bool wxGridSelection::IsInSelection( int row, int col )
{
size_t count;
// First check whether the given cell is individually selected
// (if m_selectionMode is wxGridSelectCells).
if ( m_selectionMode == wxGrid::wxGridSelectCells )
{
count = m_cellSelection.GetCount();
for ( size_t n = 0; n < count; n++ )
{
wxGridCellCoords& coords = m_cellSelection[n];
if ( row == coords.GetRow() && col == coords.GetCol() )
return true;
}
}
// Now check whether the given cell is
// contained in one of the selected blocks.
count = m_blockSelectionTopLeft.GetCount();
for ( size_t n = 0; n < count; n++ )
{
wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
if ( BlockContainsCell(coords1.GetRow(), coords1.GetCol(),
coords2.GetRow(), coords2.GetCol(),
row, col ) )
return true;
}
// Now check whether the given cell is
// contained in one of the selected rows
// (unless we are in column selection mode).
if ( m_selectionMode != wxGrid::wxGridSelectColumns )
{
count = m_rowSelection.GetCount();
for ( size_t n = 0; n < count; n++ )
{
if ( row == m_rowSelection[n] )
return true;
}
}
// Now check whether the given cell is
// contained in one of the selected columns
// (unless we are in row selection mode).
if ( m_selectionMode != wxGrid::wxGridSelectRows )
{
count = m_colSelection.GetCount();
for ( size_t n = 0; n < count; n++ )
{
if ( col == m_colSelection[n] )
return true;
}
}
return false;
}
void
wxGridSelection::ToggleCellSelection(int row, int col,
const wxKeyboardState& kbd)
{
// if the cell is not selected, select it
if ( !IsInSelection ( row, col ) )
{
SelectCell(row, col, kbd);
return;
}
// otherwise deselect it. This can be simple or more or
// less difficult, depending on how the cell is selected.
size_t count, n;
// The simplest case: The cell is contained in m_cellSelection
// Then it can't be contained in rows/cols/block (since those
// would remove the cell from m_cellSelection on creation), so
// we just have to remove it from m_cellSelection.
if ( m_selectionMode == wxGrid::wxGridSelectCells )
{
count = m_cellSelection.GetCount();
for ( n = 0; n < count; n++ )
{
const wxGridCellCoords& sel = m_cellSelection[n];
if ( row == sel.GetRow() && col == sel.GetCol() )
{
wxGridCellCoords coords = m_cellSelection[n];
m_cellSelection.RemoveAt(n);
if ( !m_grid->GetBatchCount() )
{
wxRect r = m_grid->BlockToDeviceRect( coords, coords );
((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
}
// Send event
wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
wxEVT_GRID_RANGE_SELECT,
m_grid,
wxGridCellCoords( row, col ),
wxGridCellCoords( row, col ),
false,
kbd );
m_grid->GetEventHandler()->ProcessEvent( gridEvt );
return;
}
}
}
// The most difficult case: The cell is member of one or even several
// blocks. Split each such block in up to 4 new parts, that don't
// contain the cell to be selected, like this:
// |---------------------------|
// | |
// | part 1 |
// | |
// |---------------------------|
// | part 3 |x| part 4 |
// |---------------------------|
// | |
// | part 2 |
// | |
// |---------------------------|
// (The x marks the newly deselected cell).
// Note: in row selection mode, we only need part1 and part2;
// in column selection mode, we only need part 3 and part4,
// which are expanded to whole columns automatically!
