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Michael Klink edited comment on PDFBOX-5583 at 3/30/23 4:53 PM: ---------------------------------------------------------------- {quote}I have included an example file where the field named `incrementalChangeField` goes from `NotoSans-Regular` to `NotoSansCJK-Regular` during the incremental change, but the font resource does not get added.{quote} Indeed, the font resources of that field do not change. Most likely you forgot a {{setNeedToBeUpdated}} somewhere. You say you _have also tried to mark the document's PDResource as `setNeedToBeUpdated(true)` but to no avail._ It does not suffice to mark the overall *Resources* dictionary as changed, you also have to mark the dictionaries therein, in particular the value of *Font*. {quote}Related-ish: a similar-ish thing happens when I add a new field to the document after the first signing. In this case, I can see some bits and pieces of the new field in the version change, but something about it is missing and it won't render the new field in Preview, etc.{quote} Most likely you here also forgot to mark some objects as changed. was (Author: mkl): {quote}I have included an example file where the field named `incrementalChangeField` goes from `NotoSans-Regular` to `NotoSansCJK-Regular` during the incremental change, but the font resource does not get added.{quote} Indeed, the font resources of that field do not change. Most likely you forgot a {{setNeedToBeUpdated}} somewhere. You say you _have also tried to mark the document's PDResource as `setNeedToBeUpdated(true)` but to no avail._ It does not suffice to mark the overall *Resources* dictionary as changed, you also have to mark the dictionaries therein, in particular the value of *Font*. > Adding font (or changing font subset) not coming through in saveIncremental > --------------------------------------------------------------------------- > > Key: PDFBOX-5583 > URL: https://issues.apache.org/jira/browse/PDFBOX-5583 > Project: PDFBox > Issue Type: Bug > Components: AcroForm, PDModel, Signing > Affects Versions: 2.0.24 > Reporter: Chris Newhouse > Priority: Major > Attachments: update-after-signature-includes-font-change.pdf > > > In an effort to keep file sizes small, we leverage Font Subsets in our PDFs. > Also, we already have "incremental change and signing" (where fields are > changed _after_ a signature, without voiding the prior signature thanks to > using `saveIncremental` and signing the changes) working just fine in most > cases. > However, when the Font on a field is changed or a new Font Subset must be > added to the document because the characters used in a field with a > tightly-subsetted Font, things don't work correctly: > * The signatures stay valid, which is great > * But the new Font information does not appear to get written to new version > appendix, so you get nonsense rendering in a PDF viewer since the field still > points to a Font resource that is either not there or is a subset that does > not contain all the necessary characters. I'm not super proficient in this so > I don't know exactly what's going on. > > I have ensured that the fields we update are getting marked as > `setNeedToBeUpdated(true)` (this is, I believe, why the fields changes _do_ > end up in the version changes), it just seems that the Font resources are not > getting updated in the version. > I have also tried to mark the document's PDResource as > `setNeedToBeUpdated(true)` but to no avail. > > Is this behavior possible/allowed? Is it a bug or am I doing something wrong? > > I have included an example file where the field named > `incrementalChangeField` goes from `NotoSans-Regular` to > `NotoSansCJK-Regular` during the incremental change, but the font resource > does not get added. > Thanks for your time! -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@pdfbox.apache.org For additional commands, e-mail: dev-h...@pdfbox.apache.org