internal static ICmyk TranslateColor(IRgb rgb, Uri cmykProfile, Uri rgbProfile)
{
const double dividend = 65535;
var profileName = new StringBuilder(256);
var size = (uint)profileName.Capacity * 2;
ProfileFilename sRgbFilename;
if (rgbProfile == null)
{
GetStandardColorSpaceProfile(0, LogicalColorSpace.sRgb, profileName, ref size);
sRgbFilename = new ProfileFilename(profileName.ToString());
}
else
{
sRgbFilename = new ProfileFilename(rgbProfile.LocalPath);
}
var hSRgbProfile = OpenColorProfile(sRgbFilename, ProfileRead, FileShare.Read,
CreateDisposition.OpenExisting);
var isoCoatedFilename = new ProfileFilename(cmykProfile.LocalPath);
var hIsoCoatedProfile = OpenColorProfile(isoCoatedFilename, ProfileRead, FileShare.Read,
CreateDisposition.OpenExisting);
var profiles = new[] { hSRgbProfile, hIsoCoatedProfile };
var intents = new[] { IntentPerceptual };
var transform = CreateMultiProfileTransform(profiles, 2, intents, 1, ColorTransformMode.BestMode,
IndexDontCare);
var rgbColors = new RgbColor[1];
rgbColors[0] = new RgbColor();
var cmykColors = new CmykColor[1];
cmykColors[0] = new CmykColor();
rgbColors[0].red = (ushort)(rgb.R * dividend / 255.0);
rgbColors[0].green = (ushort)(rgb.G * dividend / 255.0);
rgbColors[0].blue = (ushort)(rgb.B * dividend / 255.0);
TranslateColors(transform, rgbColors, 1, ColorType.Rgb, cmykColors, ColorType.CMYK);
DeleteColorTransform(transform);
CloseColorProfile(hSRgbProfile);
CloseColorProfile(hIsoCoatedProfile);
return(new Cmyk
{
C = cmykColors[0].cyan / dividend,
M = cmykColors[0].magenta / dividend,
Y = cmykColors[0].yellow / dividend,
K = cmykColors[0].black / dividend
});
}
private void SetRgbToCmyk()
{
pb1.BackColor = Color.FromArgb(trbRed.Value, trbGreen.Value, trbBlue.Value);
Converter cnv = new Converter();
CmykColor cm = cnv.rgbToCmyk(trbRed.Value, trbGreen.Value, trbBlue.Value);
trbCyan.Value = cm.c;
trbMagenta.Value = cm.m;
trbYellow.Value = cm.y;
trbKey.Value = cm.k;
}
private void SetHlsToCmyk()
{
Converter preCnv = new Converter();
RgbColor rc = Converter.HlsToRgb(trbHue.Value, trbLight.Value, trbSaturation.Value);
pb1.BackColor = Color.FromArgb(rc.r, rc.g, rc.b);
Converter cnv = new Converter();
CmykColor cm = cnv.rgbToCmyk(rc.r, rc.g, rc.b);
trbCyan.Value = cm.c;
trbMagenta.Value = cm.m;
trbYellow.Value = cm.y;
trbKey.Value = cm.k;
}
private void Button1_Click(object sender, EventArgs e)
{
if (colorDialog1.ShowDialog() == DialogResult.Cancel)
{
return;
}
Converter preCnv = new Converter();
CmykColor cm = preCnv.rgbToCmyk(colorDialog1.Color.R, colorDialog1.Color.G, colorDialog1.Color.B);
pb1.BackColor = colorDialog1.Color;
trbCyan.Value = cm.c;
trbMagenta.Value = cm.m;
trbYellow.Value = cm.y;
trbKey.Value = cm.k;
SetCmykToHls();
}