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https://issues.apache.org/jira/browse/PDFBOX-542?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Villu Ruusmann updated PDFBOX-542:
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Attachment: pdfbox-r823839.patch
Fixed the way how a Type1C font program's built-in encoding is overridden by an
Encoding entry in the PDF font dictionary.
> Support for Adobe CFF/Type2 fonts
> ---------------------------------
>
> Key: PDFBOX-542
> URL: https://issues.apache.org/jira/browse/PDFBOX-542
> Project: PDFBox
> Issue Type: New Feature
> Components: FontBox, PDModel
> Affects Versions: 0.8.0-incubator
> Reporter: Villu Ruusmann
> Assignee: Andreas Lehmkühler
> Attachments: fontbox-r818793.patch, pdfbox-r823839.patch,
> with-cff.png, without-cff.png
>
>
> PDFBox should support embedded font types, most prominently the Adobe
> CFF/Type2 (aka Type1C) font type. The desired functionality includes both
> glyph metrics (for PDF text extraction using
> org.apache.pdfbox.util.PDFTextStripper) and glyph painting (for PDF rendering
> using org.apache.pdfbox.pdfviewer.PageDrawer).
> I have implemented the basics of Adobe CFF/Type2 font specification. If the
> other project members find my work substantial, I would like to see it
> incorporated into FontBox/PDFBox projects. Please see the attached patch
> files.
> Design considerations. A PDF FontFile3 stream can be parsed into CFFFont
> objects by class CFFParser. CFFFont contains a map of glyph names to Type2
> charstrings, which can be converted to Type1 charstrings by class
> CharStringConverter and rendered by class CharStringRenderer. Glyph metrics
> is attained by formatting the result as AFM by class AFMFormatter, which
> plugs nicely with existing PDFBox infrastructure. Glyph painting is attained
> by formatting the result as PostScript Type1 font by class
> Type1FontFormatter, which can be loaded via java.awt.Font#createFont(int,
> InputStream).
> The current implementation does not support synthetic CFF fonts nor CID-keyed
> CFF fonts. Also, the conversion of certain Type2 features (stemming, hinting,
> flex) is missing.
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