public void setZoom ( float min , float max ) { if ( min <= 0 && max < 0 ) return ; PdfDictionary usage = getUsage ( ) ; PdfDictionary dic = new PdfDictionary ( ) ; if ( min > 0 ) dic . put ( PdfName . MIN_LOWER_CASE , new PdfNumber ( min ) ) ; if ( max >= 0 ) dic . put ( PdfName . MAX_LOWER_CASE , new PdfNumber ( max ) ) ; usage . put ( PdfName . ZOOM , dic ) ; }
Specifies a range of magnifications at which the content in this optional content group is best viewed .