src/generic/treectrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        treectrl.cpp
   3 // Purpose:     generic tree control implementation
   4 // Author:      Robert Roebling
   5 // Created:     01/02/97
   6 // Modified:    22/10/98 - almost total rewrite, simpler interface (VZ)
   7 // Id:          $Id$
   8 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // =============================================================================
  13 // declarations
  14 // =============================================================================
  15
  16 // -----------------------------------------------------------------------------
  17 // headers
  18 // -----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21   #pragma implementation "treectrl.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28 #pragma hdrstop
  29 #endif
  30
  31 #include "wx/treectrl.h"
  32 #include "wx/generic/imaglist.h"
  33 #include "wx/settings.h"
  34 #include "wx/log.h"
  35 #include "wx/intl.h"
  36 #include "wx/dynarray.h"
  37 #include "wx/arrimpl.cpp"
  38 #include "wx/dcclient.h"
  39 #include "wx/msgdlg.h"
  40
  41 // -----------------------------------------------------------------------------
  42 // array types
  43 // -----------------------------------------------------------------------------
  44
  45 class WXDLLEXPORT wxGenericTreeItem;
  46
  47 WX_DEFINE_ARRAY(wxGenericTreeItem *, wxArrayGenericTreeItems);
  48 WX_DEFINE_OBJARRAY(wxArrayTreeItemIds);
  49
  50 // -----------------------------------------------------------------------------
  51 // private classes
  52 // -----------------------------------------------------------------------------
  53
  54 // a tree item
  55 class WXDLLEXPORT wxGenericTreeItem
  56 {
  57 public:
  58   // ctors & dtor
  59   wxGenericTreeItem() { m_data = NULL; }
  60   wxGenericTreeItem( wxGenericTreeItem *parent,
  61                      const wxString& text,
  62                      wxDC& dc,
  63                      int image, int selImage,
  64                      wxTreeItemData *data );
  65
  66   ~wxGenericTreeItem();
  67
  68   // trivial accessors
  69   wxArrayGenericTreeItems& GetChildren() { return m_children; }
  70
  71   const wxString& GetText() const { return m_text; }
  72   int GetImage() const { return m_image; }
  73   int GetSelectedImage() const { return m_selImage; }
  74   wxTreeItemData *GetData() const { return m_data; }
  75
  76   void SetText( const wxString &text );
  77   void SetImage(int image) { m_image = image; }
  78   void SetSelectedImage(int image) { m_selImage = image; }
  79   void SetData(wxTreeItemData *data) { m_data = data; }
  80
  81   void SetHasPlus(bool has = TRUE) { m_hasPlus = has; }
  82
  83   void SetBold(bool bold) { m_isBold = bold; }
  84
  85   int GetX() const { return m_x; }
  86   int GetY() const { return m_y; }
  87
  88   void SetX(int x) { m_x = x; }
  89   void SetY(int y) { m_y = y; }
  90
  91   int  GetHeight() const { return m_height; }
  92   int  GetWidth()  const { return m_width; }
  93
  94   void SetHeight(int h) { m_height = h; }
  95   void SetWidth(int w) { m_width = w; }
  96
  97
  98   wxGenericTreeItem *GetParent() const { return m_parent; }
  99
 100   // operations
 101     // deletes all children notifying the treectrl about it if !NULL pointer
 102     // given
 103   void DeleteChildren(wxTreeCtrl *tree = NULL);
 104     // FIXME don't know what is it for
 105   void Reset();
 106
 107   // get count of all children (and grand children if 'recursively')
 108   size_t GetChildrenCount(bool recursively = TRUE) const;
 109
 110   void Insert(wxGenericTreeItem *child, size_t index)
 111     { m_children.Insert(child, index); }
 112
 113   void SetCross( int x, int y );
 114   void GetSize( int &x, int &y, const wxTreeCtrl* );
 115
 116   // return the item at given position (or NULL if no item), onButton is TRUE
 117   // if the point belongs to the item's button, otherwise it lies on the
 118   // button's label
 119   wxGenericTreeItem *HitTest( const wxPoint& point, const wxTreeCtrl *, int &flags);
 120
 121   void Expand() { m_isCollapsed = FALSE; }
 122   void Collapse() { m_isCollapsed = TRUE; }
 123
 124   void SetHilight( bool set = TRUE ) { m_hasHilight = set; }
 125
 126   // status inquiries
 127   bool HasChildren() const { return !m_children.IsEmpty(); }
 128   bool HasHilight()  const { return m_hasHilight; }
 129   bool IsExpanded()  const { return !m_isCollapsed; }
 130   bool HasPlus()     const { return m_hasPlus || HasChildren(); }
 131   bool IsBold()      const { return m_isBold; }
 132
 133 private:
 134   wxString            m_text;
 135
 136   int                 m_image,
 137                       m_selImage;
 138
 139   wxTreeItemData     *m_data;
 140
 141   // use bitfields to save size
 142   int                 m_isCollapsed :1;
 143   int                 m_hasHilight  :1; // same as focused
 144   int                 m_hasPlus     :1; // used for item which doesn't have
 145                                         // children but still has a [+] button
 146   int                 m_isBold      :1; // render the label in bold font
 147
 148   int                 m_x, m_y;
 149   long                m_height, m_width;
 150   int                 m_xCross, m_yCross;
 151   int                 m_level;
 152   wxArrayGenericTreeItems m_children;
 153   wxGenericTreeItem  *m_parent;
 154 };
 155
 156 // =============================================================================
 157 // implementation
 158 // =============================================================================
 159
 160
 161 // -----------------------------------------------------------------------------
 162 // wxTreeRenameTimer (internal)
 163 // -----------------------------------------------------------------------------
 164
 165 wxTreeRenameTimer::wxTreeRenameTimer( wxTreeCtrl *owner )
 166 {
 167     m_owner = owner;
 168 }
 169
 170 void wxTreeRenameTimer::Notify()
 171 {
 172     m_owner->OnRenameTimer();
 173 }
 174
 175 //-----------------------------------------------------------------------------
 176 // wxTreeTextCtrl (internal)
 177 //-----------------------------------------------------------------------------
 178
 179 IMPLEMENT_DYNAMIC_CLASS(wxTreeTextCtrl,wxTextCtrl);
 180
 181 BEGIN_EVENT_TABLE(wxTreeTextCtrl,wxTextCtrl)
 182     EVT_CHAR           (wxTreeTextCtrl::OnChar)
 183     EVT_KILL_FOCUS     (wxTreeTextCtrl::OnKillFocus)
 184 END_EVENT_TABLE()
 185
 186 wxTreeTextCtrl::wxTreeTextCtrl( wxWindow *parent, const wxWindowID id,
 187     bool *accept, wxString *res, wxTreeCtrl *owner,
 188     const wxString &value, const wxPoint &pos, const wxSize &size,
 189     int style, const wxValidator& validator, const wxString &name ) :
 190   wxTextCtrl( parent, id, value, pos, size, style, validator, name )
 191 {
 192     m_res = res;
 193     m_accept = accept;
 194     m_owner = owner;
 195     (*m_accept) = FALSE;
 196     (*m_res) = "";
 197     m_startValue = value;
 198 }
 199
 200 void wxTreeTextCtrl::OnChar( wxKeyEvent &event )
 201 {
 202     if (event.m_keyCode == WXK_RETURN)
 203     {
 204         (*m_accept) = TRUE;
 205         (*m_res) = GetValue();
 206         m_owner->SetFocus();
 207         return;
 208     }
 209     if (event.m_keyCode == WXK_ESCAPE)
 210     {
 211         (*m_accept) = FALSE;
 212         (*m_res) = "";
 213         m_owner->SetFocus();
 214         return;
 215     }
 216     event.Skip();
 217 }
 218
 219 void wxTreeTextCtrl::OnKillFocus( wxFocusEvent &WXUNUSED(event) )
 220 {
 221     if (wxPendingDelete.Member(this)) return;
 222
 223     wxPendingDelete.Append(this);
 224
 225     if ((*m_accept) && ((*m_res) != m_startValue))
 226         m_owner->OnRenameAccept();
 227 }
 228
 229 #define PIXELS_PER_UNIT 10
 230 // -----------------------------------------------------------------------------
 231 // wxTreeEvent
 232 // -----------------------------------------------------------------------------
 233
 234 IMPLEMENT_DYNAMIC_CLASS(wxTreeEvent, wxNotifyEvent)
 235
 236 wxTreeEvent::wxTreeEvent( wxEventType commandType, int id )
 237            : wxNotifyEvent( commandType, id )
 238 {
 239   m_code = 0;
 240   m_itemOld = (wxGenericTreeItem *)NULL;
 241 }
 242
 243 // -----------------------------------------------------------------------------
 244 // wxGenericTreeItem
 245 // -----------------------------------------------------------------------------
 246
 247 wxGenericTreeItem::wxGenericTreeItem(wxGenericTreeItem *parent,
 248                                      const wxString& text,
 249                                      wxDC& dc,
 250                                      int image, int selImage,
 251                                      wxTreeItemData *data)
 252                  : m_text(text)
 253 {
 254   m_image = image;
 255   m_selImage = selImage;
 256   m_data = data;
 257   m_x = m_y = 0;
 258   m_xCross = m_yCross = 0;
 259
 260   m_level = 0;
 261
 262   m_isCollapsed = TRUE;
 263   m_hasHilight = FALSE;
 264   m_hasPlus = FALSE;
 265   m_isBold = FALSE;
 266
 267   m_parent = parent;
 268
 269   dc.GetTextExtent( m_text, &m_width, &m_height );
 270   // TODO : Add the width of the image
 271   // PB   : We don't know which image is shown (image, selImage)
 272   //        We don't even know imageList from the treectrl this item belongs to !!!
