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

   1 // System.Windows.Forms.ToolBar.cs
   2 //
   3 // Permission is hereby granted, free of charge, to any person obtaining
   4 // a copy of this software and associated documentation files (the
   5 // "Software"), to deal in the Software without restriction, including
   6 // without limitation the rights to use, copy, modify, merge, publish,
   7 // distribute, sublicense, and/or sell copies of the Software, and to
   8 // permit persons to whom the Software is furnished to do so, subject to
   9 // the following conditions:
  10 //
  11 // The above copyright notice and this permission notice shall be
  12 // included in all copies or substantial portions of the Software.
  13 //
  14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  15 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  16 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  17 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  18 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  19 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  20 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  21 //
  22 // Author:
  23 //      Ravindra (rkumar@novell.com)
  24 //      Mike Kestner <mkestner@novell.com>
  25 //
  26 // TODO:
  27 //   - Tooltip
  28 //
  29 // Copyright (C) 2004-2006  Novell, Inc. (http://www.novell.com)
  30 //
  31
  32
  33 // NOT COMPLETE
  34
  35 using System.Collections;
  36 using System.ComponentModel;
  37 using System.ComponentModel.Design;
  38 using System.Drawing;
  39 using System.Drawing.Imaging;
  40 using System.Runtime.InteropServices;
  41
  42 namespace System.Windows.Forms
  43 {
  44         [DefaultEvent ("ButtonClick")]
  45         [DefaultProperty ("Buttons")]
  46         [Designer ("System.Windows.Forms.Design.ToolBarDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
  47         public class ToolBar : Control
  48         {
  49                 #region Instance Variables
  50                 bool size_specified = false;
  51                 ToolBarButton current_button;
  52                 #endregion Instance Variables
  53
  54                 #region Events
  55                 [Browsable (false)]
  56                 [EditorBrowsable (EditorBrowsableState.Never)]
  57                 public new event EventHandler BackColorChanged {
  58                         add { base.BackColorChanged += value; }
  59                         remove { base.BackColorChanged -= value; }
  60                 }
  61
  62                 [Browsable (false)]
  63                 [EditorBrowsable (EditorBrowsableState.Never)]
  64                 public new event EventHandler BackgroundImageChanged {
  65                         add { base.BackgroundImageChanged += value; }
  66                         remove { base.BackgroundImageChanged -= value; }
  67                 }
  68
  69                 public event ToolBarButtonClickEventHandler ButtonClick;
  70                 public event ToolBarButtonClickEventHandler ButtonDropDown;
  71
  72                 [Browsable (false)]
  73                 [EditorBrowsable (EditorBrowsableState.Never)]
  74                 public new event EventHandler ForeColorChanged {
  75                         add { base.ForeColorChanged += value; }
  76                         remove { base.ForeColorChanged -= value; }
  77                 }
  78
  79                 [Browsable (false)]
  80                 [EditorBrowsable (EditorBrowsableState.Never)]
  81                 public new event EventHandler ImeModeChanged {
  82                         add { base.ImeModeChanged += value; }
  83                         remove { base.ImeModeChanged -= value; }
  84                 }
  85
  86                 [Browsable (false)]
  87                 [EditorBrowsable (EditorBrowsableState.Never)]
  88                 public new event PaintEventHandler Paint {
  89                         add { base.Paint += value; }
  90                         remove { base.Paint -= value; }
  91                 }
  92
  93                 [Browsable (false)]
  94                 [EditorBrowsable (EditorBrowsableState.Never)]
  95                 public new event EventHandler RightToLeftChanged {
  96                         add { base.RightToLeftChanged += value; }
  97                         remove { base.RightToLeftChanged -= value; }
  98                 }
  99
 100                 [Browsable (false)]
 101                 [EditorBrowsable (EditorBrowsableState.Never)]
 102                 public new event EventHandler TextChanged {
 103                         add { base.TextChanged += value; }
 104                         remove { base.TextChanged -= value; }
 105                 }
 106                 #endregion Events
 107
 108                 #region Constructor
 109                 public ToolBar ()
 110                 {
 111                         background_color = ThemeEngine.Current.DefaultControlBackColor;
 112                         foreground_color = ThemeEngine.Current.DefaultControlForeColor;
 113                         buttons = new ToolBarButtonCollection (this);
 114                         dock_style = DockStyle.Top;
 115
 116                         GotFocus += new EventHandler (FocusChanged);
 117                         LostFocus += new EventHandler (FocusChanged);
 118                         MouseDown += new MouseEventHandler (ToolBar_MouseDown);
 119                         MouseLeave += new EventHandler (ToolBar_MouseLeave);
 120                         MouseMove += new MouseEventHandler (ToolBar_MouseMove);
 121                         MouseUp += new MouseEventHandler (ToolBar_MouseUp);
 122
 123                         SetStyle (ControlStyles.UserPaint, false);
 124                         SetStyle (ControlStyles.FixedHeight, true);
 125                 }
 126                 #endregion Constructor
 127
 128                 #region protected Properties
 129                 protected override CreateParams CreateParams
 130                 {
 131                         get { return base.CreateParams; }
