src/generic/gridsel.cpp

   1 ///////////////////////////////////////////////////////////////////////////
   2 // Name:        generic/gridsel.cpp
   3 // Purpose:     wxGridSelection
   4 // Author:      Stefan Neis
   5 // Modified by:
   6 // Created:     20/02/1999
   7 // RCS-ID:      $$
   8 // Copyright:   (c) Stefan Neis (Stefan.Neis@t-online.de)
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "gridsel.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx/wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #include "wx/defs.h"
  28
  29 #ifdef __BORLANDC__
  30     #pragma hdrstop
  31 #endif
  32
  33 #if defined(wxUSE_NEW_GRID) && (wxUSE_NEW_GRID)
  34
  35 #include "wx/generic/gridsel.h"
  36
  37 // Some explanation for the members of the class:
  38 // m_cellSelection stores individual selected cells
  39 //   -- this is only used if m_selectionMode == wxGridSelectCells
  40 // m_blockSelectionTopLeft and m_blockSelectionBottomRight
  41 //   store the upper left and lower right corner of selected Blocks
  42 // m_rowSelection and m_colSelection store individual selected
  43 //   rows and columns; maybe those are superfluous and should be
  44 //   treated as blocks?
  45
  46 wxGridSelection::wxGridSelection( wxGrid * grid,
  47                                   wxGrid::wxGridSelectionModes sel )
  48 {
  49     m_grid = grid;
  50     m_selectionMode = sel;
  51 }
  52
  53 bool wxGridSelection::IsSelection()
  54 {
  55   return ( m_cellSelection.GetCount() || m_blockSelectionTopLeft.GetCount() ||
  56            m_rowSelection.GetCount() || m_colSelection.GetCount() );
  57 }
  58
  59 bool wxGridSelection::IsInSelection ( int row, int col )
  60 {
  61     size_t count;
  62
  63     // First check whether the given cell is individually selected
  64     // (if m_selectionMode is wxGridSelectCells).
  65     if ( m_selectionMode == wxGrid::wxGridSelectCells )
  66     {
  67         count = m_cellSelection.GetCount();
  68         for ( size_t n = 0; n < count; n++ )
  69         {
  70             wxGridCellCoords& coords = m_cellSelection[n];
  71             if ( row == coords.GetRow() && col == coords.GetCol() )
  72                 return TRUE;
  73         }
  74     }
  75
  76     // Now check whether the given cell is
  77     // contained in one of the selected blocks.
  78     count = m_blockSelectionTopLeft.GetCount();
  79     for ( size_t n = 0; n < count; n++ )
  80     {
  81         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
  82         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
  83         if ( BlockContainsCell(coords1.GetRow(), coords1.GetCol(),
  84                                coords2.GetRow(), coords2.GetCol(),
  85                                row, col ) )
  86             return TRUE;
  87     }
  88
  89     // Now check whether the given cell is
  90     // contained in one of the selected rows
  91     // (unless we are in column selection mode).
  92     if ( m_selectionMode != wxGrid::wxGridSelectColumns )
  93     {
  94         size_t count = m_rowSelection.GetCount();
  95         for ( size_t n = 0; n < count; n++ )
  96         {
  97             if ( row == m_rowSelection[n] )
  98               return TRUE;
  99         }
 100     }
 101
 102     // Now check whether the given cell is
 103     // contained in one of the selected columns
 104     // (unless we are in row selection mode).
 105     if ( m_selectionMode != wxGrid::wxGridSelectRows )
 106     {
 107         size_t count = m_colSelection.GetCount();
 108         for ( size_t n = 0; n < count; n++ )
 109         {
 110             if ( col == m_colSelection[n] )
 111               return TRUE;
 112         }
 113     }
 114     return FALSE;
 115 }
 116
 117 // Change the selection mode
 118 void wxGridSelection::SetSelectionMode(wxGrid::wxGridSelectionModes selmode)
 119 {
 120     // if selection mode is unchanged return immediately
 121     if (selmode == m_selectionMode)
 122         return;
 123
 124     if ( m_selectionMode != wxGrid::wxGridSelectCells )
 125     {
 126         // if changing form row to column selection
 127         // or vice versa, clear the selection.
 128         if ( selmode != wxGrid::wxGridSelectCells )
 129             ClearSelection();
 130
 131         m_selectionMode = selmode;
 132     }
 133     else
 134     {
 135         // if changing from cell selection to something else,
 136         // promote selected cells/blocks to whole rows/columns.
