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:      $Id$
   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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  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 wxUSE_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                                  FALSE, FALSE, FALSE, FALSE, 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                                  FALSE, FALSE, FALSE, FALSE, FALSE );
 180                 }
 181             }
 182         }
 183         m_selectionMode = selmode;
 184     }
 185 }
 186
 187 void wxGridSelection::SelectRow( int row,
 188                                  bool ControlDown,  bool ShiftDown,
 189                                  bool AltDown, bool MetaDown )
 190 {
 191     if ( m_selectionMode == wxGrid::wxGridSelectColumns )
 192         return;
 193     size_t count, n;
 194
 195     // Remove single cells contained in newly selected block.
 196     if ( m_selectionMode == wxGrid::wxGridSelectCells )
 197     {
 198         count = m_cellSelection.GetCount();
 199         for ( n = 0; n < count; n++ )
 200         {
 201             wxGridCellCoords& coords = m_cellSelection[n];
 202             if ( BlockContainsCell( row, 0, row, m_grid->GetNumberCols() - 1,
 203                                     coords.GetRow(), coords.GetCol() ) )
 204             {
 205                 m_cellSelection.RemoveAt(n);
 206                 n--; count--;
 207             }
 208         }
 209     }
 210
 211     // Simplify list of selected blocks (if possible)
 212     count = m_blockSelectionTopLeft.GetCount();
 213     bool done = FALSE;
 214     for ( n = 0; n < count; n++ )
 215     {
 216         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 217         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 218
 219         // Remove block if it is a subset of the row
 220         if ( coords1.GetRow() == row && row == coords2.GetRow() )
 221         {
 222             m_blockSelectionTopLeft.RemoveAt(n);
 223             m_blockSelectionBottomRight.RemoveAt(n);
 224             n--; count--;
 225         }
 226         else if ( coords1.GetCol() == 0  &&
 227                   coords2.GetCol() == m_grid->GetNumberCols() - 1 )
 228         {
 229             // silently return, if row is contained in block
 230             if ( coords1.GetRow() <= row && row <= coords2.GetRow() )
 231                 return;
 232             // expand block, if it touched row
 233             else if ( coords1.GetRow() == row + 1)
 234             {
 235                 coords1.SetRow(row);
 236                 done = TRUE;
 237             }
 238             else if ( coords2.GetRow() == row - 1)
 239             {
 240                 coords2.SetRow(row);
 241                 done = TRUE;
 242             }
 243         }
 244     }
 245
 246     // Unless we successfully handled the row,
 247     // check whether row is already selected.
 248     if ( !done )
 249     {
 250         count = m_rowSelection.GetCount();
 251         for ( n = 0; n < count; n++ )
 252         {
 253             if ( row == m_rowSelection[n] )
 254                 return;
 255         }
 256
 257         // Add row to selection
 258         m_rowSelection.Add(row);
 259     }
 260
 261     // Update View:
 262     wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, 0 ),
 263                                           wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
 264     if ( !m_grid->GetBatchCount() )
 265         ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 266
 267     // Send Event
 268     wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 269                                     wxEVT_GRID_RANGE_SELECT,
 270                                     m_grid,
 271                                     wxGridCellCoords( row, 0 ),
 272                                     wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ),
 273                                     TRUE,
 274                                     ControlDown,  ShiftDown,
 275                                     AltDown, MetaDown );
 276
 277     m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 278 }
 279
 280 void wxGridSelection::SelectCol( int col,
 281                                  bool ControlDown,  bool ShiftDown,
 282                                  bool AltDown, bool MetaDown )
 283 {
 284     if ( m_selectionMode == wxGrid::wxGridSelectRows )
 285         return;
 286     size_t count, n;
 287
 288     // Remove single cells contained in newly selected block.
