nl_tokens: Image functionality ported from pdf . js
pl_tokens: function determineWidthAndHeight ( w , h , info ) { if ( ! w && ! h ) { w = - 96 ; h = - 96 ; } if ( w < 0 ) { w = - 1 * info [ 'w' ] * 72 / w / this . internal . scaleFactor ; } if ( h < 0 ) { h = - 1 * info [ 'h' ] * 72 / h / this . internal . scaleFactor ; } if ( w === 0 ) { w = h * <mask> [ 'w' ] / info [ 'h' ] ; } if ( h === 0 ) { h = w * info [ 'h' ] / info [ 'w' ] ; } return [ w , h ] ; }