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#############################################################################
##
## Copyright (C) 2017 The Qt Company Ltd.
## Contact: http://www.qt.io/licensing/
##
## This file is part of the Qt for Python examples of the Qt Toolkit.
##
## $QT_BEGIN_LICENSE:BSD$
## You may use this file under the terms of the BSD license as follows:
##
## "Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are
## met:
##   * Redistributions of source code must retain the above copyright
##     notice, this list of conditions and the following disclaimer.
##   * Redistributions in binary form must reproduce the above copyright
##     notice, this list of conditions and the following disclaimer in
##     the documentation and/or other materials provided with the
##     distribution.
##   * Neither the name of The Qt Company Ltd nor the names of its
##     contributors may be used to endorse or promote products derived
##     from this software without specific prior written permission.
##
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
##
## $QT_END_LICENSE$
##
#############################################################################

"""PySide2 QTextToSpeech example"""

import sys
from PySide2.QtCore import Qt
from PySide2.QtWidgets import (qApp, QApplication, QComboBox, QFormLayout,
    QHBoxLayout, QLineEdit, QMainWindow, QPushButton, QSlider, QWidget)

from PySide2.QtTextToSpeech import QTextToSpeech, QVoice

class MainWindow(QMainWindow):
    def __init__(self):
        super(MainWindow, self).__init__()

        centralWidget = QWidget()
        self.setCentralWidget(centralWidget)
        layout = QFormLayout(centralWidget)

        textLayout = QHBoxLayout()
        self.text = QLineEdit('Hello, PySide2')
        self.text.setClearButtonEnabled(True)
        textLayout.addWidget(self.text)
        self.sayButton = QPushButton('Say')
        textLayout.addWidget(self.sayButton)
        self.text.returnPressed.connect(self.sayButton.animateClick)
        self.sayButton.clicked.connect(self.say)
        layout.addRow('Text:', textLayout)

        self.voiceCombo = QComboBox()
        layout.addRow('Voice:', self.voiceCombo)

        self.volumeSlider = QSlider(Qt.Horizontal)
        self.volumeSlider.setMinimum(0)
        self.volumeSlider.setMaximum(100)
        self.volumeSlider.setValue(100)
        layout.addRow('Volume:', self.volumeSlider)

        self.engine = None
        engineNames = QTextToSpeech.availableEngines()
        if len(engineNames) > 0:
            engineName = engineNames[0]
            self.engine = QTextToSpeech(engineName)
            self.engine.stateChanged.connect(self.stateChanged)
            self.setWindowTitle('QTextToSpeech Example ({})'.format(engineName))
            self.voices = []
            for voice in self.engine.availableVoices():
                self.voices.append(voice)
                self.voiceCombo.addItem(voice.name())
        else:
            self.setWindowTitle('QTextToSpeech Example (no engines available)')
            self.sayButton.setEnabled(False)

    def say(self):
        self.sayButton.setEnabled(False)
        self.engine.setVoice(self.voices[self.voiceCombo.currentIndex()])
        self.engine.setVolume(float(self.volumeSlider.value()) / 100)
        self.engine.say(self.text.text())

    def stateChanged(self, state):
        if (state == QTextToSpeech.State.Ready):
            self.sayButton.setEnabled(True)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    mainWin = MainWindow()
    mainWin.show()
    sys.exit(app.exec_())