#pragma hdrstop
#endif
+#if defined(wxUSE_NEW_GRID) && (wxUSE_NEW_GRID)
+
#include "wx/generic/gridsel.h"
+// Some explanation for the members of the class:
+// m_cellSelection stores individual selected cells
+// -- this is only used if m_selectionMode == wxGridSelectCells
+// m_blockSelectionTopLeft and m_blockSelectionBottomRight
+// store the upper left and lower right corner of selected Blocks
+// m_rowSelection and m_colSelection store individual selected
+// rows and columns; maybe those are superfluous and should be
+// treated as blocks?
+
wxGridSelection::wxGridSelection( wxGrid * grid,
wxGrid::wxGridSelectionModes sel )
{
bool wxGridSelection::IsInSelection ( int row, int col )
{
- size_t count;
- if ( m_selectionMode != wxGrid::wxGridSelectRows &&
- m_selectionMode != wxGrid::wxGridSelectColumns )
+ 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++ )
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++ )
{
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 )
{
size_t count = m_rowSelection.GetCount();
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 )
{
size_t count = m_colSelection.GetCount();
return false;
}
+// Change the selection mode
+void wxGridSelection::SetSelectionMode(wxGrid::wxGridSelectionModes selmode)
+{
+ // if selection mode is unchanged return immediately
+ if (selmode == m_selectionMode)
+ return;
+
+ if ( m_selectionMode != wxGrid::wxGridSelectCells )
+ {
+ // if changing form row to column selection
+ // or vice versa, clear the selection.
+ if ( selmode != wxGrid::wxGridSelectCells )
+ ClearSelection();
+
+ m_selectionMode = selmode;
+ }
+ else
+ {
+ // if changing from cell selection to something else,
+ // promote selected cells/blocks to whole rows/columns.
+ size_t n;
+ while ( ( n = m_cellSelection.GetCount() ) > 0 )
+ {
+ n--;
+ wxGridCellCoords& coords = m_cellSelection[n];
+ int row = coords.GetRow();
+ int col = coords.GetCol();
+ m_cellSelection.RemoveAt(n);
+ if (selmode == wxGrid::wxGridSelectRows)
+ SelectRow( row );
+ else // selmode == wxGridSelectColumns)
+ SelectCol( col );
+ }
+ while( ( n = m_blockSelectionTopLeft.GetCount() ) > 0)
+ {
+ n--;
+ wxGridCellCoords& coords = m_blockSelectionTopLeft[n];
+ int topRow = coords.GetRow();
+ int leftCol = coords.GetCol();
+ coords = m_blockSelectionBottomRight[n];
+ int bottomRow = coords.GetRow();
+ int rightCol = coords.GetCol();
+ if (selmode == wxGrid::wxGridSelectRows)
+ {
+ if (leftCol != 0 || rightCol != m_grid->GetNumberCols() - 1 )
+ {
+ m_blockSelectionTopLeft.RemoveAt(n);
+ m_blockSelectionBottomRight.RemoveAt(n);
+ SelectBlock( topRow, 0,
+ bottomRow, m_grid->GetNumberCols() - 1 );
+ }
+ }
+ else // selmode == wxGridSelectColumns)
+ {
+ if (topRow != 0 || bottomRow != m_grid->GetNumberRows() - 1 )
+ {
+ m_blockSelectionTopLeft.RemoveAt(n);
+ m_blockSelectionBottomRight.RemoveAt(n);
+ SelectBlock( 0, leftCol,
+ m_grid->GetNumberRows() - 1, rightCol );
+ }
+ }
+ }
+ }
+}
+
void wxGridSelection::SelectRow( int row, bool addToSelected )
{
if ( m_selectionMode == wxGrid::wxGridSelectColumns )
return;
- size_t count;
+ size_t count, n;
// Remove single cells contained in newly selected block.
- if ( m_selectionMode != wxGrid::wxGridSelectRows &&
- m_selectionMode != wxGrid::wxGridSelectColumns )
+ if ( m_selectionMode == wxGrid::wxGridSelectCells )
{
count = m_cellSelection.GetCount();
- for ( size_t n = 0; n < count; n++ )
+ for ( n = 0; n < count; n++ )
{
wxGridCellCoords& coords = m_cellSelection[n];
if ( BlockContainsCell( row, 0, row, m_grid->GetNumberCols() - 1,
}
}
- // If possible, merge row with existing selected block
+ // Simplify list of selected blocks (if possible)
count = m_blockSelectionTopLeft.GetCount();
- size_t n;
+ 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);
- return;
+ done = true;
}
else if ( coords2.GetRow() == row - 1)
{
coords2.SetRow(row);
- return;
+ done = true;
}
}
}
- // Check whether row is already selected.
