How i can center a image on QTextDocument? / set aligment? set border?

if i use toImageFormat() from QTextBlockFormat the image is not visible... why?

can i subclass QTextImageFormat and paint differents..? is this possibel?



Qt Code: 
  1. /* http://www.zvon.org/xxl/xslfoReference/Output/index.html */
  2. bool FopFormat::ImageParserTag(  const QDomElement &e  )
  3. {
  4.       QPixmap pixm;
  5.       qreal wi = ConvertUnit( e.attribute( "width" ));
  6.       qreal hi = ConvertUnit( e.attribute( "height" ));
  7.       bool having = false;
  9.  
  10.                /* search special alignment on fo:external-graphic */
  11.                QDomNamedNodeMap attlist = e.attributes();
  12.                 for (int i=0; i<attlist.count(); i++){
  13.                       QDomNode nod = attlist.item(i);
  14.                    if (nod.nodeName().toLower() == "text-align") {
  15.                           if (nod.nodeValue().toLower() == "center" ) {
  16.                           pf.setAlignment( Qt::AlignCenter );
  17.                           } else if (nod.nodeValue().toLower() == "left" || nod.nodeValue().toLower() == "start" || nod.nodeValue().toLower() == "inside" ) {
  18.                           pf.setAlignment( Qt::AlignLeft );
  19.                           } else if (nod.nodeValue().toLower() == "right" || nod.nodeValue().toLower() == "end"  ) {
  20.                           pf.setAlignment( Qt::AlignRight );
  21.                           } else if (nod.nodeValue().toLower() == "justify") {
  22.                           pf.setAlignment( Qt::AlignJustify );
  23.                           }  else if (nod.nodeValue().toLower() == "inherit") {
  24.                              /* align same as parent before */
  25.                           pf.setAlignment( Qt::AlignAbsolute );
  26.                           }
  27.                      }
  28.                  }
  29.  
  30.         QTextImageFormat format;  /////////// = pf.toImageFormat();   /* destroy imageformat */
  31.  
  32.       const QString href = e.attribute( "src" );
  33.       if (!href.endsWith( ".svg" )) {
  34.           QFile file(href);
  35.           if (file.exists()) {
  36.            pixm.load(href);
  37.            QFileInfo fi(href);
  38.            Tdoc->addResource( QTextDocument::ImageResource, QUrl(href), QPixmap(QString(":%1").arg(fi.baseName())) );
  39.            having = true;
  40.           }
  41.       }
  42.       if (having) {
  43.       format.setAnchor(true);
  44.       format.setAnchorHref ( href );
  45.       if (wi > 0) {
  46.       format.setWidth( wi  );
  47.       } else {
  48.       format.setWidth( pixm.width()  );
  49.       }
  50.       if (hi > 0) {
  51.       format.setHeight( hi );
  52.       } else {
  53.       format.setHeight( pixm.height() );
  54.       }
  55.       format.setName( href );
  56.       format.setToolTip(QString("Image %1 %2x%3").arg(href).arg(wi).arg(hi));
  57.       Tcursor->insertImage( format );
  58.       }
  59.       return having;
  60. }
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