mcs/class/Managed.Windows.Forms/System.Windows.Forms/TrackBarRenderer.cs

   1 //\r
   2 // TrackBarRenderer.cs\r
   3 //\r
   4 // Permission is hereby granted, free of charge, to any person obtaining\r
   5 // a copy of this software and associated documentation files (the\r
   6 // "Software"), to deal in the Software without restriction, including\r
   7 // without limitation the rights to use, copy, modify, merge, publish,\r
   8 // distribute, sublicense, and/or sell copies of the Software, and to\r
   9 // permit persons to whom the Software is furnished to do so, subject to\r
  10 // the following conditions:\r
  11 // \r
  12 // The above copyright notice and this permission notice shall be\r
  13 // included in all copies or substantial portions of the Software.\r
  14 // \r
  15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,\r
  16 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\r
  17 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND\r
  18 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE\r
  19 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION\r
  20 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION\r
  21 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
  22 //\r
  23 // Copyright (c) 2006 Novell, Inc.\r
  24 //\r
  25 // Authors:\r
  26 //      Jonathan Pobst (monkey@jpobst.com)\r
  27 //\r
  28 \r
  29 #if NET_2_0\r
  30 using System.Drawing;\r
  31 using System.Windows.Forms.VisualStyles;\r
  32 \r
  33 namespace System.Windows.Forms\r
  34 {\r
  35         public sealed class TrackBarRenderer\r
  36         {\r
  37                 #region Private Constructor\r
  38                 private TrackBarRenderer () { }\r
  39                 #endregion\r
  40 \r
  41                 #region Public Static Methods\r
  42                 public static void DrawBottomPointingThumb(Graphics g, Rectangle bounds, TrackBarThumbState state)\r
  43                 {\r
  44                         if (!IsSupported)\r
  45                                 throw new InvalidOperationException ();\r
  46 \r
  47                         VisualStyleRenderer vsr;\r
  48 \r
  49                         switch (state) {\r
  50                                 case TrackBarThumbState.Disabled:\r
  51                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbBottom.Disabled);\r
  52                                         break;\r
  53                                 case TrackBarThumbState.Hot:\r
  54                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbBottom.Hot);\r
  55                                         break;\r
  56                                 case TrackBarThumbState.Normal:\r
  57                                 default:\r
  58                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbBottom.Normal);\r
  59                                         break;\r
  60                                 case TrackBarThumbState.Pressed:\r
  61                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbBottom.Pressed);\r
  62                                         break;\r
  63                         }\r
  64 \r
  65                         vsr.DrawBackground (g, bounds);\r
  66                 }\r
  67 \r
  68                 public static void DrawHorizontalThumb (Graphics g, Rectangle bounds, TrackBarThumbState state)\r
  69                 {\r
  70                         if (!IsSupported)\r
  71                                 throw new InvalidOperationException ();\r
  72 \r
  73                         VisualStyleRenderer vsr;\r
  74 \r
  75                         switch (state) {\r
  76                                 case TrackBarThumbState.Disabled:\r
  77                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.Thumb.Disabled);\r
  78                                         break;\r
  79                                 case TrackBarThumbState.Hot:\r
  80                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.Thumb.Hot);\r
  81                                         break;\r
  82                                 case TrackBarThumbState.Normal:\r
  83                                 default:\r
  84                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.Thumb.Normal);\r
  85                                         break;\r
  86                                 case TrackBarThumbState.Pressed:\r
  87                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.Thumb.Pressed);\r
  88                                         break;\r
  89                         }\r
  90 \r
  91                         vsr.DrawBackground (g, bounds);\r
  92                 }\r
  93 \r
  94                 public static void DrawHorizontalTicks(Graphics g, Rectangle bounds, int numTicks, EdgeStyle edgeStyle)\r
  95                 {\r
  96                         if (!IsSupported)\r
  97                                 throw new InvalidOperationException ();\r
  98 \r
  99                         if (bounds.Height <= 0 || bounds.Width <= 0 || numTicks <= 0)\r
 100                                 return;\r
 101                                 \r
 102                         VisualStyleRenderer vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.Ticks.Normal);\r
 103                         \r
 104                         double x = bounds.Left;\r
 105                         double delta = (double)(bounds.Width - 2) / (double)(numTicks-1);\r
 106                         \r
 107                         for(int i = 0; i < numTicks; i++)\r
 108                         {\r
 109                                 vsr.DrawEdge(g, new Rectangle((int)Math.Round(x), bounds.Top, 5, bounds.Height), Edges.Left, edgeStyle, EdgeEffects.None);\r
 110                                 x += delta;\r
 111                         }\r
 112                 }\r
 113                 \r
 114                 public static void DrawHorizontalTrack(Graphics g, Rectangle bounds)\r
 115                 {\r
 116                         if (!IsSupported)\r
 117                                 throw new InvalidOperationException ();\r
 118                                 \r
 119                         VisualStyleRenderer vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.Track.Normal);\r
 120                         \r
 121                         vsr.DrawBackground (g, bounds);\r
 122                 }\r
 123 \r
 124                 public static void DrawLeftPointingThumb (Graphics g, Rectangle bounds, TrackBarThumbState state)\r
 125                 {\r
 126                         if (!IsSupported)\r
 127                                 throw new InvalidOperationException ();\r