 137         size_t n;
 138         while ( ( n = m_cellSelection.GetCount() ) > 0 )
 139         {
 140             n--;
 141             wxGridCellCoords& coords = m_cellSelection[n];
 142             int row = coords.GetRow();
 143             int col = coords.GetCol();
 144             m_cellSelection.RemoveAt(n);
 145             if (selmode == wxGrid::wxGridSelectRows)
 146                 SelectRow( row );
 147             else // selmode == wxGridSelectColumns)
 148                 SelectCol( col );
 149         }
 150
 151         for (n = 0; n < m_blockSelectionTopLeft.GetCount(); n++)
 152         // Note that m_blockSelectionTopLeft's size may be changing!
 153         {
 154             wxGridCellCoords& coords = m_blockSelectionTopLeft[n];
 155             int topRow = coords.GetRow();
 156             int leftCol = coords.GetCol();
 157             coords = m_blockSelectionBottomRight[n];
 158             int bottomRow = coords.GetRow();
 159             int rightCol = coords.GetCol();
 160             if (selmode == wxGrid::wxGridSelectRows)
 161             {
 162                 if (leftCol != 0 || rightCol != m_grid->GetNumberCols() - 1 )
 163                 {
 164                     m_blockSelectionTopLeft.RemoveAt(n);
 165                     m_blockSelectionBottomRight.RemoveAt(n);
 166                     SelectBlock( topRow, 0,
 167                                  bottomRow, m_grid->GetNumberCols() - 1,
 168                                  0, FALSE );
 169                 }
 170             }
 171             else // selmode == wxGridSelectColumns)
 172             {
 173                 if (topRow != 0 || bottomRow != m_grid->GetNumberRows() - 1 )
 174                 {
 175                     m_blockSelectionTopLeft.RemoveAt(n);
 176                     m_blockSelectionBottomRight.RemoveAt(n);
 177                     SelectBlock( 0, leftCol,
 178                                  m_grid->GetNumberRows() - 1, rightCol,
 179                                  0, FALSE );
 180                 }
 181             }
 182         }
 183         m_selectionMode = selmode;
 184     }
 185 }
 186
 187 void wxGridSelection::SelectRow( int row, bool addToSelected )
 188 {
 189     if ( m_selectionMode == wxGrid::wxGridSelectColumns )
 190         return;
 191     size_t count, n;
 192
 193     // Remove single cells contained in newly selected block.
 194     if ( m_selectionMode == wxGrid::wxGridSelectCells )
 195     {
 196         count = m_cellSelection.GetCount();
 197         for ( n = 0; n < count; n++ )
 198         {
 199             wxGridCellCoords& coords = m_cellSelection[n];
 200             if ( BlockContainsCell( row, 0, row, m_grid->GetNumberCols() - 1,
 201                                     coords.GetRow(), coords.GetCol() ) )
 202             {
 203                 m_cellSelection.RemoveAt(n);
 204                 n--; count--;
 205             }
 206         }
 207     }
 208
 209     // Simplify list of selected blocks (if possible)
 210     count = m_blockSelectionTopLeft.GetCount();
 211     bool done = FALSE;
 212     for ( n = 0; n < count; n++ )
 213     {
 214         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 215         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 216
 217         // Remove block if it is a subset of the row
 218         if ( coords1.GetRow() == row && row == coords2.GetRow() )
 219         {
 220             m_blockSelectionTopLeft.RemoveAt(n);
 221             m_blockSelectionBottomRight.RemoveAt(n);
 222             n--; count--;
 223         }
 224         else if ( coords1.GetCol() == 0  &&
 225                   coords2.GetCol() == m_grid->GetNumberCols() - 1 )
 226         {
 227             // silently return, if row is contained in block
 228             if ( coords1.GetRow() <= row && row <= coords2.GetRow() )
 229                 return;
 230             // expand block, if it touched row
 231             else if ( coords1.GetRow() == row + 1)
 232             {
 233                 coords1.SetRow(row);
 234                 done = TRUE;
 235             }
 236             else if ( coords2.GetRow() == row - 1)
 237             {
 238                 coords2.SetRow(row);
 239                 done = TRUE;
 240             }
 241         }
 242     }
 243
 244     // Unless we successfully handled the row,
 245     // check whether row is already selected.
