src/generic/odcombo.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/odcombo.cpp
   3 // Purpose:     wxOwnerDrawnComboBox, wxVListBoxComboPopup
   4 // Author:      Jaakko Salli
   5 // Modified by:
   6 // Created:     Apr-30-2006
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2005 Jaakko Salli
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #if wxUSE_ODCOMBOBOX
  27
  28 #include "wx/odcombo.h"
  29
  30 #ifndef WX_PRECOMP
  31     #include "wx/log.h"
  32     #include "wx/combobox.h"
  33     #include "wx/dcclient.h"
  34     #include "wx/settings.h"
  35     #include "wx/dialog.h"
  36     #include "wx/textctrl.h"
  37 #endif
  38
  39 #include "wx/combo.h"
  40
  41 // ============================================================================
  42 // implementation
  43 // ============================================================================
  44
  45 // time in milliseconds before partial completion buffer drops
  46 #define wxODCB_PARTIAL_COMPLETION_TIME 1000
  47
  48 // ----------------------------------------------------------------------------
  49 // wxVListBoxComboPopup is a wxVListBox customized to act as a popup control
  50 //
  51 // ----------------------------------------------------------------------------
  52
  53
  54 BEGIN_EVENT_TABLE(wxVListBoxComboPopup, wxVListBox)
  55     EVT_MOTION(wxVListBoxComboPopup::OnMouseMove)
  56     EVT_KEY_DOWN(wxVListBoxComboPopup::OnKey)
  57     EVT_LEFT_UP(wxVListBoxComboPopup::OnLeftClick)
  58 END_EVENT_TABLE()
  59
  60
  61 void wxVListBoxComboPopup::Init()
  62 {
  63     m_widestWidth = 0;
  64     m_widestItem = -1;
  65     m_widthsDirty = false;
  66     m_findWidest = false;
  67     m_itemHeight = 0;
  68     m_value = -1;
  69     m_itemHover = -1;
  70     m_clientDataItemsType = wxClientData_None;
  71     m_partialCompletionString = wxEmptyString;
  72 }
  73
  74 bool wxVListBoxComboPopup::Create(wxWindow* parent)
  75 {
  76     if ( !wxVListBox::Create(parent,
  77                              wxID_ANY,
  78                              wxDefaultPosition,
  79                              wxDefaultSize,
  80                              wxBORDER_SIMPLE | wxLB_INT_HEIGHT | wxWANTS_CHARS) )
  81         return false;
  82
  83     m_useFont = m_combo->GetFont();
  84
  85     wxVListBox::SetItemCount(m_strings.GetCount());
  86
  87     // TODO: Move this to SetFont
  88     m_itemHeight = GetCharHeight() + 0;
  89
  90     return true;
  91 }
  92
  93 wxVListBoxComboPopup::~wxVListBoxComboPopup()
  94 {
  95     Clear();
  96 }
  97
  98 bool wxVListBoxComboPopup::LazyCreate()
  99 {
 100     // NB: There is a bug with wxVListBox that can be avoided by creating
 101     //     it later (bug causes empty space to be shown if initial selection
 102     //     is at the end of a list longer than the control can show at once).
 103     return true;
 104 }
 105
 106 // paint the control itself
 107 void wxVListBoxComboPopup::PaintComboControl( wxDC& dc, const wxRect& rect )
 108 {
 109     if ( !(m_combo->GetWindowStyle() & wxODCB_STD_CONTROL_PAINT) )
 110     {
 111         int flags = wxODCB_PAINTING_CONTROL;
 112
 113         if ( m_combo->ShouldDrawFocus() )
 114             flags |= wxODCB_PAINTING_SELECTED;
 115
 116         OnDrawBg(dc, rect, m_value, flags);
 117
 118         if ( m_value >= 0 )
 119         {
 120             OnDrawItem(dc,rect,m_value,flags);
 121             return;
 122         }
 123     }
 124
 125     wxComboPopup::PaintComboControl(dc,rect);
 126 }
 127
 128 void wxVListBoxComboPopup::OnDrawItem(wxDC& dc, const wxRect& rect, size_t n) const
 129 {
 130     // TODO: Maybe this code could be moved to wxVListBox::OnPaint?
