/// <summary>
/// Callback when the IsGreyable property is set or changed.
/// </summary>
private static void OnChangedIsGreyable(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e)
{
Image image = dependencyObject as Image;
if (null != image)
{
if ((bool)e.NewValue)
{
// turn greyability effect on if it is not turned on yet
if (image.ReadLocalValue(GreyabilityEffectProperty) == DependencyProperty.UnsetValue)
{
ImageGreyer greyability = new ImageGreyer(image);
image.SetValue(GreyabilityEffectProperty, greyability);
}
}
else
{
// remove greyability effect
if (image.ReadLocalValue(GreyabilityEffectProperty) != DependencyProperty.UnsetValue)
{
ImageGreyer greyability = (ImageGreyer)image.ReadLocalValue(GreyabilityEffectProperty);
greyability.Detach();
image.SetValue(GreyabilityEffectProperty, DependencyProperty.UnsetValue);
}
}
}
}
/// <summary>
/// Callback when the IsGreyable property is set or changed.
/// </summary>
private static void OnChangedIsGreyable(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e)
{
Image image = dependencyObject as Image;
if (null != image)
{
if ((bool)e.NewValue)
{
// turn greyability effect on if it is not turned on yet
if (image.ReadLocalValue(GreyabilityEffectProperty) == DependencyProperty.UnsetValue)
{
ImageGreyer greyability = new ImageGreyer(image);
image.SetValue(GreyabilityEffectProperty, greyability);
}
}
else
{
// remove greyability effect
if (image.ReadLocalValue(GreyabilityEffectProperty) != DependencyProperty.UnsetValue)
{
ImageGreyer greyability = (ImageGreyer)image.ReadLocalValue(GreyabilityEffectProperty);
greyability.Detach();
image.SetValue(GreyabilityEffectProperty, DependencyProperty.UnsetValue);
}
}
}
}
