Ubuntu - dynamic background
It should've been easy but it wasn't. To setup a dynamic background, i.e. one that wallpaper between light and dark modes, you need:
- Two different wallpapers (duh!)
- Locate where to put a config
- Write a config into an xml file
Assuming you have light.jpeg
and dark.jpeg
files in dir /home/user/wallpapers
.
Create an xml file, e.g. called my_dynamic_wallpaper.xml
with the following content
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE wallpapers SYSTEM "gnome-wp-list.dtd">
<wallpapers>
<wallpaper deleted="false">
<name>My Dynamic Content</name>
<filename>/home/user/wallpapers/light.jpeg</filename>
<filename-dark>/home/user/wallpapers/dark.jpeg</filename-dark>
<options>scaled</options>
</wallpaper>
</wallpapers>
That xml file should go either to /usr/share/gnome-background-properties
(requires sudo) or ~/.local/share/gnome-background-properties
.
Internet claims different locations, e.g. ~/.local/share/backgrounds
.
For me, they didn't work. If they don't work for you, manually add an image as a Background, e.g. right click on image and "Set as Background..." and check where it was added.
The image should be copied over to some location with name being {dateISO}-{filename}.{fileextension}
.