public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (value is int intValue && 0 <= intValue && intValue <= 7)
{
string key = $"checks{intValue}";
bool invertColors = (bool)Application.Current.Resources["AvalonEdit.SyntaxColor.Invert"];
var cache = invertColors ? darkImageCache : lightImageCache;
if (!cache.TryGetValue(key, out BitmapImage image))
{
var uriString = $@"pack://application:,,,/dnGREP;component/Images/checks{intValue}.png";
image = new BitmapImage(new Uri(uriString));
if (invertColors)
{
image = ColorInverter.Convert(ColorInverter.Invert(image));
}
cache.Add(key, image);
}
return(image);
}
return(null);
}
private void RegisterHighlighting(string name, string[] extensions, string resourceName, bool invertColors)
{
if (string.IsNullOrWhiteSpace(name))
{
throw new ArgumentNullException("name");
}
if (string.IsNullOrWhiteSpace(resourceName))
{
throw new ArgumentNullException("resourceName");
}
IHighlightingDefinition highlighting = LoadHighlightingDefinition(resourceName);
if (highlighting == null)
{
return;
}
if (invertColors)
{
ColorInverter.TranslateThemeColors(highlighting);
}
lock (lockObj)
{
if (invertColors)
{
if (name != null)
{
invertedHighlightingsByName[name] = highlighting;
}
if (extensions != null)
{
foreach (string ext in extensions)
{
invertedHighlightingsByExtension[ext] = highlighting;
}
}
}
else
{
if (name != null)
{
normalHighlightingsByName[name] = highlighting;
}
if (extensions != null)
{
foreach (string ext in extensions)
{
normalHighlightingsByExtension[ext] = highlighting;
}
}
}
}
}
