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,
 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     if ( topRow == bottomRow && leftCol == rightCol )
 406         SelectCell( topRow, leftCol, ControlDown,  ShiftDown,
 407                     AltDown, MetaDown, sendEvent );
 408
 409     size_t count, n;
 410     // Remove single cells contained in newly selected block.
 411     if ( m_selectionMode == wxGrid::wxGridSelectCells )
 412     {
 413         count = m_cellSelection.GetCount();
 414         for ( n = 0; n < count; n++ )
 415         {
 416             wxGridCellCoords& coords = m_cellSelection[n];
 417             if ( BlockContainsCell( topRow, leftCol, bottomRow, rightCol,
 418                                     coords.GetRow(), coords.GetCol() ) )
 419             {
 420                 m_cellSelection.RemoveAt(n);
 421                 n--; count--;
 422             }
 423         }
 424     }
 425
 426     // If a block containing the selection is already selected, return,
 427     // if a block contained in the selection is found, remove it.
 428
 429     count = m_blockSelectionTopLeft.GetCount();
 430     for ( n = 0; n < count; n++ )
 431     {
 432         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 433         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 434         switch ( BlockContain( coords1.GetRow(), coords1.GetCol(),
 435                                coords2.GetRow(), coords2.GetCol(),
 436                                topRow, leftCol, bottomRow, rightCol ) )
 437         {
 438           case 1:
 439             return;
 440           case -1:
 441             m_blockSelectionTopLeft.RemoveAt(n);
 442             m_blockSelectionBottomRight.RemoveAt(n);
 443             n--; count--;
 444           default:
 445             ;
 446         }
 447     }
 448
 449     // If a row containing the selection is already selected, return,
 450     // if a row contained in newly selected block is found, remove it.
 451     if ( m_selectionMode != wxGrid::wxGridSelectColumns )
 452     {
 453         count = m_rowSelection.GetCount();
 454         for ( n = 0; n < count; n++ )
 455         {
 456             switch ( BlockContain( m_rowSelection[n], 0,
 457                                    m_rowSelection[n], m_grid->GetNumberCols()-1,
 458                                    topRow, leftCol, bottomRow, rightCol ) )
 459             {
 460               case 1:
 461                 return;
 462               case -1:
 463                 m_rowSelection.RemoveAt(n);
 464                 n--; count--;
 465               default:
 466                 ;
 467             }
 468         }
 469     }
 470     if ( m_selectionMode != wxGrid::wxGridSelectRows )
 471     {
 472         count = m_colSelection.GetCount();
 473         for ( n = 0; n < count; n++ )
 474         {
 475             switch ( BlockContain( 0, m_colSelection[n],
 476                                    m_grid->GetNumberRows()-1, m_colSelection[n],
 477                                    topRow, leftCol, bottomRow, rightCol ) )
 478             {
 479               case 1:
 480                 return;
 481               case -1:
 482                 m_colSelection.RemoveAt(n);
 483                 n--; count--;
 484               default:
 485                 ;
 486             }
 487         }
 488     }
 489     m_blockSelectionTopLeft.Add( wxGridCellCoords( topRow, leftCol ) );
 490     m_blockSelectionBottomRight.Add( wxGridCellCoords( bottomRow, rightCol ) );
 491
 492     // Update View:
 493     wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( topRow, leftCol ),
 494                                           wxGridCellCoords( bottomRow, rightCol ) );
 495     if ( !m_grid->GetBatchCount() )
 496         ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 497
 498     // Send Event, if not disabled.