 273   // At this point m_width doesn't mean much, this can be remove !
 274 }
 275
 276 wxGenericTreeItem::~wxGenericTreeItem()
 277 {
 278   delete m_data;
 279
 280   wxASSERT_MSG( m_children.IsEmpty(),
 281                 _T("please call DeleteChildren() before deleting the item") );
 282 }
 283
 284 void wxGenericTreeItem::DeleteChildren(wxTreeCtrl *tree)
 285 {
 286   size_t count = m_children.Count();
 287   for ( size_t n = 0; n < count; n++ )
 288   {
 289     wxGenericTreeItem *child = m_children[n];
 290     if ( tree )
 291     {
 292       tree->SendDeleteEvent(child);
 293     }
 294
 295     child->DeleteChildren(tree);
 296     delete child;
 297   }
 298
 299   m_children.Empty();
 300 }
 301
 302 void wxGenericTreeItem::SetText( const wxString &text )
 303 {
 304   m_text = text;
 305 }
 306
 307 void wxGenericTreeItem::Reset()
 308 {
 309   m_text.Empty();
 310   m_image =
 311   m_selImage = -1;
 312   m_data = NULL;
 313   m_x = m_y =
 314   m_height = m_width = 0;
 315   m_xCross =
 316   m_yCross = 0;
 317
 318   m_level = 0;
 319
 320   DeleteChildren();
 321   m_isCollapsed = TRUE;
 322
 323   m_parent = (wxGenericTreeItem *)NULL;
 324 }
 325
 326 size_t wxGenericTreeItem::GetChildrenCount(bool recursively) const
 327 {
 328   size_t count = m_children.Count();
 329   if ( !recursively )
 330     return count;
 331
 332   size_t total = count;
 333   for ( size_t n = 0; n < count; ++n )
 334   {
 335     total += m_children[n]->GetChildrenCount();
 336   }
 337
 338   return total;
 339 }
 340
 341 void wxGenericTreeItem::SetCross( int x, int y )
 342 {
 343   m_xCross = x;
 344   m_yCross = y;
 345 }
 346
 347 void wxGenericTreeItem::GetSize( int &x, int &y, const wxTreeCtrl *theTree )
 348 {
 349   int bottomY=m_y+theTree->GetLineHeight(this);
 350   if ( y < bottomY ) y = bottomY;
 351   int width = m_x +  m_width;
 352   if ( x < width ) x = width;
 353
 354   if (IsExpanded())
 355   {
 356     size_t count = m_children.Count();
 357     for ( size_t n = 0; n < count; ++n )
 358     {
 359       m_children[n]->GetSize( x, y, theTree );
 360     }
 361   }
 362 }
 363
 364 wxGenericTreeItem *wxGenericTreeItem::HitTest( const wxPoint& point,
 365                                                const wxTreeCtrl *theTree,
 366                                                int &flags)
 367 {
 368   if ((point.y > m_y) && (point.y < m_y + theTree->GetLineHeight(this)))
 369   {
 370     if (point.y<m_y+theTree->GetLineHeight(this)/2) flags|=wxTREE_HITTEST_ONITEMUPPERPART;
 371     else flags|=wxTREE_HITTEST_ONITEMLOWERPART;
 372
 373     // FIXME why +5?
 374     //  Because that is the size of the plus sign, RR
 375     if ((point.x > m_xCross-5) && (point.x < m_xCross+5) &&
 376         (point.y > m_yCross-5) && (point.y < m_yCross+5) &&
 377         (IsExpanded() || HasPlus()))
 378     {
 379       flags|=wxTREE_HITTEST_ONITEMBUTTON;
 380       return this;
 381     }
 382
 383     if ((point.x >= m_x) && (point.x <= m_x+m_width))
 384     {
 385       int image_w = -1;
 386       int image_h;
 387
 388       // assuming every image (normal and selected ) has the same size !
 389       if ((m_image!=-1) && theTree->m_imageListNormal)
 390           theTree->m_imageListNormal->GetSize(m_image, image_w, image_h);
 391
 392       if ((image_w != -1) && (point.x <= m_x + image_w + 1))
 393         flags|=wxTREE_HITTEST_ONITEMICON;
 394       else
 395         flags|=wxTREE_HITTEST_ONITEMLABEL;
 396
 397       return this;
 398     }
 399
 400     if (point.x < m_x)         flags|=wxTREE_HITTEST_ONITEMIDENT;
 401     if (point.x > m_x+m_width) flags|=wxTREE_HITTEST_ONITEMRIGHT;
 402
 403     return this;
 404   }
 405   else
 406   {
 407     if (!m_isCollapsed)
 408     {
 409       size_t count = m_children.Count();
 410       for ( size_t n = 0; n < count; n++ )
 411       {
 412         wxGenericTreeItem *res = m_children[n]->HitTest( point, theTree, flags );
 413         if ( res != NULL )
 414           return res;
 415       }
 416     }
 417   }
 418
 419   flags|=wxTREE_HITTEST_NOWHERE;
 420   return NULL;
 421 }
 422
 423 // -----------------------------------------------------------------------------
 424 // wxTreeCtrl implementation
 425 // -----------------------------------------------------------------------------
 426
 427 IMPLEMENT_DYNAMIC_CLASS(wxTreeCtrl, wxScrolledWindow)
 428
 429 BEGIN_EVENT_TABLE(wxTreeCtrl,wxScrolledWindow)
 430   EVT_PAINT          (wxTreeCtrl::OnPaint)
 431   EVT_MOUSE_EVENTS   (wxTreeCtrl::OnMouse)
 432   EVT_CHAR           (wxTreeCtrl::OnChar)
 433   EVT_SET_FOCUS      (wxTreeCtrl::OnSetFocus)
 434   EVT_KILL_FOCUS     (wxTreeCtrl::OnKillFocus)
 435   EVT_IDLE           (wxTreeCtrl::OnIdle)
 436 END_EVENT_TABLE()
 437
 438 // -----------------------------------------------------------------------------
 439 // construction/destruction
 440 // -----------------------------------------------------------------------------
 441
 442 void wxTreeCtrl::Init()
 443 {
 444   m_current =
 445   m_key_current =
 446   m_anchor = (wxGenericTreeItem *) NULL;
 447   m_hasFocus = FALSE;
 448   m_dirty = FALSE;
 449
 450   m_xScroll = 0;
 451   m_yScroll = 0;
 452   m_lineHeight = 10;
 453   m_indent = 15;
 454   m_spacing = 18;
 455
 456   m_hilightBrush = new wxBrush
 457     (
 458       wxSystemSettings::GetSystemColour(wxSYS_COLOUR_HIGHLIGHT),
 459       wxSOLID
 460     );
 461
 462   m_imageListNormal =
 463   m_imageListState = (wxImageList *) NULL;
 464
 465   m_dragCount = 0;
 466
 467   m_renameTimer = new wxTreeRenameTimer( this );
 468 }
 469
 470 bool wxTreeCtrl::Create(wxWindow *parent, wxWindowID id,
 471                         const wxPoint& pos, const wxSize& size,
 472                         long style,
 473             const wxValidator &validator,
 474             const wxString& name )
 475 {
 476   Init();
 477
 478   wxScrolledWindow::Create( parent, id, pos, size, style|wxHSCROLL|wxVSCROLL, name );
 479
 480 #if wxUSE_VALIDATORS
 481   SetValidator( validator );
 482 #endif
 483
 484   SetBackgroundColour( *wxWHITE );
 485 //  m_dottedPen = wxPen( "grey", 0, wxDOT );
 486   m_dottedPen = wxPen( "grey", 0, 0 );
 487
 488   return TRUE;
 489 }
 490
 491 wxTreeCtrl::~wxTreeCtrl()
 492 {
 493   wxDELETE( m_hilightBrush );
 494
 495   DeleteAllItems();
 496
 497   delete m_renameTimer;
 498 }
 499
 500 // -----------------------------------------------------------------------------
 501 // accessors
 502 // -----------------------------------------------------------------------------
 503
 504 size_t wxTreeCtrl::GetCount() const
 505 {
 506   return m_anchor == NULL ? 0u : m_anchor->GetChildrenCount();
 507 }
 508
 509 void wxTreeCtrl::SetIndent(unsigned int indent)
 510 {
 511   m_indent = indent;
 512   m_dirty = TRUE;
 513   Refresh();
 514 }
 515
 516 void wxTreeCtrl::SetSpacing(unsigned int spacing)
 517 {
 518   m_spacing = spacing;
 519   m_dirty = TRUE;
 520   Refresh();
 521 }
 522
 523 size_t wxTreeCtrl::GetChildrenCount(const wxTreeItemId& item, bool recursively)
 524 {
 525   wxCHECK_MSG( item.IsOk(), 0u, _T("invalid tree item") );
 526
 527   return item.m_pItem->GetChildrenCount(recursively);
 528 }
 529
 530 // -----------------------------------------------------------------------------
 531 // functions to work with tree items
 532 // -----------------------------------------------------------------------------
 533
 534 wxString wxTreeCtrl::GetItemText(const wxTreeItemId& item) const
 535 {
 536   wxCHECK_MSG( item.IsOk(), _T(""), _T("invalid tree item") );
 537
 538   return item.m_pItem->GetText();
 539 }
 540
 541 int wxTreeCtrl::GetItemImage(const wxTreeItemId& item) const
