Qt 4.7 export html document to pdf: strange

[giusepped]

I just moved to Qt 4.7. Compilation is a charm but when I use the export to pdf document of an html content, results are different with respect to previous version.
The code (that I did not change)

medie = " <table width=680><tbody><tr bgcolor=\"lightGray\" ><td colspan=3  >"+        QObject::tr("Valori medi mensili") +"</td></tr>";
   medie +="<tr><td colspan=3>";
   medie +="<table  width=100% border=1 cellspacing=0 cellpadding=3 ><tr><td></td>";
   medie += "<td>" + QObject::tr("Energia[")+unitEnergy+"]" + "</td>";
   medie += "<td>" + QObject::tr("Fattore Ombre[%]") + "</td>";
   medie += "<td>" + QObject::tr("Perdite termiche[%]") + "</td>";
   medie += "<td>" + QObject::tr("Altre perdite[%]") + "</td>";
   medie += "<td>" + QObject::tr("Temp. medie[<sup>o</sup>]") + "</td>";
   medie += "<td>" + QObject::tr("Vento medio[m/s]") + "</td>";
   medie += "</tr>";
 
   for(int i=0;i<12;i++) {
       medie +=  "<tr>";
       medie += "<td>" + MyMath::months(i+1) + "</td>";
 
        if (Eset)
            medie += "<td>" + QString("%L1").arg(E[i],0,'f',2) + "</td>";
        else
            medie += "<td>" + QString("%L1").arg(0) + "</td>";
 
 
        medie += "<td>" + QString("%L1").arg((opt.shadows.at(i))*100,0,'f',2) + "</td>";
 
 
        medie += "<td>" +QString("%L1").arg((1-
                                             opt.thermalLosses.at(i))*100,0,'f',2) +"</td>";
 
        medie += "<td>" + QString("%L1").arg((opt.otherLoss.at(i))*100,0,'f',2) +"</td>";
 
 
        medie += "<td>" + QString("%L1").arg(opt.temperatures.at(i),0,'f',2) +"</td>";
 
         medie += "<td>" +QString("%L1").arg(opt.wind.at(i),0,'f',2) + "</td>";
 
    medie += "</tr>";
    }
   medie += "</table>";
 
   medie += "</td></tr></tbody></table>";

medie = " <table width=680><tbody><tr bgcolor=\"lightGray\" ><td colspan=3  >"+        QObject::tr("Valori medi mensili") +"</td></tr>";
   medie +="<tr><td colspan=3>";
   medie +="<table  width=100% border=1 cellspacing=0 cellpadding=3 ><tr><td></td>";
   medie += "<td>" + QObject::tr("Energia[")+unitEnergy+"]" + "</td>";
   medie += "<td>" + QObject::tr("Fattore Ombre[%]") + "</td>";
   medie += "<td>" + QObject::tr("Perdite termiche[%]") + "</td>";
   medie += "<td>" + QObject::tr("Altre perdite[%]") + "</td>";
   medie += "<td>" + QObject::tr("Temp. medie[<sup>o</sup>]") + "</td>";
   medie += "<td>" + QObject::tr("Vento medio[m/s]") + "</td>";
   medie += "</tr>";

   for(int i=0;i<12;i++) {
       medie +=  "<tr>";
       medie += "<td>" + MyMath::months(i+1) + "</td>";
       
        if (Eset)
            medie += "<td>" + QString("%L1").arg(E[i],0,'f',2) + "</td>";
        else
            medie += "<td>" + QString("%L1").arg(0) + "</td>";

       
        medie += "<td>" + QString("%L1").arg((opt.shadows.at(i))*100,0,'f',2) + "</td>";

        
        medie += "<td>" +QString("%L1").arg((1-
                                             opt.thermalLosses.at(i))*100,0,'f',2) +"</td>";
       
        medie += "<td>" + QString("%L1").arg((opt.otherLoss.at(i))*100,0,'f',2) +"</td>";

        
        medie += "<td>" + QString("%L1").arg(opt.temperatures.at(i),0,'f',2) +"</td>";
       
         medie += "<td>" +QString("%L1").arg(opt.wind.at(i),0,'f',2) + "</td>";

    medie += "</tr>";
    }
   medie += "</table>";

   medie += "</td></tr></tbody></table>";

To copy to clipboard, switch view to plain text mode 

And I print on a qprinter by using

m_cursor.insertHtml(medie);
 m_document->drawContents(&p,printer->paperRect());

m_cursor.insertHtml(medie);
 m_document->drawContents(&p,printer->paperRect());

To copy to clipboard, switch view to plain text mode 

But the result is a broken table
as attached in the picture.
Why?

[giusepped]

Nobody interested in this bug?
Can someone reproduce the same result?
Regards

[ChrisW67]

What is the actual HTML that is generated? The snippet you provide above shows generation of part of a table inside (I assume) an outer table cell.

[giusepped]

No. If you look carefully there are two tables, one inside the other.
If I put the output to a file and then open it with a web browser, the result is correct.
In previous version of Qt I never had such misprinting problem.

[giusepped]

Nobody intrested? I also have the same problem in other similar tables...simple Chrome-readable tables.

[ChrisW67]

I cannot reproduce the result with either 4.6.3 or 4.7.0 on Linux. I substituted 0 for the actual figures and the month number in place of the month name, but otherwise used your code. I also used the print() method of QTextDocument with good results.