
}
}
private TickInterval GetFirstTickIntervalWithGreaterDuration(Duration duration)
{
return(TickIntervals.GetFirstTickIntervalWithGreaterDuration(duration));
}