Qt数据库应用之数据打印到pdf

QString DataHelper::DataOut(quint8 type, const QString &file, const QString &title,
                            const QString &sheet, const QStringList &content,
                            const QStringList &columnNames, const QList<int> &columnWidths)
{
    //设置结构体数据
    DataContent dataContent;
    //填充内容
    dataContent.content = content;
    //设置列名列宽
    dataContent.columnNames = columnNames;
    dataContent.columnWidths = columnWidths;
    //设置标题
    dataContent.title = title;

    //如果是导出数据则先判断文件名称是否为空,为空则弹出文件对话框选择
    QString fileName = file;
    if (fileName.isEmpty() && type < 3) {
        //不同的格式后缀
        QString filter = "all files (*.*)";
        if (type == 0) {
            filter = "csv files (*.csv)";
        } else if (type == 1) {
            filter = "xls files (*.xls)";
        } else if (type == 2) {
            filter = "pdf files (*.pdf)";
        }

        fileName = QFileDialog::getSaveFileName(0, "选择保存文件", "", filter);
        if (fileName.isEmpty()) {
            return fileName;
        }
    }

    //设置文件名
    dataContent.fileName = fileName;
    //xls还需要设置表名
    dataContent.sheetName = sheet;

    //调用静态函数
    if (type == 0) {
        //重新组织内容,前面写入标题,分隔符换成csv的定义的分隔符
        QStringList list;
        //把标题加到内容中
        list << columnNames.join(DataCsv::CsvSpliter);
        //重新更换分隔符
        foreach (QString text, content) {
            text.replace(";", DataCsv::CsvSpliter);
            list << text;
        }
        DataCsv::outputData(fileName, list);
    } else if (type == 1) {
        DataXls::saveXls(dataContent);
    } else if (type == 2) {
        DataPrint::savePdf(dataContent);
    } else if (type == 3) {
        DataPrint::print(dataContent);
    }

    return fileName;
}