public object?Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
// Convert all colour types to Colour32
var colour = Colour32.Black;
switch (value)
{
case Color col:
{
colour = col.ToColour32();
break;
}
case Colour32 col32:
{
colour = col32;
break;
}
case uint u32:
{
colour = new Colour32(u32);
break;
}
case int i32:
{
colour = new Colour32((uint)i32);
break;
}
}
if (parameter is string op)
{
var m = Regex.Match(op, @"lerp:\s*([0-9a-fA-F]{8})\s+(\d\.?\d*)");
if (m.Success &&
Colour32.TryParse(m.Groups[1].Value) is Colour32 target &&
double_.TryParse(m.Groups[2].Value) is double frac)
{
colour = Colour32.Lerp(colour, target, frac);
}
}
return(new SolidColorBrush(colour.ToMediaColor()));
}
public object?Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (!(value is bool b))
{
return(null);
}
if (!(parameter is string s))
{
return(null);
}
var c = s.Split('|');
if (c.Length != 2 || !Colour32.TryParse(c[0], out var true_colour) || !Colour32.TryParse(c[1], out var false_colour))
{
throw new Exception($"{nameof(BoolToBrush)} parameter has the incorrect format. Expected '<true_colour>|<false_colour>'");
}
var colour = b ? true_colour : false_colour;
return(new SolidColorBrush(colour.ToMediaColor()));
}
public object?ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
if (!(value is string str))
{
return(null);
}
if (targetType.Equals(typeof(Color)))
{
return(Colour32.TryParse(str)?.ToMediaColor());
}
if (targetType.Equals(typeof(Colour32)))
{
return(Colour32.TryParse(str));
}
if (targetType.Equals(typeof(uint)))
{
return(Colour32.TryParse(str)?.ARGB);
}
if (targetType.Equals(typeof(int)))
{
return((int?)Colour32.TryParse(str)?.ARGB);
}
return(null);
}