Change Qpushbutton text

Sumit

Hi All,

I am struggling to change the text of the QPushbutton. I wanted to change the text when the slot is called. In my slot function, I am calling another function. The code works if I am not calling the other function from the slot but it does not work if I call the function.
The button is record_pbutton and the slot is live_speech_to_text

RATE = 10000
CHUNK = int(RATE / 10) # 100ms

class MainWindow(QMainWindow):

def __init__(self):
    super().__init__()
    self.title = " FrenchoLingo"
    self.left, self.top = 10, 10
    self.width, self.height = 640, 640
    try:
        self.ui = uic.loadUi('Frenchuolingo.ui', self)
    except FileNotFoundError as e:
        print(e)
    self.initUI()
    # self.setCentralWidget()
    # self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)

def initUI(self):
    self.setWindowTitle(self.title)
    self.setGeometry(self.left, self.top, self.width, self.height)       
    
    self.ui.record_pbutton.setIcon(QtGui.QIcon("./icons8-audio-100.png"))
    self.ui.record_pbutton.setToolTip('Live Speech to Text')
    self.ui.record_pbutton.setEnabled(False)
    self.ui.record_pbutton.setStyleSheet(
        "QPushButton{background-color: orange}")
    self.ui.record_pbutton.clicked.connect(self.live_speech_to_text)
    self.ui.rb_livespeech.setChecked(False)
    self.ui.rb_livespeech.toggled.connect(lambda: self.btnstate(self.ui.rb_livespeech)) 
 
def btnstate(self, btn):
    self.ui.record_pbutton.setEnabled(True)
    self.ui.record_pbutton.setStyleSheet(
        "QPushButton{background-color: green}")

def live_speech_to_text(self): # For Live Speech to text
    self.ui.record_pbutton.setText("Speak Now")
    self.set_microphone()

    # self.ui.record_pbutton.setStyleSheet(
    #     "QPushButton{background-color: green}")
    # self.ui.record_pbutton.setEnabled(True)

    # self.ui.livespeech_textbox.append(text)

def set_microphone(self, ):
    # See http://g.co/cloud/speech/docs/languages
    # for a list of supported languages.
    language_code = 'fr-FR'  # a BCP-47 language tag

    client = speech.SpeechClient()
    config = types.RecognitionConfig(
        encoding=enums.RecognitionConfig.AudioEncoding.LINEAR16,
        sample_rate_hertz=RATE,
        language_code=language_code)
    streaming_config = types.StreamingRecognitionConfig(
        config=config,
        interim_results=True)

    with MicrophoneStream(RATE, CHUNK) as stream:

        # format = stream._audio_interface.get_sample_size(FORMAT)
        audio_generator = stream.generator()
        requests = (types.StreamingRecognizeRequest(audio_content=content)
                    for content in audio_generator)

        responses = client.streaming_recognize(streaming_config, requests)

        self.listen_print_loop(responses)

def listen_print_loop(self, responses):
    num_chars_printed = 0
    for response in responses:
        if not response.results:
            continue
        result = response.results[0]
        if not result.alternatives:
            continue
        transcript = result.alternatives[0].transcript
        overwrite_chars = ' ' * (num_chars_printed - len(transcript))
        if not result.is_final:
            sys.stdout.write(transcript + overwrite_chars + '\r')
            sys.stdout.flush()
            num_chars_printed = len(transcript)
        else:
            self.ui.livespeech_textbox.append(transcript + overwrite_chars)
            # print(transcript + overwrite_chars)

            # Exit recognition if any of the transcribed phrases could be
            # one of our keywords.
            if re.search(r'\b(exit|quit)\b', transcript, re.I):
                print('Exiting..')
                break
            num_chars_printed = 0
            return

if "main" == name:
app = QApplication([])
myapp = MainWindow()

myapp.show()
app.exec_()

Kent-Dorfman

insert some debug output in set_microphone to see if it is hanging on a particular line in that method.

mrjj

@Sumit said in Change Qpushbutton text:

The code works if I am not calling the other function

So that means this function is blocking the event loop
by not returning control to the caller or simply takes a long time to execute.

So the buttons text is changed but its never given time to repaint.