samples/treectrl/treectrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        treectrl.cpp
   3 // Purpose:     wxTreeCtrl sample
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13   #pragma implementation
  14   #pragma interface
  15 #endif
  16
  17 // For compilers that support precompilation, includes "wx/wx.h".
  18 #include "wx/wxprec.h"
  19
  20 #ifdef __BORLANDC__
  21   #pragma hdrstop
  22 #endif
  23
  24 #ifndef WX_PRECOMP
  25   #include "wx/wx.h"
  26 #endif
  27
  28 #include "wx/log.h"
  29
  30 #include "wx/image.h"
  31 #include "wx/imaglist.h"
  32 #include "wx/treectrl.h"
  33
  34 #include "math.h"
  35
  36 #ifdef __WIN32__
  37     // this is not supported by native control
  38     #define NO_VARIABLE_HEIGHT
  39 #endif
  40
  41 #include "treectrl.h"
  42
  43 // under Windows the icons are in the .rc file
  44 #ifndef __WXMSW__
  45     #include "icon1.xpm"
  46     #include "icon2.xpm"
  47     #include "icon3.xpm"
  48     #include "icon4.xpm"
  49     #include "icon5.xpm"
  50     #include "mondrian.xpm"
  51 #endif
  52
  53 // verify that the item is ok and insult the user if it is not
  54 #define CHECK_ITEM( item ) if ( !item.IsOk() ) {                            \
  55                              wxMessageBox("Please select some item first!", \
  56                                           "Tree sample error",              \
  57                                           wxOK | wxICON_EXCLAMATION,        \
  58                                           this);                            \
  59                              return;                                        \
  60                            }
  61
  62 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  63     EVT_SIZE(MyFrame::OnSize)
  64
  65     EVT_MENU(TreeTest_Quit, MyFrame::OnQuit)
  66     EVT_MENU(TreeTest_About, MyFrame::OnAbout)
  67     EVT_MENU(TreeTest_Dump, MyFrame::OnDump)
  68 #ifndef NO_MULTIPLE_SELECTION
  69     EVT_MENU(TreeTest_DumpSelected, MyFrame::OnDumpSelected)
  70     EVT_MENU(TreeTest_Select, MyFrame::OnSelect)
  71     EVT_MENU(TreeTest_Unselect, MyFrame::OnUnselect)
  72     EVT_MENU(TreeTest_ToggleSel, MyFrame::OnToggleSel)
  73 #endif // NO_MULTIPLE_SELECTION
  74     EVT_MENU(TreeTest_Rename, MyFrame::OnRename)
  75     EVT_MENU(TreeTest_Count, MyFrame::OnCount)
  76     EVT_MENU(TreeTest_CountRec, MyFrame::OnCountRec)
  77     EVT_MENU(TreeTest_Sort, MyFrame::OnSort)
  78     EVT_MENU(TreeTest_SortRev, MyFrame::OnSortRev)
  79     EVT_MENU(TreeTest_Bold, MyFrame::OnSetBold)
  80     EVT_MENU(TreeTest_UnBold, MyFrame::OnClearBold)
  81     EVT_MENU(TreeTest_Delete, MyFrame::OnDelete)
  82     EVT_MENU(TreeTest_DeleteChildren, MyFrame::OnDeleteChildren)
  83     EVT_MENU(TreeTest_DeleteAll, MyFrame::OnDeleteAll)
  84     EVT_MENU(TreeTest_Recreate, MyFrame::OnRecreate)
  85     EVT_MENU(TreeTest_ToggleImages, MyFrame::OnToggleImages)
  86     EVT_MENU(TreeTest_SetImageSize, MyFrame::OnSetImageSize)
  87     EVT_MENU(TreeTest_CollapseAndReset, MyFrame::OnCollapseAndReset)
  88     EVT_MENU(TreeTest_EnsureVisible, MyFrame::OnEnsureVisible)
  89     EVT_MENU(TreeTest_AddItem, MyFrame::OnAddItem)
  90     EVT_MENU(TreeTest_InsertItem, MyFrame::OnInsertItem)
  91     EVT_MENU(TreeTest_IncIndent, MyFrame::OnIncIndent)
  92     EVT_MENU(TreeTest_DecIndent, MyFrame::OnDecIndent)
