class PianoApp(wx.App):
config = None
functions_keymap = {}
multi_voice = False
active_channels = []
current_channel = 0
def OnInit(self):
try:
self.load_config()
self.init_piano()
self.init_ui()
return True
except UserError as user_error:
wx.MessageBox(str(user_error), 'Erro', wx.OK | wx.ICON_ERROR)
return False
def load_config(self):
self.config = Config(app.config_file_path())
def init_piano(self):
self.create_midi_driver()
self.piano = Piano(self.config.get_keymap_file_path('pianoeletronico.kmp'), self.midi_output)
self.active_channels.append(0)
self.piano.set_instrument(0, 0)
def create_midi_driver(self):
midi_output_factory = MidiOutputFactory()
midi_output_driver = self.config.get_midi_output_driver(constants.MIDI_OUTPUT_DEFAULT_DRIVER)
if midi_output_driver >= constants.MIDI_OUTPUT_DEFAULT_DRIVER:
self.midi_output = midi_output_factory.factory_pygame(midi_output_driver )
elif midi_output_driver == constants.MIDI_OUTPUT_FLUIDSYNTH_DRIVER:
self.midi_output = midi_output_factory.factory_fluidsynth(self.config.get_soundfont_file_path())
else:
raise UserError('Erro de configuração: MIDI driver inexistente')
def init_ui(self):
self.mainFrame = wx.Frame(parent = None, id = -1, title = 'Virtual Piano')
self.mainFrame.Bind(wx.EVT_KEY_DOWN, self.on_key_down)
self.mainFrame.Bind(wx.EVT_KEY_UP, self.on_key_up)
self.functions_keymap = {
wx.WXK_RIGHT: lambda evt: self.piano.next_instrument(self.current_channel),
wx.WXK_LEFT: lambda evt: self.piano.previous_instrument(self.current_channel),
wx.WXK_UP: lambda evt: self.tone_change_up(evt),
wx.WXK_DOWN: lambda evt: self.tone_change_down(evt),
wx.WXK_PAGEUP: lambda evt: self.next_channel(),
wx.WXK_PAGEDOWN: lambda evt: self.previous_channel(),
wx.WXK_DELETE: lambda evt: self.delete_current_channel(),
wx.WXK_F2: lambda evt: self.select_instrument_by_number(self.current_channel),
wx.WXK_F8: lambda evt: self.piano.volume_down(self.current_channel),
wx.WXK_F9: lambda evt: self.piano.volume_up(self.current_channel),
wx.WXK_BACK: self.toggle_multi_voice,
wx.WXK_TAB: self.pan,
}
self.mainFrame.Show(True)
def on_key_down(self, evt):
key = evt.GetKeyCode()
if key in self.functions_keymap:
self.functions_keymap[key](evt)
if self.multi_voice:
for channel_number in self.active_channels:
note = self.get_note_from_key_event(evt, channel_number)
if note is not None:
self.piano.note_on(note, channel_number)
else:
note = self.get_note_from_key_event(evt, self.current_channel)
if note is not None:
self.piano.note_on(note, self.current_channel)
def on_key_up(self, evt):
if self.multi_voice:
for channel_number in self.active_channels:
note = self.get_note_from_key_event(evt, channel_number)
if note is not None:
self.piano.note_off(note, channel_number)
else:
note = self.get_note_from_key_event(evt, self.current_channel)
if note is not None:
self.piano.note_off(note, self.current_channel)
def get_note_from_key_event(self, evt, channel_number):
key = evt.GetUnicodeKey()
if key != wx.WXK_NONE:
if key > 127:
key = char.unicode_workaround(chr(key).encode('utf-8'))
return self.piano.get_note(key, channel_number)
def toggle_multi_voice(self, evt):
self.piano.all_notes_off()
self.multi_voice = not self.multi_voice
def pan(self, evt):
back = True if evt.GetModifiers() == wx.MOD_SHIFT else False
self.piano.pan(back, self.current_channel)
def next_channel(self):
if self.current_channel == 15:
return
self.piano.all_notes_off()
self.current_channel += 1
if not self.current_channel in self.active_channels:
self.active_channels.append(self.current_channel)
