etl::handle<synfig::Canvas> canvas;
sigc::signal<void> signal_value_changed_;
sigc::signal<void> signal_activate_;
etl::handle<synfig::Canvas> canvas;
sigc::signal<void> signal_value_changed_;
sigc::signal<void> signal_activate_;
void set_param_desc(const synfig::ParamDesc &x) { param_desc=x; }
const synfig::ParamDesc &get_param_desc() { return param_desc; }
void set_param_desc(const synfig::ParamDesc &x) { param_desc=x; }
const synfig::ParamDesc &get_param_desc() { return param_desc; }