  93     EVT_MENU(TreeTest_IncSpacing, MyFrame::OnIncSpacing)
  94     EVT_MENU(TreeTest_DecSpacing, MyFrame::OnDecSpacing)
  95     EVT_MENU(TreeTest_ToggleIcon, MyFrame::OnToggleIcon)
  96 END_EVENT_TABLE()
  97
  98 BEGIN_EVENT_TABLE(MyTreeCtrl, wxTreeCtrl)
  99     EVT_TREE_BEGIN_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginDrag)
 100     EVT_TREE_BEGIN_RDRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginRDrag)
 101     EVT_TREE_END_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnEndDrag)
 102     EVT_TREE_BEGIN_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnBeginLabelEdit)
 103     EVT_TREE_END_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnEndLabelEdit)
 104     EVT_TREE_DELETE_ITEM(TreeTest_Ctrl, MyTreeCtrl::OnDeleteItem)
 105 #if 0       // there are so many of those that logging them causes flicker
 106     EVT_TREE_GET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnGetInfo)
 107 #endif
 108     EVT_TREE_SET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnSetInfo)
 109     EVT_TREE_ITEM_EXPANDED(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanded)
 110     EVT_TREE_ITEM_EXPANDING(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanding)
 111     EVT_TREE_ITEM_COLLAPSED(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsed)
 112     EVT_TREE_ITEM_COLLAPSING(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsing)
 113     EVT_TREE_SEL_CHANGED(TreeTest_Ctrl, MyTreeCtrl::OnSelChanged)
 114     EVT_TREE_SEL_CHANGING(TreeTest_Ctrl, MyTreeCtrl::OnSelChanging)
 115     EVT_TREE_KEY_DOWN(TreeTest_Ctrl, MyTreeCtrl::OnTreeKeyDown)
 116     EVT_TREE_ITEM_ACTIVATED(TreeTest_Ctrl, MyTreeCtrl::OnItemActivated)
 117     EVT_RIGHT_DCLICK(MyTreeCtrl::OnRMouseDClick)
 118 END_EVENT_TABLE()
 119
 120 IMPLEMENT_APP(MyApp)
 121
 122 bool MyApp::OnInit()
 123 {
 124     // Create the main frame window
 125     MyFrame *frame = new MyFrame("wxTreeCtrl Test", 50, 50, 450, 600);
 126
 127     // Show the frame
 128     frame->Show(TRUE);
 129     SetTopWindow(frame);
 130
 131     return TRUE;
 132 }
 133
 134
 135 // My frame constructor
 136 MyFrame::MyFrame(const wxString& title, int x, int y, int w, int h)
 137        : wxFrame((wxFrame *)NULL, -1, title, wxPoint(x, y), wxSize(w, h)),
 138          m_treeCtrl(NULL), m_textCtrl(NULL)
 139 {
 140     // This reduces flicker effects - even better would be to define
 141     // OnEraseBackground to do nothing. When the tree control's scrollbars are
 142     // show or hidden, the frame is sent a background erase event.
 143     SetBackgroundColour(wxColour(255, 255, 255));
 144
 145     // Give it an icon
 146     SetIcon(wxICON(mondrian));
 147
 148     // Make a menubar
 149     wxMenu *file_menu = new wxMenu,
 150            *tree_menu = new wxMenu,
 151            *item_menu = new wxMenu;
 152
 153     file_menu->Append(TreeTest_About, "&About...");
 154     file_menu->AppendSeparator();
 155     file_menu->Append(TreeTest_Quit, "E&xit\tAlt-X");
 156
 157 #ifndef NO_MULTIPLE_SELECTION
 158     tree_menu->Append(TreeTest_ToggleSel, "&Toggle selection mode");
 159 #endif // NO_MULTIPLE_SELECTION
 160     tree_menu->Append(TreeTest_ToggleImages, "&Show images", "", TRUE);
 161     tree_menu->Append(TreeTest_SetImageSize, "Set image si&ze...");
 162     tree_menu->Append(TreeTest_Recreate, "&Recreate the tree");
 163     tree_menu->Append(TreeTest_CollapseAndReset, "C&ollapse and reset");
