/// <summary>
/// Gets the value of top y coordinate specified marker of <see cref="ErrorBarGraph"/> by its <see cref="DynamicMarkerViewModel"/>.
/// </summary>
/// <param name="value">An instance of <see cref="DynamicMarkerViewModel"/> class describing specified marker.</param>
/// <param name="targetType"></param>
/// <param name="parameter"></param>
/// <param name="culture"></param>
/// <returns>Top y coordinate of bar. Null if the value is null.</returns>
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
try
{
if (value == null)
{
return(value);
}
DynamicMarkerViewModel model = value as DynamicMarkerViewModel;
if (model != null)
{
return(System.Convert.ToDouble(model.Sources["Y"], CultureInfo.InvariantCulture) +
System.Convert.ToDouble(model.Sources["H"], CultureInfo.InvariantCulture) / 2);
}
else
{
return(0);
}
}
catch (Exception exc)
{
Debug.WriteLine("Cannot convert value: " + exc.Message);
return(0);
}
}
/// <summary>
/// Gets data bounds of a marker of <see cref="MarkerGraph"/> by its <see cref="DynamicMarkerViewModel"/>.
/// </summary>
/// <param name="value">An instance of <see cref="DynamicMarkerViewModel"/> class describing specified marker.</param>
/// <param name="targetType"></param>
/// <param name="parameter"></param>
/// <param name="culture"></param>
/// <returns>Data bounds of specified marker of marker graph.</returns>
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
try
{
DynamicMarkerViewModel model = value as DynamicMarkerViewModel;
double x = System.Convert.ToDouble(model.Sources["X"], CultureInfo.InvariantCulture);
double y = System.Convert.ToDouble(model.Sources["Y"], CultureInfo.InvariantCulture);
return(new DataRect(x, y, x, y));
}
catch (Exception exc)
{
Debug.WriteLine("Cannot convert value to DataRect: " + exc.Message);
return(new DataRect());
}
}
/// <summary>
/// Gets screen thickness of a marker of <see cref="MarkerGraph"/> by its <see cref="DynamicMarkerViewModel"/>.
/// </summary>
/// <param name="value">An instance of <see cref="DynamicMarkerViewModel"/> class describing specified marker.</param>
/// <param name="targetType"></param>
/// <param name="parameter"></param>
/// <param name="culture"></param>
/// <returns>Screen thickness of specified marker of marker graph. If it is 0 than returns 5.</returns>
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
try
{
DynamicMarkerViewModel model = value as DynamicMarkerViewModel;
double d = System.Convert.ToDouble(model[seriesName], CultureInfo.InvariantCulture);
if (d == 0)
{
d = 10;
}
return(new Thickness(d / 2.0));
}
catch (Exception exc)
{
Debug.WriteLine("Cannot convert value to Thickness: " + exc.Message);
return(new Thickness());
}
}