src/common/tbarbase.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/tbarbase.cpp
   3 // Purpose:     wxToolBarBase implementation
   4 // Author:      Julian Smart
   5 // Modified by: VZ at 11.12.99 (wxScrollableToolBar split off)
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_TOOLBAR
  28
  29 #include "wx/toolbar.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/control.h"
  33     #include "wx/frame.h"
  34 #endif
  35
  36 #if wxUSE_IMAGE
  37     #include "wx/image.h"
  38     #include "wx/settings.h"
  39 #endif // wxUSE_IMAGE
  40
  41 // ----------------------------------------------------------------------------
  42 // wxWidgets macros
  43 // ----------------------------------------------------------------------------
  44
  45 BEGIN_EVENT_TABLE(wxToolBarBase, wxControl)
  46 END_EVENT_TABLE()
  47
  48 #include "wx/listimpl.cpp"
  49
  50 WX_DEFINE_LIST(wxToolBarToolsList)
  51
  52 // ============================================================================
  53 // implementation
  54 // ============================================================================
  55
  56 // ----------------------------------------------------------------------------
  57 // wxToolBarToolBase
  58 // ----------------------------------------------------------------------------
  59
  60 IMPLEMENT_DYNAMIC_CLASS(wxToolBarToolBase, wxObject)
  61
  62 bool wxToolBarToolBase::Enable(bool enable)
  63 {
  64     if ( m_enabled == enable )
  65         return false;
  66
  67     m_enabled = enable;
  68
  69     return true;
  70 }
  71
  72 bool wxToolBarToolBase::Toggle(bool toggle)
  73 {
  74     wxASSERT_MSG( CanBeToggled(), _T("can't toggle this tool") );
  75
  76     if ( m_toggled == toggle )
  77         return false;
  78
  79     m_toggled = toggle;
  80
  81     return true;
  82 }
  83
  84 bool wxToolBarToolBase::SetToggle(bool toggle)
  85 {
  86     wxItemKind kind = toggle ? wxITEM_CHECK : wxITEM_NORMAL;
  87     if ( m_kind == kind )
  88         return false;
  89
  90     m_kind = kind;
  91
  92     return true;
  93 }
  94
  95 bool wxToolBarToolBase::SetShortHelp(const wxString& help)
  96 {
  97     if ( m_shortHelpString == help )
  98         return false;
  99
 100     m_shortHelpString = help;
 101
 102     return true;
 103 }
 104
 105 bool wxToolBarToolBase::SetLongHelp(const wxString& help)
 106 {
 107     if ( m_longHelpString == help )
 108         return false;
 109
 110     m_longHelpString = help;
 111
 112     return true;
 113 }
 114
 115 // ----------------------------------------------------------------------------
 116 // wxToolBarBase adding/deleting items
 117 // ----------------------------------------------------------------------------
 118
 119 wxToolBarBase::wxToolBarBase()
 120 {
 121     // the list owns the pointers
 122     m_xMargin = m_yMargin = 0;
 123     m_maxRows = m_maxCols = 0;
 124     m_toolPacking = m_toolSeparation = 0;
 125     m_defaultWidth = 16;
 126     m_defaultHeight = 15;
 127 }
 128
 129 wxToolBarToolBase *wxToolBarBase::DoAddTool(int id,
 130                                             const wxString& label,
 131                                             const wxBitmap& bitmap,
 132                                             const wxBitmap& bmpDisabled,
 133                                             wxItemKind kind,
 134                                             const wxString& shortHelp,
 135                                             const wxString& longHelp,
 136                                             wxObject *clientData,