 542 {
 543   wxCHECK_MSG( item.IsOk(), -1, _T("invalid tree item") );
 544
 545   return item.m_pItem->GetImage();
 546 }
 547
 548 int wxTreeCtrl::GetItemSelectedImage(const wxTreeItemId& item) const
 549 {
 550   wxCHECK_MSG( item.IsOk(), -1, _T("invalid tree item") );
 551
 552   return item.m_pItem->GetSelectedImage();
 553 }
 554
 555 wxTreeItemData *wxTreeCtrl::GetItemData(const wxTreeItemId& item) const
 556 {
 557   wxCHECK_MSG( item.IsOk(), NULL, _T("invalid tree item") );
 558
 559   return item.m_pItem->GetData();
 560 }
 561
 562 void wxTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text)
 563 {
 564   wxCHECK_RET( item.IsOk(), _T("invalid tree item") );
 565
 566   wxClientDC dc(this);
 567   wxGenericTreeItem *pItem = item.m_pItem;
 568   pItem->SetText(text);
 569   CalculateSize(pItem, dc);
 570   RefreshLine(pItem);
 571 }
 572
 573 void wxTreeCtrl::SetItemImage(const wxTreeItemId& item, int image)
 574 {
 575   wxCHECK_RET( item.IsOk(), _T("invalid tree item") );
 576
 577   wxClientDC dc(this);
 578   wxGenericTreeItem *pItem = item.m_pItem;
 579   pItem->SetImage(image);
 580   CalculateSize(pItem, dc);
 581   RefreshLine(pItem);
 582 }
 583
 584 void wxTreeCtrl::SetItemSelectedImage(const wxTreeItemId& item, int image)
 585 {
 586   wxCHECK_RET( item.IsOk(), _T("invalid tree item") );
 587
 588   wxClientDC dc(this);
 589   wxGenericTreeItem *pItem = item.m_pItem;
 590   pItem->SetSelectedImage(image);
 591   CalculateSize(pItem, dc);
 592   RefreshLine(pItem);
 593 }
 594
 595 void wxTreeCtrl::SetItemData(const wxTreeItemId& item, wxTreeItemData *data)
 596 {
 597   wxCHECK_RET( item.IsOk(), _T("invalid tree item") );
 598
 599   item.m_pItem->SetData(data);
 600 }
 601
 602 void wxTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has)
 603 {
 604   wxCHECK_RET( item.IsOk(), _T("invalid tree item") );
 605
 606   wxGenericTreeItem *pItem = item.m_pItem;
 607   pItem->SetHasPlus(has);
 608   RefreshLine(pItem);
 609 }
 610
 611 void wxTreeCtrl::SetItemBold(const wxTreeItemId& item, bool bold)
 612 {
 613   wxCHECK_RET( item.IsOk(), _T("invalid tree item") );
 614
 615   // avoid redrawing the tree if no real change
 616   wxGenericTreeItem *pItem = item.m_pItem;
 617   if ( pItem->IsBold() != bold )
 618   {
 619     pItem->SetBold(bold);
 620     RefreshLine(pItem);
 621   }
 622 }
 623
 624 // -----------------------------------------------------------------------------
 625 // item status inquiries
 626 // -----------------------------------------------------------------------------
 627
 628 bool wxTreeCtrl::IsVisible(const wxTreeItemId& WXUNUSED(item)) const
 629 {
 630   wxFAIL_MSG(_T("not implemented"));
 631
 632   return TRUE;
 633 }
 634
 635 bool wxTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const
 636 {
 637   wxCHECK_MSG( item.IsOk(), FALSE, _T("invalid tree item") );
 638
 639   return !item.m_pItem->GetChildren().IsEmpty();
 640 }
 641
 642 bool wxTreeCtrl::IsExpanded(const wxTreeItemId& item) const
 643 {
 644   wxCHECK_MSG( item.IsOk(), FALSE, _T("invalid tree item") );
 645
 646   return item.m_pItem->IsExpanded();
 647 }
 648
 649 bool wxTreeCtrl::IsSelected(const wxTreeItemId& item) const
 650 {
 651   wxCHECK_MSG( item.IsOk(), FALSE, _T("invalid tree item") );
 652
 653   return item.m_pItem->HasHilight();
 654 }
 655
 656 bool wxTreeCtrl::IsBold(const wxTreeItemId& item) const
 657 {
 658   wxCHECK_MSG( item.IsOk(), FALSE, _T("invalid tree item") );
 659
 660   return item.m_pItem->IsBold();
 661 }
 662
 663 // -----------------------------------------------------------------------------
 664 // navigation
 665 // -----------------------------------------------------------------------------
 666
 667 wxTreeItemId wxTreeCtrl::GetParent(const wxTreeItemId& item) const
 668 {
 669   wxCHECK_MSG( item.IsOk(), wxTreeItemId(), _T("invalid tree item") );
 670
 671   return item.m_pItem->GetParent();
 672 }
 673
 674 wxTreeItemId wxTreeCtrl::GetFirstChild(const wxTreeItemId& item, long& cookie) const
 675 {
 676   wxCHECK_MSG( item.IsOk(), wxTreeItemId(), _T("invalid tree item") );
 677
 678   cookie = 0;
 679   return GetNextChild(item, cookie);
 680 }
 681
 682 wxTreeItemId wxTreeCtrl::GetNextChild(const wxTreeItemId& item, long& cookie) const
 683 {
 684   wxCHECK_MSG( item.IsOk(), wxTreeItemId(), _T("invalid tree item") );
 685
 686   wxArrayGenericTreeItems& children = item.m_pItem->GetChildren();
 687   if ( (size_t)cookie < children.Count() )
 688   {
 689     return children.Item(cookie++);
 690   }
 691   else
 692   {
 693     // there are no more of them
 694     return wxTreeItemId();
 695   }
 696 }
 697
 698 wxTreeItemId wxTreeCtrl::GetLastChild(const wxTreeItemId& item) const
 699 {
 700   wxCHECK_MSG( item.IsOk(), wxTreeItemId(), _T("invalid tree item") );
 701
 702   wxArrayGenericTreeItems& children = item.m_pItem->GetChildren();
 703   return (children.IsEmpty() ? wxTreeItemId() : wxTreeItemId(children.Last()));
 704 }
 705
 706 wxTreeItemId wxTreeCtrl::GetNextSibling(const wxTreeItemId& item) const
 707 {
 708   wxCHECK_MSG( item.IsOk(), wxTreeItemId(), _T("invalid tree item") );
 709
 710   wxGenericTreeItem *i = item.m_pItem;
 711   wxGenericTreeItem *parent = i->GetParent();
 712   if ( parent == NULL )
 713   {
 714     // root item doesn't have any siblings
 715     return wxTreeItemId();
 716   }
 717
 718   wxArrayGenericTreeItems& siblings = parent->GetChildren();
 719   int index = siblings.Index(i);
 720   wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
 721
 722   size_t n = (size_t)(index + 1);
 723   return n == siblings.Count() ? wxTreeItemId() : wxTreeItemId(siblings[n]);
 724 }
 725
 726 wxTreeItemId wxTreeCtrl::GetPrevSibling(const wxTreeItemId& item) const
 727 {
 728   wxCHECK_MSG( item.IsOk(), wxTreeItemId(), _T("invalid tree item") );
 729
 730   wxGenericTreeItem *i = item.m_pItem;
 731   wxGenericTreeItem *parent = i->GetParent();
 732   if ( parent == NULL )
 733   {
 734     // root item doesn't have any siblings
 735     return wxTreeItemId();
 736   }
 737
 738   wxArrayGenericTreeItems& siblings = parent->GetChildren();
 739   int index = siblings.Index(i);
 740   wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
 741
 742   return index == 0 ? wxTreeItemId()
 743                     : wxTreeItemId(siblings[(size_t)(index - 1)]);
 744 }
 745
 746 wxTreeItemId wxTreeCtrl::GetFirstVisibleItem() const
 747 {
 748   wxFAIL_MSG(_T("not implemented"));
 749
 750   return wxTreeItemId();
 751 }
 752
 753 wxTreeItemId wxTreeCtrl::GetNextVisible(const wxTreeItemId& item) const
 754 {
 755   wxCHECK_MSG( item.IsOk(), wxTreeItemId(), _T("invalid tree item") );
 756
 757   wxFAIL_MSG(_T("not implemented"));
 758
 759   return wxTreeItemId();
 760 }
 761
 762 wxTreeItemId wxTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const
 763 {
 764   wxCHECK_MSG( item.IsOk(), wxTreeItemId(), _T("invalid tree item") );
 765
 766   wxFAIL_MSG(_T("not implemented"));
 767
 768   return wxTreeItemId();
 769 }
 770
 771 // -----------------------------------------------------------------------------
 772 // operations
 773 // -----------------------------------------------------------------------------
 774
 775 wxTreeItemId wxTreeCtrl::DoInsertItem(const wxTreeItemId& parentId,
 776                                       size_t previous,
 777                                       const wxString& text,
 778                                       int image, int selImage,
 779                                       wxTreeItemData *data)
 780 {
 781   wxGenericTreeItem *parent = parentId.m_pItem;
 782   if ( !parent )
 783   {
 784     // should we give a warning here?