 131     dc.SetFont(m_useFont);
 132
 133     int flags = 0;
 134
 135     // Set correct text colour for selected items
 136     if ( wxVListBox::GetSelection() == (int) n )
 137     {
 138         dc.SetTextForeground( wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT) );
 139         flags |= wxODCB_PAINTING_SELECTED;
 140     }
 141     else
 142     {
 143         dc.SetTextForeground( wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT) );
 144     }
 145
 146     OnDrawItem(dc,rect,(int)n,flags);
 147 }
 148
 149 wxCoord wxVListBoxComboPopup::OnMeasureItem(size_t n) const
 150 {
 151     wxOwnerDrawnComboBox* combo = (wxOwnerDrawnComboBox*) m_combo;
 152
 153     wxASSERT_MSG( combo->IsKindOf(CLASSINFO(wxOwnerDrawnComboBox)),
 154                   wxT("you must subclass wxVListBoxComboPopup for drawing and measuring methods") );
 155
 156     wxCoord h = combo->OnMeasureItem(n);
 157     if ( h < 0 )
 158         h = m_itemHeight;
 159     return h;
 160 }
 161
 162 wxCoord wxVListBoxComboPopup::OnMeasureItemWidth(size_t n) const
 163 {
 164     wxOwnerDrawnComboBox* combo = (wxOwnerDrawnComboBox*) m_combo;
 165
 166     wxASSERT_MSG( combo->IsKindOf(CLASSINFO(wxOwnerDrawnComboBox)),
 167                   wxT("you must subclass wxVListBoxComboPopup for drawing and measuring methods") );
 168
 169     return combo->OnMeasureItemWidth(n);
 170 }
 171
 172 void wxVListBoxComboPopup::OnDrawBg( wxDC& dc,
 173                                      const wxRect& rect,
 174                                      int item,
 175                                      int flags ) const
 176 {
 177     wxOwnerDrawnComboBox* combo = (wxOwnerDrawnComboBox*) m_combo;
 178
 179     wxASSERT_MSG( combo->IsKindOf(CLASSINFO(wxOwnerDrawnComboBox)),
 180                   wxT("you must subclass wxVListBoxComboPopup for drawing and measuring methods") );
 181
 182     if ( IsCurrent((size_t)item) && !(flags & wxODCB_PAINTING_CONTROL) )
 183         flags |= wxODCB_PAINTING_SELECTED;
 184
 185     combo->OnDrawBackground(dc,rect,item,flags);
 186 }
 187
 188 void wxVListBoxComboPopup::OnDrawBackground(wxDC& dc, const wxRect& rect, size_t n) const
 189 {
 190     OnDrawBg(dc,rect,(int)n,0);
 191 }
 192
 193 // This is called from wxVListBoxComboPopup::OnDrawItem, with text colour and font prepared
 194 void wxVListBoxComboPopup::OnDrawItem( wxDC& dc, const wxRect& rect, int item, int flags ) const
 195 {
 196     wxOwnerDrawnComboBox* combo = (wxOwnerDrawnComboBox*) m_combo;
 197
 198     wxASSERT_MSG( combo->IsKindOf(CLASSINFO(wxOwnerDrawnComboBox)),
 199                   wxT("you must subclass wxVListBoxComboPopup for drawing and measuring methods") );
 200
 201     combo->OnDrawItem(dc,rect,item,flags);
 202 }
 203
 204 void wxVListBoxComboPopup::DismissWithEvent()
 205 {
 206     StopPartialCompletion();
 207
 208     int selection = wxVListBox::GetSelection();
 209
 210     Dismiss();
 211
 212     if ( selection != wxNOT_FOUND )
 213         m_stringValue = m_strings[selection];
 214     else
 215         m_stringValue = wxEmptyString;
 216
 217     if ( m_stringValue != m_combo->GetValue() )
 218         m_combo->SetValueWithEvent(m_stringValue);
 219
 220     m_value = selection;
 221
 222     SendComboBoxEvent(selection);
 223 }
 224
 225 void wxVListBoxComboPopup::SendComboBoxEvent( int selection )
 226 {
 227     wxCommandEvent evt(wxEVT_COMMAND_COMBOBOX_SELECTED,m_combo->GetId());
 228
 229     evt.SetEventObject(m_combo);
 230
 231     evt.SetInt(selection);
 232
 233     // Set client data, if any
 234     if ( selection >= 0 && (int)m_clientDatas.GetCount() > selection )
 235     {
 236         void* clientData = m_clientDatas[selection];
 237         if ( m_clientDataItemsType == wxClientData_Object )
 238             evt.SetClientObject((wxClientData*)clientData);
 239         else
 240             evt.SetClientData(clientData);
 241     }
 242
 243     m_combo->GetEventHandler()->AddPendingEvent(evt);
 244 }
 245
 246 // returns true if key was consumed
 247 bool wxVListBoxComboPopup::HandleKey( int keycode, bool saturate, wxChar unicode )
 248 {
 249     int value = m_value;
 250     int itemCount = GetCount();
 251     int comboStyle = m_combo->GetWindowStyle();
 252
 253     // this is the character equivalent of the code
 254     wxChar keychar=0;
