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     const int itemCount = GetCount();
 250
 251     // keys do nothing in the empty control and returning immediately avoids
 252     // using invalid indices below
 253     if ( !itemCount )
 254         return false;
 255
 256     int value = m_value;
 257     int comboStyle = m_combo->GetWindowStyle();
 258
 259     // this is the character equivalent of the code
 260     wxChar keychar = 0;
 261     if ( keycode < WXK_START )
 262     {
 263         if ( unicode > 0 )
 264         {
 265             if ( wxIsprint(unicode) )
 266                 keychar = unicode;
 267         }
 268         else if ( wxIsprint(keycode) )
 269         {
 270             keychar = (wxChar) keycode;
 271         }
 272     }
 273
 274     if ( keycode == WXK_DOWN || keycode == WXK_RIGHT )
 275     {
 276         value++;
 277         StopPartialCompletion();
 278     }
 279     else if ( keycode == WXK_UP || keycode == WXK_LEFT )
 280     {
 281         value--;
 282         StopPartialCompletion();
 283     }
 284     else if ( keycode == WXK_PAGEDOWN )
 285     {
 286         value+=10;
 287         StopPartialCompletion();
 288     }
 289     else if ( keycode == WXK_PAGEUP )
 290     {
 291         value-=10;
 292         StopPartialCompletion();
 293     }
 294     else if ( keychar && (comboStyle & wxCB_READONLY) )
 295     {
 296         // Try partial completion
 297
 298         // find the new partial completion string
 299 #if wxUSE_TIMER
 300         if (m_partialCompletionTimer.IsRunning())
 301             m_partialCompletionString+=wxString(keychar);
 302         else
 303 #endif // wxUSE_TIMER
 304             m_partialCompletionString=wxString(keychar);
 305
 306         // now search through the values to see if this is found
 307         int found = -1;
 308         unsigned int length=m_partialCompletionString.length();
 309         int i;
 310         for (i=0; i<itemCount; i++)
 311         {
 312             wxString item=GetString(i);
 313             if (( item.length() >= length) && (!  m_partialCompletionString.CmpNoCase(item.Left(length))))
 314             {
 315                 found=i;
 316                 break;
 317             }
 318         }
 319
 320         if (found<0)
 321         {
 322             StopPartialCompletion();
 323             ::wxBell();
 324             return true; // to stop the first value being set
 325         }
 326         else
 327         {
 328             value=i;
 329 #if wxUSE_TIMER
 330             m_partialCompletionTimer.Start(wxODCB_PARTIAL_COMPLETION_TIME, true);
 331 #endif // wxUSE_TIMER
 332         }
 333     }
 334     else
 335         return false;
 336
 337     if ( saturate )
 338     {
 339         if ( value >= itemCount )
 340             value = itemCount - 1;
 341         else if ( value < 0 )
 342             value = 0;
 343     }
 344     else
 345     {
 346         if ( value >= itemCount )
 347             value -= itemCount;
 348         else if ( value < 0 )
 349             value += itemCount;
 350     }
 351
 352     if ( value == m_value )
 353         // Even if value was same, don't skip the event
 354         // (good for consistency)
 355         return true;
 356
 357     m_value = value;
 358
 359     if ( value >= 0 )
 360         m_combo->SetValue(m_strings[value]);
 361
 362     SendComboBoxEvent(m_value);
 363
 364     return true;
 365 }
 366
 367 // stop partial completion
 368 void wxVListBoxComboPopup::StopPartialCompletion()
 369 {
 370     m_partialCompletionString = wxEmptyString;
 371 #if wxUSE_TIMER
 372     m_partialCompletionTimer.Stop();
 373 #endif // wxUSE_TIMER
 374 }
 375
 376 void wxVListBoxComboPopup::OnComboDoubleClick()
 377 {
 378     // Cycle on dclick (disable saturation to allow true cycling).
