Add blue light filter to tweaks

[XK9274]

Overview

Menu	Options

Features

• Blue light function to change the colortemp of the screen
• Fades in/out
• Time scheduling
• Selection of strengths/presets

Adds

Menu item to Tweaks -> Appearance -> Blue light filter
cmdline control over BLF through tweaks but should be used with the blue_light.sh script rather than direct control.

blue_light.sh accepts the following:
Usage: $0 {enable|disable|check}

script guards against running too often with:
/tmp/blue_light_script.lock

script will quickly complete depending on the action, will not enable BLF if it's already enabled, etc

Considerations

• Added to 15 second loop area of keymon, there will be +/- 15 seconds after making a change to the time profiles before it actually changes.
• Changes will be live immediately after the time is changed (even if you're still in tweaks)

Options

Colour will gradually change, has 5 preset options:

• Subtle
• Moderate
• Balanced
• Strong
• Intense

[XK9274]

Converting to draft to add an "auto" feature or a "set time" feature for users with NTP support enabled... soon™

[edmunek]

sorry to be a pain but just noticed that using it the "intended way" is not really working.

At home. 23:00. Turned on blue filter, set the schedule that blue light filter will only apply between 22:00 and 08:00.
Next day, arrived to the office, I am not using any network connection so the MMP is offline. As it does not know what time it is (Tweaks>System>Date and time... showing it is still 0:40 am in the middle of the night), the blue filter stays on.

Might be worth mentioning somewhere that the blue filter schedule will only work (apply the schedule) when the console is connected to the internet

[XK9274]

sorry to be a pain but just noticed that using it the "intended way" is not really working.

At home. 23:00. Turned on blue filter, set the schedule that blue light filter will only apply between 22:00 and 08:00.
Next day, arrived to the office, I am not using any network connection so the MMP is offline. As it does not know what time it is (Tweaks>System>Date and time... showing it is still 0:40 am in the middle of the night), the blue filter stays on.

Might be worth mentioning somewhere that the blue filter schedule will only work (apply the schedule) when the console is connected to the internet

Hey, no need to apologise.

Yes this is something that's out of my hands tbh but when I write the documentation I'll make sure to add this in. Thanks!

[edmunek]

Yes this is something that's out of my hands

no stress. that's what the beta tests are for :)

[jepyang]

I’m not sure if this is possible with how the blue light filter currently works, but by way of a feature request: any chance of a red-light only night mode? Like not just the extra-warm setting that is in the beta currently, but fully red-subpixels-only? I know it’ll make some games look seriously funky but I use this mode on my phone when I’ve got insomnia and I’m using it in pitch-black—it both avoids bothering my partner and also doesn’t trick my brain into waking up any more.

would really help me out a lot!
Thank you. (Btw the new night mode is already a great improvement, I appreciate it!)

[XK9274]

I’m not sure if this is possible with how the blue light filter currently works, but by way of a feature request: any chance of a red-light only night mode? Like not just the extra-warm setting that is in the beta currently, but fully red-subpixels-only? I know it’ll make some games look seriously funky but I use this mode on my phone when I’ve got insomnia and I’m using it in pitch-black—it both avoids bothering my partner and also doesn’t trick my brain into waking up any more.

would really help me out a lot!
Thank you. (Btw the new night mode is already a great improvement, I appreciate it!)

Hey hey.

Yeah it would 100% be possible. Are you thinking of say, converting all 5 presets to varied stages of red, or just having one tuned preset that would help you and others be more comfortable late at night?

If you message me on discord we can take a look at some colour values as they'd appear on the screen. _xk_

[jepyang]

Yeah, I think the other modes are great for other situations; I was just thinking of an additional red-only mode for playing in the pitch-black.

thank you very much! I’ll try to send you a ping on discord

[XK9274]

Yeah, I think the other modes are great for other situations; I was just thinking of an additional red-only mode for playing in the pitch-black.

thank you very much! I’ll try to send you a ping on discord

Should be very easy to add if you just want a single red flavour yup. Sure np, catch up with you later then.