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#1 |
Groupie
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Karma: 131606
Join Date: Oct 2011
Location: Germany (south-west)
Device: Kobo Libra 2 & Clara 2E, Tolino shine 5th Gen
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Problem with fractional scaling
I'm running GNOME with fractional scaling (150%) on a HiDPI display. The Calibre UI looks very good here, except the ebook-viewer. It opens ebooks initially too small (not fitting the the window size) which can be fixed my resizing the window slightly. But besides that, the fonts (both, of the e-book and the viewer-ui) look coarse and washed-out.
With a scaling of 100% or 200%, everything looks ok. Is there anything I can do about it? I wonder why it happens only in ebook-viewer. (Running the official binary install (calibre 7.3) on Fedora Linux 39) Last edited by beedaddy; 01-19-2024 at 02:49 AM. |
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#2 |
creator of calibre
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Karma: 23446430
Join Date: Oct 2006
Location: Mumbai, India
Device: Various
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because only the viewer uses qt webengine and no nothing you can do about it.
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#3 |
Connoisseur
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Karma: 2485318
Join Date: Jun 2018
Location: Sweden
Device: Kobo Clara
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I use KDE rather than GNOME, but I had a similar problem. Setting the environment varaible
Code:
QT_SCALE_FACTOR_ROUNDING_POLICY=RoundPreferFloor |
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#4 |
Junior Member
![]() Posts: 3
Karma: 10
Join Date: Mar 2024
Device: none
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Hello,
Thank you for this forum ! I'm using ebook-viewer (v.5.37 - 02-2022) on an ubuntu-linux laptop and I don't know how to change the font size. Is this possible? |
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#5 |
Resident Curmudgeon
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Karma: 134254544
Join Date: Nov 2006
Location: Roslindale, Massachusetts
Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3
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#6 | |
Well trained by Cats
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Karma: 57979022
Join Date: Aug 2009
Location: The Central Coast of California
Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A
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Quote:
The settings menus are under the book. You can tick the setting to pin the toolbar while reading. Why so old a Calibre? Is your laptop 32bit? |
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#7 |
Resident Curmudgeon
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 75,540
Karma: 134254544
Join Date: Nov 2006
Location: Roslindale, Massachusetts
Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3
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It can be difficult to support an old version of calibre especially if any of the settings you'd need to adjust have changed in since then. So it's best to keep updated if you can.
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#8 |
Junior Member
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Karma: 10
Join Date: Mar 2024
Device: none
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Thank you very much for your quick and valuable advice!
I'm using this old version of calibre because this laptop is my work laptop with a safe and old ubuntu LongTermSupport version. So I will try to install a more recent version of calibre (on this old ubuntu). Have a nice day! F. |
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#9 |
Junior Member
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Karma: 10
Join Date: Mar 2024
Device: none
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And oups !
Thanks TheDucks, I've just discovered the magic "esc" key and how to resize the font. |
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#10 |
null operator (he/him)
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Karma: 27405122
Join Date: Mar 2012
Location: Sydney Australia
Device: none
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The Ctrl+F11 key sequence will hide/show the toolbar, by default it has the icons to change font size.
BR |
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Thread | Thread Starter | Forum | Replies | Last Post |
Fractional Page Numbering | j.p.s | General Discussions | 83 | 11-17-2019 12:31 PM |
UI Scaling 4K | khashyarkh | Calibre | 2 | 10-21-2016 06:29 AM |
Fractional Stars needed... | RsH | Library Management | 0 | 09-13-2011 07:50 PM |
problem scaling images | paola | ePub | 11 | 05-12-2011 02:20 AM |
scaling pdfs | davec67 | Sony Reader | 4 | 10-01-2006 08:07 AM |