 246     if ( !done )
 247     {
 248         count = m_rowSelection.GetCount();
 249         for ( n = 0; n < count; n++ )
 250         {
 251             if ( row == m_rowSelection[n] )
 252                 return;
 253         }
 254
 255         // Add row to selection
 256         m_rowSelection.Add(row);
 257     }
 258
 259     // Update View:
 260     wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, 0 ),
 261                                           wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
 262     if ( !m_grid->GetBatchCount() )
 263         ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 264
 265     // Send Event
 266     wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 267                                     wxEVT_GRID_RANGE_SELECT,
 268                                     m_grid,
 269                                     wxGridCellCoords( row, 0 ),
 270                                     wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
 271
 272     m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 273 }
 274
 275 void wxGridSelection::SelectCol( int col, bool addToSelected )
 276 {
 277     if ( m_selectionMode == wxGrid::wxGridSelectRows )
 278         return;
 279     size_t count, n;
 280
 281     // Remove single cells contained in newly selected block.
 282     if ( m_selectionMode == wxGrid::wxGridSelectCells )
 283     {
 284         count = m_cellSelection.GetCount();
 285         for ( n = 0; n < count; n++ )
 286         {
 287             wxGridCellCoords& coords = m_cellSelection[n];
 288             if ( BlockContainsCell( 0, col, m_grid->GetNumberRows() - 1, col,
 289                                     coords.GetRow(), coords.GetCol() ) )
 290             {
 291                 m_cellSelection.RemoveAt(n);
 292                 n--; count--;
 293             }
 294         }
 295     }
 296
 297     // Simplify list of selected blocks (if possible)
 298     count = m_blockSelectionTopLeft.GetCount();
 299     bool done = FALSE;
 300     for ( n = 0; n < count; n++ )
 301     {
 302         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 303         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 304
 305         // Remove block if it is a subset of the column
 306         if ( coords1.GetCol() == col && col == coords2.GetCol() )
 307         {
 308             m_blockSelectionTopLeft.RemoveAt(n);
 309             m_blockSelectionBottomRight.RemoveAt(n);
 310             n--; count--;
 311         }
 312         else if ( coords1.GetRow() == 0  &&
 313                   coords2.GetRow() == m_grid->GetNumberRows() - 1 )
 314         {
 315             // silently return, if row is contained in block
 316             if ( coords1.GetCol() <= col && col <= coords2.GetCol() )
 317                 return;
 318             // expand block, if it touched col
 319             else if ( coords1.GetCol() == col + 1)
 320             {
 321                 coords1.SetCol(col);
 322                 done = TRUE;
 323             }
 324             else if ( coords2.GetCol() == col - 1)
 325             {
 326                 coords2.SetCol(col);
 327                 done = TRUE;
 328             }
 329         }
 330     }
 331
 332     // Unless we successfully handled the column,
 333     // Check whether col is already selected.
 334     if ( !done )
 335     {
 336         count = m_colSelection.GetCount();
 337         for ( n = 0; n < count; n++ )
 338         {
 339             if ( col == m_colSelection[n] )
 340                 return;
 341         }
 342
 343         // Add col to selection
 344         m_colSelection.Add(col);
 345     }
 346
 347     // Update View:
 348     wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( 0, col ),
 349                                           wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
 350     if ( !m_grid->GetBatchCount() )
 351         ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 352
 353     // Send Event
 354     wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 355                                     wxEVT_GRID_RANGE_SELECT,
 356                                     m_grid,
 357                                     wxGridCellCoords( 0, col ),
 358                                     wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
 359
 360     m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 361 }
 362
 363 void wxGridSelection::SelectBlock( int topRow, int leftCol,
 364                                    int bottomRow, int rightCol,
 365                                    wxMouseEvent* mouseEv, bool sendEvent )
 366 {
 367     // Fix the coordinates of the block if needed.
 368     if ( m_selectionMode == wxGrid::wxGridSelectRows )
 369     {
 370         leftCol = 0;
 371         rightCol = m_grid->GetNumberCols() - 1;
 372     }
 373     else if ( m_selectionMode == wxGrid::wxGridSelectColumns )
 374     {
 375         topRow = 0;
 376         bottomRow = m_grid->GetNumberRows() - 1;
 377     }
 378     if ( topRow > bottomRow )
 379     {
 380         int temp = topRow;
 381         topRow = bottomRow;
 382         bottomRow = temp;
 383     }
 384
 385     if ( leftCol > rightCol )
 386     {
 387         int temp = leftCol;
 388         leftCol = rightCol;
 389         rightCol = temp;
 390     }
 391
 392     // Handle single cell selection in SelectCell.
