perform hittest on start text editing

        option.state = QStyle.State_None

        super().paint(painter, option, widget)

    def startEdit(self) -> None:

    def startEdit(self, pos: QPointF = None) -> None:

        self.pre_editing = False

        self.setCacheMode(QGraphicsItem.CacheMode.NoCache)

        self.setTextInteractionFlags(Qt.TextInteractionFlag.TextEditorInteraction)

        self.setFocus()

        self.begin_edit.emit(self.idx)

        if pos is not None:

            hit = self.layout.hitTest(pos, None)

            cursor = self.textCursor()

            cursor.clearSelection()

            cursor.setPosition(hit)

            self.setTextCursor(cursor)

    def endEdit(self) -> None:

        self.end_edit.emit(self.idx)

        cursor = self.textCursor()

        self.old_cursorpos = cursor.position()

        cursor.clearSelection()

        self.setTextCursor(cursor)

        self.setTextInteractionFlags(Qt.TextInteractionFlag.NoTextInteraction)

        return self.textInteractionFlags() == Qt.TextInteractionFlag.TextEditorInteraction

    def mouseDoubleClickEvent(self, event: QGraphicsSceneMouseEvent) -> None:    

        self.startEdit()

        super().mouseDoubleClickEvent(event)

        self.startEdit(pos=event.pos())

    def mouseMoveEvent(self, event: QGraphicsSceneMouseEvent) -> None:

        if not self.bound_checking or \