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 using System.Drawing; 30 using System.Windows.Forms.VisualStyles; 31 32 namespace System.Windows.Forms 33 { 34 public sealed class CheckBoxRenderer 35 { 36 private static bool always_use_visual_styles = false; 37 38 #region Private Constructor CheckBoxRenderer()39 private CheckBoxRenderer () {} 40 #endregion 41 42 #region Public Static Methods DrawCheckBox(Graphics g, Point glyphLocation, CheckBoxState state)43 public static void DrawCheckBox (Graphics g, Point glyphLocation, CheckBoxState state) 44 { 45 DrawCheckBox (g, glyphLocation, Rectangle.Empty, String.Empty, null, TextFormatFlags.HorizontalCenter, null, Rectangle.Empty, false, state); 46 } 47 DrawCheckBox(Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, bool focused, CheckBoxState state)48 public static void DrawCheckBox (Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, bool focused, CheckBoxState state) 49 { 50 DrawCheckBox (g, glyphLocation, textBounds, checkBoxText, font, TextFormatFlags.HorizontalCenter, null, Rectangle.Empty, focused, state); 51 } 52 DrawCheckBox(Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, TextFormatFlags flags, bool focused, CheckBoxState state)53 public static void DrawCheckBox (Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, TextFormatFlags flags, bool focused, CheckBoxState state) 54 { 55 DrawCheckBox (g, glyphLocation, textBounds, checkBoxText, font, flags, null, Rectangle.Empty, focused, state); 56 } 57 DrawCheckBox(Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, Image image, Rectangle imageBounds, bool focused, CheckBoxState state)58 public static void DrawCheckBox (Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, Image image, Rectangle imageBounds, bool focused, CheckBoxState state) 59 { 60 DrawCheckBox (g, glyphLocation, textBounds, checkBoxText, font, TextFormatFlags.HorizontalCenter, image, imageBounds, focused, state); 61 } 62 DrawCheckBox(Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, TextFormatFlags flags, Image image, Rectangle imageBounds, bool focused, CheckBoxState state)63 public static void DrawCheckBox (Graphics g, Point glyphLocation, Rectangle textBounds, string checkBoxText, Font font, TextFormatFlags flags, Image image, Rectangle imageBounds, bool focused, CheckBoxState state) 64 { 65 Rectangle bounds = new Rectangle (glyphLocation, GetGlyphSize (g, state)); 66 67 if (Application.RenderWithVisualStyles || always_use_visual_styles == true) { 68 VisualStyleRenderer vsr = GetCheckBoxRenderer (state); 69 70 vsr.DrawBackground (g, bounds); 71 72 if (image != null) 73 vsr.DrawImage (g, imageBounds, image); 74 75 if (focused) 76 ControlPaint.DrawFocusRectangle (g, textBounds); 77 78 if (checkBoxText != String.Empty) 79 if (state == CheckBoxState.CheckedDisabled || state == CheckBoxState.MixedDisabled || state == CheckBoxState.UncheckedDisabled) 80 TextRenderer.DrawText (g, checkBoxText, font, textBounds, SystemColors.GrayText, flags); 81 else 82 TextRenderer.DrawText (g, checkBoxText, font, textBounds, SystemColors.ControlText, flags); 83 } else { 84 switch (state) { 85 case CheckBoxState.CheckedDisabled: 86 case CheckBoxState.MixedDisabled: 87 case CheckBoxState.MixedPressed: 88 ControlPaint.DrawCheckBox (g, bounds, ButtonState.Inactive | ButtonState.Checked); 89 break; 90 case CheckBoxState.CheckedHot: 91 case CheckBoxState.CheckedNormal: 92 ControlPaint.DrawCheckBox (g, bounds, ButtonState.Checked); 93 break; 94 case CheckBoxState.CheckedPressed: 95 ControlPaint.DrawCheckBox (g, bounds, ButtonState.Pushed | ButtonState.Checked); 96 break; 97 case CheckBoxState.MixedHot: 98 case