 255     if ((keycode >= WXK_SPACE) && (keycode <=255) && (keycode != WXK_DELETE) && wxIsprint(keycode))
 256     {
 257         keychar = (wxChar)keycode;
 258     }
 259     else if (unicode>0)
 260     {
 261         keychar = unicode;
 262     }
 263
 264     if ( keycode == WXK_DOWN || keycode == WXK_RIGHT )
 265     {
 266         value++;
 267         StopPartialCompletion();
 268     }
 269     else if ( keycode == WXK_UP || keycode == WXK_LEFT )
 270     {
 271         value--;
 272         StopPartialCompletion();
 273     }
 274     else if ( keycode == WXK_PAGEDOWN )
 275     {
 276         value+=10;
 277         StopPartialCompletion();
 278     }
 279     else if ( keycode == WXK_PAGEUP )
 280     {
 281         value-=10;
 282         StopPartialCompletion();
 283     }
 284     else if ( comboStyle & wxCB_READONLY )
 285     {
 286         // Try partial completion
 287
 288         // find the new partial completion string
 289 #if wxUSE_TIMER
 290         if (m_partialCompletionTimer.IsRunning())
 291             m_partialCompletionString+=wxString(keychar);
 292         else
 293 #endif // wxUSE_TIMER
 294             m_partialCompletionString=wxString(keychar);
 295
 296         // now search through the values to see if this is found
 297         int found = -1;
 298         unsigned int length=m_partialCompletionString.length();
 299         int i;
 300         for (i=0; i<itemCount; i++)
 301         {
 302             wxString item=GetString(i);
 303             if (( item.length() >= length) && (!  m_partialCompletionString.CmpNoCase(item.Left(length))))
 304             {
 305                 found=i;
 306                 break;
 307             }
 308         }
 309
 310         if (found<0)
 311         {
 312             StopPartialCompletion();
 313             ::wxBell();
 314             return true; // to stop the first value being set
 315         }
 316         else
 317         {
 318             value=i;
 319 #if wxUSE_TIMER
 320             m_partialCompletionTimer.Start(wxODCB_PARTIAL_COMPLETION_TIME, true);
 321 #endif // wxUSE_TIMER
 322         }
 323     }
 324     else
 325         return false;
 326
 327     if ( saturate )
 328     {
 329         if ( value >= itemCount )
 330             value = itemCount - 1;
 331         else if ( value < 0 )
 332             value = 0;
 333     }
 334     else
 335     {
 336         if ( value >= itemCount )
 337             value -= itemCount;
 338         else if ( value < 0 )
 339             value += itemCount;
 340     }
 341
 342     if ( value == m_value )
 343         // Even if value was same, don't skip the event
 344         // (good for consistency)
 345         return true;
 346
 347     m_value = value;
 348
 349     if ( value >= 0 )
 350         m_combo->SetValue(m_strings[value]);
 351
 352     SendComboBoxEvent(m_value);
 353
 354     return true;
 355 }
 356
 357 // stop partial completion
 358 void wxVListBoxComboPopup::StopPartialCompletion()
 359 {
 360     m_partialCompletionString = wxEmptyString;
 361 #if wxUSE_TIMER
 362     m_partialCompletionTimer.Stop();
 363 #endif // wxUSE_TIMER
 364 }
 365
 366 void wxVListBoxComboPopup::OnComboDoubleClick()
 367 {
 368     // Cycle on dclick (disable saturation to allow true cycling).
 369     if ( !::wxGetKeyState(WXK_SHIFT) )
 370         HandleKey(WXK_DOWN,false);
 371     else
 372         HandleKey(WXK_UP,false);
 373 }
 374
 375 void wxVListBoxComboPopup::OnComboKeyEvent( wxKeyEvent& event )
 376 {
 377     // Saturated key movement on
 378     if ( !HandleKey(event.GetKeyCode(),true,
 379 #if wxUSE_UNICODE
 380         event.GetUnicodeKey()
 381 #else
 382         0
 383 #endif
 384         ) )
 385         event.Skip();
 386 }
 387
 388 void wxVListBoxComboPopup::OnPopup()
 389 {
 390     // *must* set value after size is set (this is because of a vlbox bug)
 391     wxVListBox::SetSelection(m_value);
 392 }
 393
 394 void wxVListBoxComboPopup::OnMouseMove(wxMouseEvent& event)
 395 {
 396     event.Skip();
 397
 398     // Move selection to cursor if it is inside the popup
 399
 400     int y = event.GetPosition().y;
 401     int fromBottom = GetClientSize().y - y;
 402
 403     // Since in any case we need to find out if the last item is only
 404     // partially visible, we might just as well replicate the HitTest
 405     // loop here.
