mcs/class/System.Windows.Forms/System.Windows.Forms/ScrollBarRenderer.cs

   1 //
   2 // ScrollBarRenderer.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 ScrollBarRenderer
  35         {
  36                 #region Private Constructor
  37                 private ScrollBarRenderer () { }
  38                 #endregion
  39
  40                 #region Public Static Methods
  41                 public static void DrawArrowButton (Graphics g, Rectangle bounds, ScrollBarArrowButtonState state)
  42                 {
  43                         if (!IsSupported)
  44                                 throw new InvalidOperationException ();
  45
  46                         VisualStyleRenderer vsr;
  47
  48                         switch (state) {
  49                                 case ScrollBarArrowButtonState.DownDisabled:
  50                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ArrowButton.DownDisabled);
  51                                         break;
  52                                 case ScrollBarArrowButtonState.DownHot:
  53                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ArrowButton.DownHot);
  54                                         break;
  55                                 case ScrollBarArrowButtonState.DownNormal:
  56                                 default:
  57                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ArrowButton.DownNormal);
  58                                         break;
  59                                 case ScrollBarArrowButtonState.DownPressed:
  60                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ArrowButton.DownPressed);
  61                                         break;
  62                                 case ScrollBarArrowButtonState.LeftDisabled:
  63                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ArrowButton.LeftDisabled);
  64                                         break;
  65                                 case ScrollBarArrowButtonState.LeftHot:
  66                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ArrowButton.LeftHot);
  67                                         break;
  68                                 case ScrollBarArrowButtonState.LeftNormal:
  69                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ArrowButton.LeftNormal);
  70                                         break;
  71                                 case ScrollBarArrowButtonState.LeftPressed:
  72                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ArrowButton.LeftPressed);
  73                                         break;
  74                                 case ScrollBarArrowButtonState.RightDisabled:
  75                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ArrowButton.RightDisabled);
  76                                         break;
  77                                 case ScrollBarArrowButtonState.RightHot:
  78                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ArrowButton.RightHot);
  79                                         break;
  80                                 case ScrollBarArrowButtonState.RightNormal:
  81                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ArrowButton.RightNormal);
  82                                         break;
  83                                 case ScrollBarArrowButtonState.RightPressed:
  84                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ArrowButton.RightPressed);
  85                                         break;
  86                                 case ScrollBarArrowButtonState.UpDisabled:
  87                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ArrowButton.UpDisabled);
  88                                         break;
  89                                 case ScrollBarArrowButtonState.UpHot:
  90                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ArrowButton.UpHot);
  91                                         break;
  92                                 case ScrollBarArrowButtonState.UpNormal:
  93                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ArrowButton.UpNormal);
  94                                         break;
  95                                 case ScrollBarArrowButtonState.UpPressed:
  96                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ArrowButton.UpPressed);
  97                                         break;
  98                         }
  99
 100                         vsr.DrawBackground(g, bounds);
 101                 }
 102
 103                 public static void DrawHorizontalThumb (Graphics g, Rectangle bounds, ScrollBarState state)
 104                 {
 105                         if (!IsSupported)
 106                                 throw new InvalidOperationException ();
 107
 108                         VisualStyleRenderer vsr;
 109
 110                         switch (state) {
 111                                 case ScrollBarState.Disabled:
 112                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ThumbButtonHorizontal.Disabled);
 113                                         break;
 114                                 case ScrollBarState.Hot:
 115                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ThumbButtonHorizontal.Hot);
 116                                         break;
 117                                 case ScrollBarState.Normal:
 118                                 default:
 119                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ThumbButtonHorizontal.Normal);
 120                                         break;
 121                                 case ScrollBarState.Pressed:
 122                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ThumbButtonHorizontal.Pressed);
 123                                         break;
 124                         }
 125
 126                         vsr.DrawBackground (g, bounds);
 127                 }
 128
 129                 public static void DrawHorizontalThumbGrip (Graphics g, Rectangle bounds, ScrollBarState state)
 130                 {
 131                         if (!IsSupported)
 132                                 throw new InvalidOperationException ();
 133
 134                         VisualStyleRenderer vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.GripperHorizontal.Normal);
 135
 136                         vsr.DrawBackground (g, bounds);
 137                 }
 138
 139                 public static void DrawLeftHorizontalTrack (Graphics g, Rectangle bounds, ScrollBarState state)
 140                 {
 141                         if (!IsSupported)
 142                                 throw new InvalidOperationException ();
 143
 144                         VisualStyleRenderer vsr;
 145
 146                         switch (state) {
 147                                 case ScrollBarState.Disabled:
 148                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.LeftTrackHorizontal.Disabled);
 149                                         break;
 150                                 case ScrollBarState.Hot:
 151                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.LeftTrackHorizontal.Hot);
 152                                         break;
 153                                 case ScrollBarState.Normal:
 154                                 default:
 155                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.LeftTrackHorizontal.Normal);
 156                                         break;
 157                                 case ScrollBarState.Pressed:
 158                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.LeftTrackHorizontal.Pressed);
 159                                         break;
 160                         }
 161
 162                         vsr.DrawBackground (g, bounds);
 163                 }
 164
 165                 public static void DrawLowerVerticalTrack (Graphics g, Rectangle bounds, ScrollBarState state)
 166                 {
 167                         if (!IsSupported)
 168                                 throw new InvalidOperationException ();
 169
 170                         VisualStyleRenderer vsr;
 171