 289     if ( m_selectionMode == wxGrid::wxGridSelectCells )
 290     {
 291         count = m_cellSelection.GetCount();
 292         for ( n = 0; n < count; n++ )
 293         {
 294             wxGridCellCoords& coords = m_cellSelection[n];
 295             if ( BlockContainsCell( 0, col, m_grid->GetNumberRows() - 1, col,
 296                                     coords.GetRow(), coords.GetCol() ) )
 297             {
 298                 m_cellSelection.RemoveAt(n);
 299                 n--; count--;
 300             }
 301         }
 302     }
 303
 304     // Simplify list of selected blocks (if possible)
 305     count = m_blockSelectionTopLeft.GetCount();
 306     bool done = FALSE;
 307     for ( n = 0; n < count; n++ )
 308     {
 309         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 310         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 311
 312         // Remove block if it is a subset of the column
 313         if ( coords1.GetCol() == col && col == coords2.GetCol() )
 314         {
 315             m_blockSelectionTopLeft.RemoveAt(n);
 316             m_blockSelectionBottomRight.RemoveAt(n);
 317             n--; count--;
 318         }
 319         else if ( coords1.GetRow() == 0  &&
 320                   coords2.GetRow() == m_grid->GetNumberRows() - 1 )
 321         {
 322             // silently return, if row is contained in block
 323             if ( coords1.GetCol() <= col && col <= coords2.GetCol() )
 324                 return;
 325             // expand block, if it touched col
 326             else if ( coords1.GetCol() == col + 1)
 327             {
 328                 coords1.SetCol(col);
 329                 done = TRUE;
 330             }
 331             else if ( coords2.GetCol() == col - 1)
 332             {
 333                 coords2.SetCol(col);
 334                 done = TRUE;
 335             }
 336         }
 337     }
 338
 339     // Unless we successfully handled the column,
 340     // Check whether col is already selected.
 341     if ( !done )
 342     {
 343         count = m_colSelection.GetCount();
 344         for ( n = 0; n < count; n++ )
 345         {
 346             if ( col == m_colSelection[n] )
 347                 return;
 348         }
 349
 350         // Add col to selection
 351         m_colSelection.Add(col);
 352     }
 353
 354     // Update View:
 355     wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( 0, col ),
 356                                           wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
 357     if ( !m_grid->GetBatchCount() )
 358         ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 359
 360     // Send Event
 361     wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 362                                     wxEVT_GRID_RANGE_SELECT,
 363                                     m_grid,
 364                                     wxGridCellCoords( 0, col ),
 365                                     wxGridCellCoords( m_grid->GetNumberRows() - 1, col ),
 366                                     TRUE,
 367                                     ControlDown,  ShiftDown,
 368                                     AltDown, MetaDown );
 369
 370     m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 371 }
 372
 373 void wxGridSelection::SelectBlock( int topRow, int leftCol,
 374                                    int bottomRow, int rightCol,
 375                                    bool ControlDown, bool ShiftDown,
 376                                    bool AltDown, bool MetaDown,
 377                                    bool sendEvent )
 378 {
 379     // Fix the coordinates of the block if needed.
 380     if ( m_selectionMode == wxGrid::wxGridSelectRows )
 381     {
 382         leftCol = 0;
 383         rightCol = m_grid->GetNumberCols() - 1;
 384     }
 385     else if ( m_selectionMode == wxGrid::wxGridSelectColumns )
 386     {
 387         topRow = 0;
 388         bottomRow = m_grid->GetNumberRows() - 1;
 389     }
 390     if ( topRow > bottomRow )
 391     {
 392         int temp = topRow;
 393         topRow = bottomRow;
 394         bottomRow = temp;
 395     }
 396
 397     if ( leftCol > rightCol )
 398     {
 399         int temp = leftCol;
 400         leftCol = rightCol;
 401         rightCol = temp;
 402     }
 403
 404     // Handle single cell selection in SelectCell.
 405     // (MB: added check for selection mode here to prevent
 406     //  crashes if, for example, we are select rows and the
 407     //  grid only has 1 col)
 408     if ( m_selectionMode == wxGrid::wxGridSelectCells &&
 409          topRow == bottomRow && leftCol == rightCol )
 410         SelectCell( topRow, leftCol, ControlDown,  ShiftDown,
 411                     AltDown, MetaDown, sendEvent );
 412
 413     size_t count, n;
 414     // Remove single cells contained in newly selected block.