 406     const size_t lineMax = GetVisibleEnd();
 407     for ( size_t line = GetVisibleBegin(); line < lineMax; line++ )
 408     {
 409         y -= OnGetRowHeight(line);
 410         if ( y < 0 )
 411         {
 412             // Only change selection if item is fully visible
 413             if ( (y + fromBottom) >= 0 )
 414             {
 415                 wxVListBox::SetSelection((int)line);
 416                 return;
 417             }
 418         }
 419     }
 420 }
 421
 422 void wxVListBoxComboPopup::OnLeftClick(wxMouseEvent& WXUNUSED(event))
 423 {
 424     DismissWithEvent();
 425 }
 426
 427 void wxVListBoxComboPopup::OnKey(wxKeyEvent& event)
 428 {
 429     // Hide popup if certain key or key combination was pressed
 430     if ( m_combo->IsKeyPopupToggle(event) )
 431     {
 432         StopPartialCompletion();
 433         Dismiss();
 434     }
 435     else if ( event.AltDown() )
 436     {
 437         // On both wxGTK and wxMSW, pressing Alt down seems to
 438         // completely freeze things in popup (ie. arrow keys and
 439         // enter won't work).
 440         return;
 441     }
 442     // Select item if ENTER is pressed
 443     else if ( event.GetKeyCode() == WXK_RETURN || event.GetKeyCode() == WXK_NUMPAD_ENTER )
 444     {
 445         DismissWithEvent();
 446     }
 447     else
 448     {
 449         int comboStyle = m_combo->GetWindowStyle();
 450         int keycode = event.GetKeyCode();
 451         // Process partial completion key codes here, but not the arrow keys as the base class will do that for us
 452         if ((comboStyle & wxCB_READONLY) &&
 453             (keycode >= WXK_SPACE) && (keycode <=255) && (keycode != WXK_DELETE) && wxIsprint(keycode))
 454         {
 455             OnComboKeyEvent(event);
 456             SetSelection(m_value); // ensure the highlight bar moves
 457         }
 458         else
 459             event.Skip();
 460     }
 461 }
 462
 463 void wxVListBoxComboPopup::Insert( const wxString& item, int pos )
 464 {
 465     // Need to change selection?
 466     wxString strValue;
 467     if ( !(m_combo->GetWindowStyle() & wxCB_READONLY) &&
 468          m_combo->GetValue() == item )
 469     {
 470         m_value = pos;
 471     }
 472
 473     m_strings.Insert(item,pos);
 474     m_clientDatas.Insert(NULL, pos);
 475
 476     m_widths.Insert(-1,pos);
 477     m_widthsDirty = true;
 478
 479     if ( IsCreated() )
 480         wxVListBox::SetItemCount( wxVListBox::GetItemCount()+1 );
 481 }
 482
 483 int wxVListBoxComboPopup::Append(const wxString& item)
 484 {
 485     int pos = (int)m_strings.GetCount();
 486
 487     if ( m_combo->GetWindowStyle() & wxCB_SORT )
 488     {
 489         // Find position
 490         // TODO: Could be optimized with binary search
 491         wxArrayString strings = m_strings;
 492         unsigned int i;
 493
 494         for ( i=0; i<strings.GetCount(); i++ )
 495         {
 496             if ( item.Cmp(strings.Item(i)) < 0 )
 497             {
 498                 pos = (int)i;
 499                 break;
 500             }
 501         }
 502     }
 503
 504     Insert(item,pos);
 505
 506     return pos;
 507 }
 508
 509 void wxVListBoxComboPopup::Clear()
 510 {
 511     wxASSERT(m_combo);
 512
 513     m_strings.Empty();
 514     m_widths.Empty();
 515
 516     m_widestWidth = 0;
 517     m_widestItem = -1;
 518
 519     ClearClientDatas();
 520
 521     m_value = wxNOT_FOUND;
 522
 523     if ( IsCreated() )
 524         wxVListBox::SetItemCount(0);
 525 }
 526
 527 void wxVListBoxComboPopup::ClearClientDatas()
 528 {
 529     if ( m_clientDataItemsType == wxClientData_Object )
 530     {
 531         size_t i;
 532         for ( i=0; i<m_clientDatas.GetCount(); i++ )
 533             delete (wxClientData*) m_clientDatas[i];
 534     }
 535
 536     m_clientDatas.Empty();
 537 }
 538
 539 void wxVListBoxComboPopup::SetItemClientData( unsigned int n,
 540                                               void* clientData,
 541                                               wxClientDataType clientDataItemsType )
 542 {
 543     // It should be sufficient to update this variable only here
 544     m_clientDataItemsType = clientDataItemsType;
 545
 546     m_clientDatas[n] = clientData;
 547
 548     ItemWidthChanged(n);
 549 }
 550
 551 void* wxVListBoxComboPopup::GetItemClientData(unsigned int n) const
 552 {
 553     if ( m_clientDatas.GetCount() > n )
 554         return m_clientDatas[n];
