src/common/gbsizer.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        gbsizer.cpp
   3 // Purpose:     wxGridBagSizer:  A sizer that can lay out items in a grid,
   4 //              with items at specified cells, and with the option of row
   5 //              and/or column spanning
   6 //
   7 // Author:      Robin Dunn
   8 // Created:     03-Nov-2003
   9 // RCS-ID:      $Id$
  10 // Copyright:   (c) Robin Dunn
  11 // Licence:     wxWindows licence
  12 /////////////////////////////////////////////////////////////////////////////
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #ifdef __BORLANDC__
  18     #pragma hdrstop
  19 #endif
  20
  21 #include "wx/gbsizer.h"
  22
  23 //---------------------------------------------------------------------------
  24
  25 IMPLEMENT_DYNAMIC_CLASS(wxGBSizerItem, wxSizerItem)
  26 IMPLEMENT_CLASS(wxGridBagSizer, wxFlexGridSizer)
  27
  28 const wxGBSpan wxDefaultSpan;
  29
  30 //---------------------------------------------------------------------------
  31 // wxGBSizerItem
  32 //---------------------------------------------------------------------------
  33
  34 wxGBSizerItem::wxGBSizerItem( int width,
  35                               int height,
  36                               const wxGBPosition& pos,
  37                               const wxGBSpan& span,
  38                               int flag,
  39                               int border,
  40                               wxObject* userData)
  41     : wxSizerItem(width, height, 0, flag, border, userData),
  42       m_pos(pos),
  43       m_span(span),
  44       m_gbsizer(NULL)
  45 {
  46 }
  47
  48
  49 wxGBSizerItem::wxGBSizerItem( wxWindow *window,
  50                               const wxGBPosition& pos,
  51                               const wxGBSpan& span,
  52                               int flag,
  53                               int border,
  54                               wxObject* userData )
  55     : wxSizerItem(window, 0, flag, border, userData),
  56       m_pos(pos),
  57       m_span(span),
  58       m_gbsizer(NULL)
  59 {
  60 }
  61
  62
  63 wxGBSizerItem::wxGBSizerItem( wxSizer *sizer,
  64                               const wxGBPosition& pos,
  65                               const wxGBSpan& span,
  66                               int flag,
  67                               int border,
  68                               wxObject* userData )
  69     : wxSizerItem(sizer, 0, flag, border, userData),
  70       m_pos(pos),
  71       m_span(span),
  72       m_gbsizer(NULL)
  73 {
  74 }
  75
  76 wxGBSizerItem::wxGBSizerItem()
  77     : wxSizerItem(),
  78       m_pos(-1,-1),
  79       m_span(-1,-1),
  80       m_gbsizer(NULL)
  81 {
  82 }
  83
  84 //---------------------------------------------------------------------------
  85
  86
  87 void wxGBSizerItem::GetPos(int& row, int& col) const
  88 {
  89     row = m_pos.GetRow();
  90     col = m_pos.GetCol();
  91 }
  92
  93 void wxGBSizerItem::GetSpan(int& rowspan, int& colspan) const
  94 {
  95     rowspan = m_span.GetRowspan();
  96     colspan = m_span.GetColspan();
  97 }
  98
  99
 100 bool wxGBSizerItem::SetPos( const wxGBPosition& pos )
 101 {
 102     if (m_gbsizer)
 103     {
 104         wxCHECK_MSG( !m_gbsizer->CheckForIntersection(pos, m_span, this), false,
 105                  wxT("An item is already at that position") );
 106     }
 107     m_pos = pos;
 108     return true;
 109 }
 110
 111 bool wxGBSizerItem::SetSpan( const wxGBSpan& span )
 112 {
 113     if (m_gbsizer)
 114     {
 115         wxCHECK_MSG( !m_gbsizer->CheckForIntersection(m_pos, span, this), false,
 116                  wxT("An item is already at that position") );
 117     }
 118     m_span = span;
 119     return true;
 120 }
 121
 122
 123 inline bool InRange(int val, int min, int max)
 124 {
 125     return (val >= min && val <= max);
 126 }
 127
 128 bool wxGBSizerItem::Intersects(const wxGBSizerItem& other)
 129 {
 130     return Intersects(other.GetPos(), other.GetSpan());
 131 }
 132
 133 bool wxGBSizerItem::Intersects(const wxGBPosition& pos, const wxGBSpan& span)
 134 {
 135
 136     int row, col, endrow, endcol;
 137     int otherrow, othercol, otherendrow, otherendcol;
 138
 139     GetPos(row, col);
 140     GetEndPos(endrow, endcol);
 141
 142     otherrow = pos.GetRow();
 143     othercol = pos.GetCol();
 144     otherendrow = otherrow + span.GetRowspan() - 1;
 145     otherendcol = othercol + span.GetColspan() - 1;
 146
 147     // is the other item's start or end in the range of this one?