count = m_blockSelectionTopLeft.GetCount();
for ( n = 0; n < count; n++ )
{
wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
int topRow = coords1.GetRow();
int leftCol = coords1.GetCol();
int bottomRow = coords2.GetRow();
int rightCol = coords2.GetCol();
if ( BlockContainsCell( topRow, leftCol, bottomRow, rightCol, row, col ) )
{
// remove the block
m_blockSelectionTopLeft.RemoveAt(n);
m_blockSelectionBottomRight.RemoveAt(n);
n--;
count--;
// add up to 4 smaller blocks and set update region
if ( m_selectionMode != wxGrid::wxGridSelectColumns )
{
if ( topRow < row )
SelectBlockNoEvent(topRow, leftCol, row - 1, rightCol);
if ( bottomRow > row )
SelectBlockNoEvent(row + 1, leftCol, bottomRow, rightCol);
}
if ( m_selectionMode != wxGrid::wxGridSelectRows )
{
if ( leftCol < col )
SelectBlockNoEvent(row, leftCol, row, col - 1);
if ( rightCol > col )
SelectBlockNoEvent(row, col + 1, row, rightCol);
}
}
}
bool rowSelectionWasChanged = false;
// remove a cell from a row, adding up to two new blocks
if ( m_selectionMode != wxGrid::wxGridSelectColumns )
{
count = m_rowSelection.GetCount();
for ( n = 0; n < count; n++ )
{
if ( m_rowSelection[n] == row )
{
m_rowSelection.RemoveAt(n);
n--;
count--;
rowSelectionWasChanged = true;
if (m_selectionMode == wxGrid::wxGridSelectCells)
{
if ( col > 0 )
SelectBlockNoEvent(row, 0, row, col - 1);
if ( col < m_grid->GetNumberCols() - 1 )
SelectBlockNoEvent( row, col + 1,
row, m_grid->GetNumberCols() - 1);
}
}
}
}
bool colSelectionWasChanged = false;
// remove a cell from a column, adding up to two new blocks
if ( m_selectionMode != wxGrid::wxGridSelectRows )
{
count = m_colSelection.GetCount();
for ( n = 0; n < count; n++ )
{
if ( m_colSelection[n] == col )
{
m_colSelection.RemoveAt(n);
n--;
count--;
colSelectionWasChanged = true;
if (m_selectionMode == wxGrid::wxGridSelectCells)
{
if ( row > 0 )
SelectBlockNoEvent(0, col, row - 1, col);
if ( row < m_grid->GetNumberRows() - 1 )
SelectBlockNoEvent(row + 1, col,
m_grid->GetNumberRows() - 1, col);
}
}
}
}
// Refresh the screen and send the event; according to m_selectionMode,
// we need to either update only the cell, or the whole row/column.
wxRect r;
if ( m_selectionMode == wxGrid::wxGridSelectCells )
{
if ( !m_grid->GetBatchCount() )
{
r = m_grid->BlockToDeviceRect(
wxGridCellCoords( row, col ),
wxGridCellCoords( row, col ) );
((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
}
wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
wxEVT_GRID_RANGE_SELECT,
m_grid,
wxGridCellCoords( row, col ),
wxGridCellCoords( row, col ),
false,
kbd );
m_grid->GetEventHandler()->ProcessEvent( gridEvt );
}
else // rows/columns selection mode
{
if ( m_selectionMode != wxGrid::wxGridSelectColumns &&
rowSelectionWasChanged )
{
int numCols = m_grid->GetNumberCols();
for ( int colFrom = 0, colTo = 0; colTo <= numCols; ++colTo )
{
if ( m_colSelection.Index(colTo) >= 0 || colTo == numCols )
{
if ( colFrom < colTo )
{
if ( !m_grid->GetBatchCount() )
{
r = m_grid->BlockToDeviceRect(
wxGridCellCoords( row, colFrom ),
wxGridCellCoords( row, colTo-1 ) );
((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
}
wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
wxEVT_GRID_RANGE_SELECT,
m_grid,
wxGridCellCoords( row, colFrom ),
wxGridCellCoords( row, colTo - 1 ),
false,
kbd );
m_grid->GetEventHandler()->ProcessEvent( gridEvt );
}
colFrom = colTo + 1;
}
}
}
if ( m_selectionMode != wxGrid::wxGridSelectRows &&
colSelectionWasChanged )
{
int numRows = m_grid->GetNumberRows();
for ( int rowFrom = 0, rowTo = 0; rowTo <= numRows; ++rowTo )
{
if ( m_rowSelection.Index(rowTo) >= 0 || rowTo == numRows )
{
if (rowFrom < rowTo)
{
if ( !m_grid->GetBatchCount() )
{
r = m_grid->BlockToDeviceRect(
wxGridCellCoords( rowFrom, col ),
wxGridCellCoords( rowTo - 1, col ) );
((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
}
wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
wxEVT_GRID_RANGE_SELECT,
m_grid,
wxGridCellCoords( rowFrom, col ),
wxGridCellCoords( rowTo - 1, col ),
false,
kbd );
m_grid->GetEventHandler()->ProcessEvent( gridEvt );
}
rowFrom = rowTo + 1;
}
}
}
}
}
void wxGridSelection::SelectBlock( int topRow, int leftCol,
int bottomRow, int rightCol,
const wxKeyboardState& kbd,
bool sendEvent )
{
// Fix the coordinates of the block if needed.
switch ( m_selectionMode )
{
default:
wxFAIL_MSG( "unknown selection mode" );
// fall through
case wxGrid::wxGridSelectCells:
// nothing to do -- in this mode arbitrary blocks can be selected
break;
case wxGrid::wxGridSelectRows:
leftCol = 0;
rightCol = m_grid->GetNumberCols() - 1;
break;
case wxGrid::wxGridSelectColumns:
topRow = 0;
bottomRow = m_grid->GetNumberRows() - 1;
break;
case wxGrid::wxGridSelectRowsOrColumns:
// block selection doesn't make sense for this mode, we could only
// select the entire grid but this wouldn't be useful
return;
}
if ( topRow > bottomRow )
{
int temp = topRow;
topRow = bottomRow;
bottomRow = temp;
}
if ( leftCol > rightCol )
{
int temp = leftCol;
leftCol = rightCol;
rightCol = temp;
}
// Handle single cell selection in SelectCell.