CheckBoxState.MixedNormal: 99 ControlPaint.DrawMixedCheckBox (g, bounds, ButtonState.Checked); 100 break; 101 case CheckBoxState.UncheckedDisabled: 102 case CheckBoxState.UncheckedPressed: 103 ControlPaint.DrawCheckBox (g, bounds, ButtonState.Inactive); 104 break; 105 case CheckBoxState.UncheckedHot: 106 case CheckBoxState.UncheckedNormal: 107 ControlPaint.DrawCheckBox (g, bounds, ButtonState.Normal); 108 break; 109 } 110 111 if (image != null) 112 g.DrawImage (image, imageBounds); 113 114 if (focused) 115 ControlPaint.DrawFocusRectangle (g, textBounds); 116 117 if (checkBoxText != String.Empty) 118 TextRenderer.DrawText (g, checkBoxText, font, textBounds, SystemColors.ControlText, flags); 119 } 120 } 121 IsBackgroundPartiallyTransparent(CheckBoxState state)122 public static bool IsBackgroundPartiallyTransparent (CheckBoxState state) 123 { 124 if (!VisualStyleRenderer.IsSupported) 125 return false; 126 127 VisualStyleRenderer vsr = GetCheckBoxRenderer (state); 128 129 return vsr.IsBackgroundPartiallyTransparent (); 130 } 131 DrawParentBackground(Graphics g, Rectangle bounds, Control childControl)132 public static void DrawParentBackground (Graphics g, Rectangle bounds, Control childControl) 133 { 134 if (!VisualStyleRenderer.IsSupported) 135 return; 136 137 VisualStyleRenderer vsr = new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.UncheckedNormal); 138 139 vsr.DrawParentBackground (g, bounds, childControl); 140 } 141 GetGlyphSize(Graphics g, CheckBoxState state)142 public static Size GetGlyphSize (Graphics g, CheckBoxState state) 143 { 144 if (!VisualStyleRenderer.IsSupported) 145 return new Size (13, 13); 146 147 VisualStyleRenderer vsr = GetCheckBoxRenderer (state); 148 149 return vsr.GetPartSize (g, ThemeSizeType.Draw); 150 } 151 #endregion 152 153 #region Private Static Methods GetCheckBoxRenderer(CheckBoxState state)154 private static VisualStyleRenderer GetCheckBoxRenderer (CheckBoxState state) 155 { 156 switch (state) { 157 case CheckBoxState.CheckedDisabled: 158 return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.CheckedDisabled); 159 case CheckBoxState.CheckedHot: 160 return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.CheckedHot); 161 case CheckBoxState.CheckedNormal: 162 return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.CheckedNormal); 163 case CheckBoxState.CheckedPressed: 164 return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.CheckedPressed); 165 case CheckBoxState.MixedDisabled: 166 return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.MixedDisabled); 167 case CheckBoxState.MixedHot: 168 return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.MixedHot); 169 case CheckBoxState.MixedNormal: 170 return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.MixedNormal); 171 case CheckBoxState.MixedPressed: 172 return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.MixedPressed); 173 case CheckBoxState.UncheckedDisabled: 174 return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.UncheckedDisabled); 175 case CheckBoxState.UncheckedHot: 176 return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.UncheckedHot); 177 case CheckBoxState.UncheckedNormal: 178 default: 179 return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.UncheckedNormal); 180 case CheckBoxState.UncheckedPressed: 181 return new VisualStyleRenderer (VisualStyleElement.Button.CheckBox.UncheckedPressed); 182 } 183 } 184 #endregion 185 186 #region Public Static Properties 187 public static bool RenderMatchingApplicationState { 188 get { return !always_use_visual_styles; } 189 set { always_use_visual_styles = !value; } 190 } 191 #endregion 192 } 193 }