private void UpdateDataPointTemplates(PChartView instance)
{
if (instance.PChart.ActualHeight > 1 && instance.PChart.Height >= 1)
{
instance.PChart.Height -= 1;
_restoreBorder = true;
}
if (_firstUpdate)
{
Observable.FromEventPattern<SizeChangedEventHandler, SizeChangedEventArgs>(
handler => instance.PChart.SizeChanged += handler,
handler => instance.PChart.SizeChanged -= handler
).SubscribeWeakly(this, (target, handler) =>
{
if (target._restoreBorder)
{
target.PChart.Height += (handler.EventArgs.PreviousSize.Height - handler.EventArgs.NewSize.Height);
target._restoreBorder = false;
}
});
_firstUpdate = false;
}
}
private void UpdatePoints(PChartView instance, EventPattern<PropertyChangedEventArgs> handler)
{
if (((ChartBase)DataContext).DataSource.Count > 0)
{
if (handler.EventArgs.PropertyName == "USL" || handler.EventArgs.PropertyName == "LSL")
UpdateDataPointTemplates(instance);
if (handler.EventArgs.PropertyName.Contains("Show"))
OnPropertyChanged("ShowSpecsCheckbox");
}
}
private void OnDataContextPropertyChanged(PChartView instance, EventPattern<PropertyChangedEventArgs> handler)
{
if (handler.EventArgs.PropertyName.Contains("Show"))
UpdateDataPointTemplates(instance);
if (handler.EventArgs.PropertyName == "AverageLimits")
UpdateControlLimits(instance.DataContext as ChartBase);
}
private void OnAddNativeBehavior(PChartView currentControl, EventPattern<EventArgs> eventPattern)
{
Dispatcher.BeginInvoke(() =>
{
var nativeBehavior = ((TrackballBehavior)eventPattern.Sender);
Observable.FromEventPattern<EventHandler<TrackBallInfoEventArgs>, TrackBallInfoEventArgs>(
handler => nativeBehavior.TrackInfoUpdated += handler,
handler => nativeBehavior.TrackInfoUpdated -= handler
).SubscribeWeakly(this, (target, handler) => target.ChartTrackBallBehavior_TrackInfoUpdated(handler.Sender, handler.EventArgs));
currentControl.PChart.Behaviors.Add(nativeBehavior);
nativeBehavior.Parents.Add(currentControl.PChart);
});
}