 148     if (( InRange(otherrow, row, endrow) && InRange(othercol, col, endcol) ) ||
 149         ( InRange(otherendrow, row, endrow) && InRange(otherendcol, col, endcol) ))
 150         return true;
 151
 152     // is this item's start or end in the range of the other one?
 153     if (( InRange(row, otherrow, otherendrow) && InRange(col, othercol, otherendcol) ) ||
 154         ( InRange(endrow, otherrow, otherendrow) && InRange(endcol, othercol, otherendcol) ))
 155         return true;
 156
 157     return false;
 158 }
 159
 160
 161 void wxGBSizerItem::GetEndPos(int& row, int& col)
 162 {
 163     row = m_pos.GetRow() + m_span.GetRowspan() - 1;
 164     col = m_pos.GetCol() + m_span.GetColspan() - 1;
 165 }
 166
 167
 168 //---------------------------------------------------------------------------
 169 // wxGridBagSizer
 170 //---------------------------------------------------------------------------
 171
 172 wxGridBagSizer::wxGridBagSizer(int vgap, int hgap )
 173     : wxFlexGridSizer(1, vgap, hgap),
 174       m_emptyCellSize(10,20)
 175
 176 {
 177 }
 178
 179
 180 wxSizerItem* wxGridBagSizer::Add( wxWindow *window,
 181                                   const wxGBPosition& pos, const wxGBSpan& span,
 182                                   int flag, int border,  wxObject* userData )
 183 {
 184     wxGBSizerItem* item = new wxGBSizerItem(window, pos, span, flag, border, userData);
 185     if ( Add(item) )
 186         return item;
 187     else
 188     {
 189         delete item;
 190         return (wxSizerItem*)NULL;
 191     }
 192 }
 193
 194 wxSizerItem* wxGridBagSizer::Add( wxSizer *sizer,
 195                           const wxGBPosition& pos, const wxGBSpan& span,
 196                           int flag, int border,  wxObject* userData )
 197 {
 198     wxGBSizerItem* item = new wxGBSizerItem(sizer, pos, span, flag, border, userData);
 199     if ( Add(item) )
 200         return item;
 201     else
 202     {
 203         delete item;
 204         return (wxSizerItem*)NULL;
 205     }
 206 }
 207
 208 wxSizerItem* wxGridBagSizer::Add( int width, int height,
 209                           const wxGBPosition& pos, const wxGBSpan& span,
 210                           int flag, int border,  wxObject* userData )
 211 {
 212     wxGBSizerItem* item = new wxGBSizerItem(width, height, pos, span, flag, border, userData);
 213     if ( Add(item) )
 214         return item;
 215     else
 216     {
 217         delete item;
 218         return (wxSizerItem*)NULL;
 219     }
 220 }
 221
 222 wxSizerItem* wxGridBagSizer::Add( wxGBSizerItem *item )
 223 {
 224     wxCHECK_MSG( !CheckForIntersection(item), NULL,
 225                  wxT("An item is already at that position") );
 226     m_children.Append(item);
 227     item->SetGBSizer(this);
 228     if ( item->GetWindow() )
 229         item->GetWindow()->SetContainingSizer( this );
 230
 231     return item;
 232 }
 233
 234
 235
 236 //---------------------------------------------------------------------------
 237
 238 wxSize wxGridBagSizer::GetCellSize(int row, int col) const