 785     return AddRoot(text, image, selImage, data);
 786   }
 787
 788   wxClientDC dc(this);
 789   wxGenericTreeItem *item = new wxGenericTreeItem(parent,
 790                                                   text, dc,
 791                                                   image, selImage,
 792                                                   data);
 793
 794   if ( data != NULL )
 795   {
 796     data->m_pItem = item;
 797   }
 798
 799   parent->Insert( item, previous );
 800
 801   m_dirty = TRUE;
 802
 803   return item;
 804 }
 805
 806 wxTreeItemId wxTreeCtrl::AddRoot(const wxString& text,
 807                                  int image, int selImage,
 808                                  wxTreeItemData *data)
 809 {
 810   wxCHECK_MSG( !m_anchor, wxTreeItemId(), _T("tree can have only one root") );
 811
 812   wxClientDC dc(this);
 813   m_anchor = new wxGenericTreeItem((wxGenericTreeItem *)NULL, text, dc,
 814                                    image, selImage, data);
 815   if ( data != NULL )
 816   {
 817     data->m_pItem = m_anchor;
 818   }
 819
 820   Refresh();
 821   AdjustMyScrollbars();
 822
 823   return m_anchor;
 824 }
 825
 826 wxTreeItemId wxTreeCtrl::PrependItem(const wxTreeItemId& parent,
 827                                      const wxString& text,
 828                                      int image, int selImage,
 829                                      wxTreeItemData *data)
 830 {
 831   return DoInsertItem(parent, 0u, text, image, selImage, data);
 832 }
 833
 834 wxTreeItemId wxTreeCtrl::InsertItem(const wxTreeItemId& parentId,
 835                                     const wxTreeItemId& idPrevious,
 836                                     const wxString& text,
 837                                     int image, int selImage,
 838                                     wxTreeItemData *data)
 839 {
 840   wxGenericTreeItem *parent = parentId.m_pItem;
 841   if ( !parent )
 842   {
 843     // should we give a warning here?
 844     return AddRoot(text, image, selImage, data);
 845   }
 846
 847   int index = parent->GetChildren().Index(idPrevious.m_pItem);
 848   wxASSERT_MSG( index != wxNOT_FOUND,
 849                 _T("previous item in wxTreeCtrl::InsertItem() is not a sibling") );
 850   return DoInsertItem(parentId, (size_t)++index, text, image, selImage, data);
 851 }
 852
 853 wxTreeItemId wxTreeCtrl::AppendItem(const wxTreeItemId& parentId,
 854                                     const wxString& text,
 855                                     int image, int selImage,
 856                                     wxTreeItemData *data)
 857 {
 858   wxGenericTreeItem *parent = parentId.m_pItem;
 859   if ( !parent )
 860   {
 861     // should we give a warning here?
 862     return AddRoot(text, image, selImage, data);
 863   }
 864
 865   return DoInsertItem(parent, parent->GetChildren().Count(), text,
 866                       image, selImage, data);
 867 }
 868
 869 void wxTreeCtrl::SendDeleteEvent(wxGenericTreeItem *item)
 870 {
 871   wxTreeEvent event( wxEVT_COMMAND_TREE_DELETE_ITEM, GetId() );
 872   event.m_item = item;
 873   event.SetEventObject( this );
 874   ProcessEvent( event );
 875 }
 876
 877 void wxTreeCtrl::DeleteChildren(const wxTreeItemId& itemId)
 878 {
 879     wxGenericTreeItem *item = itemId.m_pItem;
 880     item->DeleteChildren(this);
 881
 882     m_dirty = TRUE;
 883 }
 884
 885 void wxTreeCtrl::Delete(const wxTreeItemId& itemId)
 886 {
 887   wxGenericTreeItem *item = itemId.m_pItem;
 888   wxGenericTreeItem *parent = item->GetParent();
 889
 890   if ( parent )
 891   {
 892     parent->GetChildren().Remove(item);
 893   }
 894
 895   item->DeleteChildren(this);
 896   SendDeleteEvent(item);
 897   delete item;
 898
 899   m_dirty = TRUE;
 900 }
 901
 902 void wxTreeCtrl::DeleteAllItems()
 903 {
 904   if ( m_anchor )
 905   {
 906     m_anchor->DeleteChildren(this);
 907     delete m_anchor;
 908
 909     m_anchor = NULL;
 910
 911     m_dirty = TRUE;
 912   }
 913 }
 914
 915 void wxTreeCtrl::Expand(const wxTreeItemId& itemId)
 916 {
 917   wxGenericTreeItem *item = itemId.m_pItem;
 918
 919   if ( !item->HasPlus() )
 920     return;
 921
 922   if ( item->IsExpanded() )
 923     return;
 924
 925   wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_EXPANDING, GetId() );
 926   event.m_item = item;
 927   event.SetEventObject( this );
 928   if ( ProcessEvent( event ) && event.m_code )
 929   {
 930     // cancelled by program
 931     return;
 932   }
 933
 934   item->Expand();
 935   CalculatePositions();
 936
 937   RefreshSubtree(item);
 938
 939   event.SetEventType(wxEVT_COMMAND_TREE_ITEM_EXPANDED);
 940   ProcessEvent( event );
 941 }
 942
 943 void wxTreeCtrl::Collapse(const wxTreeItemId& itemId)
 944 {
 945   wxGenericTreeItem *item = itemId.m_pItem;
 946
 947   if ( !item->IsExpanded() )
 948     return;
 949
 950   wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_COLLAPSING, GetId() );
 951   event.m_item = item;
 952   event.SetEventObject( this );
 953   if ( ProcessEvent( event ) && event.m_code )
 954   {
 955     // cancelled by program
 956     return;
 957   }
 958
 959   item->Collapse();
 960
 961   wxArrayGenericTreeItems& children = item->GetChildren();
 962   size_t count = children.Count();
 963   for ( size_t n = 0; n < count; n++ )
 964   {
 965     Collapse(children[n]);
 966   }
 967
 968   CalculatePositions();
 969
 970   RefreshSubtree(item);
 971
 972   event.SetEventType(wxEVT_COMMAND_TREE_ITEM_COLLAPSED);
 973   ProcessEvent( event );
 974 }
 975
 976 void wxTreeCtrl::CollapseAndReset(const wxTreeItemId& item)
 977 {
 978   Collapse(item);
 979   DeleteChildren(item);
 980 }
 981
 982 void wxTreeCtrl::Toggle(const wxTreeItemId& itemId)
 983 {
 984   wxGenericTreeItem *item = itemId.m_pItem;
 985
 986   if ( item->IsExpanded() )
 987     Collapse(itemId);
 988   else
 989     Expand(itemId);
 990 }
 991
 992 void wxTreeCtrl::Unselect()
 993 {
 994   if ( m_current )
 995   {
 996     m_current->SetHilight( FALSE );
 997     RefreshLine( m_current );
 998   }
 999 }
1000
1001 void wxTreeCtrl::UnselectAllChildren(wxGenericTreeItem *item)
1002 {
1003   item->SetHilight(FALSE);
1004   RefreshLine(item);
1005
1006   if (item->HasChildren())
1007     {
1008       wxArrayGenericTreeItems& children = item->GetChildren();
1009       size_t count = children.Count();
1010       for ( size_t n = 0; n < count; ++n )
1011         UnselectAllChildren(children[n]);
1012     }
1013 }
1014
1015 void wxTreeCtrl::UnselectAll()
1016 {
1017   UnselectAllChildren(GetRootItem().m_pItem);
1018 }
1019
1020 // Recursive function !
1021 // To stop we must have crt_item<last_item
1022 // Algorithm :
1023 // Tag all next children, when no more children,
1024 // Move to parent (not to tag)
1025 // Keep going... if we found last_item, we stop.