 137                                             wxCoord WXUNUSED(xPos),
 138                                             wxCoord WXUNUSED(yPos))
 139 {
 140     InvalidateBestSize();
 141     return InsertTool(GetToolsCount(), id, label, bitmap, bmpDisabled,
 142                       kind, shortHelp, longHelp, clientData);
 143 }
 144
 145 wxToolBarToolBase *wxToolBarBase::InsertTool(size_t pos,
 146                                              int id,
 147                                              const wxString& label,
 148                                              const wxBitmap& bitmap,
 149                                              const wxBitmap& bmpDisabled,
 150                                              wxItemKind kind,
 151                                              const wxString& shortHelp,
 152                                              const wxString& longHelp,
 153                                              wxObject *clientData)
 154 {
 155     wxCHECK_MSG( pos <= GetToolsCount(), (wxToolBarToolBase *)NULL,
 156                  _T("invalid position in wxToolBar::InsertTool()") );
 157
 158     wxToolBarToolBase *tool = CreateTool(id, label, bitmap, bmpDisabled, kind,
 159                                          clientData, shortHelp, longHelp);
 160
 161     if ( !InsertTool(pos, tool) )
 162     {
 163         delete tool;
 164
 165         return NULL;
 166     }
 167
 168     return tool;
 169 }
 170
 171 wxToolBarToolBase *wxToolBarBase::AddTool(wxToolBarToolBase *tool)
 172 {
 173     return InsertTool(GetToolsCount(), tool);
 174 }
 175
 176 wxToolBarToolBase *
 177 wxToolBarBase::InsertTool(size_t pos, wxToolBarToolBase *tool)
 178 {
 179     wxCHECK_MSG( pos <= GetToolsCount(), (wxToolBarToolBase *)NULL,
 180                  _T("invalid position in wxToolBar::InsertTool()") );
 181
 182     if ( !tool || !DoInsertTool(pos, tool) )
 183     {
 184         return NULL;
 185     }
 186
 187     m_tools.Insert(pos, tool);
 188
 189     return tool;
 190 }
 191
 192 wxToolBarToolBase *wxToolBarBase::AddControl(wxControl *control)
 193 {
 194     return InsertControl(GetToolsCount(), control);
 195 }
 196
 197 wxToolBarToolBase *wxToolBarBase::InsertControl(size_t pos, wxControl *control)
 198 {
 199     wxCHECK_MSG( control, (wxToolBarToolBase *)NULL,
 200                  _T("toolbar: can't insert NULL control") );
 201
 202     wxCHECK_MSG( control->GetParent() == this, (wxToolBarToolBase *)NULL,
 203                  _T("control must have toolbar as parent") );
 204
 205     wxCHECK_MSG( pos <= GetToolsCount(), (wxToolBarToolBase *)NULL,
 206                  _T("invalid position in wxToolBar::InsertControl()") );
 207
 208     wxToolBarToolBase *tool = CreateTool(control);
 209
 210     if ( !InsertTool(pos, tool) )
 211     {
 212         delete tool;
 213
 214         return NULL;
 215     }
 216
 217     return tool;
 218 }
 219
 220 wxControl *wxToolBarBase::FindControl( int id )
 221 {
 222     for ( wxToolBarToolsList::compatibility_iterator node = m_tools.GetFirst();
 223           node;
 224           node = node->GetNext() )
 225     {
 226         const wxToolBarToolBase * const tool = node->GetData();
 227         if ( tool->IsControl() )
 228         {
 229             wxControl * const control = tool->GetControl();
 230
 231             if ( !control )
 232             {
 233                 wxFAIL_MSG( _T("NULL control in toolbar?") );
 234             }
 235             else if ( control->GetId() == id )
 236             {
 237                 // found
