Python QtCore.QEventLoop類代碼示例

class MatrixDialog(WindowModalDialog):

    def __init__(self, parent):
        super(MatrixDialog, self).__init__(parent)
        self.setWindowTitle(_("Trezor Matrix Recovery"))
        self.num = 9
        self.loop = QEventLoop()

        vbox = QVBoxLayout(self)
        vbox.addWidget(WWLabel(MATRIX_RECOVERY))

        grid = QGridLayout()
        grid.setSpacing(0)
        self.char_buttons = []
        for y in range(3):
            for x in range(3):
                button = QPushButton('?')
                button.clicked.connect(partial(self.process_key, ord('1') + y * 3 + x))
                grid.addWidget(button, 3 - y, x)
                self.char_buttons.append(button)
        vbox.addLayout(grid)

        self.backspace_button = QPushButton("<=")
        self.backspace_button.clicked.connect(partial(self.process_key, Qt.Key_Backspace))
        self.cancel_button = QPushButton(_("Cancel"))
        self.cancel_button.clicked.connect(partial(self.process_key, Qt.Key_Escape))
        buttons = Buttons(self.backspace_button, self.cancel_button)
        vbox.addSpacing(40)
        vbox.addLayout(buttons)
        self.refresh()
        self.show()

    def refresh(self):
        for y in range(3):
            self.char_buttons[3 * y + 1].setEnabled(self.num == 9)

    def is_valid(self, key):
        return key >= ord('1') and key <= ord('9')

    def process_key(self, key):
        self.data = None
        if key == Qt.Key_Backspace:
            self.data = '\010'
        elif key == Qt.Key_Escape:
            self.data = 'x'
        elif self.is_valid(key):
            self.char_buttons[key - ord('1')].setFocus()
            self.data = '%c' % key
        if self.data:
            self.loop.exit(0)

    def keyPressEvent(self, event):
        self.process_key(event.key())
        if not self.data:
            QDialog.keyPressEvent(self, event)

    def get_matrix(self, num):
        self.num = num
        self.refresh()
        self.loop.exec_()

def _processPendingEvents():
    """Process pending application events."""

    # Create an event loop to run in. Otherwise, we need to use the
    # QApplication main loop, which may already be running and therefore
    # unusable.
    qe = QEventLoop()

    # Create a single-shot timer. Could use QTimer.singleShot(),
    # but can't cancel this / disconnect it.
    timer = QTimer()
    timer.setSingleShot(True)
    timer.timeout.connect(qe.quit)
    timer.start(1)

    # Wait for an emitted signal.
    qe.exec_()

    # Clean up: don't allow the timer to call qe.quit after this
    # function exits, which would produce "interesting" behavior.
    timer.stop()
    # Stopping the timer may not cancel timeout signals in the
    # event queue. Disconnect the signal to be sure that loop
    # will never receive a timeout after the function exits.
    timer.timeout.disconnect(qe.quit)

def waitForSignal(signal, message="", timeout=0):
    """Waits (max timeout msecs if given) for a signal to be emitted.

    It the waiting lasts more than 2 seconds, a progress dialog is displayed
    with the message.

    Returns True if the signal was emitted.
    Return False if the wait timed out or the dialog was canceled by the user.

    """
    loop = QEventLoop()
    dlg = QProgressDialog(minimum=0, maximum=0, labelText=message)
    dlg.setWindowTitle(appinfo.appname)
    dlg.setWindowModality(Qt.ApplicationModal)
    QTimer.singleShot(2000, dlg.show)
    dlg.canceled.connect(loop.quit)
    if timeout:
        QTimer.singleShot(timeout, dlg.cancel)
    stop = lambda: loop.quit()
    signal.connect(stop)
    loop.exec_()
    signal.disconnect(stop)
    dlg.hide()
    dlg.deleteLater()
    return not dlg.wasCanceled()

class AppDecorator(QObject):
    documentWasCreatedSignal = pyqtSignal(object)  # doc
    documentWindowWasCreatedSignal = pyqtSignal(object, object)  # doc, window
    def __init__(self,argv):
        self.qApp = QApplication(argv)
        super(AppDecorator, self).__init__()
        from cadnano.gui.views.preferences import Preferences
        self.prefs = Preferences()
        #icon = QIcon(ICON_PATH)
        #self.qApp.setWindowIcon(icon)


        self.document_controllers = set()  # Open documents
        self.active_document = None
        self.vh = {}  # Newly created VirtualHelix register here by idnum.
        self.vhi = {}
        self.partItem = None

        global decode
        global Document
        global DocumentController
        from cadnano.gui.views.pathview import pathstyles as styles
        styles.setFontMetrics()