 415     if ( m_selectionMode == wxGrid::wxGridSelectCells )
 416     {
 417         count = m_cellSelection.GetCount();
 418         for ( n = 0; n < count; n++ )
 419         {
 420             wxGridCellCoords& coords = m_cellSelection[n];
 421             if ( BlockContainsCell( topRow, leftCol, bottomRow, rightCol,
 422                                     coords.GetRow(), coords.GetCol() ) )
 423             {
 424                 m_cellSelection.RemoveAt(n);
 425                 n--; count--;
 426             }
 427         }
 428     }
 429
 430     // If a block containing the selection is already selected, return,
 431     // if a block contained in the selection is found, remove it.
 432
 433     count = m_blockSelectionTopLeft.GetCount();
 434     for ( n = 0; n < count; n++ )
 435     {
 436         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 437         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 438         switch ( BlockContain( coords1.GetRow(), coords1.GetCol(),
 439                                coords2.GetRow(), coords2.GetCol(),
 440                                topRow, leftCol, bottomRow, rightCol ) )
 441         {
 442           case 1:
 443             return;
 444           case -1:
 445             m_blockSelectionTopLeft.RemoveAt(n);
 446             m_blockSelectionBottomRight.RemoveAt(n);
 447             n--; count--;
 448           default:
 449             ;
 450         }
 451     }
 452
 453     // If a row containing the selection is already selected, return,
 454     // if a row contained in newly selected block is found, remove it.
 455     if ( m_selectionMode != wxGrid::wxGridSelectColumns )
 456     {
 457         count = m_rowSelection.GetCount();
 458         for ( n = 0; n < count; n++ )
 459         {
 460             switch ( BlockContain( m_rowSelection[n], 0,
 461                                    m_rowSelection[n], m_grid->GetNumberCols()-1,
 462                                    topRow, leftCol, bottomRow, rightCol ) )
 463             {
 464               case 1:
 465                 return;
 466               case -1:
 467                 m_rowSelection.RemoveAt(n);
 468                 n--; count--;
 469               default:
 470                 ;
 471             }
 472         }
 473     }
 474     if ( m_selectionMode != wxGrid::wxGridSelectRows )
 475     {
 476         count = m_colSelection.GetCount();
 477         for ( n = 0; n < count; n++ )
 478         {
 479             switch ( BlockContain( 0, m_colSelection[n],
 480                                    m_grid->GetNumberRows()-1, m_colSelection[n],
 481                                    topRow, leftCol, bottomRow, rightCol ) )
 482             {
 483               case 1:
 484                 return;
 485               case -1:
 486                 m_colSelection.RemoveAt(n);
 487                 n--; count--;
 488               default:
 489                 ;
 490             }
 491         }
 492     }
 493     m_blockSelectionTopLeft.Add( wxGridCellCoords( topRow, leftCol ) );
 494     m_blockSelectionBottomRight.Add( wxGridCellCoords( bottomRow, rightCol ) );
 495
 496     // Update View:
 497     wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( topRow, leftCol ),
 498                                           wxGridCellCoords( bottomRow, rightCol ) );
 499     if ( !m_grid->GetBatchCount() )
 500         ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 501
 502     // Send Event, if not disabled.
