private IEnumerable <IconDescription> ToIconDescription(ThemifyIconsIcon icon, string filter)
{
var memberInfo = typeof(ThemifyIconsIcon).GetMember(icon.ToString()).FirstOrDefault();
if (memberInfo == null)
{
yield break;
}
foreach (var cat in memberInfo.GetCustomAttributes(typeof(IconCategoryAttribute), false).Cast <IconCategoryAttribute>())
{
var desc = memberInfo.GetCustomAttributes(typeof(DescriptionAttribute), false).Cast <DescriptionAttribute>().First();
var id = memberInfo.GetCustomAttributes(typeof(IconIdAttribute), false).Cast <IconIdAttribute>().FirstOrDefault();
if (!string.IsNullOrEmpty(filter) &&
!(
desc.Description.IndexOf(filter, StringComparison.CurrentCultureIgnoreCase) > -1 ||
icon.ToString().IndexOf(filter, StringComparison.CurrentCultureIgnoreCase) > -1)
)
{
continue;
}
yield return(new IconDescription {
Category = cat.Category, Description = desc.Description, Icon = icon, Id = id?.Id
});
}
}
/// <summary>
/// Creates a new System.Windows.Media.ImageSource of a specified ThemifyIconsIcon and foreground System.Windows.Media.Brush.
/// </summary>
/// <param name="icon">The ThemifyIcons icon to be drawn.</param>
/// <param name="foregroundBrush">The System.Windows.Media.Brush to be used as the foreground.</param>
/// <returns>A new System.Windows.Media.ImageSource</returns>
public static ImageSource CreateImageSource(ThemifyIconsIcon icon, Brush foregroundBrush, double emSize = 100)
{
var charIcon = char.ConvertFromUtf32((int)icon);
var visual = new DrawingVisual();
using (var drawingContext = visual.RenderOpen())
{
drawingContext.DrawText(
new FormattedText(charIcon, CultureInfo.InvariantCulture, FlowDirection.LeftToRight,
ThemifyIconsTypeface, emSize, foregroundBrush)
{
TextAlignment = TextAlignment.Center
}, new Point(0, 0));
}
return(new DrawingImage(visual.Drawing));
}
private static void ContentChanged(DependencyObject sender, DependencyPropertyChangedEventArgs evt)
{
// If target is not a ContenControl just ignore: Themify.Content property can only be set on a ContentControl element
if (!(sender is ContentControl))
{
return;
}
ContentControl target = (ContentControl)sender;
// If value is not a ThemifyIconsIcon just ignore: Themify.Content property can only be set to a ThemifyIconsIcon value
if (!(evt.NewValue is ThemifyIconsIcon))
{
return;
}
ThemifyIconsIcon symbolIcon = (ThemifyIconsIcon)evt.NewValue;
int symbolCode = (int)symbolIcon;
char symbolChar = (char)symbolCode;
target.FontFamily = ThemifyIconsFontFamily;
target.Content = symbolChar;
}
/// <summary>
/// Sets the content of a ContentControl expressed as a ThemifyIcons icon. This will cause the content to be redrawn.
/// </summary>
/// <param name="target">The ContentControl where to set the content</param>
/// <param name="value">ThemifyIcons icon to set as content</param>
public static void SetContent(DependencyObject target, ThemifyIconsIcon value)
{
target.SetValue(ContentProperty, value);
}