 132                 }
 133
 134                 protected override ImeMode DefaultImeMode {
 135                         get { return ImeMode.Disable; }
 136                 }
 137
 138                 protected override Size DefaultSize {
 139                         get { return ThemeEngine.Current.ToolBarDefaultSize; }
 140                 }
 141                 #endregion
 142
 143                 ToolBarAppearance appearance = ToolBarAppearance.Normal;
 144
 145                 #region Public Properties
 146                 [DefaultValue (ToolBarAppearance.Normal)]
 147                 [Localizable (true)]
 148                 public ToolBarAppearance Appearance {
 149                         get { return appearance; }
 150                         set {
 151                                 if (value == appearance)
 152                                         return;
 153
 154                                 appearance = value;
 155                                 Redraw (true);
 156                         }
 157                 }
 158
 159                 bool autosize = true;
 160
 161                 [DefaultValue (true)]
 162                 [Localizable (true)]
 163                 public bool AutoSize {
 164                         get { return autosize; }
 165                         set {
 166                                 if (value == autosize)
 167                                         return;
 168
 169                                 autosize = value;
 170                                 Redraw (true);
 171                         }
 172                 }
 173
 174                 [Browsable (false)]
 175                 [EditorBrowsable (EditorBrowsableState.Never)]
 176                 public override Color BackColor {
 177                         get { return background_color; }
 178                         set {
 179                                 if (value == background_color)
 180                                         return;
 181
 182                                 background_color = value;
 183                                 OnBackColorChanged (EventArgs.Empty);
 184                                 Redraw (false);
 185                         }
 186                 }
 187
 188                 [Browsable (false)]
 189                 [EditorBrowsable (EditorBrowsableState.Never)]
 190                 public override Image BackgroundImage {
 191                         get { return background_image; }
 192                         set {
 193                                 if (value == background_image)
 194                                         return;
 195
 196                                 background_image = value;
 197                                 OnBackgroundImageChanged (EventArgs.Empty);
 198                                 Redraw (false);
 199                         }
 200                 }
 201
 202                 [DefaultValue (BorderStyle.None)]
 203                 [DispIdAttribute (-504)]
 204                 public BorderStyle BorderStyle {
 205                         get { return InternalBorderStyle; }
 206                         set { InternalBorderStyle = value; }
 207                 }
 208
 209                 ToolBarButtonCollection buttons;
 210
 211                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 212                 [Localizable (true)]
 213                 [MergableProperty (false)]
 214                 public ToolBarButtonCollection Buttons {
 215                         get { return buttons; }
 216                 }
 217
 218                 Size button_size;
 219
 220                 [Localizable (true)]
 221                 [RefreshProperties (RefreshProperties.All)]
 222                 public Size ButtonSize {
 223                         get {
 224                                 if (button_size.IsEmpty) {
 225                                         if (buttons.Count == 0)
 226                                                 return new Size (24, 22);
 227                                         Size result = CalcButtonSize ();
 228                                         if (result.IsEmpty)
 229                                                 return new Size (24, 22);
 230                                         else
 231                                                 return result;
 232                                 }
 233                                 return button_size;
 234                         }
 235                         set {
 236                                 size_specified = value != Size.Empty;
 237                                 if (button_size == value)
 238                                         return;
 239
 240                                 button_size = value;
 241                                 Redraw (true);
 242                         }
 243                 }
 244
 245                 bool divider = true;
 246
 247                 [DefaultValue (true)]
 248                 public bool Divider {
 249                         get { return divider; }
 250                         set {
 251                                 if (value == divider)
 252                                         return;
 253
 254                                 divider = value;
 255                                 Redraw (false);
 256                         }
 257                 }
 258
 259                 [DefaultValue (DockStyle.Top)]
 260                 [Localizable (true)]
 261                 public override DockStyle Dock {
 262                         get { return base.Dock; }
 263                         set { base.Dock = value; }
 264                 }
 265
 266                 bool drop_down_arrows = false;
 267
 268                 [DefaultValue (false)]
 269                 [Localizable (true)]
 270                 public bool DropDownArrows {
 271                         get { return drop_down_arrows; }
 272                         set {
 273                                 if (value == drop_down_arrows)
 274                                         return;
 275
 276                                 drop_down_arrows = value;
