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

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
  21 //
  22 // Authors:
  23 //      Peter Bartok    pbartok@novell.com
  24 //
  25 //
  26
  27 // NOT COMPLETE
  28
  29 using System;
  30 using System.ComponentModel;
  31 using System.ComponentModel.Design;
  32 using System.Drawing;
  33
  34 namespace System.Windows.Forms {
  35         [DefaultProperty("Text")]
  36         [DefaultEvent("MouseDown")]
  37         [Designer ("System.Windows.Forms.Design.NotifyIconDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
  38         [ToolboxItemFilter("System.Windows.Forms", ToolboxItemFilterType.Allow)]
  39         public sealed class NotifyIcon : System.ComponentModel.Component {
  40                 #region Local Variables
  41                 private ContextMenu             context_menu;
  42                 private Icon                    icon;
  43                 private Bitmap                  icon_bitmap;
  44                 private string                  text;
  45                 private bool                    visible;
  46                 private NotifyIconWindow        window;
  47                 private bool                    systray_active;
  48                 private ToolTip                 tooltip;
  49                 #endregion      // Local Variables
  50
  51                 #region NotifyIconWindow Class
  52                 internal class NotifyIconWindow : Control {
  53                         NotifyIcon      owner;
  54                         Rectangle       rect;
  55
  56                         public NotifyIconWindow(NotifyIcon owner) {
  57                                 this.owner = owner;
  58                                 is_visible = false;
  59                                 rect = new Rectangle(0, 0, 1, 1);
  60
  61                                 CreateControl();
  62
  63                                 Paint += new PaintEventHandler(HandlePaint);
  64                                 SizeChanged += new EventHandler(HandleSizeChanged);
  65
  66                                 // Events that need to be sent to our parent
  67                                 Click += new EventHandler(HandleClick);
  68                                 DoubleClick += new EventHandler(HandleDoubleClick);
  69                                 MouseDown +=new MouseEventHandler(HandleMouseDown);
  70                                 MouseUp +=new MouseEventHandler(HandleMouseUp);
  71                                 MouseMove +=new MouseEventHandler(HandleMouseMove);
  72                                 ContextMenu = owner.context_menu;
  73                         }
  74
  75                         protected override CreateParams CreateParams {
  76                                 get {
  77                                         CreateParams cp;
  78
  79                                         cp = base.CreateParams;
  80
  81                                         cp.Parent = IntPtr.Zero;
  82                                         cp.Style = (int)WindowStyles.WS_POPUP;
  83                                         cp.Style |= (int)WindowStyles.WS_CLIPSIBLINGS;
  84
  85                                         cp.ExStyle = (int)(WindowStyles.WS_EX_TOOLWINDOW);
  86
  87                                         return cp;
  88                                 }
  89                         }
  90
  91                         protected override void WndProc(ref Message m) {
  92                                 switch((Msg)m.Msg) {
  93                                         case Msg.WM_NCPAINT: {
  94                                                 PaintEventArgs  paint_event;
  95
  96                                                 paint_event = XplatUI.PaintEventStart(Handle, false);
  97                                                 OnPaint(paint_event);
  98                                                 XplatUI.PaintEventEnd(Handle, false);
  99                                                 break;
 100                                         }
 101
 102                                         case Msg.WM_USER: {
 103                                                 switch ((Msg)m.LParam.ToInt32()) {
 104                                                         case Msg.WM_LBUTTONDOWN: {
 105                                                                 HandleMouseDown(this, new MouseEventArgs(MouseButtons.Left, 1, Control.MousePosition.X, Control.MousePosition.Y, 0));
 106                                                                 return;
 107                                                         }
 108
 109                                                         case Msg.WM_LBUTTONUP: {
 110                                                                 HandleMouseUp(this, new MouseEventArgs(MouseButtons.Left, 1, Control.MousePosition.X, Control.MousePosition.Y, 0));
 111                                                                 HandleClick(this, EventArgs.Empty);
 112                                                                 return;
 113                                                         }
 114
 115                                                         case Msg.WM_LBUTTONDBLCLK: {
 116                                                                 HandleDoubleClick(this, EventArgs.Empty);
 117                                                                 return;
 118                                                         }
 119
 120                                                         case Msg.WM_MOUSEMOVE: {
 121                                                                 HandleMouseMove(this, new MouseEventArgs(MouseButtons.None, 1, Control.MousePosition.X, Control.MousePosition.Y, 0));
 122                                                                 return;
 123                                                         }
 124
 125                                                         case Msg.WM_RBUTTONDOWN: {
