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

   1 //
   2 // RadioButtonRenderer.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 #if NET_2_0
  35         public
  36 #endif
  37         sealed class RadioButtonRenderer
  38         {
  39                 private static bool always_use_visual_styles = false;
  40
  41                 #region Private Constructor
  42                 private RadioButtonRenderer () { }
  43                 #endregion
  44
  45                 #region Public Static Methods
  46                 public static void DrawRadioButton (Graphics g, Point glyphLocation, RadioButtonState state)
  47                 {
  48                         DrawRadioButton (g, glyphLocation, Rectangle.Empty, String.Empty, null, TextFormatFlags.HorizontalCenter, null, Rectangle.Empty, false, state);
  49                 }
  50
  51                 public static void DrawRadioButton (Graphics g, Point glyphLocation, Rectangle textBounds, string radioButtonText, Font font, bool focused, RadioButtonState state)
  52                 {
  53                         DrawRadioButton (g, glyphLocation, textBounds, radioButtonText, font, TextFormatFlags.HorizontalCenter, null, Rectangle.Empty, focused, state);
  54                 }
  55
  56                 public static void DrawRadioButton (Graphics g, Point glyphLocation, Rectangle textBounds, string radioButtonText, Font font, TextFormatFlags flags, bool focused, RadioButtonState state)
  57                 {
  58                         DrawRadioButton (g, glyphLocation, textBounds, radioButtonText, font, flags, null, Rectangle.Empty, focused, state);
  59                 }
  60
  61                 public static void DrawRadioButton (Graphics g, Point glyphLocation, Rectangle textBounds, string radioButtonText, Font font, Image image, Rectangle imageBounds, bool focused, RadioButtonState state)
  62                 {
  63                         DrawRadioButton (g, glyphLocation, textBounds, radioButtonText, font, TextFormatFlags.HorizontalCenter, image, imageBounds, focused, state);
  64                 }
  65
  66                 public static void DrawRadioButton (Graphics g, Point glyphLocation, Rectangle textBounds, string radioButtonText, Font font, TextFormatFlags flags, Image image, Rectangle imageBounds, bool focused, RadioButtonState state)
  67                 {
  68                         Rectangle bounds = new Rectangle (glyphLocation, GetGlyphSize (g, state));
  69
  70                         if (Application.RenderWithVisualStyles || always_use_visual_styles == true) {
  71                                 VisualStyleRenderer vsr = GetRadioButtonRenderer (state);
  72
  73                                 vsr.DrawBackground (g, bounds);
  74
  75                                 if (image != null)
  76                                         vsr.DrawImage (g, imageBounds, image);
  77
  78                                 if (focused)
  79                                         ControlPaint.DrawFocusRectangle (g, textBounds);
  80
  81                                 if (radioButtonText != String.Empty)
  82                                         if (state == RadioButtonState.CheckedDisabled || state == RadioButtonState.UncheckedDisabled)
  83                                                 TextRenderer.DrawText (g, radioButtonText, font, textBounds, SystemColors.GrayText, flags);
  84                                         else
  85                                                 TextRenderer.DrawText (g, radioButtonText, font, textBounds, SystemColors.ControlText, flags);
  86                         }
  87                         else {
  88                                 switch (state) {
  89                                         case RadioButtonState.CheckedDisabled:
  90                                                 ControlPaint.DrawRadioButton (g, bounds, ButtonState.Inactive | ButtonState.Checked);
  91                                                 break;
  92                                         case RadioButtonState.CheckedHot:
  93                                         case RadioButtonState.CheckedNormal:
  94                                                 ControlPaint.DrawRadioButton (g, bounds, ButtonState.Checked);
  95                                                 break;
  96                                         case RadioButtonState.CheckedPressed:
  97                                                 ControlPaint.DrawRadioButton (g, bounds, ButtonState.Pushed | ButtonState.Checked);
  98                                                 break;
  99                                         case RadioButtonState.UncheckedDisabled:
 100                                         case RadioButtonState.UncheckedPressed:
 101                                                 ControlPaint.DrawRadioButton (g, bounds, ButtonState.Inactive);
 102                                                 break;
 103                                         case RadioButtonState.UncheckedHot:
 104                                         case RadioButtonState.UncheckedNormal:
 105                                                 ControlPaint.DrawRadioButton (g, bounds, ButtonState.Normal);
 106                                                 break;
 107                                 }
 108
 109                                 if (image != null)
 110                                         g.DrawImage (image, imageBounds);
 111
 112                                 if (focused)
 113                                         ControlPaint.DrawFocusRectangle (g, textBounds);
 114
 115                                 if (radioButtonText != String.Empty)
 116                                         TextRenderer.DrawText (g, radioButtonText, font, textBounds, SystemColors.ControlText, flags);
 117                         }
 118
 119                 }
 120
 121                 public static bool IsBackgroundPartiallyTransparent (RadioButtonState state)
 122                 {
 123                         if (!VisualStyleRenderer.IsSupported)
 124                                 return false;
 125
 126                         VisualStyleRenderer vsr = GetRadioButtonRenderer (state);
 127
 128                         return vsr.IsBackgroundPartiallyTransparent ();
 129                 }
 130
 131                 public static void DrawParentBackground (Graphics g, Rectangle bounds, Control childControl)
 132                 {
 133                         if (!VisualStyleRenderer.IsSupported)
 134                                 return;
 135
 136                         VisualStyleRenderer vsr = new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.UncheckedNormal);
 137
 138                         vsr.DrawParentBackground (g, bounds, childControl);
 139                 }
 140
 141                 public static Size GetGlyphSize (Graphics g, RadioButtonState state)
 142                 {
 143                         if (!VisualStyleRenderer.IsSupported)
 144                                 return new Size (13, 13);
 145
 146                         VisualStyleRenderer vsr = GetRadioButtonRenderer(state);
 147
 148                         return vsr.GetPartSize (g, ThemeSizeType.Draw);
 149                 }
 150                 #endregion
 151
 152                 #region Private Static Methods
 153                 private static VisualStyleRenderer GetRadioButtonRenderer (RadioButtonState state)
 154                 {
 155                         switch (state) {
 156                                 case RadioButtonState.CheckedDisabled:
 157                                         return new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.CheckedDisabled);
 158                                 case RadioButtonState.CheckedHot:
 159                                         return new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.CheckedHot);
 160                                 case RadioButtonState.CheckedNormal:
 161                                         return new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.CheckedNormal);
 162                                 case RadioButtonState.CheckedPressed:
 163                                         return new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.CheckedPressed);
 164                                 case RadioButtonState.UncheckedDisabled:
 165                                         return new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.UncheckedDisabled);
 166                                 case RadioButtonState.UncheckedHot:
 167                                         return new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.UncheckedHot);
 168                                 case RadioButtonState.UncheckedNormal:
 169                                 default:
 170                                         return new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.UncheckedNormal);
 171                                 case RadioButtonState.UncheckedPressed:
 172                                         return new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.UncheckedPressed);
 173                         }
 174                 }
 175                 #endregion
 176
 177                 #region Public Static Properties
 178                 public static bool RenderMatchingApplicationState {
 179                         get { return !always_use_visual_styles; }
 180                         set { always_use_visual_styles = !value; }
 181                 }
 182                 #endregion
 183         }
 184 }