 277                                 Redraw (true);
 278                         }
 279                 }
 280
 281                 [Browsable (false)]
 282                 [EditorBrowsable (EditorBrowsableState.Never)]
 283                 public override Color ForeColor {
 284                         get { return foreground_color; }
 285                         set {
 286                                 if (value == foreground_color)
 287                                         return;
 288
 289                                 foreground_color = value;
 290                                 OnForeColorChanged (EventArgs.Empty);
 291                                 Redraw (false);
 292                         }
 293                 }
 294
 295                 ImageList image_list;
 296
 297                 [DefaultValue (null)]
 298                 public ImageList ImageList {
 299                         get { return image_list; }
 300                         set {
 301                                 if (image_list == value)
 302                                         return;
 303                                 image_list = value;
 304                                 Redraw (true);
 305                         }
 306                 }
 307
 308                 [Browsable (false)]
 309                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 310                 [EditorBrowsable (EditorBrowsableState.Advanced)]
 311                 public Size ImageSize {
 312                         get {
 313                                 if (ImageList == null)
 314                                         return Size.Empty;
 315
 316                                 return ImageList.ImageSize;
 317                         }
 318                 }
 319
 320                 ImeMode ime_mode;
 321
 322                 [Browsable (false)]
 323                 [EditorBrowsable (EditorBrowsableState.Never)]
 324                 public new ImeMode ImeMode {
 325                         get { return ime_mode; }
 326                         set {
 327                                 if (value == ime_mode)
 328                                         return;
 329
 330                                 ime_mode = value;
 331                                 OnImeModeChanged (EventArgs.Empty);
 332                         }
 333                 }
 334
 335                 [Browsable (false)]
 336                 [EditorBrowsable (EditorBrowsableState.Never)]
 337                 public override RightToLeft RightToLeft {
 338                         get { return base.RightToLeft; }
 339                         set {
 340                                 if (value == base.RightToLeft)
 341                                         return;
 342
 343                                 base.RightToLeft = value;
 344                                 OnRightToLeftChanged (EventArgs.Empty);
 345                         }
 346                 }
 347
 348                 bool show_tooltips = false;
 349
 350                 [DefaultValue (false)]
 351                 [Localizable (true)]
 352                 public bool ShowToolTips {
 353                         get { return show_tooltips; }
 354                         set { show_tooltips = value; }
 355                 }
 356
 357                 [DefaultValue (false)]
 358                 public new bool TabStop {
 359                         get { return base.TabStop; }
 360                         set { base.TabStop = value; }
 361                 }
 362
 363                 [Bindable (false)]
 364                 [Browsable (false)]
 365                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 366                 [EditorBrowsable (EditorBrowsableState.Never)]
 367                 public override string Text {
 368                         get { return text; }
 369                         set {
 370                                 if (value == text)
 371                                         return;
 372
 373                                 text = value;
 374                                 Redraw (true);
 375                                 OnTextChanged (EventArgs.Empty);
 376                         }
 377                 }
 378
 379                 ToolBarTextAlign text_alignment = ToolBarTextAlign.Underneath;
 380
 381                 [DefaultValue (ToolBarTextAlign.Underneath)]
 382                 [Localizable (true)]
 383                 public ToolBarTextAlign TextAlign {
 384                         get { return text_alignment; }
 385                         set {
 386                                 if (value == text_alignment)
 387                                         return;
 388
 389                                 text_alignment = value;
 390                                 Redraw (true);
 391                         }
 392                 }
 393
 394                 bool wrappable = true;
 395
 396                 [DefaultValue (true)]
 397                 [Localizable (true)]
 398                 public bool Wrappable {
 399                         get { return wrappable; }
 400                         set {
 401                                 if (value == wrappable)
 402                                         return;
 403
 404                                 wrappable = value;
 405                                 Redraw (true);
 406                         }
 407                 }
 408                 #endregion Public Properties
 409
 410                 #region Public Methods
 411                 public override string ToString ()
 412                 {
 413                         int count = this.Buttons.Count;
 414
 415                         if (count == 0)
 416                                 return string.Format ("System.Windows.Forms.ToolBar, Button.Count: 0");
 417                         else
 418                                 return string.Format ("System.Windows.Forms.ToolBar, Button.Count: {0}, Buttons[0]: {1}",
 419                                                       count, this.Buttons [0].ToString ());
 420                 }