 393     if ( topRow == bottomRow && leftCol == rightCol )
 394         SelectCell( topRow, leftCol, sendEvent );
 395
 396     size_t count, n;
 397     // Remove single cells contained in newly selected block.
 398     if ( m_selectionMode == wxGrid::wxGridSelectCells )
 399     {
 400         count = m_cellSelection.GetCount();
 401         for ( n = 0; n < count; n++ )
 402         {
 403             wxGridCellCoords& coords = m_cellSelection[n];
 404             if ( BlockContainsCell( topRow, leftCol, bottomRow, rightCol,
 405                                     coords.GetRow(), coords.GetCol() ) )
 406             {
 407                 m_cellSelection.RemoveAt(n);
 408                 n--; count--;
 409             }
 410         }
 411     }
 412
 413     // If a block containing the selection is already selected, return,
 414     // if a block contained in the selection is found, remove it.
 415
 416     count = m_blockSelectionTopLeft.GetCount();
 417     for ( n = 0; n < count; n++ )
 418     {
 419         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 420         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 421         switch ( BlockContain( coords1.GetRow(), coords1.GetCol(),
 422                                coords2.GetRow(), coords2.GetCol(),
 423                                topRow, leftCol, bottomRow, rightCol ) )
 424         {
 425           case 1:
 426             return;
 427           case -1:
 428             m_blockSelectionTopLeft.RemoveAt(n);
 429             m_blockSelectionBottomRight.RemoveAt(n);
 430             n--; count--;
 431           default:
 432             ;
 433         }
 434     }
 435
 436     // If a row containing the selection is already selected, return,
 437     // if a row contained in newly selected block is found, remove it.
 438     if ( m_selectionMode != wxGrid::wxGridSelectColumns )
 439     {
 440         count = m_rowSelection.GetCount();
 441         for ( n = 0; n < count; n++ )
 442         {
 443             switch ( BlockContain( m_rowSelection[n], 0,
 444                                    m_rowSelection[n], m_grid->GetNumberCols()-1,
 445                                    topRow, leftCol, bottomRow, rightCol ) )
 446             {
 447               case 1:
 448                 return;
 449               case -1:
 450                 m_rowSelection.RemoveAt(n);
 451                 n--; count--;
 452               default:
 453                 ;
 454             }
 455         }
 456     }
 457     if ( m_selectionMode != wxGrid::wxGridSelectRows )
 458     {
 459         count = m_colSelection.GetCount();
 460         for ( n = 0; n < count; n++ )
 461         {
 462             switch ( BlockContain( 0, m_colSelection[n],
 463                                    m_grid->GetNumberRows()-1, m_colSelection[n],
 464                                    topRow, leftCol, bottomRow, rightCol ) )
 465             {
 466               case 1:
 467                 return;
 468               case -1:
 469                 m_colSelection.RemoveAt(n);
 470                 n--; count--;
 471               default:
 472                 ;
 473             }
 474         }
 475     }
 476     m_blockSelectionTopLeft.Add( wxGridCellCoords( topRow, leftCol ) );
 477     m_blockSelectionBottomRight.Add( wxGridCellCoords( bottomRow, rightCol ) );
 478
 479     // Update View:
 480     wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( topRow, leftCol ),
 481                                           wxGridCellCoords( bottomRow, rightCol ) );
 482     if ( !m_grid->GetBatchCount() )
 483         ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 484
 485     // Send Event, if not disabled.
