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_CHAR(wxVListBoxComboPopup::OnChar)
  58     EVT_LEFT_UP(wxVListBoxComboPopup::OnLeftClick)
  59 END_EVENT_TABLE()
  60
  61
  62 void wxVListBoxComboPopup::Init()
  63 {
  64     m_widestWidth = 0;
  65     m_widestItem = -1;
  66     m_widthsDirty = false;
  67     m_findWidest = false;
  68     m_itemHeight = 0;
  69     m_value = -1;
  70     m_itemHover = -1;
  71     m_clientDataItemsType = wxClientData_None;
  72     m_partialCompletionString = wxEmptyString;
  73 }
  74
  75 bool wxVListBoxComboPopup::Create(wxWindow* parent)
  76 {
  77     if ( !wxVListBox::Create(parent,
  78                              wxID_ANY,
  79                              wxDefaultPosition,
  80                              wxDefaultSize,
  81                              wxBORDER_SIMPLE | wxLB_INT_HEIGHT | wxWANTS_CHARS) )
  82         return false;
  83
  84     m_useFont = m_combo->GetFont();
  85
  86     wxVListBox::SetItemCount(m_strings.GetCount());
  87
  88     // TODO: Move this to SetFont
  89     m_itemHeight = GetCharHeight() + 0;
  90
  91     return true;
  92 }
  93
  94 wxVListBoxComboPopup::~wxVListBoxComboPopup()
  95 {
  96     Clear();
  97 }
  98
  99 void wxVListBoxComboPopup::SetFocus()
 100 {
 101     // Suppress SetFocus() warning by simply not calling it. This combo popup
 102     // has already been designed with the assumption that SetFocus() may not
 103     // do anything useful, so it really doesn't need to be called.
 104 #ifdef __WXMSW__
 105     //
 106 #else
 107     wxVListBox::SetFocus();
 108 #endif
 109 }
 110
 111 bool wxVListBoxComboPopup::LazyCreate()
 112 {
 113     // NB: There is a bug with wxVListBox that can be avoided by creating
 114     //     it later (bug causes empty space to be shown if initial selection
 115     //     is at the end of a list longer than the control can show at once).
 116     return true;
 117 }
 118
 119 // paint the control itself
 120 void wxVListBoxComboPopup::PaintComboControl( wxDC& dc, const wxRect& rect )
 121 {
 122     if ( !(m_combo->GetWindowStyle() & wxODCB_STD_CONTROL_PAINT) )
 123     {
 124         int flags = wxODCB_PAINTING_CONTROL;
 125
 126         if ( m_combo->ShouldDrawFocus() )
 127             flags |= wxODCB_PAINTING_SELECTED;
 128
 129         OnDrawBg(dc, rect, m_value, flags);
 130
 131         if ( m_value >= 0 )
 132         {
 133             OnDrawItem(dc,rect,m_value,flags);
 134             return;
 135         }
 136     }
 137
 138     wxComboPopup::PaintComboControl(dc,rect);
 139 }
 140
 141 void wxVListBoxComboPopup::OnDrawItem(wxDC& dc, const wxRect& rect, size_t n) const
 142 {
 143     // TODO: Maybe this code could be moved to wxVListBox::OnPaint?
 144     dc.SetFont(m_useFont);
 145
 146     int flags = 0;
 147
 148     // Set correct text colour for selected items
 149     if ( wxVListBox::GetSelection() == (int) n )
 150     {
 151         dc.SetTextForeground( wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT) );
 152         flags |= wxODCB_PAINTING_SELECTED;
 153     }
 154     else
 155     {
 156         dc.SetTextForeground( wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT) );
 157     }
 158
 159     OnDrawItem(dc,rect,(int)n,flags);
 160 }
 161
 162 wxCoord wxVListBoxComboPopup::OnMeasureItem(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     wxCoord h = combo->OnMeasureItem(n);
 170     if ( h < 0 )
 171         h = m_itemHeight;
 172     return h;
 173 }
 174
 175 wxCoord wxVListBoxComboPopup::OnMeasureItemWidth(size_t n) 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     return combo->OnMeasureItemWidth(n);
 183 }
 184
 185 void wxVListBoxComboPopup::OnDrawBg( wxDC& dc,
 186                                      const wxRect& rect,
 187                                      int item,
 188                                      int flags ) const
 189 {
 190     wxOwnerDrawnComboBox* combo = (wxOwnerDrawnComboBox*) m_combo;
 191
 192     wxASSERT_MSG( combo->IsKindOf(CLASSINFO(wxOwnerDrawnComboBox)),
 193                   wxT("you must subclass wxVListBoxComboPopup for drawing and measuring methods") );
 194
 195     if ( IsCurrent((size_t)item) && !(flags & wxODCB_PAINTING_CONTROL) )
 196         flags |= wxODCB_PAINTING_SELECTED;
 197
 198     combo->OnDrawBackground(dc,rect,item,flags);
