aboutsummaryrefslogtreecommitdiff
path: root/helpers/mapping.py
blob: bb20e679b1e4a9eb8312e0404a913411b178e93c (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
from kivy.uix.relativelayout import RelativeLayout
from kivy.properties import NumericProperty, ListProperty, StringProperty
from kivy.core.window import Window
from kivy.clock import Clock

import threading
import yaml
import sys
from collections import defaultdict

from transitions.extensions import HierarchicalMachine as Machine

from .music_file import MusicFile
from .mixer import Mixer
from . import Config, gain, error_print, warn_print
from .action import Action

class Mapping(RelativeLayout):
    STATES = [
        'initial',
        'configuring',
        'configured',
        'loading',
        'loaded',
        'failed'
    ]

    TRANSITIONS = [
        {
            'trigger': 'configure',
            'source': 'initial',
            'dest': 'configuring'
        },
        {
            'trigger': 'fail',
            'source': 'configuring',
            'dest': 'failed'
        },
        {
            'trigger': 'success',
            'source': 'configuring',
            'dest': 'configured',
            'after': 'load'
        },
        {
            'trigger': 'load',
            'source': 'configured',
            'dest': 'loading'
        },
        {
            'trigger': 'fail',
            'source': 'loading',
            'dest': 'failed'
        },
        {
            'trigger': 'success',
            'source': 'loading',
            'dest': 'loaded'
        },
        {
            'trigger': 'reload',
            'source': 'loaded',
            'dest': 'configuring'
        }
    ]

    master_volume = NumericProperty(100)
    ready_color = ListProperty([1, 165/255, 0, 1])
    state = StringProperty("")

    def __init__(self, **kwargs):
        self.keys = []
        self.running = []
        self.wait_ids = {}
        self.open_files = {}

        Machine(model=self, states=self.STATES,
                transitions=self.TRANSITIONS, initial='initial',
                ignore_invalid_triggers=True, queued=True)
        super(Mapping, self).__init__(**kwargs)
        self.keyboard = Window.request_keyboard(self.on_keyboard_closed, self)
        self.keyboard.bind(on_key_down=self.on_keyboard_down)

        self.configure()

    def on_enter_configuring(self):
        if Config.builtin_mixing:
            self.mixer = Mixer()
        else:
            self.mixer = None

        try:
            self.key_config, self.open_files = self.parse_config()
        except Exception as e:
            error_print("Error while loading configuration: {}".format(e),
                    with_trace=True)
            sys.exit()
        else:
            self.success()

    def on_enter_loading(self):
        for key in self.keys:
            key.reload()
        self.success()

    # Kivy events
    def add_widget(self, widget, index=0):
        if type(widget).__name__ == "Key" and widget not in self.keys:
            self.keys.append(widget)
        return super(Mapping, self).add_widget(widget, index)

    def remove_widget(self, widget, index=0):
        if type(widget).__name__ == "Key" and widget in self.keys:
            self.keys.remove(widget)
        return super(Mapping, self).remove_widget(widget, index)

    def on_keyboard_closed(self):
        self.keyboard.unbind(on_key_down=self.on_keyboard_down)
        self.keyboard = None

    def on_keyboard_down(self, keyboard, keycode, text, modifiers):
        key = self.find_by_key_code(keycode)
        if self.allowed_modifiers(modifiers) and key is not None:
            modifiers.sort()
            threading.Thread(name="MSKeyAction", target=key.run,
                    args=['-'.join(modifiers)]).start()
        elif 'ctrl' in modifiers and (keycode[0] == 113 or keycode[0] == '99'):
            self.stop_all_running()
            for thread in threading.enumerate():
                if thread.getName()[0:2] != "MS":
                    continue
                thread.join()

            sys.exit()
        elif 'ctrl' in modifiers and keycode[0] == 114:
            threading.Thread(name="MSReload", target=self.reload).start()
        return True

    # Helpers
    def allowed_modifiers(self, modifiers):
        allowed = []
        return len([a for a in modifiers if a not in allowed]) == 0

    def find_by_key_code(self, key_code):
        if "Key_" + str(key_code[0]) in self.ids:
            return self.ids["Key_" + str(key_code[0])]
        return None

    def all_keys_ready(self):
        partial = False
        for key in self.keys:
            if not key.is_loaded_or_failed():
                return "not_ready"
            partial = partial or key.is_failed()

        if partial:
            return "partial"
        else:
            return "success"

    # Callbacks
    def key_loaded_callback(self):
        result = self.all_keys_ready()
        if result == "success":
            self.ready_color = [0, 1, 0, 1]
        elif result == "partial":
            self.ready_color = [1, 0, 0, 1]
        else:
            self.ready_color = [1, 165/255, 0, 1]

    ## Some global actions
    def stop_all_running(self, except_key=None, key_start_time=0):
        running = self.running
        self.running = [r for r in running\
                if r[0] == except_key and r[1] == key_start_time]
        for (key, start_time) in running:
            if (key, start_time) != (except_key, key_start_time):
                key.interrupt()

    # Master volume methods
    @property
    def master_gain(self):
        return gain(self.master_volume)

    def set_master_volume(self, value, delta=False, fade=0):
        [db_gain, self.master_volume] = gain(
                value + int(delta) * self.master_volume,
                self.master_volume)

        for music in self.open_files.values():
            music.set_gain_with_effect(db_gain, fade=fade)

    # Wait handler methods
    def add_wait_id(self, wait_id, action_or_wait):
        self.wait_ids[wait_id] = action_or_wait

    def interrupt_wait(self, wait_id):
        if wait_id in self.wait_ids:
            action_or_wait = self.wait_ids[wait_id]
            del(self.wait_ids[wait_id])
            if isinstance(action_or_wait, Action):
                action_or_wait.interrupt()
            else:
                action_or_wait.set()