 486     if ( sendEvent )
 487     {
 488         if ( mouseEv == 0)
 489         {
 490             wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 491                                             wxEVT_GRID_RANGE_SELECT,
 492                                             m_grid,
 493                                             wxGridCellCoords( topRow, leftCol ),
 494                                             wxGridCellCoords( bottomRow, rightCol ) );
 495             m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 496         }
 497         else
 498         {
 499             wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 500                                             wxEVT_GRID_RANGE_SELECT,
 501                                             m_grid,
 502                                             wxGridCellCoords( topRow, leftCol ),
 503                                             wxGridCellCoords( bottomRow, rightCol ),
 504                                             TRUE,
 505                                             mouseEv->ControlDown(),
 506                                             mouseEv->ShiftDown(),
 507                                             mouseEv->AltDown(),
 508                                             mouseEv->MetaDown() );
 509             m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 510         }
 511     }
 512 }
 513
 514 void wxGridSelection::SelectCell( int row, int col, bool sendEvent )
 515 {
 516     if ( m_selectionMode == wxGrid::wxGridSelectRows )
 517     {
 518         SelectBlock(row, 0, row, m_grid->GetNumberCols() - 1 );
 519         return;
 520     }
 521     else if ( m_selectionMode == wxGrid::wxGridSelectColumns )
 522     {
 523         SelectBlock(0, col, m_grid->GetNumberRows() - 1, col );
 524         return;
 525     }
 526     else if ( IsInSelection ( row, col ) )
 527         return;
 528     m_cellSelection.Add( wxGridCellCoords( row, col ) );
 529
 530     // Update View:
 531     wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, col ),
 532                                           wxGridCellCoords( row, col ) );
 533     if ( !m_grid->GetBatchCount() )
 534         ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 535
 536     // Send event
 537     wxGridEvent gridEvt( m_grid->GetId(),
 538                          wxEVT_GRID_SELECT_CELL,
 539                          m_grid,
 540                          row, col );
 541     m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 542 }
 543
 544 void wxGridSelection::ToggleCellSelection( int row, int col)
 545 {
 546     // if the cell is not selected, select it
 547     if ( !IsInSelection ( row, col ) )
 548     {
 549         SelectCell( row, col );
 550         return;
 551     }
 552
 553     // otherwise deselect it. This can be simple or more or
 554     // less difficult, depending on how the cell is selected.
 555     size_t count, n;
 556
 557     // The simplest case: The cell is contained in m_cellSelection
 558     // Then it can't be contained in rows/cols/block (since those
 559     // would remove the cell from m_cellSelection on creation), so
 560     // we just have to remove it from m_cellSelection.
 561
 562     if ( m_selectionMode == wxGrid::wxGridSelectCells )
 563     {
 564         count = m_cellSelection.GetCount();
 565         for ( n = 0; n < count; n++ )
 566         {
 567             wxGridCellCoords& coords = m_cellSelection[n];
 568             if ( row == coords.GetRow() && col == coords.GetCol() )
 569             {
 570                 wxRect r;
 571                 r = m_grid->BlockToDeviceRect( m_cellSelection[n],
 572                                                m_cellSelection[n] );
 573                 m_cellSelection.RemoveAt(n);
 574                 n--; count--;
 575                 if ( !m_grid->GetBatchCount() )
 576                     ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 577                 return;
 578
 579                 // Send event
 580                 wxGridEvent gridEvt( m_grid->GetId(),
 581                                      wxEVT_GRID_SELECT_CELL,
 582                                      m_grid,
 583                                      row, col, -1, -1, FALSE );
 584                 m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 585             }
 586         }
 587     }
 588
 589     // The most difficult case: The cell is member of one or even several
 590     // blocks. Split each such block in up to 4 new parts, that don't
 591     // contain the cell to be selected, like this:
 592     // |---------------------------|
 593     // |                           |
 594     // |           part 1          |
 595     // |                           |
 596     // |---------------------------|
 597     // |   part 3   |x|   part 4   |
 598     // |---------------------------|
 599     // |                           |
 600     // |           part 2          |
 601     // |                           |
 602     // |---------------------------|
 603     //   (The x marks the newly deselected cell).
 604     // Note: in row selection mode, we only need part1 and part2;
 605     //       in column selection mode, we only need part 3 and part4,
 606     //          which are expanded to whole columns automatically!