 199 }
 200
 201 void wxVListBoxComboPopup::OnDrawBackground(wxDC& dc, const wxRect& rect, size_t n) const
 202 {
 203     OnDrawBg(dc,rect,(int)n,0);
 204 }
 205
 206 // This is called from wxVListBoxComboPopup::OnDrawItem, with text colour and font prepared
 207 void wxVListBoxComboPopup::OnDrawItem( wxDC& dc, const wxRect& rect, int item, int flags ) const
 208 {
 209     wxOwnerDrawnComboBox* combo = (wxOwnerDrawnComboBox*) m_combo;
 210
 211     wxASSERT_MSG( combo->IsKindOf(CLASSINFO(wxOwnerDrawnComboBox)),
 212                   wxT("you must subclass wxVListBoxComboPopup for drawing and measuring methods") );
 213
 214     combo->OnDrawItem(dc,rect,item,flags);
 215 }
 216
 217 void wxVListBoxComboPopup::DismissWithEvent()
 218 {
 219     StopPartialCompletion();
 220
 221     int selection = wxVListBox::GetSelection();
 222
 223     Dismiss();
 224
 225     if ( selection != wxNOT_FOUND )
 226         m_stringValue = m_strings[selection];
 227     else
 228         m_stringValue = wxEmptyString;
 229
 230     if ( m_stringValue != m_combo->GetValue() )
 231         m_combo->SetValueWithEvent(m_stringValue);
 232
 233     m_value = selection;
 234
 235     SendComboBoxEvent(selection);
 236 }
 237
 238 void wxVListBoxComboPopup::SendComboBoxEvent( int selection )
 239 {
 240     wxCommandEvent evt(wxEVT_COMMAND_COMBOBOX_SELECTED,m_combo->GetId());
 241
 242     evt.SetEventObject(m_combo);
 243
 244     evt.SetInt(selection);
 245
 246     // Set client data, if any
 247     if ( selection >= 0 && (int)m_clientDatas.GetCount() > selection )
 248     {
 249         void* clientData = m_clientDatas[selection];
 250         if ( m_clientDataItemsType == wxClientData_Object )
 251             evt.SetClientObject((wxClientData*)clientData);
 252         else
 253             evt.SetClientData(clientData);
 254     }
 255
 256     m_combo->GetEventHandler()->AddPendingEvent(evt);
 257 }
 258
 259 // returns true if key was consumed
 260 bool wxVListBoxComboPopup::HandleKey( int keycode, bool saturate, wxChar keychar )
 261 {
 262     const int itemCount = GetCount();
 263
 264     // keys do nothing in the empty control and returning immediately avoids
 265     // using invalid indices below
 266     if ( !itemCount )
 267         return false;
 268
 269     int value = m_value;
 270     int comboStyle = m_combo->GetWindowStyle();
 271
 272     if ( keychar > 0 )
 273     {
 274         // we have character equivalent of the keycode; filter out these that
 275         // are not printable characters
 276         if ( !wxIsprint(keychar) )
 277             keychar = 0;
 278     }
 279
 280     if ( keycode == WXK_DOWN || keycode == WXK_NUMPAD_DOWN || keycode == WXK_RIGHT )
 281     {
 282         value++;
 283         StopPartialCompletion();
 284     }
 285     else if ( keycode == WXK_UP || keycode == WXK_NUMPAD_UP || keycode == WXK_LEFT )
 286     {
 287         value--;
 288         StopPartialCompletion();
 289     }
 290     else if ( keycode == WXK_PAGEDOWN || keycode == WXK_NUMPAD_PAGEDOWN )
 291     {
 292         value+=10;
 293         StopPartialCompletion();
 294     }
 295     else if ( keycode == WXK_PAGEUP || keycode == WXK_NUMPAD_PAGEUP )
 296     {
 297         value-=10;
 298         StopPartialCompletion();
 299     }
 300     else if ( keycode == WXK_HOME || keycode == WXK_NUMPAD_HOME )
 301     {
 302         value=0;
 303         StopPartialCompletion();
 304     }
 305     else if ( keycode == WXK_END || keycode == WXK_NUMPAD_END )
 306     {
 307         value=itemCount-1;
 308         StopPartialCompletion();
 309     }
 310     else if ( keychar && (comboStyle & wxCB_READONLY) )
 311     {
 312         // Try partial completion
 313
 314         // find the new partial completion string
 315 #if wxUSE_TIMER
 316         if (m_partialCompletionTimer.IsRunning())
 317             m_partialCompletionString+=wxString(keychar);
 318         else
 319 #endif // wxUSE_TIMER
 320             m_partialCompletionString=wxString(keychar);
 321
 322         // now search through the values to see if this is found
 323         int found = -1;
 324         unsigned int length=m_partialCompletionString.length();
 325         int i;
 326         for (i=0; i<itemCount; i++)
 327         {
 328             wxString item=GetString(i);