    # def prefsClicked(self):
    #     self.prefs.showDialog()

    def exec_(self):
        if hasattr(self, 'qApp'):
            mainWindow = MainWindow()
            mainWindow.show()
            self.mainEventLoop = QEventLoop()
            self.mainEventLoop.exec_()

 def send(params):
     url = self.formatUrl(endpoint, params)
     request = QNetworkRequest(url)
     headers['User-Agent'] = 'Divi QGIS Plugin/%s' % PLUGIN_VERSION
     QgsMessageLog.logMessage(str(headers), 'DIVI')
     for key, value in headers.items():
         request.setRawHeader(key.encode('utf-8'), value.encode('utf-8'))
     if method == 'delete':
         reply = manager.sendCustomRequest(request, 'DELETE'.encode('utf-8'), data)
     else:
         if not data:
             reply = getattr(manager, method)(request)
         elif isinstance(data, QHttpMultiPart) == True:
             reply = getattr(manager, method)(request, data)
         elif isinstance(data, str) == True:
             reply = getattr(manager, method)(request, data.encode('utf-8'))
     loop = QEventLoop()
     reply.uploadProgress.connect(self.uploadProgress)
     reply.downloadProgress.connect(self.downloadProgress)
     reply.metaDataChanged.connect(self.metaDataChanged)
     #reply.error.connect(self._error)
     reply.finished.connect(loop.exit)
     self.abort_sig.connect( reply.abort )
     loop.exec_()
     self.abort_sig.disconnect( reply.abort )
     return reply

 def f2():
     future = ac.start(em2.g, lambda x: x, QThread.currentThread())
     # The doneSignal won't be processed without an event loop. A
     # thread pool doesn't create one, so make our own to run ``g``.
     qe = QEventLoop()
     future._signalInvoker.doneSignal.connect(qe.exit)
     qe.exec_()

    def send_request(self, post=None, data={}):
        loop = QEventLoop()
        self.r.setUrl(self.url)
        if post:
            encoded_data = self._urlencode_post_data(data)
            pprint(encoded_data)
            self.reply_post = self.conn.post(self.r, encoded_data)
            self.reply_post.downloadProgress.connect(self.prepare_responce)

        else:
            self.reply = self.conn.get(self.r)
            self.reply.finished.connect(self.prepare_responce)
        # return \
        loop.exec()

    def __init__(self, parent):
        super(MatrixDialog, self).__init__(parent)
        self.setWindowTitle(_("Trezor Matrix Recovery"))
        self.num = 9
        self.loop = QEventLoop()

        vbox = QVBoxLayout(self)
        vbox.addWidget(WWLabel(MATRIX_RECOVERY))

        grid = QGridLayout()
        grid.setSpacing(0)
        self.char_buttons = []
        for y in range(3):
            for x in range(3):
                button = QPushButton('?')
                button.clicked.connect(partial(self.process_key, ord('1') + y * 3 + x))
                grid.addWidget(button, 3 - y, x)
                self.char_buttons.append(button)
        vbox.addLayout(grid)

        self.backspace_button = QPushButton("<=")
        self.backspace_button.clicked.connect(partial(self.process_key, Qt.Key_Backspace))
        self.cancel_button = QPushButton(_("Cancel"))
        self.cancel_button.clicked.connect(partial(self.process_key, Qt.Key_Escape))
        buttons = Buttons(self.backspace_button, self.cancel_button)
        vbox.addSpacing(40)
        vbox.addLayout(buttons)
        self.refresh()
        self.show()

 def run(self, installSignalHandlers=True):
     if self._ownApp:
         self._blockApp = self.qApp
     else:
         self._blockApp = QEventLoop()
     self.runReturn()
     self._blockApp.exec_()

 def exec_(self):
     if hasattr(self, 'qApp'):
         from initialization.ui_loader import UiLoader
         loader = UiLoader()
         loader.mainWindow.show()
         self.mainEventLoop = QEventLoop()
         self.mainEventLoop.exec_()

 def waitForCallback(self):
     assert self._state == CallbackFutureState.WAITING, 'Only callbacks being waited for may be skipped.'
     # Run events until the callback is invoked.
     self._qEventLoop = QEventLoop()
     self._qEventLoop.exec_()
     self._qEventLoop = None
     assert self._state == CallbackFutureState.COMPLETE

    def __init__(self, parent):
        super(CharacterDialog, self).__init__(parent)
        self.setWindowTitle(_("KeepKey Seed Recovery"))
        self.character_pos = 0
        self.word_pos = 0
        self.loop = QEventLoop()
        self.word_help = QLabel()
        self.char_buttons = []

