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