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

   1 //\r
   2 // RadioButtonRenderer.cs\r
   3 //\r
   4 // Permission is hereby granted, free of charge, to any person obtaining\r
   5 // a copy of this software and associated documentation files (the\r
   6 // "Software"), to deal in the Software without restriction, including\r
   7 // without limitation the rights to use, copy, modify, merge, publish,\r
   8 // distribute, sublicense, and/or sell copies of the Software, and to\r
   9 // permit persons to whom the Software is furnished to do so, subject to\r
  10 // the following conditions:\r
  11 // \r
  12 // The above copyright notice and this permission notice shall be\r
  13 // included in all copies or substantial portions of the Software.\r
  14 // \r
  15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,\r
  16 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\r
  17 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND\r
  18 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE\r
  19 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION\r
  20 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION\r
  21 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
  22 //\r
  23 // Copyright (c) 2006 Novell, Inc.\r
  24 //\r
  25 // Authors:\r
  26 //      Jonathan Pobst (monkey@jpobst.com)\r
  27 //\r
  28 \r
  29 #if NET_2_0\r
  30 using System.Drawing;\r
  31 using System.Windows.Forms.VisualStyles;\r
  32 \r
  33 namespace System.Windows.Forms\r
  34 {\r
  35         public sealed class RadioButtonRenderer\r
  36         {\r
  37                 private static bool always_use_visual_styles = false;\r
  38 \r
  39                 #region Private Constructor\r
  40                 private RadioButtonRenderer () { }\r
  41                 #endregion\r
  42 \r
  43                 #region Public Static Methods\r
  44                 public static void DrawRadioButton (Graphics g, Point glyphLocation, RadioButtonState state)\r
  45                 {\r
  46                         DrawRadioButton (g, glyphLocation, Rectangle.Empty, String.Empty, null, TextFormatFlags.HorizontalCenter, null, Rectangle.Empty, false, state);\r
  47                 }\r
  48 \r
  49                 public static void DrawRadioButton (Graphics g, Point glyphLocation, Rectangle textBounds, string radioButtonText, Font font, bool focused, RadioButtonState state)\r
  50                 {\r
  51                         DrawRadioButton (g, glyphLocation, textBounds, radioButtonText, font, TextFormatFlags.HorizontalCenter, null, Rectangle.Empty, focused, state);\r
  52                 }\r
  53 \r
  54                 public static void DrawRadioButton (Graphics g, Point glyphLocation, Rectangle textBounds, string radioButtonText, Font font, TextFormatFlags flags, bool focused, RadioButtonState state)\r
  55                 {\r
  56                         DrawRadioButton (g, glyphLocation, textBounds, radioButtonText, font, flags, null, Rectangle.Empty, focused, state);\r
  57                 }\r
  58 \r
  59                 public static void DrawRadioButton (Graphics g, Point glyphLocation, Rectangle textBounds, string radioButtonText, Font font, Image image, Rectangle imageBounds, bool focused, RadioButtonState state)\r
  60                 {\r
  61                         DrawRadioButton (g, glyphLocation, textBounds, radioButtonText, font, TextFormatFlags.HorizontalCenter, image, imageBounds, focused, state);\r
  62                 }\r
  63 \r
  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)\r
  65                 {\r
  66                         Rectangle bounds = new Rectangle (glyphLocation, GetGlyphSize (g, state));\r
  67 \r
  68                         if (Application.RenderWithVisualStyles || always_use_visual_styles == true) {\r
  69                                 VisualStyleRenderer vsr = GetRadioButtonRenderer (state);\r
  70 \r
  71                                 vsr.DrawBackground (g, bounds);\r
  72 \r
  73                                 if (image != null)\r
  74                                         vsr.DrawImage (g, imageBounds, image);\r
  75 \r
  76                                 if (focused)\r
  77                                         ControlPaint.DrawFocusRectangle (g, textBounds);\r
  78 \r
  79                                 if (radioButtonText != String.Empty)\r
  80                                         if (state == RadioButtonState.CheckedDisabled || state == RadioButtonState.UncheckedDisabled)\r
  81                                                 TextRenderer.DrawText (g, radioButtonText, font, textBounds, SystemColors.GrayText, flags);\r
  82                                         else\r
  83                                                 TextRenderer.DrawText (g, radioButtonText, font, textBounds, SystemColors.ControlText, flags);\r
  84                         }\r
  85                         else {\r
  86                                 switch (state) {\r
  87                                         case RadioButtonState.CheckedDisabled:\r
  88                                                 ControlPaint.DrawRadioButton (g, bounds, ButtonState.Inactive | ButtonState.Checked);\r
  89                                                 break;\r
  90                                         case RadioButtonState.CheckedHot:\r
  91                                         case RadioButtonState.CheckedNormal:\r
  92                                                 ControlPaint.DrawRadioButton (g, bounds, ButtonState.Checked);\r
