/// <summary>
/// Called by the dependency property when any of the slider properties have changed.
/// </summary>
/// <param name="obj">The slider object that caused the change.</param>
/// <param name="e">The <see cref="DependencyPropertyChangedEventArgs"/> instance containing the event data.</param>
private static void SliderPropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
bool callLabelRecalc = true;
RangeSlider slider = obj as RangeSlider;
switch (e.Property.Name)
{
case "Maximum":
case "Minimum":
case "TickStart":
case "TickEnd":
case "TickMinorSpacing":
case "TickMajorSpacing":
// No extra processing neccessary
break;
case "TickLabels":
slider.ParseLabels();
break;
default:
callLabelRecalc = false;
break;
}
if (callLabelRecalc)
{
slider.RecalculateLabelsAndTicks();
}
}
/// <summary>
/// Called by the dependency property when the Value has changed.
/// </summary>
/// <param name="obj">The object.</param>
/// <param name="e">The <see cref="DependencyPropertyChangedEventArgs"/> instance containing the event data.</param>
private static void LimitsChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
RangeSlider slider = obj as RangeSlider;
if (slider == null)
{
return;
}
slider.CalculatePartHeights();
}
/// <summary>
/// Called by the dependency property when the Value has changed.
/// </summary>
/// <param name="obj">The object.</param>
/// <param name="e">The <see cref="DependencyPropertyChangedEventArgs"/> instance containing the event data.</param>
private static void ValueChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
RangeSlider slider = obj as RangeSlider;
if (slider == null)
{
return;
}
if (slider.ActualHeight > 0)
{
double valueYPos = slider.UsableSize * slider.GetLocation(slider.Value);
slider.SetValue(RangeSlider.ValueMarginPropertyKey, new Thickness(slider.IsVertical ? 0 : valueYPos, slider.IsVertical ? valueYPos : 0, 0, 0));
}
}
/// <summary>
/// Coerces the given value to a valid range.
/// </summary>
/// <param name="dependencyObject">The dependency object.</param>
/// <param name="baseValue">The base value.</param>
/// <returns></returns>
private static object CoerceValueCallback(DependencyObject dependencyObject, object baseValue)
{
RangeSlider slider = dependencyObject as RangeSlider;
if (slider == null)
{
return(null);
}
var newVal = (double)baseValue;
// Check if we need to round it
if (slider.rounder != 0.0)
{
newVal = Math.Round(slider.rounder * newVal) / slider.rounder;
}
// Make sure it's within our defined range
newVal = Math.Min(Math.Max(slider.Minimum, newVal), slider.Maximum);
return(newVal);
}