public static void Test()
{
bool success;
StringBuilder profileName = new StringBuilder(256);
uint size = (uint)profileName.Capacity * 2;
success = GetStandardColorSpaceProfile(0, LogicalColorSpace.sRGB, profileName, ref size);
ProfileFilename sRGBFilename = new ProfileFilename(profileName.ToString());
IntPtr hSRGBProfile = OpenColorProfile(sRGBFilename, ProfileRead, FileShare.Read, CreateDisposition.OpenExisting);
ProfileFilename isoCoatedFilename = new ProfileFilename(@"C:\Users\me\Documents\ISOcoated_v2_300_eci.icc");
IntPtr hIsoCoatedProfile = OpenColorProfile(isoCoatedFilename, ProfileRead, FileShare.Read, CreateDisposition.OpenExisting);
IntPtr[] profiles = new IntPtr[] { hSRGBProfile, hIsoCoatedProfile };
uint[] intents = new uint[] { IntentPerceptual };
IntPtr transform = CreateMultiProfileTransform(profiles, 2, intents, 1, ColorTransformMode.BestMode, IndexDontCare);
RGBColor[] rgbColors = new RGBColor[1];
rgbColors[0] = new RGBColor();
CMYKColor[] cmykColors = new CMYKColor[1];
cmykColors[0] = new CMYKColor();
rgbColors[0].red = 30204;
rgbColors[0].green = 4420;
rgbColors[0].blue = 60300;
success = TranslateColors(transform, rgbColors, 1, ColorType.RGB, cmykColors, ColorType.CMYK);
success = DeleteColorTransform(transform);
success = CloseColorProfile(hSRGBProfile);
success = CloseColorProfile(hIsoCoatedProfile);
}
internal static ICmyk TranslateColor(IRgb rgb, Uri cmykProfile)
{
var profileName = new StringBuilder(256);
var size = (uint)profileName.Capacity * 2;
GetStandardColorSpaceProfile(0, LogicalColorSpace.SRgb, profileName, ref size);
var rgbFilename = new ProfileFilename(profileName.ToString());
return(TranslateColor(rgb, cmykProfile, new Uri(rgbFilename.profileData)));
}
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 static extern IntPtr OpenColorProfile(
[MarshalAs(UnmanagedType.LPStruct)] ProfileFilename profile,
uint desiredAccess,
FileShare shareMode,
CreateDisposition creationMode);
