class Application(object):
def __init__(self, window, *a, **kw):
super(Application, self).__init__(*a, **kw)
self._window = window
# Create and start an audio thread.
# It's going to communicate with the main thread through a thread-safe queue.
self._notes_queue = Queue(maxsize=1)
self._rompler = Rompler(name="AudioThread",
notes_queue=self._notes_queue)
self._rompler.start()
# Create the app's GUI
self._view = MainView(window, self._rompler)
# Stop the audio thread when the app is closing
window.protocol("WM_DELETE_WINDOW", self._on_closing)
window.bind("<Key>", self._handle_keypress)
window.bind("<KeyRelease>", self._handle_keyrelease)
def _on_closing(self):
self._rompler.stop.set()
self._window.destroy()
def _handle_keypress(self, event):
try:
key = event.char
midi_note = KEYBOARD_KEY_TO_MIDI_NOTE[key]
self._notes_queue.put(midi_note)
self._view.on_key_pressed(key)
except KeyError:
# note not supported
pass
def _handle_keyrelease(self, event):
key = event.char
self._view.on_key_released(key)