 239 {
 240     wxCHECK_MSG( (row < m_rows) && (col < m_cols),
 241                  wxDefaultSize,
 242                  wxT("Invalid cell."));
 243     return wxSize( m_colWidths[col], m_rowHeights[row] );
 244 }
 245
 246
 247 wxGBPosition wxGridBagSizer::GetItemPosition(wxWindow *window)
 248 {
 249     wxGBPosition badpos(-1,-1);
 250     wxGBSizerItem* item = FindItem(window);
 251     wxCHECK_MSG(item, badpos, wxT("Failed to find item."));
 252     return item->GetPos();
 253 }
 254
 255
 256 wxGBPosition wxGridBagSizer::GetItemPosition(wxSizer *sizer)
 257 {
 258     wxGBPosition badpos(-1,-1);
 259     wxGBSizerItem* item = FindItem(sizer);
 260     wxCHECK_MSG(item, badpos, wxT("Failed to find item."));
 261     return item->GetPos();
 262 }
 263
 264
 265 wxGBPosition wxGridBagSizer::GetItemPosition(size_t index)
 266 {
 267     wxGBPosition badpos(-1,-1);
 268     wxSizerItemList::compatibility_iterator node = m_children.Item( index );
 269     wxCHECK_MSG( node, badpos, _T("Failed to find item.") );
 270     wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
 271     return item->GetPos();
 272 }
 273
 274
 275
 276 bool wxGridBagSizer::SetItemPosition(wxWindow *window, const wxGBPosition& pos)
 277 {
 278     wxGBSizerItem* item = FindItem(window);
 279     wxCHECK_MSG(item, false, wxT("Failed to find item."));
 280     return item->SetPos(pos);
 281 }
 282
 283
 284 bool wxGridBagSizer::SetItemPosition(wxSizer *sizer, const wxGBPosition& pos)
 285 {
 286     wxGBSizerItem* item = FindItem(sizer);
 287     wxCHECK_MSG(item, false, wxT("Failed to find item."));
 288     return item->SetPos(pos);
 289 }
 290
 291
 292 bool wxGridBagSizer::SetItemPosition(size_t index, const wxGBPosition& pos)
 293 {
 294     wxSizerItemList::compatibility_iterator node = m_children.Item( index );
 295     wxCHECK_MSG( node, false, _T("Failed to find item.") );
 296     wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
 297     return item->SetPos(pos);
 298 }
 299
 300
 301
 302 wxGBSpan wxGridBagSizer::GetItemSpan(wxWindow *window)
 303 {
 304     wxGBSpan badspan(-1,-1);
 305     wxGBSizerItem* item = FindItem(window);
 306     wxCHECK_MSG( item, badspan, _T("Failed to find item.") );
 307     return item->GetSpan();
 308 }
 309
 310
 311 wxGBSpan wxGridBagSizer::GetItemSpan(wxSizer *sizer)
 312 {
 313     wxGBSpan badspan(-1,-1);
 314     wxGBSizerItem* item = FindItem(sizer);
 315     wxCHECK_MSG( item, badspan, _T("Failed to find item.") );
 316     return item->GetSpan();
 317 }
 318
 319
 320 wxGBSpan wxGridBagSizer::GetItemSpan(size_t index)
 321 {
 322     wxGBSpan badspan(-1,-1);
 323     wxSizerItemList::compatibility_iterator node = m_children.Item( index );
 324     wxCHECK_MSG( node, badspan, _T("Failed to find item.") );
 325     wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
 326     return item->GetSpan();
 327 }
 328
 329
 330
 331 bool wxGridBagSizer::SetItemSpan(wxWindow *window, const wxGBSpan& span)
 332 {
 333     wxGBSizerItem* item = FindItem(window);
