public static HexColor Contrast(HexColor color)
{
Color sc = (Color)color;
float yiq = ((sc.R * 299) + (sc.G * 587) + (sc.B * 114)) / 1000;
return((yiq >= 128) ? Black : White);
}
public virtual void Add(HexColor color)
{
Expect.IsTrue(IsValidHexColor(color.Hex));
if (!_colorsByName.ContainsKey(color.Name))
{
_colorsByName.Add(color.Name, color);
}
}
public void Set(HexColor color)
{
Expect.IsTrue(IsValidHexColor(color.Hex));
if (!_colorsByName.ContainsKey(color.Name))
{
_colorsByName.Add(color.Name, color);
}
else
{
_colorsByName[color.Name] = color;
}
}
public void Set(string colorName, string hexColor)
{
HexColor color = new HexColor(colorName, hexColor);
Set(color);
}
/// <summary>
/// Adds the specified color if one with the same name
/// has not already been added.
/// </summary>
/// <param name="colorName"></param>
/// <param name="hexColor"></param>
public void Add(string colorName, string hexColor)
{
HexColor color = new HexColor(colorName, hexColor);
Add(color);
}