1026 bool wxTreeCtrl::TagNextChildren(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select)
1027 {
1028     wxGenericTreeItem *parent = crt_item->GetParent();
1029
1030     if ( parent == NULL ) // This is root item
1031       return TagAllChildrenUntilLast(crt_item, last_item, select);
1032
1033     wxArrayGenericTreeItems& children = parent->GetChildren();
1034     int index = children.Index(crt_item);
1035     wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
1036
1037     size_t count = children.Count();
1038     for (size_t n=(size_t)(index+1); n<count; ++n)
1039       if (TagAllChildrenUntilLast(children[n], last_item, select)) return TRUE;
1040
1041     return TagNextChildren(parent, last_item, select);
1042 }
1043
1044 bool wxTreeCtrl::TagAllChildrenUntilLast(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select)
1045 {
1046   crt_item->SetHilight(select);
1047   RefreshLine(crt_item);
1048
1049   if (crt_item==last_item) return TRUE;
1050
1051   if (crt_item->HasChildren())
1052     {
1053       wxArrayGenericTreeItems& children = crt_item->GetChildren();
1054       size_t count = children.Count();
1055       for ( size_t n = 0; n < count; ++n )
1056         if (TagAllChildrenUntilLast(children[n], last_item, select)) return TRUE;
1057     }
1058
1059   return FALSE;
1060 }
1061
1062 void wxTreeCtrl::SelectItemRange(wxGenericTreeItem *item1, wxGenericTreeItem *item2)
1063 {
1064   // item2 is not necessary after item1
1065   wxGenericTreeItem *first=NULL, *last=NULL;
1066
1067   // choice first' and 'last' between item1 and item2
1068   if (item1->GetY()<item2->GetY())
1069     {
1070       first=item1;
1071       last=item2;
1072     }
1073   else
1074     {
1075       first=item2;
1076       last=item1;
1077     }
1078
1079   bool select=m_current->HasHilight();
1080
1081   if (TagAllChildrenUntilLast(first,last,select)) return;
1082
1083   TagNextChildren(first,last,select);
1084 }
1085
1086 void wxTreeCtrl::SelectItem(const wxTreeItemId& itemId,
1087                             bool unselect_others,
1088                             bool extended_select)
1089 {
1090     wxCHECK_RET( itemId.IsOk(), _T("invalid tree item") );
1091
1092     bool is_single=!(GetWindowStyleFlag() & wxTR_MULTIPLE);
1093
1094     //wxCHECK_RET( ( (!unselect_others) && is_single),
1095     //           _T("this is a single selection tree") );
1096
1097     // to keep going anyhow !!!
1098     if (is_single)
1099     {
1100         unselect_others=TRUE;
1101         extended_select=FALSE;
1102     }
1103
1104     wxGenericTreeItem *item = itemId.m_pItem;
1105
1106     wxTreeEvent event( wxEVT_COMMAND_TREE_SEL_CHANGING, GetId() );
1107     event.m_item = item;
1108     event.m_itemOld = m_current;
1109     event.SetEventObject( this );
1110     // TODO : Here we don't send any selection mode yet !
1111
1112     if ( GetEventHandler()->ProcessEvent( event ) && !event.IsAllowed() )
1113       return;
1114
1115     // ctrl press
1116     if (unselect_others)
1117     {
1118         if (is_single) Unselect(); // to speed up thing
1119         else UnselectAll();
1120     }
1121
1122     // shift press
1123     if (extended_select)
1124     {
1125         if (m_current == NULL) m_current=m_key_current=GetRootItem().m_pItem;
1126         // don't change the mark (m_current)
1127         SelectItemRange(m_current, item);
1128     }
1129     else
1130     {
1131         bool select=TRUE; // the default
1132
1133         // Check if we need to toggle hilight (ctrl mode)
1134         if (!unselect_others)
1135           select=!item->HasHilight();
1136
1137         m_current = m_key_current = item;
1138         m_current->SetHilight(select);
1139         RefreshLine( m_current );
1140     }
1141
1142     event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGED);
1143     GetEventHandler()->ProcessEvent( event );
1144 }
1145
1146 void wxTreeCtrl::FillArray(wxGenericTreeItem *item, wxArrayTreeItemIds &array) const
1147 {
1148   if (item->HasHilight()) array.Add(wxTreeItemId(item));
1149
1150   if (item->HasChildren())
1151     {
1152       wxArrayGenericTreeItems& children = item->GetChildren();
1153       size_t count = children.Count();
1154       for ( size_t n = 0; n < count; ++n )
1155         FillArray(children[n],array);
1156     }
1157 }
1158
1159 size_t wxTreeCtrl::GetSelections(wxArrayTreeItemIds &array) const
1160 {
1161   array.Empty();
1162   FillArray(GetRootItem().m_pItem, array);
1163
1164   return array.Count();
1165 }
1166
1167 void wxTreeCtrl::EnsureVisible(const wxTreeItemId& item)
1168 {
1169     if (!item.IsOk()) return;
1170
1171     wxGenericTreeItem *gitem = item.m_pItem;
1172
1173     // first expand all parent branches
1174     wxGenericTreeItem *parent = gitem->GetParent();
1175     while ( parent && !parent->IsExpanded() )
1176     {
1177         Expand(parent);
1178
1179         parent = parent->GetParent();
1180     }
1181
1182     if (parent) CalculatePositions();
1183
1184     ScrollTo(item);
1185 }
1186
1187 void wxTreeCtrl::ScrollTo(const wxTreeItemId &item)
1188 {
1189     if (!item.IsOk()) return;
1190
1191     wxGenericTreeItem *gitem = item.m_pItem;
1192
1193     // now scroll to the item
1194     int item_y = gitem->GetY();
1195
1196     int start_x = 0;
1197     int start_y = 0;
1198     ViewStart( &start_x, &start_y );
1199     start_y *= PIXELS_PER_UNIT;
1200
1201     int client_h = 0;
1202     int client_w = 0;
1203     GetClientSize( &client_w, &client_h );
1204
1205     if (item_y < start_y+3)
1206     {
1207         // going down
1208         int x = 0;
1209         int y = 0;
1210         m_anchor->GetSize( x, y, this );
1211         y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1212         int x_pos = GetScrollPos( wxHORIZONTAL );
1213         // Item should appear at top
1214         SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, item_y/PIXELS_PER_UNIT );
1215     }
1216     else if (item_y+GetLineHeight(gitem) > start_y+client_h)
1217     {
1218        // going up
1219        int x = 0;
1220        int y = 0;
1221        m_anchor->GetSize( x, y, this );
1222        y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1223        item_y += PIXELS_PER_UNIT+2;
1224        int x_pos = GetScrollPos( wxHORIZONTAL );
1225         // Item should appear at bottom
1226        SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, (item_y+GetLineHeight(gitem)-client_h)/PIXELS_PER_UNIT );
1227     }
1228 }
1229
1230 // FIXME: tree sorting functions are not reentrant and not MT-safe!
1231 static wxTreeCtrl *s_treeBeingSorted = NULL;
1232
1233 static int tree_ctrl_compare_func(wxGenericTreeItem **item1,
1234                                   wxGenericTreeItem **item2)
1235 {
1236     wxCHECK_MSG( s_treeBeingSorted, 0, _T("bug in wxTreeCtrl::SortChildren()") );
1237
1238     return s_treeBeingSorted->OnCompareItems(*item1, *item2);
1239 }
1240
1241 int wxTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
1242                                const wxTreeItemId& item2)
1243 {
1244     return wxStrcmp(GetItemText(item1), GetItemText(item2));
1245 }
1246
1247 void wxTreeCtrl::SortChildren(const wxTreeItemId& itemId)
1248 {
1249     wxCHECK_RET( itemId.IsOk(), _T("invalid tree item") );
1250
1251     wxGenericTreeItem *item = itemId.m_pItem;
1252
1253     wxCHECK_RET( !s_treeBeingSorted,
1254                  _T("wxTreeCtrl::SortChildren is not reentrant") );
1255
1256     wxArrayGenericTreeItems& children = item->GetChildren();
1257     if ( children.Count() > 1 )
1258     {
1259         s_treeBeingSorted = this;
1260         children.Sort(tree_ctrl_compare_func);
1261         s_treeBeingSorted = NULL;
1262
1263         m_dirty = TRUE;
1264     }
1265     //else: don't make the tree dirty as nothing changed
1266 }
1267
1268 wxImageList *wxTreeCtrl::GetImageList() const
1269 {
1270     return m_imageListNormal;
1271 }
1272
1273 wxImageList *wxTreeCtrl::GetStateImageList() const
1274 {
1275     return m_imageListState;
1276 }
1277
1278 void wxTreeCtrl::SetImageList(wxImageList *imageList)
1279 {
1280    m_imageListNormal = imageList;
1281
1282    // Calculate a m_lineHeight value from the image sizes.
1283    // May be toggle off. Then wxTreeCtrl will spread when
1284    // necessary (which might look ugly).