self.piano.get_channel(self.current_channel)
def previous_channel(self):
if self.current_channel == 0:
return
self.piano.all_notes_off()
self.current_channel -= 1
def delete_current_channel(self):
self.piano.delete_channel(self.current_channel)
self.active_channels.remove(self.current_channel)
self.current_channel -= 1
def tone_change_up(self, evt):
key_modifier = evt.GetModifiers()
if key_modifier == wx.MOD_SHIFT:
self.piano.semitone_up(1, self.current_channel)
else:
self.piano.octave_up(self.current_channel)
def tone_change_down(self, evt):
key_modifier = evt.GetModifiers()
if key_modifier == wx.MOD_SHIFT:
self.piano.semitone_down(1, self.current_channel)
else:
self.piano.octave_down(self.current_channel)
def select_instrument_by_number(self, target_channel):
current_instrument = str(self.piano.get_instrument_for_channel(target_channel) + 1)
pressed_ok, selected_instrument = edit_dialog(self.mainFrame, "Instrument", "Enter instrument number for channel %d (from 1 to 128):" % target_channel, current_instrument)
if pressed_ok:
try:
instrument_number = int(selected_instrument) - 1
except ValueError:
message_dialog(self.mainFrame, "Error", "Instrument not a number")
return
if instrument_number < 0 or instrument_number > 127:
message_dialog(self.mainFrame, "Error", "Instrument number not in range from 1 to 128")
return
self.piano.set_instrument(instrument_number, target_channel)
class PianoApp(wx.App):
functions_keymap = {}
multi_voice = False
def OnInit(self):
self.init_piano()
self.init_ui()
return True
def init_piano(self):
keymap_filename = 'pianoeletronico.kmp'
notes_manager = NotesManager()
notes_manager.load_file(util.app_file_path(os.path.join('keymaps', keymap_filename)))
self.midi = midi.Midi()
self.midi_output = midi.Output(self.midi.get_default_output_id(), 0)
self.piano = Piano(notes_manager, self.midi_output)
self.piano.set_instrument(0, 0)
def init_ui(self):
self.mainFrame = wx.Frame(parent = None, id = -1, title = 'Virtual Piano')
self.Bind(wx.EVT_KEY_DOWN, self.on_key_down)
self.Bind(wx.EVT_KEY_UP, self.on_key_up)
self.functions_keymap = {
wx.WXK_RIGHT: lambda evt: self.piano.next_instrument(),
wx.WXK_LEFT: lambda evt: self.piano.previous_instrument(),
wx.WXK_UP: lambda evt: self.piano.octave_up(),
wx.WXK_DOWN: lambda evt: self.piano.octave_down(),
wx.WXK_PAGEUP: lambda evt: self.piano.next_channel(),
wx.WXK_PAGEDOWN: lambda evt: self.piano.previous_channel(),
wx.WXK_DELETE: lambda evt: self.piano.delete_current_channel(),
wx.WXK_F8: lambda evt: self.piano.volume_down(),
wx.WXK_F9: lambda evt: self.piano.volume_up(),
wx.WXK_BACK: self.toggle_multi_voice,
wx.WXK_TAB: self.pan,
}
self.mainFrame.Show(True)
def on_key_down(self, evt):
note = self.get_note_from_key_event(evt)
if note is None:
key = evt.GetKeyCode()
if key in self.functions_keymap:
self.functions_keymap[key](evt)
else:
if self.multi_voice:
self.piano.note_on_multi(note)
else:
self.piano.note_on(note)
def on_key_up(self, evt):
note = self.get_note_from_key_event(evt)
if note is None:
return
if self.multi_voice:
self.piano.note_off_multi(note)
else:
self.piano.note_off(note)
def get_note_from_key_event(self, evt):
key = evt.GetUnicodeKey()
if key != wx.WXK_NONE:
if key > 127:
key = unicode_workaround(chr(key).encode('utf-8'))
return self.piano.notes_manager[key] if key in self.piano.notes_manager else None
def toggle_multi_voice(self, evt):
self.piano.all_notes_off()
self.multi_voice = not self.multi_voice
def pan(self, evt):
back = True if evt.GetModifiers() == wx.MOD_SHIFT else False
self.piano.pan(back)