 334     wxCHECK_MSG(item, false, wxT("Failed to find item."));
 335     return item->SetSpan(span);
 336 }
 337
 338
 339 bool wxGridBagSizer::SetItemSpan(wxSizer *sizer, const wxGBSpan& span)
 340 {
 341     wxGBSizerItem* item = FindItem(sizer);
 342     wxCHECK_MSG(item, false, wxT("Failed to find item."));
 343     return item->SetSpan(span);
 344 }
 345
 346
 347 bool wxGridBagSizer::SetItemSpan(size_t index, const wxGBSpan& span)
 348 {
 349     wxSizerItemList::compatibility_iterator node = m_children.Item( index );
 350     wxCHECK_MSG( node, false, _T("Failed to find item.") );
 351     wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
 352     return item->SetSpan(span);
 353 }
 354
 355
 356
 357
 358 wxGBSizerItem* wxGridBagSizer::FindItem(wxWindow* window)
 359 {
 360     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 361     while (node)
 362     {
 363         wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
 364         if ( item->GetWindow() == window )
 365             return item;
 366         node = node->GetNext();
 367     }
 368     return NULL;
 369 }
 370
 371
 372 wxGBSizerItem* wxGridBagSizer::FindItem(wxSizer* sizer)
 373 {
 374     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 375     while (node)
 376     {
 377         wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
 378         if ( item->GetSizer() == sizer )
 379             return item;
 380         node = node->GetNext();
 381     }
 382     return NULL;
 383 }
 384
 385
 386
 387
 388 wxGBSizerItem* wxGridBagSizer::FindItemAtPosition(const wxGBPosition& pos)
 389 {
 390     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 391     while (node)
 392     {
 393         wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
 394         if ( item->Intersects(pos, wxDefaultSpan) )
 395             return item;
 396         node = node->GetNext();
 397     }
 398     return NULL;
 399 }
 400
 401
 402
 403
 404 wxGBSizerItem* wxGridBagSizer::FindItemAtPoint(const wxPoint& pt)
 405 {
 406     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 407     while (node)
 408     {
 409         wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
 410         wxRect rect(item->GetPosition(), item->GetSize());
 411         rect.Inflate(m_hgap, m_vgap);
 412         if ( rect.Contains(pt) )
 413             return item;
 414         node = node->GetNext();
 415     }
 416     return NULL;
 417 }
 418
 419
 420
 421
 422 wxGBSizerItem* wxGridBagSizer::FindItemWithData(const wxObject* userData)
 423 {
 424     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 425     while (node)
 426     {
 427         wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
 428         if ( item->GetUserData() == userData )
 429             return item;
 430         node = node->GetNext();
 431     }
 432     return NULL;
 433 }
 434
 435
 436
 437
 438 //---------------------------------------------------------------------------
 439
 440 // Figure out what all the min row heights and col widths are, and calculate
 441 // min size from that.
