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 from .action import Action
  15
  16 class Mapping(RelativeLayout):
  17     expected_keys = NumericProperty(0)
  18     master_volume = NumericProperty(100)
  19     ready_color = ListProperty([1, 165/255, 0, 1])
  20
  21     def __init__(self, **kwargs):
  22         if Config.builtin_mixing:
  23             self.mixer = Mixer()
  24         else:
  25             self.mixer = None
  26         self.key_config, self.open_files = self.parse_config()
  27         super(Mapping, self).__init__(**kwargs)
  28         self._keyboard = Window.request_keyboard(self._keyboard_closed, self)
  29         self._keyboard.bind(on_key_down=self._on_keyboard_down)
  30         self.running = []
  31         self.wait_ids = {}
  32         Clock.schedule_interval(self.not_all_keys_ready, 1)
  33
  34     @property
  35     def master_gain(self):
  36         return gain(self.master_volume)
  37
  38     def set_master_volume(self, value, delta=False, fade=0):
  39         [db_gain, self.master_volume] = gain(
  40                 value + int(delta) * self.master_volume,
  41                 self.master_volume)
  42
  43         for music in self.open_files.values():
  44             if not (music.is_loaded_playing() or music.is_loaded_paused()):
  45                 continue
  46
  47             if fade > 0:
  48                 music.gain_effects.append(GainEffect(
  49                     "fade",
  50                     music.current_audio_segment,
  51                     music.current_loop,
  52                     music.sound_position,
  53                     music.sound_position + fade,
  54                     gain=db_gain))
  55             else:
  56                 music.set_gain(db_gain)
  57
  58     def add_wait_id(self, wait_id, action_or_wait):
  59         self.wait_ids[wait_id] = action_or_wait
  60
  61     def interrupt_wait(self, wait_id):
  62         if wait_id in self.wait_ids:
  63             action_or_wait = self.wait_ids[wait_id]
  64             del(self.wait_ids[wait_id])
  65             if isinstance(action_or_wait, Action):
  66                 action_or_wait.interrupt()
  67             else:
  68                 action_or_wait.set()
  69
  70     def _keyboard_closed(self):
  71         self._keyboard.unbind(on_key_down=self._on_keyboard_down)
  72         self._keyboard = None
  73
  74     def _on_keyboard_down(self, keyboard, keycode, text, modifiers):
  75         key = self.find_by_key_code(keycode)
  76         if len(modifiers) == 0 and key is not None:
  77             threading.Thread(name="MSKeyAction", target=key.do_actions).start()
  78         elif 'ctrl' in modifiers and (keycode[0] == 113 or keycode[0] == '99'):
  79             for thread in threading.enumerate():
  80                 if thread.getName()[0:2] != "MS":
  81                     continue
  82                 thread.join()
  83
  84             sys.exit()
  85         return True
  86
  87     def find_by_key_code(self, key_code):
  88         if "Key_" + str(key_code[0]) in self.ids:
  89             return self.ids["Key_" + str(key_code[0])]
  90         return None
  91
  92     def not_all_keys_ready(self, dt):
  93         for key in self.children:
  94             if not type(key).__name__ == "Key":
  95                 continue
  96             if not key.is_key_ready:
  97                 return True
  98         self.ready_color = [0, 1, 0, 1]
  99         return False
 100
 101     def stop_all_running(self):
 102         running = self.running
 103         self.running = []
 104         for (key, start_time) in running:
 105             key.interrupt_action()
 106
 107     def start_running(self, key, start_time):
 108         self.running.append((key, start_time))
 109
 110     def keep_running(self, key, start_time):
 111         return (key, start_time) in self.running
 112
 113     def finished_running(self, key, start_time):
 114         if (key, start_time) in self.running:
 115             self.running.remove((key, start_time))
 116
 117     def parse_config(self):
 118         stream = open(Config.yml_file, "r")
 119         try:
 120             config = yaml.load(stream)
 121         except Exception as e:
 122             error_print("Error while loading config file: {}".format(e))
 123             sys.exit()
 124         stream.close()
 125
 126         aliases = config['aliases']
 127         seen_files = {}
 128
 129         key_properties = {}
 130
 131         for key in config['key_properties']:
 132             if key not in key_properties:
 133                 key_prop = config['key_properties'][key]
 134                 if 'include' in key_prop:
 135                     included = key_prop['include']
 136                     del(key_prop['include'])
 137
 138                     if isinstance(included, str):
 139                         key_prop.update(aliases[included], **key_prop)
 140                     else:
 141                         for included_ in included:
 142                             key_prop.update(aliases[included_], **key_prop)
 143
 144                 key_properties[key] = {
 145                     "actions":    [],
 146                     "properties": key_prop,
 147                     "files":      []
 148                 }
 149
 150         for mapped_key in config['keys']:
 151             if mapped_key not in key_properties:
 152                 key_properties[mapped_key] = {
 153                     "actions":    [],
 154                     "properties": {},
 155                     "files":      []
 156                 }
 157             for action in config['keys'][mapped_key]:
 158                 action_name = list(action)[0]
 159                 action_args = {}
 160                 if action[action_name] is None:
 161                     action[action_name] = []
 162
 163                 if 'include' in action[action_name]:
 164                     included = action[action_name]['include']
 165                     del(action[action_name]['include'])
 166
 167                     if isinstance(included, str):
 168                         action[action_name].update(
 169                                 aliases[included],
 170                                 **action[action_name])
 171                     else:
 172                         for included_ in included:
 173                             action[action_name].update(
 174                                     aliases[included_],
 175                                     **action[action_name])
 176
 177                 for argument in action[action_name]:
 178                     if argument == 'file':
 179                         filename = action[action_name]['file']
 180                         if filename not in seen_files:
 181                             if filename in config['music_properties']:
 182                                 seen_files[filename] = MusicFile(
 183                                         filename,
 184                                         self,
 185                                         **config['music_properties'][filename])
 186                             else:
 187                                 seen_files[filename] = MusicFile(
 188                                         self,
 189                                         filename)
 190
 191                         if filename not in key_properties[mapped_key]['files']:
 192                             key_properties[mapped_key]['files'] \
 193                                     .append(seen_files[filename])
 194
 195                         action_args['music'] = seen_files[filename]
 196
 197                     else:
 198                         action_args[argument] = action[action_name][argument]
 199
 200                 key_properties[mapped_key]['actions'] \
 201                         .append([action_name, action_args])
 202
 203         return (key_properties, seen_files)
 204
 205