 164     tree_menu->AppendSeparator();
 165     tree_menu->Append(TreeTest_AddItem, "Append a &new item");
 166     tree_menu->Append(TreeTest_InsertItem, "&Insert a new item");
 167     tree_menu->Append(TreeTest_Delete, "&Delete this item");
 168     tree_menu->Append(TreeTest_DeleteChildren, "Delete &children");
 169     tree_menu->Append(TreeTest_DeleteAll, "Delete &all items");
 170     tree_menu->AppendSeparator();
 171     tree_menu->Append(TreeTest_Count, "Count children of current item");
 172     tree_menu->Append(TreeTest_CountRec, "Recursively count children of current item");
 173     tree_menu->AppendSeparator();
 174     tree_menu->Append(TreeTest_Sort, "Sort children of current item");
 175     tree_menu->Append(TreeTest_SortRev, "Sort in reversed order");
 176     tree_menu->AppendSeparator();
 177     tree_menu->Append(TreeTest_EnsureVisible, "Make the last item &visible");
 178     tree_menu->AppendSeparator();
 179     tree_menu->Append(TreeTest_IncIndent, "Add 5 points to indentation\tAlt-I");
 180     tree_menu->Append(TreeTest_DecIndent, "Reduce indentation by 5 points\tAlt-R");
 181     tree_menu->AppendSeparator();
 182     tree_menu->Append(TreeTest_IncSpacing, "Add 5 points to spacing\tCtrl-I");
 183     tree_menu->Append(TreeTest_DecSpacing, "Reduce spacing by 5 points\tCtrl-R");
 184
 185     item_menu->Append(TreeTest_Dump, "&Dump item children");
 186     item_menu->Append(TreeTest_Rename, "&Rename item...");
 187
 188     item_menu->AppendSeparator();
 189     item_menu->Append(TreeTest_Bold, "Make item &bold");
 190     item_menu->Append(TreeTest_UnBold, "Make item &not bold");
 191     item_menu->AppendSeparator();
 192     item_menu->Append(TreeTest_ToggleIcon, "Toggle the items &icon");
 193
 194 #ifndef NO_MULTIPLE_SELECTION
 195     item_menu->AppendSeparator();
 196     item_menu->Append(TreeTest_DumpSelected, "Dump selected items\tAlt-D");
 197     item_menu->Append(TreeTest_Select, "Select current item\tAlt-S");
 198     item_menu->Append(TreeTest_Unselect, "Unselect everything\tAlt-U");
 199 #endif // NO_MULTIPLE_SELECTION
 200
 201     wxMenuBar *menu_bar = new wxMenuBar;
 202     menu_bar->Append(file_menu, "&File");
 203     menu_bar->Append(tree_menu, "&Tree");
 204     menu_bar->Append(item_menu, "&Item");
 205     SetMenuBar(menu_bar);
 206
 207     menu_bar->Check(TreeTest_ToggleImages, TRUE);
 208
 209     m_treeCtrl = new MyTreeCtrl(this, TreeTest_Ctrl,
 210                                 wxDefaultPosition, wxDefaultSize,
 211                                 wxTR_HAS_BUTTONS |
 212                                 wxTR_EDIT_LABELS |
 213 #ifndef NO_VARIABLE_HEIGHT
 214                                 wxTR_HAS_VARIABLE_ROW_HEIGHT |
 215 #endif
 216                                 wxSUNKEN_BORDER);
 217
 218     m_treeCtrl->SetBackgroundColour(wxColour(204, 205, 79));
 219
 220     m_textCtrl = new wxTextCtrl(this, -1, "",
 221                                 wxDefaultPosition, wxDefaultSize,
 222                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 223
 224     // create a status bar with 3 panes
 225     CreateStatusBar(3);
 226     SetStatusText("", 0);
 227
 228 #ifdef __WXMOTIF__
 229     // For some reason, we get a memcpy crash in wxLogStream::DoLogStream
 230     // on gcc/wxMotif, if we use wxLogTextCtl. Maybe it's just gcc?