 607
 608     count = m_blockSelectionTopLeft.GetCount();
 609     for ( n = 0; n < count; n++ )
 610       {
 611         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 612         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 613         int topRow = coords1.GetRow();
 614         int leftCol = coords1.GetCol();
 615         int bottomRow = coords2.GetRow();
 616         int rightCol = coords2.GetCol();
 617         if ( BlockContainsCell( topRow, leftCol, bottomRow, rightCol,
 618                                 row, col ) )
 619         {
 620             // remove the block
 621             m_blockSelectionTopLeft.RemoveAt(n);
 622             m_blockSelectionBottomRight.RemoveAt(n);
 623             n--; count--;
 624             // add up to 4 smaller blocks and set update region
 625             if ( m_selectionMode != wxGrid::wxGridSelectColumns )
 626             {
 627                 if ( topRow < row )
 628                     SelectBlock( topRow, leftCol,
 629                                  row - 1, rightCol, 0, FALSE );
 630                 if ( bottomRow > row )
 631                     SelectBlock( row + 1, leftCol,
 632                                  bottomRow, rightCol, 0, FALSE );
 633             }
 634             if ( m_selectionMode != wxGrid::wxGridSelectRows )
 635             {
 636                 if ( leftCol < col )
 637                     SelectBlock( row, leftCol, row, col - 1, 0, FALSE );
 638                 if ( rightCol > col )
 639                     SelectBlock( row, col + 1, row, rightCol, 0, FALSE );
 640             }
 641         }
 642     }
 643
 644     // remove a cell from a row, adding up to two new blocks
 645     if ( m_selectionMode != wxGrid::wxGridSelectColumns )
 646     {
 647         count = m_rowSelection.GetCount();
 648         for ( n = 0; n < count; n++ )
 649         {
 650             if ( m_rowSelection[n] == row )
 651             {
 652                 m_rowSelection.RemoveAt(n);
 653                 n--; count--;
 654                 if (m_selectionMode == wxGrid::wxGridSelectCells)
 655                 {
 656                     if ( col > 0 )
 657                         SelectBlock( row, 0, row, col - 1, 0, FALSE );
 658                     if ( col < m_grid->GetNumberCols() - 1 )
 659                         SelectBlock( row, col + 1,
 660                                      row, m_grid->GetNumberCols() - 1,
 661                                      0, FALSE );
 662                 }
 663             }
 664         }
 665     }
 666
 667     // remove a cell from a column, adding up to two new blocks
 668     if ( m_selectionMode != wxGrid::wxGridSelectRows )
 669     {
 670         count = m_colSelection.GetCount();
 671         for ( n = 0; n < count; n++ )
 672         {
 673             if ( m_colSelection[n] == col )
 674             {
 675                 m_colSelection.RemoveAt(n);
 676                 n--; count--;
 677                 if (m_selectionMode == wxGrid::wxGridSelectCells)
 678                 {
 679                     if ( row > 0 )
 680                         SelectBlock( 0, col, row - 1, col, 0, FALSE );
 681                     if ( row < m_grid->GetNumberRows() - 1 )
 682                         SelectBlock( row + 1, col,
 683                                      m_grid->GetNumberRows() - 1, col,
 684                                      0, FALSE );
 685                 }
 686             }
 687         }
 688     }
 689
 690     // Refresh the screen and send the event; according to m_selectionMode,
 691     // we need to either update only the cell, or the whole row/column.
 692     wxRect r;
 693     switch (m_selectionMode)
 694     {
 695       case wxGrid::wxGridSelectCells:
 696       {
 697           r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, col ),
 698                                          wxGridCellCoords( row, col ) );
 699           if ( !m_grid->GetBatchCount() )
 700               ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 701           wxGridEvent gridEvt( m_grid->GetId(),
 702                                wxEVT_GRID_SELECT_CELL,
 703                                m_grid,
 704                                row, col, -1, -1, FALSE );
 705           m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 706           break;
 707       }
 708       case wxGrid::wxGridSelectRows:
 709       {
 710           r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, 0 ),
 711                                          wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
 712           if ( !m_grid->GetBatchCount() )
 713               ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 714           wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 715                                           wxEVT_GRID_RANGE_SELECT,
 716                                           m_grid,
 717                                           wxGridCellCoords( row, 0 ),
 718                                           wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ),
 719                                           FALSE );
 720           m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 721           break;
 722       }
 723       case wxGrid::wxGridSelectColumns:
 724       {
 725           r = m_grid->BlockToDeviceRect( wxGridCellCoords( 0, col ),
 726                                          wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
 727           if ( !m_grid->GetBatchCount() )
 728               ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 729           wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 730                                           wxEVT_GRID_RANGE_SELECT,
 731                                           m_grid,
 732                                           wxGridCellCoords( 0, col ),
 733                                           wxGridCellCoords( m_grid->GetNumberRows() - 1, col ),
 734                                           FALSE );
 735           m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 736           break;
 737       }
 738     }
 739 }
 740
 741 void wxGridSelection::ClearSelection()
 742 {
 743     // Should this send deselection events?
