107 lines
3.7 KiB
C#
107 lines
3.7 KiB
C#
using SixLabors.ImageSharp;
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using SixLabors.ImageSharp.Formats.Png;
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using System;
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using System.IO;
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using System.Runtime.InteropServices;
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namespace WindowsConfigApp
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{
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internal static partial class FolderIcon
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{
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// https://stackoverflow.com/a/21389253
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public static byte[] ToIcon(this Image img)
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{
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using var ms = new MemoryStream();
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using var bw = new BinaryWriter(ms);
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// Header
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bw.Write((short)0); // 0-1 : reserved
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bw.Write((short)1); // 2-3 : 1=ico, 2=cur
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bw.Write((short)1); // 4-5 : number of images
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// Image directory
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var w = img.Width;
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if (w >= 256) w = 0;
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bw.Write((byte)w); // 0 : width of image
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var h = img.Height;
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if (h >= 256) h = 0;
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bw.Write((byte)h); // 1 : height of image
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bw.Write((byte)0); // 2 : number of colors in palette
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bw.Write((byte)0); // 3 : reserved
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bw.Write((short)0); // 4 : number of color planes
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bw.Write((short)0); // 6 : bits per pixel
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var sizeHere = ms.Position;
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bw.Write((int)0); // 8 : image size
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var start = (int)ms.Position + 4;
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bw.Write(start); // 12: offset of image data
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// Image data
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img.Save(ms, new PngEncoder());
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var imageSize = (int)ms.Position - start;
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ms.Seek(sizeHere, SeekOrigin.Begin);
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bw.Write(imageSize);
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ms.Seek(0, SeekOrigin.Begin);
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// And load it
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return ms.ToArray();
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}
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public static void DeleteIcon(this DirectoryInfo directoryInfo) => DeleteIcon(directoryInfo.FullName);
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public static void DeleteIcon(string dir)
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{
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string[] array = new string[3] { "desktop.ini", "Icon.ico", ".hidden" };
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foreach (string path in array)
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{
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string text = Path.Combine(dir, path);
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if (File.Exists(text))
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{
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File.SetAttributes(text, File.GetAttributes(text) | FileAttributes.Normal);
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new FileInfo(text).IsReadOnly = false;
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File.Delete(text);
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}
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}
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refresh();
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}
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// https://github.com/dimuththarindu/FIC-Folder-Icon-Changer/blob/master/project/FIC/Classes/IconCustomizer.cs
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public static void SetIcon(this DirectoryInfo directoryInfo, string icoPath, string folderType)
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=> SetIcon(directoryInfo.FullName, icoPath, folderType);
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public static void SetIcon(string dir, string icoPath, string folderType)
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{
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var desktop_ini = Path.Combine(dir, "desktop.ini");
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var Icon_ico = Path.Combine(dir, "Icon.ico");
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var hidden = Path.Combine(dir, ".hidden");
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//deleting existing files
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DeleteIcon(dir);
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//copying Icon file //overwriting
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File.Copy(icoPath, Icon_ico, true);
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//writing configuration file
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string[] desktopLines = { "[.ShellClassInfo]", "IconResource=Icon.ico,0", "[ViewState]", "Mode=", "Vid=", $"FolderType={folderType}" };
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File.WriteAllLines(desktop_ini, desktopLines);
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//configure file 2
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string[] hiddenLines = { "desktop.ini", "Icon.ico" };
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File.WriteAllLines(hidden, hiddenLines);
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//making system files
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File.SetAttributes(desktop_ini, File.GetAttributes(desktop_ini) | FileAttributes.Hidden | FileAttributes.System | FileAttributes.ReadOnly);
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File.SetAttributes(Icon_ico, File.GetAttributes(Icon_ico) | FileAttributes.Hidden | FileAttributes.System | FileAttributes.ReadOnly);
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File.SetAttributes(hidden, File.GetAttributes(hidden) | FileAttributes.Hidden | FileAttributes.System | FileAttributes.ReadOnly);
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// this strangely completes the process. also hides these 3 hidden system files, even if "show hidden items" is checked
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File.SetAttributes(dir, File.GetAttributes(dir) | FileAttributes.ReadOnly);
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refresh();
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}
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private static void refresh() => SHChangeNotify(0x08000000, 0x0000, 0, 0); //SHCNE_ASSOCCHANGED SHCNF_IDLIST
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[DllImport("shell32.dll", SetLastError = true)]
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private static extern void SHChangeNotify(int wEventId, int uFlags, nint dwItem1, nint dwItem2);
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}
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}
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