Python QEventLoop.quit方法代碼示例

# 需要導入模塊: from PyQt5.QtCore import QEventLoop [as 別名]
# 或者: from PyQt5.QtCore.QEventLoop import quit [as 別名]
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()

# 需要導入模塊: from PyQt5.QtCore import QEventLoop [as 別名]
# 或者: from PyQt5.QtCore.QEventLoop import quit [as 別名]
class Ace(QWebView):
    """ Embbeded Ace javascript web editor """
    
    isReady = pyqtSignal(name='isReady')
    modificationChanged = pyqtSignal(bool)
    cursorPositionChanged = pyqtSignal(int, int, name='cursorPositionChanged')
    
    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()
    
    @pyqtSlot(str, name='test', result=str)
    @EditorHelper.json_dumps
    def test(self, prefix):
        print(prefix)
        return ['plop', 'cool', 42, {'plop':23}]
    
    def modification_changed(self, b):
        self.modified = b
    
    def save(self, parent, action=None):
        Alter.invoke_all('editor_presave', self)
        if self.modified:
            with open(self.file_info.absoluteFilePath(), 'w') as f:
                f.write(self.get_value())
            self.original_to_current_doc()
            self.modificationChanged.emit(False)
            parent.status_bar.showMessage(self.tr("Saved file."))
            Alter.invoke_all('editor_save', self)
        else :
            parent.status_bar.showMessage(self.tr("Nothing to save."))
    
    def toggle_hidden(self, parent, action=None):
        self.set_show_invisibles(action.isChecked())
    
    def toggle_soft_tabs(self, parent, action=None):
        self.set_use_soft_tabs(action.isChecked())
    
    def main_frame(self):
        """ Convinient function to get main QWebFrame """
        return self.page().mainFrame()
    
    def send_js(self, script):
        """ Convinient function to send javascript to ace editor """
        return self.main_frame().evaluateJavaScript(script)

    def __self_js(self):
        self.main_frame().addToJavaScriptWindowObject('AceEditor', self)
    
    @pyqtSlot(name='isReady')
    def editor_ready(self):
        if self.language != None:
            self.set_mode(self.language.lower())
        self.set_focus()
        if self.loop.isRunning():
            self.loop.quit()
        self.waitForReady = True
    
    def showInspector(self):
        self.dialogInspector = QDialog(self)
        self.dialogInspector.setLayout(QVBoxLayout())
        self.dialogInspector.layout().addWidget(self.inspector)
        self.dialogInspector.setModal(False)
        self.dialogInspector.show()
    
    def original_to_current_doc(self):
        self.send_js('editor.orignalToCurrentDoc()')
    
    def get_value(self):
#.........這裏部分代碼省略.........