displayselect (3614B)
1 #!/bin/sh 2 3 # A UI for detecting and selecting all displays. Probes xrandr for connected 4 # displays and lets user select one to use. User may also select "manual 5 # selection" which opens arandr. 6 7 twoscreen() { # If multi-monitor is selected and there are two screens. 8 9 mirror=$(printf "no\\nyes" | dmenu -i -p "Mirror displays?") 10 # Mirror displays using native resolution of external display and a scaled 11 # version for the internal display 12 if [ "$mirror" = "yes" ]; then 13 external=$(echo "$screens" | dmenu -i -p "Optimize resolution for:") 14 internal=$(echo "$screens" | grep -v "$external") 15 16 res_external=$(xrandr --query | sed -n "/^$external/,/\+/p" | \ 17 tail -n 1 | awk '{print $1}') 18 res_internal=$(xrandr --query | sed -n "/^$internal/,/\+/p" | \ 19 tail -n 1 | awk '{print $1}') 20 21 res_ext_x=$(echo "$res_external" | sed 's/x.*//') 22 res_ext_y=$(echo "$res_external" | sed 's/.*x//') 23 res_int_x=$(echo "$res_internal" | sed 's/x.*//') 24 res_int_y=$(echo "$res_internal" | sed 's/.*x//') 25 26 scale_x=$(echo "$res_ext_x / $res_int_x" | bc -l) 27 scale_y=$(echo "$res_ext_y / $res_int_y" | bc -l) 28 29 xrandr --output "$external" --auto --scale 1.0x1.0 \ 30 --output "$internal" --auto --same-as "$external" \ 31 --scale "$scale_x"x"$scale_y" 32 else 33 34 primary=$(echo "$screens" | dmenu -i -p "Select primary display:") 35 secondary=$(echo "$screens" | grep -v ^"$primary"$) 36 direction=$(printf "left\\nright" | dmenu -i -p "What side of $primary should $secondary be on?") 37 xrandr --output "$primary" --auto --scale 1.0x1.0 --output "$secondary" --"$direction"-of "$primary" --auto --scale 1.0x1.0 38 fi 39 } 40 41 morescreen() { # If multi-monitor is selected and there are more than two screens. 42 primary=$(echo "$screens" | dmenu -i -p "Select primary display:") 43 secondary=$(echo "$screens" | grep -v ^"$primary"$ | dmenu -i -p "Select secondary display:") 44 direction=$(printf "left\\nright" | dmenu -i -p "What side of $primary should $secondary be on?") 45 tertiary=$(echo "$screens" | grep -v ^"$primary"$ | grep -v ^"$secondary"$ | dmenu -i -p "Select third display:") 46 xrandr --output "$primary" --auto --output "$secondary" --"$direction"-of "$primary" --auto --output "$tertiary" --"$(printf "left\\nright" | grep -v "$direction")"-of "$primary" --auto 47 } 48 49 multimon() { # Multi-monitor handler. 50 case "$(echo "$screens" | wc -l)" in 51 2) twoscreen ;; 52 *) morescreen ;; 53 esac ;} 54 55 onescreen() { # If only one output available or chosen. 56 xrandr --output "$1" --auto --scale 1.0x1.0 $(echo "$allposs" | grep -v "\b$1" | awk '{print "--output", $1, "--off"}' | paste -sd ' ' -) 57 } 58 59 postrun() { # Stuff to run to clean up. 60 setbg # Fix background if screen size/arangement has changed. 61 { killall dunst ; setsid -f dunst ;} >/dev/null 2>&1 # Restart dunst to ensure proper location on screen 62 } 63 64 # Get all possible displays 65 allposs=$(xrandr -q | grep "connected") 66 67 # Get all connected screens. 68 screens=$(echo "$allposs" | awk '/ connected/ {print $1}') 69 70 # If there's only one screen 71 [ "$(echo "$screens" | wc -l)" -lt 2 ] && 72 { onescreen "$screens"; postrun; notify-send "💻 Only one screen detected." "Using it in its optimal settings..."; exit ;} 73 74 # Get user choice including multi-monitor and manual selection: 75 chosen=$(printf "%s\\nmulti-monitor\\nmanual selection" "$screens" | dmenu -i -p "Select display arangement:") && 76 case "$chosen" in 77 "manual selection") arandr ; exit ;; 78 "multi-monitor") multimon ;; 79 *) onescreen "$chosen" ;; 80 esac 81 82 postrun