 231     delete wxLog::SetActiveTarget(new wxLogStderr);
 232 #else
 233     // set our text control as the log target
 234     wxLogTextCtrl *logWindow = new wxLogTextCtrl(m_textCtrl);
 235     delete wxLog::SetActiveTarget(logWindow);
 236 #endif
 237 }
 238
 239 MyFrame::~MyFrame()
 240 {
 241     delete wxLog::SetActiveTarget(NULL);
 242 }
 243
 244 void MyFrame::OnSize(wxSizeEvent& event)
 245 {
 246     if ( m_treeCtrl && m_textCtrl )
 247     {
 248         Resize(GetClientSize());
 249     }
 250
 251     event.Skip();
 252 }
 253
 254 void MyFrame::Resize(const wxSize& size)
 255 {
 256     m_treeCtrl->SetSize(0, 0, size.x, 2*size.y/3);
 257     m_textCtrl->SetSize(0, 2*size.y/3, size.x, size.y/3);
 258 }
 259
 260 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 261 {
 262     Close(TRUE);
 263 }
 264
 265 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 266 {
 267     wxMessageBox("Tree test sample\n"
 268                  "(c) Julian Smart 1997, Vadim Zeitlin 1998",
 269                  "About tree test",
 270                  wxOK | wxICON_INFORMATION, this);
 271 }
 272
 273 void MyFrame::OnRename(wxCommandEvent& WXUNUSED(event))
 274 {
 275     wxTreeItemId item = m_treeCtrl->GetSelection();
 276
 277     CHECK_ITEM( item );
 278
 279     // old code - now we edit in place
 280 #if 0
 281     static wxString s_text;
 282     s_text = wxGetTextFromUser("New name: ", "Tree sample question",
 283             s_text, this);
 284     if ( !s_text.IsEmpty() )
 285     {
 286         m_treeCtrl->SetItemText(item, s_text);
 287     }
 288 #endif // 0
 289
 290     // TODO demonstrate creating a custom edit control...
 291     (void)m_treeCtrl->EditLabel(item);
 292 }
 293
 294 void MyFrame::OnCount(wxCommandEvent& WXUNUSED(event))
 295 {
 296     wxTreeItemId item = m_treeCtrl->GetSelection();
 297
 298     CHECK_ITEM( item );
 299
 300     int i = m_treeCtrl->GetChildrenCount( item, FALSE );
 301
 302     wxLogMessage(wxT("%d children"), i);
 303 }
 304
 305 void MyFrame::OnCountRec(wxCommandEvent& WXUNUSED(event))
 306 {
 307     wxTreeItemId item = m_treeCtrl->GetSelection();
 308
 309     CHECK_ITEM( item );
 310
 311     int i = m_treeCtrl->GetChildrenCount( item );
 312
 313     wxLogMessage(wxT("%d children"), i);
 314 }
 315
 316 void MyFrame::DoSort(bool reverse)
 317 {
 318     wxTreeItemId item = m_treeCtrl->GetSelection();
 319
 320     CHECK_ITEM( item );
 321
 322     m_treeCtrl->DoSortChildren(item, reverse);
 323 }
 324
 325 void MyFrame::OnDump(wxCommandEvent& WXUNUSED(event))
 326 {
 327     wxTreeItemId root = m_treeCtrl->GetSelection();
 328
 329     CHECK_ITEM( root );
 330
 331     m_treeCtrl->GetItemsRecursively(root, -1);
 332 }
 333
 334 #ifndef NO_MULTIPLE_SELECTION
 335
 336 void MyFrame::OnToggleSel(wxCommandEvent& WXUNUSED(event))
 337 {
 338     long style = m_treeCtrl->GetWindowStyle();
 339     if ( style & wxTR_MULTIPLE )
 340         style &= ~wxTR_MULTIPLE;
 341     else
 342         style |= wxTR_MULTIPLE;
 343
 344     delete m_treeCtrl;
 345
 346     m_treeCtrl = new MyTreeCtrl(this, TreeTest_Ctrl,
 347                                 wxDefaultPosition, wxDefaultSize,
 348                                 style);
 349     Resize(GetClientSize());
 350 }
 351
 352 void MyFrame::OnDumpSelected(wxCommandEvent& WXUNUSED(event))
 353 {
 354     wxArrayTreeItemIds array;
 355
 356     size_t count = m_treeCtrl->GetSelections(array);
 357     wxLogMessage(wxT("%u items selected"), count);
 358
 359     for ( size_t n = 0; n < count; n++ )
 360     {
 361         wxLogMessage("\t%s", m_treeCtrl->GetItemText(array.Item(n)).c_str());
 362     }
 363 }
 364
 365 void MyFrame::OnSelect(wxCommandEvent& event)
 366 {
 367     m_treeCtrl->SelectItem(m_treeCtrl->GetSelection());
 368 }
 369
 370 void MyFrame::OnUnselect(wxCommandEvent& event)
 371 {
 372     m_treeCtrl->UnselectAll();
 373 }
 374
 375 #endif // NO_MULTIPLE_SELECTION
 376
 377 void MyFrame::DoSetBold(bool bold)
 378 {
