73 lines
3.4 KiB
Bash
Executable file
73 lines
3.4 KiB
Bash
Executable file
#!/bin/sh
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# A UI for detecting and selecting all displays.
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# Probes xrandr for connected displays and lets user select one to use.
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# User may also select "manual selection" which opens arandr.
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# I plan on adding a routine from multi-monitor setups later.
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twoscreen() { # If multi-monitor is selected and there are two screens.
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mirror=$(printf "no\\nyes" | dmenu -i -p "Mirror displays?")
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# Mirror displays using native resolution of external display and a scaled
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# version for the internal display
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if [ "$mirror" = "yes" ]; then
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external=$(echo "$screens" | dmenu -i -p "Optimize resolution for:")
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internal=$(echo "$screens" | grep -v "$external")
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res_external=$(xrandr --query | sed -n "/^$external/,/\+/p" | \
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tail -n 1 | awk '{print $1}')
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res_internal=$(xrandr --query | sed -n "/^$internal/,/\+/p" | \
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tail -n 1 | awk '{print $1}')
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res_ext_x=$(echo $res_external | sed 's/x.*//')
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res_ext_y=$(echo $res_external | sed 's/.*x//')
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res_int_x=$(echo $res_internal | sed 's/x.*//')
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res_int_y=$(echo $res_internal | sed 's/.*x//')
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scale_x=$(echo "$res_ext_x / $res_int_x" | bc -l)
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scale_y=$(echo "$res_ext_y / $res_int_y" | bc -l)
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xrandr --output "$external" --auto --scale 1.0x1.0 \
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--output "$internal" --auto --same-as "$external" \
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--scale "$scale_x"x"$scale_y"
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else
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primary=$(echo "$screens" | dmenu -i -p "Select primary display:")
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secondary=$(echo "$screens" | grep -v "$primary")
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direction=$(printf "left\\nright" | dmenu -i -p "What side of $primary should $secondary be on?")
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xrandr --output "$primary" --auto --scale 1.0x1.0 --output "$secondary" --"$direction"-of "$primary" --auto --scale 1.0x1.0
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fi
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}
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morescreen() { # If multi-monitor is selected and there are more than two screens.
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primary=$(echo "$screens" | dmenu -i -p "Select primary display:")
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secondary=$(echo "$screens" | grep -v "$primary" | dmenu -i -p "Select secondary display:")
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direction=$(printf "left\\nright" | dmenu -i -p "What side of $primary should $secondary be on?")
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tertiary=$(echo "$screens" | grep -v "$primary" | grep -v "$secondary" | dmenu -i -p "Select third display:")
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xrandr --output "$primary" --auto --output "$secondary" --"$direction"-of "$primary" --auto --output "$tertiary" --"$(printf "left\\nright" | grep -v "$direction")"-of "$primary" --auto
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}
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multimon() { # Multi-monitor handler.
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case "$(echo "$screens" | wc -l)" in
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1) xrandr $(echo "$allposs" | grep -v "$screens" | awk '{print "--output", $1, "--off"}' | tr '\n' ' ') ;;
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2) twoscreen ;;
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*) morescreen ;;
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esac ;}
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# Get all possible displays
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allposs=$(xrandr -q | grep "connected")
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# Get all connected screens.
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screens=$(echo "$allposs" | grep " connected" | awk '{print $1}')
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# Get user choice including multi-monitor and manual selection:
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chosen=$(printf "%s\\nmulti-monitor\\nmanual selection" "$screens" | dmenu -i -p "Select display arangement:") &&
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case "$chosen" in
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"manual selection") arandr ; exit ;;
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"multi-monitor") multimon ;;
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*) xrandr --output "$chosen" --auto --scale 1.0x1.0 $(echo "$allposs" | grep -v "$chosen" | awk '{print "--output", $1, "--off"}' | tr '\n' ' ') ;;
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esac
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setbg # Fix background if screen size/arangement has changed.
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remaps # Re-remap keys if keyboard added (for laptop bases)
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pgrep -x dunst >/dev/null && killall dunst && setsid dunst & # Restart dunst to ensure proper location on screen
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