src/generic/treectrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        treectrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Created:     01/02/97
   6 // Id:
   7 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifdef __GNUG__
  12 #pragma implementation "treectrl.h"
  13 #endif
  14
  15 #include "wx/treectrl.h"
  16 #include "wx/settings.h"
  17
  18 //-----------------------------------------------------------------------------
  19 // wxTreeItem
  20 //-----------------------------------------------------------------------------
  21
  22 IMPLEMENT_DYNAMIC_CLASS(wxTreeItem, wxObject)
  23
  24 wxTreeItem::wxTreeItem()
  25 {
  26   m_mask = 0;
  27   m_itemId = 0;
  28   m_state = 0;
  29   m_stateMask = 0;
  30   m_image = -1;
  31   m_selectedImage = -1;
  32   m_children = 0;
  33   m_data = 0;
  34 };
  35
  36 //-----------------------------------------------------------------------------
  37 // wxTreeEvent
  38 //-----------------------------------------------------------------------------
  39
  40 IMPLEMENT_DYNAMIC_CLASS(wxTreeEvent,wxCommandEvent)
  41
  42 wxTreeEvent::wxTreeEvent( wxEventType commandType, int id ) :
  43   wxCommandEvent( commandType, id )
  44 {
  45   m_code = 0;
  46   m_oldItem = 0;
  47 };
  48
  49 //-----------------------------------------------------------------------------
  50 // wxGenericTreeItem
  51 //-----------------------------------------------------------------------------
  52
  53 IMPLEMENT_DYNAMIC_CLASS(wxGenericTreeItem,wxObject)
  54
  55 wxGenericTreeItem::wxGenericTreeItem( wxGenericTreeItem *parent )
  56 {
  57   Reset();
  58   m_parent = parent;
  59   m_hasHilight = FALSE;
  60 };
  61
  62 wxGenericTreeItem::wxGenericTreeItem( wxGenericTreeItem *parent, const wxTreeItem& item, wxDC *dc )
  63 {
  64   Reset();
  65   SetItem( item, dc );
  66   m_parent = parent;
  67   m_hasHilight = FALSE;
  68 };
  69
  70 void wxGenericTreeItem::SetItem( const wxTreeItem &item, wxDC *dc )
  71 {
  72   if ((item.m_mask & wxTREE_MASK_HANDLE) == wxTREE_MASK_HANDLE)
  73     m_itemId = item.m_itemId;
  74   if ((item.m_mask & wxTREE_MASK_STATE) == wxTREE_MASK_STATE)
  75     m_state = item.m_state;
  76   if ((item.m_mask & wxTREE_MASK_TEXT) == wxTREE_MASK_TEXT)
  77     m_text = item.m_text;
  78   if ((item.m_mask & wxTREE_MASK_IMAGE) == wxTREE_MASK_IMAGE)
  79     m_image = item.m_image;
  80   if ((item.m_mask & wxTREE_MASK_SELECTED_IMAGE) == wxTREE_MASK_SELECTED_IMAGE)
  81     m_selectedImage = item.m_selectedImage;
  82   if ((item.m_mask & wxTREE_MASK_CHILDREN) == wxTREE_MASK_CHILDREN)
  83     m_hasChildren = (item.m_children > 0);
  84   if ((item.m_mask & wxTREE_MASK_DATA) == wxTREE_MASK_DATA)
  85     m_data = item.m_data;
  86   long lw = 0;
  87   long lh = 0;
  88   dc->GetTextExtent( m_text, &lw, &lh );
  89   m_width = lw;
  90   m_height = lh;
  91 };
  92
  93 void wxGenericTreeItem::SetText( const wxString &text, wxDC *dc )
  94 {
  95   m_text = text;
  96   long lw = 0;
  97   long lh = 0;
  98   dc->GetTextExtent( m_text, &lw, &lh );
  99   m_width = lw;
 100   m_height = lh;
 101 };
 102
 103 void wxGenericTreeItem::Reset()
 104 {
 105   m_itemId = -1;
 106   m_state = 0;
 107   m_text = "";
 108   m_image = -1;
 109   m_selectedImage = -1;
 110 //  m_children = 0;
 111   m_hasChildren = FALSE;
 112   m_data = 0;
 113   m_x = 0;
 114   m_y = 0;
 115   m_height = 0;
 116   m_width = 0;
 117   m_xCross = 0;
 118   m_yCross = 0;
