QML Export as PDF-For Report

tacdin

Hi, image text and other items in the interface need to be reported as PDF. I've tried a few times with this but I'm still running into some issues.

There is a resolution issue here.

#include <Drawer.h>
#include <QQuickWindow>
#include <QPrinter>
#include <QPainter>

PdfExporter::PdfExporter(QQmlApplicationEngine *engine) : QQmlApplicationEngine(engine), mEngine(engine)
{

}

void PdfExporter::screenShot()
{
    foreach(QObject* obj, mEngine->rootObjects()) {
      QQuickWindow* window = qobject_cast<QQuickWindow*>(obj);
      if (window)
      {
        QImage windowImage = window->grabWindow();
        QPrinter pdfPrinter(QPrinter::HighResolution);
        pdfPrinter.setOutputFormat(QPrinter::PdfFormat);
        pdfPrinter.setOutputFileName("test.pdf");
        QPainter painter;
        painter.begin(&pdfPrinter);
        painter.drawImage(QRect(0,0,windowImage.width(),windowImage.height()),windowImage,{0,0,windowImage.width(),windowImage.height()});
        painter.end();
      }
    }
}

Here I can only create a empty pdf file.

void PdfExporter::screenShot()
{
    foreach(QObject* obj, mEngine->rootObjects()) {
      QQuickWindow* window = qobject_cast<QQuickWindow*>(obj);
      if (window)
      {
          QFile pdf_file("QPdfWriter.pdf");
              pdf_file.open(QIODevice::WriteOnly);
              QPdfWriter *pdf_writer = new QPdfWriter(&pdf_file);
              QPainter *pdf_painter = new QPainter(pdf_writer);
              pdf_writer->setPageSize(QPagedPaintDevice::A4);
              pdf_painter->drawText(QRect(100, 100, 2000, 200), "pdf writer3");
              pdf_writer->newPage();
              pdf_painter->drawText(QRect(100, 100, 2000, 200), "pdf writer2");
              delete pdf_painter;
              delete pdf_writer;
              pdf_file.close();

      }
    }
}

When I try this function, only a black screen appears.

void PdfExporter::printSlide()
{
    foreach(QObject* obj, mEngine->rootObjects()) {
      QQuickWindow* window = qobject_cast<QQuickWindow*>(obj);
      if (window)
      {
          QPrinter printer_pixmap(QPrinter::HighResolution);
          printer_pixmap.setPageSize(QPrinter::A4);
          printer_pixmap.setOutputFormat(QPrinter::PdfFormat);
          printer_pixmap.setOutputFileName("E:\\test_pixmap.pdf");
          QPixmap pixmap = QPixmap::grabWindow(window->width(), window->height());

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

I think the problem is with this line

QPixmap pixmap = QPixmap::grabWindow(window->width(), window->height());

KDAB LINK
There is also a link, but no information is given about header files and other files to #include. I didn't understand how to do it.

SGaist

Hi,

QPixmap does not have that method. However your "window" object does.