 238                 return control;
 239             }
 240         }
 241     }
 242
 243    return NULL;
 244 }
 245
 246 wxToolBarToolBase *wxToolBarBase::AddSeparator()
 247 {
 248     return InsertSeparator(GetToolsCount());
 249 }
 250
 251 wxToolBarToolBase *wxToolBarBase::InsertSeparator(size_t pos)
 252 {
 253     wxCHECK_MSG( pos <= GetToolsCount(), (wxToolBarToolBase *)NULL,
 254                  _T("invalid position in wxToolBar::InsertSeparator()") );
 255
 256     wxToolBarToolBase *tool = CreateTool(wxID_SEPARATOR,
 257                                          wxEmptyString,
 258                                          wxNullBitmap, wxNullBitmap,
 259                                          wxITEM_SEPARATOR, (wxObject *)NULL,
 260                                          wxEmptyString, wxEmptyString);
 261
 262     if ( !tool || !DoInsertTool(pos, tool) )
 263     {
 264         delete tool;
 265
 266         return NULL;
 267     }
 268
 269     m_tools.Insert(pos, tool);
 270
 271     return tool;
 272 }
 273
 274 wxToolBarToolBase *wxToolBarBase::RemoveTool(int id)
 275 {
 276     size_t pos = 0;
 277     wxToolBarToolsList::compatibility_iterator node;
 278     for ( node = m_tools.GetFirst(); node; node = node->GetNext() )
 279     {
 280         if ( node->GetData()->GetId() == id )
 281             break;
 282
 283         pos++;
 284     }
 285
 286     if ( !node )
 287     {
 288         // don't give any error messages - sometimes we might call RemoveTool()
 289         // without knowing whether the tool is or not in the toolbar
 290         return (wxToolBarToolBase *)NULL;
 291     }
 292
 293     wxToolBarToolBase *tool = node->GetData();
 294     if ( !DoDeleteTool(pos, tool) )
 295     {
 296         return (wxToolBarToolBase *)NULL;
 297     }
 298
 299     m_tools.Erase(node);
 300
 301     return tool;
 302 }
 303
 304 bool wxToolBarBase::DeleteToolByPos(size_t pos)
 305 {
 306     wxCHECK_MSG( pos < GetToolsCount(), false,
 307                  _T("invalid position in wxToolBar::DeleteToolByPos()") );
 308
 309     wxToolBarToolsList::compatibility_iterator node = m_tools.Item(pos);
 310
 311     if ( !DoDeleteTool(pos, node->GetData()) )
 312     {
 313         return false;
 314     }
 315
 316     delete node->GetData();
 317     m_tools.Erase(node);
 318
 319     return true;
 320 }
 321
 322 bool wxToolBarBase::DeleteTool(int id)
 323 {
 324     size_t pos = 0;
 325     wxToolBarToolsList::compatibility_iterator node;
 326     for ( node = m_tools.GetFirst(); node; node = node->GetNext() )
 327     {
 328         if ( node->GetData()->GetId() == id )
 329             break;
 330
 331         pos++;
 332     }
 333
 334     if ( !node || !DoDeleteTool(pos, node->GetData()) )
 335     {
 336         return false;
 337     }
 338
 339     delete node->GetData();
 340     m_tools.Erase(node);
 341
 342     return true;
 343 }
 344
 345 wxToolBarToolBase *wxToolBarBase::FindById(int id) const
 346 {
 347     wxToolBarToolBase *tool = (wxToolBarToolBase *)NULL;
 348
 349     for ( wxToolBarToolsList::compatibility_iterator node = m_tools.GetFirst();
 350           node;
 351           node = node->GetNext() )
 352     {
 353         tool = node->GetData();
 354         if ( tool->GetId() == id )
 355         {
 356             // found
 357             break;
 358         }
 359
 360         tool = NULL;
 361     }
 362
 363     return tool;
 364 }
 365
 366 void wxToolBarBase::UnToggleRadioGroup(wxToolBarToolBase *tool)
 367 {
 368     wxCHECK_RET( tool, _T("NULL tool in wxToolBarTool::UnToggleRadioGroup") );