 119   m_level = 0;
 120   m_children.DeleteContents( TRUE );
 121   m_isCollapsed = TRUE;
 122   m_parent = NULL;
 123 };
 124
 125 void wxGenericTreeItem::GetItem( wxTreeItem &item ) const
 126 {
 127   if ((item.m_mask & wxTREE_MASK_STATE) == wxTREE_MASK_STATE)
 128     item.m_state = m_state;
 129   if ((item.m_mask & wxTREE_MASK_TEXT) == wxTREE_MASK_TEXT)
 130     item.m_text = m_text;
 131   if ((item.m_mask & wxTREE_MASK_IMAGE) == wxTREE_MASK_IMAGE)
 132     item.m_image = m_image;
 133   if ((item.m_mask & wxTREE_MASK_SELECTED_IMAGE) == wxTREE_MASK_SELECTED_IMAGE)
 134     item.m_selectedImage = m_selectedImage;
 135   if ((item.m_mask & wxTREE_MASK_CHILDREN) == wxTREE_MASK_CHILDREN)
 136     item.m_children = (int)m_hasChildren;
 137   if ((item.m_mask & wxTREE_MASK_DATA) == wxTREE_MASK_DATA)
 138     item.m_data = m_data;
 139 };
 140
 141 bool wxGenericTreeItem::HasChildren()
 142 {
 143   return m_hasChildren;
 144 };
 145
 146 bool wxGenericTreeItem::HasPlus()
 147 {
 148   if ( !HasChildren() )
 149     return FALSE;
 150
 151   return !IsExpanded();
 152 };
 153
 154 int wxGenericTreeItem::NumberOfVisibleDescendents()
 155 {
 156   int ret = m_children.Number();
 157   wxNode *node = m_children.First();
 158   while (node)
 159   {
 160     wxGenericTreeItem *item = (wxGenericTreeItem*)node->Data();
 161     ret += item->NumberOfVisibleDescendents();
 162     node = node->Next();
 163   };
 164   return ret;
 165 };
 166
 167 int wxGenericTreeItem::NumberOfVisibleChildren()
 168 {
 169   return m_isCollapsed ? 0 : m_children.Number();
 170 };
 171
 172 wxGenericTreeItem *wxGenericTreeItem::FindItem( long itemId ) const
 173 {
 174   if (m_itemId == itemId) return (wxGenericTreeItem*)(this);
 175   wxNode *node = m_children.First();
 176   while (node)
 177   {
 178     wxGenericTreeItem *item = (wxGenericTreeItem*)node->Data();
 179     wxGenericTreeItem *res = item->FindItem( itemId );
 180     if (res) return (wxGenericTreeItem*)(res);
 181     node = node->Next();
 182   };
 183   return NULL;
 184 };
 185
 186 void wxGenericTreeItem::AddChild( wxGenericTreeItem *child )
 187 {
 188   m_children.Append( child );
 189 };
 190
 191 void wxGenericTreeItem::SetCross( int x, int y )
 192 {
 193   m_xCross = x;
 194   m_yCross = y;
 195 };
 196
 197 void wxGenericTreeItem::GetSize( int &x, int &y )
 198 {
 199   if (y < m_y + 10) y = m_y +10;
 200   int width = m_x +  m_width;
 201   if (width > x) x = width;
 202   wxNode *node = m_children.First();
 203   while (node)
 204   {
 205     wxGenericTreeItem *item = (wxGenericTreeItem*)node->Data();
 206     item->GetSize( x, y );
 207     node = node->Next();
 208   };
 209 };
 210
 211 long wxGenericTreeItem::HitTest( const wxPoint& point, int &flags )
 212 {
 213   if (m_parent && ((point.y > m_y) && (point.y < m_y+m_height)))
 214   {
 215     if ((point.x > m_xCross-5) &&
 216         (point.x < m_xCross+5) &&
 217         (point.y > m_yCross-5) &&
 218         (point.y < m_yCross+5) &&
 219         (m_hasChildren))
 220     {
 221       flags = wxTREE_HITTEST_ONITEMBUTTON;
 222       return m_itemId;
 223     };
 224     if ((point.x > m_x) && (point.x < m_x+m_width))
 225     {
 226       flags = wxTREE_HITTEST_ONITEMLABEL;
 227       return m_itemId;
 228     };
 229     if (point.x > m_x)
 230     {
 231       flags = wxTREE_HITTEST_ONITEMRIGHT;
 232       return m_itemId;
 233     };
 234     flags = wxTREE_HITTEST_ONITEMINDENT;