 329             if (( item.length() >= length) && (!  m_partialCompletionString.CmpNoCase(item.Left(length))))
 330             {
 331                 found=i;
 332                 break;
 333             }
 334         }
 335
 336         if (found<0)
 337         {
 338             StopPartialCompletion();
 339             ::wxBell();
 340             return true; // to stop the first value being set
 341         }
 342         else
 343         {
 344             value=i;
 345 #if wxUSE_TIMER
 346             m_partialCompletionTimer.Start(wxODCB_PARTIAL_COMPLETION_TIME, true);
 347 #endif // wxUSE_TIMER
 348         }
 349     }
 350     else
 351         return false;
 352
 353     if ( saturate )
 354     {
 355         if ( value >= itemCount )
 356             value = itemCount - 1;
 357         else if ( value < 0 )
 358             value = 0;
 359     }
 360     else
 361     {
 362         if ( value >= itemCount )
 363             value -= itemCount;
 364         else if ( value < 0 )
 365             value += itemCount;
 366     }
 367
 368     if ( value == m_value )
 369         // Even if value was same, don't skip the event
 370         // (good for consistency)
 371         return true;
 372
 373     m_value = value;
 374
 375     if ( value >= 0 )
 376         m_combo->SetValue(m_strings[value]);
 377
 378     SendComboBoxEvent(m_value);
 379
 380     return true;
 381 }
 382
 383 // stop partial completion
 384 void wxVListBoxComboPopup::StopPartialCompletion()
 385 {
 386     m_partialCompletionString = wxEmptyString;
 387 #if wxUSE_TIMER
 388     m_partialCompletionTimer.Stop();
 389 #endif // wxUSE_TIMER
 390 }
 391
 392 void wxVListBoxComboPopup::OnComboDoubleClick()
 393 {
 394     // Cycle on dclick (disable saturation to allow true cycling).
 395     if ( !::wxGetKeyState(WXK_SHIFT) )
 396         HandleKey(WXK_DOWN,false);
 397     else
 398         HandleKey(WXK_UP,false);
 399 }
 400
 401 void wxVListBoxComboPopup::OnComboKeyEvent( wxKeyEvent& event )
 402 {
 403     // Saturated key movement on
 404     if ( !HandleKey(event.GetKeyCode(), true) )
 405         event.Skip();
 406 }
 407
 408 void wxVListBoxComboPopup::OnComboCharEvent( wxKeyEvent& event )
 409 {
 410     // unlike in OnComboKeyEvent, wxEVT_CHAR contains meaningful
 411     // printable character information, so pass it
 412 #if wxUSE_UNICODE
 413     const wxChar charcode = event.GetUnicodeKey();
 414 #else
 415     const wxChar charcode = (wxChar)event.GetKeyCode();
 416 #endif
 417
 418     if ( !HandleKey(event.GetKeyCode(), true, charcode) )
 419         event.Skip();
 420 }
 421
 422 void wxVListBoxComboPopup::OnPopup()
 423 {
 424     // *must* set value after size is set (this is because of a vlbox bug)
 425     wxVListBox::SetSelection(m_value);
 426 }
 427
 428 void wxVListBoxComboPopup::OnMouseMove(wxMouseEvent& event)
 429 {
 430     event.Skip();
 431
 432     // Move selection to cursor if it is inside the popup
 433
 434     int y = event.GetPosition().y;
 435     int fromBottom = GetClientSize().y - y;
 436
 437     // Since in any case we need to find out if the last item is only
 438     // partially visible, we might just as well replicate the HitTest
 439     // loop here.
 440     const size_t lineMax = GetVisibleEnd();
 441     for ( size_t line = GetVisibleBegin(); line < lineMax; line++ )
 442     {
 443         y -= OnGetRowHeight(line);
 444         if ( y < 0 )
 445         {
 446             // Only change selection if item is fully visible
 447             if ( (y + fromBottom) >= 0 )
 448             {
 449                 wxVListBox::SetSelection((int)line);
 450                 return;
 451             }
 452         }
 453     }
 454 }
 455
 456 void wxVListBoxComboPopup::OnLeftClick(wxMouseEvent& WXUNUSED(event))
 457 {
 458     DismissWithEvent();
 459 }
 460
 461 void wxVListBoxComboPopup::OnKey(wxKeyEvent& event)
 462 {
 463     // Hide popup if certain key or key combination was pressed
 464     if ( m_combo->IsKeyPopupToggle(event) )
 465     {
 466         StopPartialCompletion();
 467         Dismiss();
 468     }
 469     else if ( event.AltDown() )
 470     {
 471         // On both wxGTK and wxMSW, pressing Alt down seems to
 472         // completely freeze things in popup (ie. arrow keys and
 473         // enter won't work).
