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     if ( !m_grid->GetBatchCount() )
 263     {
 264         wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, 0 ),
 265                                               wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
 266         ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 267     }
 268
 269     // Send Event
 270     wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 271                                     wxEVT_GRID_RANGE_SELECT,
 272                                     m_grid,
 273                                     wxGridCellCoords( row, 0 ),
 274                                     wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ),
 275                                     TRUE,
 276                                     ControlDown,  ShiftDown,
 277                                     AltDown, MetaDown );
 278
 279     m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 280 }
 281
 282 void wxGridSelection::SelectCol( int col,
 283                                  bool ControlDown,  bool ShiftDown,
 284                                  bool AltDown, bool MetaDown )
 285 {
 286     if ( m_selectionMode == wxGrid::wxGridSelectRows )
 287         return;
 288     size_t count, n;
 289
 290     // Remove single cells contained in newly selected block.
 291     if ( m_selectionMode == wxGrid::wxGridSelectCells )
 292     {
 293         count = m_cellSelection.GetCount();
 294         for ( n = 0; n < count; n++ )
 295         {
 296             wxGridCellCoords& coords = m_cellSelection[n];
 297             if ( BlockContainsCell( 0, col, m_grid->GetNumberRows() - 1, col,
 298                                     coords.GetRow(), coords.GetCol() ) )
 299             {
 300                 m_cellSelection.RemoveAt(n);
 301                 n--; count--;
 302             }
 303         }
 304     }
 305
 306     // Simplify list of selected blocks (if possible)
 307     count = m_blockSelectionTopLeft.GetCount();
 308     bool done = FALSE;
 309     for ( n = 0; n < count; n++ )
 310     {
 311         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 312         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 313
 314         // Remove block if it is a subset of the column
 315         if ( coords1.GetCol() == col && col == coords2.GetCol() )
 316         {
 317             m_blockSelectionTopLeft.RemoveAt(n);
 318             m_blockSelectionBottomRight.RemoveAt(n);
 319             n--; count--;
 320         }
 321         else if ( coords1.GetRow() == 0  &&
 322                   coords2.GetRow() == m_grid->GetNumberRows() - 1 )
 323         {
 324             // silently return, if row is contained in block
 325             if ( coords1.GetCol() <= col && col <= coords2.GetCol() )
 326                 return;
 327             // expand block, if it touched col
 328             else if ( coords1.GetCol() == col + 1)
 329             {
 330                 coords1.SetCol(col);
 331                 done = TRUE;
 332             }
 333             else if ( coords2.GetCol() == col - 1)
 334             {
 335                 coords2.SetCol(col);
 336                 done = TRUE;
 337             }
 338         }
 339     }
 340
 341     // Unless we successfully handled the column,
 342     // Check whether col is already selected.
 343     if ( !done )
 344     {
 345         count = m_colSelection.GetCount();
 346         for ( n = 0; n < count; n++ )
 347         {
 348             if ( col == m_colSelection[n] )
 349                 return;
 350         }
 351
 352         // Add col to selection
 353         m_colSelection.Add(col);
 354     }
 355
 356     // Update View:
 357     if ( !m_grid->GetBatchCount() )
 358     {
 359         wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( 0, col ),
 360                                               wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
 361         ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 362     }
 363
 364     // Send Event
 365     wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 366                                     wxEVT_GRID_RANGE_SELECT,
 367                                     m_grid,
 368                                     wxGridCellCoords( 0, col ),
 369                                     wxGridCellCoords( m_grid->GetNumberRows() - 1, col ),
 370                                     TRUE,
 371                                     ControlDown,  ShiftDown,
 372                                     AltDown, MetaDown );
 373
 374     m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 375 }
 376
 377 void wxGridSelection::SelectBlock( int topRow, int leftCol,
 378                                    int bottomRow, int rightCol,
 379                                    bool ControlDown, bool ShiftDown,
 380                                    bool AltDown, bool MetaDown,
 381                                    bool sendEvent )
 382 {
 383     // Fix the coordinates of the block if needed.
