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