AppliStation/AppliStation.Util/GUIUtils.cs

   1 using System;\r
   2 using System.IO;\r
   3 using System.Runtime.InteropServices;\r
   4 using System.Drawing;\r
   5 using System.Drawing.Imaging;\r
   6 using NaGet.Packages;\r
   7 using NaGet.Packages.Install;\r
   8 \r
   9 namespace AppliStation.Util\r
  10 {\r
  11         /// <summary>\r
  12         /// GUIに関する雑多な関数\r
  13         /// </summary>\r
  14         public sealed class GUIUtils\r
  15         {\r
  16                 #region ExtraIcon関連\r
  17                 \r
  18                 [DllImport("shell32.dll")]\r
  19                 private static extern IntPtr ExtractIcon(IntPtr hInst, string lpszExeFileName, int nIconIndex);\r
  20                 \r
  21                 [DllImport("user32.dll", SetLastError=true)]\r
  22                 [return: MarshalAs(UnmanagedType.Bool)]\r
  23                 private static extern bool DestroyIcon(IntPtr hIcon);\r
  24                 \r
  25                 /// <summary>\r
  26                 /// アイコンファイル（実行ファイル・DLL）を開いてアイコンを作る\r
  27                 /// </summary>\r
  28                 /// <remarks>内部でコピーされるのでWin32APIのDestroyIconを使わないでいいが、やや遅い動作</remarks>\r
  29                 /// <param name="form">ハンドラ</param>\r
  30                 /// <param name="lpszExeFileName">対象ファイル</param>\r
  31                 /// <param name="nIconIndex">アイコンインデックス</param>\r
  32                 /// <returns>生成されたアイコン</returns>\r
  33                 public static Icon ExtractIcon(System.Windows.Forms.Form form, string lpszExeFileName, uint nIconIndex)\r
  34                 {\r
  35                         Icon ico = null;\r
  36                         \r
  37                         if (! File.Exists(lpszExeFileName)) {\r
  38                                 ico = Icon.ExtractAssociatedIcon(lpszExeFileName); // ExtractAssociatedIconに例外を吐いてもらう\r
  39                         } else {\r
  40                                 IntPtr hInst = (form != null)? form.Handle : IntPtr.Zero;\r
  41                                 IntPtr hIcon = IntPtr.Zero;\r
  42                                 \r
  43                                 try {\r
  44                                         hIcon = ExtractIcon(hInst, lpszExeFileName, (int) nIconIndex);\r
  45                                         if ((hIcon != IntPtr.Zero) && (hIcon.ToInt32() != 2)) {\r
  46                                                 ico = (Icon) Icon.FromHandle(hIcon).Clone();\r
  47                                                 DestroyIcon(hIcon);\r
  48                                         }\r
  49                                 } catch (System.Runtime.InteropServices.COMException) {\r
  50                                         // ExtraIconのP/Invoke失敗時用\r
  51                                 }\r
  52                         }\r
  53                         return ico;\r
  54                 }\r
  55                 \r
  56                 /// <summary>\r
  57                 /// アイコンファイル（実行ファイル・DLL）を開いてアイコンを作る\r
  58                 /// </summary>\r
  59                 /// <param name="form">ハンドラ</param>\r
  60                 /// <param name="lpszExeFileNameAndIndex">対象ファイルとアイコンインデックスの文字列表現</param>\r
  61                 /// <returns>生成されたアイコン。</returns>\r
  62                 public static Icon ExtractIcon(System.Windows.Forms.Form form, string lpszExeFileNameAndIndex)\r
  63                 {\r
  64                         int index = lpszExeFileNameAndIndex.LastIndexOf(',');\r
  65                         if (index >= 0) {\r
  66                                 uint nIconIndex = uint.Parse(lpszExeFileNameAndIndex.Substring(index+1));\r
  67                                 return ExtractIcon(form, lpszExeFileNameAndIndex.Substring(0, index), nIconIndex);\r
  68                         } else {\r
  69                                 return Icon.ExtractAssociatedIcon(lpszExeFileNameAndIndex);\r
  70                         }\r
  71                 }\r
  72                 \r
  73                 /// <summary>\r
  74                 /// シェルからフォルダアイコンを生成して返す\r
  75                 /// </summary>\r
  76                 /// <returns>フォルダアイコン</returns>\r
  77                 public static Icon GetShellIconForFolder()\r
  78                 {\r
  79                         // Vista以降ならば、SHGetStockIconInfo(SIID_FOLDER, SHGSI_ICON, &sInfo); をP/Invoke呼び出しするのが王道かと\r
  80                         string windir = Environment.GetEnvironmentVariable("windir");\r
  81                         return ExtractIcon(null, Path.Combine(windir, @"system32\shell32.dll"), 3);\r
  82                 }\r
  83                 \r
  84                 #endregion\r