 503     if ( sendEvent )
 504     {
 505         wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 506                                         wxEVT_GRID_RANGE_SELECT,
 507                                         m_grid,
 508                                         wxGridCellCoords( topRow, leftCol ),
 509                                         wxGridCellCoords( bottomRow, rightCol ),
 510                                         TRUE,
 511                                         ControlDown, ShiftDown,
 512                                         AltDown, MetaDown );
 513         m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 514     }
 515 }
 516
 517 void wxGridSelection::SelectCell( int row, int col,
 518                                   bool ControlDown, bool ShiftDown,
 519                                   bool AltDown, bool MetaDown,
 520                                   bool sendEvent )
 521 {
 522     if ( m_selectionMode == wxGrid::wxGridSelectRows )
 523     {
 524         SelectBlock(row, 0, row, m_grid->GetNumberCols() - 1,
 525                     ControlDown, ShiftDown, AltDown, MetaDown, sendEvent);
 526         return;
 527     }
 528     else if ( m_selectionMode == wxGrid::wxGridSelectColumns )
 529     {
 530         SelectBlock(0, col, m_grid->GetNumberRows() - 1, col,
 531                     ControlDown, ShiftDown, AltDown, MetaDown, sendEvent);
 532         return;
 533     }
 534     else if ( IsInSelection ( row, col ) )
 535         return;
 536     m_cellSelection.Add( wxGridCellCoords( row, col ) );
 537
 538     // Update View:
 539     wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, col ),
 540                                           wxGridCellCoords( row, col ) );
 541     if ( !m_grid->GetBatchCount() )
 542         ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 543
 544     // Send event
 545     if (sendEvent)
 546     {
 547         wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 548                                         wxEVT_GRID_RANGE_SELECT,
 549                                         m_grid,
 550                                         wxGridCellCoords( row, col ),
 551                                         wxGridCellCoords( row, col ),
 552                                         TRUE,
 553                                         ControlDown, ShiftDown,
 554                                         AltDown, MetaDown);
 555         m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 556     }
 557 }
 558
 559 void wxGridSelection::ToggleCellSelection( int row, int col,
 560                                            bool ControlDown, bool ShiftDown,
 561                                            bool AltDown, bool MetaDown )
 562 {
 563     // if the cell is not selected, select it
 564     if ( !IsInSelection ( row, col ) )
 565     {
 566         SelectCell( row, col, ControlDown, ShiftDown,
 567                     AltDown, MetaDown );
 568         return;
 569     }
 570
 571     // otherwise deselect it. This can be simple or more or
 572     // less difficult, depending on how the cell is selected.
 573     size_t count, n;
 574
 575     // The simplest case: The cell is contained in m_cellSelection
 576     // Then it can't be contained in rows/cols/block (since those
 577     // would remove the cell from m_cellSelection on creation), so
 578     // we just have to remove it from m_cellSelection.
 579
 580     if ( m_selectionMode == wxGrid::wxGridSelectCells )
 581     {
 582         count = m_cellSelection.GetCount();
 583         for ( n = 0; n < count; n++ )
 584         {
 585             wxGridCellCoords& coords = m_cellSelection[n];
 586             if ( row == coords.GetRow() && col == coords.GetCol() )
 587             {
 588                 wxRect r;
 589                 r = m_grid->BlockToDeviceRect( m_cellSelection[n],
 590                                                m_cellSelection[n] );
 591                 m_cellSelection.RemoveAt(n);
 592                 if ( !m_grid->GetBatchCount() )
 593                     ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 594
 595                 // Send event
 596                 wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 597                                                 wxEVT_GRID_RANGE_SELECT,
 598                                                 m_grid,
 599                                                 wxGridCellCoords( row, col ),
 600                                                 wxGridCellCoords( row, col ),
 601                                                 FALSE,
 602                                                 ControlDown, ShiftDown,
 603                                                 AltDown, MetaDown );
 604                 m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 605                 return;
 606             }
 607         }
 608     }
 609
 610     // The most difficult case: The cell is member of one or even several
 611     // blocks. Split each such block in up to 4 new parts, that don't
 612     // contain the cell to be selected, like this:
 613     // |---------------------------|
 614     // |                           |
 615     // |           part 1          |
 616     // |                           |
 617     // |---------------------------|
 618     // |   part 3   |x|   part 4   |
 619     // |---------------------------|
 620     // |                           |
 621     // |           part 2          |
 622     // |                           |
 623     // |---------------------------|
 624     //   (The x marks the newly deselected cell).
 625     // Note: in row selection mode, we only need part1 and part2;
 626     //       in column selection mode, we only need part 3 and part4,
 627     //          which are expanded to whole columns automatically!
