public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (value == null)
{
return(null);
}
RibbonPage rb = (RibbonPage)value;
int currentPageindex = rb.PageCategory.Pages.IndexOf(rb);
return(currentPageindex == 0 ? new Thickness(PageOffsetHelper.GetPageOffset(rb.Ribbon), 0, 0, 0) : (Thickness)rb.FindResource(new RibbonPageThemeKeyExtension()
{
ResourceKey = RibbonPageThemeKeys.CaptionControlMargin
}));
}
public static void SetPageOffset(DependencyObject target, PageOffsetHelper value)
{
target.SetValue(PageOffsetProperty, value);
}