 744     size_t n;
 745
 746     // deselect all invidiual cells and update the screen
 747     if ( m_selectionMode == wxGrid::wxGridSelectCells )
 748     {
 749
 750         while( ( n = m_cellSelection.GetCount() ) > 0)
 751         {
 752             wxRect r;
 753             n--;
 754             r = m_grid->BlockToDeviceRect( m_cellSelection[n],
 755                                            m_cellSelection[n] );
 756             m_cellSelection.RemoveAt(n);
 757             if ( !m_grid->GetBatchCount() )
 758                 ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 759         }
 760     }
 761
 762     // deselect all blocks and update the screen
 763     while( ( n = m_blockSelectionTopLeft.GetCount() ) > 0)
 764     {
 765         wxRect r;
 766         n--;
 767         r = m_grid->BlockToDeviceRect( m_blockSelectionTopLeft[n],
 768                                        m_blockSelectionBottomRight[n] );
 769         m_blockSelectionTopLeft.RemoveAt(n);
 770         m_blockSelectionBottomRight.RemoveAt(n);
 771         if ( !m_grid->GetBatchCount() )
 772             ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 773     }
 774
 775     // deselect all rows and update the screen
 776     if ( m_selectionMode != wxGrid::wxGridSelectColumns )
 777     {
 778         while( ( n = m_rowSelection.GetCount() ) > 0)
 779         {
 780             n--;
 781             int & row = m_rowSelection[n];
 782             wxRect r;
 783             r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, 0 ),
 784                                            wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
 785             m_rowSelection.RemoveAt(n);
 786             if ( !m_grid->GetBatchCount() )
 787                 ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 788         }
 789     }
 790
 791     // deselect all columns and update the screen
 792     if ( m_selectionMode != wxGrid::wxGridSelectRows )
 793     {
 794         while( ( n = m_colSelection.GetCount() ) > 0)
 795         {
 796             n--;
 797             int & col = m_colSelection[n];
 798             wxRect r;
 799             r = m_grid->BlockToDeviceRect( wxGridCellCoords( 0, col ),
 800                                            wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
 801             m_colSelection.RemoveAt(n);
 802             if ( !m_grid->GetBatchCount() )
 803                 ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 804         }
 805     }
 806 }
 807
 808
 809 void wxGridSelection::UpdateRows( size_t pos, int numRows )
 810 {
 811     size_t count = m_cellSelection.GetCount();
 812     size_t n;
 813     for ( n = 0; n < count; n++ )
 814     {
 815         wxGridCellCoords& coords = m_cellSelection[n];
 816         wxCoord row = coords.GetRow();
 817         if ((size_t)row >= pos)
 818         {
 819             if (numRows > 0)
 820             {
 821                 // If rows inserted, increase row counter where necessary
 822                 coords.SetRow(row + numRows);
 823             }
 824             else if (numRows < 0)
 825             {
 826                 // If rows deleted ...
 827                 if ((size_t)row >= pos - numRows)
 828                 {
 829                     // ...either decrement row counter (if row still exists)...
 830                     coords.SetRow(row + numRows);
 831                 }
 832                 else
 833                 {
 834                     // ...or remove the attribute
 835                     m_cellSelection.RemoveAt(n);
 836                     n--; count--;
 837                 }
 838             }
 839         }
 840     }
 841
 842     count = m_blockSelectionTopLeft.GetCount();
 843     for ( n = 0; n < count; n++ )
 844     {
 845         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 846         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 847         wxCoord row1 = coords1.GetRow();
 848         wxCoord row2 = coords2.GetRow();
 849         if ((size_t)row2 >= pos)
 850         {
 851             if (numRows > 0)
 852             {
 853                 // If rows inserted, increase row counter where necessary
 854                 coords2.SetRow(row2 + numRows);
 855                 if ( (size_t)row1 >= pos )
 856                     coords1.SetRow(row1 + numRows);
 857             }
 858             else if (numRows < 0)
 859             {
 860                 // If rows deleted ...
 861                 if ((size_t)row2 >= pos - numRows)
 862                 {
 863                     // ...either decrement row counter (if row still exists)...
 864                     coords2.SetRow(row2 + numRows);
 865                     if ( (size_t) row1 >= pos)
 866                         coords1.SetRow( wxMax(row1 + numRows, (int) pos) );
 867
 868                 }
 869                 else
 870                 {
 871                     if ( (size_t) row1 >= pos)
 872                     {
 873                         // ...or remove the attribute
 874                         m_blockSelectionTopLeft.RemoveAt(n);
 875                         m_blockSelectionBottomRight.RemoveAt(n);
 876                         n--; count--;
 877                     }
 878                     else
 879                         coords2.SetRow(pos);
 880                 }
 881             }
 882         }
 883     }
 884
 885     count = m_rowSelection.GetCount();
 886     for ( n = 0; n < count; n++ )
 887     {
 888         int & rowOrCol = m_rowSelection[n];
 889         if ( (size_t)rowOrCol >= pos )
 890         {
 891             if ( numRows > 0 )
 892             {
 893                 // If rows inserted, include row counter where necessary
 894                 rowOrCol += numRows;
 895             }
 896             else if ( numRows < 0)
 897             {
 898                 // If rows deleted, either decrement row counter (if row still exists)
 899                 if ((size_t)rowOrCol >= pos - numRows)
 900                     rowOrCol += numRows;
 901                 else
 902                 {
 903                     m_rowSelection.RemoveAt(n);
 904                     n--; count--;
 905                 }
 906             }
 907         }
 908     }
 909 }
 910
 911 void wxGridSelection::UpdateCols( size_t pos, int numCols )
 912 {
 913     size_t count = m_cellSelection.GetCount();
 914     size_t n;
 915     for ( n = 0; n < count; n++ )
 916     {
 917         wxGridCellCoords& coords = m_cellSelection[n];
 918         wxCoord col = coords.GetCol();
 919         if ((size_t)col >= pos)
 920         {
 921             if (numCols > 0)
 922             {
 923                 // If rows inserted, increase row counter where necessary
 924                 coords.SetCol(col + numCols);
 925             }
 926             else if (numCols < 0)
 927             {
 928                 // If rows deleted ...
