Set Color Temperature utility enhanced

I posted about the Dcontrol app now builtin to Easy:

• New Dcontrol PET — December 24, 2024

The problem, though, is it requires an enhanced 'sct' utility, whereas Easy has an older version of 'sct'. Roger (radky) sent me a message; reproducing part of it:

If I understand correctly you are using a modified version of a Dcontrol-EasyOS-2.1.pet provided by forum member Sofiya. Based on timestamps it seems the dcontrol files in this pet were extracted from the current JWMDesk-3.6. Apparently, the only modified file is the main dcontrol file and the only change is the increase in version from 1.4 to 2.1.

...

If I understand correctly, you will use the sct binary already included in EasyOS. I don't know the source of that binary but you might consider the following excerpt from the JWMdesk release notes:

Note-3: The original release of the sct utility by Ted Unangst has a singular function - to change the screen color temperature via the RandR X window system protocol. However, Display Control requires an updated version of sct (with code from the mgudemann, faf0 and mfachal forks). Specifically, this updated version of sct adds (1) screen brightness control and (2) multi-monitor support and (3) baseline adjustment of color temperatures in smooth 100K increments rather than the original coarse 500K increments.

Importantly, the enhanced sct binary of dcontrol supports a single command line for simultaneous software modulation of screen brightness and color temperature. This is independent of the hardware backlight option of dcontrol.

Roger also sent me a link that explains the concept of color temperature:

https://forum.puppylinux.com/viewtopic.php?p=89052#p89052

I have uploaded Roger's enhanced sct source here:

https://distro.ibiblio.org/easyos/source/alphabetical/s/

Also, compiled the new sct for both Scarthgap and Daedalus and created PETs. These will be in the next releases, and Dcontrol will then work properly.    

Tags: easy