protected void HandleParentCursorChanged(object sender, EventArgs e)
{
TreePath path;
TreeIter row;
TreeViewColumn col;
GetCursor(out path, out col);
if (Model.GetIter(out row, path) && col != null && CurrentButton != Mouse.RIGHT_MOUSE_BUTTON)
{
bool shiftDown = (CurrentKeyboardModifier & ModifierType.ShiftMask) != ModifierType.None;
bool ctrlDown = (CurrentKeyboardModifier & ModifierType.ControlMask) != ModifierType.None;
mSelectionHook = (shiftDown) ? mSelectionHook : new CellLocation(row, col);
List <CellLocation> selectedcells = new List <CellLocation>(SheetSelection.SelectedCells);
int col1 = (selectedcells.Count > 0) ? Array.IndexOf(Columns, mSelectionHook.Col) : -1;
if (col1 >= 0 && shiftDown)
{
SheetSelection.SelectRange(mSelectionHook.Row, col1, row, Array.IndexOf(Columns, col));
}
else
{
if (SheetSelection.IsSelected(row, col) && (ctrlDown || selectedcells.Count == 1))
{
SheetSelection.Unselect(row, col);
}
else
{
SheetSelection.Select(row, col, ctrlDown);
}
}
QueueDraw();
}
}
public void Unselect(CellLocation cell, bool notify = true)
{
if (SelectedCells.Remove(cell) && notify)
{
Notify();
}
}
public void Select(CellLocation cell, bool addToCurrentCellSelection, bool notify = true)
{
ClearSelectedRows(false);
ClearSelectedColumns(false);
if (!addToCurrentCellSelection)
{
ClearSelectedCells(false);
}
SelectedCells.Add(cell);
if (notify)
{
Notify();
}
}
public bool IsSelected(CellLocation cell)
{
return(SelectedCells.Contains(cell) ||
SelectedColumns.Contains(cell.Col) ||
SelectedRows.Contains(cell.Row));
}