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

   1 //
   2 // ToolStripLabel.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 Jonathan Pobst
  24 //
  25 // Authors:
  26 //      Jonathan Pobst (monkey@jpobst.com)
  27 //
  28 #if NET_2_0
  29
  30 using System.Drawing;
  31 using System.ComponentModel;
  32 using System.Windows.Forms.Design;
  33
  34 namespace System.Windows.Forms
  35 {
  36         [ToolStripItemDesignerAvailability (ToolStripItemDesignerAvailability.ToolStrip)]
  37         public class ToolStripLabel : ToolStripItem
  38         {
  39                 private Color active_link_color;
  40                 private bool is_link;
  41                 private LinkBehavior link_behavior;
  42                 private Color link_color;
  43                 private bool link_visited;
  44                 private Color visited_link_color;
  45
  46                 #region UIA FrameWork Events
  47 #if NET_2_0
  48                 static object UIAIsLinkChangedEvent = new object ();
  49
  50                 internal event EventHandler UIAIsLinkChanged {
  51                         add { Events.AddHandler (UIAIsLinkChangedEvent, value); }
  52                         remove { Events.RemoveHandler (UIAIsLinkChangedEvent, value); }
  53                 }
  54
  55                 internal void OnUIAIsLinkChanged (EventArgs e)
  56                 {
  57                         EventHandler eh = (EventHandler) Events [UIAIsLinkChangedEvent];
  58                         if (eh != null)
  59                                 eh (this, e);
  60                 }
  61 #endif
  62                 #endregion
  63
  64                 #region Public Constructors
  65                 public ToolStripLabel ()
  66                         : this (null, null, false, null, String.Empty)
  67                 {
  68                 }
  69
  70                 public ToolStripLabel (Image image)
  71                         : this (null, image, false, null, String.Empty)
  72                 {
  73                 }
  74
  75                 public ToolStripLabel (string text)
  76                         : this (text, null, false, null, String.Empty)
  77                 {
  78                 }
  79
  80                 public ToolStripLabel (string text, Image image)
  81                         : this (text, image, false, null, String.Empty)
  82                 {
  83                 }
  84
  85                 public ToolStripLabel (string text, Image image, bool isLink)
  86                         : this (text, image, isLink, null, String.Empty)
  87                 {
  88                 }
  89
  90                 public ToolStripLabel (string text, Image image, bool isLink, EventHandler onClick)
  91                         : this (text, image, isLink, onClick, String.Empty)
  92                 {
  93                 }
  94
  95                 public ToolStripLabel (string text, Image image, bool isLink, EventHandler onClick, string name)
  96                         : base (text, image, onClick, name)
  97                 {
  98                         this.active_link_color = Color.Red;
  99                         this.is_link = isLink;
 100                         this.link_behavior = LinkBehavior.SystemDefault;
 101                         this.link_color = Color.FromArgb (0, 0, 255);
 102                         this.link_visited = false;
 103                         this.visited_link_color = Color.FromArgb (128, 0, 128);
 104                 }
 105                 #endregion
 106
 107                 #region Public Properties
 108                 public Color ActiveLinkColor {
 109                         get { return this.active_link_color; }
 110                         set {
 111                                 this.active_link_color = value;
 112                                 this.Invalidate ();
 113                         }
 114                 }
 115
 116                 public override bool CanSelect { get { return false; } }
 117
 118                 [DefaultValue (false)]
 119                 public bool IsLink {
 120                         get { return this.is_link; }
 121                         set {
 122                                 this.is_link = value;
 123                                 this.Invalidate ();
 124 #if NET_2_0
 125                                 // UIA Framework Event: IsLink Changed
 126                                 OnUIAIsLinkChanged (EventArgs.Empty);
 127 #endif
 128                         }
 129                 }
 130
 131                 [DefaultValue (LinkBehavior.SystemDefault)]
 132                 public LinkBehavior LinkBehavior {
 133                         get { return this.link_behavior; }
 134                         set {
 135                                 this.link_behavior = value;
 136                                 this.Invalidate ();
 137                         }
 138                 }
 139
 140                 public Color LinkColor {
 141                         get { return this.link_color; }
 142                         set {
 143                                 this.link_color = value;
 144                                 this.Invalidate ();
 145                         }
 146                 }
 147
 148                 [DefaultValue (false)]
 149                 public bool LinkVisited {
 150                         get { return this.link_visited; }
