public static ValueTask <FluidValue> ColorExtract(FluidValue input, FilterArguments arguments, TemplateContext context)
{
var value = input.ToStringValue();
RgbColor rgbColor;
HslColor hslColor;
if (HexColor.TryParse(value, out HexColor hexColor))
{
rgbColor = (RgbColor)hexColor;
hslColor = (HslColor)hexColor;
}
else if (RgbColor.TryParse(value, out rgbColor))
{
hslColor = (HslColor)rgbColor;
}
else if (HslColor.TryParse(value, out hslColor))
{
rgbColor = (RgbColor)hslColor;
}
else
{
return(NilValue.Empty);
}
return(arguments.At(0).ToStringValue() switch
{
"alpha" => new StringValue(rgbColor.A.ToString()),
"red" => new StringValue(rgbColor.R.ToString()),
"green" => new StringValue(rgbColor.G.ToString()),
"blue" => new StringValue(rgbColor.B.ToString()),
"hue" => new StringValue(hslColor.H.ToString()),
"saturation" => new StringValue(Convert.ToInt32(hslColor.S * 100.0).ToString()),
"lightness" => new StringValue(Convert.ToInt32(hslColor.L * 100.0).ToString()),
_ => NilValue.Empty,
});
public void TryParse()
{
foreach (HtmlColorSample sample in HtmlColorSamples.All)
{
Assert.AreEqual(true, RgbColor.TryParse(sample.Hex, out RgbColor color1));
Assert.AreEqual(sample.Rgb.Css, color1.ToCss(), sample.Name);
}
foreach (HtmlColorSample sample in HtmlColorSamples.All)
{
Assert.AreEqual(false, RgbColor.TryParse(sample.Name, out RgbColor _));
}
}
public static ValueTask <FluidValue> ToHsl(FluidValue input, FilterArguments arguments, TemplateContext context)
{
var value = input.ToStringValue();
if (HexColor.TryParse(value, out HexColor hexColor))
{
var hslColor = (HslColor)hexColor;
return(new StringValue(hslColor.ToString()));
}
else if (RgbColor.TryParse(value, out RgbColor rgbColor))
{
var hslColor = (HslColor)rgbColor;
return(new StringValue(hslColor.ToString()));
}
else
{
return(NilValue.Empty);
}
}