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# Copyright (C) 2023 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
from PySide6.QtCore import QLocale, QSignalBlocker, Slot
from PySide6.QtWidgets import QMainWindow
from PySide6.QtTextToSpeech import QTextToSpeech, QVoice
from ui_mainwindow import Ui_MainWindow
class MainWindow(QMainWindow):
def __init__(self, parent=None):
super().__init__(parent)
self._speech = None
self._voices = []
self._ui = Ui_MainWindow()
self._ui.setupUi(self)
# Populate engine selection list
self._ui.engine.addItem("Default", "default")
engines = QTextToSpeech.availableEngines()
for engine in engines:
self._ui.engine.addItem(engine, engine)
self._ui.engine.setCurrentIndex(0)
self.engine_selected(0)
self._ui.pitch.valueChanged.connect(self.set_pitch)
self._ui.rate.valueChanged.connect(self.set_rate)
self._ui.volume.valueChanged.connect(self.set_volume)
self._ui.engine.currentIndexChanged.connect(self.engine_selected)
self._ui.voice.currentIndexChanged.connect(self.voice_selected)
self._ui.language.currentIndexChanged.connect(self.language_selected)
@Slot(int)
def set_rate(self, rate):
self._speech.setRate(rate / 10.0)
@Slot(int)
def set_pitch(self, pitch):
self._speech.setPitch(pitch / 10.0)
@Slot(int)
def set_volume(self, volume):
self._speech.setVolume(volume / 100.0)
@Slot(QTextToSpeech.State)
def state_changed(self, state):
if state == QTextToSpeech.Speaking:
self._ui.statusbar.showMessage("Speech started...")
elif state == QTextToSpeech.Ready:
self._ui.statusbar.showMessage("Speech stopped...", 2000)
elif state == QTextToSpeech.Paused:
self._ui.statusbar.showMessage("Speech paused...")
else:
self._ui.statusbar.showMessage("Speech error!")
self._ui.pauseButton.setEnabled(state == QTextToSpeech.Speaking)
self._ui.resumeButton.setEnabled(state == QTextToSpeech.Paused)
can_stop = state == QTextToSpeech.Speaking or state == QTextToSpeech.Paused
self._ui.stopButton.setEnabled(can_stop)
@Slot(int)
def engine_selected(self, index):
engine_name = self._ui.engine.itemData(index)
self._speech = None
self._speech = (QTextToSpeech(self) if engine_name == "default"
else QTextToSpeech(engine_name, self))
# Block signals of the languages combobox while populating
current = self._speech.locale()
with QSignalBlocker(self._ui.language):
self._ui.language.clear()
# Populate the languages combobox before connecting its signal.
locales = self._speech.availableLocales()
for locale in locales:
lang = QLocale.languageToString(locale.language())
territory = QLocale.territoryToString(locale.territory())
self._ui.language.addItem(f"{lang} ({territory})", locale)
if locale.name() == current.name():
current = locale
self.set_rate(self._ui.rate.value())
self.set_pitch(self._ui.pitch.value())
self.set_volume(self._ui.volume.value())
self._ui.speakButton.clicked.connect(self.speak_text)
self._ui.stopButton.clicked.connect(self.stop_speaking)
self._ui.pauseButton.clicked.connect(self.pause_speaking)
self._ui.resumeButton.clicked.connect(self._speech.resume)
self._speech.stateChanged.connect(self.state_changed)
self._speech.localeChanged.connect(self.locale_changed)
self.locale_changed(current)
@Slot()
def speak_text(self):
self._speech.say(self._ui.plainTextEdit.toPlainText())
@Slot()
def stop_speaking(self):
self._speech.stop()
@Slot()
def pause_speaking(self):
self._speech.pause()
@Slot(int)
def language_selected(self, language):
locale = self._ui.language.itemData(language)
self._speech.setLocale(locale)
@Slot(int)
def voice_selected(self, index):
self._speech.setVoice(self._voices[index])
@Slot(QLocale)
def locale_changed(self, locale):
self._ui.language.setCurrentIndex(self._ui.language.findData(locale))
with QSignalBlocker(self._ui.voice):
self._ui.voice.clear()
self._voices = self._speech.availableVoices()
current_voice = self._speech.voice()
for voice in self._voices:
name = voice.name()
gender = QVoice.genderName(voice.gender())
age = QVoice.ageName(voice.age())
self._ui.voice.addItem(f"{name} - {gender} - {age}")
if voice.name() == current_voice.name():
self._ui.voice.setCurrentIndex(self._ui.voice.count() - 1)
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