 442 wxSize wxGridBagSizer::CalcMin()
 443 {
 444     int idx;
 445
 446     if (m_children.GetCount() == 0)
 447         return m_emptyCellSize;
 448
 449     m_rowHeights.Empty();
 450     m_colWidths.Empty();
 451
 452     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 453     while (node)
 454     {
 455         wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
 456         if ( item->IsShown() )
 457         {
 458             int row, col, endrow, endcol;
 459
 460             item->GetPos(row, col);
 461             item->GetEndPos(endrow, endcol);
 462
 463             // fill heights and widths upto this item if needed
 464             while ( m_rowHeights.GetCount() <= (size_t)endrow )
 465                 m_rowHeights.Add(m_emptyCellSize.GetHeight());
 466             while ( m_colWidths.GetCount() <= (size_t)endcol )
 467                 m_colWidths.Add(m_emptyCellSize.GetWidth());
 468
 469             // See if this item increases the size of its row(s) or col(s)
 470             wxSize size(item->CalcMin());
 471             for (idx=row; idx <= endrow; idx++)
 472                 m_rowHeights[idx] = wxMax(m_rowHeights[idx], size.GetHeight() / (endrow-row+1));
 473             for (idx=col; idx <= endcol; idx++)
 474                 m_colWidths[idx] = wxMax(m_colWidths[idx], size.GetWidth() / (endcol-col+1));
 475         }
 476         node = node->GetNext();
 477     }
 478
 479     AdjustForOverflow();
 480     AdjustForFlexDirection();
 481
 482     // Now traverse the heights and widths arrays calcing the totals, including gaps
 483     int width = 0;
 484     m_cols = m_colWidths.GetCount();
 485     for (idx=0; idx < m_cols; idx++)
 486         width += m_colWidths[idx] + ( idx == m_cols-1 ? 0 : m_hgap );
 487
 488     int height = 0;
 489     m_rows = m_rowHeights.GetCount();
 490     for (idx=0; idx < m_rows; idx++)
 491         height += m_rowHeights[idx] + ( idx == m_rows-1 ? 0 : m_vgap );
 492
 493     m_calculatedMinSize = wxSize(width, height);
 494     return m_calculatedMinSize;
 495 }
 496
 497
 498
 499 void wxGridBagSizer::RecalcSizes()
 500 {
 501     if (m_children.GetCount() == 0)
 502         return;
 503
 504     wxPoint pt( GetPosition() );
 505     wxSize  sz( GetSize() );
 506
 507     m_rows = m_rowHeights.GetCount();
 508     m_cols = m_colWidths.GetCount();
 509     int idx, width, height;
 510
 511     AdjustForGrowables(sz);
 512
 513     // Find the start positions on the window of the rows and columns
 514     wxArrayInt rowpos;
 515     rowpos.Add(0, m_rows);
 516     int y = pt.y;
 517     for (idx=0; idx < m_rows; idx++)
 518     {
 519         height = m_rowHeights[idx] + m_vgap;
 520         rowpos[idx] = y;
 521         y += height;
 522     }
 523
 524     wxArrayInt colpos;
 525     colpos.Add(0, m_cols);
 526     int x = pt.x;
 527     for (idx=0; idx < m_cols; idx++)
 528     {
 529         width = m_colWidths[idx] + m_hgap;
 530         colpos[idx] = x;
 531         x += width;
 532     }
 533
 534
 535     // Now iterate the children, setting each child's dimensions
 536     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 537     while (node)
 538     {
 539         int row, col, endrow, endcol;
 540         wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
 541
 542         if ( item->IsShown() )
 543         {
 544             item->GetPos(row, col);
 545             item->GetEndPos(endrow, endcol);
 546
 547             height = 0;
 548             for(idx=row; idx <= endrow; idx++)
 549                 height += m_rowHeights[idx];
 550             height += (endrow - row) * m_vgap; // add a vgap for every row spanned
 551
 552             width = 0;
 553             for (idx=col; idx <= endcol; idx++)
 554                 width += m_colWidths[idx];
 555             width += (endcol - col) * m_hgap; // add a hgap for every col spanned
 556
 557             SetItemBounds(item, colpos[col], rowpos[row], width, height);
 558         }
 559
 560         node = node->GetNext();
 561     }
 562 }
 563
 564
 565 // Sometimes CalcMin can result in some rows or cols having too much space in
 566 // them because as it traverses the items it makes some assumptions when
 567 // items span to other cells.  But those assumptions can become invalid later
 568 // on when other items are fitted into the same rows or columns that the
 569 // spanning item occupies. This method tries to find those situations and
 570 // fixes them.