 555
 556     return NULL;
 557 }
 558
 559 void wxVListBoxComboPopup::Delete( unsigned int item )
 560 {
 561     // Remove client data, if set
 562     if ( m_clientDatas.GetCount() )
 563     {
 564         if ( m_clientDataItemsType == wxClientData_Object )
 565             delete (wxClientData*) m_clientDatas[item];
 566
 567         m_clientDatas.RemoveAt(item);
 568     }
 569
 570     m_strings.RemoveAt(item);
 571     m_widths.RemoveAt(item);
 572
 573     if ( (int)item == m_widestItem )
 574         m_findWidest = true;
 575
 576     int sel = GetSelection();
 577
 578     if ( IsCreated() )
 579         wxVListBox::SetItemCount( wxVListBox::GetItemCount()-1 );
 580
 581     // Fix selection
 582     if ( (int)item < sel )
 583         SetSelection(sel-1);
 584     else if ( (int)item == sel )
 585         SetSelection(wxNOT_FOUND);
 586 }
 587
 588 int wxVListBoxComboPopup::FindString(const wxString& s, bool bCase) const
 589 {
 590     return m_strings.Index(s, bCase);
 591 }
 592
 593 unsigned int wxVListBoxComboPopup::GetCount() const
 594 {
 595     return m_strings.GetCount();
 596 }
 597
 598 wxString wxVListBoxComboPopup::GetString( int item ) const
 599 {
 600     return m_strings[item];
 601 }
 602
 603 void wxVListBoxComboPopup::SetString( int item, const wxString& str )
 604 {
 605     m_strings[item] = str;
 606     ItemWidthChanged(item);
 607 }
 608
 609 wxString wxVListBoxComboPopup::GetStringValue() const
 610 {
 611     return m_stringValue;
 612 }
 613
 614 void wxVListBoxComboPopup::SetSelection( int item )
 615 {
 616     wxCHECK_RET( item == wxNOT_FOUND || ((unsigned int)item < GetCount()),
 617                  wxT("invalid index in wxVListBoxComboPopup::SetSelection") );
 618
 619     m_value = item;
 620
 621     if ( item >= 0 )
 622         m_stringValue = m_strings[item];
 623     else
 624         m_stringValue = wxEmptyString;
 625
 626     if ( IsCreated() )
 627         wxVListBox::SetSelection(item);
 628 }
 629
 630 int wxVListBoxComboPopup::GetSelection() const
 631 {
 632     return m_value;
 633 }
 634
 635 void wxVListBoxComboPopup::SetStringValue( const wxString& value )
 636 {
 637     int index = m_strings.Index(value);
 638
 639     m_stringValue = value;
 640
 641     if ( index >= 0 && index < (int)wxVListBox::GetItemCount() )
 642     {
 643         wxVListBox::SetSelection(index);
 644         m_value = index;
 645     }
 646 }
 647
 648 void wxVListBoxComboPopup::CalcWidths()
 649 {
 650     bool doFindWidest = m_findWidest;
 651
 652     // Measure items with dirty width.
 653     if ( m_widthsDirty )
 654     {
 655         unsigned int i;
 656         unsigned int n = m_widths.GetCount();
 657         int dirtyHandled = 0;
 658         wxArrayInt& widths = m_widths;
 659
 660         // I think using wxDC::GetTextExtent is faster than
 661         // wxWindow::GetTextExtent (assuming same dc is used
 662         // for all calls, as we do here).
 663         wxClientDC dc(m_combo);
 664         dc.SetFont(m_useFont);
 665
 666         for ( i=0; i<n; i++ )
 667         {
 668             if ( widths[i] < 0 )
 669             {
 670                 wxCoord x = OnMeasureItemWidth(i);
 671
 672                 if ( x < 0 )
 673                 {
 674                     const wxString& text = m_strings[i];
 675
 676                     // To make sure performance won't suck in extreme scenarios,
 677                     // we'll estimate length after some arbitrary number of items
 678                     // have been checked precily.
 679                     if ( dirtyHandled < 1024 )
 680                     {
 681                         wxCoord y;
 682                         dc.GetTextExtent(text, &x, &y, 0, 0);
 683                         x += 4;
 684                     }
 685                     else
 686                     {
 687                         x = text.length() * (dc.GetCharWidth()+1);
 688                     }
 689                 }
 690
 691                 widths[i] = x;
 692
 693                 if ( x >= m_widestWidth )
 694                 {
 695                     m_widestWidth = x;
 696                     m_widestItem = (int)i;
 697                 }
 698                 else if ( (int)i == m_widestItem )
 699                 {
 700                     // Width of previously widest item has been decreased, so
 701                     // we'll have to check all to find current widest item.