 235     return m_itemId;
 236   }
 237   else
 238   {
 239     wxNode *node = m_children.First();
 240     while (node)
 241     {
 242       wxGenericTreeItem *child = (wxGenericTreeItem*)node->Data();
 243       long res = child->HitTest( point, flags );
 244       if (res != -1) return res;
 245       node = node->Next();
 246     };
 247   };
 248   return -1;
 249 };
 250
 251 void wxGenericTreeItem::PrepareEvent( wxTreeEvent &event )
 252 {
 253   event.m_item.m_itemId = m_itemId;
 254   event.m_item.m_state = m_state;
 255   event.m_item.m_text = m_text;
 256   event.m_item.m_image = m_image;
 257   event.m_item.m_selectedImage = m_selectedImage;
 258   event.m_item.m_children = (int)m_hasChildren;
 259   event.m_item.m_data = m_data;
 260   event.m_oldItem = 0;
 261   event.m_code = 0;
 262   event.m_pointDrag.x = 0;
 263   event.m_pointDrag.y = 0;
 264 };
 265
 266 void wxGenericTreeItem::SendKeyDown( wxWindow *target )
 267 {
 268   wxTreeEvent event( wxEVT_COMMAND_TREE_KEY_DOWN, target->GetId() );
 269   PrepareEvent( event );
 270   event.SetEventObject( target );
 271   target->ProcessEvent( event );
 272 };
 273
 274 void wxGenericTreeItem::SendSelected( wxWindow *target )
 275 {
 276   wxTreeEvent event( wxEVT_COMMAND_TREE_SEL_CHANGED, target->GetId() );
 277   PrepareEvent( event );
 278   event.SetEventObject( target );
 279   target->ProcessEvent( event );
 280 };
 281
 282 void wxGenericTreeItem::SendDelete( wxWindow *target )
 283 {
 284   wxTreeEvent event( wxEVT_COMMAND_TREE_DELETE_ITEM, target->GetId() );
 285   PrepareEvent( event );
 286   event.SetEventObject( target );
 287   target->ProcessEvent( event );
 288 };
 289
 290 void wxGenericTreeItem::SendExpand( wxWindow *target )
 291 {
 292   m_isCollapsed = FALSE;
 293
 294   wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_EXPANDING, target->GetId() );
 295   event.SetCode(wxTREE_EXPAND_EXPAND);
 296   event.SetEventObject( target );
 297   PrepareEvent( event );
 298   target->ProcessEvent( event );
 299
 300   event.SetEventType(wxEVT_COMMAND_TREE_ITEM_EXPANDED);
 301   PrepareEvent( event );
 302   target->ProcessEvent( event );
 303 };
 304
 305 void wxGenericTreeItem::SendCollapse( wxWindow *target )
 306 {
 307   m_isCollapsed = TRUE;
 308
 309   wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_EXPANDING, target->GetId() );
 310   event.SetCode(wxTREE_EXPAND_COLLAPSE);
 311   event.SetEventObject( target );
 312   PrepareEvent( event );
 313   target->ProcessEvent( event );
 314
 315   event.SetEventType(wxEVT_COMMAND_TREE_ITEM_EXPANDED);
 316   PrepareEvent( event );
 317   target->ProcessEvent( event );
 318 };
 319
 320 void wxGenericTreeItem::SetHilight( bool set )
 321 {
 322   m_hasHilight = set;
 323 };
 324
 325 bool wxGenericTreeItem::HasHilight()
 326 {
 327   return m_hasHilight;
 328 };
 329
 330 //-----------------------------------------------------------------------------
 331 // wxTreeCtrl
 332 //-----------------------------------------------------------------------------
 333
 334 IMPLEMENT_DYNAMIC_CLASS(wxTreeCtrl,wxScrolledWindow
 335 )
 336
 337 BEGIN_EVENT_TABLE(wxTreeCtrl,wxScrolledWindow)
 338   EVT_PAINT          (wxTreeCtrl::OnPaint)
 339   EVT_MOUSE_EVENTS   (wxTreeCtrl::OnMouse)
 340   EVT_CHAR           (wxTreeCtrl::OnChar)
 341   EVT_SET_FOCUS      (wxTreeCtrl::OnSetFocus)
 342   EVT_KILL_FOCUS     (wxTreeCtrl::OnKillFocus)
 343 END_EVENT_TABLE()
 344
 345 wxTreeCtrl::wxTreeCtrl()