 379     if ( !::wxGetKeyState(WXK_SHIFT) )
 380         HandleKey(WXK_DOWN,false);
 381     else
 382         HandleKey(WXK_UP,false);
 383 }
 384
 385 void wxVListBoxComboPopup::OnComboKeyEvent( wxKeyEvent& event )
 386 {
 387     // Saturated key movement on
 388     if ( !HandleKey(event.GetKeyCode(),true,
 389 #if wxUSE_UNICODE
 390         event.GetUnicodeKey()
 391 #else
 392         0
 393 #endif
 394         ) )
 395         event.Skip();
 396 }
 397
 398 void wxVListBoxComboPopup::OnPopup()
 399 {
 400     // *must* set value after size is set (this is because of a vlbox bug)
 401     wxVListBox::SetSelection(m_value);
 402 }
 403
 404 void wxVListBoxComboPopup::OnMouseMove(wxMouseEvent& event)
 405 {
 406     event.Skip();
 407
 408     // Move selection to cursor if it is inside the popup
 409
 410     int y = event.GetPosition().y;
 411     int fromBottom = GetClientSize().y - y;
 412
 413     // Since in any case we need to find out if the last item is only
 414     // partially visible, we might just as well replicate the HitTest
 415     // loop here.
 416     const size_t lineMax = GetVisibleEnd();
 417     for ( size_t line = GetVisibleBegin(); line < lineMax; line++ )
 418     {
 419         y -= OnGetRowHeight(line);
 420         if ( y < 0 )
 421         {
 422             // Only change selection if item is fully visible
 423             if ( (y + fromBottom) >= 0 )
 424             {
 425                 wxVListBox::SetSelection((int)line);
 426                 return;
 427             }
 428         }
 429     }
 430 }
 431
 432 void wxVListBoxComboPopup::OnLeftClick(wxMouseEvent& WXUNUSED(event))
 433 {
 434     DismissWithEvent();
 435 }
 436
 437 void wxVListBoxComboPopup::OnKey(wxKeyEvent& event)
 438 {
 439     // Hide popup if certain key or key combination was pressed
 440     if ( m_combo->IsKeyPopupToggle(event) )
 441     {
 442         StopPartialCompletion();
 443         Dismiss();
 444     }
 445     else if ( event.AltDown() )
 446     {
 447         // On both wxGTK and wxMSW, pressing Alt down seems to
 448         // completely freeze things in popup (ie. arrow keys and
 449         // enter won't work).
 450         return;
 451     }
 452     // Select item if ENTER is pressed
 453     else if ( event.GetKeyCode() == WXK_RETURN || event.GetKeyCode() == WXK_NUMPAD_ENTER )
 454     {
 455         DismissWithEvent();
 456     }
 457     else
 458     {
 459         int comboStyle = m_combo->GetWindowStyle();
 460         int keycode = event.GetKeyCode();
 461         // Process partial completion key codes here, but not the arrow keys as the base class will do that for us
 462         if ((comboStyle & wxCB_READONLY) &&
 463             (keycode >= WXK_SPACE) && (keycode <=255) && (keycode != WXK_DELETE) && wxIsprint(keycode))
 464         {
 465             OnComboKeyEvent(event);
 466             SetSelection(m_value); // ensure the highlight bar moves
 467         }
 468         else
 469             event.Skip();
 470     }
 471 }
 472
 473 void wxVListBoxComboPopup::Insert( const wxString& item, int pos )
 474 {
 475     // Need to change selection?