 702                     doFindWidest = true;
 703                 }
 704
 705                 dirtyHandled++;
 706             }
 707         }
 708
 709         m_widthsDirty = false;
 710     }
 711
 712     if ( doFindWidest )
 713     {
 714         unsigned int i;
 715         unsigned int n = m_widths.GetCount();
 716
 717         int bestWidth = -1;
 718         int bestIndex = -1;
 719
 720         for ( i=0; i<n; i++ )
 721         {
 722             int w = m_widths[i];
 723             if ( w > bestWidth )
 724             {
 725                 bestIndex = (int)i;
 726                 bestWidth = w;
 727             }
 728         }
 729
 730         m_widestWidth = bestWidth;
 731         m_widestItem = bestIndex;
 732
 733         m_findWidest = false;
 734     }
 735 }
 736
 737 wxSize wxVListBoxComboPopup::GetAdjustedSize( int minWidth, int prefHeight, int maxHeight )
 738 {
 739     int height = 250;
 740
 741     maxHeight -= 2;  // Must take borders into account
 742
 743     if ( m_strings.GetCount() )
 744     {
 745         if ( prefHeight > 0 )
 746             height = prefHeight;
 747
 748         if ( height > maxHeight )
 749             height = maxHeight;
 750
 751         int totalHeight = GetTotalHeight(); // + 3;
 752         if ( height >= totalHeight )
 753         {
 754             height = totalHeight;
 755         }
 756         else
 757         {
 758             // Adjust height to a multiple of the height of the first item
 759             // NB: Calculations that take variable height into account
 760             //     are unnecessary.
 761             int fih = GetLineHeight(0);
 762             height -= height % fih;
 763         }
 764     }
 765     else
 766         height = 50;
 767
 768     CalcWidths();
 769
 770     // Take scrollbar into account in width calculations
 771     int widestWidth = m_widestWidth + wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
 772     return wxSize(minWidth > widestWidth ? minWidth : widestWidth,
 773                   height+2);
 774 }
 775
 776 //void wxVListBoxComboPopup::Populate( int n, const wxString choices[] )
 777 void wxVListBoxComboPopup::Populate( const wxArrayString& choices )
 778 {
 779     int i;
 780
 781     int n = choices.GetCount();
 782
 783     for ( i=0; i<n; i++ )
 784     {
 785         const wxString& item = choices.Item(i);
 786         m_strings.Add(item);
 787     }
 788
 789     m_widths.SetCount(n,-1);
 790     m_widthsDirty = true;
 791
 792     if ( IsCreated() )
 793         wxVListBox::SetItemCount(n);
 794
 795     // Sort the initial choices
 796     if ( m_combo->GetWindowStyle() & wxCB_SORT )
 797         m_strings.Sort();
 798
 799     // Find initial selection
 800     wxString strValue = m_combo->GetValue();
 801     if ( strValue.length() )
 802         m_value = m_strings.Index(strValue);
 803 }
 804
 805 // ----------------------------------------------------------------------------
 806 // wxOwnerDrawnComboBox
 807 // ----------------------------------------------------------------------------
 808
 809
 810 BEGIN_EVENT_TABLE(wxOwnerDrawnComboBox, wxComboCtrl)
 811 END_EVENT_TABLE()
 812
 813
 814 #if wxUSE_EXTENDED_RTTI
 815 IMPLEMENT_DYNAMIC_CLASS2_XTI(wxOwnerDrawnComboBox, wxComboCtrl, wxControlWithItems, "wx/odcombo.h")
 816
 817 wxBEGIN_PROPERTIES_TABLE(wxOwnerDrawnComboBox)
 818 wxEND_PROPERTIES_TABLE()
 819
 820 wxBEGIN_HANDLERS_TABLE(wxOwnerDrawnComboBox)
 821 wxEND_HANDLERS_TABLE()
 822
 823 wxCONSTRUCTOR_5( wxOwnerDrawnComboBox , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size )
 824 #else
 825 IMPLEMENT_DYNAMIC_CLASS2(wxOwnerDrawnComboBox, wxComboCtrl, wxControlWithItems)
 826 #endif
 827
 828 void wxOwnerDrawnComboBox::Init()
 829 {
 830 }
 831
 832 bool wxOwnerDrawnComboBox::Create(wxWindow *parent,
 833                                   wxWindowID id,
 834                                   const wxString& value,
 835                                   const wxPoint& pos,
 836                                   const wxSize& size,
 837                                   long style,
 838                                   const wxValidator& validator,
 839                                   const wxString& name)
 840 {
 841     return wxComboCtrl::Create(parent,id,value,pos,size,style,validator,name);
 842 }
 843
 844 wxOwnerDrawnComboBox::wxOwnerDrawnComboBox(wxWindow *parent,
