def mousePressEvent(self, e):
        """Set the tabdata ClickTarget on a mousepress.

        This is implemented here as we don't need it for QtWebEngine.
        """
        if e.button() == Qt.MidButton or e.modifiers() & Qt.ControlModifier:
            background = config.val.tabs.background
            if e.modifiers() & Qt.ShiftModifier:
                background = not background
            if background:
                target = usertypes.ClickTarget.tab_bg
            else:
                target = usertypes.ClickTarget.tab
            self._tabdata.open_target = target
            log.mouse.debug("Ctrl/Middle click, setting target: {}".format(
                target))
        else:
            self._tabdata.open_target = usertypes.ClickTarget.normal
            log.mouse.debug("Normal click, setting normal target")
        super().mousePressEvent(e) 

def text(self) -> str:
        """Get the text which would be displayed when pressing this key."""
        control = {
            Qt.Key_Space: ' ',
            Qt.Key_Tab: '\t',
            Qt.Key_Backspace: '\b',
            Qt.Key_Return: '\r',
            Qt.Key_Enter: '\r',
            Qt.Key_Escape: '\x1b',
        }

        if self.key in control:
            return control[self.key]
        elif not _is_printable(self.key):
            return ''

        text = QKeySequence(self.key).toString()
        if not self.modifiers & Qt.ShiftModifier:  # type: ignore[operator]
            text = text.lower()
        return text 

def mouseMoveEvent(self, event):
        if (event.buttons() == Qt.LeftButton and
                (event.modifiers() == Qt.ControlModifier or
                         event.modifiers() == Qt.ShiftModifier)):
            mime_data = QMimeData()
            mime_data.setText(PageWidget.DRAG_MAGIC)

            drag = QDrag(self)
            drag.setMimeData(mime_data)
            drag.setPixmap(self.grab(self.rect()))

            if event.modifiers() == Qt.ControlModifier:
                drag.exec_(Qt.MoveAction)
            else:
                drag.exec_(Qt.CopyAction)

            event.accept()
        else:
            event.ignore() 

def test_selection_cursor_left(self, qtbot, cmd_edit):
        """Test selection persisting when moving to the first char."""
        qtbot.keyClicks(cmd_edit, ':hello')
        assert cmd_edit.text() == ':hello'
        assert cmd_edit.cursorPosition() == len(':hello')
        for _ in ':hello':
            qtbot.keyClick(cmd_edit, Qt.Key_Left, modifier=Qt.ShiftModifier)
        assert cmd_edit.cursorPosition() == len(':')
        assert cmd_edit.selectionStart() == len(':') 

def test_binding_with_shift(self, prompt_keyparser):
        """Simulate a binding which involves shift."""
        for key, modifiers in [(Qt.Key_Y, Qt.NoModifier),
                               (Qt.Key_Shift, Qt.ShiftModifier),
                               (Qt.Key_Y, Qt.ShiftModifier)]:
            info = keyutils.KeyInfo(key, modifiers)
            prompt_keyparser.handle(info.to_event())

        prompt_keyparser.execute.assert_called_once_with('yank -s', None) 

def test_text(self, qt_key, upper):
        """Test KeyInfo.text() with all possible keys.

        See key_data.py for inputs and expected values.
        """
        modifiers = Qt.ShiftModifier if upper else Qt.KeyboardModifiers()
        info = keyutils.KeyInfo(qt_key.member, modifiers=modifiers)
        expected = qt_key.uppertext if upper else qt_key.text
        assert info.text() == expected 

def test_iter(self):
        seq = keyutils.KeySequence(Qt.Key_A | Qt.ControlModifier,
                                   Qt.Key_B | Qt.ShiftModifier,
                                   Qt.Key_C,
                                   Qt.Key_D,
                                   Qt.Key_E)
        expected = [keyutils.KeyInfo(Qt.Key_A, Qt.ControlModifier),
                    keyutils.KeyInfo(Qt.Key_B, Qt.ShiftModifier),
                    keyutils.KeyInfo(Qt.Key_C, Qt.NoModifier),
                    keyutils.KeyInfo(Qt.Key_D, Qt.NoModifier),
                    keyutils.KeyInfo(Qt.Key_E, Qt.NoModifier)]
        assert list(seq) == expected 