 421                 #endregion Public Methods
 422
 423                 #region Protected Methods
 424                 protected override void CreateHandle ()
 425                 {
 426                         base.CreateHandle ();
 427                 }
 428
 429                 protected override void Dispose (bool disposing)
 430                 {
 431                         if (disposing)
 432                                 ImageList = null;
 433
 434                         base.Dispose (disposing);
 435                 }
 436
 437                 protected virtual void OnButtonClick (ToolBarButtonClickEventArgs e)
 438                 {
 439                         if (e.Button.Style == ToolBarButtonStyle.ToggleButton) {
 440                                 if (! e.Button.Pushed)
 441                                         e.Button.Pushed = true;
 442                                 else
 443                                         e.Button.Pushed = false;
 444                         }
 445                         e.Button.pressed = false;
 446
 447                         Invalidate (e.Button.Rectangle);
 448                         Redraw (false);
 449
 450                         if (ButtonClick != null)
 451                                 ButtonClick (this, e);
 452                 }
 453
 454                 protected virtual void OnButtonDropDown (ToolBarButtonClickEventArgs e)
 455                 {
 456                         if (ButtonDropDown != null)
 457                                 ButtonDropDown (this, e);
 458
 459                         if (e.Button.DropDownMenu == null)
 460                                 return;
 461
 462                         Point loc = new Point (e.Button.Rectangle.X + 1, e.Button.Rectangle.Bottom + 1);
 463                         ((ContextMenu) e.Button.DropDownMenu).Show (this, loc);
 464
 465                         e.Button.dd_pressed = false;
 466                         Invalidate (e.Button.Rectangle);
 467                 }
 468
 469                 protected override void OnFontChanged (EventArgs e)
 470                 {
 471                         base.OnFontChanged (e);
 472                         Redraw (true);
 473                 }
 474
 475                 protected override void OnHandleCreated (EventArgs e)
 476                 {
 477                         base.OnHandleCreated (e);
 478                 }
 479
 480                 protected override void OnResize (EventArgs e)
 481                 {
 482                         base.OnResize (e);
 483
 484                         if (Width <= 0 || Height <= 0 || !Visible)
 485                                 return;
 486
 487                         Redraw (true);
 488                 }
 489
 490                 bool height_specified = false;
 491                 int requested_height = -1;
 492
 493                 protected override void SetBoundsCore (int x, int y, int width, int height, BoundsSpecified specified)
 494                 {
 495                         if ((specified & BoundsSpecified.Height) != 0) {
 496                                 requested_height = height;
 497                                 height_specified = true;
 498                         }
 499                         base.SetBoundsCore (x, y, width, height, specified);
 500                 }
 501
 502                 protected override void WndProc (ref Message m)
 503                 {
 504                         base.WndProc (ref m);
 505                 }
 506
 507                 internal override bool InternalPreProcessMessage (ref Message msg)
 508                 {
 509                         if (msg.Msg == (int)Msg.WM_KEYDOWN) {
 510                                 Keys key_data = (Keys)msg.WParam.ToInt32();
 511                                 if (HandleKeyDown (key_data))
 512                                         return true;
 513                         }
 514                         return base.InternalPreProcessMessage (ref msg);
 515                 }
 516
 517                 #endregion Protected Methods
 518
 519                 #region Private Methods
 520                 private void FocusChanged (object sender, EventArgs args)
 521                 {
 522                         if (Appearance != ToolBarAppearance.Flat || Buttons.Count == 0)
 523                                 return;
 524
 525                         ToolBarButton prelit = null;
 526                         foreach (ToolBarButton b in Buttons)
 527                                 if (b.Hilight) {
 528                                         prelit = b;
 529                                         break;
 530                                 }
 531
 532                         if (Focused && prelit == null)
 533                                 foreach (ToolBarButton btn in Buttons) {
 534                                         if (btn.Enabled) {
 535                                                 btn.Hilight = true;
 536                                                 break;
 537                                         }
 538                                 }
 539                         else if (prelit != null)
 540                                 prelit.Hilight = false;
 541                 }
 542
 543                 private bool HandleKeyDown (Keys key_data)
 544                 {
 545                         if (Appearance != ToolBarAppearance.Flat || Buttons.Count == 0)
 546                                 return false;
 547
 548                         switch (key_data) {
 549                         case Keys.Left:
 550                         case Keys.Up:
 551                                 HighlightButton (-1);
 552                                 return true;
 553                         case Keys.Right:
 554                         case Keys.Down:
 555                                 HighlightButton (1);
 556                                 return true;
 557                         default:
 558                                 return false;
 559                         }
 560                 }
 561
 562                 void HighlightButton (int offset)