    # Methods to control running keys
    def start_running(self, key, start_time):
        self.running.append((key, start_time))

    def keep_running(self, key, start_time):
        return (key, start_time) in self.running

    def finished_running(self, key, start_time):
        if (key, start_time) in self.running:
            self.running.remove((key, start_time))

    # YML config parser
    def parse_config(self):
        def update_alias(prop_hash, aliases, key):
            if isinstance(aliases[key], dict):
                prop_hash.update(aliases[key], **prop_hash)
            else:
                warn_print("Alias {} is not a hash, ignored".format(key))

        def include_aliases(prop_hash, aliases):
            if 'include' not in prop_hash:
                return

            included = prop_hash['include']
            del(prop_hash['include'])
            if isinstance(included, str):
                update_alias(prop_hash, aliases, included)
            elif isinstance(included, list):
                for included_ in included:
                    if isinstance(included_, str):
                        update_alias(prop_hash, aliases, included_)
                    else:
                        warn_print("Unkown alias include type, ignored: "
                            "{} in {}".format(included_, included))
            else:
                warn_print("Unkown alias include type, ignored: {}"
                        .format(included))

        def check_key_property(key_property, key):
            if 'description' in key_property:
                desc = key_property['description']
                if not isinstance(desc, list):
                    warn_print("description in key_property '{}' is not "
                            "a list, ignored".format(key))
                    del(key_property['description'])
            if 'color' in key_property:
                color = key_property['color']
                if not isinstance(color, list)\
                        or len(color) != 3\
                        or not all(isinstance(item, int) for item in color)\
                        or any(item < 0 or item > 255 for item in color):
                    warn_print("color in key_property '{}' is not "
                            "a list of 3 valid integers, ignored".format(key))
                    del(key_property['color'])

        def check_key_properties(config):
            if 'key_properties' in config:
                if isinstance(config['key_properties'], dict):
                    return config['key_properties']
                else:
                    warn_print("key_properties config is not a hash, ignored")
                    return {}
            else:
                return {}

        def check_mapped_keys(config):
            if 'keys' in config:
                if isinstance(config['keys'], dict):
                    return config['keys']
                else:
                    warn_print("keys config is not a hash, ignored")
                    return {}
            else:
                return {}

        def check_mapped_key(mapped_keys, key):
            if not isinstance(mapped_keys[key], list):
                warn_print("key config '{}' is not an array, ignored"
                        .format(key))
                return []
            else:
                return mapped_keys[key]

        def check_music_property(music_property, filename):
            if not isinstance(music_property, dict):
                warn_print("music_property config '{}' is not a hash, ignored"
                        .format(filename))
                return {}
            if 'name' in music_property:
                music_property['name'] = str(music_property['name'])
            if 'gain' in music_property:
                try:
                    music_property['gain'] = float(music_property['gain'])
                except ValueError as e:
                    del(music_property['gain'])
                    warn_print("gain for music_property '{}' is not "
                            "a float, ignored".format(filename))
            return music_property

        stream = open(Config.yml_file, "r")
        try:
            config = yaml.safe_load(stream)
        except Exception as e:
            error_print("Error while loading config file: {}".format(e))
            sys.exit()
        stream.close()

        if not isinstance(config, dict):
            raise Exception("Top level config is supposed to be a hash")

        if 'aliases' in config and isinstance(config['aliases'], dict):
            aliases = config['aliases']
        else:
            aliases = defaultdict(dict)
            if 'aliases' in config:
                warn_print("aliases config is not a hash, ignored")

        music_properties = defaultdict(dict)
        if 'music_properties' in config and\
                isinstance(config['music_properties'], dict):
            music_properties.update(config['music_properties'])
        elif 'music_properties' in config:
            warn_print("music_properties config is not a hash, ignored")

        seen_files = {}

        key_properties = defaultdict(lambda: {
                "actions":    [],
                "properties": {},
                "files":      []
            })

        for key in check_key_properties(config):
            key_prop = config['key_properties'][key]

            if not isinstance(key_prop, dict):
                warn_print("key_property '{}' is not a hash, ignored"
                        .format(key))
                continue

            include_aliases(key_prop, aliases)
            check_key_property(key_prop, key)

            key_properties[key]["properties"] = key_prop

        for mapped_key in check_mapped_keys(config):
            for index, action in enumerate(check_mapped_key(
                    config['keys'], mapped_key)):
                if not isinstance(action, dict) or\
                        not len(action) == 1 or\
                        not isinstance(list(action.values())[0] or {}, dict):
                    warn_print("action number {} of key '{}' is invalid, "
                            "ignored".format(index + 1, mapped_key))
                    continue

                action_name = list(action)[0]
                action_args = {}
                if action[action_name] is None:
                    action[action_name] = {}

                include_aliases(action[action_name], aliases)

                for argument in action[action_name]:
                    if argument == 'file':
                        filename = str(action[action_name]['file'])
                        if filename not in seen_files:
                            music_property = check_music_property(
                                    music_properties[filename],
                                    filename)

                            if filename in self.open_files:
                                self.open_files[filename]\
                                        .reload_properties(**music_property)

                                seen_files[filename] =\
                                        self.open_files[filename]
                            else:
                                seen_files[filename] = MusicFile(
                                        filename, self, **music_property)

                        if filename not in key_properties[mapped_key]['files']:
                            key_properties[mapped_key]['files'] \
                                    .append(seen_files[filename])

                        action_args['music'] = seen_files[filename]
                    else:
                        action_args[argument] = action[action_name][argument]

                key_properties[mapped_key]['actions'] \
                        .append([action_name, action_args])

        return (key_properties, seen_files)