def test_repr(self):
        seq = keyutils.KeySequence(Qt.Key_A | Qt.ControlModifier,
                                   Qt.Key_B | Qt.ShiftModifier)
        assert repr(seq) == ("<qutebrowser.keyinput.keyutils.KeySequence "
                             "keys='<Ctrl+a>B'>") 

def test_key_info_to_event():
    info = keyutils.KeyInfo(Qt.Key_A, Qt.ShiftModifier)
    ev = info.to_event()
    assert ev.key() == Qt.Key_A
    assert ev.modifiers() == Qt.ShiftModifier
    assert ev.text() == 'A' 

def test_key_info_to_int():
    info = keyutils.KeyInfo(Qt.Key_A, Qt.ShiftModifier)
    assert info.to_int() == Qt.Key_A | Qt.ShiftModifier 

def _click_fake_event(self, click_target: usertypes.ClickTarget,
                          button: Qt.MouseButton = Qt.LeftButton) -> None:
        """Send a fake click event to the element."""
        pos = self._mouse_pos()

        log.webelem.debug("Sending fake click to {!r} at position {} with "
                          "target {}".format(self, pos, click_target))

        target_modifiers = {
            usertypes.ClickTarget.normal: Qt.NoModifier,
            usertypes.ClickTarget.window: Qt.AltModifier | Qt.ShiftModifier,
            usertypes.ClickTarget.tab: Qt.ControlModifier,
            usertypes.ClickTarget.tab_bg: Qt.ControlModifier,
        }
        if config.val.tabs.background:
            target_modifiers[usertypes.ClickTarget.tab] |= Qt.ShiftModifier
        else:
            target_modifiers[usertypes.ClickTarget.tab_bg] |= Qt.ShiftModifier

        modifiers = typing.cast(Qt.KeyboardModifiers,
                                target_modifiers[click_target])

        events = [
            QMouseEvent(QEvent.MouseMove, pos, Qt.NoButton, Qt.NoButton,
                        Qt.NoModifier),
            QMouseEvent(QEvent.MouseButtonPress, pos, button, button,
                        modifiers),
            QMouseEvent(QEvent.MouseButtonRelease, pos, button, Qt.NoButton,
                        modifiers),
        ]

        for evt in events:
            self._tab.send_event(evt)

        QTimer.singleShot(0, self._move_text_cursor) 

def is_special(key: Qt.Key, modifiers: _ModifierType) -> bool:
    """Check whether this key requires special key syntax."""
    _assert_plain_key(key)
    _assert_plain_modifier(modifiers)
    return not (_is_printable(key) and
                modifiers in [Qt.ShiftModifier, Qt.NoModifier]) 

def __str__(self) -> str:
        """Convert this KeyInfo to a meaningful name.

        Return:
            A name of the key (combination) as a string.
        """
        key_string = _key_to_string(self.key)
        modifiers = int(self.modifiers)

        if self.key in _MODIFIER_MAP:
            # Don't return e.g. <Shift+Shift>
            modifiers &= ~_MODIFIER_MAP[self.key]
        elif _is_printable(self.key):
            # "normal" binding
            if not key_string:  # pragma: no cover
                raise ValueError("Got empty string for key 0x{:x}!"
                                 .format(self.key))

            assert len(key_string) == 1, key_string
            if self.modifiers == Qt.ShiftModifier:
                assert not is_special(self.key, self.modifiers)
                return key_string.upper()
            elif self.modifiers == Qt.NoModifier:
                assert not is_special(self.key, self.modifiers)
                return key_string.lower()
            else:
                # Use special binding syntax, but <Ctrl-a> instead of <Ctrl-A>
                key_string = key_string.lower()

        modifiers = Qt.KeyboardModifier(modifiers)

        # "special" binding
        assert is_special(self.key, self.modifiers)
        modifier_string = _modifiers_to_string(modifiers)
        return '<{}{}>'.format(modifier_string, key_string) 

def key_event_sequence(event):
        val = event.key()
        mod = event.modifiers()
        if mod & Qt.ShiftModifier:
            val += Qt.SHIFT
        if mod & Qt.ControlModifier:
            val += Qt.CTRL
        if mod & Qt.AltModifier:
            val += Qt.ALT
        if mod & Qt.MetaModifier:
            val += Qt.META
        return QKeySequence(val) 

def changeSelection(self, index):
        """Either select or deselect an item"""

