QPdfWriter QPrinter QPainter 自定义生成PDF文件 基本控件（十六）

一、效果图


二、代码

    QFile file(QCoreApplication::applicationDirPath() + "/demo.pdf");
    file.open(QIODevice::WriteOnly);
    QPdfWriter* writer = new QPdfWriter(&file);
    QPainter* p = new QPainter(writer);
    writer->setPageSize(QPagedPaintDevice::A4);
    p->drawText(QRect(100, 100, 4200, 2200), QString("我国经济长期向好的基本面没有改变（人民论坛）"));
    writer->newPage();
    delete p;
    delete writer;
    file.close();

    QPrinter printerPixmap(QPrinter::HighResolution);
    printerPixmap.setPageSize(QPrinter::A4);
    printerPixmap.setOutputFormat(QPrinter::PdfFormat);
    printerPixmap.setOutputFileName(QCoreApplication::applicationDirPath() + "/demo1.pdf");

    QPixmap pixmap;
    pixmap.load(QCoreApplication::applicationDirPath() + "/1.jpg");

    QPainter painterPixmap;
    painterPixmap.begin(&printerPixmap);
    QRect rect = painterPixmap.viewport();
    int multiple = rect.width() / pixmap.width();
    painterPixmap.scale(multiple, multiple);
    painterPixmap.drawPixmap(0, 0, pixmap);
    painterPixmap.end();