| Summary: | Umlaut conversion error for Type1 fonts in WinAscii Encoding | ||
|---|---|---|---|
| Product: | cairo | Reporter: | Leon Winter <winter> |
| Component: | postscript backend | Assignee: | Adrian Johnson <ajohnson> |
| Status: | RESOLVED FIXED | QA Contact: | cairo-bugs mailing list <cairo-bugs> |
| Severity: | normal | ||
| Priority: | medium | CC: | gpoo+bfdo, winter |
| Version: | unspecified | ||
| Hardware: | x86 (IA32) | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
| Attachments: |
Input document which is printed incorrectly
pdf output |
||
Created attachment 87426 [details]
pdf output
I can't reproduce the problem. Attached is the output I get from pdftocairo -pdf.
The fonts in the original PDF are not embedded. So maybe you are getting different fonts substituted which triggers the bug.
The substitute fonts used on my machine are:
$ pdffonts -subst bug.pdf
name object ID substitute font substitute font file
------------------------------------ --------- ------------------------------------ ------------------------------------
Helvetica 11 0 Nimbus Sans L /usr/share/fonts/X11/Type1/n019003l.pfb
Courier 12 0 Nimbus Mono L /usr/share/fonts/X11/Type1/n022003l.pfb
Courier-Bold 13 0 Nimbus Mono L Bold /usr/share/fonts/X11/Type1/n022004l.pfb
Indeed I get different substitute fonts: $ pdffonts -subst rechnung_weniger_inhalt.pdf name object ID substitute font substitute font file ------------------------------------ --------- ------------------------------------ ------------------------------------ Helvetica 11 0 Nimbus Sans L /usr/share/fonts/X11/Type1/n019003l.pfb Courier 12 0 Courier /usr/share/fonts/type1/texlive-fonts-recommended/pcrr8a.pfb Courier-Bold 13 0 Courier Bold /usr/share/fonts/type1/texlive-fonts-recommended/pcrb8a.pfb Those fonts are provided by my Debian package "texlive-fonts-recommended". I have uninstalled the aforementioned package and can confirm this fonts are the cause for the missing glyphs. After copying that font to /usr/share/fonts/type1 I can now reproduce the bug. |
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Created attachment 87422 [details] Input document which is printed incorrectly Hi, when printing (or running the print preview of) the attached PDF with evince (utilizing the PostScript backend of Cairo of course), the umlauts (like ö) are lost. The fonts used in the PDF are not embedded, the PDF seems to be encoded in a Windows charset and the resulting PostScript seems to include the combined characters for umlauts like 'odieresis', however it cannot render them hinting the possibility it is a combined glyph made up of 'o' and 'dieresis' and one of those might be missing. However my tries to manually include 'dieresis' in the resulting type1 font subset dict were futile. Also probably noteworthy but not relevant to this bug is the fact that xpdf crashes when one tries to open the PDF, which suggests it might by a "strange" PDF. My approach of including 'dieresis' in the dictionary was (patched against cairo-1.12.16 of Debian, the git log of the file seemed to suggest there were no later patches to the file after the Debian release): diff --git a/src/cairo-type1-subset.c b/src/cairo-type1-subset.c index 4b64403..dfcd1a1 100644 --- a/src/cairo-type1-subset.c +++ b/src/cairo-type1-subset.c @@ -1407,6 +1407,15 @@ skip_subrs: cairo_type1_font_subset_use_glyph (font, index); } + for (i = 0; i < font->base.num_glyphs; i++) if (font->glyph_names[i]) + { fprintf (stderr, "glyph: %s\n", font->glyph_names[i]); + if (!strcmp (font->glyph_names[i], "dieresis") + || !strcmp (font->glyph_names[i], "odieresis") || !strcmp (font->glyph_names[i], "o")) + { cairo_type1_font_subset_use_glyph (font, i); + fprintf (stderr, "-----> added\n"); + } + } + /* Go through the charstring of each glyph in use, get the glyph * width and figure out which extra glyphs may be required by the * seac operator (which may cause font->num_glyphs to increase Best regards, Leon