- count = m_rowSelection.GetCount();
- for ( n = 0; n < count; n++ )
+ // Unless we successfully handled the row,
+ // check whether row is already selected.
+ if ( !done )
{
- if ( row == m_rowSelection[n] )
- return;
- }
+ count = m_rowSelection.GetCount();
+ for ( n = 0; n < count; n++ )
+ {
+ if ( row == m_rowSelection[n] )
+ return;
+ }
- // Add row to selection
- m_rowSelection.Add(row);
+ // Add row to selection
+ m_rowSelection.Add(row);
+ }
// Update View:
wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, 0 ),
wxGridCellCoords( row, m_grid->GetNumberCols() - 1 ) );
if ( !m_grid->GetBatchCount() )
((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
+
+ // Possibly send event here? This would imply that no event is sent,
+ // if the row already was part of the selection.
}
void wxGridSelection::SelectCol( int col, bool addToSelected )
{
if ( m_selectionMode == wxGrid::wxGridSelectRows )
return;
- size_t count;
+ size_t count, n;
// Remove single cells contained in newly selected block.
- if ( m_selectionMode != wxGrid::wxGridSelectRows &&
- m_selectionMode != wxGrid::wxGridSelectColumns )
+ if ( m_selectionMode == wxGrid::wxGridSelectCells )
{
count = m_cellSelection.GetCount();
- for ( size_t n = 0; n < count; n++ )
+ for ( n = 0; n < count; n++ )
{
wxGridCellCoords& coords = m_cellSelection[n];
if ( BlockContainsCell( 0, col, m_grid->GetNumberRows() - 1, col,
}
}
- // If possible, merge col with existing selected block
+ // Simplify list of selected blocks (if possible)
count = m_blockSelectionTopLeft.GetCount();
- size_t n;
+ 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);
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);
- return;
+ done = true;
}
else if ( coords2.GetCol() == col - 1)
{
coords2.SetCol(col);
- return;
+ done = true;
}
}
}
+ // Unless we successfully handled the column,
// Check whether col is already selected.
- count = m_colSelection.GetCount();
- for ( n = 0; n < count; n++ )
+ if ( !done )
{
- if ( col == m_colSelection[n] )
- return;
- }
+ count = m_colSelection.GetCount();
+ for ( n = 0; n < count; n++ )
+ {
+ if ( col == m_colSelection[n] )
+ return;
+ }
- // Add col to selection
- m_colSelection.Add(col);
+ // Add col to selection
+ m_colSelection.Add(col);
+ }
// Update View:
wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( 0, col ),
wxGridCellCoords( m_grid->GetNumberRows() - 1, col ) );
if ( !m_grid->GetBatchCount() )
((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
+
+ // Possibly send event here? This would imply that no event is sent,
+ // if the row already was part of the selection.
}
void wxGridSelection::SelectBlock( int topRow, int leftCol, int bottomRow, int rightCol )
if ( topRow == bottomRow && leftCol == rightCol )
SelectCell( topRow, leftCol );
- size_t count;
+ size_t count, n;
// Remove single cells contained in newly selected block.
- if ( m_selectionMode != wxGrid::wxGridSelectRows &&
- m_selectionMode != wxGrid::wxGridSelectColumns )
+ if ( m_selectionMode == wxGrid::wxGridSelectCells )
{
count = m_cellSelection.GetCount();
- for ( size_t n = 0; n < count; n++ )
+ for ( n = 0; n < count; n++ )
{
wxGridCellCoords& coords = m_cellSelection[n];
if ( BlockContainsCell( topRow, leftCol, bottomRow, rightCol,
// if a block contained in the selection is found, remove it.
count = m_blockSelectionTopLeft.GetCount();
- for ( size_t n = 0; n < count; n++ )
+ for ( n = 0; n < count; n++ )
{
wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
// if a row contained in newly selected block is found, remove it.
