public override void TouchesBegan(NSSet touches, UIEvent evt)
{
base.TouchesBegan(touches, evt);
UITouch touch = (UITouch)touches.AnyObject;
CGPoint touchPoint = touch.LocationInView(chart.PlotView);
TKChartSelectionInfo hitTestInfo = chart.HitTestForPoint(touchPoint);
if (hitTestInfo != null)
{
selectedPoint = chart.VisualPointForSeries(hitTestInfo.Series, hitTestInfo.DataPointIndex);
originalLocation = touchPoint;
if (selectedPoint != null)
{
selectedPoint.Animator = null;
originalPosition = selectedPoint.Center;
}
}
}
public override void TrackballDidTrackSelection (TKChart chart, TKChartSelectionInfo[] selection)
{
StringBuilder str = new StringBuilder();
bool first = true;
foreach (TKChartSelectionInfo info in selection) {
var point = info.DataPoint as TKChartDataPoint;
if (!first) {
str.Append ("\n");
} else {
first = !first;
}
str.Append (string.Format ("Day {0} series {1} - {2}", point.DataXValue, info.Series.Index + 1, point.DataYValue));
}
chart.Trackball.Tooltip.Text = str.ToString();
}
