display image across multiple screens

[cycomanic]

i3lock would display an image across multiple screens. However swaylock does repeat the same image on all screens. It would be nice to have an option where swaylock displays a single image across both screens, I usually set one large image to stretch both screens.

[d4g]

I am actually having the same issue. I'd also like to have one image to be displayed across multiple screens.

[stratosgear]

While still in plain i3 I would scrot my current monitors, blur the image and then use it as a background in i3lock. If I was on multiple monitors then the blurred image will cover all of them.

scrot /tmp/screenshot.png
convert /tmp/screenshot.png -blur 0x5 /tmp/screenshot.png
# Superimpose Mr.Robot mask logo
composite -gravity center stop.png /tmp/screenshot.png  /tmp/screenshot.png
i3lock -f -i /tmp/screenshot.png && sleep 1

Exchanging scrot with grim and i3lock with swaylock should be ok, but alas swaylock cannot apply the image across the monitors.

[asmigala]

@stratosgear

but alas swaylock cannot apply the image across the monitors.

You can workaround this by enumerating all outputs (swaymsg -t get_outputs), taking a screenshot of each of them (grim -o $output ...) and then calling swaylock with a separate image for each output (swaylock --image=$output:$image ...).

Nonetheless, it would be nice if swaylock could display one image across all outputs (as now you need to run the convert for each image separately)

[singulared]

@stratosgear I think you need something like this: https://gist.github.com/singulared/7c6d53c1b84fbb7cf22d07c5c7d3e945

[stratosgear]

Yes that works great...

Buuut, I had to change the swaymsg -t get_outputs to something like:

swaymsg -t get_outputs | jq -r '.[] | select(.active == true) | .name'

because, when docked, I have the laptop screen deactivated and iterating over all outputs was causing an error.

But overall your script worked out fine, thanks.

Finally, I was able to achieve a faster blur with the corrupter