 474         return;
 475     }
 476     // Select item if ENTER is pressed
 477     else if ( event.GetKeyCode() == WXK_RETURN || event.GetKeyCode() == WXK_NUMPAD_ENTER )
 478     {
 479         DismissWithEvent();
 480     }
 481     else
 482     {
 483         // completion is handled in OnChar() below
 484         event.Skip();
 485     }
 486 }
 487
 488 void wxVListBoxComboPopup::OnChar(wxKeyEvent& event)
 489 {
 490     if ( m_combo->GetWindowStyle() & wxCB_READONLY )
 491     {
 492         // Process partial completion key codes here, but not the arrow keys as
 493         // the base class will do that for us
 494 #if wxUSE_UNICODE
 495         const wxChar charcode = event.GetUnicodeKey();
 496 #else
 497         const wxChar charcode = (wxChar)event.GetKeyCode();
 498 #endif
 499         if ( wxIsprint(charcode) )
 500         {
 501             OnComboCharEvent(event);
 502             SetSelection(m_value); // ensure the highlight bar moves
 503             return; // don't skip the event
 504         }
 505     }
 506
 507     event.Skip();
 508 }
 509
 510 void wxVListBoxComboPopup::Insert( const wxString& item, int pos )
 511 {
 512     // Need to change selection?
 513     wxString strValue;
 514     if ( !(m_combo->GetWindowStyle() & wxCB_READONLY) &&
 515          m_combo->GetValue() == item )
 516     {
 517         m_value = pos;
 518     }
 519
 520     m_strings.Insert(item,pos);
 521     if ( (int)m_clientDatas.size() >= pos )
 522         m_clientDatas.Insert(NULL, pos);
 523
 524     m_widths.Insert(-1,pos);
 525     m_widthsDirty = true;
 526
 527     if ( IsCreated() )
 528         wxVListBox::SetItemCount( wxVListBox::GetItemCount()+1 );
 529 }
 530
 531 int wxVListBoxComboPopup::Append(const wxString& item)
 532 {
 533     int pos = (int)m_strings.GetCount();
 534
 535     if ( m_combo->GetWindowStyle() & wxCB_SORT )
 536     {
 537         // Find position
 538         // TODO: Could be optimized with binary search
 539         wxArrayString strings = m_strings;
 540         unsigned int i;
 541
 542         for ( i=0; i<strings.GetCount(); i++ )
 543         {
 544             if ( item.CmpNoCase(strings.Item(i)) < 0 )
 545             {
 546                 pos = (int)i;
 547                 break;
 548             }
 549         }
 550     }
 551
 552     Insert(item,pos);
 553
 554     return pos;
 555 }
 556
 557 void wxVListBoxComboPopup::Clear()
 558 {
 559     wxASSERT(m_combo);
 560
 561     m_strings.Empty();
 562     m_widths.Empty();
 563
 564     m_widestWidth = 0;
 565     m_widestItem = -1;
 566
 567     ClearClientDatas();
 568
 569     m_value = wxNOT_FOUND;
 570
 571     if ( IsCreated() )
 572         wxVListBox::SetItemCount(0);
 573 }
 574
 575 void wxVListBoxComboPopup::ClearClientDatas()
 576 {
 577     if ( m_clientDataItemsType == wxClientData_Object )
 578     {
 579         size_t i;
 580         for ( i=0; i<m_clientDatas.GetCount(); i++ )
 581             delete (wxClientData*) m_clientDatas[i];
 582     }
 583
 584     m_clientDatas.Empty();
 585 }
 586
 587 void wxVListBoxComboPopup::SetItemClientData( unsigned int n,
 588                                               void* clientData,
 589                                               wxClientDataType clientDataItemsType )
 590 {
 591     // It should be sufficient to update this variable only here
 592     m_clientDataItemsType = clientDataItemsType;
 593
 594     m_clientDatas[n] = clientData;
 595
 596     ItemWidthChanged(n);
 597 }
 598
 599 void* wxVListBoxComboPopup::GetItemClientData(unsigned int n) const
 600 {
 601     if ( m_clientDatas.GetCount() > n )
 602         return m_clientDatas[n];
 603
 604     return NULL;
 605 }
 606
 607 void wxVListBoxComboPopup::Delete( unsigned int item )
 608 {
 609     // Remove client data, if set
 610     if ( m_clientDatas.GetCount() )
 611     {
 612         if ( m_clientDataItemsType == wxClientData_Object )
 613             delete (wxClientData*) m_clientDatas[item];
 614
 615         m_clientDatas.RemoveAt(item);
 616     }
 617