 628
 629     count = m_blockSelectionTopLeft.GetCount();
 630     for ( n = 0; n < count; n++ )
 631       {
 632         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 633         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 634         int topRow = coords1.GetRow();
 635         int leftCol = coords1.GetCol();
 636         int bottomRow = coords2.GetRow();
 637         int rightCol = coords2.GetCol();
 638         if ( BlockContainsCell( topRow, leftCol, bottomRow, rightCol,
 639                                 row, col ) )
 640         {
 641             // remove the block
 642             m_blockSelectionTopLeft.RemoveAt(n);
 643             m_blockSelectionBottomRight.RemoveAt(n);
 644             n--; count--;
 645             // add up to 4 smaller blocks and set update region
 646             if ( m_selectionMode != wxGrid::wxGridSelectColumns )
 647             {
 648                 if ( topRow < row )
 649                     SelectBlock( topRow, leftCol, row - 1, rightCol,
 650                                  FALSE, FALSE, FALSE, FALSE, FALSE );
 651                 if ( bottomRow > row )
 652                     SelectBlock( row + 1, leftCol, bottomRow, rightCol,
 653                                  FALSE, FALSE, FALSE, FALSE, FALSE );
 654             }
 655             if ( m_selectionMode != wxGrid::wxGridSelectRows )
 656             {
 657                 if ( leftCol < col )
 658                     SelectBlock( row, leftCol, row, col - 1,
 659                                  FALSE, FALSE, FALSE, FALSE, FALSE );
 660                 if ( rightCol > col )
 661                     SelectBlock( row, col + 1, row, rightCol,
 662                                  FALSE, FALSE, FALSE, FALSE, FALSE );
 663             }
 664         }
 665     }
 666
 667     // remove a cell from a row, adding up to two new blocks
 668     if ( m_selectionMode != wxGrid::wxGridSelectColumns )
 669     {
 670         count = m_rowSelection.GetCount();
 671         for ( n = 0; n < count; n++ )
 672         {
 673             if ( m_rowSelection[n] == row )
 674             {
 675                 m_rowSelection.RemoveAt(n);
 676                 n--; count--;
 677                 if (m_selectionMode == wxGrid::wxGridSelectCells)
 678                 {
 679                     if ( col > 0 )
 680                         SelectBlock( row, 0, row, col - 1,
 681                                      FALSE, FALSE, FALSE, FALSE, FALSE );
 682                     if ( col < m_grid->GetNumberCols() - 1 )
 683                         SelectBlock( row, col + 1,
 684                                      row, m_grid->GetNumberCols() - 1,
 685                                      FALSE, FALSE, FALSE, FALSE, FALSE );
 686                 }
 687             }
 688         }
 689     }
 690
 691     // remove a cell from a column, adding up to two new blocks
 692     if ( m_selectionMode != wxGrid::wxGridSelectRows )
 693     {
 694         count = m_colSelection.GetCount();
 695         for ( n = 0; n < count; n++ )
 696         {
 697             if ( m_colSelection[n] == col )
 698             {
 699                 m_colSelection.RemoveAt(n);
 700                 n--; count--;
 701                 if (m_selectionMode == wxGrid::wxGridSelectCells)
 702                 {
 703                     if ( row > 0 )
 704                         SelectBlock( 0, col, row - 1, col,
 705                                      FALSE, FALSE, FALSE, FALSE, FALSE );
 706                     if ( row < m_grid->GetNumberRows() - 1 )
 707                         SelectBlock( row + 1, col,
 708                                      m_grid->GetNumberRows() - 1, col,
 709                                      FALSE, FALSE, FALSE, FALSE, FALSE );
 710                 }
 711             }
 712         }
 713     }
 714
 715     // Refresh the screen and send the event; according to m_selectionMode,
 716     // we need to either update only the cell, or the whole row/column.
