/// <summary>
/// Raises the <see cref="E:PreviewRangeChanged" /> event.
/// </summary>
/// <param name="e">The <see cref="PreviewRangeChangedEventArgs"/> instance containing the event data.</param>
protected void OnPreviewRangeChanged(PreviewRangeChangedEventArgs e)
{
PreviewRangeChanged?.Invoke(e);
if (PreviewRangeChangedCommand != null && PreviewRangeChangedCommand.CanExecute(e))
{
PreviewRangeChangedCommand.Execute(e);
}
}
private void Axis_OnPreviewRangeChanged(PreviewRangeChangedEventArgs e)
{
var viewModel = (MainWindowModel)DataContext;
var percent = viewModel.MaxRange * 0.3;
if (e.PreviewMinValue < viewModel.MinValueX - percent)
{
e.Cancel = true;
}
if (e.PreviewMaxValue > viewModel.MaxValueX + percent)
{
e.Cancel = true;
}
}
private void Axis_OnPreviewRangeChanged(PreviewRangeChangedEventArgs e)
{
if (chartStockPrice.Series == null)
{
return;
}
//if less than -0.5, cancel
limitMin = e.PreviewMinValue < AxisMin;
//if greater than the number of items on our array plus a 0.5 offset, stay on max limit
limitMax = e.PreviewMaxValue > AxisMax;
//finally if the axis range is less than 1, cancel the event
if (e.PreviewMaxValue - e.PreviewMinValue < AxisUnit * 20)
{
e.Cancel = true;
}
}
private void Axis_OnPreviewRangeChanged(PreviewRangeChangedEventArgs e)
{
//TODO: Решить проблему c ограничением диапозона на шкале. Он не может быть ограничеен при изменении со скролбара
return;
//TODO: Решить проблему, что при потере фокуса панинг работает некорректно
var viewModel = ExtractViewModel();
var percent = viewModel.MaxRange * 0.3;
if (e.PreviewMinValue < viewModel.MinValueX - percent)
{
e.Cancel = true;
}
if (e.PreviewMaxValue > viewModel.MaxValueX + percent)
{
e.Cancel = true;
}
}
/// <summary>
/// Sets the range.
/// </summary>
/// <param name="min">The minimum.</param>
/// <param name="max">The maximum.</param>
public void SetRange(double min, double max)
{
var bMax = double.IsNaN(MaxValue) ? Model.TopLimit : MaxValue;
var bMin = double.IsNaN(MinValue) ? Model.BotLimit : MinValue;
var nMax = double.IsNaN(MaxValue) ? Model.TopLimit : MaxValue;
var nMin = double.IsNaN(MinValue) ? Model.BotLimit : MinValue;
var e = new RangeChangedEventArgs
{
Range = nMax - nMin,
RightLimitChange = bMax - nMax,
LeftLimitChange = bMin - nMin,
Axis = this
};
var pe = new PreviewRangeChangedEventArgs(e)
{
PreviewMaxValue = max,
PreviewMinValue = min
};
OnPreviewRangeChanged(pe);
if (pe.Cancel)
{
return;
}
MaxValue = max;
MinValue = min;
Model.Chart.Updater.Run();
OnRangeChanged(e);
}
private void Axis_OnPreviewRangeChanged(PreviewRangeChangedEventArgs eventargs)
{
((VisualizerViewModel)DataContext)?.OnRangeChanged((long)eventargs.PreviewMinValue, (long)eventargs.PreviewMaxValue);
}