 845                                            wxWindowID id,
 846                                            const wxString& value,
 847                                            const wxPoint& pos,
 848                                            const wxSize& size,
 849                                            const wxArrayString& choices,
 850                                            long style,
 851                                            const wxValidator& validator,
 852                                            const wxString& name)
 853     : wxComboCtrl()
 854 {
 855     Init();
 856
 857     Create(parent,id,value,pos,size,choices,style, validator, name);
 858 }
 859
 860 bool wxOwnerDrawnComboBox::Create(wxWindow *parent,
 861                                   wxWindowID id,
 862                                   const wxString& value,
 863                                   const wxPoint& pos,
 864                                   const wxSize& size,
 865                                   const wxArrayString& choices,
 866                                   long style,
 867                                   const wxValidator& validator,
 868                                   const wxString& name)
 869 {
 870     m_initChs = choices;
 871     //wxCArrayString chs(choices);
 872
 873     //return Create(parent, id, value, pos, size, chs.GetCount(),
 874     //              chs.GetStrings(), style, validator, name);
 875     return Create(parent, id, value, pos, size, 0,
 876                   NULL, style, validator, name);
 877 }
 878
 879 bool wxOwnerDrawnComboBox::Create(wxWindow *parent,
 880                                   wxWindowID id,
 881                                   const wxString& value,
 882                                   const wxPoint& pos,
 883                                   const wxSize& size,
 884                                   int n,
 885                                   const wxString choices[],
 886                                   long style,
 887                                   const wxValidator& validator,
 888                                   const wxString& name)
 889 {
 890
 891     if ( !Create(parent, id, value, pos, size, style,
 892                  validator, name) )
 893     {
 894         return false;
 895     }
 896
 897     int i;
 898     for ( i=0; i<n; i++ )
 899         m_initChs.Add(choices[i]);
 900
 901     return true;
 902 }
 903
 904 wxOwnerDrawnComboBox::~wxOwnerDrawnComboBox()
 905 {
 906     if ( m_popupInterface )
 907         GetVListBoxComboPopup()->ClearClientDatas();
 908 }
 909
 910 void wxOwnerDrawnComboBox::DoSetPopupControl(wxComboPopup* popup)
 911 {
 912     if ( !popup )
 913     {
 914         popup = new wxVListBoxComboPopup();
 915     }
 916
 917     wxComboCtrl::DoSetPopupControl(popup);
 918
 919     wxASSERT(popup);
 920
 921     // Add initial choices to the wxVListBox
 922     if ( !GetVListBoxComboPopup()->GetCount() )
 923     {
 924         GetVListBoxComboPopup()->Populate(m_initChs);
 925         m_initChs.Clear();
 926     }
 927 }
 928
 929 // ----------------------------------------------------------------------------
 930 // wxOwnerDrawnComboBox item manipulation methods
 931 // ----------------------------------------------------------------------------
 932
 933 void wxOwnerDrawnComboBox::DoClear()
 934 {
 935     EnsurePopupControl();
 936
 937     GetVListBoxComboPopup()->Clear();
 938
 939     SetValue(wxEmptyString);
 940 }
 941
 942 void wxOwnerDrawnComboBox::DoDeleteOneItem(unsigned int n)
 943 {
 944     wxCHECK_RET( IsValid(n), _T("invalid index in wxOwnerDrawnComboBox::Delete") );
 945
 946     if ( GetSelection() == (int) n )
 947         SetValue(wxEmptyString);
 948
 949     GetVListBoxComboPopup()->Delete(n);
 950 }
 951
 952 unsigned int wxOwnerDrawnComboBox::GetCount() const
 953 {
 954     if ( !m_popupInterface )
 955         return m_initChs.GetCount();
 956
 957     return GetVListBoxComboPopup()->GetCount();
 958 }
 959
 960 wxString wxOwnerDrawnComboBox::GetString(unsigned int n) const
 961 {
 962     wxCHECK_MSG( IsValid(n), wxEmptyString, _T("invalid index in wxOwnerDrawnComboBox::GetString") );
 963
 964     if ( !m_popupInterface )
 965         return m_initChs.Item(n);
 966
 967     return GetVListBoxComboPopup()->GetString(n);
 968 }
 969
