Setting Emacs theme based on ambient light • Hacker News Board

Re: Setting Emacs theme based on ambient light

#21

Post by tobyhinloopen » Wed, Apr 11, 2018, 1:25 PM UTC

TwistedWave wrote: post #20

auxym wrote: post #3

I've had this in my vimrc for a little while: let hr = (strftime('%H')) if hr >= 17 set background=dark elseif hr >= 7 set background=light elseif hr >= 0 set background=dark endif Using a light sensor would be cool, but I actually work from a desktop PC most of the time, so no sensor. I guess the next best thing would be something like f.lux does: query some web service for the sunset time at your current location.

It is possible to purchase a small USB lux meter: http://www.yoctopuce.com/EN/products/usb-environmental-senso... I use one to automatically adjust the brightness of my Dell display.

what display and how do you control your display from your PC?

Re: Setting Emacs theme based on ambient light

#22

Post by w0m » Wed, Apr 11, 2018, 2:46 PM UTC

avcdsuia wrote: post #17

That's why we need OLED displays to save our eyes. With OLED's pixels actually produce their own light and dark pixels are just not glowing pixels, pure dark background still provide maximum contrast on sunny days.

always-dark is the answer :)

Re: Setting Emacs theme based on ambient light

#23

Post by newusertoday » Wed, Apr 11, 2018, 3:06 PM UTC

Off-topic, is there a way to control chrome/firefox through emacs or elisp? something similar to https://github.com/ChromeDevTools/awesome-chrome-devtools#ch....

Re: Setting Emacs theme based on ambient light

#24

Post by rotorblade » Wed, Apr 11, 2018, 3:12 PM UTC

Scarbutt wrote: post #6

is the background color really the problem? I though screen brightness was a more issue, for example: continue using your light theme but lower down the brightness, most of your websites are going to be white backgrounds, switch between dark and light background frequently strains more the eyes, looking for the link where I read this.

I use the browser extension 'dark background light text' [1] for that reason. Works OK, far from perfect, but helps quite a bit.

[1] https://github.com/m-khvoinitsky/dark-background-light-text-...

Re: Setting Emacs theme based on ambient light

#25

Post by atheriel » Wed, Apr 11, 2018, 3:15 PM UTC

This is really neat, but I'm wondering if you are better off triggering the change by sending SIGUSR1 to the Emacs process [0]. This would remove the need to run the function in a timer every 1s.

[0]:https://www.gnu.org/software/emacs/manual/html_node/elisp/Mi...

Re: Setting Emacs theme based on ambient light

#26

Post by TwistedWave » Wed, Apr 11, 2018, 4:44 PM UTC

tobyhinloopen wrote: post #21

TwistedWave wrote: post #20

Earlier quoted context omitted.

It is possible to purchase a small USB lux meter: http://www.yoctopuce.com/EN/products/usb-environmental-senso... I use one to automatically adjust the brightness of my Dell display.

what display and how do you control your display from your PC?

I have a Dell P4317Q, a great 43 inch display, and control it from my Mac with ddcctl: https://github.com/kfix/ddcctl

Re: Setting Emacs theme based on ambient light

#27

Post by saagarjha » Wed, Apr 11, 2018, 7:46 PM UTC

I have something similar, except it's based on sunrise/sunset. It hooks into my Mac's Night Shift timer to also enable dark mode and a darker color scheme in all my text editors when it's getting close to sunset, and undo it when the sun rises.