A screensaver for Raspberry Pi that shows temperature with updates to a tutorial from liberato. The tutorial from liberato also seems to work in WSL/BashOnWindows, if you install an X-server.
Open Bash and install packages:
$ sudo apt-get install xscreensaver libxpm-dev xfonts-100dpi
If you use WSL you might skip xfonts-100dpi because it doesn't help xfontsel since the X-server is external.
Clone this repository:
$ git clone https://github.com/mobluse/xscreensaver
Run in the folder whose screensavers you want to use:
$ ./rebuild.sh
$ ./install.sh
Run:
$ xscreensaver-demo
or run it from start menu: Preferences/Screensaver
Look up your screensavers and preview. It doesn't work to just run the screensaver program because then it uses an
invisible screen.
This screensaver shows the CPU-temperature and it is red when increasing, green when unchanged, and blue when sinking, compared to
the previous second. The temperature shifts position each second. This screensaver doesn't work in WSL since it doesn't have the
device at the same place.
How to measure CPU-temperature with a Raspberry Pi from the C programming language:
https://www.raspberrypi.org/forums/viewtopic.php?f=33&t=170112
The other screensavers does work in WSL except for those using text, since VcXsrv doesn't have all the fonts, but one can change font to an existing, manually in the source code. (VcXsrv has only two fonts. Check which by running xfontsel. There is a yet unanswered question about how to add fonts to VcXsrv, see https://superuser.com/questions/1192339/how-to-add-fonts-to-vcxsrv-x-server.)
See http://www.dis.uniroma1.it/~liberato/screensaver/.
XScreensaver exists for X11 (e.g. Linux), Mac OS X, iOS, Android.
There are some problems with the tutorial, but I have figured out how to compile and run, see shell scripts:
https://stackoverflow.com/questions/11686699/hints-and-tips-for-writing-a-screensaver-using-xscreensaver