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
|
import configparser
from dataclasses import dataclass
import logging
import os
import shutil
from pathlib import Path
from typing import Optional
from qtpy.QtCore import QTimer
from .theme import Theme
from .init_values import canvas
from .xdg import xdg_data_dirs, xdg_data_home
_logger = logging.Logger(__name__)
@dataclass
class ThemeData:
ref_id: str
name: str
editable: bool
file_path: str
class ThemeManager:
def __init__(self, theme_paths: tuple[Path, ...]) -> None:
canvas.ensure_init()
self.current_theme = None
self.current_theme_file = Path()
self.theme_paths = theme_paths
self._last_modified = 0.0
self._theme_file_timer = QTimer()
self._theme_file_timer.setInterval(400)
self._theme_file_timer.timeout.connect(self._check_theme_file_modified)
@staticmethod
def default_theme_paths(source_theme_dir: Optional[Path]=None) -> list[Path]:
''' do not use now ! While HoustonPatchbay is a submodule and not a lib
sharing the same paths for various programs create package conflicts
in distributions.'''
APP_NAME = 'HoustonPatchbay'
path_list = list[Path]()
path_list.append(xdg_data_home() / APP_NAME / 'themes')
if source_theme_dir is not None and source_theme_dir not in path_list:
path_list.append(source_theme_dir)
for p in xdg_data_dirs():
path_list.append(p / APP_NAME / 'themes')
return path_list
def _check_theme_file_modified(self):
if (not self.current_theme_file.name
or not self.current_theme_file.exists()):
self._theme_file_timer.stop()
return
try:
last_modified = os.path.getmtime(self.current_theme_file)
except:
self._theme_file_timer.stop()
return
if last_modified == self._last_modified:
return
if not self._update_theme():
self._last_modified = last_modified
def _update_theme(self) -> bool:
conf = configparser.ConfigParser()
try:
# we don't need the file_list
# it is just a convenience to mute conf.read
file_list = conf.read(self.current_theme_file)
except configparser.DuplicateOptionError as e:
_logger.error(str(e))
return False
except:
_logger.error(f"failed to open {self.current_theme_file}")
return False
theme_dict = self._convert_configparser_object_to_dict(conf)
self._last_modified = os.path.getmtime(self.current_theme_file)
del canvas._theme
canvas._theme = Theme()
canvas._theme.read_theme(theme_dict, self.current_theme_file)
canvas.scene.update_theme()
theme_ref = self.current_theme_file.parent.name
canvas.cb.theme_changed(theme_ref)
return True
@staticmethod
def _convert_configparser_object_to_dict(
conf: configparser.ConfigParser) -> dict:
def type_convert(value):
'''return an int, a float, or the unchanged given value'''
try:
value = int(value)
except:
try:
value = float(value)
except:
return value
return value
return_dict = {}
for key, value in conf.items():
if key == 'DEFAULT':
continue
assert isinstance(value, configparser.SectionProxy)
new_dict = {}
for skey, svalue in value.items():
assert isinstance(svalue, str)
if svalue.startswith('(') and svalue.endswith(')'):
new_value = svalue[1:-1].split(', ')
new_value = tuple([type_convert(v) for v in new_value])
elif svalue.startswith('[') and svalue.endswith(']'):
new_value = svalue[1:-1].split(', ')
new_value = [type_convert(v) for v in new_value]
else:
new_value = type_convert(svalue)
new_dict[skey] = new_value
return_dict[key] = new_dict
return return_dict
def get_theme(self) -> str:
return self.current_theme_file.parent.name
def set_theme(self, theme_name: str) -> bool:
self.current_theme = theme_name
for theme_path in self.theme_paths:
theme_file_path = theme_path.joinpath(theme_name, 'theme.conf')
if theme_file_path.exists():
self.current_theme_file = theme_file_path
break
else:
_logger.error(f"Unable to find theme {theme_name}")
return False
theme_is_valid = self._update_theme()
if not theme_is_valid:
return False
self.activate_watcher(os.access(self.current_theme_file, os.R_OK))
return True
def set_fallback_theme(self):
del canvas._theme
canvas._theme = Theme()
canvas.scene.update_theme()
def list_themes(self) -> list[ThemeData]:
themes_set = set[str]()
conf = configparser.ConfigParser()
theme_classes = list[ThemeData]()
lang = os.getenv('LANG', '')
lang_short = ''
if len(lang) >= 2:
lang_short = lang[:2]
for search_path in self.theme_paths:
if not search_path.exists():
continue
editable = bool(os.access(search_path, os.W_OK))
for file_path in search_path.iterdir():
if file_path.name in themes_set:
continue
full_path = search_path.joinpath(file_path, 'theme.conf')
if not full_path.is_file():
continue
try:
conf.read(str(full_path))
except configparser.DuplicateOptionError as e:
_logger.error(str(e))
continue
except:
# TODO
continue
name = file_path.name
# Search the theme name in the theme file
# It may be translated
if 'Theme' in conf.keys():
conf_theme = conf['Theme']
if 'Name' in conf_theme.keys():
name = conf_theme['Name']
name_lang_key = f'Name[{lang_short}]'
if name_lang_key in conf_theme.keys():
name = conf_theme[name_lang_key]
conf.clear()
themes_set.add(file_path.name)
theme_classes.append(
ThemeData(file_path.name, name, editable, str(full_path)))
return theme_classes
def copy_and_load_current_theme(self, new_name: str) -> int:
'''returns 0 if ok, 1 if no editable dir exists, 2 if copy fails'''
current_theme_dir = self.current_theme_file.parent
editable_dir = Path()
# find the first editable patchbay_themes directory
# creating it if it doesn't exists
for search_path in self.theme_paths:
if search_path.exists():
if not search_path.is_dir():
continue
if os.access(search_path, os.W_OK):
editable_dir = search_path
break
else:
try:
search_path.mkdir(parents=True)
except:
continue
editable_dir = search_path
break
if not editable_dir.name:
return 1
new_dir = editable_dir.joinpath(new_name)
try:
shutil.copytree(current_theme_dir, new_dir)
except:
return 2
self.current_theme_file = new_dir.joinpath('theme.conf')
conf = configparser.ConfigParser()
try:
# we don't need the file_list
# it is just a convenience to mute conf.read
file_list = conf.read(self.current_theme_file)
# rename the theme in its file with the new name
# remove all translated names to prevent them to pass over
# the new name.
if 'Theme' in conf.keys():
conf_theme = conf['Theme']
conf_theme['Name'] = new_name
for key in conf_theme.keys():
if key.lower().startswith('name[') and key.endswith(']'):
conf_theme.pop(key)
with open(self.current_theme_file, 'w') as f:
conf.write(f)
conf.clear()
except:
_logger.error(
f'Impossible to rename Theme in file {self.current_theme_file}')
self._update_theme()
return 0
def activate_watcher(self, yesno: bool):
if yesno:
self._theme_file_timer.start()
else:
self._theme_file_timer.stop()
|