 618     m_strings.RemoveAt(item);
 619     m_widths.RemoveAt(item);
 620
 621     if ( (int)item == m_widestItem )
 622         m_findWidest = true;
 623
 624     int sel = GetSelection();
 625
 626     if ( IsCreated() )
 627         wxVListBox::SetItemCount( wxVListBox::GetItemCount()-1 );
 628
 629     // Fix selection
 630     if ( (int)item < sel )
 631         SetSelection(sel-1);
 632     else if ( (int)item == sel )
 633         SetSelection(wxNOT_FOUND);
 634 }
 635
 636 int wxVListBoxComboPopup::FindString(const wxString& s, bool bCase) const
 637 {
 638     return m_strings.Index(s, bCase);
 639 }
 640
 641 unsigned int wxVListBoxComboPopup::GetCount() const
 642 {
 643     return m_strings.GetCount();
 644 }
 645
 646 wxString wxVListBoxComboPopup::GetString( int item ) const
 647 {
 648     return m_strings[item];
 649 }
 650
 651 void wxVListBoxComboPopup::SetString( int item, const wxString& str )
 652 {
 653     m_strings[item] = str;
 654     ItemWidthChanged(item);
 655 }
 656
 657 wxString wxVListBoxComboPopup::GetStringValue() const
 658 {
 659     return m_stringValue;
 660 }
 661
 662 void wxVListBoxComboPopup::SetSelection( int item )
 663 {
 664     wxCHECK_RET( item == wxNOT_FOUND || ((unsigned int)item < GetCount()),
 665                  wxT("invalid index in wxVListBoxComboPopup::SetSelection") );
 666
 667     m_value = item;
 668
 669     if ( item >= 0 )
 670         m_stringValue = m_strings[item];
 671     else
 672         m_stringValue = wxEmptyString;
 673
 674     if ( IsCreated() )
 675         wxVListBox::SetSelection(item);
 676 }
 677
 678 int wxVListBoxComboPopup::GetSelection() const
 679 {
 680     return m_value;
 681 }
 682
 683 void wxVListBoxComboPopup::SetStringValue( const wxString& value )
 684 {
 685     int index = m_strings.Index(value);
 686
 687     m_stringValue = value;
 688
 689     if ( index >= 0 && index < (int)wxVListBox::GetItemCount() )
 690     {
 691         wxVListBox::SetSelection(index);
 692         m_value = index;
 693     }
 694 }
 695
 696 void wxVListBoxComboPopup::CalcWidths()
 697 {
 698     bool doFindWidest = m_findWidest;
 699
 700     // Measure items with dirty width.
 701     if ( m_widthsDirty )
 702     {
 703         unsigned int i;
 704         unsigned int n = m_widths.GetCount();
 705         int dirtyHandled = 0;
 706         wxArrayInt& widths = m_widths;
 707
 708         // I think using wxDC::GetTextExtent is faster than
 709         // wxWindow::GetTextExtent (assuming same dc is used
 710         // for all calls, as we do here).
 711         wxClientDC dc(m_combo);
 712         dc.SetFont(m_useFont);
 713
 714         for ( i=0; i<n; i++ )
 715         {
 716             if ( widths[i] < 0 )
 717             {
 718                 wxCoord x = OnMeasureItemWidth(i);
 719
 720                 if ( x < 0 )
 721                 {
 722                     const wxString& text = m_strings[i];
 723
 724                     // To make sure performance won't suck in extreme scenarios,
 725                     // we'll estimate length after some arbitrary number of items
 726                     // have been checked precily.
 727                     if ( dirtyHandled < 1024 )
 728                     {
 729                         wxCoord y;
 730                         dc.GetTextExtent(text, &x, &y, 0, 0);
 731                         x += 4;
 732                     }
 733                     else
 734                     {
 735                         x = text.length() * (dc.GetCharWidth()+1);
 736                     }
 737                 }
 738
 739                 widths[i] = x;
 740
 741                 if ( x >= m_widestWidth )
 742                 {
 743                     m_widestWidth = x;
 744                     m_widestItem = (int)i;
 745                 }
 746                 else if ( (int)i == m_widestItem )
 747                 {
 748                     // Width of previously widest item has been decreased, so
 749                     // we'll have to check all to find current widest item.
