[1.26.0] Max zoom 85, even for 100 or 125% on dropdown, or [1] (100%) icon.

[SimonDedman]

Expected behaviour

Be able to zoom to whatever the max zoom is (400%?) with ctrl+mousewheel, and/or respect zoom dropdown, and 100% icon, commands.

Actual behaviour

Zoom maxes out at 85%. Selecting 100 or 125% on the dropdown doesn't increase the Zoom, but does remain on the selected zoom level, which is incorrect. Having selected 125% on the dropdown, hitting [1] (reset zoom to 100% button) changes zoom back to 85%.

Steps to reproduce the behaviour

Maybe this is document-specific but zoom past 85% works on a different PDF program.
PDF: https://charts.noaa.gov/PDFs/4149.pdf

MATE general version

Xubuntu 22.10

Package version

Atril 1.26.0

Linux Distribution

Xubuntu 22.10

Link to bugreport of your Distribution (requirement)

No posted to distro bugreps, posted here directly.

[lukefromdc]

I found on my system that zoom maxed out at different levels on different documents usually at 200 or 300%, no idea what controls that. It's not font rendering size, I saw 200% with several files w different size font, seemed to be the most common but I also saw 300%

[SimonDedman]

Cheers Luke. Out of interest, what was your max zoom on that linked PDF above?

[lukefromdc]

Showed a maximum of 125 available in the zoom combobox, default of 50%, and would not zoom at all. Large file and very slow to load so maybe unresponsive to rather than refusing a zoom attempt? Then I found "fit page" and "fit width" would work, and it would then zoom to 50% or 75% if "fit width" was the last selected value. This on a 4K monitor w 16GB of RAM btw.

[akshaykhoje]

Since this issue is unresolved, I am facing similar issue on my Debian11 Bullseye MATE machine.

The maximum zoom that I am able to do is 300% for any document. However, the max zoom-limit as shown in the zoom options is 400%.

No changes after clicking on 400% are seen. It remains the same as it would for 300%.

OS : Debian 11 Bullseye
DE : MATE 1.24.1
Atril version : 1.24.0-1

[dumblob]

I am facing a similar issue as @akshaykhoje . Namely if I zoom using + the highest zoom I get is equivalent to "fit page width". Same goes for clicking on any higher zoom level (e.g. 400%) in the drop down menu. It simply does not change the zoom (but changes the number in the drop down menu).

Funnily enough, repeatedly pressing - brings me to a much lower (about 5 zoom levels lower) zoom than the lowest zoom from the drop down menu (which is 50%).

Note I have tested this on a 4k screen with these environment variables:

export QT_AUTO_SCREEN_SCALE_FACTOR=1
export QT_FONT_DPI=370
export QT_QPA_PLATFORMTHEME=qt5ct

(yes, these refer to QT but nowadays one never knows if GTK does not try to use this information too somehow 😉)

[lukefromdc]

QT environmental variables should be entirely ignored by GTK as far as I know

[ccazabon]

FWIW, I'm also experiencing this issue. With the map downloaded from this public website:
https://www.regina.ca/export/sites/Regina.ca/about-regina/regina-history-facts/.galleries/pdfs/Tourist_Map_2024_January.pdf

... I can't get the zoom higher than 70%. The zoom drop-down shows values up to 85%, nothing higher, but 85% doesn't work - it just shows the same as the 70% zoom.

The "Zoom In" menu item is disabled/deactivated whether the zoom is currently set to 70% or 85%. If I drop to 50%, the "zoom in" item is re-enabled until I zoom to 70% or higher.

I've tried expanding the window significantly to see if it is something like equivalent to fit-width, but it appears to make no difference for me.

Happy to help diagnose if there are info-collection steps you'd like me to take.

[lukefromdc]

Unfortunately I don't know enough about Atril's internal code to help with that, leaving it for others on the team to work on but I usually try to at least get some information for them to work with, as in this case.