public static ColorRgb ParseWebColor(string webcolor)
{
var c = ColorRgb.TryParseWebColor(webcolor);
if (!c.HasValue)
{
string s = string.Format("Failed to parse color string \"{0}\"", webcolor);
throw new System.FormatException(s);
}
return(c.Value);
}
private bool Equals(ColorRgb other)
{
return(this._r == other._r && this._g == other._g && this._b == other._b);
}
public string ToWebColorString()
{
return(ColorRgb.ToWebColorString(this._r, this._g, this._b));
}
public ColorRgb(uint rgb)
{
ColorRgb.GetRgbBytes(rgb, out this._r, out this._g, out this._b);
}
public static ColorRgb?TryParseWebColor(string webcolor)
{
// fail if string is null
if (webcolor == null)
{
return(null);
}
// fail if string is empty
if (webcolor.Length < 1)
{
return(null);
}
// clean any leading or trailing whitespace
webcolor = webcolor.Trim();
// fail if string is empty
if (webcolor.Length < 1)
{
return(null);
}
// strip leading # if it is there
while (webcolor.StartsWith("#"))
{
webcolor = webcolor.Substring(1);
}
// clean any leading or trailing whitespace
webcolor = webcolor.Trim();
// fail if string is empty
if (webcolor.Length < 1)
{
return(null);
}
// fail if string doesn't have exactly 6 digits
if (webcolor.Length != 6)
{
return(null);
}
int current_color;
bool result = int.TryParse(webcolor, NumberStyles.HexNumber, null, out current_color);
if (!result)
{
// fail if parsing didn't work
return(null);
}
// at this point parsing worked
// the integer value is converted directly to an rgb value
var the_color = new ColorRgb(current_color);
return(the_color);
}