1285 #if 1
1286    wxPaintDC dc(this);
1287    m_lineHeight = (int)(dc.GetCharHeight() + 4);
1288    int
1289       width = 0,
1290       height = 0,
1291       n = m_imageListNormal->GetImageCount();
1292    for(int i = 0; i < n ; i++)
1293    {
1294       m_imageListNormal->GetSize(i, width, height);
1295       if(height > m_lineHeight) m_lineHeight = height;
1296    }
1297
1298    if (m_lineHeight<40) m_lineHeight+=4; // at least 4 pixels (odd such that a line can be drawn in between)
1299    else m_lineHeight+=m_lineHeight/10;   // otherwise 10% extra spacing
1300
1301 #endif
1302 }
1303
1304 void wxTreeCtrl::SetStateImageList(wxImageList *imageList)
1305 {
1306     m_imageListState = imageList;
1307 }
1308
1309 // -----------------------------------------------------------------------------
1310 // helpers
1311 // -----------------------------------------------------------------------------
1312
1313 void wxTreeCtrl::AdjustMyScrollbars()
1314 {
1315     if (m_anchor)
1316     {
1317         int x = 0;
1318         int y = 0;
1319         m_anchor->GetSize( x, y, this );
1320         //y += GetLineHeight(m_anchor);
1321         y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1322         int x_pos = GetScrollPos( wxHORIZONTAL );
1323         int y_pos = GetScrollPos( wxVERTICAL );
1324         SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, y_pos );
1325     }
1326     else
1327     {
1328         SetScrollbars( 0, 0, 0, 0 );
1329     }
1330 }
1331
1332 int wxTreeCtrl::GetLineHeight(wxGenericTreeItem *item) const
1333 {
1334   if (GetWindowStyleFlag() & wxTR_HAS_VARIABLE_ROW_HEIGHT)
1335     return item->GetHeight();
1336   else
1337     return m_lineHeight;
1338 }
1339
1340 void wxTreeCtrl::PaintItem(wxGenericTreeItem *item, wxDC& dc)
1341 {
1342     // render bold items in bold
1343     wxFont fontOld;
1344     wxFont fontNew;
1345
1346     if (item->IsBold())
1347     {
1348         fontOld = dc.GetFont();
1349         if (fontOld.Ok())
1350         {
1351           // VZ: is there any better way to make a bold variant of old font?
1352           fontNew = wxFont( fontOld.GetPointSize(),
1353                             fontOld.GetFamily(),
1354                             fontOld.GetStyle(),
1355                             wxBOLD,
1356                             fontOld.GetUnderlined());
1357           dc.SetFont(fontNew);
1358         }
1359         else
1360         {
1361             wxFAIL_MSG(_T("wxDC::GetFont() failed!"));
1362         }
1363     }
1364
1365     long text_w = 0;
1366     long text_h = 0;
1367     dc.GetTextExtent( item->GetText(), &text_w, &text_h );
1368
1369     int image_h = 0;
1370     int image_w = 0;
1371     if ((item->IsExpanded()) && (item->GetSelectedImage() != -1))
1372     {
1373         m_imageListNormal->GetSize( item->GetSelectedImage(), image_w, image_h );
1374         image_w += 4;
1375     }
1376     else if (item->GetImage() != -1)
1377     {
1378         m_imageListNormal->GetSize( item->GetImage(), image_w, image_h );
1379         image_w += 4;
1380     }
1381
1382     int total_h = GetLineHeight(item);
1383
1384     dc.DrawRectangle( item->GetX()-2, item->GetY(), item->GetWidth()+2, total_h );
1385
1386     if ((item->IsExpanded()) && (item->GetSelectedImage() != -1))
1387     {
1388         dc.SetClippingRegion( item->GetX(), item->GetY(), image_w-2, total_h );
1389         m_imageListNormal->Draw( item->GetSelectedImage(), dc,
1390                                  item->GetX(),
1391                                  item->GetY() +((total_h > image_h)?((total_h-image_h)/2):0),
1392                                  wxIMAGELIST_DRAW_TRANSPARENT );
1393         dc.DestroyClippingRegion();
1394     }
1395     else if (item->GetImage() != -1)
1396     {
1397         dc.SetClippingRegion( item->GetX(), item->GetY(), image_w-2, total_h );
1398         m_imageListNormal->Draw( item->GetImage(), dc,
1399                                  item->GetX(),
1400                                  item->GetY() +((total_h > image_h)?((total_h-image_h)/2):0),
1401                                  wxIMAGELIST_DRAW_TRANSPARENT );
1402         dc.DestroyClippingRegion();
1403     }
1404
1405     dc.SetBackgroundMode(wxTRANSPARENT);
1406     dc.DrawText( item->GetText(), image_w + item->GetX(), item->GetY()
1407                  + ((total_h > text_h) ? (total_h - text_h)/2 : 0));
1408
1409     // restore normal font for bold items
1410     if (fontOld.Ok())
1411     {
1412         dc.SetFont( fontOld);
1413     }
1414 }
1415
1416 // Now y stands for the top of the item, whereas it used to stand for middle !
1417 void wxTreeCtrl::PaintLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &y )
1418 {
1419     int horizX = level*m_indent;
1420
1421     item->SetX( horizX+m_indent+m_spacing );
1422     item->SetY( y );
1423
1424     int oldY = y;
1425     y+=GetLineHeight(item)/2;
1426
1427     item->SetCross( horizX+m_indent, y );
1428
1429     int exposed_x = dc.LogicalToDeviceX( 0 );
1430     int exposed_y = dc.LogicalToDeviceY( item->GetY()-2 );
1431
1432     if (IsExposed( exposed_x, exposed_y, 10000, GetLineHeight(item)+4 ))  // 10000 = very much
1433     {
1434         int startX = horizX;
1435         int endX = horizX + (m_indent-5);
1436
1437 //        if (!item->HasChildren()) endX += (m_indent+5);
1438         if (!item->HasChildren()) endX += 20;
1439
1440         dc.DrawLine( startX, y, endX, y );
1441
1442         if (item->HasPlus())
1443         {
1444             dc.DrawLine( horizX+(m_indent+5), y, horizX+(m_indent+15), y );
1445             dc.SetPen( *wxGREY_PEN );
1446             dc.SetBrush( *wxWHITE_BRUSH );
1447             dc.DrawRectangle( horizX+(m_indent-5), y-4, 11, 9 );
1448
1449             dc.SetPen( *wxBLACK_PEN );
1450             dc.DrawLine( horizX+(m_indent-2), y, horizX+(m_indent+3), y );
1451             if (!item->IsExpanded())
1452                 dc.DrawLine( horizX+m_indent, y-2, horizX+m_indent, y+3 );
1453
1454             dc.SetPen( m_dottedPen );
1455         }
1456
1457         if (item->HasHilight())
1458         {
1459             dc.SetTextForeground( wxSystemSettings::GetSystemColour( wxSYS_COLOUR_HIGHLIGHTTEXT ) );
1460
1461             dc.SetBrush( *m_hilightBrush );
1462
1463             if (m_hasFocus)
1464                 dc.SetPen( *wxBLACK_PEN );
1465             else
1466                 dc.SetPen( *wxTRANSPARENT_PEN );
1467
1468             PaintItem(item, dc);
1469
1470             dc.SetPen( m_dottedPen );
1471             dc.SetTextForeground( *wxBLACK );
1472             dc.SetBrush( *wxWHITE_BRUSH );
1473         }
1474         else
1475         {
1476             dc.SetBrush( *wxWHITE_BRUSH );
1477             dc.SetPen( *wxTRANSPARENT_PEN );
1478
1479             PaintItem(item, dc);
1480
1481             dc.SetPen( m_dottedPen );
1482         }
1483     }
1484
1485     y = oldY+GetLineHeight(item);
1486
1487     if (item->IsExpanded())
1488     {
1489         oldY+=GetLineHeight(item)/2;
1490         int semiOldY=y; // (=y) for stupid compilator
1491
1492         wxArrayGenericTreeItems& children = item->GetChildren();
1493         size_t n, count = children.Count();
1494         for ( n = 0; n < count; ++n )
1495         {
1496             semiOldY=y;
1497             PaintLevel( children[n], dc, level+1, y );
1498         }
1499
1500         // it may happen that the item is expanded but has no items (when you
1501         // delete all its children for example) - don't draw the vertical line
1502         // in this case
1503         if (count > 0)
1504           {
1505             semiOldY+=GetLineHeight(children[--n])/2;
1506             dc.DrawLine( horizX+m_indent, oldY+5, horizX+m_indent, semiOldY );
1507           }
1508     }
1509 }
1510
1511 void wxTreeCtrl::DrawBorder(wxTreeItemId &item)
1512 {
1513   if (!item) return;
1514
1515     wxGenericTreeItem *i=item.m_pItem;
1516
1517     wxPaintDC dc(this);
1518     PrepareDC( dc );
1519     dc.SetLogicalFunction(wxINVERT);
1520
1521     int w,h,x;
1522     ViewStart(&x,&h);     // we only need x
1523     GetClientSize(&w,&h); // we only need w
1524
1525     h=GetLineHeight(i)+1;
1526     // 2 white column at border
1527     dc.DrawRectangle( PIXELS_PER_UNIT*x+2, i->GetY()-1, w-6, h);
1528 }
1529
1530 void wxTreeCtrl::DrawLine(wxTreeItemId &item, bool below)
1531 {
1532   if (!item) return;
1533
1534     wxGenericTreeItem *i=item.m_pItem;
