mcs/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 using System.Drawing;
  30 using System.Windows.Forms.VisualStyles;
  31
  32 namespace System.Windows.Forms
  33 {
  34         public sealed class TrackBarRenderer
  35         {
  36                 #region Private Constructor
  37                 private TrackBarRenderer () { }
  38                 #endregion
  39
  40                 #region Public Static Methods
  41                 public static void DrawBottomPointingThumb(Graphics g, Rectangle bounds, TrackBarThumbState state)
  42                 {
  43                         if (!IsSupported)
  44                                 throw new InvalidOperationException ();
  45
  46                         VisualStyleRenderer vsr;
  47
  48                         switch (state) {
  49                                 case TrackBarThumbState.Disabled:
  50                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbBottom.Disabled);
  51                                         break;
  52                                 case TrackBarThumbState.Hot:
  53                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbBottom.Hot);
  54                                         break;
  55                                 case TrackBarThumbState.Normal:
  56                                 default:
  57                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbBottom.Normal);
  58                                         break;
  59                                 case TrackBarThumbState.Pressed:
  60                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbBottom.Pressed);
  61                                         break;
  62                         }
  63
  64                         vsr.DrawBackground (g, bounds);
  65                 }
  66
  67                 public static void DrawHorizontalThumb (Graphics g, Rectangle bounds, TrackBarThumbState state)
  68                 {
  69                         if (!IsSupported)
  70                                 throw new InvalidOperationException ();
  71
  72                         VisualStyleRenderer vsr;
  73
  74                         switch (state) {
  75                                 case TrackBarThumbState.Disabled:
  76                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.Thumb.Disabled);
  77                                         break;
  78                                 case TrackBarThumbState.Hot:
  79                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.Thumb.Hot);
  80                                         break;
  81                                 case TrackBarThumbState.Normal:
  82                                 default:
  83                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.Thumb.Normal);
  84                                         break;
  85                                 case TrackBarThumbState.Pressed:
  86                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.Thumb.Pressed);
  87                                         break;
  88                         }
  89
  90                         vsr.DrawBackground (g, bounds);
  91                 }
  92
  93                 public static void DrawHorizontalTicks(Graphics g, Rectangle bounds, int numTicks, EdgeStyle edgeStyle)
  94                 {
  95                         if (!IsSupported)
  96                                 throw new InvalidOperationException ();
  97
  98                         if (bounds.Height <= 0 || bounds.Width <= 0 || numTicks <= 0)
  99                                 return;
 100
 101                         VisualStyleRenderer vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.Ticks.Normal);
 102
 103                         double x = bounds.Left;
 104                         double delta = (double)(bounds.Width - 2) / (double)(numTicks-1);
 105
 106                         for(int i = 0; i < numTicks; i++)
 107                         {
 108                                 vsr.DrawEdge(g, new Rectangle((int)Math.Round(x), bounds.Top, 5, bounds.Height), Edges.Left, edgeStyle, EdgeEffects.None);
 109                                 x += delta;
 110                         }
 111                 }
 112
 113                 public static void DrawHorizontalTrack(Graphics g, Rectangle bounds)
 114                 {
 115                         if (!IsSupported)
 116                                 throw new InvalidOperationException ();
 117
 118                         VisualStyleRenderer vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.Track.Normal);
 119
 120                         vsr.DrawBackground (g, bounds);
 121                 }
 122
 123                 public static void DrawLeftPointingThumb (Graphics g, Rectangle bounds, TrackBarThumbState state)
 124                 {
 125                         if (!IsSupported)
 126                                 throw new InvalidOperationException ();
 127
 128                         VisualStyleRenderer vsr;
 129
 130                         switch (state) {
 131                                 case TrackBarThumbState.Disabled:
 132                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbLeft.Disabled);
 133                                         break;
 134                                 case TrackBarThumbState.Hot:
 135                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbLeft.Hot);
 136                                         break;
 137                                 case TrackBarThumbState.Normal:
 138                                 default:
 139                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbLeft.Normal);
 140                                         break;
 141                                 case TrackBarThumbState.Pressed:
 142                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbLeft.Pressed);
