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 Public Constructors
  47                 public ToolStripLabel ()
  48                         : this (null, null, false, null, String.Empty)
  49                 {
  50                 }
  51
  52                 public ToolStripLabel (Image image)
  53                         : this (null, image, false, null, String.Empty)
  54                 {
  55                 }
  56
  57                 public ToolStripLabel (string text)
  58                         : this (text, null, false, null, String.Empty)
  59                 {
  60                 }
  61
  62                 public ToolStripLabel (string text, Image image)
  63                         : this (text, image, false, null, String.Empty)
  64                 {
  65                 }
  66
  67                 public ToolStripLabel (string text, Image image, bool isLink)
  68                         : this (text, image, isLink, null, String.Empty)
  69                 {
  70                 }
  71
  72                 public ToolStripLabel (string text, Image image, bool isLink, EventHandler onClick)
  73                         : this (text, image, isLink, onClick, String.Empty)
  74                 {
  75                 }
  76
  77                 public ToolStripLabel (string text, Image image, bool isLink, EventHandler onClick, string name)
  78                         : base (text, image, onClick, name)
  79                 {
  80                         this.active_link_color = Color.Red;
  81                         this.is_link = isLink;
  82                         this.link_behavior = LinkBehavior.SystemDefault;
  83                         this.link_color = Color.FromArgb (0, 0, 255);
  84                         this.link_visited = false;
  85                         this.visited_link_color = Color.FromArgb (128, 0, 128);
  86                 }
  87                 #endregion
  88
  89                 #region Public Properties
  90                 public Color ActiveLinkColor {
  91                         get { return this.active_link_color; }
  92                         set {
  93                                 this.active_link_color = value;
  94                                 this.Invalidate ();
  95                         }
  96                 }
  97
  98                 public override bool CanSelect { get { return false; } }
  99
 100                 [DefaultValue (false)]
 101                 public bool IsLink {
 102                         get { return this.is_link; }
 103                         set {
 104                                 this.is_link = value;
 105                                 this.Invalidate ();
 106                         }
 107                 }
 108
 109                 [DefaultValue (LinkBehavior.SystemDefault)]
 110                 public LinkBehavior LinkBehavior {
 111                         get { return this.link_behavior; }
 112                         set {
 113                                 this.link_behavior = value;
 114                                 this.Invalidate ();
 115                         }
 116                 }
 117
 118                 public Color LinkColor {
 119                         get { return this.link_color; }
 120                         set {
 121                                 this.link_color = value;
 122                                 this.Invalidate ();
 123                         }
 124                 }
 125
 126                 [DefaultValue (false)]
 127                 public bool LinkVisited {
 128                         get { return this.link_visited; }
 129                         set {
 130                                 this.link_visited = value;
 131                                 this.Invalidate ();
 132                         }
 133                 }
 134
 135                 public Color VisitedLinkColor
 136                 {
 137                         get { return this.visited_link_color; }
 138                         set {
 139                                 this.visited_link_color = value;
 140                                 this.Invalidate ();
 141                         }
 142                 }
 143                 #endregion
 144
 145                 #region Protected Methods
 146                 [EditorBrowsable (EditorBrowsableState.Advanced)]
 147                 protected override AccessibleObject CreateAccessibilityInstance ()
 148                 {
 149                         ToolStripItemAccessibleObject ao = new ToolStripItemAccessibleObject (this);
 150
 151                         ao.role = AccessibleRole.StaticText;
 152                         ao.state = AccessibleStates.ReadOnly;
 153
 154                         return ao;
 155                 }
 156
 157                 protected override void OnFontChanged (EventArgs e)
 158                 {
 159                         base.OnFontChanged (e);
 160                 }
 161
 162                 protected override void OnMouseEnter (EventArgs e)
 163                 {
 164                         base.OnMouseEnter (e);
 165                 }
 166
 167                 protected override void OnMouseLeave (EventArgs e)
 168                 {
 169                         base.OnMouseLeave (e);
 170                 }
 171
 172                 protected override void OnPaint (System.Windows.Forms.PaintEventArgs e)
 173                 {
 174                         base.OnPaint (e);
 175
 176                         if (this.Owner != null) {
 177                                 Color font_color = this.Enabled ? this.ForeColor : SystemColors.GrayText;
 178                                 Image draw_image = this.Enabled ? this.Image : ToolStripRenderer.CreateDisabledImage (this.Image);
 179
 180                                 this.Owner.Renderer.DrawLabelBackground (new System.Windows.Forms.ToolStripItemRenderEventArgs (e.Graphics, this));
 181
 182                                 Rectangle text_layout_rect;
 183                                 Rectangle image_layout_rect;
 184
 185                                 this.CalculateTextAndImageRectangles (out text_layout_rect, out image_layout_rect);
 186
 187                                 if (image_layout_rect != Rectangle.Empty)