 384     if ( m_selectionMode == wxGrid::wxGridSelectRows )
 385     {
 386         leftCol = 0;
 387         rightCol = m_grid->GetNumberCols() - 1;
 388     }
 389     else if ( m_selectionMode == wxGrid::wxGridSelectColumns )
 390     {
 391         topRow = 0;
 392         bottomRow = m_grid->GetNumberRows() - 1;
 393     }
 394     if ( topRow > bottomRow )
 395     {
 396         int temp = topRow;
 397         topRow = bottomRow;
 398         bottomRow = temp;
 399     }
 400
 401     if ( leftCol > rightCol )
 402     {
 403         int temp = leftCol;
 404         leftCol = rightCol;
 405         rightCol = temp;
 406     }
 407
 408     // Handle single cell selection in SelectCell.
 409     // (MB: added check for selection mode here to prevent
 410     //  crashes if, for example, we are select rows and the
 411     //  grid only has 1 col)
 412     if ( m_selectionMode == wxGrid::wxGridSelectCells &&
 413          topRow == bottomRow && leftCol == rightCol )
 414         SelectCell( topRow, leftCol, ControlDown,  ShiftDown,
 415                     AltDown, MetaDown, sendEvent );
 416
 417     size_t count, n;
 418     // Remove single cells contained in newly selected block.
 419     if ( m_selectionMode == wxGrid::wxGridSelectCells )
 420     {
 421         count = m_cellSelection.GetCount();
 422         for ( n = 0; n < count; n++ )
 423         {
 424             wxGridCellCoords& coords = m_cellSelection[n];
 425             if ( BlockContainsCell( topRow, leftCol, bottomRow, rightCol,
 426                                     coords.GetRow(), coords.GetCol() ) )
 427             {
 428                 m_cellSelection.RemoveAt(n);
 429                 n--; count--;
 430             }
 431         }
 432     }
 433
 434     // If a block containing the selection is already selected, return,
 435     // if a block contained in the selection is found, remove it.
 436
 437     count = m_blockSelectionTopLeft.GetCount();
 438     for ( n = 0; n < count; n++ )
 439     {
 440         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 441         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 442         switch ( BlockContain( coords1.GetRow(), coords1.GetCol(),
 443                                coords2.GetRow(), coords2.GetCol(),
 444                                topRow, leftCol, bottomRow, rightCol ) )
 445         {
 446           case 1:
 447             return;
 448           case -1:
 449             m_blockSelectionTopLeft.RemoveAt(n);
 450             m_blockSelectionBottomRight.RemoveAt(n);
 451             n--; count--;
 452           default:
 453             ;
 454         }
 455     }
 456
 457     // If a row containing the selection is already selected, return,
 458     // if a row contained in newly selected block is found, remove it.
 459     if ( m_selectionMode != wxGrid::wxGridSelectColumns )
 460     {
 461         count = m_rowSelection.GetCount();
 462         for ( n = 0; n < count; n++ )
 463         {
 464             switch ( BlockContain( m_rowSelection[n], 0,
 465                                    m_rowSelection[n], m_grid->GetNumberCols()-1,
 466                                    topRow, leftCol, bottomRow, rightCol ) )
 467             {
 468               case 1:
 469                 return;
 470               case -1:
 471                 m_rowSelection.RemoveAt(n);
 472                 n--; count--;
 473               default:
 474                 ;
 475             }
 476         }
 477     }
 478     if ( m_selectionMode != wxGrid::wxGridSelectRows )
 479     {
 480         count = m_colSelection.GetCount();
 481         for ( n = 0; n < count; n++ )
 482         {
 483             switch ( BlockContain( 0, m_colSelection[n],
 484                                    m_grid->GetNumberRows()-1, m_colSelection[n],
 485                                    topRow, leftCol, bottomRow, rightCol ) )
 486             {
 487               case 1:
 488                 return;
 489               case -1:
 490                 m_colSelection.RemoveAt(n);
 491                 n--; count--;
 492               default:
 493                 ;
 494             }
 495         }
 496     }
 497     m_blockSelectionTopLeft.Add( wxGridCellCoords( topRow, leftCol ) );
 498     m_blockSelectionBottomRight.Add( wxGridCellCoords( bottomRow, rightCol ) );
 499
 500     // Update View:
 501     if ( !m_grid->GetBatchCount() )
 502     {
 503         wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( topRow, leftCol ),
 504                                               wxGridCellCoords( bottomRow, rightCol ) );
 505         ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 506     }
 507
 508     // Send Event, if not disabled.