// (MB: added check for selection mode here to prevent
// crashes if, for example, we are select rows and the
// grid only has 1 col)
if ( m_selectionMode == wxGrid::wxGridSelectCells &&
topRow == bottomRow && leftCol == rightCol )
{
SelectCell( topRow, leftCol, kbd, sendEvent );
}
size_t count, n;
if ( m_selectionMode == wxGrid::wxGridSelectRows )
{
// find out which rows are already selected:
wxArrayInt alreadyselected;
alreadyselected.Add(0,bottomRow-topRow+1);
for( n = 0; n < m_rowSelection.GetCount(); n++)
{
int row = m_rowSelection[n];
if( (row >= topRow) && (row <= bottomRow) )
{
alreadyselected[ row - topRow ]=1;
}
}
// add the newly selected rows:
for ( int row = topRow; row <= bottomRow; row++ )
{
if ( alreadyselected[ row - topRow ] == 0 )
{
m_rowSelection.Add( row );
}
}
}
else if ( m_selectionMode == wxGrid::wxGridSelectColumns )
{
// find out which columns are already selected:
wxArrayInt alreadyselected;
alreadyselected.Add(0,rightCol-leftCol+1);
for( n = 0; n < m_colSelection.GetCount(); n++)
{
int col = m_colSelection[n];
if( (col >= leftCol) && (col <= rightCol) )
{
alreadyselected[ col - leftCol ]=1;
}
}
// add the newly selected columns:
for ( int col = leftCol; col <= rightCol; col++ )
{
if ( alreadyselected[ col - leftCol ] == 0 )
{
m_colSelection.Add( col );
}
}
}
else
{
// Remove single cells contained in newly selected block.
if ( m_selectionMode == wxGrid::wxGridSelectCells )
{
count = m_cellSelection.GetCount();
for ( n = 0; n < count; n++ )
{
wxGridCellCoords& coords = m_cellSelection[n];
if ( BlockContainsCell( topRow, leftCol, bottomRow, rightCol,
coords.GetRow(), coords.GetCol() ) )
{
m_cellSelection.RemoveAt(n);
n--;
count--;
}
}
}
// If a block containing the selection is already selected, return,
// if a block contained in the selection is found, remove it.
count = m_blockSelectionTopLeft.GetCount();
for ( n = 0; n < count; n++ )
{
wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
switch ( BlockContain( coords1.GetRow(), coords1.GetCol(),
coords2.GetRow(), coords2.GetCol(),
topRow, leftCol, bottomRow, rightCol ) )
{
case 1:
return;
case -1:
m_blockSelectionTopLeft.RemoveAt(n);
m_blockSelectionBottomRight.RemoveAt(n);
n--;
count--;
break;
default:
break;
}
}
// If a row containing the selection is already selected, return,
// if a row contained in newly selected block is found, remove it.
count = m_rowSelection.GetCount();
for ( n = 0; n < count; n++ )
{
switch ( BlockContain( m_rowSelection[n], 0,
m_rowSelection[n], m_grid->GetNumberCols() - 1,
topRow, leftCol, bottomRow, rightCol ) )
{
case 1:
return;
case -1:
m_rowSelection.RemoveAt(n);
n--;
count--;
break;
default:
break;
}
}
// Same for columns.
count = m_colSelection.GetCount();
for ( n = 0; n < count; n++ )
{
switch ( BlockContain( 0, m_colSelection[n],
m_grid->GetNumberRows() - 1, m_colSelection[n],
topRow, leftCol, bottomRow, rightCol ) )
{
case 1:
return;
case -1:
m_colSelection.RemoveAt(n);
n--;
count--;
break;
default:
break;
}
}
m_blockSelectionTopLeft.Add( wxGridCellCoords( topRow, leftCol ) );
m_blockSelectionBottomRight.Add( wxGridCellCoords( bottomRow, rightCol ) );
}
// Update View:
if ( !m_grid->GetBatchCount() )
{
wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( topRow, leftCol ),
wxGridCellCoords( bottomRow, rightCol ) );
((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
}
// Send Event, if not disabled.
