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From "Tilman Hausherr (Jira)" <j...@apache.org>
Subject [jira] [Commented] (PDFBOX-4692) Document if and when PDFont.getFontDescriptor() may return null
Date Wed, 27 Nov 2019 07:00:00 GMT

    [ https://issues.apache.org/jira/browse/PDFBOX-4692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16983215#comment-16983215
] 

Tilman Hausherr commented on PDFBOX-4692:
-----------------------------------------

1) Many PDFs are not conform to the PDF specification. People then insist "But it displays
on Adobe Reader!!1!", so we improved our code so that it displays with PDFBox.
2) Yes, and sometimes it is accurate, and sometimes it isn't.
3) See the javadoc of getHeight, and no, getHeight is not accurate, it does not use the same
logic.

> Document if and when PDFont.getFontDescriptor() may return null
> ---------------------------------------------------------------
>
>                 Key: PDFBOX-4692
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4692
>             Project: PDFBox
>          Issue Type: Improvement
>          Components: Documentation
>    Affects Versions: 2.0.17
>         Environment: Windows 10.0.18362.418
>            Reporter: Gili
>            Priority: Major
>         Attachments: image-2019-11-16-22-03-15-015.png
>
>
> Please document under which conditions {{PDFont.getFontDescriptor()}} may return null
and what can be done to calculate the text ascent/descent. Clearly, this should be possible
to calculate as the text ends up getting rendered.
> Background information:
> I have a PDF file (credit card statement, so it cannot be shared easily) that contains
an embedded {{PDType3Font}} called "C0EX06Q0". When I invoke {{PDFont.getFontDescriptor()}}
I get null. 
> I have a screenshot of what it looks like. !image-2019-11-16-22-03-15-015.png|thumbnail!




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