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