Qt Print QStandardItemModel - qt

Question

I want to print rows of "QStandardItemModel". I use this code, It works but table is not beautiful.
I don't know how to adjust row height and I don't know how to set column widths based on the width of cells in the first row of the table.
QPrinter printer;
printer.setPageSize(QPrinter::A4);
printer.setFullPage(true);
QPrintDialog *dlg = new QPrintDialog(&printer,0);
if(dlg->exec() == QDialog::Accepted) {
QPainter painter;
if (painter.begin(&printer)) {
painter.translate(0,0);
int position = 0;
int rowCount=newMyModel->rowCount(QModelIndex());
for(int r=0;r<rowCount;r++)
{
if( position > painter.window().height()-100 )
{
printer.newPage();
position = 0;
painter.resetTransform();
painter.translate(0, 0);
}
QString html="<table style='page-break-after:always' border='1' width='100%' cellpadding =10 style='border-width: 1px;border-style: solid;border-color: #9e9e9e;width:100%'>";
index=newMyModel->index(r, 0);
QVariant prop1=index.data(MyModel::prop1);
QVariant prop2=index.data(MyModel::prop2);
'''
'''
'''
html.append(
"<tr style='background-color:red'>"
"<td style='border-width: 1px;padding:10; border-style: solid; border-color: #9e9e9e;width:16%'>"+prop1.toString()+" </td>"
"<td style='border-width: 1px;padding:10; border-style: solid; border-color: #9e9e9e;width:16%'>"+prop2.toString()+" </td>"
...
...
...);
}
html.append("</table>");
QRect rect = painter.boundingRect(painter.window(),
Qt::AlignJustify | Qt::TextWordWrap,
html);
QTextDocument doc;
doc.setHtml(html);
doc.drawContents(&painter, rect);
painter.drawRect(rect);
painter.translate(0, rect.height());
position += rect.height();
}
painter.end();
}
}