def __init__(self):
        super().__init__()
        self._handle = RotateToolHandle.RotateToolHandle()

        self._snap_rotation = True
        self._snap_angle = math.radians(15)

        self._angle = None
        self._angle_update_time = None

        self._shortcut_key = Qt.Key_R

        self._progress_message = None
        self._iterations = 0
        self._total_iterations = 0
        self._rotating = False
        self.setExposedProperties("ToolHint", "RotationSnap", "RotationSnapAngle", "SelectFaceSupported", "SelectFaceToLayFlatMode")
        self._saved_node_positions = []

        self._active_widget = None  # type: Optional[RotateToolHandle.ExtraWidgets]
        self._widget_click_start = 0

        self._select_face_mode = False
        Selection.selectedFaceChanged.connect(self._onSelectedFaceChanged) 

def key_handler(self, key_event, state, card, replay_audio):
        """
        Examines the key event to see if the user has triggered one of
        the shortcut options.

        If we do not handle the key here, then it is passed through to
        the normal Anki Reviewer implementation.

        As a special case, if the user sets his/her shortcut to one of
        the built-in audio shorts (i.e. R, F5), will play ALL sounds,
        starting with the built-in ones.
        """

        if state not in ['answer', 'question']:
            return False

        combo = key_event_combo(key_event)
        if not combo:
            return False

        handled = False

        if combo in [Qt.Key_R, Qt.Key_F5]:
            replay_audio()
            handled = True

        question_combo = self._addon.config['tts_key_q']
        if question_combo and combo == question_combo:
            self._play_html('front', card.q(),
                            self._addon.player.otf_shortcut, self._mw)
            handled = True

        answer_combo = self._addon.config['tts_key_a']
        if state == 'answer' and answer_combo and combo == answer_combo:
            self._play_html('back', self._get_answer(card),
                            self._addon.player.otf_shortcut, self._mw)
            handled = True

        return handled 

def test_expression_line_edit(self):
        e = ExpressionLineEdit()
        e.setCompleter(QCompleter(self.form.simulator_tab_controller.completer_model, e))
        e.setValidator(RuleExpressionValidator(self.form.simulator_tab_controller.sim_expression_parser))

        self.assertEqual(e.text(), "")
        QTest.keyClick(e, Qt.Key_R, Qt.NoModifier)
        self.assertEqual(e.text(), "r") 

def __init__(self, parent=None, plugins=None, fullscreen=False):
        super(DeenGui, self).__init__(parent)
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)
        self.plugins = plugins
        self.widgets = []
        self.ui.actionLoad_from_file.triggered.connect(self.load_from_file)
        self.ui.actionQuit.triggered.connect(QApplication.quit)
        self.ui.actionAbout.triggered.connect(self.show_about)
        self.ui.actionStatus_console.triggered.connect(self.show_status_console)
        self.ui.actionTop_to_bottom.triggered.connect(self.set_widget_direction_toptobottom)
        self.ui.actionLeft_to_right.triggered.connect(self.set_widget_direction_lefttoright)
        # Set default direction
        self.set_widget_direction_toptobottom()
        self.ui.actionCopy_to_clipboard.triggered.connect(self.copy_content_to_clipboard)
        self.ui.actionSave_content_to_file.triggered.connect(self.save_widget_content_to_file)
        self.ui.actionSearch.triggered.connect(self.toggle_search_box_visibility)
        self.widgets.append(DeenEncoderWidget(self))
        for widget in self.widgets:
            self.ui.encoder_widget_layout.addWidget(widget)
        self.load_from_file_dialog = QFileDialog(self)
        self.setWindowTitle('deen')
        self.log = DeenLogger(self)
        self.widgets[0].set_field_focus()
        # Add action fuzzy search
        self.fuzzy_search_ui = FuzzySearchUi(self)
        self.fuzzy_search_action_shortcut = QShortcut(QKeySequence(Qt.CTRL | Qt.Key_R), self)
        self.fuzzy_search_action_shortcut.activated.connect(self.fuzzy_search_action)
        self.clear_current_widget_shortcut = QShortcut(QKeySequence(Qt.CTRL | Qt.Key_Q), self)
        self.clear_current_widget_shortcut.activated.connect(self.clear_current_widget)
        self.hide_search_box_shortcut = QShortcut(QKeySequence(Qt.CTRL | Qt.Key_F), self)
        self.hide_search_box_shortcut.activated.connect(self.toggle_search_box_visibility)
        self.next_encoder_widget_shortcut = QShortcut(QKeySequence(Qt.ALT | Qt.Key_Right), self)
        self.next_encoder_widget_shortcut.activated.connect(self.toggle_next_encoder_focus)
        self.prev_encoder_widget_shortcut = QShortcut(QKeySequence(Qt.ALT | Qt.Key_Left), self)
        self.prev_encoder_widget_shortcut.activated.connect(self.toggle_prev_encoder_focus)
        if fullscreen:
            self.showMaximized()
        self.show() 

def keyPressEvent(self, e):
        # 设置快捷键
        if e.key() == Qt.Key_Return:
            self.guess()
        elif e.key() == Qt.Key_Escape:
            qApp.quit()
        elif e.key() == Qt.Key_R:
            self.reset()