 970 void wxOwnerDrawnComboBox::SetString(unsigned int n, const wxString& s)
 971 {
 972     EnsurePopupControl();
 973
 974     wxCHECK_RET( IsValid(n), _T("invalid index in wxOwnerDrawnComboBox::SetString") );
 975
 976     GetVListBoxComboPopup()->SetString(n,s);
 977 }
 978
 979 int wxOwnerDrawnComboBox::FindString(const wxString& s, bool bCase) const
 980 {
 981     if ( !m_popupInterface )
 982         return m_initChs.Index(s, bCase);
 983
 984     return GetVListBoxComboPopup()->FindString(s, bCase);
 985 }
 986
 987 void wxOwnerDrawnComboBox::Select(int n)
 988 {
 989     EnsurePopupControl();
 990
 991     wxCHECK_RET( (n == wxNOT_FOUND) || IsValid(n), _T("invalid index in wxOwnerDrawnComboBox::Select") );
 992
 993     GetVListBoxComboPopup()->SetSelection(n);
 994
 995     wxString str;
 996     if ( n >= 0 )
 997         str = GetVListBoxComboPopup()->GetString(n);
 998
 999     // Refresh text portion in control
1000     if ( m_text )
1001         m_text->SetValue( str );
1002     else
1003         m_valueString = str;
1004
1005     Refresh();
1006 }
1007
1008 int wxOwnerDrawnComboBox::GetSelection() const
1009 {
1010     if ( !m_popupInterface )
1011         return m_initChs.Index(m_valueString);
1012
1013     return GetVListBoxComboPopup()->GetSelection();
1014 }
1015
1016 int wxOwnerDrawnComboBox::DoInsertItems(const wxArrayStringsAdapter& items,
1017                                         unsigned int pos,
1018                                         void **clientData,
1019                                         wxClientDataType type)
1020 {
1021     EnsurePopupControl();
1022
1023     const unsigned int count = items.GetCount();
1024     for( unsigned int i = 0; i < count; ++i, ++pos )
1025     {
1026         GetVListBoxComboPopup()->Insert(items[i], pos);
1027         AssignNewItemClientData(pos, clientData, i, type);
1028     }
1029
1030     return pos - 1;
1031 }
1032
1033 void wxOwnerDrawnComboBox::DoSetItemClientData(unsigned int n, void* clientData)
1034 {
1035     EnsurePopupControl();
1036
1037     GetVListBoxComboPopup()->SetItemClientData(n, clientData,
1038                                                GetClientDataType());
1039 }
1040
1041 void* wxOwnerDrawnComboBox::DoGetItemClientData(unsigned int n) const
1042 {
1043     if ( !m_popupInterface )
1044         return NULL;
1045
1046     return GetVListBoxComboPopup()->GetItemClientData(n);
1047 }
1048
1049 // ----------------------------------------------------------------------------
1050 // wxOwnerDrawnComboBox item drawing and measuring default implementations
1051 // ----------------------------------------------------------------------------
1052
1053 void wxOwnerDrawnComboBox::OnDrawItem( wxDC& dc,
1054                                        const wxRect& rect,
1055                                        int item,
1056                                        int flags ) const
1057 {
1058     if ( flags & wxODCB_PAINTING_CONTROL )
1059     {
1060         dc.DrawText( GetValue(),
1061                      rect.x + GetTextIndent(),
1062                      (rect.height-dc.GetCharHeight())/2 + rect.y );
1063     }
1064     else
1065     {
1066         dc.DrawText( GetVListBoxComboPopup()->GetString(item), rect.x + 2, rect.y );
1067     }
1068 }
1069
1070 wxCoord wxOwnerDrawnComboBox::OnMeasureItem( size_t WXUNUSED(item) ) const
1071 {
1072     return -1;
1073 }
1074
1075 wxCoord wxOwnerDrawnComboBox::OnMeasureItemWidth( size_t WXUNUSED(item) ) const
1076 {
1077     return -1;
1078 }
1079
1080 void wxOwnerDrawnComboBox::OnDrawBackground(wxDC& dc,
1081                                             const wxRect& rect,
1082                                             int WXUNUSED(item),
1083                                             int flags) const
1084 {
1085     // We need only to explicitly draw background for items
1086     // that should have selected background. Also, call PrepareBackground
1087     // always when painting the control so that clipping is done properly.
1088
1089     if ( (flags & wxODCB_PAINTING_SELECTED) ||
1090          ((flags & wxODCB_PAINTING_CONTROL) && HasFlag(wxCB_READONLY)) )
1091     {
1092         int bgFlags = wxCONTROL_SELECTED;
1093
1094         if ( !(flags & wxODCB_PAINTING_CONTROL) )
1095             bgFlags |= wxCONTROL_ISSUBMENU;
1096
1097         PrepareBackground(dc, rect, bgFlags);
1098     }
1099 }
1100
1101 #endif // wxUSE_ODCOMBOBOX