 571 void wxGridBagSizer::AdjustForOverflow()
 572 {
 573     int row, col;
 574
 575     for (row=0; row<m_rowHeights.GetCount(); row++)
 576     {
 577         int rowExtra=INT_MAX;
 578         int rowHeight = m_rowHeights[row];
 579         for (col=0; col<m_colWidths.GetCount(); col++)
 580         {
 581             wxGBPosition pos(row,col);
 582             wxGBSizerItem* item = FindItemAtPosition(pos);
 583             if ( !item )
 584                 continue;
 585
 586             int endrow, endcol;
 587             item->GetEndPos(endrow, endcol);
 588
 589             // If the item starts in this position and doesn't span rows, then
 590             // just look at the whole item height
 591             if ( item->GetPos() == pos && endrow == row )
 592             {
 593                 int itemHeight = item->GetSize().GetHeight();
 594                 rowExtra = wxMin(rowExtra, rowHeight - itemHeight);
 595                 continue;
 596             }
 597
 598             // Otherwise, only look at spanning items if they end on this row
 599             if ( endrow == row )
 600             {
 601                 // first deduct the portions of the item that are on prior rows
 602                 int itemHeight = item->GetSize().GetHeight();
 603                 for (int r=item->GetPos().GetRow(); r<row; r++)
 604                     itemHeight -= (m_rowHeights[r] + GetHGap());
 605
 606                 if ( itemHeight < 0 )
 607                     itemHeight = 0;
 608
 609                 // and check how much is left
 610                 rowExtra = wxMin(rowExtra, rowHeight - itemHeight);
 611             }
 612         }
 613         if ( rowExtra && rowExtra != INT_MAX )
 614             m_rowHeights[row] -= rowExtra;
 615     }
 616
 617     // Now do the same thing for columns
 618     for (col=0; col<m_colWidths.GetCount(); col++)
 619     {
 620         int colExtra=INT_MAX;
 621         int colWidth = m_colWidths[col];
 622         for (row=0; row<m_rowHeights.GetCount(); row++)
 623         {
 624             wxGBPosition pos(row,col);
 625             wxGBSizerItem* item = FindItemAtPosition(pos);
 626             if ( !item )
 627                 continue;
 628
 629             int endrow, endcol;
 630             item->GetEndPos(endrow, endcol);
 631
 632             if ( item->GetPos() == pos && endcol == col )
 633             {
 634                 int itemWidth = item->GetSize().GetWidth();
 635                 colExtra = wxMin(colExtra, colWidth - itemWidth);
 636                 continue;
 637             }
 638
 639             if ( endcol == col )
 640             {
 641                 int itemWidth = item->GetSize().GetWidth();
 642                 for (int c=item->GetPos().GetCol(); c<col; c++)
 643                     itemWidth -= (m_colWidths[c] + GetVGap());
 644
 645                 if ( itemWidth < 0 )
 646                     itemWidth = 0;
 647
 648                 colExtra = wxMin(colExtra, colWidth - itemWidth);
 649             }
 650         }
 651         if ( colExtra && colExtra != INT_MAX )
 652             m_colWidths[col] -= colExtra;
 653     }
 654
 655
 656 }
 657
 658 //---------------------------------------------------------------------------
 659
 660 bool wxGridBagSizer::CheckForIntersection(wxGBSizerItem* item, wxGBSizerItem* excludeItem)
 661 {
 662     return CheckForIntersection(item->GetPos(), item->GetSpan(), excludeItem);
 663 }
 664
 665 bool wxGridBagSizer::CheckForIntersection(const wxGBPosition& pos, const wxGBSpan& span, wxGBSizerItem* excludeItem)
 666 {
 667     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 668     while (node)
 669     {
 670         wxGBSizerItem* item = (wxGBSizerItem*)node->GetData();
 671         node = node->GetNext();
 672
 673         if ( excludeItem && item == excludeItem )
 674             continue;
 675
 676         if ( item->Intersects(pos, span) )
 677             return true;
 678
 679     }
 680     return false;
 681 }
 682
 683
 684 // Assumes a 10x10 grid, and returns the first empty cell found.  This is
 685 // really stupid but it is only used by the Add methods that match the base
 686 // class virtuals, which should normally not be used anyway...