 379     wxTreeItemId item = m_treeCtrl->GetSelection();
 380
 381     CHECK_ITEM( item );
 382
 383     m_treeCtrl->SetItemBold(item, bold);
 384 }
 385
 386 void MyFrame::OnDelete(wxCommandEvent& WXUNUSED(event))
 387 {
 388     wxTreeItemId item = m_treeCtrl->GetSelection();
 389
 390     CHECK_ITEM( item );
 391
 392     m_treeCtrl->Delete(item);
 393 }
 394
 395 void MyFrame::OnDeleteChildren(wxCommandEvent& WXUNUSED(event))
 396 {
 397     wxTreeItemId item = m_treeCtrl->GetSelection();
 398
 399     CHECK_ITEM( item );
 400
 401     m_treeCtrl->DeleteChildren(item);
 402 }
 403
 404 void MyFrame::OnDeleteAll(wxCommandEvent& WXUNUSED(event))
 405 {
 406     m_treeCtrl->DeleteAllItems();
 407 }
 408
 409 void MyFrame::OnRecreate(wxCommandEvent& event)
 410 {
 411     OnDeleteAll(event);
 412     m_treeCtrl->AddTestItemsToTree(3, 2);
 413 }
 414
 415 void MyFrame::OnSetImageSize(wxCommandEvent& event)
 416 {
 417     long size = wxGetNumberFromUser("Enter the size for the images to use",
 418                                     "Size: ",
 419                                     "TreeCtrl sample",
 420                                     16);
 421     if ( size == -1 )
 422         return;
 423
 424     m_treeCtrl->CreateImageList((int)size);
 425
 426     OnRecreate(event);
 427 }
 428
 429 void MyFrame::OnToggleImages(wxCommandEvent& event)
 430 {
 431     wxGetApp().SetShowImages(!wxGetApp().ShowImages());
 432
 433     OnRecreate(event);
 434 }
 435
 436 void MyFrame::OnCollapseAndReset(wxCommandEvent& event)
 437 {
 438     m_treeCtrl->CollapseAndReset(m_treeCtrl->GetRootItem());
 439 }
 440
 441 void MyFrame::OnEnsureVisible(wxCommandEvent& event)
 442 {
 443     m_treeCtrl->DoEnsureVisible();
 444 }
 445
 446 void MyFrame::OnInsertItem(wxCommandEvent& WXUNUSED(event))
 447 {
 448     int image = wxGetApp().ShowImages() ? MyTreeCtrl::TreeCtrlIcon_File : -1;
 449     m_treeCtrl->InsertItem(m_treeCtrl->GetRootItem(), image, "2nd item");
 450 }
 451
 452 void MyFrame::OnAddItem(wxCommandEvent& WXUNUSED(event))
 453 {
 454     static int s_num = 0;
 455
 456     wxString text;
 457     text.Printf("Item #%d", ++s_num);
 458
 459     m_treeCtrl->AppendItem(m_treeCtrl->GetRootItem(),
 460                            text /*,
 461                            MyTreeCtrl::TreeCtrlIcon_File */ );
 462 }
 463
 464 void MyFrame::OnIncIndent(wxCommandEvent& WXUNUSED(event))
 465 {
 466     unsigned int indent = m_treeCtrl->GetIndent();
 467     if (indent < 100)
 468         m_treeCtrl->SetIndent( indent+5 );
 469 }
 470
 471 void MyFrame::OnDecIndent(wxCommandEvent& WXUNUSED(event))
 472 {
 473     unsigned int indent = m_treeCtrl->GetIndent();
 474     if (indent > 10)
 475         m_treeCtrl->SetIndent( indent-5 );
 476 }
 477
 478 void MyFrame::OnIncSpacing(wxCommandEvent& WXUNUSED(event))
 479 {
 480     unsigned int indent = m_treeCtrl->GetSpacing();
 481     if (indent < 100)
 482         m_treeCtrl->SetSpacing( indent+5 );
 483 }
 484
 485 void MyFrame::OnDecSpacing(wxCommandEvent& WXUNUSED(event))
 486 {
 487     unsigned int indent = m_treeCtrl->GetSpacing();
 488     if (indent > 10)
 489         m_treeCtrl->SetSpacing( indent-5 );
 490 }
 491
 492 void MyFrame::OnToggleIcon(wxCommandEvent& WXUNUSED(event))
 493 {
 494     wxTreeItemId item = m_treeCtrl->GetSelection();
 495
 496     CHECK_ITEM( item );
 497
 498     m_treeCtrl->DoToggleIcon(item);
 499 }
 500
 501 // MyTreeCtrl implementation
 502 IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxTreeCtrl)
 503
 504 MyTreeCtrl::MyTreeCtrl(wxWindow *parent, const wxWindowID id,
 505                        const wxPoint& pos, const wxSize& size,
 506                        long style)
 507           : wxTreeCtrl(parent, id, pos, size, style)
 508 {
 509     m_reverseSort = FALSE;
 510     m_imageListNormal = NULL;
 511
 512     CreateImageList();
 513
 514     // Add some items to the tree
 515     AddTestItemsToTree(3, 2);
 516 }
 517
 518 void MyTreeCtrl::CreateImageList(int size)
 519 {
