// Supported inputs
// HEX #rgb, #argb, #rrggbb, #aarrggbb
// RGB rgb(255,0,0), rgb(100%,0%,0%) values in range 0-255 or 0%-100%
// RGBA rgba(255, 0, 0, 0.8), rgba(100%, 0%, 0%, 0.8) opacity is 0.0-1.0
// HSL hsl(120, 100%, 50%) h is 0-360, s and l are 0%-100%
// HSLA hsla(120, 100%, 50%, .8) opacity is 0.0-1.0
// HSV hsv(120, 100%, 50%) h is 0-360, s and v are 0%-100%
// HSVA hsva(120, 100%, 50%, .8) opacity is 0.0-1.0
// Predefined color case insensitive
public override object ConvertFromInvariantString(string value)
{
if (value != null)
{
value = value.Trim();
if (value.StartsWith("#", StringComparison.Ordinal))
{
return(Color.FromHex(value));
}
if (value.StartsWith("rgba", StringComparison.OrdinalIgnoreCase))
{
var op = value.IndexOf('(');
var cp = value.LastIndexOf(')');
if (op < 0 || cp < 0 || cp < op)
{
throw new InvalidOperationException($"Cannot convert \"{value}\" into {typeof(Color)}");
}
var quad = value.Substring(op + 1, cp - op - 1).Split(',');
if (quad.Length != 4)
{
throw new InvalidOperationException($"Cannot convert \"{value}\" into {typeof(Color)}");
}
var r = ParseColorValue(quad[0], 255, acceptPercent: true);
var g = ParseColorValue(quad[1], 255, acceptPercent: true);
var b = ParseColorValue(quad[2], 255, acceptPercent: true);
var a = ParseOpacity(quad[3]);
return(new Color(r, g, b, a));
}
if (value.StartsWith("rgb", StringComparison.OrdinalIgnoreCase))
{
var op = value.IndexOf('(');
var cp = value.LastIndexOf(')');
if (op < 0 || cp < 0 || cp < op)
{
throw new InvalidOperationException($"Cannot convert \"{value}\" into {typeof(Color)}");
}
var triplet = value.Substring(op + 1, cp - op - 1).Split(',');
if (triplet.Length != 3)
{
throw new InvalidOperationException($"Cannot convert \"{value}\" into {typeof(Color)}");
}
var r = ParseColorValue(triplet[0], 255, acceptPercent: true);
var g = ParseColorValue(triplet[1], 255, acceptPercent: true);
var b = ParseColorValue(triplet[2], 255, acceptPercent: true);
return(new Color(r, g, b));
}
if (value.StartsWith("hsla", StringComparison.OrdinalIgnoreCase))
{
var op = value.IndexOf('(');
var cp = value.LastIndexOf(')');
if (op < 0 || cp < 0 || cp < op)
{
throw new InvalidOperationException($"Cannot convert \"{value}\" into {typeof(Color)}");
}
var quad = value.Substring(op + 1, cp - op - 1).Split(',');
if (quad.Length != 4)
{
throw new InvalidOperationException($"Cannot convert \"{value}\" into {typeof(Color)}");
}
var h = ParseColorValue(quad[0], 360, acceptPercent: false);
var s = ParseColorValue(quad[1], 100, acceptPercent: true);
var l = ParseColorValue(quad[2], 100, acceptPercent: true);
var a = ParseOpacity(quad[3]);
return(Color.FromHsla(h, s, l, a));
}
if (value.StartsWith("hsl", StringComparison.OrdinalIgnoreCase))
{
var op = value.IndexOf('(');
var cp = value.LastIndexOf(')');
if (op < 0 || cp < 0 || cp < op)
{
throw new InvalidOperationException($"Cannot convert \"{value}\" into {typeof(Color)}");
}
var triplet = value.Substring(op + 1, cp - op - 1).Split(',');
if (triplet.Length != 3)
{
throw new InvalidOperationException($"Cannot convert \"{value}\" into {typeof(Color)}");
}
var h = ParseColorValue(triplet[0], 360, acceptPercent: false);
var s = ParseColorValue(triplet[1], 100, acceptPercent: true);
var l = ParseColorValue(triplet[2], 100, acceptPercent: true);
return(Color.FromHsla(h, s, l));
}
if (value.StartsWith("hsva", StringComparison.OrdinalIgnoreCase))
{
var op = value.IndexOf('(');
var cp = value.LastIndexOf(')');
if (op < 0 || cp < 0 || cp < op)
{
throw new InvalidOperationException($"Cannot convert \"{value}\" into {typeof(Color)}");
}
var quad = value.Substring(op + 1, cp - op - 1).Split(',');
if (quad.Length != 4)
{
throw new InvalidOperationException($"Cannot convert \"{value}\" into {typeof(Color)}");
}
var h = ParseColorValue(quad[0], 360, acceptPercent: false);
var s = ParseColorValue(quad[1], 100, acceptPercent: true);