 509     if ( sendEvent )
 510     {
 511         wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 512                                         wxEVT_GRID_RANGE_SELECT,
 513                                         m_grid,
 514                                         wxGridCellCoords( topRow, leftCol ),
 515                                         wxGridCellCoords( bottomRow, rightCol ),
 516                                         TRUE,
 517                                         ControlDown, ShiftDown,
 518                                         AltDown, MetaDown );
 519         m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 520     }
 521 }
 522
 523 void wxGridSelection::SelectCell( int row, int col,
 524                                   bool ControlDown, bool ShiftDown,
 525                                   bool AltDown, bool MetaDown,
 526                                   bool sendEvent )
 527 {
 528     if ( m_selectionMode == wxGrid::wxGridSelectRows )
 529     {
 530         SelectBlock(row, 0, row, m_grid->GetNumberCols() - 1,
 531                     ControlDown, ShiftDown, AltDown, MetaDown, sendEvent);
 532         return;
 533     }
 534     else if ( m_selectionMode == wxGrid::wxGridSelectColumns )
 535     {
 536         SelectBlock(0, col, m_grid->GetNumberRows() - 1, col,
 537                     ControlDown, ShiftDown, AltDown, MetaDown, sendEvent);
 538         return;
 539     }
 540     else if ( IsInSelection ( row, col ) )
 541         return;
 542     m_cellSelection.Add( wxGridCellCoords( row, col ) );
 543
 544     // Update View:
 545     if ( !m_grid->GetBatchCount() )
 546     {
 547         wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, col ),
 548                                               wxGridCellCoords( row, col ) );
 549         ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 550     }
 551
 552     // Send event
 553     if (sendEvent)
 554     {
 555         wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 556                                         wxEVT_GRID_RANGE_SELECT,
 557                                         m_grid,
 558                                         wxGridCellCoords( row, col ),
 559                                         wxGridCellCoords( row, col ),
 560                                         TRUE,
 561                                         ControlDown, ShiftDown,
 562                                         AltDown, MetaDown);
 563         m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 564     }
 565 }
 566
 567 void wxGridSelection::ToggleCellSelection( int row, int col,
 568                                            bool ControlDown, bool ShiftDown,
 569                                            bool AltDown, bool MetaDown )
 570 {
 571     // if the cell is not selected, select it
 572     if ( !IsInSelection ( row, col ) )
 573     {
 574         SelectCell( row, col, ControlDown, ShiftDown,
 575                     AltDown, MetaDown );
 576         return;
 577     }
 578
 579     // otherwise deselect it. This can be simple or more or
 580     // less difficult, depending on how the cell is selected.
 581     size_t count, n;
 582
 583     // The simplest case: The cell is contained in m_cellSelection
 584     // Then it can't be contained in rows/cols/block (since those
 585     // would remove the cell from m_cellSelection on creation), so
 586     // we just have to remove it from m_cellSelection.
 587
 588     if ( m_selectionMode == wxGrid::wxGridSelectCells )
 589     {
 590         count = m_cellSelection.GetCount();
 591         for ( n = 0; n < count; n++ )
 592         {
 593             wxGridCellCoords& coords = m_cellSelection[n];
 594             if ( row == coords.GetRow() && col == coords.GetCol() )
 595             {
 596                 wxGridCellCoords coords = m_cellSelection[n];
 597                 m_cellSelection.RemoveAt(n);
 598                 if ( !m_grid->GetBatchCount() )
 599                 {
 600                     wxRect r = m_grid->BlockToDeviceRect( coords, coords );
 601                     ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 602                 }
 603
 604                 // Send event
 605                 wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 606                                                 wxEVT_GRID_RANGE_SELECT,
 607                                                 m_grid,
 608                                                 wxGridCellCoords( row, col ),
 609                                                 wxGridCellCoords( row, col ),
 610                                                 FALSE,
 611                                                 ControlDown, ShiftDown,
 612                                                 AltDown, MetaDown );
 613                 m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 614                 return;
 615             }
 616         }
 617     }
 618
 619     // The most difficult case: The cell is member of one or even several
 620     // blocks. Split each such block in up to 4 new parts, that don't
 621     // contain the cell to be selected, like this:
 622     // |---------------------------|
 623     // |                           |
 624     // |           part 1          |
 625     // |                           |
 626     // |---------------------------|
 627     // |   part 3   |x|   part 4   |
 628     // |---------------------------|
 629     // |                           |
 630     // |           part 2          |
 631     // |                           |
 632     // |---------------------------|
 633     //   (The x marks the newly deselected cell).
