I work on XSL-FO (to play exact invoice print) format http://xmlgraphics.apache.org/fop/ to parse all on
QTextDocument && dispay on QTextBrowser or QGraphicsScene .

i found em unit nummer is this same as inch? or how is the faktor to convert on point?


[HTML]
<fo:block>
<fo:block font-size="16pt" font-weight="bold" space-before.minimum="1em" space-before.optimum="1.5em" space-before.maximum="2em">Sized</fo:block>
<fo:block>
The image
(<fo:external-graphic width="150pt" height="50pt" src="images/fop.jpg"/>)
has the width and height set.
</fo:block>
</fo:block>
[/HTML]


is the faktor here correct or mistake?

Qt Code: 
  1. double FopFormat::ConvertUnit( const QString &data )
  2. {
  3.   #define MM_TO_POINT(mm) ((mm)*2.83465058)
  4.   #define CM_TO_POINT(cm) ((cm)*28.3465058)
  5.   #define DM_TO_POINT(dm) ((dm)*283.465058)
  6.   #define INCH_TO_POINT(inch) ((inch)*72.0)
  7.   #define PI_TO_POINT(pi) ((pi)*12)
  8.   #define DD_TO_POINT(dd) ((dd)*154.08124)
  9.   #define CC_TO_POINT(cc) ((cc)*12.840103)
  10.   #define EM_TO_POINT(em) ((em)*25.02)
  11.  
  12.   double points = 0;
  13.   if ( data.endsWith( "pt" ) ) {
  14.     points = data.left( data.length() - 2 ).toDouble();
  15.   } else if ( data.endsWith( "cm" ) ) {
  16.     double value = data.left( data.length() - 2 ).toDouble();
  17.     points = CM_TO_POINT( value );
  18.   } else if ( data.endsWith( "em" ) ) {
  19.     double value = data.left( data.length() - 2 ).toDouble();
  20.     points = EM_TO_POINT( value );
  21.   } else if ( data.endsWith( "mm" ) ) {
  22.     double value = data.left( data.length() - 2 ).toDouble();
  23.     points = MM_TO_POINT( value );
  24.   } else if ( data.endsWith( "dm" ) ) {
  25.     double value = data.left( data.length() - 2 ).toDouble();
  26.     points = DM_TO_POINT( value );
  27.   } else if ( data.endsWith( "in" ) ) {
  28.     double value = data.left( data.length() - 2 ).toDouble();
  29.     points = INCH_TO_POINT( value );
  30.   } else if ( data.endsWith( "inch" ) ) {
  31.     double value = data.left( data.length() - 4 ).toDouble();
  32.     points = INCH_TO_POINT( value );
  33.   } else if ( data.endsWith( "pi" ) ) {
  34.     double value = data.left( data.length() - 4 ).toDouble();
  35.     points = PI_TO_POINT( value );
  36.   } else if ( data.endsWith( "dd" ) ) {
  37.     double value = data.left( data.length() - 4 ).toDouble();
  38.     points = DD_TO_POINT( value );
  39.   } else if ( data.endsWith( "cc" ) ) {
  40.     double value = data.left( data.length() - 4 ).toDouble();
  41.     points = CC_TO_POINT( value );
  42.   } else {
  43.     points = 12;
  44.     qDebug( "unknown unit %s", qPrintable( data ) );
  45.   }
  46.  
  47.   return points;
  48. }
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