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

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