/// <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)
{
LevelDisplay level = obj as LevelDisplay;
if (level == null)
{
return;
}
level.ValueTextBox.Text = Math.Abs(level.Value).ToString(level.stringFormat);
level.SetValue(LevelDisplay.PixelValuePropertyKey, level.PixelValue);
}
/// <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 LevelDisplayPropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
LevelDisplay level = obj as LevelDisplay;
switch (e.Property.Name)
{
case "Labels":
level.ParseLabels();
level.RecalculateTicks();
break;
}
}
/// <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)
{
LevelDisplay level = dependencyObject as LevelDisplay;
if (level == null)
{
return(null);
}
var newVal = (double)baseValue;
// Check if we need to round it
if (level.rounder != 0.0)
{
newVal = Math.Round(level.rounder * newVal) / level.rounder;
}
// Make sure it's within our defined range
newVal = Math.Min(Math.Max(-level.Range, newVal), level.Range);
return(newVal);
}