 188                                         this.Owner.Renderer.DrawItemImage (new System.Windows.Forms.ToolStripItemImageRenderEventArgs (e.Graphics, this, draw_image, image_layout_rect));
 189                                 if (text_layout_rect != Rectangle.Empty)
 190                                         if (this.is_link) {
 191                                                 if (this.Pressed)               // Mouse Down
 192                                                 {
 193                                                         switch (this.link_behavior) {
 194                                                                 case LinkBehavior.SystemDefault:
 195                                                                 case LinkBehavior.AlwaysUnderline:
 196                                                                 case LinkBehavior.HoverUnderline:
 197                                                                         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));
 198                                                                         break;
 199                                                                 case LinkBehavior.NeverUnderline:
 200                                                                         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));
 201                                                                         break;
 202                                                         }
 203                                                 }
 204                                                 else if (this.Selected)         // Hover
 205                                                 {
 206                                                         switch (this.link_behavior) {
 207                                                                 case LinkBehavior.SystemDefault:
 208                                                                 case LinkBehavior.AlwaysUnderline:
 209                                                                 case LinkBehavior.HoverUnderline:
 210                                                                         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));
 211                                                                         break;
 212                                                                 case LinkBehavior.NeverUnderline:
 213                                                                         this.Owner.Renderer.DrawItemText (new System.Windows.Forms.ToolStripItemTextRenderEventArgs (e.Graphics, this, this.Text, text_layout_rect, this.link_color, this.Font, this.TextAlign));
 214                                                                         break;
 215                                                         }
 216                                                 }
 217                                                 else {
 218
 219                                                         if (this.link_visited)          // Normal, Visited
 220                                                         {
 221                                                                 switch (this.link_behavior) {
 222                                                                         case LinkBehavior.SystemDefault:
 223                                                                         case LinkBehavior.AlwaysUnderline:
 224                                                                                 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));
 225                                                                                 break;
 226                                                                         case LinkBehavior.NeverUnderline:
 227                                                                         case LinkBehavior.HoverUnderline:
 228                                                                                 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));
 229                                                                                 break;
 230                                                                 }
 231                                                         }
 232                                                         else                            // Normal
 233                                                         {
 234                                                                 switch (this.link_behavior) {
 235                                                                         case LinkBehavior.SystemDefault:
 236                                                                         case LinkBehavior.AlwaysUnderline:
 237                                                                                 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));
 238                                                                                 break;
 239                                                                         case LinkBehavior.NeverUnderline:
 240                                                                         case LinkBehavior.HoverUnderline:
 241                                                                                 this.Owner.Renderer.DrawItemText (new System.Windows.Forms.ToolStripItemTextRenderEventArgs (e.Graphics, this, this.Text, text_layout_rect, this.link_color, this.Font, this.TextAlign));
 242                                                                                 break;
 243                                                                 }
 244
 245                                                         }
 246                                                 }
 247                                         } else
 248                                                 this.Owner.Renderer.DrawItemText (new System.Windows.Forms.ToolStripItemTextRenderEventArgs (e.Graphics, this, this.Text, text_layout_rect, font_color, this.Font, this.TextAlign));
 249                         }
 250                 }
 251
 252                 protected internal override bool ProcessMnemonic (char charCode)
 253                 {
 254                         this.Parent.SelectNextToolStripItem (this, true);
 255                         return true;
 256                 }
 257                 #endregion
 258         }
 259 }
 260 #endif