Insert QPixmap in QTextDocument

Hello guys!

I need to insert a QPixmap in a QTextDocument and all I tried didnt work.

If anyone could help me. Code below:

Code:

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QPrinter impressora(QPrinter::HighResolution);           
            QTextDocument document;
            document.setHtml(html);
            if(matriz == true)
            {
                QPainter painter;
 
                QPalette palette;
 
                QRect rectpag = impressora.pageRect();
 
                palette.setColor(backgroundRole(), QColor(255, 255, 255));
                this->ui->tab_3->setPalette(palette);
                this->ui->tab_3->setAutoFillBackground(true);
 
                QPixmap pm = this->ui->tab_3->grab();
                pm = pm.transformed(QTransform().rotate(270));
                QSize tamanho = pm.size();
 
                tamanho.scale(rectpag.size(), Qt::KeepAspectRatio);
 
                painter.drawPixmap(Qt::AlignCenter, Qt::AlignHCenter, tamanho.width(), tamanho.height(), pm);
 
                document.drawContents(&painter); 
                this->ui->tab_3->setAutoFillBackground(false);
            }
     document.print(&impressora);

---

Thanks a lot.

Your code never tries to insert an image into a QTextDocument. Inserting an image is done with QTextCursor::insertImage() and a suitable QTextImageFormat that names an image resource that has been added using QTextDocument::addResource(). The last link shows an example of this process.

I have not tried it, but I expect that calling QTextDocument::setHtml() with HTML that references an accessible image through an img element should also work.


What your code does is try to paint an image onto a QPainter that is not associated with a paint device (through the constructor or QPainter::begin()). You then draw the contents of the QTextDocument into the same uninitialised painter. When you finally call QTextDocument::print() the document is unchanged and image free.

Thank you for the reply ChrisW67. But I need to insert an image that in not saved in the HD. I can create an image from the Qpixmap and even doing that it will not be in my HD. Can I insert that image with QTextCursor?

Yes, exactly as in the example QTextDocument::addResource() example I linked to before. The URL is just a unique identifier, it does not have to point at a web or file resource.

Thanks ChrisW67. It worked. Code below:

Code:

---

QPrinter impressora(QPrinter::HighResolution);
 
QTextDocument document;
            document.setHtml(html);
            if(matriz == true)
            {
                QTextCursor cursor(&document);
 
                QPalette palette;
 
                palette.setColor(backgroundRole(), QColor(255, 255, 255));
                this->ui->tab_3->setPalette(palette);
                this->ui->tab_3->setAutoFillBackground(true);
 
                QPixmap pm = this->ui->tab_3->grab();
                pm = pm.transformed(QTransform().rotate(270));
 
                cursor.movePosition(QTextCursor::End, QTextCursor::MoveAnchor);
 
                QImage img = pm.toImage();
                img = img.scaledToHeight(img.height()-60);
                cursor.insertImage(img);
 
                this->ui->tab_3->setAutoFillBackground(false);
            }
 
            document.print(&impressora);

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