 687 wxGBPosition wxGridBagSizer::FindEmptyCell()
 688 {
 689     int row, col;
 690
 691     for (row=0; row<10; row++)
 692         for (col=0; col<10; col++)
 693         {
 694             wxGBPosition pos(row, col);
 695             if ( !CheckForIntersection(pos, wxDefaultSpan) )
 696                 return pos;
 697         }
 698     return wxGBPosition(-1, -1);
 699 }
 700
 701
 702 //---------------------------------------------------------------------------
 703
 704 // The Add base class virtuals should not be used with this class, but
 705 // we'll try to make them automatically select a location for the item
 706 // anyway.
 707
 708 wxSizerItem* wxGridBagSizer::Add( wxWindow *window, int, int flag, int border, wxObject* userData )
 709 {
 710     return Add(window, FindEmptyCell(), wxDefaultSpan, flag, border, userData);
 711 }
 712
 713 wxSizerItem* wxGridBagSizer::Add( wxSizer *sizer, int, int flag, int border, wxObject* userData )
 714 {
 715     return Add(sizer, FindEmptyCell(), wxDefaultSpan, flag, border, userData);
 716 }
 717
 718 wxSizerItem* wxGridBagSizer::Add( int width, int height, int, int flag, int border, wxObject* userData )
 719 {
 720     return Add(width, height, FindEmptyCell(), wxDefaultSpan, flag, border, userData);
 721 }
 722
 723
 724
 725 // The Insert nad Prepend base class virtuals that are not appropriate for
 726 // this class and should not be used.  Their implementation in this class
 727 // simply fails.
 728
 729 wxSizerItem* wxGridBagSizer::Add( wxSizerItem * )
 730 {
 731     wxFAIL_MSG(wxT("Invalid Add form called."));
 732     return (wxSizerItem*)NULL;
 733 }
 734
 735 wxSizerItem* wxGridBagSizer::Prepend( wxWindow *, int, int, int, wxObject*  )
 736 {
 737     wxFAIL_MSG(wxT("Prepend should not be used with wxGridBagSizer."));
 738     return (wxSizerItem*)NULL;
 739 }
 740
 741 wxSizerItem* wxGridBagSizer::Prepend( wxSizer *, int, int, int, wxObject*  )
 742 {
 743     wxFAIL_MSG(wxT("Prepend should not be used with wxGridBagSizer."));
 744     return (wxSizerItem*)NULL;
 745 }
 746
 747 wxSizerItem* wxGridBagSizer::Prepend( int, int, int, int, int, wxObject*  )
 748 {
 749     wxFAIL_MSG(wxT("Prepend should not be used with wxGridBagSizer."));
 750     return (wxSizerItem*)NULL;
 751 }
 752
 753 wxSizerItem* wxGridBagSizer::Prepend( wxSizerItem * )
 754 {
 755     wxFAIL_MSG(wxT("Prepend should not be used with wxGridBagSizer."));
 756     return (wxSizerItem*)NULL;
 757 }
 758
 759
 760 wxSizerItem* wxGridBagSizer::Insert( size_t, wxWindow *, int, int, int, wxObject*  )
 761 {
 762     wxFAIL_MSG(wxT("Insert should not be used with wxGridBagSizer."));
 763     return (wxSizerItem*)NULL;
 764 }
 765
 766 wxSizerItem* wxGridBagSizer::Insert( size_t, wxSizer *, int, int, int, wxObject*  )
 767 {
 768     wxFAIL_MSG(wxT("Insert should not be used with wxGridBagSizer."));
 769     return (wxSizerItem*)NULL;
 770 }
 771
 772 wxSizerItem* wxGridBagSizer::Insert( size_t, int, int, int, int, int, wxObject*  )
 773 {
 774     wxFAIL_MSG(wxT("Insert should not be used with wxGridBagSizer."));
 775     return (wxSizerItem*)NULL;
 776 }
 777
 778 wxSizerItem* wxGridBagSizer::Insert( size_t, wxSizerItem * )
 779 {
 780     wxFAIL_MSG(wxT("Insert should not be used with wxGridBagSizer."));
 781     return (wxSizerItem*)NULL;
 782 }
 783
 784
 785 //---------------------------------------------------------------------------
 786 //---------------------------------------------------------------------------