 750                     doFindWidest = true;
 751                 }
 752
 753                 dirtyHandled++;
 754             }
 755         }
 756
 757         m_widthsDirty = false;
 758     }
 759
 760     if ( doFindWidest )
 761     {
 762         unsigned int i;
 763         unsigned int n = m_widths.GetCount();
 764
 765         int bestWidth = -1;
 766         int bestIndex = -1;
 767
 768         for ( i=0; i<n; i++ )
 769         {
 770             int w = m_widths[i];
 771             if ( w > bestWidth )
 772             {
 773                 bestIndex = (int)i;
 774                 bestWidth = w;
 775             }
 776         }
 777
 778         m_widestWidth = bestWidth;
 779         m_widestItem = bestIndex;
 780
 781         m_findWidest = false;
 782     }
 783 }
 784
 785 wxSize wxVListBoxComboPopup::GetAdjustedSize( int minWidth, int prefHeight, int maxHeight )
 786 {
 787     int height = 250;
 788
 789     maxHeight -= 2;  // Must take borders into account
 790
 791     if ( m_strings.GetCount() )
 792     {
 793         if ( prefHeight > 0 )
 794             height = prefHeight;
 795
 796         if ( height > maxHeight )
 797             height = maxHeight;
 798
 799         int totalHeight = GetTotalHeight(); // + 3;
 800
 801         // Take borders into account on Mac or scrollbars always appear
 802 #if defined(__WXMAC__)
 803         totalHeight += 2;
 804 #endif
 805         if ( height >= totalHeight )
 806         {
 807             height = totalHeight;
 808         }
 809         else
 810         {
 811             // Adjust height to a multiple of the height of the first item
 812             // NB: Calculations that take variable height into account
 813             //     are unnecessary.
 814             int fih = GetLineHeight(0);
 815             height -= height % fih;
 816         }
 817     }
 818     else
 819         height = 50;
 820
 821     CalcWidths();
 822
 823     // Take scrollbar into account in width calculations
 824     int widestWidth = m_widestWidth + wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
 825     return wxSize(minWidth > widestWidth ? minWidth : widestWidth,
 826                   height+2);
 827 }
 828
 829 //void wxVListBoxComboPopup::Populate( int n, const wxString choices[] )
 830 void wxVListBoxComboPopup::Populate( const wxArrayString& choices )
 831 {
 832     int i;
 833
 834     int n = choices.GetCount();
 835
 836     for ( i=0; i<n; i++ )
 837     {
 838         const wxString& item = choices.Item(i);
 839         m_strings.Add(item);
 840     }
 841
 842     m_widths.SetCount(n,-1);
 843     m_widthsDirty = true;
 844
 845     if ( IsCreated() )
 846         wxVListBox::SetItemCount(n);
 847
 848     // Sort the initial choices
 849     if ( m_combo->GetWindowStyle() & wxCB_SORT )
 850         m_strings.Sort();
 851
 852     // Find initial selection
 853     wxString strValue = m_combo->GetValue();
 854     if ( strValue.length() )
 855         m_value = m_strings.Index(strValue);
 856 }
 857
 858 // ----------------------------------------------------------------------------
 859 // wxOwnerDrawnComboBox
 860 // ----------------------------------------------------------------------------
 861
 862
 863 BEGIN_EVENT_TABLE(wxOwnerDrawnComboBox, wxComboCtrl)
 864 END_EVENT_TABLE()
 865
 866
 867 #if wxUSE_EXTENDED_RTTI
 868 IMPLEMENT_DYNAMIC_CLASS2_XTI(wxOwnerDrawnComboBox, wxComboCtrl, wxControlWithItems, "wx/odcombo.h")
 869
 870 wxBEGIN_PROPERTIES_TABLE(wxOwnerDrawnComboBox)
 871 wxEND_PROPERTIES_TABLE()
 872
 873 wxBEGIN_HANDLERS_TABLE(wxOwnerDrawnComboBox)
 874 wxEND_HANDLERS_TABLE()
 875
 876 wxCONSTRUCTOR_5( wxOwnerDrawnComboBox , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size )
 877 #else
 878 IMPLEMENT_DYNAMIC_CLASS2(wxOwnerDrawnComboBox, wxComboCtrl, wxControlWithItems)
 879 #endif
 880
 881 void wxOwnerDrawnComboBox::Init()
 882 {
 883 }
 884
 885 bool wxOwnerDrawnComboBox::Create(wxWindow *parent,
 886                                   wxWindowID id,
 887                                   const wxString& value,
 888                                   const wxPoint& pos,
 889                                   const wxSize& size,
 890                                   long style,
 891                                   const wxValidator& validator,
 892                                   const wxString& name)
 893 {
 894     return wxComboCtrl::Create(parent,id,value,pos,size,style,validator,name);
 895 }
 896
 897 wxOwnerDrawnComboBox::wxOwnerDrawnComboBox(wxWindow *parent,
 898                                            wxWindowID id,
 899                                            const wxString& value,
