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

   1 //
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   3 // a copy of this software and associated documentation files (the
   4 // "Software"), to deal in the Software without restriction, including
   5 // without limitation the rights to use, copy, modify, merge, publish,
   6 // distribute, sublicense, and/or sell copies of the Software, and to
   7 // permit persons to whom the Software is furnished to do so, subject to
   8 // the following conditions:
   9 //
  10 // The above copyright notice and this permission notice shall be
  11 // included in all copies or substantial portions of the Software.
  12 //
  13 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  14 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  15 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  16 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  17 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  18 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  19 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  20 //
  21 // Copyright (c) 2004-2005 Novell, Inc.
  22 //
  23 // Authors:
  24 //      Peter Bartok    pbartok@novell.com
  25 //
  26
  27 using System.ComponentModel;
  28 using System.Drawing;
  29 using System.Drawing.Text;
  30 using System.Runtime.InteropServices;
  31
  32 namespace System.Windows.Forms {
  33         [ClassInterface (ClassInterfaceType.AutoDispatch)]
  34         [ComVisible (true)]
  35         [Designer ("System.Windows.Forms.Design.ButtonBaseDesigner, " + Consts.AssemblySystem_Design,
  36                    "System.ComponentModel.Design.IDesigner")]
  37         public class Button : ButtonBase, IButtonControl {
  38                 #region Local variables
  39                 DialogResult    dialog_result;
  40                 #endregion      // Local variables
  41
  42                 #region Public Constructors
  43                 public Button ()
  44                 {
  45                         dialog_result = DialogResult.None;
  46                         SetStyle (ControlStyles.StandardDoubleClick, false);
  47                 }
  48                 #endregion      // Public Constructors
  49
  50                 #region Public Properties
  51                 [Browsable (true)]
  52                 [Localizable (true)]
  53                 [DefaultValue (AutoSizeMode.GrowOnly)]
  54                 [MWFCategory("Layout")]
  55                 public AutoSizeMode AutoSizeMode {
  56                         get { return base.GetAutoSizeMode (); }
  57                         set { base.SetAutoSizeMode (value); }
  58                 }
  59
  60                 [DefaultValue (DialogResult.None)]
  61                 [MWFCategory("Behavior")]
  62                 public virtual DialogResult DialogResult {      // IButtonControl
  63                         get { return dialog_result; }
  64                         set { dialog_result = value; }
  65                 }
  66                 #endregion      // Public Properties
  67
  68                 #region Protected Properties
  69                 protected override CreateParams CreateParams {
  70                         get { return base.CreateParams; }
  71                 }
  72                 #endregion      // Protected Properties
  73
  74                 #region Public Methods
  75                 public virtual void NotifyDefault (bool value)  // IButtonControl
  76                 {
  77                         this.IsDefault = value;
  78                 }
  79
  80                 public void PerformClick ()                     // IButtonControl
  81                 {
  82                         if (CanSelect)
  83                                 OnClick (EventArgs.Empty);
  84                 }
  85
  86                 public override string ToString ()
  87                 {
  88                         return base.ToString () + ", Text: " + this.Text;
  89                 }
  90                 #endregion      // Public Methods
  91
  92                 #region Protected Methods
  93                 protected override void OnClick (EventArgs e)
  94                 {
  95                         if (dialog_result != DialogResult.None) {
  96                                 Form p = FindForm ();
  97
  98                                 if (p != null)
  99                                         p.DialogResult = dialog_result;
 100                         }
 101
 102                         base.OnClick (e);
 103                 }
 104
 105                 protected override void OnFontChanged (EventArgs e)
 106                 {
 107                         base.OnFontChanged (e);
 108                 }
 109
 110                 protected override void OnMouseEnter (EventArgs e)
 111                 {
 112                         base.OnMouseEnter (e);
 113                 }
 114
 115                 protected override void OnMouseLeave (EventArgs e)
 116                 {
 117                         base.OnMouseLeave (e);
 118                 }
 119
 120                 protected override void OnMouseUp (MouseEventArgs mevent)
 121                 {
 122                         base.OnMouseUp (mevent);
 123                 }
 124
 125                 protected override void OnTextChanged (EventArgs e)
 126                 {
 127                         base.OnTextChanged (e);
 128                 }
 129
 130                 protected override bool ProcessMnemonic (char charCode)
 131                 {
 132                         if (this.UseMnemonic && IsMnemonic (charCode, Text) == true) {
 133                                 PerformClick ();
 134                                 return true;
 135                         }
 136
 137                         return base.ProcessMnemonic (charCode);
 138                 }
 139
 140                 protected override void WndProc (ref Message m)
 141                 {
 142                         base.WndProc (ref m);
 143                 }
 144                 #endregion      // Protected Methods
 145
 146                 #region Events
 147                 [Browsable (false)]
 148                 [EditorBrowsable (EditorBrowsableState.Advanced)]
 149                 public new event EventHandler DoubleClick {
 150                         add { base.DoubleClick += value; }
 151                         remove { base.DoubleClick -= value; }
 152                 }
 153
 154                 [Browsable (false)]
 155                 [EditorBrowsable (EditorBrowsableState.Advanced)]
 156                 public new event MouseEventHandler MouseDoubleClick {
 157                         add { base.MouseDoubleClick += value; }
 158                         remove { base.MouseDoubleClick -= value; }
 159                 }
 160                 #endregion      // Events
 161
 162                 #region Internal methods
 163                 internal override void Draw (PaintEventArgs pevent)
 164                 {
 165                         // System style does not use any of the new 2.0 stuff
 166                         if (this.FlatStyle == FlatStyle.System) {
 167                                 base.Draw (pevent);
 168                                 return;
 169                         }
 170
 171                         // FIXME: This should be called every time something that can affect it
 172                         // is changed, not every paint.  Can only change so many things at a time.
 173
 174                         // Figure out where our text and image should go
 175                         Rectangle text_rectangle;
 176                         Rectangle image_rectangle;
 177
 178                         ThemeEngine.Current.CalculateButtonTextAndImageLayout (this, out text_rectangle, out image_rectangle);
 179
 180                         // Draw our button
 181                         if (this.FlatStyle == FlatStyle.Standard)
 182                                 ThemeEngine.Current.DrawButton (pevent.Graphics, this, text_rectangle, image_rectangle, pevent.ClipRectangle);
 183                         else if (this.FlatStyle == FlatStyle.Flat)
 184                                 ThemeEngine.Current.DrawFlatButton (pevent.Graphics, this, text_rectangle, image_rectangle, pevent.ClipRectangle);
 185                         else if (this.FlatStyle == FlatStyle.Popup)
 186                                 ThemeEngine.Current.DrawPopupButton (pevent.Graphics, this, text_rectangle, image_rectangle, pevent.ClipRectangle);
 187                 }
 188
 189                 internal override Size GetPreferredSizeCore (Size proposedSize)
 190                 {
 191                         if (this.AutoSize)
 192                                 return ThemeEngine.Current.CalculateButtonAutoSize (this);
 193
 194                         return base.GetPreferredSizeCore (proposedSize);
 195                 }
 196                 #endregion      // Internal methods
 197         }
 198 }