 151                         set {
 152                                 this.link_visited = value;
 153                                 this.Invalidate ();
 154                         }
 155                 }
 156
 157                 public Color VisitedLinkColor
 158                 {
 159                         get { return this.visited_link_color; }
 160                         set {
 161                                 this.visited_link_color = value;
 162                                 this.Invalidate ();
 163                         }
 164                 }
 165                 #endregion
 166
 167                 #region Protected Methods
 168                 [EditorBrowsable (EditorBrowsableState.Advanced)]
 169                 protected override AccessibleObject CreateAccessibilityInstance ()
 170                 {
 171                         ToolStripItemAccessibleObject ao = new ToolStripItemAccessibleObject (this);
 172
 173                         ao.role = AccessibleRole.StaticText;
 174                         ao.state = AccessibleStates.ReadOnly;
 175
 176                         return ao;
 177                 }
 178
 179                 protected override void OnFontChanged (EventArgs e)
 180                 {
 181                         base.OnFontChanged (e);
 182                 }
 183
 184                 protected override void OnMouseEnter (EventArgs e)
 185                 {
 186                         base.OnMouseEnter (e);
 187                 }
 188
 189                 protected override void OnMouseLeave (EventArgs e)
 190                 {
 191                         base.OnMouseLeave (e);
 192                 }
 193
 194                 protected override void OnPaint (System.Windows.Forms.PaintEventArgs e)
 195                 {
 196                         if (this.Owner != null) {
 197                                 Color font_color = this.Enabled ? this.ForeColor : SystemColors.GrayText;
 198                                 Image draw_image = this.Enabled ? this.Image : ToolStripRenderer.CreateDisabledImage (this.Image);
 199
 200                                 this.Owner.Renderer.DrawLabelBackground (new System.Windows.Forms.ToolStripItemRenderEventArgs (e.Graphics, this));
 201
 202                                 Rectangle text_layout_rect;
 203                                 Rectangle image_layout_rect;
 204
 205                                 this.CalculateTextAndImageRectangles (out text_layout_rect, out image_layout_rect);
 206
 207                                 if (this.IsOnDropDown) {
 208                                         if (this.ShowMargin)
 209                                                 text_layout_rect = new Rectangle (35, text_layout_rect.Top, text_layout_rect.Width, text_layout_rect.Height);
 210                                         else
 211                                                 text_layout_rect = new Rectangle (7, text_layout_rect.Top, text_layout_rect.Width, text_layout_rect.Height);
 212                                         if (image_layout_rect != Rectangle.Empty)
 213                                                 image_layout_rect = new Rectangle (new Point (4, 3), base.GetImageSize ());
 214                                 }
 215
 216                                 if (image_layout_rect != Rectangle.Empty)
 217                                         this.Owner.Renderer.DrawItemImage (new System.Windows.Forms.ToolStripItemImageRenderEventArgs (e.Graphics, this, draw_image, image_layout_rect));
 218                                 if (text_layout_rect != Rectangle.Empty)
 219                                         if (this.is_link) {
 220                                                 if (this.Pressed)               // Mouse Down
 221                                                 {
 222                                                         switch (this.link_behavior) {
 223                                                                 case LinkBehavior.SystemDefault:
 224                                                                 case LinkBehavior.AlwaysUnderline:
 225                                                                 case LinkBehavior.HoverUnderline:
 226                                                                         this.Owner.Renderer.DrawItemText (new System.Windows.Forms.ToolStripItemTextRenderEventArgs (e.Graphics, this, this.Text, text_layout_rect, this.active_link_color, new Font (this.Font, FontStyle.Underline), this.TextAlign));
 227                                                                         break;
 228                                                                 case LinkBehavior.NeverUnderline:
 229                                                                         this.Owner.Renderer.DrawItemText (new System.Windows.Forms.ToolStripItemTextRenderEventArgs (e.Graphics, this, this.Text, text_layout_rect, this.active_link_color, this.Font, this.TextAlign));
 230                                                                         break;
 231                                                         }
 232                                                 }
 233                                                 else if (this.Selected)         // Hover
 234                                                 {