 520     delete m_imageListNormal;
 521
 522     if ( size == -1 )
 523     {
 524         m_imageListNormal = NULL;
 525
 526         return;
 527     }
 528
 529     // Make an image list containing small icons
 530     m_imageListNormal = new wxImageList(size, size, TRUE);
 531
 532     // should correspond to TreeCtrlIcon_xxx enum
 533 #if defined(__WXMSW__) && defined(__WIN16__)
 534     m_imageListNormal->Add(wxBitmap("bitmap1", wxBITMAP_TYPE_BMP_RESOURCE));
 535     m_imageListNormal->Add(wxBitmap("bitmap2", wxBITMAP_TYPE_BMP_RESOURCE));
 536     m_imageListNormal->Add(wxBitmap("bitmap3", wxBITMAP_TYPE_BMP_RESOURCE));
 537     m_imageListNormal->Add(wxBitmap("bitmap4", wxBITMAP_TYPE_BMP_RESOURCE));
 538     m_imageListNormal->Add(wxBitmap("bitmap5", wxBITMAP_TYPE_BMP_RESOURCE));
 539 #else
 540     wxIcon icons[5];
 541     icons[0] = wxICON(icon1);
 542     icons[1] = wxICON(icon2);
 543     icons[2] = wxICON(icon3);
 544     icons[3] = wxICON(icon4);
 545     icons[4] = wxICON(icon5);
 546
 547     int sizeOrig = icons[0].GetWidth();
 548     for ( size_t i = 0; i < WXSIZEOF(icons); i++ )
 549     {
 550         if ( size == sizeOrig )
 551         {
 552             m_imageListNormal->Add(icons[i]);
 553         }
 554         else
 555         {
 556             m_imageListNormal->Add(wxImage(icons[i]).Rescale(size, size).
 557                                     ConvertToBitmap());
 558         }
 559     }
 560 #endif
 561
 562     SetImageList(m_imageListNormal);
 563 }
 564
 565 MyTreeCtrl::~MyTreeCtrl()
 566 {
 567     delete m_imageListNormal;
 568 }
 569
 570 int MyTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
 571                                const wxTreeItemId& item2)
 572 {
 573     if ( m_reverseSort )
 574     {
 575         // just exchange 1st and 2nd items
 576         return wxTreeCtrl::OnCompareItems(item2, item1);
 577     }
 578     else
 579     {
 580         return wxTreeCtrl::OnCompareItems(item1, item2);
 581     }
 582 }
 583
 584 void MyTreeCtrl::AddItemsRecursively(const wxTreeItemId& idParent,
 585                                      size_t numChildren,
 586                                      size_t depth,
 587                                      size_t folder)
 588 {
 589     if ( depth > 0 )
 590     {
 591         bool hasChildren = depth > 1;
 592
 593         wxString str;
 594         for ( size_t n = 0; n < numChildren; n++ )
 595         {
 596             // at depth 1 elements won't have any more children
 597             if ( hasChildren )
 598                 str.Printf("%s child %d", "Folder", n + 1);
 599             else
 600                 str.Printf("%s child %d.%d", "File", folder, n + 1);
 601
 602             // here we pass to AppendItem() normal and selected item images (we
 603             // suppose that selected image follows the normal one in the enum)
 604             int image, imageSel;
 605             if ( wxGetApp().ShowImages() )
 606             {
 607                 image = depth == 1 ? TreeCtrlIcon_File : TreeCtrlIcon_Folder;
 608                 imageSel = image + 1;
 609             }
 610             else
 611             {
 612                 image = imageSel = -1;
 613             }
 614             wxTreeItemId id = AppendItem(idParent, str, image, imageSel,
 615                                          new MyTreeItemData(str));
 616
 617             // and now we also set the expanded one (only for the folders)
 618             if ( hasChildren && wxGetApp().ShowImages() )
 619             {
 620                 SetItemImage(id, TreeCtrlIcon_FolderOpened,
 621                              wxTreeItemIcon_Expanded);
 622             }
 623
 624             // remember the last child for OnEnsureVisible()
 625             if ( !hasChildren && n == numChildren - 1 )
 626             {
 627                 m_lastItem = id;
 628             }
 629
 630             AddItemsRecursively(id, numChildren, depth - 1, n + 1);
 631         }
 632     }
 633     //else: done!
