312 lines
12 KiB
C#
312 lines
12 KiB
C#
using HPPH;
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using ImageMagick;
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using ImageMagick.Formats;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.Text;
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namespace XPrint.Image.Tools
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{
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public class CmykImageTool
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{
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private static XmpProfile? _xmpProfile = null;
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static CmykImageTool()
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{
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string channelName = "White";
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// 构建包含 Adobe 标准命名空间的 XML
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var xml = $@"
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<x:xmpmeta>
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<rdf:RDF>
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<rdf:Description rdf:about=''>
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<photoshop:ChannelNames>
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<rdf:Bag>
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<rdf:li>Alpha</rdf:li>
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<rdf:li>${channelName}</rdf:li>
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</rdf:Bag>
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</photoshop:ChannelNames>
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</rdf:Description>
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</rdf:RDF>
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</x:xmpmeta>;";
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var data = Encoding.UTF8.GetBytes(xml);
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_xmpProfile = new XmpProfile(data);
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}
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public static bool IsCmykImage(string imagePath)
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{
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using (var image = new MagickImage(imagePath))
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{
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// 检查颜色空间是否为 CMYK
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return image.ColorSpace == ColorSpace.CMYK;
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}
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}
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/// <summary>
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/// 分色接口
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/// </summary>
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/// <param name="inputPath">输入图片路径</param>
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/// <param name="outputPath">输出图片路径</param>
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/// <param name="iccProfileName">icc名称</param>
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/// <param name="iccProfilePath">icc文件路径</param>
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public static void SplitColor(string inputPath, string outputPath, string iccProfilePath = "")
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{
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using (var image = new MagickImage(inputPath))
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{
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// 配置大端字节序
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var writeSettings = new TiffWriteDefines();
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writeSettings.Endian = Endian.MSB;//大端模式，兼容性好些
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image.MetaChannelCount = 1;
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//if (!image.HasAlpha)
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//{
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// image.Alpha(AlphaOption.On);
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//}
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//var profileBim = image.Get8BimProfile();
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//if (profileBim != null)
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//{
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// var data = profileBim.ToByteArray();
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// File.WriteAllBytes(@"D:\8bim", data);
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//}
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//if (!string.IsNullOrWhiteSpace(iccProfileName) && !string.IsNullOrWhiteSpace(iccProfilePath))
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//{
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// // 加载ICC配置文件
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// var profile = new ColorProfile(File.ReadAllBytes(iccProfilePath));
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// image.SetProfile(profile);
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//}
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//else
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//{
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// var profile = new ExifProfile();
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// profile.SetValue(ExifTag.Copyright, "Anole");
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// profile.SetValue(ExifTag.ImageDescription, "");
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// image.SetProfile(profile);
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//}
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//var value5 = profileBim.Values.ElementAt(5);
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//profileBim.Values.Append(new EightBimValue { });
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//foreach (var p in pro?.Values!)
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//{
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// Console.WriteLine(p.Name);
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//}
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//Console.WriteLine("ICC配置文件已成功应用");
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//image.Comment = """
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// <?xml version="1.0" encoding="utf-16"?>
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// <ChannelNames xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
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// <Channel Index="0" Name="C" />
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// <Channel Index="1" Name="M" />
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// <Channel Index="2" Name="Y" />
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// <Channel Index="3" Name="K" />
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// <Channel Index="4" Name="A" />
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// <Channel Index="5" Name="W" />
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// </ChannelNames>
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// """;
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// 添加输入和输出配置
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image.SetProfile(ColorProfile.ColorMatchRGB);
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//image.SetProfile(new ColorProfile(@"D:\sRGB2014.icc"));
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//image.SetProfile(new ColorProfile(@"D:\JapanColor2001Coated.icc"));
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if (!string.IsNullOrWhiteSpace(iccProfilePath))
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{
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// 加载ICC配置文件
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var profile = new ColorProfile(iccProfilePath);
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//var icc = imageKele.GetProfile("icc")!;
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image.SetProfile(profile);
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}
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else
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{
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image.SetProfile(ColorProfile.USWebCoatedSWOP);
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}
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// 确保图像为CMYK模式
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if (image.ColorSpace != ColorSpace.CMYK)
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{
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image.ColorSpace = ColorSpace.CMYK;
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}
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var channels = image.Channels;
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ushort[] area;
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var pixels = image.GetPixels();
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bool hasAlpha = image.HasAlpha;
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if (hasAlpha)
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{
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image.Alpha(AlphaOption.On);
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image.MetaChannelCount = 0;
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var areaAlpha = pixels.GetArea(0, 0, image.Width, image.Height)!;
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image.Alpha(AlphaOption.Off);
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image.MetaChannelCount = 1;
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area = pixels.GetArea(0, 0, image.Width, image.Height)!;
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// 遍历每个像素，根据Alpha值设置White通道
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for (int i = 0; i < areaAlpha.Length; i += 5)
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{
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// 获取原始图像的Alpha值
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ushort alpha = areaAlpha[i + 4];
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var c = area[i];
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var m = area[i + 1];
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var y = area[i + 2];
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var k = area[i + 3];
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if (c > 0 || m > 0 || y > 0 || k > 0)