var v = ParseColorValue(quad[2], 100, acceptPercent: true);
var a = ParseOpacity(quad[3]);
return(Color.FromHsva(h, s, v, a));
}
if (value.StartsWith("hsv", StringComparison.OrdinalIgnoreCase))
{
var op = value.IndexOf('(');
var cp = value.LastIndexOf(')');
if (op < 0 || cp < 0 || cp < op)
{
throw new InvalidOperationException($"Cannot convert \"{value}\" into {typeof(Color)}");
}
var triplet = value.Substring(op + 1, cp - op - 1).Split(',');
if (triplet.Length != 3)
{
throw new InvalidOperationException($"Cannot convert \"{value}\" into {typeof(Color)}");
}
var h = ParseColorValue(triplet[0], 360, acceptPercent: false);
var s = ParseColorValue(triplet[1], 100, acceptPercent: true);
var v = ParseColorValue(triplet[2], 100, acceptPercent: true);
return(Color.FromHsv(h, s, v));
}
string[] parts = value.Split('.');
if (parts.Length == 1 || (parts.Length == 2 && parts[0] == "Color"))
{
string color = parts[parts.Length - 1];
switch (color.ToLowerInvariant())
{
case "default":
return(Color.Default);
case "accent":
return(Color.Accent);
case "aliceblue":
return(Color.AliceBlue);
case "antiquewhite":
return(Color.AntiqueWhite);
case "aqua":
return(Color.Aqua);
case "aquamarine":
return(Color.Aquamarine);
case "azure":
return(Color.Azure);
case "beige":
return(Color.Beige);
case "bisque":
return(Color.Bisque);
case "black":
return(Color.Black);
case "blanchedalmond":
return(Color.BlanchedAlmond);
case "blue":
return(Color.Blue);
case "blueViolet":
return(Color.BlueViolet);
case "brown":
return(Color.Brown);
case "burlywood":
return(Color.BurlyWood);
case "cadetblue":
return(Color.CadetBlue);
case "chartreuse":
return(Color.Chartreuse);
case "chocolate":
return(Color.Chocolate);
case "coral":
return(Color.Coral);
case "cornflowerblue":
return(Color.CornflowerBlue);
case "cornsilk":
return(Color.Cornsilk);
case "crimson":
return(Color.Crimson);
case "cyan":
return(Color.Cyan);
case "darkblue":
return(Color.DarkBlue);
case "darkcyan":
return(Color.DarkCyan);
case "darkgoldenrod":
return(Color.DarkGoldenrod);
case "darkgray":
return(Color.DarkGray);
case "darkgreen":
return(Color.DarkGreen);
case "darkkhaki":
return(Color.DarkKhaki);
case "darkmagenta":
return(Color.DarkMagenta);
case "darkolivegreen":
return(Color.DarkOliveGreen);
case "darkorange":
return(Color.DarkOrange);
case "darkorchid":
return(Color.DarkOrchid);
case "darkred":
return(Color.DarkRed);
case "darksalmon":
return(Color.DarkSalmon);
case "darkseagreen":
return(Color.DarkSeaGreen);
case "darkslateblue":
return(Color.DarkSlateBlue);
case "darkslategray":
return(Color.DarkSlateGray);
case "darkturquoise":
return(Color.DarkTurquoise);
case "darkviolet":
return(Color.DarkViolet);
case "deeppink":
return(Color.DeepPink);
case "deepskyblue":
return(Color.DeepSkyBlue);
case "dimgray":
return(Color.DimGray);
case "dodgerblue":
return(Color.DodgerBlue);
case "firebrick":
return(Color.Firebrick);
case "floralwhite":
return(Color.FloralWhite);
case "forestgreen":
return(Color.ForestGreen);
case "fuchsia":
return(Color.Fuchsia);
case "gainsboro":
return(Color.Gainsboro);
case "ghostwhite":
return(Color.GhostWhite);
case "gold":
return(Color.Gold);
case "goldenrod":
return(Color.Goldenrod);
case "gray":
return(Color.Gray);
case "green":
return(Color.Green);
case "greenyellow":
return(Color.GreenYellow);
case "honeydew":
return(Color.Honeydew);
case "hotpink":
return(Color.HotPink);
case "indianred":
return(Color.IndianRed);
case "indigo":
return(Color.Indigo);
case "ivory":
return(Color.Ivory);
case "khaki":
return(Color.Khaki);
case "lavender":
return(Color.Lavender);
case "lavenderblush":
return(Color.LavenderBlush);
case "lawngreen":
return(Color.LawnGreen);
case "lemonchiffon":
return(Color.LemonChiffon);
case "lightblue":
return(Color.LightBlue);
case "lightcoral":
return(Color.LightCoral);
case "lightcyan":
return(Color.LightCyan);
case "lightgoldenrodyellow":
