You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@pdfbox.apache.org by "John Hewson (JIRA)" <ji...@apache.org> on 2015/11/11 19:31:11 UTC
[jira] [Comment Edited] (PDFBOX-3098) getFontFile2() doesn't
extract a valid font file for CID Type 2 fonts
[ https://issues.apache.org/jira/browse/PDFBOX-3098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15000853#comment-15000853 ]
John Hewson edited comment on PDFBOX-3098 at 11/11/15 6:30 PM:
---------------------------------------------------------------
TTF fonts embedded in PDF don't have the same set of required tables as standalone fonts. In fact, it's possible for the PDF file to specify an encoding for the font which maps the same Unicode character to different glyphs, which isn't something that's possible with a cmap table. So in the general case, creating a default cmap table doesn't work.
There's also the issue of other missing tables such as OS/2, unless the PDF file embeds ascender and descender information, we can't recreate those accurately.
was (Author: jahewson):
That's correct. You're expecting an OTF font, which is a CFF font with an SFNT wrapper. However, PDF supports "bare" CFF fonts, which is just the CFF data without an SFNT wrapper. The file extension for these is .cff and they can be opened with FontForge, but few other tools.
> getFontFile2() doesn't extract a valid font file for CID Type 2 fonts
> ---------------------------------------------------------------------
>
> Key: PDFBOX-3098
> URL: https://issues.apache.org/jira/browse/PDFBOX-3098
> Project: PDFBox
> Issue Type: Improvement
> Components: FontBox
> Affects Versions: 2.0.0
> Environment: Windows 10
> Reporter: Ch. Schlatter
>
> I tried to extract an CID Type 2 font (proceed as described in the ExtractTTFFonts.java example). It seems that the extracted font isn't valid due the missing cmap table. Maybe it's possible to add an default table?
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@pdfbox.apache.org
For additional commands, e-mail: dev-help@pdfbox.apache.org