423 lines
12 KiB
C#
423 lines
12 KiB
C#
using IWshRuntimeLibrary;
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.IO;
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using System.Runtime.InteropServices;
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using System.Windows.Media.Imaging;
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namespace GeekDesk.Util
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{
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public class FileIcon
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{
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private static List<string> GetBlurExts()
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{
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List<string> list = new List<string>();
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list.Add(".exe");
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list.Add(".cer");
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list.Add(".lnk");
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return list;
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}
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[DllImport("User32.dll")]
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public static extern int PrivateExtractIcons(
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string lpszFile, //文件名可以是exe,dll,ico,cur,ani,bmp
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int nIconIndex, //从第几个图标开始获取
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int cxIcon, //获取图标的尺寸x
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int cyIcon, //获取图标的尺寸y
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IntPtr[] phicon, //获取到的图标指针数组
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int[] piconid, //图标对应的资源编号
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int nIcons, //指定获取的图标数量，仅当文件类型为.exe 和 .dll时候可用
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int flags //标志，默认0就可以，具体可以看LoadImage函数
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);
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public static BitmapImage GetBitmapImage(string filePath)
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{
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Icon ico;
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//选中文件中的图标总数
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var iconTotalCount = PrivateExtractIcons(filePath, 0, 0, 0, null, null, 0, 0);
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//用于接收获取到的图标指针
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IntPtr[] hIcons = new IntPtr[iconTotalCount];
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//对应的图标id
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int[] ids = new int[iconTotalCount];
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//成功获取到的图标个数
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var successCount = PrivateExtractIcons(filePath, 0, 256, 256, hIcons, ids, iconTotalCount, 0);
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string ext = Path.GetExtension(filePath).ToLower();
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IntPtr ip = IntPtr.Zero;
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if (successCount > 0)
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{
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ip = hIcons[0];
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ico = Icon.FromHandle(ip);
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}
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else if (GetBlurExts().Contains(ext))
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{
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ico = Icon.ExtractAssociatedIcon(filePath);
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}
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else
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{
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ip = GetJumboIcon(GetIconIndex(filePath));
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ico = Icon.FromHandle(ip);
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}
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Bitmap bmp = ico.ToBitmap();
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MemoryStream strm = new MemoryStream();
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ImageCodecInfo myImageCodecInfo = GetEncoderInfo("image/png");
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Encoder myEncoder = Encoder.Quality;
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EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 75L);
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EncoderParameters myEncoderParameters = new EncoderParameters(1);
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myEncoderParameters.Param[0] = myEncoderParameter;
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bmp.Save(strm, myImageCodecInfo, myEncoderParameters);
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BitmapImage bmpImage = new BitmapImage();
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bmpImage.BeginInit();
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strm.Seek(0, SeekOrigin.Begin);
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bmpImage.StreamSource = strm;
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bmpImage.EndInit();
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if (ip != IntPtr.Zero)
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{
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Shell32.DestroyIcon(ip);
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}
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return bmpImage.Clone();
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}
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private static ImageCodecInfo GetEncoderInfo(String mimeType)
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{
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int j;
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ImageCodecInfo[] encoders;
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encoders = ImageCodecInfo.GetImageEncoders();
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for (j = 0; j < encoders.Length; ++j)
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{
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if (encoders[j].MimeType == mimeType)
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return encoders[j];
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}
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return null;
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}
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public static int GetIconIndex(string pszFile)
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{
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SHFILEINFO sfi = new SHFILEINFO();
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Shell32.SHGetFileInfo(pszFile
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, 0
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, ref sfi
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, (uint)System.Runtime.InteropServices.Marshal.SizeOf(sfi)
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, (uint)(SHGFI.SysIconIndex | SHGFI.LargeIcon | SHGFI.UseFileAttributes));
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return sfi.iIcon;
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}
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// 256*256
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public static IntPtr GetJumboIcon(int iImage)
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{
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IImageList spiml = null;
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Guid guil = new Guid(IID_IImageList);//or IID_IImageList
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Shell32.SHGetImageList(Shell32.SHIL_JUMBO, ref guil, ref spiml);
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IntPtr hIcon = IntPtr.Zero;
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spiml.GetIcon(iImage, Shell32.ILD_TRANSPARENT | Shell32.ILD_IMAGE, ref hIcon);
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return hIcon;
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}
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const string IID_IImageList = "46EB5926-582E-4017-9FDF-E8998DAA0950";
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const string IID_IImageList2 = "192B9D83-50FC-457B-90A0-2B82A8B5DAE1";
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public static class Shell32
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{
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public const int SHIL_LARGE = 0x0;
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public const int SHIL_SMALL = 0x1;
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public const int SHIL_EXTRALARGE = 0x2;