 346 {
 347   m_current = NULL;
 348   m_anchor = NULL;
 349   m_hasFocus = FALSE;
 350   m_xScroll = 0;
 351   m_yScroll = 0;
 352   m_lastId = 0;
 353   m_lineHeight = 10;
 354   m_indent = 15;
 355   m_isCreated = FALSE;
 356   m_dc = NULL;
 357   m_hilightBrush = new wxBrush( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_HIGHLIGHT), wxSOLID );
 358 };
 359
 360 wxTreeCtrl::wxTreeCtrl(wxWindow *parent, const wxWindowID id,
 361             const wxPoint& pos,
 362  const wxSize& size,
 363             long style, const wxString& name )
 364 {
 365   m_current = NULL;
 366   m_anchor = NULL;
 367   m_hasFocus = FALSE;
 368   m_xScroll = 0;
 369   m_yScroll = 0;
 370   m_lastId = 0;
 371   m_lineHeight = 10;
 372   m_indent = 15;
 373   m_isCreated = FALSE;
 374   m_dc = NULL;
 375   m_hilightBrush = new wxBrush( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_HIGHLIGHT), wxSOLID );
 376   Create( parent, id, pos, size, style, name );
 377 };
 378
 379 wxTreeCtrl::~wxTreeCtrl()
 380 {
 381   if (m_dc) delete m_dc;
 382 };
 383
 384 bool wxTreeCtrl::Create(wxWindow *parent, const wxWindowID id,
 385             const wxPoint& pos,
 386  const wxSize& size,
 387             long style
 388 , const wxString& name )
 389 {
 390   wxScrolledWindow::Create( parent, id, pos, size, style, name );
 391   SetBackgroundColour( *wxWHITE );
 392   m_dottedPen = wxPen( *wxBLACK, 0, 0 );
 393   return TRUE;
 394 };
 395
 396 int wxTreeCtrl::GetCount() const
 397 {
 398   if (!m_anchor) return 0;
 399   return m_anchor->NumberOfVisibleDescendents();
 400 };
 401
 402 long wxTreeCtrl::InsertItem( long parent, const wxString& label, int image,
 403       int selImage, long WXUNUSED(insertAfter) )
 404 {
 405   wxGenericTreeItem *p = NULL;
 406   if (parent == 0)
 407   {
 408     if (m_anchor) return -1;
 409   }
 410   else
 411   {
 412     p = FindItem( parent );
 413     if (!p) return -1;
 414   };
 415   wxTreeItem item;
 416   m_lastId++;
 417   item.m_mask = wxTREE_MASK_HANDLE;
 418   item.m_itemId = m_lastId;
 419   if (!label.IsNull() || (label == ""))
 420   {
 421     item.m_text = label;
 422     item.m_mask |= wxTREE_MASK_TEXT;
 423   };
 424   if (image >= 0)
 425   {
 426     item.m_image = image;
 427     item.m_mask |= wxTREE_MASK_IMAGE;
 428   };
 429   if (selImage >= 0)
 430   {
 431     item.m_selectedImage = selImage;
 432     item.m_mask |= wxTREE_MASK_SELECTED_IMAGE;
 433   };
 434
 435   wxClientDC dc(this);
 436   wxGenericTreeItem *new_child = new wxGenericTreeItem( p, item, &dc );
 437   if (p)
 438     p->AddChild( new_child );
 439   else
 440     m_anchor = new_child;
 441
 442   if (p)
 443   {
 444     CalculatePositions();
 445
 446     int ch = 0;
 447     GetClientSize( NULL, &ch );
 448
 449     wxRectangle rect;
 450     rect.x = 0; rect.y = 0;
 451     rect.width = 10000; rect.height = ch;
 452
 453     PrepareDC( dc );
 454     if (p->m_children.Number() == 1)
 455     {
 456       rect.y = dc.LogicalToDeviceY( p->m_y );
 457     }
 458     else
 459     {
 460       wxNode *node = p->m_children.Member( new_child )->Previous();
 461       wxGenericTreeItem* last_child = (wxGenericTreeItem*)node->Data();
 462       rect.y = dc.LogicalToDeviceY( last_child->m_y );
 463     };
 464
 465     long doX = 0;
 466     long doY = 0;
 467     dc.GetDeviceOrigin( &doX, &doY );
 468     rect.height = ch-rect.y-doY;
 469
 470     AdjustMyScrollbars();
 471
 472     if (rect.height > 0) Refresh( FALSE, &rect);