 369
 370     if ( !tool->IsButton() || tool->GetKind() != wxITEM_RADIO )
 371         return;
 372
 373     wxToolBarToolsList::compatibility_iterator node = m_tools.Find(tool);
 374     wxCHECK_RET( node, _T("invalid tool in wxToolBarTool::UnToggleRadioGroup") );
 375
 376     wxToolBarToolsList::compatibility_iterator nodeNext = node->GetNext();
 377     while ( nodeNext )
 378     {
 379         wxToolBarToolBase *toolNext = nodeNext->GetData();
 380
 381         if ( !toolNext->IsButton() || toolNext->GetKind() != wxITEM_RADIO )
 382             break;
 383
 384         if ( toolNext->Toggle(false) )
 385         {
 386             DoToggleTool(toolNext, false);
 387         }
 388
 389         nodeNext = nodeNext->GetNext();
 390     }
 391
 392     wxToolBarToolsList::compatibility_iterator nodePrev = node->GetPrevious();
 393     while ( nodePrev )
 394     {
 395         wxToolBarToolBase *toolNext = nodePrev->GetData();
 396
 397         if ( !toolNext->IsButton() || toolNext->GetKind() != wxITEM_RADIO )
 398             break;
 399
 400         if ( toolNext->Toggle(false) )
 401         {
 402             DoToggleTool(toolNext, false);
 403         }
 404
 405         nodePrev = nodePrev->GetPrevious();
 406     }
 407 }
 408
 409 void wxToolBarBase::ClearTools()
 410 {
 411     while ( GetToolsCount() )
 412     {
 413         DeleteToolByPos(0);
 414     }
 415 }
 416
 417 bool wxToolBarBase::Realize()
 418 {
 419     return true;
 420 }
 421
 422 wxToolBarBase::~wxToolBarBase()
 423 {
 424     WX_CLEAR_LIST(wxToolBarToolsList, m_tools);
 425
 426     // notify the frame that it doesn't have a tool bar any longer to avoid
 427     // dangling pointers
 428     wxFrame *frame = wxDynamicCast(GetParent(), wxFrame);
 429     if ( frame && frame->GetToolBar() == this )
 430     {
 431         frame->SetToolBar(NULL);
 432     }
 433 }
 434
 435 // ----------------------------------------------------------------------------
 436 // wxToolBarBase tools state
 437 // ----------------------------------------------------------------------------
 438
 439 void wxToolBarBase::EnableTool(int id, bool enable)
 440 {
 441     wxToolBarToolBase *tool = FindById(id);
 442     if ( tool )
 443     {
 444         if ( tool->Enable(enable) )
 445         {
 446             DoEnableTool(tool, enable);
 447         }
 448     }
 449 }
 450
 451 void wxToolBarBase::ToggleTool(int id, bool toggle)
 452 {
 453     wxToolBarToolBase *tool = FindById(id);
 454     if ( tool && tool->CanBeToggled() )
 455     {
 456         if ( tool->Toggle(toggle) )
 457         {
 458             UnToggleRadioGroup(tool);
 459             DoToggleTool(tool, toggle);
 460         }
 461     }
 462 }
 463
 464 void wxToolBarBase::SetToggle(int id, bool toggle)
 465 {
 466     wxToolBarToolBase *tool = FindById(id);
 467     if ( tool )
 468     {
 469         if ( tool->SetToggle(toggle) )
 470         {
 471             DoSetToggle(tool, toggle);
 472         }
 473     }
 474 }
 475
 476 void wxToolBarBase::SetToolShortHelp(int id, const wxString& help)
 477 {
 478     wxToolBarToolBase *tool = FindById(id);
 479     if ( tool )
 480     {
 481         (void)tool->SetShortHelp(help);
 482     }
 483 }
 484
 485 void wxToolBarBase::SetToolLongHelp(int id, const wxString& help)
 486 {
 487     wxToolBarToolBase *tool = FindById(id);
 488     if ( tool )
 489     {
 490         (void)tool->SetLongHelp(help);
 491     }
 492 }
 493
 494 wxObject *wxToolBarBase::GetToolClientData(int id) const
 495 {
 496     wxToolBarToolBase *tool = FindById(id);