 634     // Note: in row selection mode, we only need part1 and part2;
 635     //       in column selection mode, we only need part 3 and part4,
 636     //          which are expanded to whole columns automatically!
 637
 638     count = m_blockSelectionTopLeft.GetCount();
 639     for ( n = 0; n < count; n++ )
 640       {
 641         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 642         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 643         int topRow = coords1.GetRow();
 644         int leftCol = coords1.GetCol();
 645         int bottomRow = coords2.GetRow();
 646         int rightCol = coords2.GetCol();
 647         if ( BlockContainsCell( topRow, leftCol, bottomRow, rightCol,
 648                                 row, col ) )
 649         {
 650             // remove the block
 651             m_blockSelectionTopLeft.RemoveAt(n);
 652             m_blockSelectionBottomRight.RemoveAt(n);
 653             n--; count--;
 654             // add up to 4 smaller blocks and set update region
 655             if ( m_selectionMode != wxGrid::wxGridSelectColumns )
 656             {
 657                 if ( topRow < row )
 658                     SelectBlock( topRow, leftCol, row - 1, rightCol,
 659                                  FALSE, FALSE, FALSE, FALSE, FALSE );
 660                 if ( bottomRow > row )
 661                     SelectBlock( row + 1, leftCol, bottomRow, rightCol,
 662                                  FALSE, FALSE, FALSE, FALSE, FALSE );
 663             }
 664             if ( m_selectionMode != wxGrid::wxGridSelectRows )
 665             {
 666                 if ( leftCol < col )
 667                     SelectBlock( row, leftCol, row, col - 1,
 668                                  FALSE, FALSE, FALSE, FALSE, FALSE );
 669                 if ( rightCol > col )
 670                     SelectBlock( row, col + 1, row, rightCol,
 671                                  FALSE, FALSE, FALSE, FALSE, FALSE );
 672             }
 673         }
 674     }
 675
 676     // remove a cell from a row, adding up to two new blocks
 677     if ( m_selectionMode != wxGrid::wxGridSelectColumns )
 678     {
 679         count = m_rowSelection.GetCount();
 680         for ( n = 0; n < count; n++ )
 681         {
 682             if ( m_rowSelection[n] == row )
 683             {
 684                 m_rowSelection.RemoveAt(n);
 685                 n--; count--;
 686                 if (m_selectionMode == wxGrid::wxGridSelectCells)
 687                 {
 688                     if ( col > 0 )
 689                         SelectBlock( row, 0, row, col - 1,
 690                                      FALSE, FALSE, FALSE, FALSE, FALSE );
 691                     if ( col < m_grid->GetNumberCols() - 1 )
 692                         SelectBlock( row, col + 1,
 693                                      row, m_grid->GetNumberCols() - 1,
 694                                      FALSE, FALSE, FALSE, FALSE, FALSE );
 695                 }
 696             }
 697         }
 698     }
 699
 700     // remove a cell from a column, adding up to two new blocks
 701     if ( m_selectionMode != wxGrid::wxGridSelectRows )
 702     {
 703         count = m_colSelection.GetCount();
 704         for ( n = 0; n < count; n++ )
 705         {
 706             if ( m_colSelection[n] == col )
 707             {
 708                 m_colSelection.RemoveAt(n);
 709                 n--; count--;
 710                 if (m_selectionMode == wxGrid::wxGridSelectCells)
 711                 {
 712                     if ( row > 0 )
 713                         SelectBlock( 0, col, row - 1, col,
 714                                      FALSE, FALSE, FALSE, FALSE, FALSE );
 715                     if ( row < m_grid->GetNumberRows() - 1 )
 716                         SelectBlock( row + 1, col,
 717                                      m_grid->GetNumberRows() - 1, col,
 718                                      FALSE, FALSE, FALSE, FALSE, FALSE );
 719                 }
 720             }
 721         }
 722     }
 723
 724     // Refresh the screen and send the event; according to m_selectionMode,
 725     // we need to either update only the cell, or the whole row/column.
