snap_grid->add(*icon2);
snap_grid->signal_toggled().connect(
sigc::mem_fun(*this, &studio::CanvasView::toggle_snap_grid));
snap_grid->add(*icon2);
snap_grid->signal_toggled().connect(
sigc::mem_fun(*this, &studio::CanvasView::toggle_snap_grid));
onion_skin->add(*icon3);
onion_skin->signal_toggled().connect(
sigc::mem_fun(*this, &studio::CanvasView::toggle_onion_skin));
onion_skin->add(*icon3);
onion_skin->signal_toggled().connect(
sigc::mem_fun(*this, &studio::CanvasView::toggle_onion_skin));