 126                                                                 HandleMouseDown(this, new MouseEventArgs(MouseButtons.Right, 1, Control.MousePosition.X, Control.MousePosition.Y, 0));
 127                                                                 return;
 128                                                         }
 129
 130                                                         case Msg.WM_RBUTTONUP: {
 131                                                                 HandleMouseUp(this, new MouseEventArgs(MouseButtons.Right, 1, Control.MousePosition.X, Control.MousePosition.Y, 0));
 132                                                                 HandleClick(this, EventArgs.Empty);
 133                                                                 return;
 134                                                         }
 135
 136                                                         case Msg.WM_RBUTTONDBLCLK: {
 137                                                                 HandleDoubleClick(this, EventArgs.Empty);
 138                                                                 return;
 139                                                         }
 140                                                 }
 141                                                 return;
 142                                         }
 143                                 }
 144                                 base.WndProc (ref m);
 145                         }
 146
 147                         internal void CalculateIconRect() {
 148                                 if (owner != null && owner.icon != null) {
 149                                         int             x;
 150                                         int             y;
 151                                         int             size;
 152
 153                                         // Icons are always square. Try to center them in the window
 154                                         if (ClientRectangle.Width < ClientRectangle.Height) {
 155                                                 size = ClientRectangle.Width;
 156                                         } else {
 157                                                 size = ClientRectangle.Height;
 158                                         }
 159                                         x = this.ClientRectangle.Width / 2 - size / 2;
 160                                         y = this.ClientRectangle.Height / 2 - size / 2;
 161                                         rect = new Rectangle(x, y, size, size);
 162
 163                                         // Force our window to be square
 164                                         if (Width != size) {
 165                                                 this.Width = size;
 166                                         }
 167
 168                                         if (Height != size) {
 169                                                 this.Height = size;
 170                                         }
 171                                 }
 172                         }
 173
 174                         private void HandlePaint(object sender, PaintEventArgs e) {
 175                                 if (owner.icon != null) {
 176                                         e.Graphics.FillRectangle(ThemeEngine.Current.ResPool.GetSolidBrush(SystemColors.Window), rect);
 177                                         e.Graphics.DrawImage(owner.icon_bitmap, rect);
 178
 179                                 }
 180                         }
 181
 182                         private void HandleSizeChanged(object sender, EventArgs e) {
 183                                 CalculateIconRect();
 184                         }
 185
 186                         private void HandleClick(object sender, EventArgs e) {
 187                                 if (owner.Click != null) {
 188                                         owner.Click(owner, e);
 189                                 }
 190                         }
 191
 192                         private void HandleDoubleClick(object sender, EventArgs e) {
 193                                 if (owner.DoubleClick != null) {
 194                                         owner.DoubleClick(owner, e);
 195                                 }
 196                         }
 197
 198                         private void HandleMouseDown(object sender, MouseEventArgs e) {
 199                                 if (owner.MouseDown != null) {
 200                                         owner.MouseDown(owner, e);
 201                                 }
 202                         }
 203
 204                         private void HandleMouseUp(object sender, MouseEventArgs e) {
 205                                 if (owner.context_menu != null) {
 206                                         owner.context_menu.Show(this, new Point(e.X, e.Y));
 207                                 }
 208
 209                                 if (owner.MouseUp != null) {
 210                                         owner.MouseUp(owner, e);
 211                                 }
 212                         }
 213
 214                         private void HandleMouseMove(object sender, MouseEventArgs e) {
 215                                 if (owner.MouseMove != null) {
 216                                         owner.MouseMove(owner, e);
 217                                 }
 218                         }
 219                 }
 220                 #endregion      // NotifyIconWindow Class
 221
 222                 #region Public Constructors
 223                 public NotifyIcon() {
 224                         window = new NotifyIconWindow(this);
 225                         systray_active = false;
 226                 }
 227
 228                 public NotifyIcon(System.ComponentModel.IContainer container) : this() {
 229                 }
 230                 #endregion      // Public Constructors
 231
 232                 #region Private Methods
 233                 private void ShowSystray(bool property_changed) {