  85                 \r
  86                 /// <summary>\r
  87                 /// パッケージに対応するアイコンを返す\r
  88                 /// </summary>\r
  89                 /// <param name="pkg">パッケージ</param>\r
  90                 /// <returns>対応するアイコン。検出できなかった場合はnull。</returns>\r
  91                 public static Icon GetIconForPackage(InstalledPackage pkg)\r
  92                 {\r
  93                         Icon ico = null;\r
  94                         string iconPath = pkg.UninstallInfo.IconPath;\r
  95                         if (! string.IsNullOrEmpty(iconPath)) {\r
  96                                 ico = ExtractIcon(null, iconPath);\r
  97                         } else if (pkg.Type == InstallerType.ARCHIVE) {\r
  98                                 string progGrp = Path.Combine(NaGet.Env.ArchiveProgramGroup, pkg.Name);\r
  99                                 if (Directory.Exists(progGrp)) {\r
 100                                         string[] lnkFiles = Directory.GetFiles(progGrp, "*.lnk");\r
 101                                         \r
 102                                         if (lnkFiles.Length >= 1) {\r
 103                                                 try {\r
 104                                                         using (NaGet.InteropServices.ShellLink link = new NaGet.InteropServices.ShellLink(lnkFiles[0])) {\r
 105                                                                 if (File.Exists(link.GetPath(0))) {\r
 106                                                                         ico = Icon.ExtractAssociatedIcon(link.GetPath(0));\r
 107                                                                 }\r
 108                                                         }\r
 109                                                 } catch (System.Runtime.InteropServices.COMException) {\r
 110                                                         // ShellLinkのオープンあるいは、リンク先解決に失敗した場合\r
 111                                                 }\r
 112                                         }\r
 113                                 }\r
 114                         }\r
 115                         return ico;\r
 116                 }\r
 117                 \r
 118                 /// <summary>\r
 119                 /// グレーアウトアイコンを作るための ImageAttributes を作って返す。\r
 120                 /// </summary>\r
 121                 /// <param name="alpha">透明度。(1.0が不透明、0.0が完全透明)</param>\r
 122                 /// <returns>生成されたImageAttributes</returns>\r
 123                 public static ImageAttributes GetImageAttributeToGrayOut(float alpha)\r
 124                 {\r
 125                         // RGB比率として、YIQカラーモデルの値を採用する\r
 126                         const float r = 0.298912f;\r
 127                         const float g = 0.586611f;\r
 128                         const float b = 0.114478f;\r
 129                         \r
 130                         ColorMatrix cm = new ColorMatrix(new float[][]{\r
 131                                 new float[]{r, r, r,     0, 0},\r
 132                                 new float[]{g, g, g,     0, 0},\r
 133                                 new float[]{b, b, b,     0, 0},\r
 134                                 new float[]{0, 0, 0, alpha, 0},\r
 135                                 new float[]{0, 0, 0,     0, 1},\r
 136                          });\r
 137                         ImageAttributes ia = new ImageAttributes();\r
 138                         ia.SetColorMatrix(cm);\r
 139                         \r
 140                         return ia;\r
 141                 }\r
 142                 \r
 143                 /// <summary>\r
 144                 /// 画像を指定領域の真中に描く\r
 145                 /// </summary>\r
 146                 /// <param name="g">描画対象のグラフィックス</param>\r
 147                 /// <param name="img">画像</param>\r
 148                 /// <param name="b">指定領域</param>\r
 149                 /// <param name="ia">ImageAttributes。nullでもかまわない</param>\r
 150                 public static void Graphics_DrawCenterImage(Graphics g, Image img, Rectangle b, ImageAttributes ia)\r
 151                 {\r
 152                         int x = b.Left + (b.Width  - img.Width ) / 2;\r
 153                         int y = b.Top  + (b.Height - img.Height) / 2;\r
 154                         \r
 155                         g.DrawImage(img,\r
 156                                     new Rectangle(x, y, img.Width, img.Height),\r
 157                                     0, 0, img.Width, img.Height,\r
 158                                     GraphicsUnit.Pixel, ia);\r
 159                 }\r
 160 \r
 161         }\r
 162 }\r