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Mini Shell
Mini Shell
#!/usr/bin/env python3
# License: GPL v3 Copyright: 2020, Kovid Goyal <kovid at kovidgoyal.net>
from contextlib import suppress
from qt.core import (
QAbstractItemView, QAbstractTableModel, QByteArray, QFontMetrics, QFormLayout,
QItemSelectionModel, QSlider, QSortFilterProxyModel, Qt, QTableView, QWidget
)
from calibre.gui2.preferences.look_feel import BusyCursor
class VoicesModel(QAbstractTableModel):
system_default_voice = ''
def __init__(self, voice_data, parent=None):
super().__init__(parent)
self.voice_data = voice_data
gmap = {'VoiceGenderNeuter': _('neutral'), 'VoiceGenderFemale': _('female'), 'VoiceGenderMale': _('male')}
def gender(x):
return gmap.get(x, x)
def language(x):
return x.get('language_display_name') or x['locale_id'] or ''
self.current_voices = tuple((x['name'], language(x), x['age'], gender(x['gender'])) for x in voice_data.values())
self.voice_ids = tuple(voice_data)
self.column_headers = _('Name'), _('Language'), _('Age'), _('Gender')
def rowCount(self, parent=None):
return len(self.current_voices) + 1
def columnCount(self, parent=None):
return len(self.column_headers)
def headerData(self, section, orientation, role=Qt.ItemDataRole.DisplayRole):
if role == Qt.ItemDataRole.DisplayRole and orientation == Qt.Orientation.Horizontal:
return self.column_headers[section]
return super().headerData(section, orientation, role)
def data(self, index, role=Qt.ItemDataRole.DisplayRole):
if role == Qt.ItemDataRole.DisplayRole:
row = index.row()
with suppress(IndexError):
if row == 0:
return (_('System default'), '', '', '')[index.column()]
data = self.current_voices[row - 1]
col = index.column()
ans = data[col] or ''
return ans
if role == Qt.ItemDataRole.UserRole:
row = index.row()
with suppress(IndexError):
if row == 0:
return self.system_default_voice
return self.voice_ids[row - 1]
def index_for_voice(self, v):
r = 0
if v != self.system_default_voice:
try:
idx = self.voice_ids.index(v)
except Exception:
return
r = idx + 1
return self.index(r, 0)
class Widget(QWidget):
def __init__(self, tts_client, initial_backend_settings=None, parent=None):
QWidget.__init__(self, parent)
self.l = l = QFormLayout(self)
self.tts_client = tts_client
with BusyCursor():
self.voice_data = self.tts_client.get_voice_data()
self.default_system_rate = self.tts_client.default_system_rate
self.speed = s = QSlider(Qt.Orientation.Horizontal, self)
s.setMinimumWidth(200)
l.addRow(_('&Speed of speech (words per minute):'), s)
s.setRange(self.tts_client.min_rate, self.tts_client.max_rate)
s.setTickPosition(QSlider.TickPosition.TicksAbove)
s.setTickInterval((s.maximum() - s.minimum()) // 2)
s.setSingleStep(10)
self.voices = v = QTableView(self)
self.voices_model = VoicesModel(self.voice_data, parent=v)
self.proxy_model = p = QSortFilterProxyModel(self)
p.setFilterCaseSensitivity(Qt.CaseSensitivity.CaseInsensitive)
p.setSourceModel(self.voices_model)
v.setModel(p)
v.setSelectionBehavior(QAbstractItemView.SelectionBehavior.SelectRows)
v.setSortingEnabled(True)
v.horizontalHeader().resizeSection(0, QFontMetrics(self.font()).averageCharWidth() * 20)
v.horizontalHeader().resizeSection(1, QFontMetrics(self.font()).averageCharWidth() * 30)
v.verticalHeader().close()
v.setSelectionMode(QAbstractItemView.SelectionMode.SingleSelection)
v.sortByColumn(0, Qt.SortOrder.AscendingOrder)
l.addRow(v)
self.backend_settings = initial_backend_settings or {}
def restore_state(self, prefs):
data = prefs.get(f'{self.tts_client.name}-voice-table-state')
if data is not None:
self.voices.horizontalHeader().restoreState(QByteArray(data))
def save_state(self, prefs):
data = bytearray(self.voices.horizontalHeader().saveState())
prefs.set(f'{self.tts_client.name}-voice-table-state', data)
def restore_to_defaults(self):
self.backend_settings = {}
def sizeHint(self):
ans = super().sizeHint()
ans.setHeight(max(ans.height(), 600))
ans.setWidth(max(ans.width(), 500))
return ans
@property
def selected_voice(self):
for x in self.voices.selectedIndexes():
return x.data(Qt.ItemDataRole.UserRole)
@selected_voice.setter
def selected_voice(self, val):
val = val or VoicesModel.system_default_voice
idx = self.voices_model.index_for_voice(val)
if idx is not None:
idx = self.proxy_model.mapFromSource(idx)
self.voices.selectionModel().select(idx, QItemSelectionModel.SelectionFlag.ClearAndSelect | QItemSelectionModel.SelectionFlag.Rows)
self.voices.scrollTo(idx)
@property
def rate(self):
return self.speed.value()
@rate.setter
def rate(self, val):
val = int(val or self.default_system_rate)
self.speed.setValue(val)
@property
def backend_settings(self):
ans = {}
voice = self.selected_voice
if voice and voice != VoicesModel.system_default_voice:
ans['voice'] = voice
rate = self.rate
if rate and rate != self.default_system_rate:
ans['rate'] = rate
return ans
@backend_settings.setter
def backend_settings(self, val):
voice = val.get('voice') or VoicesModel.system_default_voice
self.selected_voice = voice
self.rate = val.get('rate') or self.default_system_rate
def develop():
from calibre.gui2 import Application
from calibre.gui2.tts.implementation import Client
app = Application([])
c = Client()
w = Widget(c, {})
w.show()
app.exec()
print(w.backend_settings)
if __name__ == '__main__':
develop()
Zerion Mini Shell 1.0