 476     wxString strValue;
 477     if ( !(m_combo->GetWindowStyle() & wxCB_READONLY) &&
 478          m_combo->GetValue() == item )
 479     {
 480         m_value = pos;
 481     }
 482
 483     m_strings.Insert(item,pos);
 484     if ( (int)m_clientDatas.size() >= pos )
 485         m_clientDatas.Insert(NULL, pos);
 486
 487     m_widths.Insert(-1,pos);
 488     m_widthsDirty = true;
 489
 490     if ( IsCreated() )
 491         wxVListBox::SetItemCount( wxVListBox::GetItemCount()+1 );
 492 }
 493
 494 int wxVListBoxComboPopup::Append(const wxString& item)
 495 {
 496     int pos = (int)m_strings.GetCount();
 497
 498     if ( m_combo->GetWindowStyle() & wxCB_SORT )
 499     {
 500         // Find position
 501         // TODO: Could be optimized with binary search
 502         wxArrayString strings = m_strings;
 503         unsigned int i;
 504
 505         for ( i=0; i<strings.GetCount(); i++ )
 506         {
 507             if ( item.CmpNoCase(strings.Item(i)) < 0 )
 508             {
 509                 pos = (int)i;
 510                 break;
 511             }
 512         }
 513     }
 514
 515     Insert(item,pos);
 516
 517     return pos;
 518 }
 519
 520 void wxVListBoxComboPopup::Clear()
 521 {
 522     wxASSERT(m_combo);
 523
 524     m_strings.Empty();
 525     m_widths.Empty();
 526
 527     m_widestWidth = 0;
 528     m_widestItem = -1;
 529
 530     ClearClientDatas();
 531
 532     m_value = wxNOT_FOUND;
 533
 534     if ( IsCreated() )
 535         wxVListBox::SetItemCount(0);
 536 }
 537
 538 void wxVListBoxComboPopup::ClearClientDatas()
 539 {
 540     if ( m_clientDataItemsType == wxClientData_Object )
 541     {
 542         size_t i;
 543         for ( i=0; i<m_clientDatas.GetCount(); i++ )
 544             delete (wxClientData*) m_clientDatas[i];
 545     }
 546
 547     m_clientDatas.Empty();
 548 }
 549
 550 void wxVListBoxComboPopup::SetItemClientData( unsigned int n,
 551                                               void* clientData,
 552                                               wxClientDataType clientDataItemsType )
 553 {
 554     // It should be sufficient to update this variable only here
 555     m_clientDataItemsType = clientDataItemsType;
 556
 557     m_clientDatas[n] = clientData;
 558
 559     ItemWidthChanged(n);
 560 }
 561
 562 void* wxVListBoxComboPopup::GetItemClientData(unsigned int n) const
 563 {
 564     if ( m_clientDatas.GetCount() > n )
 565         return m_clientDatas[n];
 566
 567     return NULL;
 568 }
 569
 570 void wxVListBoxComboPopup::Delete( unsigned int item )
 571 {
 572     // Remove client data, if set
 573     if ( m_clientDatas.GetCount() )
 574     {
 575         if ( m_clientDataItemsType == wxClientData_Object )
 576             delete (wxClientData*) m_clientDatas[item];
 577
 578         m_clientDatas.RemoveAt(item);
 579     }
 580
 581     m_strings.RemoveAt(item);
 582     m_widths.RemoveAt(item);
 583
 584     if ( (int)item == m_widestItem )
 585         m_findWidest = true;
 586
 587     int sel = GetSelection();
 588
 589     if ( IsCreated() )
 590         wxVListBox::SetItemCount( wxVListBox::GetItemCount()-1 );
 591
 592     // Fix selection
 593     if ( (int)item < sel )
 594         SetSelection(sel-1);
 595     else if ( (int)item == sel )
 596         SetSelection(wxNOT_FOUND);
 597 }
 598
 599 int wxVListBoxComboPopup::FindString(const wxString& s, bool bCase) const
 600 {
 601     return m_strings.Index(s, bCase);
 602 }
 603
 604 unsigned int wxVListBoxComboPopup::GetCount() const
 605 {
 606     return m_strings.GetCount();
 607 }
 608
 609 wxString wxVListBoxComboPopup::GetString( int item ) const
 610 {
 611     return m_strings[item];
 612 }
 613
 614 void wxVListBoxComboPopup::SetString( int item, const wxString& str )
 615 {
 616     m_strings[item] = str;
 617     ItemWidthChanged(item);
 618 }
 619
 620 wxString wxVListBoxComboPopup::GetStringValue() const
 621 {
 622     return m_stringValue;
 623 }
 624
 625 void wxVListBoxComboPopup::SetSelection( int item )
 626 {
 627     wxCHECK_RET( item == wxNOT_FOUND || ((unsigned int)item < GetCount()),
 628                  wxT("invalid index in wxVListBoxComboPopup::SetSelection") );
 629
 630     m_value = item;
 631
 632     if ( item >= 0 )
 633         m_stringValue = m_strings[item];
 634     else
 635         m_stringValue = wxEmptyString;
 636
 637     if ( IsCreated() )
 638         wxVListBox::SetSelection(item);
 639 }
 640
 641 int wxVListBoxComboPopup::GetSelection() const
 642 {
 643     return m_value;
 644 }
 645
 646 void wxVListBoxComboPopup::SetStringValue( const wxString& value )
 647 {
 648     int index = m_strings.Index(value);
 649
 650     m_stringValue = value;
 651
 652     if ( index >= 0 && index < (int)wxVListBox::GetItemCount() )
 653     {
 654         wxVListBox::SetSelection(index);
 655         m_value = index;
 656     }
 657 }
 658
 659 void wxVListBoxComboPopup::CalcWidths()
 660 {
 661     bool doFindWidest = m_findWidest;
 662
 663     // Measure items with dirty width.