 128 \r
 129                         VisualStyleRenderer vsr;\r
 130 \r
 131                         switch (state) {\r
 132                                 case TrackBarThumbState.Disabled:\r
 133                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbLeft.Disabled);\r
 134                                         break;\r
 135                                 case TrackBarThumbState.Hot:\r
 136                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbLeft.Hot);\r
 137                                         break;\r
 138                                 case TrackBarThumbState.Normal:\r
 139                                 default:\r
 140                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbLeft.Normal);\r
 141                                         break;\r
 142                                 case TrackBarThumbState.Pressed:\r
 143                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbLeft.Pressed);\r
 144                                         break;\r
 145                         }\r
 146 \r
 147                         vsr.DrawBackground (g, bounds);\r
 148                 }\r
 149 \r
 150                 public static void DrawRightPointingThumb (Graphics g, Rectangle bounds, TrackBarThumbState state)\r
 151                 {\r
 152                         if (!IsSupported)\r
 153                                 throw new InvalidOperationException ();\r
 154 \r
 155                         VisualStyleRenderer vsr;\r
 156 \r
 157                         switch (state) {\r
 158                                 case TrackBarThumbState.Disabled:\r
 159                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbRight.Disabled);\r
 160                                         break;\r
 161                                 case TrackBarThumbState.Hot:\r
 162                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbRight.Hot);\r
 163                                         break;\r
 164                                 case TrackBarThumbState.Normal:\r
 165                                 default:\r
 166                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbRight.Normal);\r
 167                                         break;\r
 168                                 case TrackBarThumbState.Pressed:\r
 169                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbRight.Pressed);\r
 170                                         break;\r
 171                         }\r
 172 \r
 173                         vsr.DrawBackground (g, bounds);\r
 174                 }\r
 175 \r
 176                 public static void DrawTopPointingThumb (Graphics g, Rectangle bounds, TrackBarThumbState state)\r
 177                 {\r
 178                         if (!IsSupported)\r
 179                                 throw new InvalidOperationException ();\r
 180 \r
 181                         VisualStyleRenderer vsr;\r
 182 \r
 183                         switch (state) {\r
 184                                 case TrackBarThumbState.Disabled:\r
 185                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbTop.Disabled);\r
 186                                         break;\r
 187                                 case TrackBarThumbState.Hot:\r
 188                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbTop.Hot);\r
 189                                         break;\r
 190                                 case TrackBarThumbState.Normal:\r
 191                                 default:\r
 192                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbTop.Normal);\r
 193                                         break;\r
 194                                 case TrackBarThumbState.Pressed:\r
 195                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbTop.Pressed);\r
 196                                         break;\r
 197                         }\r
 198 \r
 199                         vsr.DrawBackground (g, bounds);\r
 200                 }\r
 201 \r
 202                 public static void DrawVerticalThumb (Graphics g, Rectangle bounds, TrackBarThumbState state)\r
 203                 {\r
 204                         if (!IsSupported)\r
 205                                 throw new InvalidOperationException ();\r
 206 \r
 207                         VisualStyleRenderer vsr;\r
 208 \r
 209                         switch (state) {\r
 210                                 case TrackBarThumbState.Disabled:\r
 211                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbVertical.Disabled);\r
 212                                         break;\r
 213                                 case TrackBarThumbState.Hot:\r
 214                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbVertical.Hot);\r
 215                                         break;\r
 216                                 case TrackBarThumbState.Normal:\r
 217                                 default:\r
 218                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbVertical.Normal);\r
 219                                         break;\r
 220                                 case TrackBarThumbState.Pressed:\r
 221                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbVertical.Pressed);\r
 222                                         break;\r
 223                         }\r
 224 \r
 225                         vsr.DrawBackground (g, bounds);\r
 226                 }\r
 227 \r
 228                 public static void DrawVerticalTicks (Graphics g, Rectangle bounds, int numTicks, EdgeStyle edgeStyle)\r
 229                 {\r
 230                         if (!IsSupported)\r
 231                                 throw new InvalidOperationException ();\r
 232 \r
 233                         if (bounds.Height <= 0 || bounds.Width <= 0 || numTicks <= 0)\r
 234                                 return;\r
 235 \r
 236                         VisualStyleRenderer vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.TicksVertical.Normal);\r
 237 \r
 238                         double y = bounds.Top;\r
 239                         double delta = (double)(bounds.Height - 2) / (double)(numTicks - 1);\r
 240 \r
 241                         for (int i = 0; i < numTicks; i++) {\r
 242                                 vsr.DrawEdge (g, new Rectangle (bounds.Left, (int)Math.Round (y), bounds.Width, 5), Edges.Top, edgeStyle, EdgeEffects.None);\r
 243                                 y += delta;\r
 244                         }\r
 245                 }\r
 246 \r
 247                 public static void DrawVerticalTrack (Graphics g, Rectangle bounds)\r