if ( sendEvent )
{
wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
wxEVT_GRID_RANGE_SELECT,
m_grid,
wxGridCellCoords( topRow, leftCol ),
wxGridCellCoords( bottomRow, rightCol ),
true,
kbd);
m_grid->GetEventHandler()->ProcessEvent( gridEvt );
}
}
void wxGridSelection::SelectCol(int col, const wxKeyboardState& kbd)
{
if ( m_selectionMode == wxGrid::wxGridSelectRows )
return;
size_t count, n;
// Remove single cells contained in newly selected block.
if ( m_selectionMode == wxGrid::wxGridSelectCells )
{
count = m_cellSelection.GetCount();
for ( n = 0; n < count; n++ )
{
wxGridCellCoords& coords = m_cellSelection[n];
if ( BlockContainsCell( 0, col, m_grid->GetNumberRows() - 1, col,
coords.GetRow(), coords.GetCol() ) )
{
m_cellSelection.RemoveAt(n);
n--;
count--;
}
}
}
// Simplify list of selected blocks (if possible)
count = m_blockSelectionTopLeft.GetCount();
bool done = false;
for ( n = 0; n < count; n++ )
{
wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
// Remove block if it is a subset of the column
if ( coords1.GetCol() == col && col == coords2.GetCol() )
{
m_blockSelectionTopLeft.RemoveAt(n);
m_blockSelectionBottomRight.RemoveAt(n);
n--;
count--;
}
else if ( coords1.GetRow() == 0 &&
coords2.GetRow() == m_grid->GetNumberRows() - 1 )
{
// silently return, if row is contained in block
if ( coords1.GetCol() <= col && col <= coords2.GetCol() )
return;
// expand block, if it touched col
else if ( coords1.GetCol() == col + 1)
{
coords1.SetCol(col);
done = true;
}
else if ( coords2.GetCol() == col - 1)
{
coords2.SetCol(col);
done = true;
}
}
}
// Unless we successfully handled the column,
// Check whether col is already selected.
if ( !done )
{
count = m_colSelection.GetCount();
for ( n = 0; n < count; n++ )
{
if ( col == m_colSelection[n] )
return;
}
// Add col to selection
m_colSelection.Add(col);
}
// Update View:
if ( !m_grid->GetBatchCount() )
{
wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( 0, col ),
wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
}
// Send Event
wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
wxEVT_GRID_RANGE_SELECT,
m_grid,
wxGridCellCoords( 0, col ),
wxGridCellCoords( m_grid->GetNumberRows() - 1, col ),
true,
kbd );
m_grid->GetEventHandler()->ProcessEvent( gridEvt );
}
void wxGridSelection::SelectBlock( int topRow, int leftCol,
int bottomRow, int rightCol,
bool ControlDown, bool ShiftDown,
bool AltDown, bool MetaDown,
bool sendEvent )
{
// Fix the coordinates of the block if needed.
if ( m_selectionMode == wxGrid::wxGridSelectRows )
{
leftCol = 0;
rightCol = m_grid->GetNumberCols() - 1;
}
else if ( m_selectionMode == wxGrid::wxGridSelectColumns )
{
topRow = 0;
bottomRow = m_grid->GetNumberRows() - 1;
}
if ( topRow > bottomRow )
{
int temp = topRow;
topRow = bottomRow;
bottomRow = temp;
}
if ( leftCol > rightCol )
{
int temp = leftCol;
leftCol = rightCol;
rightCol = temp;
}
// Handle single cell selection in SelectCell.
// (MB: added check for selection mode here to prevent
// crashes if, for example, we are select rows and the
// grid only has 1 col)
if ( m_selectionMode == wxGrid::wxGridSelectCells &&
topRow == bottomRow && leftCol == rightCol )
SelectCell( topRow, leftCol, ControlDown, ShiftDown,
AltDown, MetaDown, sendEvent );
size_t count, n;
// Remove single cells contained in newly selected block.
if ( m_selectionMode == wxGrid::wxGridSelectCells )
{
count = m_cellSelection.GetCount();
for ( n = 0; n < count; n++ )
{
wxGridCellCoords& coords = m_cellSelection[n];
if ( BlockContainsCell( topRow, leftCol, bottomRow, rightCol,
coords.GetRow(), coords.GetCol() ) )
{
m_cellSelection.RemoveAt(n);
n--; count--;
}
}
}
// If a block containing the selection is already selected, return,
// if a block contained in the selection is found, remove it.