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public const int SHIL_SYSSMALL = 0x3;
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public const int SHIL_JUMBO = 0x4;
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public const int SHIL_LAST = 0x4;
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public const int ILD_TRANSPARENT = 0x00000001;
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public const int ILD_IMAGE = 0x00000020;
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[DllImport("shell32.dll", EntryPoint = "#727")]
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public extern static int SHGetImageList(int iImageList, ref Guid riid, ref IImageList ppv);
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[DllImport("user32.dll", EntryPoint = "DestroyIcon", SetLastError = true)]
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public static unsafe extern int DestroyIcon(IntPtr hIcon);
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[DllImport("shell32.dll")]
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public static extern uint SHGetIDListFromObject([MarshalAs(UnmanagedType.IUnknown)] object iUnknown, out IntPtr ppidl);
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[DllImport("Shell32.dll")]
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public static extern IntPtr SHGetFileInfo(
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string pszPath,
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uint dwFileAttributes,
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ref SHFILEINFO psfi,
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uint cbFileInfo,
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uint uFlags
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);
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}
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[Flags]
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enum SHGFI : uint
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{
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/// <summary>get icon</summary>
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Icon = 0x000000100,
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/// <summary>get display name</summary>
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DisplayName = 0x000000200,
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/// <summary>get type name</summary>
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TypeName = 0x000000400,
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/// <summary>get attributes</summary>
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Attributes = 0x000000800,
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/// <summary>get icon location</summary>
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IconLocation = 0x000001000,
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/// <summary>return exe type</summary>
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ExeType = 0x000002000,
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/// <summary>get system icon index</summary>
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SysIconIndex = 0x000004000,
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/// <summary>put a link overlay on icon</summary>
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LinkOverlay = 0x000008000,
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/// <summary>show icon in selected state</summary>
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Selected = 0x000010000,
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/// <summary>get only specified attributes</summary>
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Attr_Specified = 0x000020000,
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/// <summary>get large icon</summary>
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LargeIcon = 0x000000000,
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/// <summary>get small icon</summary>
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SmallIcon = 0x000000001,
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/// <summary>get open icon</summary>
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OpenIcon = 0x000000002,
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/// <summary>get shell size icon</summary>
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ShellIconSize = 0x000000004,
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/// <summary>pszPath is a pidl</summary>
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PIDL = 0x000000008,
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/// <summary>use passed dwFileAttribute</summary>
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UseFileAttributes = 0x000000010,
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/// <summary>apply the appropriate overlays</summary>
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AddOverlays = 0x000000020,
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/// <summary>Get the index of the overlay in the upper 8 bits of the iIcon</summary>
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OverlayIndex = 0x000000040,
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}
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[StructLayout(LayoutKind.Sequential)]
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public struct SHFILEINFO
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{
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public const int NAMESIZE = 80;
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public IntPtr hIcon;
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public int iIcon;
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public uint dwAttributes;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
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public string szDisplayName;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
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public string szTypeName;
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};
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[StructLayout(LayoutKind.Sequential)]
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public struct RECT
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{
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public int left, top, right, bottom;
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}
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[StructLayout(LayoutKind.Sequential)]
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public struct POINT
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{
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int x;
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int y;
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}
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[StructLayout(LayoutKind.Sequential)]
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public struct IMAGELISTDRAWPARAMS
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{
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public int cbSize;
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public IntPtr himl;
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public int i;
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public IntPtr hdcDst;
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public int x;
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public int y;
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public int cx;
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public int cy;
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public int xBitmap; // x offest from the upperleft of bitmap
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public int yBitmap; // y offset from the upperleft of bitmap
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public int rgbBk;
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public int rgbFg;
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public int fStyle;
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public int dwRop;
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public int fState;
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public int Frame;
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public int crEffect;
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}
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[StructLayout(LayoutKind.Sequential)]
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public struct IMAGEINFO
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{
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public IntPtr hbmImage;
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public IntPtr hbmMask;
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public int Unused1;
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public int Unused2;
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public RECT rcImage;