 717     wxRect r;
 718     switch (m_selectionMode)
 719     {
 720       case wxGrid::wxGridSelectCells:
 721       {
 722           r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, col ),
 723                                          wxGridCellCoords( row, col ) );
 724           if ( !m_grid->GetBatchCount() )
 725               ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 726           wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 727                                           wxEVT_GRID_RANGE_SELECT,
 728                                           m_grid,
 729                                           wxGridCellCoords( row, col ),
 730                                           wxGridCellCoords( row, col ),
 731                                           FALSE,
 732                                           ControlDown, ShiftDown,
 733                                           AltDown, MetaDown );
 734           m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 735           break;
 736       }
 737       case wxGrid::wxGridSelectRows:
 738       {
 739           r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, 0 ),
 740                                          wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
 741           if ( !m_grid->GetBatchCount() )
 742               ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 743           wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 744                                           wxEVT_GRID_RANGE_SELECT,
 745                                           m_grid,
 746                                           wxGridCellCoords( row, 0 ),
 747                                           wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ),
 748                                           FALSE,
 749                                           ControlDown, ShiftDown,
 750                                           AltDown, MetaDown );
 751           m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 752           break;
 753       }
 754       case wxGrid::wxGridSelectColumns:
 755       {
 756           r = m_grid->BlockToDeviceRect( wxGridCellCoords( 0, col ),
 757                                          wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
 758           if ( !m_grid->GetBatchCount() )
 759               ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 760           wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 761                                           wxEVT_GRID_RANGE_SELECT,
 762                                           m_grid,
 763                                           wxGridCellCoords( 0, col ),
 764                                           wxGridCellCoords( m_grid->GetNumberRows() - 1, col ),
 765                                           FALSE,
 766                                           ControlDown, ShiftDown,
 767                                           AltDown, MetaDown );
 768           m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 769           break;
 770       }
 771     }
 772 }
 773
 774 void wxGridSelection::ClearSelection()
 775 {
 776     size_t n;
 777
 778     // deselect all invidiual cells and update the screen
 779     if ( m_selectionMode == wxGrid::wxGridSelectCells )
 780     {
 781
 782         while( ( n = m_cellSelection.GetCount() ) > 0)
 783         {
 784             wxRect r;
 785             n--;
 786             r = m_grid->BlockToDeviceRect( m_cellSelection[n],
 787                                            m_cellSelection[n] );
 788             m_cellSelection.RemoveAt(n);
 789             if ( !m_grid->GetBatchCount() )
 790                 ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 791         }
 792     }
 793
 794     // deselect all blocks and update the screen
 795     while( ( n = m_blockSelectionTopLeft.GetCount() ) > 0)
 796     {
 797         wxRect r;
 798         n--;
 799         r = m_grid->BlockToDeviceRect( m_blockSelectionTopLeft[n],
 800                                        m_blockSelectionBottomRight[n] );
 801         m_blockSelectionTopLeft.RemoveAt(n);
 802         m_blockSelectionBottomRight.RemoveAt(n);
 803         if ( !m_grid->GetBatchCount() )
 804             ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 805     }
 806
 807     // deselect all rows and update the screen
 808     if ( m_selectionMode != wxGrid::wxGridSelectColumns )
 809     {
 810         while( ( n = m_rowSelection.GetCount() ) > 0)
 811         {
 812             n--;
 813             int & row = m_rowSelection[n];
 814             wxRect r;
 815             r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, 0 ),
 816                                            wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
 817             m_rowSelection.RemoveAt(n);
 818             if ( !m_grid->GetBatchCount() )
 819                 ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 820         }
 821     }
 822
 823     // deselect all columns and update the screen
 824     if ( m_selectionMode != wxGrid::wxGridSelectRows )
 825     {
 826         while( ( n = m_colSelection.GetCount() ) > 0)
 827         {
 828             n--;
 829             int & col = m_colSelection[n];
 830             wxRect r;
 831             r = m_grid->BlockToDeviceRect( wxGridCellCoords( 0, col ),
 832                                            wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
 833             m_colSelection.RemoveAt(n);
 834             if ( !m_grid->GetBatchCount() )
 835                 ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 836         }
 837     }
 838
 839     // One deselection event, indicating deselection of _all_ cells.
 840     // (No finer grained events for each of the smaller regions
 841     //  deselected above!)