 563                 {
 564                         ArrayList enabled = new ArrayList ();
 565                         int count = 0;
 566                         int start = -1;
 567                         ToolBarButton curr_button = null;
 568                         foreach (ToolBarButton btn in Buttons) {
 569                                 if (btn.Hilight) {
 570                                         start = count;
 571                                         curr_button = btn;
 572                                 }
 573
 574                                 if (btn.Enabled) {
 575                                         enabled.Add (btn);
 576                                         count++;
 577                                 }
 578                         }
 579
 580                         int next = (start + offset) % count;
 581                         if (next < 0)
 582                                 next = count - 1;
 583
 584                         if (next == start)
 585                                 return;
 586
 587                         if (curr_button != null)
 588                                 curr_button.Hilight = false;
 589                         (enabled [next] as ToolBarButton).Hilight = true;
 590                 }
 591
 592                 private void ToolBar_MouseDown (object sender, MouseEventArgs me)
 593                 {
 594                         if (!Enabled)
 595                                 return;
 596
 597                         Point loc = new Point (me.X, me.Y);
 598
 599                         // draw the pushed button
 600                         foreach (ToolBarButton button in buttons) {
 601                                 if (button.Enabled && button.Rectangle.Contains (loc)) {
 602                                         // Mark the DropDown rect as pressed.
 603                                         // We don't redraw the dropdown rect.
 604                                         if (button.Style == ToolBarButtonStyle.DropDownButton) {
 605                                                 Rectangle rect = button.Rectangle;
 606                                                 rect.Width = ThemeEngine.Current.ToolBarDropDownWidth;
 607                                                 rect.X = button.Rectangle.Right - rect.Width;
 608                                                 if (rect.Contains (loc)) {
 609                                                         if (button.DropDownMenu != null) {
 610                                                                 button.dd_pressed = true;
 611                                                                 Invalidate (rect);
 612                                                         }
 613                                                         break;
 614                                                 }
 615                                         }
 616                                         button.pressed = true;
 617                                         button.inside = true;
 618                                         Invalidate (button.Rectangle);
 619                                         break;
 620                                 }
 621                         }
 622                 }
 623
 624                 private void ToolBar_MouseUp (object sender, MouseEventArgs me)
 625                 {
 626                         if (!Enabled)
 627                                 return;
 628
 629                         Point loc = new Point (me.X, me.Y);
 630
 631                         // draw the normal button
 632                         // Make a copy in case the list is modified during enumeration
 633                         ArrayList buttons = new ArrayList (this.buttons);
 634                         foreach (ToolBarButton button in buttons) {
 635                                 if (button.Enabled && button.Rectangle.Contains (loc)) {
 636                                         if (button.Style == ToolBarButtonStyle.DropDownButton) {
 637                                                 Rectangle ddRect = button.Rectangle;
 638                                                 ddRect.Width = ThemeEngine.Current.ToolBarDropDownWidth;
 639                                                 ddRect.X = button.Rectangle.Right - ddRect.Width;
 640                                                 if (ddRect.Contains (loc)) {
 641                                                         if (button.dd_pressed)
 642                                                                 OnButtonDropDown (new ToolBarButtonClickEventArgs (button));
 643                                                         continue;
 644                                                 }
 645                                         }
 646                                         // Fire a ButtonClick
 647                                         if (button.pressed)
 648                                                 OnButtonClick (new ToolBarButtonClickEventArgs (button));
 649                                 } else if (button.pressed) {
 650                                         button.pressed = false;
 651                                         Invalidate (button.Rectangle);
 652                                 }
 653                         }
 654                 }
 655
 656                 private void ToolBar_MouseLeave (object sender, EventArgs e)
 657                 {
 658                         if (!Enabled || appearance != ToolBarAppearance.Flat || current_button == null)
 659                                 return;
 660
 661                         if (current_button.Hilight) {
 662                                 current_button.Hilight = false;
 663                                 Invalidate (current_button.Rectangle);
 664                                 Redraw (false);
 665                         }
 666                         current_button = null;
 667                 }
 668
 669                 private void ToolBar_MouseMove (object sender, MouseEventArgs me)
 670                 {