 634 }
 635
 636 void MyTreeCtrl::AddTestItemsToTree(size_t numChildren,
 637                                     size_t depth)
 638 {
 639     int image = wxGetApp().ShowImages() ? MyTreeCtrl::TreeCtrlIcon_Folder : -1;
 640     wxTreeItemId rootId = AddRoot("Root",
 641                                   image, image,
 642                                   new MyTreeItemData("Root item"));
 643     if ( image != -1 )
 644     {
 645         SetItemImage(rootId, TreeCtrlIcon_FolderOpened, wxTreeItemIcon_Expanded);
 646     }
 647
 648     AddItemsRecursively(rootId, numChildren, depth, 0);
 649
 650     // set some colours/fonts for testing
 651     SetItemFont(rootId, *wxITALIC_FONT);
 652
 653     long cookie;
 654     wxTreeItemId id = GetFirstChild(rootId, cookie);
 655     SetItemTextColour(id, *wxBLUE);
 656
 657     id = GetNextChild(rootId, cookie);
 658     id = GetNextChild(rootId, cookie);
 659     SetItemTextColour(id, *wxRED);
 660     SetItemBackgroundColour(id, *wxLIGHT_GREY);
 661 }
 662
 663 void MyTreeCtrl::GetItemsRecursively(const wxTreeItemId& idParent, long cookie)
 664 {
 665     wxTreeItemId id;
 666
 667     if( cookie == -1 )
 668         id = GetFirstChild(idParent, cookie);
 669     else
 670         id = GetNextChild(idParent, cookie);
 671
 672     if(id <= 0)
 673         return;
 674
 675     wxString text = GetItemText(id);
 676     wxLogMessage(text);
 677
 678     if (ItemHasChildren(id))
 679         GetItemsRecursively(id,-1);
 680
 681     GetItemsRecursively(idParent, cookie);
 682 }
 683
 684 void MyTreeCtrl::DoToggleIcon(const wxTreeItemId& item)
 685 {
 686     int image = GetItemImage(item) == TreeCtrlIcon_Folder ? TreeCtrlIcon_File
 687                                                           : TreeCtrlIcon_Folder;
 688
 689     SetItemImage(item, image);
 690 }
 691
 692
 693 // avoid repetition
 694 #define TREE_EVENT_HANDLER(name)                            \
 695 void MyTreeCtrl::name(wxTreeEvent& event)                   \
 696 {                                                           \
 697     wxLogMessage(#name);                                    \
 698     event.Skip();                                           \
 699 }
 700
 701 TREE_EVENT_HANDLER(OnBeginRDrag)
 702 TREE_EVENT_HANDLER(OnDeleteItem)
 703 TREE_EVENT_HANDLER(OnGetInfo)
 704 TREE_EVENT_HANDLER(OnSetInfo)
 705 TREE_EVENT_HANDLER(OnItemExpanded)
 706 TREE_EVENT_HANDLER(OnItemExpanding)
 707 TREE_EVENT_HANDLER(OnItemCollapsed)
 708 TREE_EVENT_HANDLER(OnSelChanged)
 709 TREE_EVENT_HANDLER(OnSelChanging)
 710 TREE_EVENT_HANDLER(OnTreeKeyDown)
 711
 712 #undef TREE_EVENT_HANDLER
 713
 714 void MyTreeCtrl::OnBeginDrag(wxTreeEvent& event)
 715 {
 716     // need to explicitly allow drag
 717     if ( event.GetItem() != GetRootItem() )
 718     {
 719         m_draggedItem = event.GetItem();
 720
 721         wxLogMessage("OnBeginDrag: started dragging %s",
 722                      GetItemText(m_draggedItem).c_str());
 723
 724         event.Allow();
 725     }
 726     else
 727     {
 728         wxLogMessage("OnBeginDrag: this item can't be dragged.");
 729     }
 730 }
 731
 732 void MyTreeCtrl::OnEndDrag(wxTreeEvent& event)
 733 {
 734     wxTreeItemId itemSrc = m_draggedItem,
 735                  itemDst = event.GetItem();
 736     m_draggedItem = (wxTreeItemId)0l;
 737
 738     // where to copy the item?