 234                         if (property_changed) {
 235                                 window.CalculateIconRect();
 236                         }
 237
 238                         if (systray_active) {
 239                                 if (property_changed) {
 240                                         UpdateSystray();
 241                                 }
 242                                 return;
 243                         }
 244
 245                         if (icon == null) {
 246                                 return;
 247                         }
 248
 249                         icon_bitmap = icon.ToBitmap();
 250
 251                         systray_active = true;
 252                         XplatUI.SystrayAdd(window.Handle, text, icon, out tooltip);
 253                 }
 254
 255                 private void HideSystray() {
 256                         if (!systray_active) {
 257                                 return;
 258                         }
 259
 260                         systray_active = false;
 261                         XplatUI.SystrayRemove(window.Handle, ref tooltip);
 262                 }
 263
 264                 private void UpdateSystray() {
 265                         if (icon_bitmap != null) {
 266                                 icon_bitmap.Dispose();
 267                         }
 268
 269                         if (icon != null) {
 270                                 icon_bitmap = icon.ToBitmap();
 271                         }
 272
 273                         XplatUI.SystrayChange(window.Handle, text, icon, ref tooltip);
 274                         window.Invalidate();
 275                 }
 276                 #endregion      // Private Methods
 277
 278                 #region Public Instance Properties
 279                 [DefaultValue(null)]
 280                 public ContextMenu ContextMenu {
 281                         get {
 282                                 return context_menu;
 283                         }
 284
 285                         set {
 286                                 if (context_menu != value) {
 287                                         context_menu = value;
 288                                         window.ContextMenu = value;
 289                                 }
 290                         }
 291                 }
 292
 293                 [Localizable(true)]
 294                 [DefaultValue(null)]
 295                 public Icon Icon {
 296                         get {
 297                                 return icon;
 298                         }
 299
 300                         set {
 301                                 if (icon != value) {
 302                                         icon = value;
 303                                         ShowSystray(true);
 304                                 }
 305                         }
 306                 }
 307
 308                 [Localizable(true)]
 309                 public string Text {
 310                         get {
 311                                 return text;
 312                         }
 313
 314                         set {
 315                                 if (text != value) {
 316                                         if (value.Length >= 64) {
 317                                                 throw new ArgumentException("ToolTip length must be less than 64 characters long", "Text");
 318                                         }
 319                                         text = value;
 320                                         if (text == string.Empty && icon == null) {
 321                                                 HideSystray();
 322                                         } else {
 323                                                 ShowSystray(true);
 324                                         }
 325                                 }
 326                         }
 327                 }
 328
 329                 [Localizable(true)]
 330                 [DefaultValue(false)]
 331                 public bool Visible {
 332                         get {
 333                                 return visible;
 334                         }
 335
 336                         set {
 337                                 if (visible != value) {
 338                                         visible = value;
 339
 340                                         // Let our control know, too
 341                                         window.is_visible = value;
 342
 343                                         if (visible) {
 344                                                 ShowSystray(false);
 345                                         } else {
 346                                                 HideSystray();
 347                                         }
 348                                 }
 349                         }
 350                 }
 351                 #endregion      // Public Instance Properties
 352
 353                 #region Protected Instance Methods
 354                 protected override void Dispose(bool disposing) {
 355                         if (icon_bitmap != null) {
 356                                 icon_bitmap.Dispose();
 357                         }
 358
 359                         if (disposing)
 360                                 icon = null;
 361
 362                         base.Dispose (disposing);
 363                 }
 364
 365                 #endregion      // Protected Instance Methods
 366
 367                 #region Events
 368                 [Category("Action")]
 369                 public event EventHandler       Click;
 370
 371                 [Category("Action")]
 372                 public event EventHandler       DoubleClick;
 373
 374                 public event MouseEventHandler  MouseDown;
 375                 public event MouseEventHandler  MouseMove;
 376                 public event MouseEventHandler  MouseUp;
 377                 #endregion      // Events
 378         }
 379 }