monitor-setup: Support resolution and refresh rate

Also place multiple monitors side-by-side.

.local/bin/monitor-setup

@@ -1,13 +1,7 @@
 #!/usr/bin/env bash
-
-################################################################################
 #
-# Small script using `xrandr` and `fzf` to quickly select connected monitors.
-#
-# TODO:
-#       - Add possibility to not only mirror onto all outputs but use the total
-#         screen space.
-################################################################################
+# monitor setup script using xrandr and fzf to manage multiple monitors and/or
+# set resolutions and refresh rates.
 
 command -v xrandr &>/dev/null || exit 1
 command -v fzf &>/dev/null || exit 1
@@ -62,9 +56,51 @@ primary="$(<<<"$formatted" \
 # Build the `xrandr` command
 xrandr_cmd=(xrandr)
 
+# Keep track of width to place the outputs side-by-side
+width=0
+
 for out in "${selected[@]}"; do
-	xrandr_cmd+=(--output "$out" --rotate normal --auto)
+	xrandr_cmd+=(--output "$out" --rotate normal)
 	[[ $out != $primary ]] || xrandr_cmd+=(--primary)
+
+	all_res="$(<<<"$xrandr_q" sed -En "
+		# all resolution lines for selected output (+ junk lines first and last)
+		/$out/,/^[^ ]/ {
+			# on lines that contain a resolution
+			/^ / {
+				# only print the resolution
+				s/^ *([^ ]*).*/\1/p
+			}
+		}"
+	)"
+	res="$(<<<"$all_res" fzf --cycle --header "Select resolution for $out")"
+	[[ $res ]] || exit 1
+
+	xrandr_cmd+=(--mode "$res")
+
+	rates="$(<<<"$xrandr_q" sed -En "
+		# all resolution lines for selected output
+		/$out/,/^[^ ]/ {
+			# on line with the selected resolution
+			/^ *$res/ {
+				# remove resolution and whitespace
+				s/^ *$res *//
+				# fix formatting when preferred mode is not the current one
+				s/ \+/+/
+				# put each rate on a new line
+				s/ +/\n/g
+
+				p
+			}
+		}"
+	)"
+	rate="$(<<<"$rates" fzf --cycle --header "Select refresh rate for $out")"
+	[[ $rate ]] || exit 1
+	rate="${rate%%[*+]*}" # remove current and preferred mode indicator
+	xrandr_cmd+=(--rate "$rate")
+
+	xrandr_cmd+=(--pos "${width}x0")
+	: "$((width+=${res%%x*}))"
 done
 
 for out in "${non_selected[@]}"; do