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copied!<p>What you want is a <code>DocumentFont</code>. You cannot create them directly, the constructor is package private, but <code>BaseFont.createFont(PRIndirectReference)</code> will do the trick.</p> <p>So you just need to get a <code>PRIndirectReference</code> to the font you want. "PR"s come from a PdfReader. There are two ways to find the font you're looking for and get a reference to it:</p> <p>1) Enumerate every object in the PdfReader, filtering out everything that's not a <code>PRStream</code>, from there dropping everything that's not a <code>/Type /Font</code>, and looking for a font with the correct name.</p> <pre><code>public PRIndirectReference findNamedFont( PdfReader myReader, String desiredFontName) { int objNum = 0; PdfObject curObj; do { //The "Release" version doesn't keep a reference //to the object so it can be GC'd later. Quite Handy //when dealing with Really Big PDFs. curObj = myReader.getPdfObjectRelease( objNum++ ); if (curObj instanceof PRStream) { PRStream stream = (PRStream)curObj; PdfName type = stream.getAsName(PdfName.TYPE); if (PdfName.FONT.equals(type)) { PdfString fontName = stream.getAsString(PdfName.BASEFONT); if (desiredFontName.equals(fontName.toString())) { return curObj.getIndRef(); } } } } while (curObj != null); return null; } </code></pre> <p>2) Examine your pages' resource dictionaries <code>/Font <<>></code> dicts, looking for a font with the correct name. Keep in mind that XObject Form resources have resources of their own you'll have to check to:</p> <pre><code>public PRIndirectReference findFontInPage(PdfReader reader, String desiredName, int i) { PdfDictionary page = reader.getPageN(i); return findFontInResources(page.getAsDict(PdfName.RESOURCES), desiredName); } public PRIndirectReference findFontInResources(PdfDictionary resources, String desiredName) { if (resources != null) { PdfDictionary fonts = resources.getAsDict(PdfName.FONTS); if (fonts != null) { for (PdfName curFontName : fonts.keySet()) { PRStream curFont (PRStream)= fonts.getAsStream(curFontName); if (desiredName.equals(curFont.getAsString(PdfName.BASEFONT).toString()) { return (PRIndirectReference) curFont.getIndirectReference(); } } } PdfDictionary xobjs = resources.getAsDict(PdfName.XOBJECTS); if (xobjs != null) { for (PdfName curXObjName : xobjs.keySet()) { PRStream curXObj = (PRStream)xobjs.getAsStream(curXObjName); if (curXObj != null && PdfName.FORM.equals(curXObj.getAsName(PdfName.SUBTYPE)) { PdfDictionary resources = curXObj.getAsDict(PdfName.RESOURCES); PRIndirectReference ref = findFontInResources(resources, desiredName); if (ref != null) { return ref; } } } } } return null; } </code></pre> <p>Either one of those will get you the <code>PRIndirectReference</code> you're after. Then you call <code>BaseFont.createFont(myPRRef)</code> and you'll have the <code>DocumentFont</code> you need. The first method will find any font in the PDF, while the second will only find fonts That Are Actually Used.</p> <p>Also, subsetted fonts are supposed to have a "6-random-letters-plus-sign" tag prepended to the font name. DO NOT use a font subset. The characters you're using may not be in the subset, leading to what I call the " arry ole" problem. It sounds nice and dirty, but it was really just our sales guy's name: "Harry Vole" missing the upper case letters because I'd subsetted some font I shouldn't have Many Moons Ago.</p> <p>PS: never embed subsets of fonts you intend to be used in a form field. No Bueno.</p> <p>The usual "I wrote all that code in the answer box here" disclaimer applies, but I've written a LOT of this sort of code, so it just might work out of the box. Cross your fingers. ;)</p>

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