 248                 {\r
 249                         if (!IsSupported)\r
 250                                 throw new InvalidOperationException ();\r
 251 \r
 252                         VisualStyleRenderer vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.Track.Normal);\r
 253 \r
 254                         vsr.DrawBackground (g, bounds);\r
 255                 }\r
 256 \r
 257                 public static Size GetBottomPointingThumbSize(Graphics g, TrackBarThumbState state)\r
 258                 {\r
 259                         if (!IsSupported)\r
 260                                 throw new InvalidOperationException ();\r
 261 \r
 262                         VisualStyleRenderer vsr;\r
 263 \r
 264                         switch (state) {\r
 265                                 case TrackBarThumbState.Disabled:\r
 266                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbBottom.Disabled);\r
 267                                         break;\r
 268                                 case TrackBarThumbState.Hot:\r
 269                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbBottom.Hot);\r
 270                                         break;\r
 271                                 case TrackBarThumbState.Normal:\r
 272                                 default:\r
 273                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbBottom.Normal);\r
 274                                         break;\r
 275                                 case TrackBarThumbState.Pressed:\r
 276                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbBottom.Pressed);\r
 277                                         break;\r
 278                         }\r
 279 \r
 280                         return vsr.GetPartSize (g, ThemeSizeType.Draw);\r
 281                 }\r
 282 \r
 283                 public static Size GetLeftPointingThumbSize (Graphics g, TrackBarThumbState state)\r
 284                 {\r
 285                         if (!IsSupported)\r
 286                                 throw new InvalidOperationException ();\r
 287 \r
 288                         VisualStyleRenderer vsr;\r
 289 \r
 290                         switch (state) {\r
 291                                 case TrackBarThumbState.Disabled:\r
 292                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbLeft.Disabled);\r
 293                                         break;\r
 294                                 case TrackBarThumbState.Hot:\r
 295                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbLeft.Hot);\r
 296                                         break;\r
 297                                 case TrackBarThumbState.Normal:\r
 298                                 default:\r
 299                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbLeft.Normal);\r
 300                                         break;\r
 301                                 case TrackBarThumbState.Pressed:\r
 302                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbLeft.Pressed);\r
 303                                         break;\r
 304                         }\r
 305 \r
 306                         return vsr.GetPartSize (g, ThemeSizeType.Draw);\r
 307                 }\r
 308 \r
 309                 public static Size GetRightPointingThumbSize (Graphics g, TrackBarThumbState state)\r
 310                 {\r
 311                         if (!IsSupported)\r
 312                                 throw new InvalidOperationException ();\r
 313 \r
 314                         VisualStyleRenderer vsr;\r
 315 \r
 316                         switch (state) {\r
 317                                 case TrackBarThumbState.Disabled:\r
 318                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbRight.Disabled);\r
 319                                         break;\r
 320                                 case TrackBarThumbState.Hot:\r
 321                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbRight.Hot);\r
 322                                         break;\r
 323                                 case TrackBarThumbState.Normal:\r
 324                                 default:\r
 325                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbRight.Normal);\r
 326                                         break;\r
 327                                 case TrackBarThumbState.Pressed:\r
 328                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbRight.Pressed);\r
 329                                         break;\r
 330                         }\r
 331 \r
 332                         return vsr.GetPartSize (g, ThemeSizeType.Draw);\r
 333                 }\r
 334 \r
 335                 public static Size GetTopPointingThumbSize (Graphics g, TrackBarThumbState state)\r
 336                 {\r
 337                         if (!IsSupported)\r
 338                                 throw new InvalidOperationException ();\r
 339 \r
 340                         VisualStyleRenderer vsr;\r
 341 \r
 342                         switch (state) {\r
 343                                 case TrackBarThumbState.Disabled:\r
 344                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbTop.Disabled);\r
 345                                         break;\r
 346                                 case TrackBarThumbState.Hot:\r
 347                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbTop.Hot);\r
 348                                         break;\r
 349                                 case TrackBarThumbState.Normal:\r
 350                                 default:\r
 351                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbTop.Normal);\r
 352                                         break;\r
 353                                 case TrackBarThumbState.Pressed:\r
 354                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbTop.Pressed);\r
 355                                         break;\r
 356                         }\r
 357 \r
 358                         return vsr.GetPartSize (g, ThemeSizeType.Draw);\r
 359                 }\r
 360                 #endregion\r
 361 \r
 362                 #region Public Static Properties\r
 363                 public static bool IsSupported {\r
 364                         get { return VisualStyleInformation.IsEnabledByUser && (Application.VisualStyleState == VisualStyleState.ClientAndNonClientAreasEnabled || Application.VisualStyleState == VisualStyleState.ClientAreaEnabled); }\r
 365                 }\r
 366                 #endregion\r
 367         }\r
 368 }\r
 369 #endif