count = m_blockSelectionTopLeft.GetCount();
for ( n = 0; n < count; n++ )
{
wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
switch ( BlockContain( coords1.GetRow(), coords1.GetCol(),
coords2.GetRow(), coords2.GetCol(),
topRow, leftCol, bottomRow, rightCol ) )
{
case 1:
return;
case -1:
m_blockSelectionTopLeft.RemoveAt(n);
m_blockSelectionBottomRight.RemoveAt(n);
n--; count--;
break;
default:
break;
}
}
// If a row containing the selection is already selected, return,
// if a row contained in newly selected block is found, remove it.
if ( m_selectionMode != wxGrid::wxGridSelectColumns )
{
count = m_rowSelection.GetCount();
for ( n = 0; n < count; n++ )
{
switch ( BlockContain( m_rowSelection[n], 0,
m_rowSelection[n], m_grid->GetNumberCols()-1,
topRow, leftCol, bottomRow, rightCol ) )
{
case 1:
return;
case -1:
m_rowSelection.RemoveAt(n);
n--; count--;
break;
default:
break;
}
}
}
if ( m_selectionMode != wxGrid::wxGridSelectRows )
{
count = m_colSelection.GetCount();
for ( n = 0; n < count; n++ )
{
switch ( BlockContain( 0, m_colSelection[n],
m_grid->GetNumberRows()-1, m_colSelection[n],
topRow, leftCol, bottomRow, rightCol ) )
{
case 1:
return;
case -1:
m_colSelection.RemoveAt(n);
n--; count--;
break;
default:
break;
}
}
}
m_blockSelectionTopLeft.Add( wxGridCellCoords( topRow, leftCol ) );
m_blockSelectionBottomRight.Add( wxGridCellCoords( bottomRow, rightCol ) );
// Update View:
if ( !m_grid->GetBatchCount() )
{
wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( topRow, leftCol ),
wxGridCellCoords( bottomRow, rightCol ) );
((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
}
// Send Event, if not disabled.
if ( sendEvent )
{
wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
wxEVT_GRID_RANGE_SELECT,
m_grid,
wxGridCellCoords( topRow, leftCol ),
wxGridCellCoords( bottomRow, rightCol ),
true,
ControlDown, ShiftDown,
AltDown, MetaDown );
m_grid->GetEventHandler()->ProcessEvent(gridEvt);
}
}
void wxGridSelection::SelectRow( int row,
bool ControlDown, bool ShiftDown,
bool AltDown, bool MetaDown )
{
if ( m_selectionMode == wxGrid::wxGridSelectColumns )
return;
size_t count, n;
// Remove single cells contained in newly selected block.
if ( m_selectionMode == wxGrid::wxGridSelectCells )
{
count = m_cellSelection.GetCount();
for ( n = 0; n < count; n++ )
{
wxGridCellCoords& coords = m_cellSelection[n];
if ( BlockContainsCell( row, 0, row, m_grid->GetNumberCols() - 1,
coords.GetRow(), coords.GetCol() ) )
{
m_cellSelection.RemoveAt(n);
n--; count--;
}
}
}
// Simplify list of selected blocks (if possible)
count = m_blockSelectionTopLeft.GetCount();
bool done = false;
for ( n = 0; n < count; n++ )
{
wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
// Remove block if it is a subset of the row
if ( coords1.GetRow() == row && row == coords2.GetRow() )
{
m_blockSelectionTopLeft.RemoveAt(n);
m_blockSelectionBottomRight.RemoveAt(n);
n--; count--;
}
else if ( coords1.GetCol() == 0 &&
coords2.GetCol() == m_grid->GetNumberCols() - 1 )
{
// silently return, if row is contained in block
if ( coords1.GetRow() <= row && row <= coords2.GetRow() )
return;
// expand block, if it touched row
else if ( coords1.GetRow() == row + 1)
{
coords1.SetRow(row);
done = true;
}
else if ( coords2.GetRow() == row - 1)
{
coords2.SetRow(row);
done = true;
}
}
}
// Unless we successfully handled the row,
// check whether row is already selected.
if ( !done )
{
count = m_rowSelection.GetCount();
for ( n = 0; n < count; n++ )
{
if ( row == m_rowSelection[n] )
return;
}
// Add row to selection
m_rowSelection.Add(row);
}
// Update View:
if ( !m_grid->GetBatchCount() )
{
wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, 0 ),
wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
((wxWindow *)m_grid->m_gridWin)->Refresh( false, &r );
}
// Send Event
wxGridRangeSelectEvent gridEvt( m_grid->GetId(),
wxEVT_GRID_RANGE_SELECT,
m_grid,
wxGridCellCoords( row, 0 ),
wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ),
true,
ControlDown, ShiftDown,
AltDown, MetaDown );
m_grid->GetEventHandler()->ProcessEvent(gridEvt);
}