 143                                         break;
 144                         }
 145
 146                         vsr.DrawBackground (g, bounds);
 147                 }
 148
 149                 public static void DrawRightPointingThumb (Graphics g, Rectangle bounds, TrackBarThumbState state)
 150                 {
 151                         if (!IsSupported)
 152                                 throw new InvalidOperationException ();
 153
 154                         VisualStyleRenderer vsr;
 155
 156                         switch (state) {
 157                                 case TrackBarThumbState.Disabled:
 158                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbRight.Disabled);
 159                                         break;
 160                                 case TrackBarThumbState.Hot:
 161                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbRight.Hot);
 162                                         break;
 163                                 case TrackBarThumbState.Normal:
 164                                 default:
 165                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbRight.Normal);
 166                                         break;
 167                                 case TrackBarThumbState.Pressed:
 168                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbRight.Pressed);
 169                                         break;
 170                         }
 171
 172                         vsr.DrawBackground (g, bounds);
 173                 }
 174
 175                 public static void DrawTopPointingThumb (Graphics g, Rectangle bounds, TrackBarThumbState state)
 176                 {
 177                         if (!IsSupported)
 178                                 throw new InvalidOperationException ();
 179
 180                         VisualStyleRenderer vsr;
 181
 182                         switch (state) {
 183                                 case TrackBarThumbState.Disabled:
 184                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbTop.Disabled);
 185                                         break;
 186                                 case TrackBarThumbState.Hot:
 187                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbTop.Hot);
 188                                         break;
 189                                 case TrackBarThumbState.Normal:
 190                                 default:
 191                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbTop.Normal);
 192                                         break;
 193                                 case TrackBarThumbState.Pressed:
 194                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbTop.Pressed);
 195                                         break;
 196                         }
 197
 198                         vsr.DrawBackground (g, bounds);
 199                 }
 200
 201                 public static void DrawVerticalThumb (Graphics g, Rectangle bounds, TrackBarThumbState state)
 202                 {
 203                         if (!IsSupported)
 204                                 throw new InvalidOperationException ();
 205
 206                         VisualStyleRenderer vsr;
 207
 208                         switch (state) {
 209                                 case TrackBarThumbState.Disabled:
 210                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbVertical.Disabled);
 211                                         break;
 212                                 case TrackBarThumbState.Hot:
 213                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbVertical.Hot);
 214                                         break;
 215                                 case TrackBarThumbState.Normal:
 216                                 default:
 217                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbVertical.Normal);
 218                                         break;
 219                                 case TrackBarThumbState.Pressed:
 220                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbVertical.Pressed);
 221                                         break;
 222                         }
 223
 224                         vsr.DrawBackground (g, bounds);
 225                 }
 226
 227                 public static void DrawVerticalTicks (Graphics g, Rectangle bounds, int numTicks, EdgeStyle edgeStyle)
 228                 {
 229                         if (!IsSupported)
 230                                 throw new InvalidOperationException ();
 231
 232                         if (bounds.Height <= 0 || bounds.Width <= 0 || numTicks <= 0)
 233                                 return;
 234
 235                         VisualStyleRenderer vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.TicksVertical.Normal);
 236
 237                         double y = bounds.Top;
 238                         double delta = (double)(bounds.Height - 2) / (double)(numTicks - 1);
 239
 240                         for (int i = 0; i < numTicks; i++) {
 241                                 vsr.DrawEdge (g, new Rectangle (bounds.Left, (int)Math.Round (y), bounds.Width, 5), Edges.Top, edgeStyle, EdgeEffects.None);
 242                                 y += delta;
 243                         }
 244                 }
 245
 246                 public static void DrawVerticalTrack (Graphics g, Rectangle bounds)
 247                 {
 248                         if (!IsSupported)
 249                                 throw new InvalidOperationException ();
 250
 251                         VisualStyleRenderer vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.Track.Normal);
 252
 253                         vsr.DrawBackground (g, bounds);
 254                 }
 255
 256                 public static Size GetBottomPointingThumbSize(Graphics g, TrackBarThumbState state)
