public ColorRgb(ColorRgb32Bit color)
{
ColorRgb temp = FromColor(color);
this._alpha = temp._alpha;
this._r = temp._r;
this._g = temp._g;
this._b = temp._b;
}
private static ColorRgb FromColor(ColorRgb32Bit color)
{
ColorRgb c = new ColorRgb(color.Alpha / 255.0, color.R / 255.0, color.G / 255.0, color.B / 255.0);
return(c);
}
/// <summary>
///
/// </summary>
/// <example>
/// Sample usage:
///
/// System.Drawing.Color c;
/// bool result = TryParseRGBWebColorString("#ffffff", ref c);
/// if (result)
/// {
/// //it was correctly parsed
/// }
/// else
/// {
/// //it was not correctly parsed
/// }
///
/// </example>
/// <param name="webcolor"></param>
///<returns></returns>
public static ColorRgb32Bit?TryParseWebColorString(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 (this means alpha was not provided)
if (webcolor.Length != 6)
{
return(null);
}
int currentColor = 0;
bool result = System.Int32.TryParse(webcolor, System.Globalization.NumberStyles.HexNumber, null, out currentColor);
if (webcolor.Length == 6)
{
// only six digits were given so add alpha
currentColor = (int)(((uint)currentColor) | ((uint)0xff000000));
}
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
ColorRgb32Bit theColor = new ColorRgb32Bit(currentColor);
return(theColor);
}
public ColorRgb32Bit(byte alpha, ColorRgb32Bit c) :
this(alpha, c.R, c.G, c.B)
{
}
private bool Equals(ColorRgb32Bit other)
{
return(this._alpha == other._alpha && this._r == other._r && this._g == other._g && this._b == other._b);
}