 842     wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 843                                     wxEVT_GRID_RANGE_SELECT,
 844                                     m_grid,
 845                                     wxGridCellCoords( 0, 0 ),
 846                                     wxGridCellCoords( m_grid->GetNumberRows() - 1,
 847                                                       m_grid->GetNumberCols() - 1 ),
 848                                     FALSE );
 849
 850     m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 851 }
 852
 853
 854 void wxGridSelection::UpdateRows( size_t pos, int numRows )
 855 {
 856     size_t count = m_cellSelection.GetCount();
 857     size_t n;
 858     for ( n = 0; n < count; n++ )
 859     {
 860         wxGridCellCoords& coords = m_cellSelection[n];
 861         wxCoord row = coords.GetRow();
 862         if ((size_t)row >= pos)
 863         {
 864             if (numRows > 0)
 865             {
 866                 // If rows inserted, increase row counter where necessary
 867                 coords.SetRow(row + numRows);
 868             }
 869             else if (numRows < 0)
 870             {
 871                 // If rows deleted ...
 872                 if ((size_t)row >= pos - numRows)
 873                 {
 874                     // ...either decrement row counter (if row still exists)...
 875                     coords.SetRow(row + numRows);
 876                 }
 877                 else
 878                 {
 879                     // ...or remove the attribute
 880                     m_cellSelection.RemoveAt(n);
 881                     n--; count--;
 882                 }
 883             }
 884         }
 885     }
 886
 887     count = m_blockSelectionTopLeft.GetCount();
 888     for ( n = 0; n < count; n++ )
 889     {
 890         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 891         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 892         wxCoord row1 = coords1.GetRow();
 893         wxCoord row2 = coords2.GetRow();
 894         if ((size_t)row2 >= pos)
 895         {
 896             if (numRows > 0)
 897             {
 898                 // If rows inserted, increase row counter where necessary
 899                 coords2.SetRow(row2 + numRows);
 900                 if ( (size_t)row1 >= pos )
 901                     coords1.SetRow(row1 + numRows);
 902             }
 903             else if (numRows < 0)
 904             {
 905                 // If rows deleted ...
 906                 if ((size_t)row2 >= pos - numRows)
 907                 {
 908                     // ...either decrement row counter (if row still exists)...
 909                     coords2.SetRow(row2 + numRows);
 910                     if ( (size_t) row1 >= pos)
 911                         coords1.SetRow( wxMax(row1 + numRows, (int) pos) );
 912
 913                 }
 914                 else
 915                 {
 916                     if ( (size_t) row1 >= pos)
 917                     {
 918                         // ...or remove the attribute
 919                         m_blockSelectionTopLeft.RemoveAt(n);
 920                         m_blockSelectionBottomRight.RemoveAt(n);
 921                         n--; count--;
 922                     }
 923                     else
 924                         coords2.SetRow(pos);
 925                 }
 926             }
 927         }
 928     }
 929
 930     count = m_rowSelection.GetCount();
 931     for ( n = 0; n < count; n++ )
 932     {
 933     int  rowOrCol_ = m_rowSelection [ n ];
 934
 935       if ( ( size_t ) rowOrCol_ >= pos )
 936       {
 937           if ( numRows > 0 )
 938           {
 939               m_rowSelection [ n ] += numRows;
 940           }
 941           else if ( numRows < 0 )
 942           {
 943               if ( ( size_t ) rowOrCol_ >= ( pos - numRows ) )
 944                   m_rowSelection [ n ] += numRows;
 945               else
 946               {
 947                   m_rowSelection.RemoveAt ( n );
 948                   n--;
 949                   count--;
 950               }
 951           }
 952       }
 953     }
 954     // No need to touch selected columns, unless we removed _all_
 955     // rows, in this case, we remove all columns from the selection.
 956
 957     if ( !m_grid->GetNumberRows() )
 958         m_colSelection.Clear();
 959 }
 960
 961
 962 void wxGridSelection::UpdateCols( size_t pos, int numCols )
 963 {
 964     size_t count = m_cellSelection.GetCount();
 965     size_t n;
 966     for ( n = 0; n < count; n++ )
 967     {
 968         wxGridCellCoords& coords = m_cellSelection[n];
 969         wxCoord col = coords.GetCol();
 970         if ((size_t)col >= pos)
 971         {
 972             if (numCols > 0)
 973             {
 974                 // If rows inserted, increase row counter where necessary
 975                 coords.SetCol(col + numCols);
 976             }
 977             else if (numCols < 0)
 978             {
 979                 // If rows deleted ...
