turning off dark mode

[marinheiro]

I have a vision problem (temporary I hope) which is making it hard for me to read on a computer and almost impossible in dark mode. I am using Calibre 5.43.0 running on Manjaro Linux, and it is in dark mode. I can't find a way to rurn dark mode off - I've looked in Preferences/Look and Feel and can't see anything, but I could easily be missing it. Or maybe its fixed by Manjaro? (I generally only use the most basic functions of calibre, don't know how to set up my own themes, etc - I'm hoping for a simple 'off' switch somewhere)

Any advice?

Graham

[kovidgoyal]

calibre will follow your system color preferences. Or you can use an environment variable to control it. https://manual.calibre-ebook.com/cus...ment-variables

[marinheiro]

Manjaro (I'm using the XFCE graphical environment) doesn't seem to have a single setting to turn dark mode on and off (and no other application I'm running is defaulting to dark mode).

I've tried setting the environment variable 'live' ie.

export CALIBRE_USE_DARK_PALETTE=0 && calibre

and putting it in my .bashrc. printenv shows USE_DARK_PALETTE is set to zero, but Calibre still starts up in dark mode.

Graham.

[dunhill]

Originally Posted by marinheiro

Manjaro (I'm using the XFCE graphical environment) doesn't seem to have a single setting to turn dark mode on and off (and no other application I'm running is defaulting to dark mode).

I've tried setting the environment variable 'live' ie.



and putting it in my .bashrc. printenv shows USE_DARK_PALETTE is set to zero, but Calibre still starts up in dark mode.

Graham.

You can create two shortcuts to calibre one for dark mode and one for light in the shortcut in properties write this:
caliber --detach %U

[kovidgoyal]

Putting it in your bashrc is pointless, as ashrc is not sourced when launching applications via whatever GUI you use. You need to put it somewhere systemwide, where exactly depends on your distro, typically something like /etc/environment or /etc/profile or similar.

[marinheiro]

Well, I was setting it in bashrc and then calling Calibre from an xterm, so I thought it should have worked.

Regardless, I removed the setting from .bashrc and put it in /etc/environment. Printenv shows

CALIBRE_USE_DARK_PALETTE=0

but however I start Calibre it still comes up with dark background and light fonts. I tried running in debug mode, which shows up two errors, but I don't know if they are relevant::

alibre Debug log
calibre 5.43 embedded-python: False is64bit: True
Linux-5.15.48-1-MANJARO-x86_64-with-glibc2.35 Linux ('64bit', 'ELF')
('Linux', '5.15.48-1-MANJARO', '#1 SMP PREEMPT Thu Jun 16 12:33:56 UTC 2022')
Python 3.10.5
Interface language: en_GB
calibre 5.43 embedded-python: False is64bit: True
Linux-5.15.48-1-MANJARO-x86_64-with-glibc2.35 Linux ('64bit', 'ELF')
('Linux', '5.15.48-1-MANJARO', '#1 SMP PREEMPT Thu Jun 16 12:33:56 UTC 2022')
Python 3.10.5
Interface language: en_GB
Not controlling automatic hidpi scaling
devicePixelRatio: 1.0
logicalDpi: 96.0 x 96.0
physicalDpi: 127.59069767441859 x 127.92124352331606
Using calibre Qt style: True
Failed to read metadata from font file: /usr/share/fonts/TTF/TSCu_Comic.ttf tuple index out of range
Failed to read metadata from font file: /usr/share/fonts/TTF/TSCu_Times.ttf tuple index out of range
[0.00] Starting up...
[0.01] Showing splash screen...
[0.06] splash screen shown
[0.06] Initializing db...
[0.10] db initialized
[0.10] Constructing main UI...
[0.82] main UI initialized...
[0.82] Hiding splash screen
Starting QuickView
qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 900, resource id: 10566932, major code: 40 (TranslateCoords), minor code: 0
[3.47] splash screen hidden
[3.47] Started up in 3.47 seconds with 1322 books

Graham

[kovidgoyal]

If it is still in dark mode then your system is using a qt theme set to dark mode.

[JDesat]

Stupid question... I've had my laptop set to dark mode ever since it was an option, but Calibre was still in light mode until I installed v6.1 a few minutes ago. From what I've read it should have been in dark mode since the system has been the whole time and I have no clue why it wasn't, but in any case. I want the system in dark mode and I want Calibre in light mode. I've read about the environment variables edit I can make, but it didn't seem to do anything when I tried it, so now we're at the stupid question:
Do I need to restart the computer after setting the variable for it to work? Or should it work immediately?

[chaley]

Originally Posted by JDesat

Stupid question... I've had my laptop set to dark mode ever since it was an option, but Calibre was still in light mode until I installed v6.1 a few minutes ago. From what I've read it should have been in dark mode since the system has been the whole time and I have no clue why it wasn't, but in any case. I want the system in dark mode and I want Calibre in light mode. I've read about the environment variables edit I can make, but it didn't seem to do anything when I tried it, so now we're at the stupid question:
Do I need to restart the computer after setting the variable for it to work? Or should it work immediately?

The environment variables are no longer used. In calibre, go to Preferences / Look & feel / Main interface, set the Color Palette to light, then restart calibre.