 497
 498     return tool ? tool->GetClientData() : (wxObject *)NULL;
 499 }
 500
 501 void wxToolBarBase::SetToolClientData(int id, wxObject *clientData)
 502 {
 503     wxToolBarToolBase *tool = FindById(id);
 504
 505     wxCHECK_RET( tool, _T("no such tool in wxToolBar::SetToolClientData") );
 506
 507     tool->SetClientData(clientData);
 508 }
 509
 510 int wxToolBarBase::GetToolPos(int id) const
 511 {
 512     size_t pos = 0;
 513     wxToolBarToolsList::compatibility_iterator node;
 514
 515     for ( node = m_tools.GetFirst(); node; node = node->GetNext() )
 516     {
 517         if ( node->GetData()->GetId() == id )
 518             return pos;
 519
 520         pos++;
 521     }
 522
 523     return wxNOT_FOUND;
 524 }
 525
 526 bool wxToolBarBase::GetToolState(int id) const
 527 {
 528     wxToolBarToolBase *tool = FindById(id);
 529     wxCHECK_MSG( tool, false, _T("no such tool") );
 530
 531     return tool->IsToggled();
 532 }
 533
 534 bool wxToolBarBase::GetToolEnabled(int id) const
 535 {
 536     wxToolBarToolBase *tool = FindById(id);
 537     wxCHECK_MSG( tool, false, _T("no such tool") );
 538
 539     return tool->IsEnabled();
 540 }
 541
 542 wxString wxToolBarBase::GetToolShortHelp(int id) const
 543 {
 544     wxToolBarToolBase *tool = FindById(id);
 545     wxCHECK_MSG( tool, wxEmptyString, _T("no such tool") );
 546
 547     return tool->GetShortHelp();
 548 }
 549
 550 wxString wxToolBarBase::GetToolLongHelp(int id) const
 551 {
 552     wxToolBarToolBase *tool = FindById(id);
 553     wxCHECK_MSG( tool, wxEmptyString, _T("no such tool") );
 554
 555     return tool->GetLongHelp();
 556 }
 557
 558 // ----------------------------------------------------------------------------
 559 // wxToolBarBase geometry
 560 // ----------------------------------------------------------------------------
 561
 562 void wxToolBarBase::SetMargins(int x, int y)
 563 {
 564     m_xMargin = x;
 565     m_yMargin = y;
 566 }
 567
 568 void wxToolBarBase::SetRows(int WXUNUSED(nRows))
 569 {
 570     // nothing
 571 }
 572
 573 // ----------------------------------------------------------------------------
 574 // event processing
 575 // ----------------------------------------------------------------------------
 576
 577 // Only allow toggle if returns true
 578 bool wxToolBarBase::OnLeftClick(int id, bool toggleDown)
 579 {
 580     wxCommandEvent event(wxEVT_COMMAND_TOOL_CLICKED, id);
 581     event.SetEventObject(this);
 582
 583     // we use SetInt() to make wxCommandEvent::IsChecked() return toggleDown
 584     event.SetInt((int)toggleDown);
 585
 586     // and SetExtraLong() for backwards compatibility
 587     event.SetExtraLong((long)toggleDown);
 588
 589     // Send events to this toolbar instead (and thence up the window hierarchy)
 590     GetEventHandler()->ProcessEvent(event);
 591
 592     return true;
 593 }
 594
 595 // Call when right button down.
 596 void wxToolBarBase::OnRightClick(int id,
 597                                  long WXUNUSED(x),
 598                                  long WXUNUSED(y))
 599 {
 600     wxCommandEvent event(wxEVT_COMMAND_TOOL_RCLICKED, id);
 601     event.SetEventObject(this);
 602     event.SetInt(id);
 603
 604     GetEventHandler()->ProcessEvent(event);
 605 }
 606
 607 // Called when the mouse cursor enters a tool bitmap (no button pressed).
 608 // Argument is wxID_ANY if mouse is exiting the toolbar.
 609 // Note that for this event, the id of the window is used,
 610 // and the integer parameter of wxCommandEvent is used to retrieve
 611 // the tool id.