        vbox = QVBoxLayout(self)
        vbox.addWidget(WWLabel(CHARACTER_RECOVERY))
        hbox = QHBoxLayout()
        hbox.addWidget(self.word_help)
        for i in range(4):
            char_button = CharacterButton('*')
            char_button.setMaximumWidth(36)
            self.char_buttons.append(char_button)
            hbox.addWidget(char_button)
        self.accept_button = CharacterButton(_("Accept Word"))
        self.accept_button.clicked.connect(partial(self.process_key, 32))
        self.rejected.connect(partial(self.loop.exit, 1))
        hbox.addWidget(self.accept_button)
        hbox.addStretch(1)
        vbox.addLayout(hbox)

        self.finished_button = QPushButton(_("Seed Entered"))
        self.cancel_button = QPushButton(_("Cancel"))
        self.finished_button.clicked.connect(partial(self.process_key,
                                                     Qt.Key_Return))
        self.cancel_button.clicked.connect(self.rejected)
        buttons = Buttons(self.finished_button, self.cancel_button)
        vbox.addSpacing(40)
        vbox.addLayout(buttons)
        self.refresh()
        self.show()

 def __init__(self, file_info, parent=None):
     super(Ace, self).__init__(parent)
     self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
     self.parent = parent
     self.file_info = file_info
     self.language = EditorHelper.lang_from_file_info(file_info)
     self.waitForReady = False
     self.loop = QEventLoop()
     
     settings = self.settings()
     settings.setAttribute(QWebSettings.JavascriptCanAccessClipboard, True)
     settings.setAttribute(QWebSettings.DeveloperExtrasEnabled, True)
     self.inspector = QWebInspector(self)
     showInspectorAction = QAction('showInspector', self)
     showInspectorAction.triggered.connect(self.showInspector)
     self.addAction(showInspectorAction)
     
     self.modificationChanged.connect(self.modification_changed)
     self.main_frame().javaScriptWindowObjectCleared.connect(self.__self_js)
     pckg, file_name = 'ace_editor', 'ace_editor.html'
     resource = pkg_resources.resource_string(pckg, file_name)
     html_template = str(resource, 'utf-8')
     #insert file content
     with open(self.file_info.absoluteFilePath(), 'r') as f:
         text = f.read()
         text = html.escape(text)
         html_template = html_template.replace('{{ content }}', text)
     base_url = QUrl.fromLocalFile(os.path.dirname(__file__))
     
     self.setHtml(html_template, base_url)
     self.modified = False
     
     if not self.waitForReady:
         self.loop.exec()

    def commRqData(self, requestName, trCode, inquiry, screenNo):
        """
        키움서버에 TR 요청을 한다.

        조회요청메서드이며 빈번하게 조회요청시, 시세과부하 에러값 -200이 리턴된다.

        :param requestName: string - TR 요청명(사용자 정의)
        :param trCode: string
        :param inquiry: int - 조회(0: 조회, 2: 남은 데이터 이어서 요청)
        :param screenNo: string - 화면번호(4자리)
        """

        if not self.getConnectState():
            raise KiwoomConnectError()

        if not (isinstance(requestName, str)
                and isinstance(trCode, str)
                and isinstance(inquiry, int)
                and isinstance(screenNo, str)):

            raise ParameterTypeError()

        returnCode = self.dynamicCall("CommRqData(QString, QString, int, QString)", requestName, trCode, inquiry, screenNo)

        if returnCode != ReturnCode.OP_ERR_NONE:
            raise KiwoomProcessingError("commRqData(): " + ReturnCode.CAUSE[returnCode])

        # 루프 생성: receiveTrData() 메서드에서 루프를 종료시킨다.
        self.requestLoop = QEventLoop()
        self.requestLoop.exec_()

    def terminate(self):
        # Only run this once.
        if self._isAlive:
            self._isAlive = False
            self._terminate()

            # Waiting for the thread or thread pool to shut down may have
            # placed completed jobs in this thread's queue. Process them now to
            # avoid any surprises (terminated `_AsyncAbstractController`_
            # instances still invoke callbacks, making it seem that the
            # terminate didn't fully terminate. It did, but still leaves g_
            # callbacks to be run in the event queue.)
            el = QEventLoop(self.parent())
            QTimer.singleShot(0, el.exit)
            el.exec_()

            # Delete the `QObject <http://doc.qt.io/qt-5/qobject.html>`_
            # underlying this class, which disconnects all signals.
            sip.delete(self)