devPixelsPerPx scales system fonts too much on HiDPI
Categories
(Core :: Widget: Gtk, defect)
Tracking
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| Tracking | Status | |
|---|---|---|
| firefox-esr91 | --- | unaffected |
| firefox-esr102 | --- | unaffected |
| firefox102 | --- | unaffected |
| firefox103 | --- | fixed |
People
(Reporter: krzysztof.krason, Assigned: emilio)
References
(Regression)
Details
(Keywords: regression)
Attachments
(3 files)
2022-06-11-142557_3840x2400_scrot.png
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.63 Safari/537.36
Steps to reproduce:
HiDPI screen, xrandr set to --scale 1.5x1.5, layout.css.devPixelsPerPx to 1.5. Everything looks like it should. Firefox Nightly somewhere before Jun 9.
Update to latest Firefox Nightly (both two last versions have this issue, but with different proportions), currently 103.0a1 (2022-06-11).
Actual results:
Have text, icons, tabs of gigantic proportions.
Expected results:
Size of text, icons, tabs should remain as it was before.
Using layout.css.devPixelsPerPx I can get the page to display correctly, but tabs are ridiculusly large compared to icons that are in them. Also context menu has text that is still gigantic.
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Reporter | |
Comment 1•2 years ago
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Also the menu, autocomplete and URL bar have fonts that are way to big (I mean 2-3x times bigger than normal)
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Reporter | |
Comment 2•2 years ago
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Updated•2 years ago
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Assignee | |
Comment 3•2 years ago
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Is it better on the very latest nightly? What is the behavior if you don't change devPixelsPerPx?
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Assignee | |
Updated•2 years ago
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Assignee | |
Comment 4•2 years ago
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Also, what desktop environment and so?
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Reporter | |
Comment 5•2 years ago
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Window Manager: xmonad.
- I tried with latest nightly (todays) and it was the same.
- Reverted devPixelsPerPx to default, and everything was even bigger (literally 90% of screen was for context menu).
- Restarted: everything works perfectly, no more big icons/text/context menu.
Thank you very much, it works like before :)
I'll close it as duplicate of https://bugzilla.mozilla.org/show_bug.cgi?id=1773633.
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Assignee | |
Comment 6•2 years ago
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Ok, I'll double check the behavior with devPixelsPerPx just in case there's something to fix there, since some people will maybe use it, but glad to hear that with default settings stuff works as expected, thanks!
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Assignee | |
Updated•2 years ago
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Assignee | |
Comment 7•2 years ago
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LookAndFeel::GetFont should always return CSS font sizes.
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Updated•2 years ago
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Comment 9•2 years ago
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| bugherder | ||
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Updated•2 years ago
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Comment 10•2 years ago
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As of https://hg.mozilla.org/mozilla-central/rev/6e1cbabce0af, the meaning of devPixelsPerPx changed to something like dpi-scaled device pixels per CSS pixel. The old behavior could be somewhat restored by dividing the old devPixelsPerPx value by dpi/96.0, but text that should have been system font size was as if the system dpi scale factor was applied twice if devPixelsPerPx was any +ve value.
A workaround was to create a "ui.textScaleFactor" pref set to the number 100, with which devPixelsPerPx meaning was restored to device pixels per CSS pixel and system font text was rendered at system font sizes.
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Updated•2 years ago
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Comment 11•2 years ago
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Set release status flags based on info from the regressing bug 1773342
Description
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