private void ink_StrokeErasing(object sender, InkCanvasStrokeErasingEventArgs e)
{
// _undoStack.Add(e.Stroke, true);
Models.UndoStack undo = new Models.UndoStack();
undo.isErase = true;
undo.stroke = e.Stroke;
_undoStackModel.Add(undo);
}
private void UndoRedoCommand(bool isUndo)
{
try
{
if (isUndo)
{
Models.RedoStack redo = new Models.RedoStack();
redo.isErase = _undoStackModel.Last().isErase;
redo.stroke = _undoStackModel.Last().stroke;
_redoStackModel.Add(redo);
if (!_undoStackModel.Last().isErase)
{
ink.Strokes.Remove(_undoStackModel.Last().stroke);
}
else
{
ink.Strokes.Add(_undoStackModel.Last().stroke);
}
_undoStackModel.Remove(_undoStackModel.Last());
}
else
{
Models.UndoStack undo = new Models.UndoStack();
undo.isErase = _redoStackModel.Last().isErase;
undo.stroke = _redoStackModel.Last().stroke;
_undoStackModel.Add(undo);
if (_undoStackModel.Last().isErase)
{
ink.Strokes.Remove(_undoStackModel.Last().stroke);
}
else
{
ink.Strokes.Add(_undoStackModel.Last().stroke);
}
_redoStackModel.Remove(_redoStackModel.Last());
}
}
catch (Exception e)
{
//Throw error message
}
}
