#! /bin/zsh
#
# this file:
#   https://dataswamp.org/~incal/conf/.zsh/transparency
#
# command from:
#   https://unix.stackexchange.com/a/494289

set-transparency () {
    local trans=$1
    local win=${2:-$(win-id)}
    xprop -id $win                              \
          -format _NET_WM_WINDOW_OPACITY 32c    \
          -set    _NET_WM_WINDOW_OPACITY $trans
}

transparent () {
    local trans=${1:-0x7FFFFFFF} # 50%
    set-transparency $trans
}
alias trans=transparent

opaque () {
    set-transparency 0xFFFFFFFF # 0%
}
alias opa=opaque