 235                                                         switch (this.link_behavior) {
 236                                                                 case LinkBehavior.SystemDefault:
 237                                                                 case LinkBehavior.AlwaysUnderline:
 238                                                                 case LinkBehavior.HoverUnderline:
 239                                                                         this.Owner.Renderer.DrawItemText (new System.Windows.Forms.ToolStripItemTextRenderEventArgs (e.Graphics, this, this.Text, text_layout_rect, this.link_color, new Font (this.Font, FontStyle.Underline), this.TextAlign));
 240                                                                         break;
 241                                                                 case LinkBehavior.NeverUnderline:
 242                                                                         this.Owner.Renderer.DrawItemText (new System.Windows.Forms.ToolStripItemTextRenderEventArgs (e.Graphics, this, this.Text, text_layout_rect, this.link_color, this.Font, this.TextAlign));
 243                                                                         break;
 244                                                         }
 245                                                 }
 246                                                 else {
 247
 248                                                         if (this.link_visited)          // Normal, Visited
 249                                                         {
 250                                                                 switch (this.link_behavior) {
 251                                                                         case LinkBehavior.SystemDefault:
 252                                                                         case LinkBehavior.AlwaysUnderline:
 253                                                                                 this.Owner.Renderer.DrawItemText (new System.Windows.Forms.ToolStripItemTextRenderEventArgs (e.Graphics, this, this.Text, text_layout_rect, this.visited_link_color, new Font (this.Font, FontStyle.Underline), this.TextAlign));
 254                                                                                 break;
 255                                                                         case LinkBehavior.NeverUnderline:
 256                                                                         case LinkBehavior.HoverUnderline:
 257                                                                                 this.Owner.Renderer.DrawItemText (new System.Windows.Forms.ToolStripItemTextRenderEventArgs (e.Graphics, this, this.Text, text_layout_rect, this.visited_link_color, this.Font, this.TextAlign));
 258                                                                                 break;
 259                                                                 }
 260                                                         }
 261                                                         else                            // Normal
 262                                                         {
 263                                                                 switch (this.link_behavior) {
 264                                                                         case LinkBehavior.SystemDefault:
 265                                                                         case LinkBehavior.AlwaysUnderline:
 266                                                                                 this.Owner.Renderer.DrawItemText (new System.Windows.Forms.ToolStripItemTextRenderEventArgs (e.Graphics, this, this.Text, text_layout_rect, this.link_color, new Font (this.Font, FontStyle.Underline), this.TextAlign));
 267                                                                                 break;
 268                                                                         case LinkBehavior.NeverUnderline:
 269                                                                         case LinkBehavior.HoverUnderline:
 270                                                                                 this.Owner.Renderer.DrawItemText (new System.Windows.Forms.ToolStripItemTextRenderEventArgs (e.Graphics, this, this.Text, text_layout_rect, this.link_color, this.Font, this.TextAlign));
 271                                                                                 break;
 272                                                                 }
 273
 274                                                         }
 275                                                 }
 276                                         } else
 277                                                 this.Owner.Renderer.DrawItemText (new System.Windows.Forms.ToolStripItemTextRenderEventArgs (e.Graphics, this, this.Text, text_layout_rect, font_color, this.Font, this.TextAlign));
 278                         }
 279
 280                         // call Paint handlers last.
 281                         base.OnPaint (e);
 282                 }
 283
 284                 protected internal override bool ProcessMnemonic (char charCode)
 285                 {
 286                         this.Parent.SelectNextToolStripItem (this, true);
 287                         return true;
 288                 }
 289                 #endregion
 290         }
 291 }
 292 #endif