        modifiers = QApplication.keyboardModifiers()
        ctrl_is_active = modifiers & Qt.ControlModifier
        shift_is_active = modifiers & Qt.ShiftModifier

        if ctrl_is_active:
            item = self._objects_model.getItem(index)
            node = item["node"]
            if Selection.isSelected(node):
                Selection.remove(node)
            else:
                Selection.add(node)
        elif shift_is_active:
            polarity = 1 if index + 1 > self._last_selected_index else -1
            for i in range(self._last_selected_index, index + polarity, polarity):
                item = self._objects_model.getItem(i)
                node = item["node"]
                Selection.add(node)
        else:
            # Single select
            item = self._objects_model.getItem(index)
            node = item["node"]
            build_plate_number = node.callDecoration("getBuildPlateNumber")
            if build_plate_number is not None and build_plate_number != -1:
                self.setActiveBuildPlate(build_plate_number)
            Selection.clear()
            Selection.add(node)

        self._last_selected_index = index 

def onKeyPressEvent(self, e):
        if not e.isAutoRepeat():
            keys = e.key()
            modifiers = e.modifiers()

            if modifiers & Qt.ShiftModifier:
                keys += Qt.SHIFT
            if modifiers & Qt.ControlModifier:
                keys += Qt.CTRL
            if modifiers & Qt.AltModifier:
                keys += Qt.ALT
            if modifiers & Qt.MetaModifier:
                keys += Qt.META

            if QKeySequence(keys) in self._go_key_sequence:
                self.go()
            elif e.key() == Qt.Key_Space:
                if qApp.keyboardModifiers() == Qt.ShiftModifier:
                    cue = self.current_cue()
                    if cue is not None:
                        self.edit_cue(cue)
                elif qApp.keyboardModifiers() == Qt.ControlModifier:
                    item = self.current_item()
                    if item is not None:
                        item.selected = not item.selected
            else:
                self.key_pressed.emit(e)

        e.accept() 

def dropEvent(self, event):
        row, column = self._event_index(event)
        if self.layout().itemAtPosition(row, column) is None:
            if qApp.keyboardModifiers() == Qt.ControlModifier:
                event.setDropAction(Qt.MoveAction)
                event.accept()
                self.move_drop_event.emit(event.source(), row, column)
            elif qApp.keyboardModifiers() == Qt.ShiftModifier:
                event.setDropAction(Qt.CopyAction)
                self.copy_drop_event.emit(event.source(), row, column)
                event.accept()

        event.ignore() 

def _clicked(self, event):
        if not (self.seekSlider.geometry().contains(event.pos()) and
                    self.seekSlider.isVisible()):
            if event.button() != Qt.RightButton:
                if event.modifiers() == Qt.ShiftModifier:
                    self.edit_request.emit(self.cue)
                elif event.modifiers() == Qt.ControlModifier:
                    self.selected = not self.selected
                else:
                    self.cue_executed.emit(self.cue)
                    self.cue.execute() 

def dragEnterEvent(self, event):
        if qApp.keyboardModifiers() == Qt.ControlModifier:
            event.setDropAction(Qt.MoveAction)
            event.accept()
        elif qApp.keyboardModifiers() == Qt.ShiftModifier:
            event.setDropAction(Qt.MoveAction)
            event.accept()
        else:
            event.ignore() 

def _GetCtrlShift(self, ev):
        ctrl = shift = False

        if hasattr(ev, 'modifiers'):
            if ev.modifiers() & Qt.ShiftModifier:
                shift = True
            if ev.modifiers() & Qt.ControlModifier:
                ctrl = True
        else:
            if self.__saveModifiers & Qt.ShiftModifier:
                shift = True
            if self.__saveModifiers & Qt.ControlModifier:
                ctrl = True

        return ctrl, shift 

def _GetCtrlShift(self, ev):
        ctrl = shift = False

        if hasattr(ev, 'modifiers'):
            if ev.modifiers() & Qt.ShiftModifier:
                shift = True
            if ev.modifiers() & Qt.ControlModifier:
                ctrl = True
        else:
            if self.__saveModifiers & Qt.ShiftModifier:
                shift = True
            if self.__saveModifiers & Qt.ControlModifier:
                ctrl = True

