The left side of the attached picture is a screenshot of an original text on an application and the right side is a screenshot of the output by Ghostscript. Several glyphs have slid downwards. I feel that this phenomenon is obvious in glyphs having relatively large top-side-bearing values, but other glyphs also have slid more or less. I suspect that top-side-bearing values are multiplied somewhere when a CID key based OpenType font is used in vertical writing mode.
Created attachment 7015 [details] Attachment picture Attachement is.
Please attach a test PostScript or PDF file along with any external fonts needed to recreate the problem. You can mark the files as private and only Artifex staff will have access.
Created attachment 7017 [details] SlidGlyphs.pdf Could you tell me how to mark the file as private? I see no checkbox for it in the "Add an attachment" page. The original font file being used in the PDF is big in size (over 7MB.) Would it be no problem to post as an attachment?
Created attachment 7021 [details] Test suite I made a minimal test suite for reproducing the problem.
Looks like we lost track of this one. Assign to font owner.
I'll need the Postcript job from which the PDF file you attached was created - the Word document is no use since I don't have Word. FWIW, using OpenOffice, the resulting GS output matches OpenOffice's display - but it does not match the screen shot you provided.
Created attachment 7086 [details] GS output (Sorry if this attached file is not a job file which you mentioned.)
(In reply to comment #7) > Created an attachment (id=7086) [details] > GS output > > (Sorry if this attached file is not a job file which you mentioned.) That's exactly what I need, thanks. It'll be a week or so before I can look at the problem properly, though. Thanks again.
I noticed that this problem happens even when TTF fonts are used. The attachment is an image showing how four TTF fonts are rendered on a PDF file produced by GS. The most right-hand one is 256 units font, the second is 1000 (the same size as typical OpenType/CID fonts,) and both the third and fourth ones are 2048 units fonts.
Created attachment 7467 [details] TTF fonts example I noticed that this problem happens even when TTF fonts are used. The attachment is an image showing how four TTF fonts are rendered on a PDF file produced by GS. The most right-hand one is 256 units font, the second is 1000 (the same size as typical OpenType/CID fonts,) and both the third and fourth ones are 2048 units fonts.
Created attachment 7468 [details] The PS file that was used to produce the PDF above.
I have looked at the problem a while back - as promised. I have an idea what the problem is, but it is decidedly non-trivial, and I will need to devote some "proper" time to it. Currently, I'm locked into another project, but I will get to it - hopefully......
Thank you for the comment. I am glad that what seems to cause the problem is already found.
Fixed in: http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=f57b7562 Apologies for it taking so long!