  93                                                 break;\r
  94                                         case RadioButtonState.CheckedPressed:\r
  95                                                 ControlPaint.DrawRadioButton (g, bounds, ButtonState.Pushed | ButtonState.Checked);\r
  96                                                 break;\r
  97                                         case RadioButtonState.UncheckedDisabled:\r
  98                                         case RadioButtonState.UncheckedPressed:\r
  99                                                 ControlPaint.DrawRadioButton (g, bounds, ButtonState.Inactive);\r
 100                                                 break;\r
 101                                         case RadioButtonState.UncheckedHot:\r
 102                                         case RadioButtonState.UncheckedNormal:\r
 103                                                 ControlPaint.DrawRadioButton (g, bounds, ButtonState.Normal);\r
 104                                                 break;\r
 105                                 }\r
 106 \r
 107                                 if (image != null)\r
 108                                         g.DrawImage (image, imageBounds);\r
 109                         \r
 110                                 if (focused)\r
 111                                         ControlPaint.DrawFocusRectangle (g, textBounds);\r
 112 \r
 113                                 if (radioButtonText != String.Empty)\r
 114                                         TextRenderer.DrawText (g, radioButtonText, font, textBounds, SystemColors.ControlText, flags);\r
 115                         }\r
 116 \r
 117                 }\r
 118 \r
 119                 public static bool IsBackgroundPartiallyTransparent (RadioButtonState state)\r
 120                 {\r
 121                         if (!VisualStyleRenderer.IsSupported)\r
 122                                 return false;\r
 123 \r
 124                         VisualStyleRenderer vsr = GetRadioButtonRenderer (state);\r
 125 \r
 126                         return vsr.IsBackgroundPartiallyTransparent ();\r
 127                 }\r
 128 \r
 129                 public static void DrawParentBackground (Graphics g, Rectangle bounds, Control childControl)\r
 130                 {\r
 131                         if (!VisualStyleRenderer.IsSupported)\r
 132                                 return;\r
 133 \r
 134                         VisualStyleRenderer vsr = new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.UncheckedNormal);\r
 135 \r
 136                         vsr.DrawParentBackground (g, bounds, childControl);\r
 137                 }\r
 138 \r
 139                 public static Size GetGlyphSize (Graphics g, RadioButtonState state)\r
 140                 {\r
 141                         if (!VisualStyleRenderer.IsSupported)\r
 142                                 return new Size (13, 13);\r
 143 \r
 144                         VisualStyleRenderer vsr = GetRadioButtonRenderer(state);\r
 145 \r
 146                         return vsr.GetPartSize (g, ThemeSizeType.Draw);\r
 147                 }\r
 148                 #endregion\r
 149 \r
 150                 #region Private Static Methods\r
 151                 private static VisualStyleRenderer GetRadioButtonRenderer (RadioButtonState state)\r
 152                 {\r
 153                         switch (state) {\r
 154                                 case RadioButtonState.CheckedDisabled:\r
 155                                         return new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.CheckedDisabled);\r
 156                                 case RadioButtonState.CheckedHot:\r
 157                                         return new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.CheckedHot);\r
 158                                 case RadioButtonState.CheckedNormal:\r
 159                                         return new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.CheckedNormal);\r
 160                                 case RadioButtonState.CheckedPressed:\r
 161                                         return new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.CheckedPressed);\r
 162                                 case RadioButtonState.UncheckedDisabled:\r
 163                                         return new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.UncheckedDisabled);\r
 164                                 case RadioButtonState.UncheckedHot:\r
 165                                         return new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.UncheckedHot);\r
 166                                 case RadioButtonState.UncheckedNormal:\r
 167                                 default:\r
 168                                         return new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.UncheckedNormal);\r
 169                                 case RadioButtonState.UncheckedPressed:\r
 170                                         return new VisualStyleRenderer (VisualStyleElement.Button.RadioButton.UncheckedPressed);\r
 171                         }\r
 172                 }\r
 173                 #endregion\r
 174 \r
 175                 #region Public Static Properties\r
 176                 public static bool RenderMatchingApplicationState {\r
 177                         get { return !always_use_visual_styles; }\r
 178                         set { always_use_visual_styles = !value; }\r
 179                 }\r
 180                 #endregion\r
 181         }\r
 182 }\r
 183 #endif