 612 void wxToolBarBase::OnMouseEnter(int id)
 613 {
 614     wxCommandEvent event(wxEVT_COMMAND_TOOL_ENTER, GetId());
 615     event.SetEventObject(this);
 616     event.SetInt(id);
 617
 618     wxFrame *frame = wxDynamicCast(GetParent(), wxFrame);
 619     if( frame )
 620     {
 621         wxString help;
 622         wxToolBarToolBase* tool = id == wxID_ANY ? (wxToolBarToolBase*)NULL : FindById(id);
 623         if(tool)
 624             help = tool->GetLongHelp();
 625         frame->DoGiveHelp( help, id != wxID_ANY );
 626     }
 627
 628     (void)GetEventHandler()->ProcessEvent(event);
 629 }
 630
 631 // ----------------------------------------------------------------------------
 632 // UI updates
 633 // ----------------------------------------------------------------------------
 634
 635 // Do the toolbar button updates (check for EVT_UPDATE_UI handlers)
 636 void wxToolBarBase::UpdateWindowUI(long flags)
 637 {
 638     wxWindowBase::UpdateWindowUI(flags);
 639
 640     // There is no sense in updating the toolbar UI
 641     // if the parent window is about to get destroyed
 642     wxWindow *tlw = wxGetTopLevelParent( this );
 643     if (tlw && wxPendingDelete.Member( tlw ))
 644         return;
 645
 646     wxEvtHandler* evtHandler = GetEventHandler() ;
 647
 648     for ( wxToolBarToolsList::compatibility_iterator node = m_tools.GetFirst();
 649           node;
 650           node = node->GetNext() )
 651     {
 652         int id = node->GetData()->GetId();
 653
 654         wxUpdateUIEvent event(id);
 655         event.SetEventObject(this);
 656
 657         if ( evtHandler->ProcessEvent(event) )
 658         {
 659             if ( event.GetSetEnabled() )
 660                 EnableTool(id, event.GetEnabled());
 661             if ( event.GetSetChecked() )
 662                 ToggleTool(id, event.GetChecked());
 663 #if 0
 664             if ( event.GetSetText() )
 665                 // Set tooltip?
 666 #endif // 0
 667         }
 668     }
 669 }
 670
 671 #if wxUSE_IMAGE
 672
 673 /*
 674  * Make a greyed-out image suitable for disabled buttons.
 675  * This code is adapted from wxNewBitmapButton in FL.
 676  */
 677
 678 bool wxCreateGreyedImage(const wxImage& src, wxImage& dst)
 679 {
 680     dst = src.Copy();
 681
 682     unsigned char rBg, gBg, bBg;
 683     if ( src.HasMask() )
 684     {
 685         src.GetOrFindMaskColour(&rBg, &gBg, &bBg);
 686         dst.SetMaskColour(rBg, gBg, bBg);
 687     }
 688     else // assuming the pixels along the edges are of the background color
 689     {
 690         rBg = src.GetRed(0, 0);
 691         gBg = src.GetGreen(0, 0);
 692         bBg = src.GetBlue(0, 0);
 693     }
 694
 695     const wxColour colBg(rBg, gBg, bBg);
 696
 697     const wxColour colDark = wxSystemSettings::GetColour(wxSYS_COLOUR_3DSHADOW);
 698     const wxColour colLight = wxSystemSettings::GetColour(wxSYS_COLOUR_3DHIGHLIGHT);
 699
 700     // Second attempt, just making things monochrome
 701     const int width = src.GetWidth();
 702     const int height = src.GetHeight();
 703
 704     for ( int x = 0; x < width; x++ )
 705     {
 706         for ( int y = 0; y < height; y++ )
 707         {
 708             const int r = src.GetRed(x, y);
 709             const int g = src.GetGreen(x, y);
 710             const int b = src.GetBlue(x, y);
 711
 712             if ( r == rBg && g == gBg && b == bBg )
 713             {
 714                 // Leave the background colour as-is
 715                 continue;
 716             }
 717
 718             // Change light things to the background colour
 719             wxColour col;
 720             if ( r >= (colLight.Red() - 50) &&
 721                     g >= (colLight.Green() - 50) &&
 722                         b >= (colLight.Blue() - 50) )
 723             {
 724                 col = colBg;
 725             }
 726             else // Change dark things to really dark
 727             {
 728                 col = colDark;
 729             }
 730
 731             dst.SetRGB(x, y, col.Red(), col.Green(), col.Blue());
 732         }
 733     }
 734
 735     return true;
 736 }
 737
 738 #endif // wxUSE_IMAGE
 739
 740 #endif // wxUSE_TOOLBAR