 473   }
 474   else
 475   {
 476     AdjustMyScrollbars();
 477
 478     Refresh();
 479   };
 480
 481   return m_lastId;
 482 };
 483
 484 long wxTreeCtrl::InsertItem( long parent, wxTreeItem &info, long WXUNUSED(insertAfter) )
 485 {
 486   int oldMask = info.m_mask;
 487   wxGenericTreeItem *p = NULL;
 488   if (parent == 0)
 489   {
 490     if (m_anchor) return -1;
 491   }
 492   else
 493   {
 494     p = FindItem( parent );
 495     if (!p)
 496     {
 497       printf( "TreeItem not found.\n" );
 498       return -1;
 499     };
 500   };
 501   long ret = 0;
 502   if ((info.m_mask & wxTREE_MASK_HANDLE) == 0)
 503   {
 504     m_lastId++;
 505     info.m_itemId = m_lastId;
 506     info.m_mask |= wxTREE_MASK_HANDLE;
 507     ret = m_lastId;
 508   }
 509   else
 510   {
 511     ret = info.m_itemId;
 512   };
 513
 514   wxClientDC dc(this);
 515   wxGenericTreeItem *new_child = new wxGenericTreeItem( p, info, &dc );
 516   if (p)
 517     p->AddChild( new_child );
 518   else
 519     m_anchor = new_child;
 520
 521   if (p)
 522   {
 523     CalculatePositions();
 524
 525     int ch = 0;
 526     GetClientSize( NULL, &ch );
 527
 528     wxRectangle rect;
 529     rect.x = 0; rect.y = 0;
 530     rect.width = 10000; rect.height = ch;
 531
 532     PrepareDC( dc );
 533     if (p->m_children.Number() == 1)
 534     {
 535       rect.y = dc.LogicalToDeviceY( p->m_y );
 536     }
 537     else
 538     {
 539       wxNode *node = p->m_children.Member( new_child )->Previous();
 540       wxGenericTreeItem* last_child = (wxGenericTreeItem*)node->Data();
 541       rect.y = dc.LogicalToDeviceY( last_child->m_y );
 542     };
 543
 544     long doX = 0;
 545     long doY = 0;
 546     dc.GetDeviceOrigin( &doX, &doY );
 547     rect.height = ch-rect.y-doY;
 548
 549     AdjustMyScrollbars();
 550
 551     if (rect.height > 0) Refresh( FALSE, &rect);
 552   }
 553   else
 554   {
 555     AdjustMyScrollbars();
 556
 557     Refresh();
 558   };
 559
 560   info.m_mask = oldMask;
 561   return ret;
 562 };
 563
 564 bool wxTreeCtrl::ExpandItem( long item, int action )
 565 {
 566   wxGenericTreeItem *i = FindItem( item );
 567   if (!i)
 568     return FALSE;
 569
 570   switch (action)
 571   {
 572     case wxTREE_EXPAND_EXPAND:
 573     {
 574       i->SendExpand( this );
 575       break;
 576     }
 577
 578     case wxTREE_EXPAND_COLLAPSE_RESET:
 579     case wxTREE_EXPAND_COLLAPSE:
 580     {
 581       wxNode *node = i->m_children.First();
 582       while (node)
 583       {
 584         wxGenericTreeItem *child = (wxGenericTreeItem*)node->Data();
 585 #if 0 // VZ: don't delete items when the branch is collapsed
 586         child->SendDelete( this );
 587         delete node;
 588         node = i->m_children.First();
 589 #else
 590         if ( child->IsExpanded() )
 591           ExpandItem( child->m_itemId, wxTREE_EXPAND_COLLAPSE );
 592         node = node->Next();
 593 #endif
 594       };
 595
 596       i->SendCollapse( this );
 597       break;
 598     }
 599
 600     case wxTREE_EXPAND_TOGGLE:
 601     {
 602       if ( i->IsExpanded() )
 603         ExpandItem( item, wxTREE_EXPAND_COLLAPSE );
 604       else
 605         ExpandItem( item, wxTREE_EXPAND_EXPAND );
 606       return TRUE;
 607     }
 608   };
 609
 610   int cw = 0;
 611   int ch = 0;
 612   GetClientSize( &cw, &ch );
 613   wxRect rect;
 614   rect.x = 0;
 615   rect.width = cw;
 616   wxClientDC dc(this);
