Created attachment 90540 [details]
apex seems to be a low-point for font rendering
This was observed on Ubuntu Gnome 13.10. The Kerning is off when the editor is displaying justified text. It is mighty distracting.
I can't reproduce this behavior using 18.104.22.168 under Ubuntu 13.10.
Are you sure that you have 'Times New Roman' actually installed on your system? How does it appear in the font drop-down box - As a regular text or as Italic? Does it appear in the font list of other applications? How does the same text look in other applications?
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I can reproduce this on Fedora 20 with LibreOffice 22.214.171.124. Kerning is problematic for particular letter pairs. Disabling pair kerning has no effect. The kerning for the same examples is superior with Abiword 3.0.0 and Calligra Words 2.8.5. (And yes, I have the MS Times New Roman faces installed.) I'll attach screen shots demonstrating the differences.
(I'm not sure if this is related to bug 61646 somehow.)
Created attachment 103979 [details]
Abiword's rendering of select words
Created attachment 103980 [details]
Calligra Words's rendering of select words
Created attachment 103981 [details]
LibreOffice Writer's rendering of select words
Note with the screenshot I've submitted of LibreOffice Writer's rendering, in "Yeah" the E and the A are too close together, in "Ted" the E and the D are too close together, and in "survive" the R is joined to the V. In Abiword and Calligra Words the kerning is more appropriate.
Marking as new, given I can duplicate the original reporter's issue.
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This is still an issue with LibreOffice 188.8.131.52, which is the most current version available via the Fedora Project for Fedora 22. (It should also count as a "currently supported version"...)
Confirming this is still an issue with LibreOffice 184.108.40.206.
I can confirm this behaviour on Ubuntu 16.04 (64 Bit) and LO 220.127.116.11. I see the same results when I take the MS Times-Font from the "ttf-mscorefonts-installer" Ubuntu multiverse package. However, if I copy the .ttf-Files from Windows 7 over to Ubuntu, the results are much better. But still not as good as the Windows built of LO. Best, Siggi.
Can someone attach a test file showing the issue?
Created attachment 128123 [details]
"apex" issue test ODT file
File created with:
Build ID: 1:5.1.5~rc2-0ubuntu1~trusty1
CPU Threads: 2; OS Version: Linux 3.13; UI Render: default;
Locale: de-DE (en_GB.UTF-8); Calc: group
This report seems to mix two independent issues:
1. The "apex" issue in the original report: The distance between the letters "p" and "e" depends on the font size and zoom. Probably not really a "kerning" issue, but depending on bug 103322.
2. The lack of kerning at any size and zoom level in later comments: Can be observed with letter combinations like "Ye", "Te", "Ve", etc. This probably needs to be reported separately.
I can reproduce the kerning (Ted, Yeah) with the version of Times New Roman shipped with Windows XP but not in the newer versions shipped with Windows 8 or 10. It seems the old versions of the font have an old-style kern table, while the new versions have GPOS pair positioning. The new layout engine of bug 89870 does not even support old-style kern tables.
But I can not reproduce the apex issue, it might be because I use a hidpi display, and it might indeed be the same as bug 103322. Either case they are different issues and each should be reported separately.
(In reply to Khaled Hosny from comment #15)
> I can reproduce the kerning (Ted, Yeah) with the version of Times New Roman
> shipped with Windows XP but not in the newer versions shipped with Windows 8
> or 10. It seems the old versions of the font have an old-style kern table,
> while the new versions have GPOS pair positioning. The new layout engine of
> bug 89870 does not even support old-style kern tables.
Right, and the Linux packages (e.g., ttf-mscorefonts-installer on Ubuntu, with fonts pulled from http://corefonts.sourceforge.net) contain the old XP version, as explained in https://en.wikipedia.org/wiki/Core_fonts_for_the_Web#Program_termination_and_software_licence_agreement_issues
Thanks for clarification! The metrically compatible Liberation Serif font does look better.
> But I can not reproduce the apex issue, it might be because I use a hidpi
> display, and it might indeed be the same as bug 103322. Either case they are
> different issues and each should be reported separately.
It my case it is an older 19", 1280 x 1024 screen. The definition of low-resolution. :) Liberation Serif shows the issue similarly to the Times New Roman here. As do various other fonts, too, to various degree.
(In reply to Johnny_M from comment #16)
> It my case it is an older 19", 1280 x 1024 screen. The definition of
> low-resolution. :) Liberation Serif shows the issue similarly to the Times
> New Roman here. As do various other fonts, too, to various degree.
I also see similar kerning issues with Liberation Serif on Fedora, though generally they're not quite as pronounced as with Times New Roman. In both cases, I'm using the older versions of the fonts, since the MS-TTF "distribution" is of the older Times New Roman, and Fedora ships Liberation v. 1 rather than v. 2 fonts. (I'm told version 2 of the latter offers better rendering.)