 671                         if (!Enabled)
 672                                 return;
 673
 674                         Point loc = new Point (me.X, me.Y);
 675
 676                         if (this.Capture) {
 677                                 // If the button was pressed and we leave, release the
 678                                 // button press and vice versa
 679                                 foreach (ToolBarButton button in buttons) {
 680                                         if (button.pressed &&
 681                                             (button.inside != button.Rectangle.Contains (loc))) {
 682                                                 button.inside = button.Rectangle.Contains (loc);
 683                                                 button.Hilight = false;
 684                                                 Invalidate (button.Rectangle);
 685                                                 Redraw (false);
 686                                                 break;
 687                                         }
 688                                 }
 689                         }
 690                         // following is only for flat style toolbar
 691                         else if (appearance == ToolBarAppearance.Flat) {
 692                                 if (current_button != null && current_button.Rectangle.Contains (loc)) {
 693                                         if (current_button.Hilight || current_button.Pushed)
 694                                                 return;
 695                                         current_button.Hilight = true;
 696                                         Invalidate (current_button.Rectangle);
 697                                         Redraw (false);
 698                                 }
 699                                 else {
 700                                         foreach (ToolBarButton button in buttons) {
 701                                                 if (button.Rectangle.Contains (loc) && button.Enabled) {
 702                                                         current_button = button;
 703                                                         if (current_button.Hilight || current_button.Pushed)
 704                                                                 continue;
 705                                                         current_button.Hilight = true;
 706                                                         Invalidate (current_button.Rectangle);
 707                                                         Redraw (false);
 708                                                 }
 709                                                 else if (button.Hilight) {
 710                                                         button.Hilight = false;
 711                                                         Invalidate (button.Rectangle);
 712                                                         Redraw (false);
 713                                                 }
 714                                         }
 715                                 }
 716                         }
 717                 }
 718
 719                 internal override void OnPaintInternal (PaintEventArgs pevent)
 720                 {
 721                         ThemeEngine.Current.DrawToolBar (pevent.Graphics, pevent.ClipRectangle, this);
 722                 }
 723
 724                 internal void Redraw (bool recalculate)
 725                 {
 726                         if (recalculate)
 727                                 Layout ();
 728
 729                         Refresh ();
 730                 }
 731
 732                 internal bool SizeSpecified {
 733                         get { return size_specified; }
 734                 }
 735
 736                 const int text_padding = 3;
 737
 738                 private Size CalcButtonSize ()
 739                 {
 740                         if (Buttons.Count == 0)
 741                                 return Size.Empty;
 742
 743                         string longest_text = Buttons [0].Text;
 744                         for (int i = 1; i < Buttons.Count; i++) {
 745                                 if (Buttons[i].Text.Length > longest_text.Length)
 746                                         longest_text = Buttons[i].Text;
 747                         }
 748
 749                         Size size = Size.Empty;
 750                         if (longest_text != null && longest_text.Length > 0) {
 751                                 SizeF sz = DeviceContext.MeasureString (longest_text, Font);
 752                                 if (sz != SizeF.Empty)
 753                                         size = new Size ((int) Math.Ceiling (sz.Width) + 2 * text_padding, (int) Math.Ceiling (sz.Height));
 754                         }
 755
 756                         Size img_size = ImageList == null ? new Size (16, 16) : ImageSize;
 757
 758                         Theme theme = ThemeEngine.Current;
 759                         int imgWidth = img_size.Width + 2 * theme.ToolBarImageGripWidth;
 760                         int imgHeight = img_size.Height + 2 * theme.ToolBarImageGripWidth;
 761
 762                         if (text_alignment == ToolBarTextAlign.Right) {
 763                                 size.Width = imgWidth + size.Width;
 764                                 size.Height = (size.Height > imgHeight) ? size.Height : imgHeight;
 765                         } else {
 766                                 size.Height = imgHeight + size.Height;
 767                                 size.Width = (size.Width > imgWidth) ? size.Width : imgWidth;
 768                         }
 769
 770                         size.Width += theme.ToolBarImageGripWidth;
 771                         size.Height += theme.ToolBarImageGripWidth;
 772                         return size;
 773                 }
 774
 775                 // Flat toolbars disregard specified sizes.  Normal toolbars grow the
 776                 // button size to be at least large enough to show the image.
