void StringToARGB(string value, byte alpha, byte red, byte green, byte blue)
{
Colorer.StringToARGB(value, out var alphaOut, out var redOut, out var greenOut, out var blueOut);
Assert.AreEqual(alpha, alphaOut);
Assert.AreEqual(red, redOut);
Assert.AreEqual(green, greenOut);
Assert.AreEqual(blue, blueOut);
}
static string OverlayColor(string color1, string color2)
{
Colorer.StringToARGB(color1, out byte alpha1, out byte red1, out byte green1, out byte blue1);
Colorer.StringToARGB(color2, out byte alpha2, out byte red2, out byte green2, out byte blue2);
red1 = (byte)((red1 * alpha1 / 255) + (red2 * alpha2 * (255 - alpha1) / (255 * 255)));
green1 = (byte)((green1 * alpha1 / 255) + (green2 * alpha2 * (255 - alpha1) / (255 * 255)));
blue1 = (byte)((blue1 * alpha1 / 255) + (blue2 * alpha2 * (255 - alpha1) / (255 * 255)));
alpha1 = (byte)(alpha1 + (alpha2 * (255 - alpha1) / 255));
return(Colorer.ARGBToString(alpha1, red1, green1, blue1));
}
static string AddColor(string color1, string color2)
{
Colorer.StringToARGB(color1, out var alpha1, out var red1, out var green1, out var blue1);
Colorer.StringToARGB(color2, out var alpha2, out var red2, out var green2, out var blue2);
alpha1 = (byte)Math.Max(0, Math.Min(alpha1 + alpha2, 255));
red1 = (byte)Math.Max(0, Math.Min(red1 + red2, 255));
green1 = (byte)Math.Max(0, Math.Min(green1 + green2, 255));
blue1 = (byte)Math.Max(0, Math.Min(blue1 + blue2, 255));
return(Colorer.ARGBToString(alpha1, red1, green1, blue1));
}
ImageGrabColorDialog(string color)
{
InitializeComponent();
try
{
Colorer.StringToARGB(color, out var alpha, out var red, out var green, out var blue);
Alpha = alpha;
Red = red;
Green = green;
Blue = blue;
}
catch { Alpha = Red = Green = Blue = 255; }
}
static string AdjustColor(string color, double multiplier, bool doAlpha, bool doRed, bool doGreen, bool doBlue)
{
Colorer.StringToARGB(color, out var alpha, out var red, out var green, out var blue);
if (doAlpha)
{
alpha = (byte)Math.Max(0, Math.Min((int)(alpha * multiplier + 0.5), 255));
}
if (doRed)
{
red = (byte)Math.Max(0, Math.Min((int)(red * multiplier + 0.5), 255));
}
if (doGreen)
{
green = (byte)Math.Max(0, Math.Min((int)(green * multiplier + 0.5), 255));
}
if (doBlue)
{
blue = (byte)Math.Max(0, Math.Min((int)(blue * multiplier + 0.5), 255));
}
return(Colorer.ARGBToString(alpha, red, green, blue));
}
public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
{
Colorer.StringToARGB(value as string, out byte alpha, out byte red, out byte green, out byte blue);
return(new object[] { alpha, red, green, blue });
}