 664     if ( m_widthsDirty )
 665     {
 666         unsigned int i;
 667         unsigned int n = m_widths.GetCount();
 668         int dirtyHandled = 0;
 669         wxArrayInt& widths = m_widths;
 670
 671         // I think using wxDC::GetTextExtent is faster than
 672         // wxWindow::GetTextExtent (assuming same dc is used
 673         // for all calls, as we do here).
 674         wxClientDC dc(m_combo);
 675         dc.SetFont(m_useFont);
 676
 677         for ( i=0; i<n; i++ )
 678         {
 679             if ( widths[i] < 0 )
 680             {
 681                 wxCoord x = OnMeasureItemWidth(i);
 682
 683                 if ( x < 0 )
 684                 {
 685                     const wxString& text = m_strings[i];
 686
 687                     // To make sure performance won't suck in extreme scenarios,
 688                     // we'll estimate length after some arbitrary number of items
 689                     // have been checked precily.
 690                     if ( dirtyHandled < 1024 )
 691                     {
 692                         wxCoord y;
 693                         dc.GetTextExtent(text, &x, &y, 0, 0);
 694                         x += 4;
 695                     }
 696                     else
 697                     {
 698                         x = text.length() * (dc.GetCharWidth()+1);
 699                     }
 700                 }
 701
 702                 widths[i] = x;
 703
 704                 if ( x >= m_widestWidth )
 705                 {
 706                     m_widestWidth = x;
 707                     m_widestItem = (int)i;
 708                 }
 709                 else if ( (int)i == m_widestItem )
 710                 {
 711                     // Width of previously widest item has been decreased, so
 712                     // we'll have to check all to find current widest item.
 713                     doFindWidest = true;
 714                 }
 715
 716                 dirtyHandled++;
 717             }
 718         }
 719
 720         m_widthsDirty = false;
 721     }
 722
 723     if ( doFindWidest )
 724     {
 725         unsigned int i;
 726         unsigned int n = m_widths.GetCount();
 727
 728         int bestWidth = -1;
 729         int bestIndex = -1;
 730
 731         for ( i=0; i<n; i++ )
 732         {
 733             int w = m_widths[i];
 734             if ( w > bestWidth )
 735             {
 736                 bestIndex = (int)i;
 737                 bestWidth = w;
 738             }
 739         }
 740
 741         m_widestWidth = bestWidth;
 742         m_widestItem = bestIndex;
 743
 744         m_findWidest = false;
 745     }
 746 }
 747
 748 wxSize wxVListBoxComboPopup::GetAdjustedSize( int minWidth, int prefHeight, int maxHeight )
 749 {
 750     int height = 250;
 751
 752     maxHeight -= 2;  // Must take borders into account
 753
 754     if ( m_strings.GetCount() )
 755     {
 756         if ( prefHeight > 0 )
 757             height = prefHeight;
 758
 759         if ( height > maxHeight )
 760             height = maxHeight;
 761
 762         int totalHeight = GetTotalHeight(); // + 3;
 763
 764         // Take borders into account on Mac or scrollbars always appear
 765 #if defined(__WXMAC__)
 766         totalHeight += 2;
 767 #endif
 768         if ( height >= totalHeight )
 769         {
 770             height = totalHeight;
 771         }
 772         else
 773         {
 774             // Adjust height to a multiple of the height of the first item
 775             // NB: Calculations that take variable height into account
 776             //     are unnecessary.