1535
1536     wxPaintDC dc(this);
1537     PrepareDC( dc );
1538     dc.SetLogicalFunction(wxINVERT);
1539
1540     int w,h,y;
1541     GetSize(&w,&h);
1542
1543     if (below) y=i->GetY()+GetLineHeight(i)-1;
1544     else y=i->GetY();
1545
1546     dc.DrawLine( 0, y, w, y);
1547 }
1548
1549 // -----------------------------------------------------------------------------
1550 // wxWindows callbacks
1551 // -----------------------------------------------------------------------------
1552
1553 void wxTreeCtrl::OnPaint( wxPaintEvent &WXUNUSED(event) )
1554 {
1555     if ( !m_anchor)
1556         return;
1557
1558     wxPaintDC dc(this);
1559     PrepareDC( dc );
1560
1561     dc.SetFont( wxSystemSettings::GetSystemFont( wxSYS_DEFAULT_GUI_FONT ) );
1562
1563     dc.SetPen( m_dottedPen );
1564     //if(GetImageList() == NULL)
1565     // m_lineHeight = (int)(dc.GetCharHeight() + 4);
1566
1567     int y = 2;
1568     PaintLevel( m_anchor, dc, 0, y );
1569 }
1570
1571 void wxTreeCtrl::OnSetFocus( wxFocusEvent &WXUNUSED(event) )
1572 {
1573     m_hasFocus = TRUE;
1574
1575     if (m_current) RefreshLine( m_current );
1576 }
1577
1578 void wxTreeCtrl::OnKillFocus( wxFocusEvent &WXUNUSED(event) )
1579 {
1580     m_hasFocus = FALSE;
1581
1582     if (m_current) RefreshLine( m_current );
1583 }
1584
1585 void wxTreeCtrl::OnChar( wxKeyEvent &event )
1586 {
1587     wxTreeEvent te( wxEVT_COMMAND_TREE_KEY_DOWN, GetId() );
1588     te.m_code = event.KeyCode();
1589     te.SetEventObject( this );
1590     GetEventHandler()->ProcessEvent( te );
1591
1592     if ( (m_current == 0) || (m_key_current == 0) )
1593     {
1594         event.Skip();
1595         return;
1596     }
1597
1598     bool is_multiple=(GetWindowStyleFlag() & wxTR_MULTIPLE);
1599     bool extended_select=(event.ShiftDown() && is_multiple);
1600     bool unselect_others=!(extended_select || (event.ControlDown() && is_multiple));
1601
1602     switch (event.KeyCode())
1603     {
1604         case '+':
1605         case WXK_ADD:
1606             if (m_current->HasPlus() && !IsExpanded(m_current))
1607             {
1608                 Expand(m_current);
1609             }
1610             break;
1611
1612         case '-':
1613         case WXK_SUBTRACT:
1614             if (IsExpanded(m_current))
1615             {
1616                 Collapse(m_current);
1617             }
1618             break;
1619
1620         case '*':
1621         case WXK_MULTIPLY:
1622             Toggle(m_current);
1623             break;
1624
1625         case ' ':
1626         case WXK_RETURN:
1627             {
1628                 wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_ACTIVATED, GetId() );
1629                 event.m_item = m_current;
1630                 event.m_code = 0;
1631                 event.SetEventObject( this );
1632                 GetEventHandler()->ProcessEvent( event );
1633             }
1634             break;
1635
1636             // up goes to the previous sibling or to the last of its children if
1637             // it's expanded
1638         case WXK_UP:
1639             {
1640                 wxTreeItemId prev = GetPrevSibling( m_key_current );
1641                 if (!prev)
1642                 {
1643                     prev = GetParent( m_key_current );
1644                     if (prev)
1645                     {
1646                         long cockie = 0;
1647                         wxTreeItemId current = m_key_current;
1648                         if (current == GetFirstChild( prev, cockie ))
1649                         {
1650                             // otherwise we return to where we came from
1651                             SelectItem( prev, unselect_others, extended_select );
1652                             m_key_current=prev.m_pItem;
1653                             EnsureVisible( prev );
1654                             break;
1655                         }
1656                     }
1657                 }
1658                 if (prev)
1659                 {
1660                     while ( IsExpanded(prev) && HasChildren(prev) )
1661                     {
1662                         wxTreeItemId child = GetLastChild(prev);
1663                         if ( child )
1664                         {
1665                             prev = child;
1666                         }
1667                     }
1668
1669                     SelectItem( prev, unselect_others, extended_select );
1670                     m_key_current=prev.m_pItem;
1671                     EnsureVisible( prev );
1672                 }
1673             }
1674             break;
1675
1676             // left arrow goes to the parent
1677         case WXK_LEFT:
1678             {
1679                 wxTreeItemId prev = GetParent( m_current );
1680                 if (prev)
1681                 {
1682                     EnsureVisible( prev );
1683                     SelectItem( prev, unselect_others, extended_select );
1684                 }
1685             }
1686             break;
1687
1688         case WXK_RIGHT:
1689             // this works the same as the down arrow except that we also expand the
1690             // item if it wasn't expanded yet
1691             Expand(m_current);
1692             // fall through
1693
1694         case WXK_DOWN:
1695             {
1696                 if (IsExpanded(m_key_current) && HasChildren(m_key_current))
1697                 {
1698                     long cookie = 0;
1699                     wxTreeItemId child = GetFirstChild( m_key_current, cookie );
1700                     SelectItem( child, unselect_others, extended_select );
1701                     m_key_current=child.m_pItem;
1702                     EnsureVisible( child );
1703                 }
1704                 else
1705                 {
1706                     wxTreeItemId next = GetNextSibling( m_key_current );
1707 //                    if (next == 0)
1708                     if (!next)
1709                     {
1710                         wxTreeItemId current = m_key_current;
1711                         while (current && !next)
1712                         {
1713                             current = GetParent( current );
1714                             if (current) next = GetNextSibling( current );
1715                         }
1716                     }
1717 //                    if (next != 0)
1718                     if (next)
1719                     {
1720                         SelectItem( next, unselect_others, extended_select );
1721                         m_key_current=next.m_pItem;
1722                         EnsureVisible( next );
1723                     }
1724                 }
1725             }
1726             break;
1727
1728             // <End> selects the last visible tree item
1729         case WXK_END:
1730             {
1731                 wxTreeItemId last = GetRootItem();
1732
1733                 while ( last.IsOk() && IsExpanded(last) )
1734                 {
1735                     wxTreeItemId lastChild = GetLastChild(last);
1736
1737                     // it may happen if the item was expanded but then all of
1738                     // its children have been deleted - so IsExpanded() returned
1739                     // TRUE, but GetLastChild() returned invalid item
1740                     if ( !lastChild )
1741                         break;
1742
1743                     last = lastChild;
1744                 }
1745
1746                 if ( last.IsOk() )
1747                 {
1748                     EnsureVisible( last );
1749                     SelectItem( last, unselect_others, extended_select );
1750                 }
1751             }
1752             break;
1753
1754             // <Home> selects the root item
1755         case WXK_HOME:
1756             {
1757                 wxTreeItemId prev = GetRootItem();
1758                 if (prev)
1759                 {
1760                     EnsureVisible( prev );
1761                     SelectItem( prev, unselect_others, extended_select );
1762                 }
1763             }
1764             break;
1765
1766         default:
1767             event.Skip();
1768     }
1769 }
1770
1771 wxTreeItemId wxTreeCtrl::HitTest(const wxPoint& point, int& flags)
1772 {
1773     wxClientDC dc(this);
1774     PrepareDC(dc);
1775     long x = dc.DeviceToLogicalX( (long)point.x );