        return ctrl, shift 

def keyPressEvent(self, event):
        if event.modifiers() & Qt.ShiftModifier \
                and event.key() in [Qt.Key_Up, Qt.Key_Down, Qt.Key_Left, Qt.Key_Right]:
            dlat = 1.0 / (self.radarwidget.zoom * self.radarwidget.ar)
            dlon = 1.0 / (self.radarwidget.zoom * self.radarwidget.flat_earth)
            if event.key() == Qt.Key_Up:
                self.radarwidget.panzoom(pan=(dlat, 0.0))
            elif event.key() == Qt.Key_Down:
                self.radarwidget.panzoom(pan=(-dlat, 0.0))
            elif event.key() == Qt.Key_Left:
                self.radarwidget.panzoom(pan=(0.0, -dlon))
            elif event.key() == Qt.Key_Right:
                self.radarwidget.panzoom(pan=(0.0, dlon))

        elif event.key() == Qt.Key_Escape:
            self.closeEvent()

        elif event.key() == Qt.Key_F11:  # F11 = Toggle Full Screen mode
            if not self.isFullScreen():
                self.showFullScreen()
            else:
                self.showNormal()

        else:
            # All other events go to the BlueSky console
            self.console.keyPressEvent(event)
        event.accept() 

def mousePressEvent(self, event: QMouseEvent):
        if self.scene() is None:
            return

        cursor = self.cursor().shape()
        has_shift_modifier = event.modifiers() == Qt.ShiftModifier
        is_in_shift_mode = (has_shift_modifier and self.hold_shift_to_drag) \
                           or (not has_shift_modifier and not self.hold_shift_to_drag) \
                              and cursor != Qt.SplitHCursor and cursor != Qt.SplitVCursor

        if event.buttons() == Qt.LeftButton and is_in_shift_mode:
            self.setCursor(Qt.ClosedHandCursor)
            self.grab_start = event.pos()
        elif event.buttons() == Qt.LeftButton:
            if self.is_pos_in_separea(self.mapToScene(event.pos())):
                self.separation_area_moving = True
                self.setCursor(Qt.SplitVCursor)

            elif self.selection_area.is_empty or self.selection_area.selected_edge is None:
                # Create new selection
                self.mouse_press_pos = event.pos()
                self.mouse_pos = event.pos()
                scene_pos = self.mapToScene(self.mouse_press_pos)
                self.__set_selection_area(x=scene_pos.x(), y=scene_pos.y(), w=0, h=0)
                self.selection_area.finished = False

            elif self.selection_area.selected_edge is not None:
                self.selection_area.resizing = True 

def test_MicroPythonREPLPane_keyPressEvent_CTRL_C_Darwin(qtapp):
    """
    Ensure end key in the REPL is handled correctly.
    """
    mock_serial = mock.MagicMock()
    rp = mu.interface.panes.MicroPythonREPLPane(mock_serial)
    rp.copy = mock.MagicMock()
    data = mock.MagicMock()
    data.key = mock.MagicMock(return_value=Qt.Key_C)
    data.text = mock.MagicMock(return_value="1b")
    data.modifiers.return_value = Qt.ControlModifier | Qt.ShiftModifier
    rp.keyPressEvent(data)
    rp.copy.assert_called_once_with() 

def test_MicroPythonREPLPane_keyPressEvent_CTRL_V_Darwin(qtapp):
    """
    Ensure end key in the REPL is handled correctly.
    """
    mock_serial = mock.MagicMock()
    rp = mu.interface.panes.MicroPythonREPLPane(mock_serial)
    rp.paste = mock.MagicMock()
    data = mock.MagicMock()
    data.key = mock.MagicMock(return_value=Qt.Key_V)
    data.text = mock.MagicMock(return_value="1b")
    data.modifiers.return_value = Qt.ControlModifier | Qt.ShiftModifier
    rp.keyPressEvent(data)
    rp.paste.assert_called_once_with() 

def test_PythonProcessPane_parse_input_paste(qtapp):
    """
    Control-Shift-V (paste) character causes a paste to happen.
    """
    ppp = mu.interface.panes.PythonProcessPane()
    key = Qt.Key_V
    text = ""
    modifiers = Qt.ControlModifier | Qt.ShiftModifier
    ppp.paste = mock.MagicMock()
    ppp.parse_input(key, text, modifiers)
    ppp.paste.assert_called_once_with() 