 726     wxRect r;
 727     switch (m_selectionMode)
 728     {
 729       case wxGrid::wxGridSelectCells:
 730       {
 731           if ( !m_grid->GetBatchCount() )
 732           {
 733               r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, col ),
 734                                              wxGridCellCoords( row, col ) );
 735               ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 736           }
 737
 738           wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 739                                           wxEVT_GRID_RANGE_SELECT,
 740                                           m_grid,
 741                                           wxGridCellCoords( row, col ),
 742                                           wxGridCellCoords( row, col ),
 743                                           FALSE,
 744                                           ControlDown, ShiftDown,
 745                                           AltDown, MetaDown );
 746           m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 747           break;
 748       }
 749       case wxGrid::wxGridSelectRows:
 750       {
 751           if ( !m_grid->GetBatchCount() )
 752           {
 753               r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, 0 ),
 754                                              wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
 755               ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 756           }
 757
 758           wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 759                                           wxEVT_GRID_RANGE_SELECT,
 760                                           m_grid,
 761                                           wxGridCellCoords( row, 0 ),
 762                                           wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ),
 763                                           FALSE,
 764                                           ControlDown, ShiftDown,
 765                                           AltDown, MetaDown );
 766           m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 767           break;
 768       }
 769       case wxGrid::wxGridSelectColumns:
 770       {
 771           if ( !m_grid->GetBatchCount() )
 772           {
 773               r = m_grid->BlockToDeviceRect( wxGridCellCoords( 0, col ),
 774                                              wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
 775               ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 776           }
 777
 778           wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 779                                           wxEVT_GRID_RANGE_SELECT,
 780                                           m_grid,
 781                                           wxGridCellCoords( 0, col ),
 782                                           wxGridCellCoords( m_grid->GetNumberRows() - 1, col ),
 783                                           FALSE,
 784                                           ControlDown, ShiftDown,
 785                                           AltDown, MetaDown );
 786           m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 787           break;
 788       }
 789     }
 790 }
 791
 792 void wxGridSelection::ClearSelection()
 793 {
 794     size_t n;
 795     wxRect r;
 796     wxGridCellCoords coords1, coords2;
 797
 798     // deselect all invidiual cells and update the screen
 799     if ( m_selectionMode == wxGrid::wxGridSelectCells )
 800     {
 801         while( ( n = m_cellSelection.GetCount() ) > 0)
 802         {
 803             n--;
 804             coords1 = m_cellSelection[n];
 805             m_cellSelection.RemoveAt(n);
 806             if ( !m_grid->GetBatchCount() )
 807             {
 808                 r = m_grid->BlockToDeviceRect( coords1, coords1 );
 809                 ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 810             }
 811         }
 812     }
 813
 814     // deselect all blocks and update the screen
 815     while( ( n = m_blockSelectionTopLeft.GetCount() ) > 0)
 816     {
 817         n--;
 818         coords1 = m_blockSelectionTopLeft[n];
 819         coords2 = m_blockSelectionBottomRight[n];
 820         m_blockSelectionTopLeft.RemoveAt(n);
 821         m_blockSelectionBottomRight.RemoveAt(n);
 822         if ( !m_grid->GetBatchCount() )
 823         {
 824             r = m_grid->BlockToDeviceRect( coords1, coords2 );
 825             ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 826         }
 827     }
 828
 829     // deselect all rows and update the screen
 830     if ( m_selectionMode != wxGrid::wxGridSelectColumns )
 831     {
 832         while( ( n = m_rowSelection.GetCount() ) > 0)
 833         {
 834             n--;
 835             int row = m_rowSelection[n];
 836             m_rowSelection.RemoveAt(n);
 837             if ( !m_grid->GetBatchCount() )
 838             {
 839                 r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, 0 ),
 840                                                wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
 841                 ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 842             }
 843         }
 844     }
 845
 846     // deselect all columns and update the screen
 847     if ( m_selectionMode != wxGrid::wxGridSelectRows )
 848     {
 849         while( ( n = m_colSelection.GetCount() ) > 0)
 850         {
 851             n--;
 852             int col = m_colSelection[n];
 853             m_colSelection.RemoveAt(n);
 854             if ( !m_grid->GetBatchCount() )
 855             {
 856                 r = m_grid->BlockToDeviceRect( wxGridCellCoords( 0, col ),
 857                                                wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
 858                 ((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
 859             }
 860         }
 861     }
 862
 863     // One deselection event, indicating deselection of _all_ cells.