 172                         switch (state) {
 173                                 case ScrollBarState.Disabled:
 174                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.LowerTrackVertical.Disabled);
 175                                         break;
 176                                 case ScrollBarState.Hot:
 177                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.LowerTrackVertical.Hot);
 178                                         break;
 179                                 case ScrollBarState.Normal:
 180                                 default:
 181                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.LowerTrackVertical.Normal);
 182                                         break;
 183                                 case ScrollBarState.Pressed:
 184                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.LowerTrackVertical.Pressed);
 185                                         break;
 186                         }
 187
 188                         vsr.DrawBackground (g, bounds);
 189                 }
 190
 191                 public static void DrawRightHorizontalTrack (Graphics g, Rectangle bounds, ScrollBarState state)
 192                 {
 193                         if (!IsSupported)
 194                                 throw new InvalidOperationException ();
 195
 196                         VisualStyleRenderer vsr;
 197
 198                         switch (state) {
 199                                 case ScrollBarState.Disabled:
 200                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.RightTrackHorizontal.Disabled);
 201                                         break;
 202                                 case ScrollBarState.Hot:
 203                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.RightTrackHorizontal.Hot);
 204                                         break;
 205                                 case ScrollBarState.Normal:
 206                                 default:
 207                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.RightTrackHorizontal.Normal);
 208                                         break;
 209                                 case ScrollBarState.Pressed:
 210                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.RightTrackHorizontal.Pressed);
 211                                         break;
 212                         }
 213
 214                         vsr.DrawBackground (g, bounds);
 215                 }
 216
 217                 public static void DrawSizeBox (Graphics g, Rectangle bounds, ScrollBarSizeBoxState state)
 218                 {
 219                         if (!IsSupported)
 220                                 throw new InvalidOperationException ();
 221
 222                         VisualStyleRenderer vsr;
 223
 224                         switch (state) {
 225                                 case ScrollBarSizeBoxState.LeftAlign:
 226                                 default:
 227                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.SizeBox.LeftAlign);
 228                                         break;
 229                                 case ScrollBarSizeBoxState.RightAlign:
 230                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.SizeBox.RightAlign);
 231                                         break;
 232                         }
 233
 234                         vsr.DrawBackground (g, bounds);
 235                 }
 236
 237                 public static void DrawUpperVerticalTrack (Graphics g, Rectangle bounds, ScrollBarState state)
 238                 {
 239                         if (!IsSupported)
 240                                 throw new InvalidOperationException ();
 241
 242                         VisualStyleRenderer vsr;
 243
 244                         switch (state) {
 245                                 case ScrollBarState.Disabled:
 246                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.UpperTrackVertical.Disabled);
 247                                         break;
 248                                 case ScrollBarState.Hot:
 249                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.UpperTrackVertical.Hot);
 250                                         break;
 251                                 case ScrollBarState.Normal:
 252                                 default:
 253                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.UpperTrackVertical.Normal);
 254                                         break;
 255                                 case ScrollBarState.Pressed:
 256                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.UpperTrackVertical.Pressed);
 257                                         break;
 258                         }
 259
 260                         vsr.DrawBackground (g, bounds);
 261                 }
 262
 263                 public static void DrawVerticalThumb (Graphics g, Rectangle bounds, ScrollBarState state)
 264                 {
 265                         if (!IsSupported)
 266                                 throw new InvalidOperationException ();
 267
 268                         VisualStyleRenderer vsr;
 269
 270                         switch (state) {
 271                                 case ScrollBarState.Disabled:
 272                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ThumbButtonVertical.Disabled);
 273                                         break;
 274                                 case ScrollBarState.Hot:
 275                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ThumbButtonVertical.Hot);
 276                                         break;
 277                                 case ScrollBarState.Normal:
 278                                 default:
 279                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ThumbButtonVertical.Normal);
 280                                         break;
 281                                 case ScrollBarState.Pressed:
 282                                         vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.ThumbButtonVertical.Pressed);
 283                                         break;
 284                         }
 285
 286                         vsr.DrawBackground (g, bounds);
 287                 }
 288
 289                 public static void DrawVerticalThumbGrip (Graphics g, Rectangle bounds, ScrollBarState state)
 290                 {
 291                         if (!IsSupported)
 292                                 throw new InvalidOperationException ();
 293
 294                         VisualStyleRenderer vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.GripperVertical.Normal); ;
 295
 296                         vsr.DrawBackground (g, bounds);
 297                 }
 298
 299                 public static Size GetSizeBoxSize (Graphics g, ScrollBarState state)
 300                 {
 301                         if (!IsSupported)
 302                                 throw new InvalidOperationException ();
 303
 304                         VisualStyleRenderer vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.SizeBox.LeftAlign);
 305
 306                         return vsr.GetPartSize(g, ThemeSizeType.Draw);
 307                 }
 308
 309                 public static Size GetThumbGripSize (Graphics g, ScrollBarState state)
 310                 {
 311                         if (!IsSupported)
 312                                 throw new InvalidOperationException ();
 313
 314                         VisualStyleRenderer vsr = new VisualStyleRenderer (VisualStyleElement.ScrollBar.GripperVertical.Normal);
 315
 316                         return vsr.GetPartSize (g, ThemeSizeType.Draw);
 317                 }
 318                 #endregion
 319
 320                 #region Public Static Properties
 321                 public static bool IsSupported {
 322                         get { return VisualStyleInformation.IsEnabledByUser && (Application.VisualStyleState == VisualStyleState.ClientAndNonClientAreasEnabled || Application.VisualStyleState == VisualStyleState.ClientAreaEnabled); }
 323                 }
 324                 #endregion
 325         }
 326 }