 900                                            const wxPoint& pos,
 901                                            const wxSize& size,
 902                                            const wxArrayString& choices,
 903                                            long style,
 904                                            const wxValidator& validator,
 905                                            const wxString& name)
 906     : wxComboCtrl()
 907 {
 908     Init();
 909
 910     Create(parent,id,value,pos,size,choices,style, validator, name);
 911 }
 912
 913 bool wxOwnerDrawnComboBox::Create(wxWindow *parent,
 914                                   wxWindowID id,
 915                                   const wxString& value,
 916                                   const wxPoint& pos,
 917                                   const wxSize& size,
 918                                   const wxArrayString& choices,
 919                                   long style,
 920                                   const wxValidator& validator,
 921                                   const wxString& name)
 922 {
 923     m_initChs = choices;
 924     //wxCArrayString chs(choices);
 925
 926     //return Create(parent, id, value, pos, size, chs.GetCount(),
 927     //              chs.GetStrings(), style, validator, name);
 928     return Create(parent, id, value, pos, size, 0,
 929                   NULL, style, validator, name);
 930 }
 931
 932 bool wxOwnerDrawnComboBox::Create(wxWindow *parent,
 933                                   wxWindowID id,
 934                                   const wxString& value,
 935                                   const wxPoint& pos,
 936                                   const wxSize& size,
 937                                   int n,
 938                                   const wxString choices[],
 939                                   long style,
 940                                   const wxValidator& validator,
 941                                   const wxString& name)
 942 {
 943
 944     if ( !Create(parent, id, value, pos, size, style,
 945                  validator, name) )
 946     {
 947         return false;
 948     }
 949
 950     int i;
 951     for ( i=0; i<n; i++ )
 952         m_initChs.Add(choices[i]);
 953
 954     return true;
 955 }
 956
 957 wxOwnerDrawnComboBox::~wxOwnerDrawnComboBox()
 958 {
 959     if ( m_popupInterface )
 960         GetVListBoxComboPopup()->ClearClientDatas();
 961 }
 962
 963 void wxOwnerDrawnComboBox::DoSetPopupControl(wxComboPopup* popup)
 964 {
 965     if ( !popup )
 966     {
 967         popup = new wxVListBoxComboPopup();
 968     }
 969
 970     wxComboCtrl::DoSetPopupControl(popup);
 971
 972     wxASSERT(popup);
 973
 974     // Add initial choices to the wxVListBox
 975     if ( !GetVListBoxComboPopup()->GetCount() )
 976     {
 977         GetVListBoxComboPopup()->Populate(m_initChs);
 978         m_initChs.Clear();
 979     }
 980 }
 981
 982 // ----------------------------------------------------------------------------
 983 // wxOwnerDrawnComboBox item manipulation methods
 984 // ----------------------------------------------------------------------------
 985
 986 void wxOwnerDrawnComboBox::DoClear()
 987 {
 988     EnsurePopupControl();
 989
 990     GetVListBoxComboPopup()->Clear();
 991
 992     SetValue(wxEmptyString);
 993 }
 994
 995 void wxOwnerDrawnComboBox::DoDeleteOneItem(unsigned int n)
 996 {
 997     wxCHECK_RET( IsValid(n), wxT("invalid index in wxOwnerDrawnComboBox::Delete") );
 998
 999     if ( GetSelection() == (int) n )
1000         SetValue(wxEmptyString);
1001
1002     GetVListBoxComboPopup()->Delete(n);
1003 }
1004
1005 unsigned int wxOwnerDrawnComboBox::GetCount() const
1006 {
1007     if ( !m_popupInterface )
1008         return m_initChs.GetCount();
1009
1010     return GetVListBoxComboPopup()->GetCount();
1011 }
1012
1013 wxString wxOwnerDrawnComboBox::GetString(unsigned int n) const
1014 {
1015     wxCHECK_MSG( IsValid(n), wxEmptyString, wxT("invalid index in wxOwnerDrawnComboBox::GetString") );
1016
1017     if ( !m_popupInterface )
1018         return m_initChs.Item(n);
1019
1020     return GetVListBoxComboPopup()->GetString(n);
1021 }
1022
1023 void wxOwnerDrawnComboBox::SetString(unsigned int n, const wxString& s)
1024 {
1025     EnsurePopupControl();
1026
1027     wxCHECK_RET( IsValid(n), wxT("invalid index in wxOwnerDrawnComboBox::SetString") );
1028
1029     GetVListBoxComboPopup()->SetString(n,s);
1030 }
1031
1032 int wxOwnerDrawnComboBox::FindString(const wxString& s, bool bCase) const
1033 {
1034     if ( !m_popupInterface )
1035         return m_initChs.Index(s, bCase);
1036
1037     return GetVListBoxComboPopup()->FindString(s, bCase);
