68 lines
1.7 KiB
Nix
68 lines
1.7 KiB
Nix
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{ pkgs }:
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pkgs.writeDashBin "font-size-alacritty" ''
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# usage: font-size-alacritty (+N|-N|=N)
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# Increase by, decrease by, or set font size to the value N.
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set -efu
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min_size=8
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op=''${1%%[0-9]*}
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op=''${op:-=}
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value=''${1#[=+-]}
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window_id=$(${pkgs.xdotool}/bin/xdotool getactivewindow)
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current_size=$(
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${pkgs.xorg.xprop}/bin/xprop -notype -id $window_id FONT_SIZE |
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${pkgs.gnused}/bin/sed -rn 's/.* = ([0-9]+)$/\1/p'
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)
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# usage: set_font_size WINDOW_ID FONT_SIZE
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set_font_size() {
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${pkgs.alacritty}/bin/alacritty msg config -w $1 font.size=$2
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${pkgs.xorg.xprop}/bin/xprop -id $1 -f FONT_SIZE 32c -set FONT_SIZE $2
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}
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# usage: reset_font_size WINDOW_ID
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reset_font_size() {
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${pkgs.alacritty}/bin/alacritty msg config -w $1 font.size=$min_size
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${pkgs.xorg.xprop}/bin/xprop -id $1 -remove FONT_SIZE
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}
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# usage: make_next_size
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make_next_size() {
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case $op in
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-) next_size=$(expr $current_size - $value) ;;
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=) next_size=$value ;;
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+)
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next_size=$(expr $current_size + $value)
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test $next_size -ge $min_size || next_size=$min_size
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;;
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esac
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}
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if test -z "$current_size"; then
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current_size=0
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make_next_size
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if test $next_size -ge $min_size; then
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${pkgs.alacritty}/bin/alacritty msg config -w $window_id \
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font.normal.family='Input Mono' \
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font.normal.style=Condensed \
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font.bold.family='Input Mono' \
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font.bold.style=Bold
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set_font_size $window_id $next_size
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fi
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else
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make_next_size
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if test $next_size -ge $min_size; then
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set_font_size $window_id $next_size
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else
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${pkgs.alacritty}/bin/alacritty msg config -w $window_id -r
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reset_font_size $window_id
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fi
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fi
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''
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