helpers/mapping.py

   1 from kivy.uix.relativelayout import RelativeLayout
   2 from kivy.properties import NumericProperty, ListProperty
   3 from kivy.core.window import Window
   4 from kivy.clock import Clock
   5
   6 import threading
   7 import yaml
   8 import sys
   9
  10 from .music_file import *
  11 from .mixer import Mixer
  12 from . import Config, gain, error_print
  13 from .music_effect import GainEffect
  14
  15 class Mapping(RelativeLayout):
  16     expected_keys = NumericProperty(0)
  17     master_volume = NumericProperty(100)
  18     ready_color = ListProperty([1, 165/255, 0, 1])
  19
  20     def __init__(self, **kwargs):
  21         if Config.builtin_mixing:
  22             self.mixer = Mixer()
  23         else:
  24             self.mixer = None
  25         self.key_config, self.open_files = self.parse_config()
  26         super(Mapping, self).__init__(**kwargs)
  27         self._keyboard = Window.request_keyboard(self._keyboard_closed, self)
  28         self._keyboard.bind(on_key_down=self._on_keyboard_down)
  29         self.running = []
  30         Clock.schedule_interval(self.not_all_keys_ready, 1)
  31
  32     @property
  33     def master_gain(self):
  34         return gain(self.master_volume)
  35
  36     def set_master_volume(self, value, delta=False, fade=0):
  37         [db_gain, self.master_volume] = gain(
  38                 value + int(delta) * self.master_volume,
  39                 self.master_volume)
  40
  41         for music in self.open_files.values():
  42             if not (music.is_loaded_playing() or music.is_loaded_paused()):
  43                 continue
  44
  45             if fade > 0:
  46                 music.gain_effects.append(GainEffect(
  47                     "fade",
  48                     music.current_audio_segment,
  49                     music.current_loop,
  50                     music.sound_position,
  51                     music.sound_position + fade,
  52                     gain=db_gain))
  53             else:
  54                 music.set_gain(db_gain)
  55
  56     def _keyboard_closed(self):
  57         self._keyboard.unbind(on_key_down=self._on_keyboard_down)
  58         self._keyboard = None
  59
  60     def _on_keyboard_down(self, keyboard, keycode, text, modifiers):
  61         key = self.find_by_key_code(keycode)
  62         if len(modifiers) == 0 and key is not None:
  63             threading.Thread(name="MSKeyAction", target=key.do_actions).start()
  64         elif 'ctrl' in modifiers and (keycode[0] == 113 or keycode[0] == '99'):
  65             for thread in threading.enumerate():
  66                 if thread.getName()[0:2] != "MS":
  67                     continue
  68                 thread.join()
  69
  70             sys.exit()
  71         return True
  72
  73     def find_by_key_code(self, key_code):
  74         if "Key_" + str(key_code[0]) in self.ids:
  75             return self.ids["Key_" + str(key_code[0])]
  76         return None
  77
  78     def not_all_keys_ready(self, dt):
  79         for key in self.children:
  80             if not type(key).__name__ == "Key":
  81                 continue
  82             if not key.is_key_ready:
  83                 return True
  84         self.ready_color = [0, 1, 0, 1]
  85         return False
  86
  87     def stop_all_running(self):
  88         running = self.running
  89         self.running = []
  90         for (key, start_time) in running:
  91             key.interrupt_action()
  92
  93     def start_running(self, key, start_time):
  94         self.running.append((key, start_time))
  95
  96     def keep_running(self, key, start_time):
  97         return (key, start_time) in self.running
  98
  99     def finished_running(self, key, start_time):
 100         if (key, start_time) in self.running:
 101             self.running.remove((key, start_time))
 102
 103     def parse_config(self):
 104         stream = open(Config.yml_file, "r")
 105         try:
 106             config = yaml.load(stream)
 107         except Exception as e:
 108             error_print("Error while loading config file: {}".format(e))
 109             sys.exit()
 110         stream.close()
 111
 112         aliases = config['aliases']
 113         seen_files = {}
 114
 115         key_properties = {}
 116
 117         for key in config['key_properties']:
 118             if key not in key_properties:
 119                 key_prop = config['key_properties'][key]
 120                 if 'include' in key_prop:
 121                     included = key_prop['include']
 122                     del(key_prop['include'])
 123
 124                     if isinstance(included, str):
 125                         key_prop.update(aliases[included], **key_prop)
 126                     else:
 127                         for included_ in included:
 128                             key_prop.update(aliases[included_], **key_prop)
 129
 130                 key_properties[key] = {
 131                     "actions":    [],
 132                     "properties": key_prop,
 133                     "files":      []
 134                 }
 135
 136         for mapped_key in config['keys']:
 137             if mapped_key not in key_properties:
 138                 key_properties[mapped_key] = {
 139                     "actions":    [],
 140                     "properties": {},
 141                     "files":      []
 142                 }
 143             for action in config['keys'][mapped_key]:
 144                 action_name = list(action)[0]
 145                 action_args = {}
 146                 if action[action_name] is None:
 147                     action[action_name] = []
 148
 149                 if 'include' in action[action_name]:
 150                     included = action[action_name]['include']
 151                     del(action[action_name]['include'])
 152
 153                     if isinstance(included, str):
 154                         action[action_name].update(
 155                                 aliases[included],
 156                                 **action[action_name])
 157                     else:
 158                         for included_ in included:
 159                             action[action_name].update(
 160                                     aliases[included_],
 161                                     **action[action_name])
 162
 163                 for argument in action[action_name]:
 164                     if argument == 'file':
 165                         filename = action[action_name]['file']
 166                         if filename not in seen_files:
 167                             if filename in config['music_properties']:
 168                                 seen_files[filename] = MusicFile(
 169                                         filename,
 170                                         self,
 171                                         **config['music_properties'][filename])
 172                             else:
 173                                 seen_files[filename] = MusicFile(
 174                                         self,
 175                                         filename)
 176
 177                         if filename not in key_properties[mapped_key]['files']:
 178                             key_properties[mapped_key]['files'] \
 179                                     .append(seen_files[filename])
 180
 181                         action_args['music'] = seen_files[filename]
 182
 183                     else:
 184                         action_args[argument] = action[action_name][argument]
 185
 186                 key_properties[mapped_key]['actions'] \
 187                         .append([action_name, action_args])
 188
 189         return (key_properties, seen_files)
 190
 191