Mouse events¶
Show how to react to mouse events.
Tags: mouse
import datoviz as dvz
app = dvz.App()
figure = app.figure()
@app.connect(figure)
def on_mouse(ev):
action = ev.mouse_event()
x, y = ev.pos()
print(f'{action} ({x:.0f}, {y:.0f}) ', end='')
if action in ('click', 'double_click'):
button = ev.button_name()
print(f'{button} button', end='')
if action in ('drag_start', 'drag_stop', 'drag'):
button = ev.button_name()
xd, yd = ev.press_pos()
print(f'{button} button pressed at ({xd:.0f}, {yd:.0f})', end='')
if action == 'wheel':
w = ev.wheel()
print(f'wheel direction {w}', end='')
print()
app.run()
app.destroy()