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

   1 //
   2 // CheckBoxRenderer.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 CheckBoxRenderer
  36         {
  37                 private static bool always_use_visual_styles = false;
  38
  39                 #region Private Constructor
  40                 private CheckBoxRenderer () {}
  41                 #endregion
  42
  43                 #region Public Static Methods
  44                 public static void DrawCheckBox (Graphics g, Point glyphLocation, CheckBoxState state)
  45                 {
  46                         DrawCheckBox (g, glyphLocation, Rectangle.Empty, String.Empty, null, TextFormatFlags.HorizontalCenter, null, Rectangle.Empty, false, state);
  47                 }
  48
  49                 public static void DrawCheckBox (Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, bool focused, CheckBoxState state)
  50                 {
  51                         DrawCheckBox (g, glyphLocation, textBounds, checkBoxText, font, TextFormatFlags.HorizontalCenter, null, Rectangle.Empty, focused, state);
  52                 }
  53
  54                 public static void DrawCheckBox (Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, TextFormatFlags flags, bool focused, CheckBoxState state)
  55                 {
  56                         DrawCheckBox (g, glyphLocation, textBounds, checkBoxText, font, flags, null, Rectangle.Empty, focused, state);
  57                 }
  58
  59                 public static void DrawCheckBox (Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, Image image, Rectangle imageBounds, bool focused, CheckBoxState state)
  60                 {
  61                         DrawCheckBox (g, glyphLocation, textBounds, checkBoxText, font, TextFormatFlags.HorizontalCenter, image, imageBounds, focused, state);
  62                 }
  63
  64                 public static void DrawCheckBox (Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, TextFormatFlags flags, Image image, Rectangle imageBounds, bool focused, CheckBoxState state)
  65                 {
  66                         Rectangle bounds = new Rectangle (glyphLocation, GetGlyphSize (g, state));
  67
  68                         if (Application.RenderWithVisualStyles || always_use_visual_styles == true) {
  69                                 VisualStyleRenderer vsr = GetCheckBoxRenderer (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 (checkBoxText != String.Empty)
  80                                         if (state == CheckBoxState.CheckedDisabled || state == CheckBoxState.MixedDisabled || state == CheckBoxState.UncheckedDisabled)
  81                                                 TextRenderer.DrawText (g, checkBoxText, font, textBounds, SystemColors.GrayText, flags);
  82                                         else
  83                                                 TextRenderer.DrawText (g, checkBoxText, font, textBounds, SystemColors.ControlText, flags);
  84                         } else {
  85                                 switch (state) {
  86                                         case CheckBoxState.CheckedDisabled:
  87                                         case CheckBoxState.MixedDisabled:
  88                                         case CheckBoxState.MixedPressed:
  89                                                 ControlPaint.DrawCheckBox (g, bounds, ButtonState.Inactive | ButtonState.Checked);
  90                                                 break;
  91                                         case CheckBoxState.CheckedHot:
  92                                         case CheckBoxState.CheckedNormal:
  93                                                 ControlPaint.DrawCheckBox (g, bounds, ButtonState.Checked);
  94                                                 break;
  95                                         case CheckBoxState.CheckedPressed:
  96                                                 ControlPaint.DrawCheckBox (g, bounds, ButtonState.Pushed | ButtonState.Checked);
  97                                                 break;
  98                                         case CheckBoxState.MixedHot:
  99                                         case CheckBoxState.MixedNormal:
 100                                                 ControlPaint.DrawMixedCheckBox (g, bounds, ButtonState.Checked);
 101                                                 break;
 102                                         case CheckBoxState.UncheckedDisabled:
 103                                         case CheckBoxState.UncheckedPressed:
 104                                                 ControlPaint.DrawCheckBox (g, bounds, ButtonState.Inactive);
 105                                                 break;
 106                                         case CheckBoxState.UncheckedHot:
 107                                         case CheckBoxState.UncheckedNormal:
 108                                                 ControlPaint.DrawCheckBox (g, bounds, ButtonState.Normal);
 109                                                 break;
 110                                 }
 111
 112                                 if (image != null)
 113                                         g.DrawImage (image, imageBounds);
 114
 115                                 if (focused)
 116                                         ControlPaint.DrawFocusRectangle (g, textBounds);
 117
 118                                 if (checkBoxText != String.Empty)
 119                                         TextRenderer.DrawText (g, checkBoxText, font, textBounds, SystemColors.ControlText, flags);
 120                         }
 121                 }
 122
 123                 public static bool IsBackgroundPartiallyTransparent (CheckBoxState state)
 124                 {
 125                         if (!VisualStyleRenderer.IsSupported)
 126                                 return false;
 127
 128                         VisualStyleRenderer vsr = GetCheckBoxRenderer (state);
 129
 130                         return vsr.IsBackgroundPartiallyTransparent ();
 131                 }
 132
 133                 public static void DrawParentBackground (Graphics g, Rectangle bounds, Control childControl)
 134                 {
 135                         if (!VisualStyleRenderer.IsSupported)
 136                                 return;
 137
 138                         VisualStyleRenderer vsr = new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.UncheckedNormal);
 139
 140                         vsr.DrawParentBackground (g, bounds, childControl);
 141                 }
 142
 143                 public static Size GetGlyphSize (Graphics g, CheckBoxState state)
 144                 {
 145                         if (!VisualStyleRenderer.IsSupported)
 146                                 return new Size (13, 13);
 147
 148                         VisualStyleRenderer vsr = GetCheckBoxRenderer (state);
 149
 150                         return vsr.GetPartSize (g, ThemeSizeType.Draw);
 151                 }
 152                 #endregion
 153
 154                 #region Private Static Methods
 155                 private static VisualStyleRenderer GetCheckBoxRenderer (CheckBoxState state)
 156                 {
 157                         switch (state) {
 158                                 case CheckBoxState.CheckedDisabled:
 159                                         return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.CheckedDisabled);
 160                                 case CheckBoxState.CheckedHot:
 161                                         return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.CheckedHot);
 162                                 case CheckBoxState.CheckedNormal:
 163                                         return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.CheckedNormal);
 164                                 case CheckBoxState.CheckedPressed:
 165                                         return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.CheckedPressed);
 166                                 case CheckBoxState.MixedDisabled:
 167                                         return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.MixedDisabled);
 168                                 case CheckBoxState.MixedHot:
 169                                         return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.MixedHot);
 170                                 case CheckBoxState.MixedNormal:
 171                                         return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.MixedNormal);
 172                                 case CheckBoxState.MixedPressed:
 173                                         return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.MixedPressed);
 174                                 case CheckBoxState.UncheckedDisabled:
 175                                         return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.UncheckedDisabled);
 176                                 case CheckBoxState.UncheckedHot:
 177                                         return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.UncheckedHot);
 178                                 case CheckBoxState.UncheckedNormal:
 179                                 default:
 180                                         return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.UncheckedNormal);
 181                                 case CheckBoxState.UncheckedPressed:
 182                                         return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.UncheckedPressed);
 183                         }
 184                 }
 185                 #endregion
 186
 187                 #region Public Static Properties
 188                 public static bool RenderMatchingApplicationState {
 189                         get { return !always_use_visual_styles; }
 190                         set { always_use_visual_styles = !value; }
 191                 }
 192                 #endregion
 193         }
 194 }
 195 #endif