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Night Themes - Automation

kosmikk
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Night Themes - Automation

Thu Jan 25, 2018 9:00 am
With all the studies coming out deploring blue light from screens and TV at night and how absolutely destructive this is to our lives, I was wondering if KDE can implement something around this... Not just a 'blue filter' but an actual theme change.

Vivaldi has a rudimentary theme changer, but it's superficial. What I'd like to see is a schedule based complete theme change including web page inversion, and KDE theme change to night themes.

Currently, I go through a manual routine each day to change to a bright KDE theme for work, and back to a dark theme at night...

It would be nice to automate this.

Open to suggestions :-) Happy to even help develop although I am project manager by trade, not a coder. So I can only help organise things, but not actually code beyond some rudimentary stuff... Happy to learn though.

Imagine a universal theme-switcher API that apps like Vivaldi could hook in to too.... To set a universal 'night schedule'...

It's really total BS that so many modern UI's (namely Windows) and web sites have this obsession with white-washing everything and blinding people at night and ruining their sleep.
molecule-eye
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Re: Night Themes - Automation

Sat Jan 27, 2018 4:00 am
Dark text on a white background having a sufficient contrast ratio has been shown to be the most readable, so "white-washing" is actually a good thing, in most circumstances. But like you, at night I prefer a dark theme, so I manually go through the process of changing to a dark look-and-feel. It is VERY easy to do, but it could be made easier by having some sort of look-and-feel widget that allows one to click on it in the panel and select which look-and-feel they want, or have it done automatically at a certain time of day.
ladeir
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Re: Night Themes - Automation

Tue Mar 27, 2018 6:26 pm
I as well would love to see a feature like this. After seeing this post on reddit,
https://www.reddit.com/r/unixporn/comments/5crgng/gnome_when_people_ask_why_i_use_gnulinux/
I was hooked. I find my lovely dark kde setup too dark for daylight work, but the efforts to switch to a brighter lookandfeel currently outweighs the problem. Too much mousing and clicking in systemsettings5. I know from the plasma-sdk package a tool called Plasma Look And Feel Explorer which is aiming to ease the changing of themes, but I cannot get it to work, as all the buttons and such is grayed out and I get the error message 'Impossible to create the layouts directory in the look and feel package' when trying to create a new look and feel scheme.
reaperx3
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Re: Night Themes - Automation

Sat Dec 15, 2018 2:55 am
Just wanted to add my 2 cents of support for this suggestion. I also prefer light themes during the day time, but dark themes in the evening. I use redshift, but even then at night, I find white backgrounds with dark text irritating on the eyes. It would be absolutely wonderful if there was a system wide, one-click or scheduled switch between light and dark themes which also switches applications, especially the web browser.
cvalerio
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Re: Night Themes - Automation

Sat May 25, 2019 4:01 am
I was reading this post https://medium.com/elementaryos/the-need-for-a-freedesktop-dark-style-preference-614f501ae4ca, supporting this idea and providing some data, I think is something that can be seen mostly as an accessibility preference. I use redshift also, but this can become a really nice feature.

 
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