 864     // (No finer grained events for each of the smaller regions
 865     //  deselected above!)
 866     wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
 867                                     wxEVT_GRID_RANGE_SELECT,
 868                                     m_grid,
 869                                     wxGridCellCoords( 0, 0 ),
 870                                     wxGridCellCoords( m_grid->GetNumberRows() - 1,
 871                                                       m_grid->GetNumberCols() - 1 ),
 872                                     FALSE );
 873
 874     m_grid->GetEventHandler()->ProcessEvent(gridEvt);
 875 }
 876
 877
 878 void wxGridSelection::UpdateRows( size_t pos, int numRows )
 879 {
 880     size_t count = m_cellSelection.GetCount();
 881     size_t n;
 882     for ( n = 0; n < count; n++ )
 883     {
 884         wxGridCellCoords& coords = m_cellSelection[n];
 885         wxCoord row = coords.GetRow();
 886         if ((size_t)row >= pos)
 887         {
 888             if (numRows > 0)
 889             {
 890                 // If rows inserted, increase row counter where necessary
 891                 coords.SetRow(row + numRows);
 892             }
 893             else if (numRows < 0)
 894             {
 895                 // If rows deleted ...
 896                 if ((size_t)row >= pos - numRows)
 897                 {
 898                     // ...either decrement row counter (if row still exists)...
 899                     coords.SetRow(row + numRows);
 900                 }
 901                 else
 902                 {
 903                     // ...or remove the attribute
 904                     m_cellSelection.RemoveAt(n);
 905                     n--; count--;
 906                 }
 907             }
 908         }
 909     }
 910
 911     count = m_blockSelectionTopLeft.GetCount();
 912     for ( n = 0; n < count; n++ )
 913     {
 914         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
 915         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
 916         wxCoord row1 = coords1.GetRow();
 917         wxCoord row2 = coords2.GetRow();
 918         if ((size_t)row2 >= pos)
 919         {
 920             if (numRows > 0)
 921             {
 922                 // If rows inserted, increase row counter where necessary
 923                 coords2.SetRow(row2 + numRows);
 924                 if ( (size_t)row1 >= pos )
 925                     coords1.SetRow(row1 + numRows);
 926             }
 927             else if (numRows < 0)
 928             {
 929                 // If rows deleted ...
 930                 if ((size_t)row2 >= pos - numRows)
 931                 {
 932                     // ...either decrement row counter (if row still exists)...
 933                     coords2.SetRow(row2 + numRows);
 934                     if ( (size_t) row1 >= pos)
 935                         coords1.SetRow( wxMax(row1 + numRows, (int) pos) );
 936
 937                 }
 938                 else
 939                 {
 940                     if ( (size_t) row1 >= pos)
 941                     {
 942                         // ...or remove the attribute
 943                         m_blockSelectionTopLeft.RemoveAt(n);
 944                         m_blockSelectionBottomRight.RemoveAt(n);
 945                         n--; count--;
 946                     }
 947                     else
 948                         coords2.SetRow(pos);
 949                 }
 950             }
 951         }
 952     }
 953
 954     count = m_rowSelection.GetCount();
 955     for ( n = 0; n < count; n++ )
 956     {
 957     int  rowOrCol_ = m_rowSelection [ n ];
 958
 959       if ( ( size_t ) rowOrCol_ >= pos )
 960       {
 961           if ( numRows > 0 )
 962           {
 963               m_rowSelection [ n ] += numRows;
 964           }
 965           else if ( numRows < 0 )
 966           {
 967               if ( ( size_t ) rowOrCol_ >= ( pos - numRows ) )
 968                   m_rowSelection [ n ] += numRows;
 969               else
 970               {
 971                   m_rowSelection.RemoveAt ( n );
 972                   n--;
 973                   count--;
 974               }
 975           }
 976       }
 977     }
 978     // No need to touch selected columns, unless we removed _all_
 979     // rows, in this case, we remove all columns from the selection.