1776     long y = dc.DeviceToLogicalY( (long)point.y );
1777     int w, h;
1778     GetSize(&w, &h);
1779
1780     flags=0;
1781     if (point.x<0) flags|=wxTREE_HITTEST_TOLEFT;
1782     if (point.x>w) flags|=wxTREE_HITTEST_TORIGHT;
1783     if (point.y<0) flags|=wxTREE_HITTEST_ABOVE;
1784     if (point.y>h) flags|=wxTREE_HITTEST_BELOW;
1785
1786     return m_anchor->HitTest( wxPoint(x, y), this, flags);
1787 }
1788
1789 /* **** */
1790
1791 void wxTreeCtrl::Edit( const wxTreeItemId& item )
1792 {
1793     if (!item.IsOk()) return;
1794
1795     m_currentEdit = item.m_pItem;
1796
1797     wxTreeEvent te( wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT, GetId() );
1798     te.m_item = m_currentEdit;
1799     te.SetEventObject( this );
1800     GetEventHandler()->ProcessEvent( te );
1801
1802     if (!te.IsAllowed()) return;
1803
1804     wxString s = m_currentEdit->GetText();
1805     int x = m_currentEdit->GetX();
1806     int y = m_currentEdit->GetY();
1807     int w = m_currentEdit->GetWidth();
1808     int h = m_currentEdit->GetHeight();
1809
1810     int image_h = 0;
1811     int image_w = 0;
1812     if ((m_currentEdit->IsExpanded()) && (m_currentEdit->GetSelectedImage() != -1))
1813     {
1814         m_imageListNormal->GetSize( m_currentEdit->GetSelectedImage(), image_w, image_h );
1815         image_w += 4;
1816     }
1817     else if (m_currentEdit->GetImage() != -1)
1818     {
1819         m_imageListNormal->GetSize( m_currentEdit->GetImage(), image_w, image_h );
1820         image_w += 4;
1821     }
1822     x += image_w;
1823     w -= image_w + 4; // I don't know why +4 is needed
1824
1825     wxClientDC dc(this);
1826     PrepareDC( dc );
1827     x = dc.LogicalToDeviceX( x );
1828     y = dc.LogicalToDeviceY( y );
1829
1830     wxTreeTextCtrl *text = new wxTreeTextCtrl(
1831       this, -1, &m_renameAccept, &m_renameRes, this, s, wxPoint(x-4,y-4), wxSize(w+11,h+8) );
1832     text->SetFocus();
1833 }
1834
1835 void wxTreeCtrl::OnRenameTimer()
1836 {
1837     Edit( m_current );
1838 }
1839
1840 void wxTreeCtrl::OnRenameAccept()
1841 {
1842     wxTreeEvent le( wxEVT_COMMAND_TREE_END_LABEL_EDIT, GetId() );
1843     le.m_item = m_currentEdit;
1844     le.SetEventObject( this );
1845     le.m_label = m_renameRes;
1846     GetEventHandler()->ProcessEvent( le );
1847
1848     if (!le.IsAllowed()) return;
1849
1850     SetItemText( m_currentEdit, m_renameRes );
1851 }
1852
1853 void wxTreeCtrl::OnMouse( wxMouseEvent &event )
1854 {
1855     if (!event.LeftIsDown()) m_dragCount = 0;
1856
1857     if ( !(event.LeftUp() || event.LeftDClick() || event.Dragging()) ) return;
1858
1859     if ( !m_anchor ) return;
1860
1861     wxClientDC dc(this);
1862     PrepareDC(dc);
1863     long x = dc.DeviceToLogicalX( (long)event.GetX() );
1864     long y = dc.DeviceToLogicalY( (long)event.GetY() );
1865
1866     int flags=0;
1867     wxGenericTreeItem *item = m_anchor->HitTest( wxPoint(x,y), this, flags);
1868     bool onButton = flags & wxTREE_HITTEST_ONITEMBUTTON;
1869
1870     if (item == NULL) return;  /* we hit the blank area */
1871
1872     if (event.Dragging())
1873     {
1874         if (m_dragCount == 2)  /* small drag latency (3?) */
1875         {
1876             m_dragCount = 0;
1877
1878             wxTreeEvent nevent(wxEVT_COMMAND_TREE_BEGIN_DRAG, GetId());
1879             nevent.m_item = m_current;
1880             nevent.SetEventObject(this);
1881             GetEventHandler()->ProcessEvent(nevent);
1882         }
1883         else
1884         {
1885             m_dragCount++;
1886         }
1887         return;
1888     }
1889
1890     if (event.LeftUp() && (item == m_current) &&
1891         (flags & wxTREE_HITTEST_ONITEMLABEL) &&
1892         HasFlag(wxTR_EDIT_LABELS) )
1893     {
1894         m_renameTimer->Start( 100, TRUE );
1895         return;
1896     }
1897
1898     bool is_multiple=(GetWindowStyleFlag() & wxTR_MULTIPLE);
1899     bool extended_select=(event.ShiftDown() && is_multiple);
1900     bool unselect_others=!(extended_select || (event.ControlDown() && is_multiple));
1901
1902     if (onButton)
1903     {
1904         Toggle( item );
1905         if (is_multiple)
1906             return;
1907     }
1908
1909     SelectItem(item, unselect_others, extended_select);
1910
1911     if (event.LeftDClick())
1912     {
1913         wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_ACTIVATED, GetId() );
1914         event.m_item = item;
1915         event.m_code = 0;
1916         event.SetEventObject( this );
1917         GetEventHandler()->ProcessEvent( event );
1918     }
1919 }
1920
1921 void wxTreeCtrl::OnIdle( wxIdleEvent &WXUNUSED(event) )
1922 {
1923     /* after all changes have been done to the tree control,
1924      * we actually redraw the tree when everything is over */
1925
1926     if (!m_dirty)
1927         return;
1928
1929     m_dirty = FALSE;
1930
1931     CalculatePositions();
1932     Refresh();
1933     AdjustMyScrollbars();
1934 }
1935
1936 void wxTreeCtrl::CalculateSize( wxGenericTreeItem *item, wxDC &dc )
1937 {
1938     long text_w = 0;
1939     long text_h = 0;
1940     // TODO : check for boldness. Here with suppose that font normal and bold
1941     //        have the same height !
1942     // TODO : bug here, text_w is sometime not the correct answer !!!
1943     dc.GetTextExtent( item->GetText(), &text_w, &text_h );
1944     text_h+=4;
1945
1946     int image_h = 0;
1947     int image_w = 0;
1948     if ((item->IsExpanded()) && (item->GetSelectedImage() != -1))
1949     {
1950         m_imageListNormal->GetSize( item->GetSelectedImage(), image_w, image_h );
1951         image_w += 4;
1952     }
1953     else if (item->GetImage() != -1)
1954     {
1955         m_imageListNormal->GetSize( item->GetImage(), image_w, image_h );
1956         image_w += 4;
1957     }
1958
1959     int total_h = (image_h > text_h) ? image_h : text_h;
1960
1961     if (total_h<40) total_h+=4; // at least 4 pixels
1962     else total_h+=total_h/10;   // otherwise 10% extra spacing
1963
1964     item->SetHeight(total_h);
1965     if (total_h>m_lineHeight) m_lineHeight=total_h;
1966
1967     item->SetWidth(image_w+text_w+2);
1968 }
1969
1970 // -----------------------------------------------------------------------------
1971 // for developper : y is now the top of the level
1972 // not the middle of it !
1973 void wxTreeCtrl::CalculateLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &y )
1974 {
1975     int horizX = level*m_indent;
1976
1977     CalculateSize( item, dc );
1978
1979     // set its position
1980     item->SetX( horizX+m_indent+m_spacing );
1981     item->SetY( y );
1982     y+=GetLineHeight(item);
1983
1984     if ( !item->IsExpanded() )
1985     {
1986         // we dont need to calculate collapsed branches
1987         return;
1988     }
1989
1990     wxArrayGenericTreeItems& children = item->GetChildren();
1991     size_t n, count = children.Count();
1992     for (n = 0; n < count; ++n )
1993       CalculateLevel( children[n], dc, level+1, y );  // recurse
1994 }
1995
1996 void wxTreeCtrl::CalculatePositions()
1997 {
1998     if ( !m_anchor ) return;
1999
2000     wxClientDC dc(this);
2001     PrepareDC( dc );
2002
2003     dc.SetFont( wxSystemSettings::GetSystemFont( wxSYS_DEFAULT_GUI_FONT ) );
2004
2005     dc.SetPen( m_dottedPen );
2006     //if(GetImageList() == NULL)
2007     // m_lineHeight = (int)(dc.GetCharHeight() + 4);
2008
2009     int y = 2; //GetLineHeight(m_anchor) / 2 + 2;
2010     CalculateLevel( m_anchor, dc, 0, y ); // start recursion
2011 }
2012
2013 void wxTreeCtrl::RefreshSubtree(wxGenericTreeItem *item)
2014 {
2015     wxClientDC dc(this);
2016     PrepareDC(dc);
2017
2018     int cw = 0;
2019     int ch = 0;
2020     GetClientSize( &cw, &ch );
2021
2022     wxRect rect;
2023     rect.x = dc.LogicalToDeviceX( 0 );
2024     rect.width = cw;
2025     rect.y = dc.LogicalToDeviceY( item->GetY() );
2026     rect.height = ch;
2027
2028     Refresh( TRUE, &rect );
2029
2030     AdjustMyScrollbars();
2031 }
2032
2033 void wxTreeCtrl::RefreshLine( wxGenericTreeItem *item )
2034 {
2035     wxClientDC dc(this);
2036     PrepareDC( dc );
2037
2038     wxRect rect;
2039     rect.x = dc.LogicalToDeviceX( item->GetX() - 2 );
2040     rect.y = dc.LogicalToDeviceY( item->GetY());
2041     rect.width = 1000;
2042     rect.height = GetLineHeight(item); //dc.GetCharHeight() + 6;
2043
2044     Refresh( TRUE, &rect );
2045 }
2046