spreadsheetitem.py 文件源码

def data(self, role):
        if role in (Qt.EditRole, Qt.StatusTipRole):
            return self.formula()
        if role == Qt.DisplayRole:
            return self.display()
        t = str(self.display())
        try:
            number = int(t)
        except ValueError:
            number = None
        if role == Qt.TextColorRole:
            if number is None:
                return QColor(Qt.black)
            elif number < 0:
                return QColor(Qt.red)
            return QColor(Qt.blue)

        if role == Qt.TextAlignmentRole:
            if t and (t[0].isdigit() or t[0] == '-'):
                return Qt.AlignRight | Qt.AlignVCenter
        return super(SpreadSheetItem, self).data(role)