 777             int fih = GetLineHeight(0);
 778             height -= height % fih;
 779         }
 780     }
 781     else
 782         height = 50;
 783
 784     CalcWidths();
 785
 786     // Take scrollbar into account in width calculations
 787     int widestWidth = m_widestWidth + wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
 788     return wxSize(minWidth > widestWidth ? minWidth : widestWidth,
 789                   height+2);
 790 }
 791
 792 //void wxVListBoxComboPopup::Populate( int n, const wxString choices[] )
 793 void wxVListBoxComboPopup::Populate( const wxArrayString& choices )
 794 {
 795     int i;
 796
 797     int n = choices.GetCount();
 798
 799     for ( i=0; i<n; i++ )
 800     {
 801         const wxString& item = choices.Item(i);
 802         m_strings.Add(item);
 803     }
 804
 805     m_widths.SetCount(n,-1);
 806     m_widthsDirty = true;
 807
 808     if ( IsCreated() )
 809         wxVListBox::SetItemCount(n);
 810
 811     // Sort the initial choices
 812     if ( m_combo->GetWindowStyle() & wxCB_SORT )
 813         m_strings.Sort();
 814
 815     // Find initial selection
 816     wxString strValue = m_combo->GetValue();
 817     if ( strValue.length() )
 818         m_value = m_strings.Index(strValue);
 819 }
 820
 821 // ----------------------------------------------------------------------------
 822 // wxOwnerDrawnComboBox
 823 // ----------------------------------------------------------------------------
 824
 825
 826 BEGIN_EVENT_TABLE(wxOwnerDrawnComboBox, wxComboCtrl)
 827 END_EVENT_TABLE()
 828
 829
 830 #if wxUSE_EXTENDED_RTTI
 831 IMPLEMENT_DYNAMIC_CLASS2_XTI(wxOwnerDrawnComboBox, wxComboCtrl, wxControlWithItems, "wx/odcombo.h")
 832
 833 wxBEGIN_PROPERTIES_TABLE(wxOwnerDrawnComboBox)
 834 wxEND_PROPERTIES_TABLE()
 835
 836 wxBEGIN_HANDLERS_TABLE(wxOwnerDrawnComboBox)
 837 wxEND_HANDLERS_TABLE()
 838
 839 wxCONSTRUCTOR_5( wxOwnerDrawnComboBox , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size )
 840 #else
 841 IMPLEMENT_DYNAMIC_CLASS2(wxOwnerDrawnComboBox, wxComboCtrl, wxControlWithItems)
 842 #endif
 843
 844 void wxOwnerDrawnComboBox::Init()
 845 {
 846 }
 847
 848 bool wxOwnerDrawnComboBox::Create(wxWindow *parent,
 849                                   wxWindowID id,
 850                                   const wxString& value,
 851                                   const wxPoint& pos,
 852                                   const wxSize& size,
 853                                   long style,
 854                                   const wxValidator& validator,
 855                                   const wxString& name)
 856 {
 857     return wxComboCtrl::Create(parent,id,value,pos,size,style,validator,name);
 858 }
 859
 860 wxOwnerDrawnComboBox::wxOwnerDrawnComboBox(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     : wxComboCtrl()
 870 {
 871     Init();
 872
 873     Create(parent,id,value,pos,size,choices,style, validator, name);
 874 }
 875
 876 bool wxOwnerDrawnComboBox::Create(wxWindow *parent,
 877                                   wxWindowID id,
 878                                   const wxString& value,
 879                                   const wxPoint& pos,
 880                                   const wxSize& size,
 881                                   const wxArrayString& choices,
 882                                   long style,
 883                                   const wxValidator& validator,
 884                                   const wxString& name)
 885 {
 886     m_initChs = choices;
 887     //wxCArrayString chs(choices);
 888
 889     //return Create(parent, id, value, pos, size, chs.GetCount(),
 890     //              chs.GetStrings(), style, validator, name);
 891     return Create(parent, id, value, pos, size, 0,
 892                   NULL, style, validator, name);