 980
 981     if ( !m_grid->GetNumberRows() )
 982         m_colSelection.Clear();
 983 }
 984
 985
 986 void wxGridSelection::UpdateCols( size_t pos, int numCols )
 987 {
 988     size_t count = m_cellSelection.GetCount();
 989     size_t n;
 990     for ( n = 0; n < count; n++ )
 991     {
 992         wxGridCellCoords& coords = m_cellSelection[n];
 993         wxCoord col = coords.GetCol();
 994         if ((size_t)col >= pos)
 995         {
 996             if (numCols > 0)
 997             {
 998                 // If rows inserted, increase row counter where necessary
 999                 coords.SetCol(col + numCols);
1000             }
1001             else if (numCols < 0)
1002             {
1003                 // If rows deleted ...
1004                 if ((size_t)col >= pos - numCols)
1005                 {
1006                     // ...either decrement row counter (if row still exists)...
1007                     coords.SetCol(col + numCols);
1008                 }
1009                 else
1010                 {
1011                     // ...or remove the attribute
1012                     m_cellSelection.RemoveAt(n);
1013                     n--; count--;
1014                 }
1015             }
1016         }
1017     }
1018
1019     count = m_blockSelectionTopLeft.GetCount();
1020     for ( n = 0; n < count; n++ )
1021     {
1022         wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
1023         wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
1024         wxCoord col1 = coords1.GetCol();
1025         wxCoord col2 = coords2.GetCol();
1026         if ((size_t)col2 >= pos)
1027         {
1028             if (numCols > 0)
1029             {
1030                 // If rows inserted, increase row counter where necessary
1031                 coords2.SetCol(col2 + numCols);
1032                 if ( (size_t)col1 >= pos )
1033                     coords1.SetCol(col1 + numCols);
1034             }
1035             else if (numCols < 0)
1036             {
1037                 // If cols deleted ...
1038                 if ((size_t)col2 >= pos - numCols)
1039                 {
1040                     // ...either decrement col counter (if col still exists)...
1041                     coords2.SetCol(col2 + numCols);
1042                     if ( (size_t) col1 >= pos)
1043                         coords1.SetCol( wxMax(col1 + numCols, (int) pos) );
1044
1045                 }
1046                 else
1047                 {
1048                     if ( (size_t) col1 >= pos)
1049                     {
1050                         // ...or remove the attribute
1051                         m_blockSelectionTopLeft.RemoveAt(n);
1052                         m_blockSelectionBottomRight.RemoveAt(n);
1053                         n--; count--;
1054                     }
1055                     else
1056                         coords2.SetCol(pos);
1057                 }
1058             }
1059         }
1060     }
1061
1062     count = m_colSelection.GetCount();
1063     for ( n = 0; n < count; n++ )
1064     {
1065
1066       int   rowOrCol = m_colSelection [ n ];
1067         if ( ( size_t ) rowOrCol >= pos )
1068         {
1069             if ( numCols > 0 )
1070                 m_colSelection [ n ] += numCols;
1071             else if ( numCols < 0 )
1072             {
1073                 if ( ( size_t ) rowOrCol >= ( pos -numCols ) )
1074                     m_colSelection [ n ] += numCols;
1075                 else
1076                 {
1077                     m_colSelection.RemoveAt ( n );
1078                     n--;
1079                     count--;
1080                 }
1081             }
1082         }
1083
1084     }
1085
1086     // No need to touch selected rows, unless we removed _all_
1087     // columns, in this case, we remove all rows from the selection.
1088     if ( !m_grid->GetNumberCols() )
1089         m_rowSelection.Clear();
1090 }
1091
1092
1093 int wxGridSelection::BlockContain( int topRow1, int leftCol1,
1094                                    int bottomRow1, int rightCol1,
1095                                    int topRow2, int leftCol2,
1096                                    int bottomRow2, int rightCol2 )
1097 // returns 1, if Block1 contains Block2,
1098 //        -1, if Block2 contains Block1,
1099 //         0, otherwise
1100 {
1101     if ( topRow1 <= topRow2 && bottomRow2 <= bottomRow1 &&
1102          leftCol1 <= leftCol2 && rightCol2 <= rightCol1 )
1103         return 1;
1104     else if ( topRow2 <= topRow1 && bottomRow1 <= bottomRow2 &&
1105               leftCol2 <= leftCol1 && rightCol1 <= rightCol2 )
1106         return -1;
1107     return 0;
1108 }
1109
1110 #endif