 617   PrepareDC(dc);
 618   rect.y = dc.LogicalToDeviceY( i->m_y );
 619
 620   long doY = 0;
 621   dc.GetDeviceOrigin( NULL, &doY );
 622   rect.height = ch-rect.y-doY;
 623   Refresh( TRUE, &rect );
 624
 625   AdjustMyScrollbars();
 626
 627   return TRUE;
 628 };
 629
 630 bool wxTreeCtrl::DeleteAllItems()
 631 {
 632   delete m_anchor;
 633   m_anchor = NULL;
 634   Refresh();
 635   return TRUE;
 636 };
 637
 638 bool wxTreeCtrl::GetItem( wxTreeItem &info ) const
 639 {
 640   wxGenericTreeItem *i = FindItem( info.m_itemId );
 641   if (!i) return FALSE;
 642   i->GetItem( info );
 643   return TRUE;
 644 };
 645
 646 long wxTreeCtrl::GetItemData( long item ) const
 647 {
 648   wxGenericTreeItem *i = FindItem( item );
 649   if (!i) return 0;
 650   return i->m_data;
 651 };
 652
 653 wxString wxTreeCtrl::GetItemText( long item ) const
 654 {
 655   wxGenericTreeItem *i = FindItem( item );
 656   if (!i) return "";
 657   return i->m_text;
 658 };
 659
 660 int wxTreeCtrl::GetItemImage(long item) const
 661 {
 662   wxGenericTreeItem *i = FindItem( item );
 663   return i == 0 ? -1 : i->GetImage();
 664 }
 665
 666 long wxTreeCtrl::GetParent( long item ) const
 667 {
 668   wxGenericTreeItem *i = FindItem( item );
 669   if (!i) return -1;
 670   i = i->m_parent;
 671   if (!i) return -1;
 672   return i->m_parent->m_itemId;
 673 };
 674
 675 long wxTreeCtrl::GetRootItem() const
 676 {
 677   if (m_anchor) return m_anchor->m_itemId;
 678   return -1;
 679 };
 680
 681 long wxTreeCtrl::GetSelection() const
 682 {
 683   return 0;
 684 };
 685
 686 bool wxTreeCtrl::SelectItem( long WXUNUSED(item) ) const
 687 {
 688   return FALSE;
 689 };
 690
 691 bool wxTreeCtrl::ItemHasChildren( long item ) const
 692 {
 693   wxGenericTreeItem *i = FindItem( item );
 694   if (!i) return FALSE;
 695   return i->m_hasChildren;
 696 };
 697
 698 void wxTreeCtrl::SetIndent( int indent )
 699 {
 700   m_indent = indent;
 701   Refresh();
 702 };
 703
 704 int wxTreeCtrl::GetIndent() const
 705 {
 706   return m_indent;
 707 };
 708
 709 bool wxTreeCtrl::SetItem( wxTreeItem &info )
 710 {
 711   wxGenericTreeItem *i = FindItem( info.m_itemId );
 712   if (!i) return FALSE;
 713   wxClientDC dc(this);
 714   i->SetItem( info, &dc );
 715   Refresh();
 716   return TRUE;
 717 };
 718
 719 bool wxTreeCtrl::SetItemData( long item, long data )
 720 {
 721   wxGenericTreeItem *i = FindItem( item );
 722   if (!i) return FALSE;
 723   i->m_data = data;
 724   return TRUE;
 725 };
 726
 727 bool wxTreeCtrl::SetItemText( long item, const wxString &text )
 728 {
 729   wxGenericTreeItem *i = FindItem( item );
 730   if (!i) return FALSE;
 731   wxClientDC dc(this);
 732   i->SetText( text, &dc );
 733   return TRUE;
 734 };
 735
 736 void wxTreeCtrl::SetItemImage(long item, int image, int imageSel) const
 737 {
 738   wxGenericTreeItem *i = FindItem( item );
 739   if ( i != 0 ) {
 740     i->SetImage(image);
 741     i->SetSelectedImage(imageSel);
 742   }
 743 }
 744
 745 long wxTreeCtrl::HitTest( const wxPoint& point, int &flags )
 746 {
 747   flags = 0;
 748   if (!m_anchor) return -1;
 749   return m_anchor->HitTest( point, flags );
 750 };
 751
 752 void wxTreeCtrl::AdjustMyScrollbars()
 753 {
 754   if (m_anchor)
 755   {
 756     int x = 0;
 757     int y = 0;
 758     m_anchor->GetSize( x, y );
 759     y += 2*m_lineHeight;
 760     int x_pos = GetScrollPos( wxHORIZONTAL );
 761     int y_pos = GetScrollPos( wxVERTICAL );