 893 }
 894
 895 bool wxOwnerDrawnComboBox::Create(wxWindow *parent,
 896                                   wxWindowID id,
 897                                   const wxString& value,
 898                                   const wxPoint& pos,
 899                                   const wxSize& size,
 900                                   int n,
 901                                   const wxString choices[],
 902                                   long style,
 903                                   const wxValidator& validator,
 904                                   const wxString& name)
 905 {
 906
 907     if ( !Create(parent, id, value, pos, size, style,
 908                  validator, name) )
 909     {
 910         return false;
 911     }
 912
 913     int i;
 914     for ( i=0; i<n; i++ )
 915         m_initChs.Add(choices[i]);
 916
 917     return true;
 918 }
 919
 920 wxOwnerDrawnComboBox::~wxOwnerDrawnComboBox()
 921 {
 922     if ( m_popupInterface )
 923         GetVListBoxComboPopup()->ClearClientDatas();
 924 }
 925
 926 void wxOwnerDrawnComboBox::DoSetPopupControl(wxComboPopup* popup)
 927 {
 928     if ( !popup )
 929     {
 930         popup = new wxVListBoxComboPopup();
 931     }
 932
 933     wxComboCtrl::DoSetPopupControl(popup);
 934
 935     wxASSERT(popup);
 936
 937     // Add initial choices to the wxVListBox
 938     if ( !GetVListBoxComboPopup()->GetCount() )
 939     {
 940         GetVListBoxComboPopup()->Populate(m_initChs);
 941         m_initChs.Clear();
 942     }
 943 }
 944
 945 // ----------------------------------------------------------------------------
 946 // wxOwnerDrawnComboBox item manipulation methods
 947 // ----------------------------------------------------------------------------
 948
 949 void wxOwnerDrawnComboBox::DoClear()
 950 {
 951     EnsurePopupControl();
 952
 953     GetVListBoxComboPopup()->Clear();
 954
 955     SetValue(wxEmptyString);
 956 }
 957
 958 void wxOwnerDrawnComboBox::DoDeleteOneItem(unsigned int n)
 959 {
 960     wxCHECK_RET( IsValid(n), wxT("invalid index in wxOwnerDrawnComboBox::Delete") );
 961
 962     if ( GetSelection() == (int) n )
 963         SetValue(wxEmptyString);
 964
 965     GetVListBoxComboPopup()->Delete(n);
 966 }
 967
 968 unsigned int wxOwnerDrawnComboBox::GetCount() const
 969 {
 970     if ( !m_popupInterface )
 971         return m_initChs.GetCount();
 972
 973     return GetVListBoxComboPopup()->GetCount();
 974 }
 975
 976 wxString wxOwnerDrawnComboBox::GetString(unsigned int n) const
 977 {
 978     wxCHECK_MSG( IsValid(n), wxEmptyString, wxT("invalid index in wxOwnerDrawnComboBox::GetString") );
 979
 980     if ( !m_popupInterface )
 981         return m_initChs.Item(n);
 982
 983     return GetVListBoxComboPopup()->GetString(n);
 984 }
 985
 986 void wxOwnerDrawnComboBox::SetString(unsigned int n, const wxString& s)
 987 {
 988     EnsurePopupControl();
 989
 990     wxCHECK_RET( IsValid(n), wxT("invalid index in wxOwnerDrawnComboBox::SetString") );
 991
 992     GetVListBoxComboPopup()->SetString(n,s);
 993 }
 994
 995 int wxOwnerDrawnComboBox::FindString(const wxString& s, bool bCase) const
 996 {
 997     if ( !m_popupInterface )
 998         return m_initChs.Index(s, bCase);
 999
1000     return GetVListBoxComboPopup()->FindString(s, bCase);
1001 }
1002
1003 void wxOwnerDrawnComboBox::Select(int n)
1004 {
1005     EnsurePopupControl();
1006
1007     wxCHECK_RET( (n == wxNOT_FOUND) || IsValid(n), wxT("invalid index in wxOwnerDrawnComboBox::Select") );
1008
1009     GetVListBoxComboPopup()->SetSelection(n);
1010
1011     wxString str;
1012     if ( n >= 0 )
1013         str = GetVListBoxComboPopup()->GetString(n);
1014
1015     // Refresh text portion in control
1016     if ( m_text )
1017         m_text->SetValue( str );
1018     else
