| Summary: | pdftocairo PDF output breaks embedded fonts | ||
|---|---|---|---|
| Product: | cairo | Reporter: | Stephen E. <bhs2007> |
| Component: | pdf backend | Assignee: | Adrian Johnson <ajohnson> |
| Status: | RESOLVED FIXED | QA Contact: | cairo-bugs mailing list <cairo-bugs> |
| Severity: | normal | ||
| Priority: | medium | CC: | bhs2007 |
| Version: | unspecified | ||
| Hardware: | Other | ||
| OS: | All | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
| Attachments: |
Input file with embedded fonts
Before and After Comparison |
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Created attachment 134820 [details]
Before and After Comparison
Screenshot comparing the input and output files using Evince
The font family name in the embedded font contained > 3000 chars of garbage. As a result the font name was truncated and missing the closing delimiter. Prevent long strings from being truncated in PDF file: https://cgit.freedesktop.org/cairo/commit/?id=202a9ed64e3d164307defddb41a9f8cf9e9b751b Sanity check the font name length and ignore it if too long: https://cgit.freedesktop.org/cairo/commit/?id=bb10bd10138a262759b37281135b5199e334f392 Interesting finding! Thank you for the explanation and fast fix. I'm assuming if I now build libcairo from master and then re-run pdftocairo, I should see a different result? Yes, it works for me now. The missing delimiter caused viewers to fail to parse the font and as a result substitute it with something else. |
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Created attachment 134819 [details] Input file with embedded fonts Steps to reproduce: 1. Save the attached file (EmbeddedFont.pdf) 2. Run: pdftocairo -pdf EmbeddedFont.pdf out.pdf Expected: - Output has same appearance as input (a serif font). Actual: - Output falls back to a system font (sans serif) because fonts are no longer embedded. Notes: - The other output formats (PNG, JPEG, SVG) appear to produce the correct/desired appearance. Only the PDF output is affected.