 777                 Size AdjustedButtonSize {
 778                         get {
 779                                 Size size = ButtonSize;
 780                                 if (size_specified) {
 781                                         if (Appearance == ToolBarAppearance.Flat)
 782                                                 size = CalcButtonSize ();
 783                                         else {
 784                                                 int grip = ThemeEngine.Current.ToolBarImageGripWidth;
 785                                                 if (size.Width < ImageSize.Width + 2 * grip )
 786                                                         size.Width = ImageSize.Width + 2 * grip;
 787                                                 if (size.Height < ImageSize.Height + 2 * grip)
 788                                                         size.Height = ImageSize.Height + 2 * grip;
 789                                         }
 790                                 }
 791                                 return size;
 792                         }
 793                 }
 794
 795                 void Layout ()
 796                 {
 797                         Theme theme = ThemeEngine.Current;
 798                         int x = theme.ToolBarGripWidth;
 799                         int y = theme.ToolBarGripWidth;
 800
 801                         Size button_size = AdjustedButtonSize;
 802
 803                         int ht = button_size.Height + theme.ToolBarGripWidth;
 804
 805                         if (Wrappable && Parent != null) {
 806                                 int separator_index = -1;
 807
 808                                 for (int i = 0; i < buttons.Count; i++) {
 809                                         ToolBarButton button = buttons [i];
 810
 811                                         if (!button.Visible)
 812                                                 continue;
 813
 814                                         if (size_specified)
 815                                                 button.Layout (button_size);
 816                                         else
 817                                                 button.Layout ();
 818
 819                                         bool is_separator = button.Style == ToolBarButtonStyle.Separator;
 820
 821                                         if (x + button.Rectangle.Width < Width || is_separator) {
 822                                                 button.Location = new Point (x, y);
 823                                                 x += button.Rectangle.Width;
 824                                                 if (is_separator)
 825                                                         separator_index = i;
 826                                         } else if (separator_index > 0) {
 827                                                 i = separator_index;
 828                                                 separator_index = -1;
 829                                                 x = theme.ToolBarGripWidth;
 830                                                 y += ht;
 831                                         } else {
 832                                                 x = theme.ToolBarGripWidth;
 833                                                 y += ht;
 834                                                 button.Location = new Point (x, y);
 835                                                 x += button.Rectangle.Width;
 836                                         }
 837                                 }
 838                                 if (AutoSize)
 839                                         Height = y + ht;
 840                         } else {
 841                                 if (AutoSize)
 842                                         Height = ht;
 843                                 else if (!height_specified)
 844                                         Height = DefaultSize.Height;
 845                                 foreach (ToolBarButton button in buttons) {
 846                                         if (size_specified)
 847                                                 button.Layout (button_size);
 848                                         else
 849                                                 button.Layout ();
 850                                         button.Location = new Point (x, y);
 851                                         x += button.Rectangle.Width;
 852                                 }
 853                         }
 854                 }
 855                 #endregion Private Methods
 856
 857                 #region subclass
 858                 public class ToolBarButtonCollection : IList, ICollection, IEnumerable
 859                 {
 860                         #region instance variables
 861                         private ArrayList list;
 862                         private ToolBar owner;
 863                         #endregion
 864
 865                         #region constructors
 866                         public ToolBarButtonCollection (ToolBar owner)
 867                         {
 868                                 this.owner = owner;
 869                                 list = new ArrayList ();
 870                         }
 871                         #endregion
 872
 873                         #region properties
 874                         [Browsable (false)]
 875                         public int Count {
 876                                 get { return list.Count; }
 877                         }
 878
 879                         public bool IsReadOnly {
 880                                 get { return list.IsReadOnly; }
 881                         }
 882
 883                         public virtual ToolBarButton this [int index] {
 884                                 get { return (ToolBarButton) list [index]; }
 885                                 set {
 886                                         value.SetParent (owner);
 887                                         list [index] = value;
 888                                         owner.Redraw (true);
 889                                 }
 890                         }