 929                 if ((size_t)col >= pos - numCols)
 930                 {
 931                     // ...either decrement row counter (if row still exists)...
 932                     coords.SetCol(col + numCols);
 933                 }
 934                 else
 935                 {
 936                     // ...or remove the attribute
 937                     m_cellSelection.RemoveAt(n);
 938                     n--; count--;
 939                 }
 940             }
 941         }
 942     }
 943
 944     count = m_blockSelectionTopLeft.GetCount();
 945     for ( n = 0; n < count; n++ )
 946     {
 947         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 948         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 949         wxCoord col1 = coords1.GetCol();
 950         wxCoord col2 = coords2.GetCol();
 951         if ((size_t)col2 >= pos)
 952         {
 953             if (numCols > 0)
 954             {
 955                 // If rows inserted, increase row counter where necessary
 956                 coords2.SetCol(col2 + numCols);
 957                 if ( (size_t)col1 >= pos )
 958                     coords1.SetCol(col1 + numCols);
 959             }
 960             else if (numCols < 0)
 961             {
 962                 // If cols deleted ...
 963                 if ((size_t)col2 >= pos - numCols)
 964                 {
 965                     // ...either decrement col counter (if col still exists)...
 966                     coords2.SetCol(col2 + numCols);
 967                     if ( (size_t) col1 >= pos)
 968                         coords1.SetCol( wxMax(col1 + numCols, (int) pos) );
 969
 970                 }
 971                 else
 972                 {
 973                     if ( (size_t) col1 >= pos)
 974                     {
 975                         // ...or remove the attribute
 976                         m_blockSelectionTopLeft.RemoveAt(n);
 977                         m_blockSelectionBottomRight.RemoveAt(n);
 978                         n--; count--;
 979                     }
 980                     else
 981                         coords2.SetCol(pos);
 982                 }
 983             }
 984         }
 985     }
 986
 987     count = m_colSelection.GetCount();
 988     for ( n = 0; n < count; n++ )
 989     {
 990         int & rowOrCol = m_colSelection[n];
 991         if ( (size_t)rowOrCol >= pos )
 992         {
 993             if ( numCols > 0 )
 994             {
 995                 // If cols inserted, include col counter where necessary
 996                 rowOrCol += numCols;
 997             }
 998             else if ( numCols < 0)
 999             {
1000                 // If cols deleted, either decrement col counter (if col still exists)
1001                 if ((size_t)rowOrCol >= pos - numCols)
1002                     rowOrCol += numCols;
1003                 else
1004                 {
1005                     m_colSelection.RemoveAt(n);
1006                     n--; count--;
1007                 }
1008             }
1009         }
1010     }
1011 }
1012
1013 int wxGridSelection::BlockContain( int topRow1, int leftCol1,
1014                                    int bottomRow1, int rightCol1,
1015                                    int topRow2, int leftCol2,
1016                                    int bottomRow2, int rightCol2 )
1017 // returns 1, if Block1 contains Block2,
1018 //        -1, if Block2 contains Block1,
1019 //         0, otherwise
1020 {
1021     if ( topRow1 <= topRow2 && bottomRow2 <= bottomRow1 &&
1022          leftCol1 <= leftCol2 && rightCol2 <= rightCol1 )
1023         return 1;
1024     else if ( topRow2 <= topRow1 && bottomRow1 <= bottomRow2 &&
1025               leftCol2 <= leftCol1 && rightCol1 <= rightCol2 )
1026         return -1;
1027     return 0;
1028 }
1029
1030 #endif