 499     if ( sendEvent )
 500     {
 501         wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 502                                         wxEVT_GRID_RANGE_SELECT,
 503                                         m_grid,
 504                                         wxGridCellCoords( topRow, leftCol ),
 505                                         wxGridCellCoords( bottomRow, rightCol ),
 506                                         TRUE,
 507                                         ControlDown, ShiftDown,
 508                                         AltDown, MetaDown );
 509         m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 510     }
 511 }
 512
 513 void wxGridSelection::SelectCell( int row, int col,
 514                                   bool ControlDown, bool ShiftDown,
 515                                   bool AltDown, bool MetaDown,
 516                                   bool sendEvent )
 517 {
 518     if ( m_selectionMode == wxGrid::wxGridSelectRows )
 519     {
 520         SelectBlock(row, 0, row, m_grid->GetNumberCols() - 1 );
 521         return;
 522     }
 523     else if ( m_selectionMode == wxGrid::wxGridSelectColumns )
 524     {
 525         SelectBlock(0, col, m_grid->GetNumberRows() - 1, col );
 526         return;
 527     }
 528     else if ( IsInSelection ( row, col ) )
 529         return;
 530     m_cellSelection.Add( wxGridCellCoords( row, col ) );
 531
 532     // Update View:
 533     wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, col ),
 534                                           wxGridCellCoords( row, col ) );
 535     if ( !m_grid->GetBatchCount() )
 536         ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 537
 538     // Send event
 539     if (sendEvent)
 540     {
 541         wxGridEvent gridEvt( m_grid->GetId(),
 542                              wxEVT_GRID_SELECT_CELL,
 543                              m_grid,
 544                              row, col,
 545                              -1, -1,
 546                              TRUE,
 547                              ControlDown, ShiftDown,
 548                              AltDown, MetaDown);
 549         m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 550     }
 551 }
 552
 553 void wxGridSelection::ToggleCellSelection( int row, int col,
 554                                            bool ControlDown, bool ShiftDown,
 555                                            bool AltDown, bool MetaDown )
 556 {
 557     // if the cell is not selected, select it
 558     if ( !IsInSelection ( row, col ) )
 559     {
 560         SelectCell( row, col, ControlDown, ShiftDown,
 561                     AltDown, MetaDown );
 562         return;
 563     }
 564
 565     // otherwise deselect it. This can be simple or more or
 566     // less difficult, depending on how the cell is selected.
 567     size_t count, n;
 568
 569     // The simplest case: The cell is contained in m_cellSelection
 570     // Then it can't be contained in rows/cols/block (since those
 571     // would remove the cell from m_cellSelection on creation), so
 572     // we just have to remove it from m_cellSelection.
 573
 574     if ( m_selectionMode == wxGrid::wxGridSelectCells )
 575     {
 576         count = m_cellSelection.GetCount();
 577         for ( n = 0; n < count; n++ )
 578         {
 579             wxGridCellCoords& coords = m_cellSelection[n];
 580             if ( row == coords.GetRow() && col == coords.GetCol() )
 581             {
 582                 wxRect r;
 583                 r = m_grid->BlockToDeviceRect( m_cellSelection[n],
 584                                                m_cellSelection[n] );
 585                 m_cellSelection.RemoveAt(n);
 586                 n--; count--;
 587                 if ( !m_grid->GetBatchCount() )
 588                     ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 589
 590                 // Send event
 591                 wxGridEvent gridEvt( m_grid->GetId(),
 592                                      wxEVT_GRID_SELECT_CELL,
 593                                      m_grid,
 594                                      row, col, -1, -1, FALSE,
 595                                      ControlDown, ShiftDown,
 596                                      AltDown, MetaDown );
 597                 m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 598                 return;
 599             }
 600         }
 601     }
 602
 603     // The most difficult case: The cell is member of one or even several
 604     // blocks. Split each such block in up to 4 new parts, that don't
 605     // contain the cell to be selected, like this:
 606     // |---------------------------|
 607     // |                           |
 608     // |           part 1          |
 609     // |                           |
 610     // |---------------------------|
 611     // |   part 3   |x|   part 4   |
 612     // |---------------------------|
 613     // |                           |
 614     // |           part 2          |
 615     // |                           |
 616     // |---------------------------|
 617     //   (The x marks the newly deselected cell).
 618     // Note: in row selection mode, we only need part1 and part2;
 619     //       in column selection mode, we only need part 3 and part4,
 620     //          which are expanded to whole columns automatically!
