How to print a simple HTML table with QWebView and QPrinter without cutting off the right side?

Piotr S.

Since my update from Qt 4.7.4 to Qt 4.8.7 it isn't possible for me to print a simple HTML table without cutting off the right side. Here is the code that shows my HTML table:

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    QWebView *webView = new QWebView();
    webView->load(QUrl("table.html"));

    QPrinter *printer = new QPrinter();
    printer->setPaperSize(QPrinter::A4);

    QPrintPreviewDialog *printPreview = new QPrintPreviewDialog(printer);
    QObject::connect(printPreview, SIGNAL(paintRequested(QPrinter*)), webView, SLOT(print(QPrinter*)));

    a.processEvents();
    printPreview->show();

    return a.exec();
}

This is my simple HTML table:

<!DOCTYPE html>  
<html>
<head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8">    
    <style>
        table {
            width:100%;
            border-collapse:collapse;
        }
        table, td, tr, th{
            border:0.091em solid grey;                 
        }                        
    </style>
</head>

<body>
 <table>
  <tr>
    <th>Firstname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>Lastname</th>
    <th>ENDENAME</th>

  </tr>
  <tr>
    <td>Jill</td>
    <td>Smith</td>
    <td>Smith</td>    
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>Smith</td>
    <td>ENDE</td>
  </tr>
</table>
</body> 
</html>

And this is the ugly result with Qt 4.8.7:

alt text

This was the result with the same table and code in Qt 4.7.4:

alt text

What can I do to solve this issue? I think there is some strange bug in qtwebkit 2.x. I hope someone could help me. Thank you.

mrjj

Hi
Did you try using your own font ?
And set a size.
It seems the font is bigger in 4.8

Piotr S.

Yes, it's bigger because the webkit versions have different default fonts. And yes I tried different font sizes etc. Sure, I can shrink the table size (e.g. via a smaller font size) to manually fit onto the page. But this is not a solution for this issue. I have dynamic generated HTML tables of different widths and the table should always fit on my A4 page (via automatic scaling by QtWebView/QtWebFrame::print). This is the normal behavior in every modern browser if you try to print a wide HTML table and it is the old behavior of Qt 4.7.4 (QtWebkit 1.x).

mrjj

@Piotr-S.
Well i guess its a bug maybe in v2 or some of the logic changed.
Using 1.x seems best option then.

Piotr S.

@mrjj Unfortunately I need Qt 4.8.7. and downgrading to Qt 4.7.4 is not an option for me. So you want to tell me that Qt 4.8.7. is not able to print a simple HTML table? Maybe there is some workaround? I hope someone in this forum has a solution for me. Thank you.

mrjj

Hi
Oh. well there might be bugs reports on
https://bugreports.qt.io
or give a day or two to see if some have work around.
We can hope :)

sneubert

Maybe a solution would be to use a QTextDocument. You can use setHTML to insert your table and print to a QPrinter where you setOutputFormat(QPrinter::PdfFormat). The supporte html subset of QTextDocument can be found here (http://doc.qt.io/qt-4.8/richtext-html-subset.html).

Piotr S.

@sneubert Yes I tried this solution. Unfortunately the supported HTML subset is too small for my tables.

Piotr S.

@mrjj Yeah. I already tried to find a bug report but I can't find one that describes my problem.

mrjj

@Piotr-S.
nah. Not really. I also had a fast search.
I dont have webkit for 5.7 installed so hard to test if its was later fixed but
i doubt it.

sneubert

The only option I see is to create a custom slot for paintRequested signal and use QPainter with QWebFrame::renderand zoomFactor. But this might be a nasty task.

VRonin

@mrjj said in How to print a simple HTML table with QWebView and QPrinter without cutting off the right side?:

I dont have webkit for 5.7 installed so hard to test if its was later fixed but
i doubt it.

Qt 5.5 still affected

SGaist

Hi,

@Konstantin-Tokarev QtWebKit reboot might be worth a try.

Konstantin Tokarev

I would be very surprised if it works (provided Qt version is the same), but it would be better if you tried anyway :)