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Posted to dev@pdfbox.apache.org by "Andreas Lehmkühler (Jira)" <ji...@apache.org> on 2021/02/03 07:24:00 UTC
[jira] [Commented] (PDFBOX-5094) Wrong glyph when rendering a
symbolic TTF font with WinANSIEncoding
[ https://issues.apache.org/jira/browse/PDFBOX-5094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17277753#comment-17277753 ]
Andreas Lehmkühler commented on PDFBOX-5094:
--------------------------------------------
The current implementation uses the an internal font cmap for a symbolic font which maps the wrong glyph.
Excerpt of the spec (9.6.6.4 Encodings for TrueType Fonts)
{quote}If the font has a named Encoding entry of either MacRomanEncoding or WinAnsiEncoding, or if the font
descriptor’s Nonsymbolic flag (see Table 123) is set, the conforming reader shall create a table that maps from
character codes to glyph names:
* If the Encoding entry is one of the names MacRomanEncoding or WinAnsiEncoding, the table shall be initialized
with the mappings described in Annex D.{quote}
I've changed the implementation in {{org.apache.pdfbox.pdmodel.font.PDTrueTypeFont.codeToGID(int)}} and it works. But the described procedure was introduced in PDF 1.3 and I'm not sure if my changes have some unwanted effects if it comes to PDFs < 1.3. WDYT?
> Wrong glyph when rendering a symbolic TTF font with WinANSIEncoding
> -------------------------------------------------------------------
>
> Key: PDFBOX-5094
> URL: https://issues.apache.org/jira/browse/PDFBOX-5094
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.22, 3.0.0 PDFBox
> Reporter: Andreas Lehmkühler
> Assignee: Andreas Lehmkühler
> Priority: Major
> Fix For: 2.0.23, 3.0.0 PDFBox
>
> Attachments: DokumentAusVorlage_Test_PdfBox-1.pdf
>
>
> The attached PDF uses a TTF font which isn't embedded. It's marked as symbolic but uses a WinANSIEncoding. Instead of the german umlaut "ü" another special character is rendered
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