 621
 622     count = m_blockSelectionTopLeft.GetCount();
 623     for ( n = 0; n < count; n++ )
 624       {
 625         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 626         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 627         int topRow = coords1.GetRow();
 628         int leftCol = coords1.GetCol();
 629         int bottomRow = coords2.GetRow();
 630         int rightCol = coords2.GetCol();
 631         if ( BlockContainsCell( topRow, leftCol, bottomRow, rightCol,
 632                                 row, col ) )
 633         {
 634             // remove the block
 635             m_blockSelectionTopLeft.RemoveAt(n);
 636             m_blockSelectionBottomRight.RemoveAt(n);
 637             n--; count--;
 638             // add up to 4 smaller blocks and set update region
 639             if ( m_selectionMode != wxGrid::wxGridSelectColumns )
 640             {
 641                 if ( topRow < row )
 642                     SelectBlock( topRow, leftCol,
 643                                  row - 1, rightCol, 0, FALSE );
 644                 if ( bottomRow > row )
 645                     SelectBlock( row + 1, leftCol,
 646                                  bottomRow, rightCol, 0, FALSE );
 647             }
 648             if ( m_selectionMode != wxGrid::wxGridSelectRows )
 649             {
 650                 if ( leftCol < col )
 651                     SelectBlock( row, leftCol, row, col - 1, 0, FALSE );
 652                 if ( rightCol > col )
 653                     SelectBlock( row, col + 1, row, rightCol, 0, FALSE );
 654             }
 655         }
 656     }
 657
 658     // remove a cell from a row, adding up to two new blocks
 659     if ( m_selectionMode != wxGrid::wxGridSelectColumns )
 660     {
 661         count = m_rowSelection.GetCount();
 662         for ( n = 0; n < count; n++ )
 663         {
 664             if ( m_rowSelection[n] == row )
 665             {
 666                 m_rowSelection.RemoveAt(n);
 667                 n--; count--;
 668                 if (m_selectionMode == wxGrid::wxGridSelectCells)
 669                 {
 670                     if ( col > 0 )
 671                         SelectBlock( row, 0, row, col - 1, 0, FALSE );
 672                     if ( col < m_grid->GetNumberCols() - 1 )
 673                         SelectBlock( row, col + 1,
 674                                      row, m_grid->GetNumberCols() - 1,
 675                                      0, FALSE );
 676                 }
 677             }
 678         }
 679     }
 680
 681     // remove a cell from a column, adding up to two new blocks
 682     if ( m_selectionMode != wxGrid::wxGridSelectRows )
 683     {
 684         count = m_colSelection.GetCount();
 685         for ( n = 0; n < count; n++ )
 686         {
 687             if ( m_colSelection[n] == col )
 688             {
 689                 m_colSelection.RemoveAt(n);
 690                 n--; count--;
 691                 if (m_selectionMode == wxGrid::wxGridSelectCells)
 692                 {
 693                     if ( row > 0 )
 694                         SelectBlock( 0, col, row - 1, col, 0, FALSE );
 695                     if ( row < m_grid->GetNumberRows() - 1 )
 696                         SelectBlock( row + 1, col,
 697                                      m_grid->GetNumberRows() - 1, col,
 698                                      0, FALSE );
 699                 }
 700             }
 701         }
 702     }
 703
 704     // Refresh the screen and send the event; according to m_selectionMode,
 705     // we need to either update only the cell, or the whole row/column.
 706     wxRect r;
 707     switch (m_selectionMode)
 708     {
 709       case wxGrid::wxGridSelectCells:
 710       {
 711           r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, col ),
 712                                          wxGridCellCoords( row, col ) );
 713           if ( !m_grid->GetBatchCount() )
 714               ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 715           wxGridEvent gridEvt( m_grid->GetId(),
 716                                wxEVT_GRID_SELECT_CELL,
 717                                m_grid,
 718                                row, col, -1, -1, FALSE,
 719                                ControlDown, ShiftDown,
 720                                AltDown, MetaDown );
 721           m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 722           break;
 723       }
 724       case wxGrid::wxGridSelectRows:
 725       {
 726           r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, 0 ),
 727                                          wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
 728           if ( !m_grid->GetBatchCount() )
 729               ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 730           wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 731                                           wxEVT_GRID_RANGE_SELECT,
 732                                           m_grid,
 733                                           wxGridCellCoords( row, 0 ),
 734                                           wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ),
 735                                           FALSE,
 736                                           ControlDown, ShiftDown,
 737                                           AltDown, MetaDown );
 738           m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 739           break;
 740       }
 741       case wxGrid::wxGridSelectColumns:
 742       {
 743           r = m_grid->BlockToDeviceRect( wxGridCellCoords( 0, col ),
 744                                          wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
 745           if ( !m_grid->GetBatchCount() )
 746               ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 747           wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 748                                           wxEVT_GRID_RANGE_SELECT,
 749                                           m_grid,
 750                                           wxGridCellCoords( 0, col ),
 751                                           wxGridCellCoords( m_grid->GetNumberRows() - 1, col ),
 752                                           FALSE,
 753                                           ControlDown, ShiftDown,
 754                                           AltDown, MetaDown );
 755           m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 756           break;
 757       }
 758     }
 759 }
 760
 761 void wxGridSelection::ClearSelection()
 762 {
 763     // Should this send deselection events?