 762     SetScrollbars( 10, 10, x/10, y/10, x_pos, y_pos );
 763   }
 764   else
 765   {
 766     SetScrollbars( 0, 0, 0, 0 );
 767   };
 768 };
 769
 770 void wxTreeCtrl::PaintLevel( wxGenericTreeItem *item, wxPaintDC &dc, int level, int &y )
 771 {
 772   int horizX = level*m_indent+10;
 773   int oldY = y;
 774   wxNode *node = item->m_children.First();
 775   while (node)
 776   {
 777     wxGenericTreeItem *child = (wxGenericTreeItem *)node->Data();
 778     dc.SetPen( m_dottedPen );
 779
 780     child->SetCross( horizX+15, y );
 781
 782     if (!node->Next())
 783     {
 784       if (level != 0) oldY -= (m_lineHeight-5);
 785       dc.DrawLine( horizX, oldY, horizX, y );
 786     };
 787
 788     child->m_x = horizX+33;
 789     child->m_y = y-m_lineHeight/3;
 790     child->m_height = m_lineHeight;
 791
 792     if (IsExposed( 0, child->m_y-2, 10000, m_lineHeight+4 ))
 793     {
 794       int startX = horizX,
 795           endX = horizX + 10;
 796
 797       if (!(node->Previous()) && (level == 0))
 798         startX -= 10;
 799       if (!child->HasChildren())
 800         endX += 20;
 801       dc.DrawLine( startX, y, endX, y );
 802
 803       if (child->HasChildren())
 804       {
 805         dc.DrawLine( horizX+20, y, horizX+30, y );
 806         dc.SetPen( *wxGREY_PEN );
 807         dc.DrawRectangle( horizX+10, y-4, 11, 9 );
 808         dc.SetPen( *wxBLACK_PEN );
 809         dc.DrawLine( horizX+13, y, horizX+17, y );
 810         if (child->HasPlus())
 811           dc.DrawLine( horizX+15, y-2, horizX+15, y+2 );
 812       };
 813
 814       if (child->HasHilight())
 815       {
 816         dc.SetTextForeground( wxSystemSettings::GetSystemColour( wxSYS_COLOUR_HIGHLIGHTTEXT ) );
 817 #if 0 // VZ: this code leaves horizontal stripes when item is unselected
 818         dc.SetBrush( *m_hilightBrush );
 819         if (m_hasFocus)
 820           dc.SetPen( wxBLACK_PEN );
 821         else
 822           dc.SetPen( wxTRANSPARENT_PEN );
 823         long tw, th;
 824         dc.GetTextExtent( child->m_text, &tw, &th );
 825         dc.DrawRectangle( child->m_x-2, child->m_y-2, tw+4, th+4 );
 826 #else
 827         int modeOld = dc.GetBackgroundMode();
 828         dc.SetTextBackground( *wxBLACK );
 829         dc.SetBackgroundMode(wxSOLID);
 830 #endif // 0
 831
 832         dc.DrawText( child->m_text, child->m_x, child->m_y );
 833
 834 #if 0 // VZ: same as above
 835         dc.SetPen( *wxBLACK_PEN );
 836 #else
 837         dc.SetBackgroundMode(modeOld);
 838         dc.SetTextBackground( *wxWHITE );
 839         dc.SetBrush( *wxWHITE_BRUSH );
 840 #endif
 841         dc.SetTextForeground( *wxBLACK );
 842       }
 843       else
 844         dc.DrawText( child->m_text, child->m_x, child->m_y );
 845     };
 846
 847     y += m_lineHeight;
 848     if ( child->IsExpanded() && child->NumberOfVisibleChildren() > 0)
 849       PaintLevel( child, dc, level+1, y );
 850     node = node->Next();
 851   };
 852 };
 853
 854 void wxTreeCtrl::OnPaint( const wxPaintEvent &WXUNUSED(event) )
 855 {
 856   if (!m_anchor) return;
 857
 858   if (!m_dc)
 859   {
 860     m_dc = new wxPaintDC(this);
 861     PrepareDC( *m_dc );
 862   };
 863
 864   m_dc->SetFont( wxSystemSettings::GetSystemFont( wxSYS_SYSTEM_FONT ) );
 865
 866   m_dc->SetPen( m_dottedPen );
 867   m_lineHeight = (int)(m_dc->GetCharHeight() + 4);
 868
 869   int y = m_lineHeight / 2 + 2;
 870   PaintLevel( m_anchor, *m_dc, 0, y );
