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