1019         m_valueString = str;
1020
1021     Refresh();
1022 }
1023
1024 int wxOwnerDrawnComboBox::GetSelection() const
1025 {
1026     if ( !m_popupInterface )
1027         return m_initChs.Index(m_valueString);
1028
1029     return GetVListBoxComboPopup()->GetSelection();
1030 }
1031
1032 int wxOwnerDrawnComboBox::DoInsertItems(const wxArrayStringsAdapter& items,
1033                                         unsigned int pos,
1034                                         void **clientData,
1035                                         wxClientDataType type)
1036 {
1037     EnsurePopupControl();
1038
1039     const unsigned int count = items.GetCount();
1040
1041     if ( HasFlag(wxCB_SORT) )
1042     {
1043         int n = pos;
1044
1045         for ( unsigned int i = 0; i < count; ++i )
1046         {
1047             n = GetVListBoxComboPopup()->Append(items[i]);
1048             AssignNewItemClientData(n, clientData, i, type);
1049         }
1050
1051         return n;
1052     }
1053     else
1054     {
1055         for ( unsigned int i = 0; i < count; ++i, ++pos )
1056         {
1057             GetVListBoxComboPopup()->Insert(items[i], pos);
1058             AssignNewItemClientData(pos, clientData, i, type);
1059         }
1060
1061         return pos - 1;
1062     }
1063 }
1064
1065 void wxOwnerDrawnComboBox::DoSetItemClientData(unsigned int n, void* clientData)
1066 {
1067     EnsurePopupControl();
1068
1069     GetVListBoxComboPopup()->SetItemClientData(n, clientData,
1070                                                GetClientDataType());
1071 }
1072
1073 void* wxOwnerDrawnComboBox::DoGetItemClientData(unsigned int n) const
1074 {
1075     if ( !m_popupInterface )
1076         return NULL;
1077
1078     return GetVListBoxComboPopup()->GetItemClientData(n);
1079 }
1080
1081 // ----------------------------------------------------------------------------
1082 // wxOwnerDrawnComboBox item drawing and measuring default implementations
1083 // ----------------------------------------------------------------------------
1084
1085 void wxOwnerDrawnComboBox::OnDrawItem( wxDC& dc,
1086                                        const wxRect& rect,
1087                                        int item,
1088                                        int flags ) const
1089 {
1090     if ( flags & wxODCB_PAINTING_CONTROL )
1091     {
1092         dc.DrawText( GetValue(),
1093                      rect.x + GetMargins().x,
1094                      (rect.height-dc.GetCharHeight())/2 + rect.y );
1095     }
1096     else
1097     {
1098         dc.DrawText( GetVListBoxComboPopup()->GetString(item), rect.x + 2, rect.y );
1099     }
1100 }
1101
1102 wxCoord wxOwnerDrawnComboBox::OnMeasureItem( size_t WXUNUSED(item) ) const
1103 {
1104     return -1;
1105 }
1106
1107 wxCoord wxOwnerDrawnComboBox::OnMeasureItemWidth( size_t WXUNUSED(item) ) const
1108 {
1109     return -1;
1110 }
1111
1112 void wxOwnerDrawnComboBox::OnDrawBackground(wxDC& dc,
1113                                             const wxRect& rect,
1114                                             int WXUNUSED(item),
1115                                             int flags) const
1116 {
1117     // We need only to explicitly draw background for items
1118     // that should have selected background. Also, call PrepareBackground
1119     // always when painting the control so that clipping is done properly.
1120
1121     if ( (flags & wxODCB_PAINTING_SELECTED) ||
1122          ((flags & wxODCB_PAINTING_CONTROL) && HasFlag(wxCB_READONLY)) )
1123     {
1124         int bgFlags = wxCONTROL_SELECTED;
1125
1126         if ( !(flags & wxODCB_PAINTING_CONTROL) )
1127             bgFlags |= wxCONTROL_ISSUBMENU;
1128
1129         PrepareBackground(dc, rect, bgFlags);
1130     }
1131 }
1132
1133 #endif // wxUSE_ODCOMBOBOX