 980                 if ((size_t)col >= pos - numCols)
 981                 {
 982                     // ...either decrement row counter (if row still exists)...
 983                     coords.SetCol(col + numCols);
 984                 }
 985                 else
 986                 {
 987                     // ...or remove the attribute
 988                     m_cellSelection.RemoveAt(n);
 989                     n--; count--;
 990                 }
 991             }
 992         }
 993     }
 994
 995     count = m_blockSelectionTopLeft.GetCount();
 996     for ( n = 0; n < count; n++ )
 997     {
 998         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 999         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
1000         wxCoord col1 = coords1.GetCol();
1001         wxCoord col2 = coords2.GetCol();
1002         if ((size_t)col2 >= pos)
1003         {
1004             if (numCols > 0)
1005             {
1006                 // If rows inserted, increase row counter where necessary
1007                 coords2.SetCol(col2 + numCols);
1008                 if ( (size_t)col1 >= pos )
1009                     coords1.SetCol(col1 + numCols);
1010             }
1011             else if (numCols < 0)
1012             {
1013                 // If cols deleted ...
1014                 if ((size_t)col2 >= pos - numCols)
1015                 {
1016                     // ...either decrement col counter (if col still exists)...
1017                     coords2.SetCol(col2 + numCols);
1018                     if ( (size_t) col1 >= pos)
1019                         coords1.SetCol( wxMax(col1 + numCols, (int) pos) );
1020
1021                 }
1022                 else
1023                 {
1024                     if ( (size_t) col1 >= pos)
1025                     {
1026                         // ...or remove the attribute
1027                         m_blockSelectionTopLeft.RemoveAt(n);
1028                         m_blockSelectionBottomRight.RemoveAt(n);
1029                         n--; count--;
1030                     }
1031                     else
1032                         coords2.SetCol(pos);
1033                 }
1034             }
1035         }
1036     }
1037
1038     count = m_colSelection.GetCount();
1039     for ( n = 0; n < count; n++ )
1040     {
1041
1042       int   rowOrCol = m_colSelection [ n ];
1043         if ( ( size_t ) rowOrCol >= pos )
1044         {
1045             if ( numCols > 0 )
1046                 m_colSelection [ n ] += numCols;
1047             else if ( numCols < 0 )
1048             {
1049                 if ( ( size_t ) rowOrCol >= ( pos -numCols ) )
1050                     m_colSelection [ n ] += numCols;
1051                 else
1052                 {
1053                     m_colSelection.RemoveAt ( n );
1054                     n--;
1055                     count--;
1056                 }
1057             }
1058         }
1059
1060     }
1061
1062     // No need to touch selected rows, unless we removed _all_
1063     // columns, in this case, we remove all rows from the selection.
1064     if ( !m_grid->GetNumberCols() )
1065         m_rowSelection.Clear();
1066 }
1067
1068
1069 int wxGridSelection::BlockContain( int topRow1, int leftCol1,
1070                                    int bottomRow1, int rightCol1,
1071                                    int topRow2, int leftCol2,
1072                                    int bottomRow2, int rightCol2 )
1073 // returns 1, if Block1 contains Block2,
1074 //        -1, if Block2 contains Block1,
1075 //         0, otherwise
1076 {
1077     if ( topRow1 <= topRow2 && bottomRow2 <= bottomRow1 &&
1078          leftCol1 <= leftCol2 && rightCol2 <= rightCol1 )
1079         return 1;
1080     else if ( topRow2 <= topRow1 && bottomRow1 <= bottomRow2 &&
1081               leftCol2 <= leftCol1 && rightCol1 <= rightCol2 )
1082         return -1;
1083     return 0;
1084 }
1085
1086 #endif