Change screens color temperature

[Daniel Stone]

Hi,

On 23 December 2014 at 11:42, Ruben De Smet <ruben.de.smet at telenet.be> wrote:
> I'm a proud Jolla owner and therefore a daily Wayland user. I just
> installed "Redshift", a tool to change the color temperature of your
> screen according to the time of day:
> http://jonls.dk/redshift/
>
> Sadly it's only implemented for Xorg, so I can't "make an app" that uses
> redshift on Jolla.
>
> I asked the guy and according to him, Wayland does not have a native way
> to change the screens temperature.
>
> Some questions: is this true, hasn't wayland got this feature yet? I
> couldn't really find something via Big Brother's search engines on this
> topic.
> Is it difficult to implement?

There is no generic way to implement this, no. The approach would be
to modify the Wayland compositor you're using (which, for SailfishOS,
is based on QtWayland), and add the support there. Then Weston would
also need an additional implementation, and Mutter, etc.

Cheers,
Daniel