 871 };
 872
 873 void wxTreeCtrl::OnSetFocus( const wxFocusEvent &WXUNUSED(event) )
 874 {
 875   m_hasFocus = TRUE;
 876   if (m_current) RefreshLine( m_current );
 877 };
 878
 879 void wxTreeCtrl::OnKillFocus( const wxFocusEvent &WXUNUSED(event) )
 880 {
 881   m_hasFocus = FALSE;
 882   if (m_current) RefreshLine( m_current );
 883 };
 884
 885 void wxTreeCtrl::OnChar( wxKeyEvent &event )
 886 {
 887   event.Skip();
 888 };
 889
 890 void wxTreeCtrl::OnMouse( const wxMouseEvent &event )
 891 {
 892   if (!event.LeftDown() &&
 893       !event.LeftDClick()) return;
 894
 895   wxClientDC dc(this);
 896   PrepareDC(dc);
 897   long x = dc.DeviceToLogicalX( (long)event.GetX() );
 898   long y = dc.DeviceToLogicalY( (long)event.GetY() );
 899
 900   int flag = 0;
 901   long id = HitTest( wxPoint(x,y), flag );
 902   if (id == -1)
 903     return;
 904   wxGenericTreeItem *item = FindItem( id );
 905
 906   if (!item) return;
 907   if ((flag != wxTREE_HITTEST_ONITEMBUTTON) &&
 908       (flag != wxTREE_HITTEST_ONITEMLABEL)) return;
 909
 910   if (m_current != item)
 911   {
 912     if (m_current)
 913     {
 914       m_current->SetHilight( FALSE );
 915       RefreshLine( m_current );
 916     };
 917     m_current = item;
 918     m_current->SetHilight( TRUE );
 919     RefreshLine( m_current );
 920     m_current->SendSelected( this );
 921   };
 922
 923   if (event.LeftDClick())
 924     m_current->SendKeyDown( this );
 925
 926   if (flag == wxTREE_HITTEST_ONITEMBUTTON)
 927   {
 928     ExpandItem( item->m_itemId, wxTREE_EXPAND_TOGGLE );
 929     return;
 930   };
 931 };
 932
 933 void wxTreeCtrl::CalculateLevel( wxGenericTreeItem *item, wxPaintDC &dc, int level, int &y )
 934 {
 935   int horizX = level*m_indent+10;
 936   wxNode *node = item->m_children.First();
 937   while (node)
 938   {
 939     wxGenericTreeItem *child = (wxGenericTreeItem *)node->Data();
 940     dc.SetPen( m_dottedPen );
 941
 942     int startX = horizX,
 943         endX = horizX + 10;
 944
 945     if (!node->Previous() && (level == 0))
 946       startX -= 10;
 947     if (!child->HasChildren())
 948       endX += 20;
 949
 950     child->m_x = horizX+33;
 951     child->m_y = y-m_lineHeight/3-2;
 952     child->m_height = m_lineHeight;
 953
 954     y += m_lineHeight;
 955     if ( child->IsExpanded() && child->NumberOfVisibleChildren() > 0 )
 956       CalculateLevel( child, dc, level+1, y );
 957
 958     node = node->Next();
 959   };
 960 };
 961
 962 void wxTreeCtrl::CalculatePositions()
 963 {
 964   if (!m_anchor)
 965     return;
 966
 967   wxClientDC dc(this);
 968   PrepareDC( dc );
 969
 970   dc.SetFont( wxSystemSettings::GetSystemFont( wxSYS_SYSTEM_FONT ) );
 971
 972   dc.SetPen( m_dottedPen );
 973   m_lineHeight = (int)(dc.GetCharHeight() + 4);
 974
 975   int y = m_lineHeight / 2 + 2;
 976   CalculateLevel( m_anchor, dc, 0, y );
 977 };
 978
 979 wxGenericTreeItem *wxTreeCtrl::FindItem( long itemId ) const
 980 {
 981   if (!m_anchor) return NULL;
 982   return m_anchor->FindItem( itemId );
 983 };
 984
 985 void wxTreeCtrl::RefreshLine( wxGenericTreeItem *item )
 986 {
 987   if (!item) return;
 988   wxClientDC dc(this);
 989   PrepareDC( dc );
 990   wxRect rect;
 991   rect.x = dc.LogicalToDeviceX( item->m_x-2 );
 992   rect.y = dc.LogicalToDeviceY( item->m_y-2 );
 993   rect.width = 1000;
 994   rect.height = dc.GetCharHeight()+4;
 995   Refresh( TRUE, &rect );
 996 };
 997
 998
 999