 739     if ( itemDst.IsOk() && !ItemHasChildren(itemDst) )
 740     {
 741         // copy to the parent then
 742         itemDst = GetParent(itemDst);
 743     }
 744
 745     if ( !itemDst.IsOk() )
 746     {
 747         wxLogMessage("OnEndDrag: can't drop here.");
 748
 749         return;
 750     }
 751
 752     wxString text = GetItemText(itemSrc);
 753     wxLogMessage("OnEndDrag: '%s' copied to '%s'.",
 754                  text.c_str(), GetItemText(itemDst).c_str());
 755
 756     // just do append here - we could also insert it just before/after the item
 757     // on which it was dropped, but this requires slightly more work... we also
 758     // completely ignore the client data and icon of the old item but could
 759     // copy them as well.
 760     //
 761     // Finally, we only copy one item here but we might copy the entire tree if
 762     // we were dragging a folder.
 763     int image = wxGetApp().ShowImages() ? TreeCtrlIcon_File : -1;
 764     AppendItem(itemDst, text, image);
 765 }
 766
 767 void MyTreeCtrl::OnBeginLabelEdit(wxTreeEvent& event)
 768 {
 769     wxLogMessage("OnBeginLabelEdit");
 770
 771     // for testing, prevent this items label editing
 772     wxTreeItemId itemId = event.GetItem();
 773     if ( IsTestItem(itemId) )
 774     {
 775         wxMessageBox("You can't edit this item.");
 776
 777         event.Veto();
 778     }
 779 }
 780
 781 void MyTreeCtrl::OnEndLabelEdit(wxTreeEvent& event)
 782 {
 783     wxLogMessage("OnEndLabelEdit");
 784
 785     // don't allow anything except letters in the labels
 786     if ( !event.GetLabel().IsWord() )
 787     {
 788         wxMessageBox("The label should contain only letters.");
 789
 790         event.Veto();
 791     }
 792 }
 793
 794 void MyTreeCtrl::OnItemCollapsing(wxTreeEvent& event)
 795 {
 796     wxLogMessage("OnItemCollapsing");
 797
 798     // for testing, prevent the user from collapsing the first child folder
 799     wxTreeItemId itemId = event.GetItem();
 800     if ( IsTestItem(itemId) )
 801     {
 802         wxMessageBox("You can't collapse this item.");
 803
 804         event.Veto();
 805     }
 806 }
 807
 808 void MyTreeCtrl::OnItemActivated(wxTreeEvent& event)
 809 {
 810     // show some info about this item
 811     wxTreeItemId itemId = event.GetItem();
 812     MyTreeItemData *item = (MyTreeItemData *)GetItemData(itemId);
 813
 814     if ( item != NULL )
 815     {
 816         item->ShowInfo(this);
 817     }
 818
 819     wxLogMessage("OnItemActivated");
 820 }
 821
 822 void MyTreeCtrl::OnRMouseDClick(wxMouseEvent& event)
 823 {
 824     wxTreeItemId id = HitTest(event.GetPosition());
 825     if ( !id )
 826         wxLogMessage("No item under mouse");
 827     else
 828     {
 829         MyTreeItemData *item = (MyTreeItemData *)GetItemData(id);
 830         if ( item )
 831             wxLogMessage("Item '%s' under mouse", item->GetDesc());
 832     }
 833 }
 834
 835 static inline const char *Bool2String(bool b)
 836 {
 837     return b ? "" : "not ";
 838 }
 839
 840 void MyTreeItemData::ShowInfo(wxTreeCtrl *tree)
 841 {
 842     wxLogMessage("Item '%s': %sselected, %sexpanded, %sbold,\n"
 843                  "%u children (%u immediately under this item).",
 844                  m_desc.c_str(),
 845                  Bool2String(tree->IsSelected(GetId())),
 846                  Bool2String(tree->IsExpanded(GetId())),
 847                  Bool2String(tree->IsBold(GetId())),
 848                  tree->GetChildrenCount(GetId()),
 849                  tree->GetChildrenCount(GetId(), FALSE));
 850 }