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}
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[ComImportAttribute()]
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[GuidAttribute("46EB5926-582E-4017-9FDF-E8998DAA0950")]
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[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
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public interface IImageList
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{
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[PreserveSig]
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int Add(
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IntPtr hbmImage,
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IntPtr hbmMask,
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ref int pi);
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[PreserveSig]
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int ReplaceIcon(
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int i,
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IntPtr hicon,
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ref int pi);
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[PreserveSig]
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int SetOverlayImage(
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int iImage,
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int iOverlay);
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[PreserveSig]
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int Replace(
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int i,
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IntPtr hbmImage,
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IntPtr hbmMask);
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[PreserveSig]
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int AddMasked(
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IntPtr hbmImage,
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int crMask,
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ref int pi);
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[PreserveSig]
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int Draw(
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ref IMAGELISTDRAWPARAMS pimldp);
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[PreserveSig]
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int Remove(int i);
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[PreserveSig]
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int GetIcon(
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int i,
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int flags,
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ref IntPtr picon);
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[PreserveSig]
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int GetImageInfo(
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int i,
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ref IMAGEINFO pImageInfo);
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[PreserveSig]
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int Copy(
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int iDst,
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IImageList punkSrc,
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int iSrc,
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int uFlags);
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[PreserveSig]
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int Merge(
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int i1,
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IImageList punk2,
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int i2,
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int dx,
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int dy,
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ref Guid riid,
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ref IntPtr ppv);
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[PreserveSig]
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int Clone(
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ref Guid riid,
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ref IntPtr ppv);
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[PreserveSig]
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int GetImageRect(
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int i,
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ref RECT prc);
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[PreserveSig]
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int GetIconSize(
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ref int cx,
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ref int cy);
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[PreserveSig]
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int SetIconSize(
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int cx,
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int cy);
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[PreserveSig]
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int GetImageCount(ref int pi);
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[PreserveSig]
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int SetImageCount(
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int uNewCount);
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[PreserveSig]
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int SetBkColor(
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int clrBk,
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ref int pclr);
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[PreserveSig]
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int GetBkColor(
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ref int pclr);
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[PreserveSig]
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int BeginDrag(
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int iTrack,
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int dxHotspot,
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int dyHotspot);
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[PreserveSig]
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int EndDrag();
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[PreserveSig]
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int DragEnter(
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IntPtr hwndLock,
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int x,
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int y);
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[PreserveSig]
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int DragLeave(
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IntPtr hwndLock);
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[PreserveSig]
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int DragMove(
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int x,
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int y);
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[PreserveSig]
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int SetDragCursorImage(
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ref IImageList punk,
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int iDrag,
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int dxHotspot,
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int dyHotspot);
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[PreserveSig]
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int DragShowNolock(
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int fShow);
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[PreserveSig]
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int GetDragImage(
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ref POINT ppt,
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ref POINT pptHotspot,
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ref Guid riid,
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ref IntPtr ppv);
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[PreserveSig]
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int GetItemFlags(
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int i,
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ref int dwFlags);
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[PreserveSig]
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int GetOverlayImage(
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int iOverlay,
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ref int piIndex);
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};
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}
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}
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