SwayOSD type of thing for Caps Lock

[CrumblyLiquid]

When I was searching for something to display Lock keys status, etc. I stumbled upon SwayOSD. But it lacked customizability so I made my own! I would like to make something similar for both volume and brightness if possible in the future.

I use 2 scripts:

• One to get Caps Lock status

#!/bin/bash
# Returns the status of any key with a status light

KEY=$1

# Basically OR all status lights
# Keyboard lights aren't managed by the keyboard but
# there might be some bugs regarding syncing the lights
# between multiple keyboards
ON=0
while read line
do
    if [ $line = "1" ]; then
        ON=1
        # We can exit early since when even one status light is on
        # the key must be enabled (hopefully :D)
        break
    fi
done < <(cat /sys/class/leds/input*::$KEY/brightness)
echo $ON

• And a second one that is bound to execute whenever I press Caps Lock

#!/bin/bash
# SwayOSD type of thing for Caps Lock

# We update internal eww variable each time Caps Lock is pressed
# Then we close the window when Caps Lock hasn't been pressed for some time
NOW=$(date +%s)
eww update caps_time=$NOW
# Make OSD fade in when Caps Lock is pressed
eww update caps_osd_open=true

# Open window if it isn't open yet
if ! [[ $(eww windows | grep '^\*caps$') ]]; then
    eww open caps

    # Wait until enough time has passed from last Caps Lock press
    # and then fade out and close the window
    while [ 1 ]
    do
        sleep 1
        TIME=$(eww get caps_time)
        NOW=$(date +%s)
        # Then close the window
        if [[ $NOW > $(($TIME + 2)) ]]; then
            eww close caps
            break
        fi
        # First fade out (happens first because $TIME + only 1 second -> 
        # fade out after one second since last keypress)
        if [[ $NOW > $(($TIME + 1)) ]]; then
            eww update caps_osd_open=false
        fi
    done
fi

And here are the standard eww.yuck and eww.scss files:

;; Fade in/out the OSD
(defvar caps_osd_open false)
;; Time of the last Caps Lock keypress
(defvar caps_time 0)
;; I couldn't find a way to monitor /sys filesystem so I just poll it regularly
(defpoll caps_on
    :initial false
    :run-while caps_osd_open
    :interval "100ms"
    `scripts/key-status capslock`
)

(defwidget caps_osd []
    ;; Revealer is used to nicely fade the OSD in and out
    (revealer
        :transition "crossfade"
        :reveal caps_osd_open
        :duration "1000ms"
        (box
            :class "caps_osd"
            :orientation "h"
            :space-evenly false
            :spacing 20
            :halign "center"
            (label
                ;; This is supposed to be nf-md-keyboard (f030c)
                ;; that is part of the Nerd Fonts pathes
                :text "󰌌"
                :class "caps_icon"
                :limit-width 2
                :show-truncated false
                :wrap false
            )
            (label
                :text {caps_on == "1" ? "caps lock on" : "caps lock off"}
            )
        )
    )
)

;; This window definition is specific to Wayland (Hyprland)
;; and may need adjusting to X11
(defwindow caps
    :monitor 0
    :geometry (geometry
        :x "50%"
        :y "50%"
        :width "10%"
        :height "4%"
        :anchor "center"
    )
    :stacking "fg"
    :focusable false
    (caps_osd)
)

* {
    all: unset;
}

.caps_osd {
    border-radius: 20px;
    background-color: #CDD6F4;
    color: #1E1E2E;
    font-size: 24px;
    padding: 0px 15px 0px 15px;
}

.caps_icon {
    font-size: 40px;
}