def test_PythonProcessPane_parse_input_copy(qtapp):
    """
    Control-Shift-C (copy) character causes copy to happen.
    """
    ppp = mu.interface.panes.PythonProcessPane()
    key = Qt.Key_C
    text = ""
    modifiers = Qt.ControlModifier | Qt.ShiftModifier
    ppp.copy = mock.MagicMock()
    ppp.parse_input(key, text, modifiers)
    ppp.copy.assert_called_once_with() 

def _GetCtrlShift(self, ev):
        ctrl = shift = False

        if hasattr(ev, "modifiers"):
            if ev.modifiers() & Qt.ShiftModifier:
                shift = True
            if ev.modifiers() & Qt.ControlModifier:
                ctrl = True
        else:
            if self.__saveModifiers & Qt.ShiftModifier:
                shift = True
            if self.__saveModifiers & Qt.ControlModifier:
                ctrl = True

        return ctrl, shift 

def _handle_wheel(self, e):
        """Zoom on Ctrl-Mousewheel.

        Args:
            e: The QWheelEvent.

        Return:
            True if the event should be filtered, False otherwise.
        """
        if self._ignore_wheel_event:
            # See https://github.com/qutebrowser/qutebrowser/issues/395
            self._ignore_wheel_event = False
            return True

        # Don't allow scrolling while hinting
        mode = modeman.instance(self._tab.win_id).mode
        if mode == usertypes.KeyMode.hint:
            return True

        elif e.modifiers() & Qt.ControlModifier:
            if mode == usertypes.KeyMode.passthrough:
                return False

            divider = config.val.zoom.mouse_divider
            if divider == 0:
                # Disable mouse zooming
                return True

            factor = self._tab.zoom.factor() + (e.angleDelta().y() / divider)
            if factor < 0:
                return True

            perc = int(100 * factor)
            message.info("Zoom level: {}%".format(perc), replace=True)
            self._tab.zoom.set_factor(factor)
            return True
        elif (e.modifiers() & Qt.ShiftModifier and
              not qtutils.version_check('5.9', compiled=False)):
            if e.angleDelta().y() > 0:
                self._tab.scroller.left()
            else:
                self._tab.scroller.right()
            return True

        return False 

def append_event(self, ev: QKeyEvent) -> 'KeySequence':
        """Create a new KeySequence object with the given QKeyEvent added."""
        key = Qt.Key(ev.key())

        _assert_plain_key(key)
        _assert_plain_modifier(ev.modifiers())

        key = _remap_unicode(key, ev.text())
        modifiers = int(ev.modifiers())

        if key == _NIL_KEY:
            raise KeyParseError(None, "Got nil key!")

        # We always remove Qt.GroupSwitchModifier because QKeySequence has no
        # way to mention that in a binding anyways...
        modifiers &= ~Qt.GroupSwitchModifier

        # We change Qt.Key_Backtab to Key_Tab here because nobody would
        # configure "Shift-Backtab" in their config.
        if modifiers & Qt.ShiftModifier and key == Qt.Key_Backtab:
            key = Qt.Key_Tab

        # We don't care about a shift modifier with symbols (Shift-: should
        # match a : binding even though we typed it with a shift on an
        # US-keyboard)
        #
        # However, we *do* care about Shift being involved if we got an
        # upper-case letter, as Shift-A should match a Shift-A binding, but not
        # an "a" binding.
        #
        # In addition, Shift also *is* relevant when other modifiers are
        # involved. Shift-Ctrl-X should not be equivalent to Ctrl-X.
        if (modifiers == Qt.ShiftModifier and
                _is_printable(key) and
                not ev.text().isupper()):
            modifiers = Qt.KeyboardModifiers()  # type: ignore[assignment]

        # On macOS, swap Ctrl and Meta back
        # WORKAROUND for https://bugreports.qt.io/browse/QTBUG-51293
        if utils.is_mac:
            if modifiers & Qt.ControlModifier and modifiers & Qt.MetaModifier:
                pass
            elif modifiers & Qt.ControlModifier:
                modifiers &= ~Qt.ControlModifier
                modifiers |= Qt.MetaModifier
            elif modifiers & Qt.MetaModifier:
                modifiers &= ~Qt.MetaModifier
                modifiers |= Qt.ControlModifier

        keys = list(self._iter_keys())
        keys.append(key | int(modifiers))

        return self.__class__(*keys)