return(Color.LightGoldenrodYellow);
case "lightgrey":
case "lightgray":
return(Color.LightGray);
case "lightgreen":
return(Color.LightGreen);
case "lightpink":
return(Color.LightPink);
case "lightsalmon":
return(Color.LightSalmon);
case "lightseagreen":
return(Color.LightSeaGreen);
case "lightskyblue":
return(Color.LightSkyBlue);
case "lightslategray":
return(Color.LightSlateGray);
case "lightsteelblue":
return(Color.LightSteelBlue);
case "lightyellow":
return(Color.LightYellow);
case "lime":
return(Color.Lime);
case "limegreen":
return(Color.LimeGreen);
case "linen":
return(Color.Linen);
case "magenta":
return(Color.Magenta);
case "maroon":
return(Color.Maroon);
case "mediumaquamarine":
return(Color.MediumAquamarine);
case "mediumblue":
return(Color.MediumBlue);
case "mediumorchid":
return(Color.MediumOrchid);
case "mediumpurple":
return(Color.MediumPurple);
case "mediumseagreen":
return(Color.MediumSeaGreen);
case "mediumslateblue":
return(Color.MediumSlateBlue);
case "mediumspringgreen":
return(Color.MediumSpringGreen);
case "mediumturquoise":
return(Color.MediumTurquoise);
case "mediumvioletred":
return(Color.MediumVioletRed);
case "midnightblue":
return(Color.MidnightBlue);
case "mintcream":
return(Color.MintCream);
case "mistyrose":
return(Color.MistyRose);
case "moccasin":
return(Color.Moccasin);
case "navajowhite":
return(Color.NavajoWhite);
case "navy":
return(Color.Navy);
case "oldlace":
return(Color.OldLace);
case "olive":
return(Color.Olive);
case "olivedrab":
return(Color.OliveDrab);
case "orange":
return(Color.Orange);
case "orangered":
return(Color.OrangeRed);
case "orchid":
return(Color.Orchid);
case "palegoldenrod":
return(Color.PaleGoldenrod);
case "palegreen":
return(Color.PaleGreen);
case "paleturquoise":
return(Color.PaleTurquoise);
case "palevioletred":
return(Color.PaleVioletRed);
case "papayawhip":
return(Color.PapayaWhip);
case "peachpuff":
return(Color.PeachPuff);
case "peru":
return(Color.Peru);
case "pink":
return(Color.Pink);
case "plum":
return(Color.Plum);
case "powderblue":
return(Color.PowderBlue);
case "purple":
return(Color.Purple);
case "red":
return(Color.Red);
case "rosybrown":
return(Color.RosyBrown);
case "royalblue":
return(Color.RoyalBlue);
case "saddlebrown":
return(Color.SaddleBrown);
case "salmon":
return(Color.Salmon);
case "sandybrown":
return(Color.SandyBrown);
case "seagreen":
return(Color.SeaGreen);
case "seashell":
return(Color.SeaShell);
case "sienna":
return(Color.Sienna);
case "silver":
return(Color.Silver);
case "skyblue":
return(Color.SkyBlue);
case "slateblue":
return(Color.SlateBlue);
case "slategray":
return(Color.SlateGray);
case "snow":
return(Color.Snow);
case "springgreen":
return(Color.SpringGreen);
case "steelblue":
return(Color.SteelBlue);
case "tan":
return(Color.Tan);
case "teal":
return(Color.Teal);
case "thistle":
return(Color.Thistle);
case "tomato":
return(Color.Tomato);
case "transparent":
return(Color.Transparent);
case "turquoise":
return(Color.Turquoise);
case "violet":
return(Color.Violet);
case "wheat":
return(Color.Wheat);
case "white":
return(Color.White);
case "whitesmoke":
return(Color.WhiteSmoke);
case "yellow":
return(Color.Yellow);
case "yellowgreen":
return(Color.YellowGreen);
}
var field = typeof(Color).GetFields().FirstOrDefault(fi => fi.IsStatic && string.Equals(fi.Name, color, StringComparison.OrdinalIgnoreCase));
if (field != null)
{
return((Color)field.GetValue(null));
}
var property = typeof(Color).GetProperties().FirstOrDefault(pi => string.Equals(pi.Name, color, StringComparison.OrdinalIgnoreCase) && pi.CanRead && pi.GetMethod.IsStatic);
if (property != null)
{
return((Color)property.GetValue(null, null));
}
}
var namedColor = Device.GetNamedColor(value);
if (namedColor != default)
{
return(namedColor);
}
}
throw new InvalidOperationException($"Cannot convert \"{value}\" into {typeof(Color)}");
}
