class MainWidget4(BaseWidget):
def __init__(self):
super(MainWidget4, self).__init__()
self.audio = Audio(2)
self.synth = Synth('../data/FluidR3_GM.sf2')
self.audio.set_generator(self.synth)
# create clock, tempo_map, scheduler
self.clock = Clock()
self.tempo_map = SimpleTempoMap(120)
self.sched = Scheduler(self.clock, self.tempo_map)
# create the metronome:
self.metro = Metronome(self.sched, self.synth)
# and text to display our status
self.label = topleft_label()
self.add_widget(self.label)
def on_key_down(self, keycode, modifiers):
if keycode[1] == 'c':
self.clock.toggle()
if keycode[1] == 'm':
self.metro.toggle()
bpm_adj = lookup(keycode[1], ('up', 'down'), (10, -10))
if bpm_adj:
new_tempo = self.tempo_map.get_tempo() + bpm_adj
self.tempo_map.set_tempo(new_tempo, self.sched.get_time())
def on_update(self):
# scheduler and audio get poked every frame
self.sched.on_update()
self.audio.on_update()
bpm = self.tempo_map.get_tempo()
self.label.text = self.sched.now_str() + '\n'
self.label.text += 'Metronome:' + ("ON" if self.metro.playing else
"OFF") + '\n'
self.label.text += 'tempo:{}\n'.format(bpm)
self.label.text += 'm: toggle Metronome\n'
self.label.text += 'up/down: change speed\n'
class MainWidget3(BaseWidget):
def __init__(self):
super(MainWidget3, self).__init__()
# create a clock and TempoMap
self.clock = Clock()
self.tempo = SimpleTempoMap(120)
# create a Scheduler
self.sched = Scheduler(self.clock, self.tempo)
# and text to display our status
self.label = topleft_label()
self.add_widget(self.label)
# to see accumulated output:
self.output_text = ''
def on_key_down(self, keycode, modifiers):
if keycode[1] == 'c':
self.clock.toggle()
if keycode[1] == 'a':
now = self.sched.get_tick()
later = now + (2 * kTicksPerQuarter)
self.output_text += "now={}. post at tick={}\n".format(now, later)
self.cmd = self.sched.post_at_tick(self._do_it, later, 'hello')
if keycode[1] == 'b':
self.sched.remove(self.cmd)
def _do_it(self, tick, msg):
self.output_text += "{} (at {})\n".format(msg, tick)
def on_update(self):
# scheduler gets called every frame to process events
self.sched.on_update()
self.label.text = self.sched.now_str() + '\n'
self.label.text += 'c: toggle clock\n'
self.label.text += 'a: post event\n'
self.label.text += 'b: remove event\n'
self.label.text += self.output_text