 891
 892                         bool ICollection.IsSynchronized {
 893                                 get { return list.IsSynchronized; }
 894                         }
 895
 896                         object ICollection.SyncRoot {
 897                                 get { return list.SyncRoot; }
 898                         }
 899
 900                         bool IList.IsFixedSize {
 901                                 get { return list.IsFixedSize; }
 902                         }
 903
 904                         object IList.this [int index] {
 905                                 get { return this [index]; }
 906                                 set {
 907                                         if (! (value is ToolBarButton))
 908                                                 throw new ArgumentException("Not of type ToolBarButton", "value");
 909                                         this [index] = (ToolBarButton) value;
 910                                 }
 911                         }
 912                         #endregion
 913
 914                         #region methods
 915                         public int Add (string text)
 916                         {
 917                                 ToolBarButton button = new ToolBarButton (text);
 918                                 return this.Add (button);
 919                         }
 920
 921                         public int Add (ToolBarButton button)
 922                         {
 923                                 int result;
 924                                 button.SetParent (owner);
 925                                 result = list.Add (button);
 926                                 owner.Redraw (true);
 927                                 return result;
 928                         }
 929
 930                         public void AddRange (ToolBarButton [] buttons)
 931                         {
 932                                 foreach (ToolBarButton button in buttons)
 933                                         Add (button);
 934                         }
 935
 936                         public void Clear ()
 937                         {
 938                                 list.Clear ();
 939                                 owner.Redraw (false);
 940                         }
 941
 942                         public bool Contains (ToolBarButton button)
 943                         {
 944                                 return list.Contains (button);
 945                         }
 946
 947                         public IEnumerator GetEnumerator ()
 948                         {
 949                                 return list.GetEnumerator ();
 950                         }
 951
 952                         void ICollection.CopyTo (Array dest, int index)
 953                         {
 954                                 list.CopyTo (dest, index);
 955                         }
 956
 957                         int IList.Add (object button)
 958                         {
 959                                 if (! (button is ToolBarButton)) {
 960                                         throw new ArgumentException("Not of type ToolBarButton", "button");
 961                                 }
 962
 963                                 return this.Add ((ToolBarButton) button);
 964                         }
 965
 966                         bool IList.Contains (object button)
 967                         {
 968                                 if (! (button is ToolBarButton)) {
 969                                         throw new ArgumentException("Not of type ToolBarButton", "button");
 970                                 }
 971
 972                                 return this.Contains ((ToolBarButton) button);
 973                         }
 974
 975                         int IList.IndexOf (object button)
 976                         {
 977                                 if (! (button is ToolBarButton)) {
 978                                         throw new ArgumentException("Not of type ToolBarButton", "button");
 979                                 }
 980
 981                                 return this.IndexOf ((ToolBarButton) button);
 982                         }
 983
 984                         void IList.Insert (int index, object button)
 985                         {
 986                                 if (! (button is ToolBarButton)) {
 987                                         throw new ArgumentException("Not of type ToolBarButton", "button");
 988                                 }
 989
 990                                 this.Insert (index, (ToolBarButton) button);
 991                         }
 992
 993                         void IList.Remove (object button)
 994                         {
 995                                 if (! (button is ToolBarButton)) {
 996                                         throw new ArgumentException("Not of type ToolBarButton", "button");
 997                                 }
 998
 999                                 this.Remove ((ToolBarButton) button);
1000                         }
1001
1002                         public int IndexOf (ToolBarButton button)
1003                         {
1004                                 return list.IndexOf (button);
1005                         }
1006
1007                         public void Insert (int index, ToolBarButton button)
1008                         {
1009                                 list.Insert (index, button);
1010                                 owner.Redraw (true);
1011                         }
1012
1013                         public void Remove (ToolBarButton button)
1014                         {
1015                                 list.Remove (button);
1016                                 owner.Redraw (true);
1017                         }
1018
1019                         public void RemoveAt (int index)
1020                         {
1021                                 list.RemoveAt (index);
1022                                 owner.Redraw (true);
1023                         }
1024                         #endregion methods
1025                 }
1026                 #endregion subclass
1027         }
1028 }