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https://issues.apache.org/jira/browse/PDFBOX-5384?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17900838#comment-17900838
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Tilman Hausherr edited comment on PDFBOX-5384 at 11/25/24 12:49 PM:
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Same problem here: [^PDFJS-15719_reduced.pdf] [^PDFJS-15719.pdf]
The change happened in [ [https://svn.apache.org/r1841866] ], which is the same
as mentioned above.
After looking at [https://github.com/mozilla/pdf.js/issues/15719] and
unsuccessfully working on it, the only thing that worked was to return null in
{{loadUnicodeCmap()}} by adding this "too easy" solution before the log warning
{code:java}
if (getName() != null && getName().startsWith("Tahoma"))
{
return null;
}
{code}
Running my regression tests brought me back to this issue that I had forgotten.
The PDF.js people use a predefined table for Tahoma and Verdana, very weird.
was (Author: tilman):
Same problem here: [^PDFJS-15719_reduced.pdf] [^PDFJS-15719.pdf]
The change happened in [ https://svn.apache.org/r1841866 ], which is likely the
same as mentioned above.
After looking at https://github.com/mozilla/pdf.js/issues/15719 and
unsuccessfully working on it, the only thing that worked was to return null in
{{loadUnicodeCmap()}} by adding this "too easy" solution before the log warning
{code:java}
if (getName() != null && getName().startsWith("Tahoma"))
{
return null;
}
{code}
Running my regression tests brought me back to this issue.
The PDF.js people use a predefined table for Tahoma and Verdana, very weird.
> Wrong glyphs used
> -----------------
>
> Key: PDFBOX-5384
> URL: https://issues.apache.org/jira/browse/PDFBOX-5384
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.25
> Reporter: Oliver Schmidtmer
> Priority: Major
> Labels: regression
> Attachments: DOR-EC E-N20_118345.pdf, PDFJS-15719.pdf,
> PDFJS-15719_reduced.pdf, image-2022-03-02-23-41-15-844.png
>
>
> The attached PDF uses Tahoma fonts.
> It seems the correct font is used, but it uses the wrong glyphs.
> For example the "6" from the screenshot is definitely from Tahoma Glyph 25 /
> CID 54, where it should be "S" Glyph 54 / CID 83.
> The "=" in screenshot is Glyph 32 CID 61 where "Z" Glyph 61 CID 90 should be
> used.
> !image-2022-03-02-23-41-15-844.png!
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