Function key_event

src/plot_state.rs:1919–1929

(key: keyboard::Key, code: keyboard::key::Code)

                Event::ButtonPressed(mouse::Button::Left),
                mouse::Cursor::Available(Point::new(50.0, 50.0)),
                &widget,
                &mut hover_pick,
                &mut drag_event,
            );
            state.handle_mouse_event(
                Event::ButtonReleased(mouse::Button::Left),
                mouse::Cursor::Available(Point::new(50.0, 50.0)),
                &widget,
                &mut hover_pick,
                &mut drag_event,
            );
        }

        assert_eq!(state.camera.position, DVec2::new(20.0, 40.0));