 764     size_t n;
 765
 766     // deselect all invidiual cells and update the screen
 767     if ( m_selectionMode == wxGrid::wxGridSelectCells )
 768     {
 769
 770         while( ( n = m_cellSelection.GetCount() ) > 0)
 771         {
 772             wxRect r;
 773             n--;
 774             r = m_grid->BlockToDeviceRect( m_cellSelection[n],
 775                                            m_cellSelection[n] );
 776             m_cellSelection.RemoveAt(n);
 777             if ( !m_grid->GetBatchCount() )
 778                 ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 779         }
 780     }
 781
 782     // deselect all blocks and update the screen
 783     while( ( n = m_blockSelectionTopLeft.GetCount() ) > 0)
 784     {
 785         wxRect r;
 786         n--;
 787         r = m_grid->BlockToDeviceRect( m_blockSelectionTopLeft[n],
 788                                        m_blockSelectionBottomRight[n] );
 789         m_blockSelectionTopLeft.RemoveAt(n);
 790         m_blockSelectionBottomRight.RemoveAt(n);
 791         if ( !m_grid->GetBatchCount() )
 792             ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 793     }
 794
 795     // deselect all rows and update the screen
 796     if ( m_selectionMode != wxGrid::wxGridSelectColumns )
 797     {
 798         while( ( n = m_rowSelection.GetCount() ) > 0)
 799         {
 800             n--;
 801             int & row = m_rowSelection[n];
 802             wxRect r;
 803             r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, 0 ),
 804                                            wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
 805             m_rowSelection.RemoveAt(n);
 806             if ( !m_grid->GetBatchCount() )
 807                 ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 808         }
 809     }
 810
 811     // deselect all columns and update the screen
 812     if ( m_selectionMode != wxGrid::wxGridSelectRows )
 813     {
 814         while( ( n = m_colSelection.GetCount() ) > 0)
 815         {
 816             n--;
 817             int & col = m_colSelection[n];
 818             wxRect r;
 819             r = m_grid->BlockToDeviceRect( wxGridCellCoords( 0, col ),
 820                                            wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
 821             m_colSelection.RemoveAt(n);
 822             if ( !m_grid->GetBatchCount() )
 823                 ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 824         }
 825     }
 826 }
 827
 828
 829 void wxGridSelection::UpdateRows( size_t pos, int numRows )
 830 {
 831     size_t count = m_cellSelection.GetCount();
 832     size_t n;
 833     for ( n = 0; n < count; n++ )
 834     {
 835         wxGridCellCoords& coords = m_cellSelection[n];
 836         wxCoord row = coords.GetRow();
 837         if ((size_t)row >= pos)
 838         {
 839             if (numRows > 0)
 840             {
 841                 // If rows inserted, increase row counter where necessary
 842                 coords.SetRow(row + numRows);
 843             }
 844             else if (numRows < 0)
 845             {
 846                 // If rows deleted ...
 847                 if ((size_t)row >= pos - numRows)
 848                 {
 849                     // ...either decrement row counter (if row still exists)...
 850                     coords.SetRow(row + numRows);
 851                 }
 852                 else
 853                 {
 854                     // ...or remove the attribute
 855                     m_cellSelection.RemoveAt(n);
 856                     n--; count--;
 857                 }
 858             }
 859         }
 860     }
 861
 862     count = m_blockSelectionTopLeft.GetCount();
 863     for ( n = 0; n < count; n++ )
 864     {
 865         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 866         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 867         wxCoord row1 = coords1.GetRow();
 868         wxCoord row2 = coords2.GetRow();
 869         if ((size_t)row2 >= pos)
 870         {
 871             if (numRows > 0)
 872             {
 873                 // If rows inserted, increase row counter where necessary
 874                 coords2.SetRow(row2 + numRows);
 875                 if ( (size_t)row1 >= pos )
 876                     coords1.SetRow(row1 + numRows);
 877             }
 878             else if (numRows < 0)
 879             {
 880                 // If rows deleted ...
 881                 if ((size_t)row2 >= pos - numRows)
 882                 {
 883                     // ...either decrement row counter (if row still exists)...
