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 != 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();
}
}
protected override bool OnKeyPressEvent(EventKey evnt)
{
CurrentKeyboardModifier = evnt.State;
switch (evnt.Key)
{
case Gdk.Key.Left:
case Gdk.Key.KP_Left:
{
List <TreeViewColumn> selectedcols = new List <TreeViewColumn>(SheetSelection.SelectedColumns);
List <TreeViewColumn> visiblecols = (this as TreeView).VisibleColumns();
if (selectedcols.Count > 0)
{
int i = visiblecols.IndexOf(selectedcols[selectedcols.Count - 1]) - 1;
if (i < 0)
{
return(true);
}
SheetSelection.Select(visiblecols[i], (evnt.State & ModifierType.ShiftMask) != 0);
QueueDraw();
return(true);
}
List <CellLocation> selectedcells = new List <CellLocation>(SheetSelection.SelectedCells);
if (selectedcells.Count <= 0)
{
return(true);
}
int j = visiblecols.IndexOf(selectedcells[selectedcells.Count - 1].Col) - 1;
if (j < 0)
{
return(true);
}
if ((evnt.State & ModifierType.ShiftMask) == 0)
{
SheetSelection.Select(selectedcells[selectedcells.Count - 1].Row, visiblecols[j], false);
QueueDraw();
return(true);
}
else
{
// not implemented yet
//SelectRange(row1, col1, row2, col2);
return(true);
}
}
case Gdk.Key.Right:
case Gdk.Key.KP_Right:
{
List <TreeViewColumn> selectedcols = new List <TreeViewColumn>(SheetSelection.SelectedColumns);
List <TreeViewColumn> visiblecols = (this as TreeView).VisibleColumns();
if (selectedcols.Count > 0)
{
int i = visiblecols.IndexOf(selectedcols[selectedcols.Count - 1]) + 1;
if (i <= 0 || i >= visiblecols.Count)
{
return(true);
}
SheetSelection.Select(visiblecols[i], (evnt.State & ModifierType.ShiftMask) != 0);
QueueDraw();
return(true);
}
List <CellLocation> selectedcells = new List <CellLocation>(SheetSelection.SelectedCells);
if (selectedcells.Count <= 0)
{
return(true);
}
int j = visiblecols.IndexOf(selectedcells[selectedcells.Count - 1].Col) + 1;
if (j <= 0 || j >= visiblecols.Count)
{
return(true);
}
if ((evnt.State & ModifierType.ShiftMask) == 0)
{
SheetSelection.Select(selectedcells[selectedcells.Count - 1].Row, visiblecols[j], false);
QueueDraw();
return(true);
}
else
{
// not implemented yet
//SelectRange(row1, col1, row2, col2);
return(true);
}
}
case Gdk.Key.Up:
case Gdk.Key.KP_Up:
{
List <CellLocation> selectedcells = new List <CellLocation>(SheetSelection.SelectedCells);
if (selectedcells.Count <= 0)
{
return(true);
}
TreeIter row = selectedcells[selectedcells.Count - 1].Row;
if (!Model.IterPrev(ref row))
{
return(true);
}
if ((evnt.State & ModifierType.ShiftMask) == 0)
{
SheetSelection.Select(row, selectedcells[selectedcells.Count - 1].Col, false);
QueueDraw();
return(true);
}
else
{
// not implemented yet
//SelectRange(row1, col1, row2, col2);
return(true);
}
}
case Gdk.Key.Down:
case Gdk.Key.KP_Down:
{
List <CellLocation> selectedcells = new List <CellLocation>(SheetSelection.SelectedCells);
if (selectedcells.Count <= 0)
{
return(true);
}
TreeIter row = selectedcells[selectedcells.Count - 1].Row;
if (!Model.IterNext(ref row))
{
return(true);
}
if ((evnt.State & ModifierType.ShiftMask) == 0)
{
SheetSelection.Select(row, selectedcells[selectedcells.Count - 1].Col, false);
QueueDraw();
return(true);
}
else
{
// not implemented yet
//SelectRange(row1, col1, row2, col2);
return(true);
}
}
}
// We do _not_ invoke
// base.OnKeyPressEvent(evnt);
// here. We want to have FULL control about what key does what.
// No inherited logic from our parent class.
//return base.OnKeyPressEvent(evnt);
return(true);
}