1038 }
1039
1040 void wxOwnerDrawnComboBox::Select(int n)
1041 {
1042     EnsurePopupControl();
1043
1044     wxCHECK_RET( (n == wxNOT_FOUND) || IsValid(n), wxT("invalid index in wxOwnerDrawnComboBox::Select") );
1045
1046     GetVListBoxComboPopup()->SetSelection(n);
1047
1048     wxString str;
1049     if ( n >= 0 )
1050         str = GetVListBoxComboPopup()->GetString(n);
1051
1052     // Refresh text portion in control
1053     if ( m_text )
1054         m_text->SetValue( str );
1055     else
1056         m_valueString = str;
1057
1058     Refresh();
1059 }
1060
1061 int wxOwnerDrawnComboBox::GetSelection() const
1062 {
1063     if ( !m_popupInterface )
1064         return m_initChs.Index(m_valueString);
1065
1066     return GetVListBoxComboPopup()->GetSelection();
1067 }
1068
1069 int wxOwnerDrawnComboBox::DoInsertItems(const wxArrayStringsAdapter& items,
1070                                         unsigned int pos,
1071                                         void **clientData,
1072                                         wxClientDataType type)
1073 {
1074     EnsurePopupControl();
1075
1076     const unsigned int count = items.GetCount();
1077
1078     if ( HasFlag(wxCB_SORT) )
1079     {
1080         int n = pos;
1081
1082         for ( unsigned int i = 0; i < count; ++i )
1083         {
1084             n = GetVListBoxComboPopup()->Append(items[i]);
1085             AssignNewItemClientData(n, clientData, i, type);
1086         }
1087
1088         return n;
1089     }
1090     else
1091     {
1092         for ( unsigned int i = 0; i < count; ++i, ++pos )
1093         {
1094             GetVListBoxComboPopup()->Insert(items[i], pos);
1095             AssignNewItemClientData(pos, clientData, i, type);
1096         }
1097
1098         return pos - 1;
1099     }
1100 }
1101
1102 void wxOwnerDrawnComboBox::DoSetItemClientData(unsigned int n, void* clientData)
1103 {
1104     EnsurePopupControl();
1105
1106     GetVListBoxComboPopup()->SetItemClientData(n, clientData,
1107                                                GetClientDataType());
1108 }
1109
1110 void* wxOwnerDrawnComboBox::DoGetItemClientData(unsigned int n) const
1111 {
1112     if ( !m_popupInterface )
1113         return NULL;
1114
1115     return GetVListBoxComboPopup()->GetItemClientData(n);
1116 }
1117
1118 // ----------------------------------------------------------------------------
1119 // wxOwnerDrawnComboBox item drawing and measuring default implementations
1120 // ----------------------------------------------------------------------------
1121
1122 void wxOwnerDrawnComboBox::OnDrawItem( wxDC& dc,
1123                                        const wxRect& rect,
1124                                        int item,
1125                                        int flags ) const
1126 {
1127     if ( flags & wxODCB_PAINTING_CONTROL )
1128     {
1129         wxString text;
1130
1131         if ( !ShouldUseHintText() )
1132         {
1133             text = GetValue();
1134         }
1135         else
1136         {
1137             text = GetHint();
1138             wxColour col = wxSystemSettings::GetColour(wxSYS_COLOUR_GRAYTEXT);
1139             dc.SetTextForeground(col);
1140         }
1141
1142         dc.DrawText( text,
1143                      rect.x + GetMargins().x,
1144                      (rect.height-dc.GetCharHeight())/2 + rect.y );
1145     }
1146     else
1147     {
1148         dc.DrawText( GetVListBoxComboPopup()->GetString(item), rect.x + 2, rect.y );
1149     }
1150 }
1151
1152 wxCoord wxOwnerDrawnComboBox::OnMeasureItem( size_t WXUNUSED(item) ) const
1153 {
1154     return -1;
1155 }
1156
1157 wxCoord wxOwnerDrawnComboBox::OnMeasureItemWidth( size_t WXUNUSED(item) ) const
1158 {
1159     return -1;
1160 }
1161
1162 void wxOwnerDrawnComboBox::OnDrawBackground(wxDC& dc,
1163                                             const wxRect& rect,
1164                                             int WXUNUSED(item),
1165                                             int flags) const
1166 {
1167     // We need only to explicitly draw background for items
1168     // that should have selected background. Also, call PrepareBackground
1169     // always when painting the control so that clipping is done properly.
1170
1171     if ( (flags & wxODCB_PAINTING_SELECTED) ||
1172          ((flags & wxODCB_PAINTING_CONTROL) && HasFlag(wxCB_READONLY)) )
1173     {
1174         int bgFlags = wxCONTROL_SELECTED;
1175
1176         if ( !(flags & wxODCB_PAINTING_CONTROL) )
1177             bgFlags |= wxCONTROL_ISSUBMENU;
1178
1179         PrepareBackground(dc, rect, bgFlags);
1180     }
1181 }
1182
1183 #endif // wxUSE_ODCOMBOBOX