 884                     coords2.SetRow(row2 + numRows);
 885                     if ( (size_t) row1 >= pos)
 886                         coords1.SetRow( wxMax(row1 + numRows, (int) pos) );
 887
 888                 }
 889                 else
 890                 {
 891                     if ( (size_t) row1 >= pos)
 892                     {
 893                         // ...or remove the attribute
 894                         m_blockSelectionTopLeft.RemoveAt(n);
 895                         m_blockSelectionBottomRight.RemoveAt(n);
 896                         n--; count--;
 897                     }
 898                     else
 899                         coords2.SetRow(pos);
 900                 }
 901             }
 902         }
 903     }
 904
 905     count = m_rowSelection.GetCount();
 906     for ( n = 0; n < count; n++ )
 907     {
 908         int & rowOrCol = m_rowSelection[n];
 909         if ( (size_t)rowOrCol >= pos )
 910         {
 911             if ( numRows > 0 )
 912             {
 913                 // If rows inserted, include row counter where necessary
 914                 rowOrCol += numRows;
 915             }
 916             else if ( numRows < 0)
 917             {
 918                 // If rows deleted, either decrement row counter (if row still exists)
 919                 if ((size_t)rowOrCol >= pos - numRows)
 920                     rowOrCol += numRows;
 921                 else
 922                 {
 923                     m_rowSelection.RemoveAt(n);
 924                     n--; count--;
 925                 }
 926             }
 927         }
 928     }
 929 }
 930
 931 void wxGridSelection::UpdateCols( size_t pos, int numCols )
 932 {
 933     size_t count = m_cellSelection.GetCount();
 934     size_t n;
 935     for ( n = 0; n < count; n++ )
 936     {
 937         wxGridCellCoords& coords = m_cellSelection[n];
 938         wxCoord col = coords.GetCol();
 939         if ((size_t)col >= pos)
 940         {
 941             if (numCols > 0)
 942             {
 943                 // If rows inserted, increase row counter where necessary
 944                 coords.SetCol(col + numCols);
 945             }
 946             else if (numCols < 0)
 947             {
 948                 // If rows deleted ...
 949                 if ((size_t)col >= pos - numCols)
 950                 {
 951                     // ...either decrement row counter (if row still exists)...
 952                     coords.SetCol(col + numCols);
 953                 }
 954                 else
 955                 {
 956                     // ...or remove the attribute
 957                     m_cellSelection.RemoveAt(n);
 958                     n--; count--;
 959                 }
 960             }
 961         }
 962     }
 963
 964     count = m_blockSelectionTopLeft.GetCount();
 965     for ( n = 0; n < count; n++ )
 966     {
 967         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 968         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 969         wxCoord col1 = coords1.GetCol();
 970         wxCoord col2 = coords2.GetCol();
 971         if ((size_t)col2 >= pos)
 972         {
 973             if (numCols > 0)
 974             {
 975                 // If rows inserted, increase row counter where necessary
 976                 coords2.SetCol(col2 + numCols);
 977                 if ( (size_t)col1 >= pos )
 978                     coords1.SetCol(col1 + numCols);
 979             }
 980             else if (numCols < 0)
 981             {
 982                 // If cols deleted ...
 983                 if ((size_t)col2 >= pos - numCols)
 984                 {
 985                     // ...either decrement col counter (if col still exists)...
 986                     coords2.SetCol(col2 + numCols);
 987                     if ( (size_t) col1 >= pos)
 988                         coords1.SetCol( wxMax(col1 + numCols, (int) pos) );
 989
 990                 }
 991                 else
 992                 {
 993                     if ( (size_t) col1 >= pos)
 994                     {
 995                         // ...or remove the attribute
 996                         m_blockSelectionTopLeft.RemoveAt(n);
 997                         m_blockSelectionBottomRight.RemoveAt(n);
 998                         n--; count--;
 999                     }
1000                     else
1001                         coords2.SetCol(pos);
1002                 }
1003             }
1004         }
1005     }
1006
1007     count = m_colSelection.GetCount();
1008     for ( n = 0; n < count; n++ )
1009     {
1010         int & rowOrCol = m_colSelection[n];
1011         if ( (size_t)rowOrCol >= pos )
1012         {
1013             if ( numCols > 0 )
1014             {
1015                 // If cols inserted, include col counter where necessary
1016                 rowOrCol += numCols;
1017             }
1018             else if ( numCols < 0)
1019             {
1020                 // If cols deleted, either decrement col counter (if col still exists)
1021                 if ((size_t)rowOrCol >= pos - numCols)
1022                     rowOrCol += numCols;
1023                 else
1024                 {
1025                     m_colSelection.RemoveAt(n);
1026                     n--; count--;
1027                 }
1028             }
1029         }
1030     }
1031 }
1032
1033 int wxGridSelection::BlockContain( int topRow1, int leftCol1,
1034                                    int bottomRow1, int rightCol1,
1035                                    int topRow2, int leftCol2,
1036                                    int bottomRow2, int rightCol2 )
1037 // returns 1, if Block1 contains Block2,
1038 //        -1, if Block2 contains Block1,
1039 //         0, otherwise
1040 {
1041     if ( topRow1 <= topRow2 && bottomRow2 <= bottomRow1 &&
1042          leftCol1 <= leftCol2 && rightCol2 <= rightCol1 )
1043         return 1;
1044     else if ( topRow2 <= topRow1 && bottomRow1 <= bottomRow2 &&
1045               leftCol2 <= leftCol1 && rightCol1 <= rightCol2 )
1046         return -1;
1047     return 0;
1048 }
1049
1050 #endif