def __init__(self, algorithm, listener, profile, interpreter, debug=False):
self._matcher = Matcher(algorithm, interpreter, self._position_changed,
debug)
self._capturer = Capturer(listener, self._handle_buckets)
self._display = None
self._running = False
self._debug = debug
class MusicStand(object):
"""
An intelligent digital music stand.
"""
def __init__(self, algorithm, listener, profile, interpreter, debug=False):
self._matcher = Matcher(algorithm, interpreter, self._position_changed,
debug)
self._capturer = Capturer(listener, self._handle_buckets)
self._display = None
self._running = False
self._debug = debug
def run(self):
"""
Runs the music stand.
This method will not return until the application exits.
"""
callbacks = dict(song_loaded=self._start_song,
song_stopped=self._abort_song, song_restarted=self._restart_song)
self._capturer.start() # also starts the listener
self._matcher.start()
try:
self._running = True
root = Tk()
self._display = Display(root, callbacks, self._debug)
# run the Tkinter event loop
root.mainloop()
except KeyboardInterrupt:
print
finally:
self._running = False
self._matcher.shutdown()
self._capturer.stop() # similarly, also stops the listener
def _start_song(self, lilypond_file):
if self._debug:
print 'Song loaded: %s' % lilypond_file
notes = parse_file(lilypond_file)
self._matcher.load_piece(notes)
def _abort_song(self):
self._matcher.stop_piece()
def _restart_song(self):
self._display.reset_song_positions()
self._display.reset_sheetmusic()
self._matcher.restart_piece()
def _handle_buckets(self, buckets):
# XXX: this is dumb
notes = [p[0] for p in sorted(buckets, key=lambda b: b[1],
reverse=True)]
self._matcher.add(notes)
def _position_changed(self, matcher):
if matcher.intervals is None:
return
self._display.update_position(matcher)
if matcher.current_location >= (len(matcher.intervals) - 1):
if self._debug:
print 'Done with the piece!'