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{
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// 根据Alpha值设置White通道：透明区域(Alpha=0)设为黑色，不透明区域设为白色
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ushort whiteValue = (ushort)(alpha == 0 ? 0 : 65535);
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area[i + 4] = whiteValue;
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}
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else
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{
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area[i + 4] = 0;
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}
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}
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}
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else
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{
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image.Alpha(AlphaOption.Off);
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area = pixels.GetArea(0, 0, image.Width, image.Height)!;
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// 遍历每个像素，根据Alpha值设置White通道
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for (int i = 0; i < area.Length; i += 5)
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{
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var c = area[i];
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var m = area[i + 1];
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var y = area[i + 2];
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var k = area[i + 3];
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if (c > 0 || m > 0 || y > 0 || k > 0)
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{
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area[i + 4] = 65535;
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}
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else
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{
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area[i + 4] = 0;
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}
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}
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}
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if (hasAlpha)
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{
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image.MetaChannelCount = 1;
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}
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pixels.SetPixels(area);
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//var channels = image.Channels;
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//whiteChannel.Composite(image, CompositeOperator.Copy, Channels.CMYK);
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//if (!string.IsNullOrWhiteSpace(iccProfileName) && !string.IsNullOrWhiteSpace(iccProfilePath))
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//{
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// // 加载ICC配置文件
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// var profile = new ColorProfile(File.ReadAllBytes(iccProfilePath));
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// image.SetProfile(profile);
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//}
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//image.SetProfile(ColorProfile.USWebCoatedSWOP);
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//var bimProfile = image.Get8BimProfile();
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string bimFileName = "8bim";
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//if (hasAlpha)
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//{
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// bimFileName = "8bim_alpha";
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//}
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var bimData = File.ReadAllBytes(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, $"assets/{bimFileName}"));
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var profileBim = new EightBimProfile(image, bimData);
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//var profileBim = image.Get8BimProfile()!;
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//profileBim.GetExifProfile()?.RemoveThumbnail();
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//File.WriteAllBytes(@$"D:\{bimFileName}", profileBim.ToByteArray());
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//if (bimProfile != null)
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//{
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// var exifProfile = bimProfile.GetExifProfile();
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// var xmpProfile = bimProfile.GetXmpProfile();
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// var iptcProfile = bimProfile.GetIptcProfile();
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// profileBim.SetExifProfile(exifProfile);
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// profileBim.SetIptcProfile(iptcProfile);
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// profileBim.SetXmpProfile(xmpProfile);
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//}
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//image.Alpha(AlphaOption.Remove);
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profileBim.SetExifProfile(image.GetExifProfile());
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profileBim.SetIptcProfile(image.GetIptcProfile());
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profileBim.SetXmpProfile(image.GetXmpProfile());
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image.SetProfile(profileBim);
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profileBim.GetExifProfile()?.CreateThumbnail();
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//image.Compose = CompositeOperator.Overlay;
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image.Settings.Compression = CompressionMethod.LZW;
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image.SetCompression(CompressionMethod.LZW);//LZW压缩避免竖线问题
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//writeSettings.Alpha = TiffAlpha.Associated;
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// 保存
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image.Write(outputPath);
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//var channelNames = new Dictionary<int, string>
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//{
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// { 0, "C" }, // 假设通道索引1对应红色
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// { 1, "M" },
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// { 2, "Y" },
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// { 3, "K" },
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// { 4, "A" },
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// { 5, "W" }
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//};
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//TiffModifier.RenameCustomChannels(@"D:\2.tiff", Path.Combine(Path.GetDirectoryName(outputPath)!, "3.tif"), channelNames);
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// 创建包含 4 个自定义通道的图像
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//using (System.Drawing.Image imageA = new Bitmap(new MemoryStream(image.ToByteArray())))
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//{
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// var items = imageA.PropertyItems;
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//}
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pixels.Dispose();
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}
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}
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//private static string AddCustomXmpChannelName(string xmpXml, string channelName)
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//{
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// // 注意：此方法需要根据实际 XMP 结构和命名空间调整
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// // 示例：添加自定义命名空间 "mychannel"
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// if (!xmpXml.Contains("xmlns:mychannel"))
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// {
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// xmpXml = xmpXml.Replace("<rdf:RDF",
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// "<rdf:RDF xmlns:mychannel=\"http://example.com/channel/\"");
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// }
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// // 添加或更新 ChannelName 属性
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// string channelProperty = $"<mychannel:ChannelName>{channelName}</mychannel:ChannelName>";
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// int insertPos = xmpXml.IndexOf("</rdf:RDF>");
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// if (insertPos > 0)
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// {
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// xmpXml = xmpXml.Insert(insertPos, channelProperty);
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// }
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// return xmpXml;
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//}
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//public static void GenerateMultiPageCmykTiff(MagickImage[] imagePages, string outputPath)
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//{
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// using (var images = new MagickImageCollection())
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// {
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// for (int i = 0; i < imagePages.Length; i++)
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// {
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// //设置dpi
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// //imagePages[i].Density = new Density(300.00, 300.00);
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// images.Add(imagePages[i]);
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// }
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// // 配置大端字节序
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// var writeSettings = new WriteTiffBigEndianDefines();
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// // 保存多页
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// images.Write(outputPath, writeSettings);
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// }
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//}
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}
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}
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