 257                 {
 258                         if (!IsSupported)
 259                                 throw new InvalidOperationException ();
 260
 261                         VisualStyleRenderer vsr;
 262
 263                         switch (state) {
 264                                 case TrackBarThumbState.Disabled:
 265                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbBottom.Disabled);
 266                                         break;
 267                                 case TrackBarThumbState.Hot:
 268                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbBottom.Hot);
 269                                         break;
 270                                 case TrackBarThumbState.Normal:
 271                                 default:
 272                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbBottom.Normal);
 273                                         break;
 274                                 case TrackBarThumbState.Pressed:
 275                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbBottom.Pressed);
 276                                         break;
 277                         }
 278
 279                         return vsr.GetPartSize (g, ThemeSizeType.Draw);
 280                 }
 281
 282                 public static Size GetLeftPointingThumbSize (Graphics g, TrackBarThumbState state)
 283                 {
 284                         if (!IsSupported)
 285                                 throw new InvalidOperationException ();
 286
 287                         VisualStyleRenderer vsr;
 288
 289                         switch (state) {
 290                                 case TrackBarThumbState.Disabled:
 291                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbLeft.Disabled);
 292                                         break;
 293                                 case TrackBarThumbState.Hot:
 294                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbLeft.Hot);
 295                                         break;
 296                                 case TrackBarThumbState.Normal:
 297                                 default:
 298                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbLeft.Normal);
 299                                         break;
 300                                 case TrackBarThumbState.Pressed:
 301                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbLeft.Pressed);
 302                                         break;
 303                         }
 304
 305                         return vsr.GetPartSize (g, ThemeSizeType.Draw);
 306                 }
 307
 308                 public static Size GetRightPointingThumbSize (Graphics g, TrackBarThumbState state)
 309                 {
 310                         if (!IsSupported)
 311                                 throw new InvalidOperationException ();
 312
 313                         VisualStyleRenderer vsr;
 314
 315                         switch (state) {
 316                                 case TrackBarThumbState.Disabled:
 317                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbRight.Disabled);
 318                                         break;
 319                                 case TrackBarThumbState.Hot:
 320                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbRight.Hot);
 321                                         break;
 322                                 case TrackBarThumbState.Normal:
 323                                 default:
 324                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbRight.Normal);
 325                                         break;
 326                                 case TrackBarThumbState.Pressed:
 327                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbRight.Pressed);
 328                                         break;
 329                         }
 330
 331                         return vsr.GetPartSize (g, ThemeSizeType.Draw);
 332                 }
 333
 334                 public static Size GetTopPointingThumbSize (Graphics g, TrackBarThumbState state)
 335                 {
 336                         if (!IsSupported)
 337                                 throw new InvalidOperationException ();
 338
 339                         VisualStyleRenderer vsr;
 340
 341                         switch (state) {
 342                                 case TrackBarThumbState.Disabled:
 343                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbTop.Disabled);
 344                                         break;
 345                                 case TrackBarThumbState.Hot:
 346                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbTop.Hot);
 347                                         break;
 348                                 case TrackBarThumbState.Normal:
 349                                 default:
 350                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbTop.Normal);
 351                                         break;
 352                                 case TrackBarThumbState.Pressed:
 353                                         vsr = new VisualStyleRenderer (VisualStyleElement.TrackBar.ThumbTop.Pressed);
 354                                         break;
 355                         }
 356
 357                         return vsr.GetPartSize (g, ThemeSizeType.Draw);
 358                 }
 359                 #endregion
 360
 361                 #region Public Static Properties
 362                 public static bool IsSupported {
 363                         get { return VisualStyleInformation.IsEnabledByUser && (Application.VisualStyleState == VisualStyleState.ClientAndNonClientAreasEnabled || Application.VisualStyleState == VisualStyleState.ClientAreaEnabled); }
 364                 }
 365                 #endregion
 366         }
 367 }