if ( m_selectionMode != wxGrid::wxGridSelectColumns )
{
- size_t count = m_rowSelection.GetCount();
- for ( size_t n = 0; n < count; n++ )
+ count = m_rowSelection.GetCount();
+ for ( n = 0; n < count; n++ )
{
switch ( BlockContain( m_rowSelection[n], 0,
m_rowSelection[n], m_grid->GetNumberCols()-1,
}
if ( m_selectionMode != wxGrid::wxGridSelectRows )
{
- size_t count = m_colSelection.GetCount();
- for ( size_t n = 0; n < count; n++ )
+ count = m_colSelection.GetCount();
+ for ( n = 0; n < count; n++ )
{
switch ( BlockContain( 0, m_colSelection[n],
m_grid->GetNumberRows()-1, m_colSelection[n],
wxGridCellCoords( bottomRow, rightCol ) );
if ( !m_grid->GetBatchCount() )
((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
+
+ // Possibly send event?
}
void wxGridSelection::SelectCell( int row, int col)
return;
m_cellSelection.Add( wxGridCellCoords( row, col ) );
+ // Update View:
wxRect r = m_grid->BlockToDeviceRect( wxGridCellCoords( row, col ),
wxGridCellCoords( row, col ) );
if ( !m_grid->GetBatchCount() )
((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
+
+ // Possibly send event?
}
void wxGridSelection::ToggleCellSelection( int row, int col)
{
+ // if the cell is not selected, select it
if ( !IsInSelection ( row, col ) )
{
SelectCell( row, col );
return;
}
- size_t count;
- // Maybe we want to toggle a member of m_cellSelection.
- // Then it can't be contained in rows/cols/block, and we
- // just have to remove it from m_cellSelection.
+ // 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::wxGridSelectRows &&
- m_selectionMode != wxGrid::wxGridSelectColumns )
+ if ( m_selectionMode == wxGrid::wxGridSelectCells )
{
count = m_cellSelection.GetCount();
- for ( size_t n = 0; n < count; n++ )
+ for ( n = 0; n < count; n++ )
{
wxGridCellCoords& coords = m_cellSelection[n];
if ( row == coords.GetRow() && col == coords.GetCol() )
}
}
- // remove a cell from the middle of a block (the really ugly case)
+ // 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 ( size_t n = 0; n < count; n++ )
+ for ( n = 0; n < count; n++ )
{
wxGridCellCoords& coords1 = m_blockSelectionTopLeft[n];
wxGridCellCoords& coords2 = m_blockSelectionBottomRight[n];
// remove a cell from a row, adding up to two new blocks
if ( m_selectionMode != wxGrid::wxGridSelectColumns )
{
- size_t count = m_rowSelection.GetCount();
- for ( size_t n = 0; n < count; n++ )
+ count = m_rowSelection.GetCount();
+ for ( n = 0; n < count; n++ )
{
if ( m_rowSelection[n] == row )
{
// remove a cell from a column, adding up to two new blocks
if ( m_selectionMode != wxGrid::wxGridSelectRows )
{
- size_t count = m_colSelection.GetCount();
- for ( size_t n = 0; n < count; n++ )
+ count = m_colSelection.GetCount();
+ for ( n = 0; n < count; n++ )
{
if ( m_colSelection[n] == col )
{
}
}
}
+
+ // Refresh the screen; according to m_selectionMode, we
+ // need to either update only the cell, or the whole row/column.
wxRect r;
switch (m_selectionMode)
{
void wxGridSelection::ClearSelection()
{
+ // Should this send deselection events?
size_t n;
- if ( m_selectionMode != wxGrid::wxGridSelectRows &&
- m_selectionMode != wxGrid::wxGridSelectColumns )
+
+ // deselect all invidiual cells and update the screen
+ if ( m_selectionMode == wxGrid::wxGridSelectCells )
{
while( ( n = m_cellSelection.GetCount() ) > 0)
((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
}
}
+
+ // deselect all blocks and update the screen
while( ( n = m_blockSelectionTopLeft.GetCount() ) > 0)
{
wxRect r;
if ( !m_grid->GetBatchCount() )
((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
}
+
+ // deselect all rows and update the screen
if ( m_selectionMode != wxGrid::wxGridSelectColumns )
{
while( ( n = m_rowSelection.GetCount() ) > 0)
((wxWindow *)m_grid->m_gridWin)->Refresh( FALSE, &r );
}
}
+
+ // deselect all columns and update the screen
if ( m_selectionMode != wxGrid::wxGridSelectRows )
{
while( ( n = m_colSelection.GetCount() ) > 0)
return -1;
return 0;
}
+
+#endif
projects / wxWidgets.git / commitdiff
