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-rwxr-xr-x.local/bin/displayselect72
1 files changed, 72 insertions, 0 deletions
diff --git a/.local/bin/displayselect b/.local/bin/displayselect
new file mode 100755
index 0000000..c0e3479
--- /dev/null
+++ b/.local/bin/displayselect
@@ -0,0 +1,72 @@
+#!/bin/sh
+
+# A UI for detecting and selecting all displays. Probes xrandr for connected
+# displays and lets user select one to use. User may also select "manual
+# selection" which opens arandr.
+
+twoscreen() { # If multi-monitor is selected and there are two screens.
+
+ mirror=$(printf "no\\nyes" | dmenu -i -p "Mirror displays?")
+ # Mirror displays using native resolution of external display and a scaled
+ # version for the internal display
+ if [ "$mirror" = "yes" ]; then
+ external=$(echo "$screens" | dmenu -i -p "Optimize resolution for:")
+ internal=$(echo "$screens" | grep -v "$external")
+
+ res_external=$(xrandr --query | sed -n "/^$external/,/\+/p" | \
+ tail -n 1 | awk '{print $1}')
+ res_internal=$(xrandr --query | sed -n "/^$internal/,/\+/p" | \
+ tail -n 1 | awk '{print $1}')
+
+ res_ext_x=$(echo $res_external | sed 's/x.*//')
+ res_ext_y=$(echo $res_external | sed 's/.*x//')
+ res_int_x=$(echo $res_internal | sed 's/x.*//')
+ res_int_y=$(echo $res_internal | sed 's/.*x//')
+
+ scale_x=$(echo "$res_ext_x / $res_int_x" | bc -l)
+ scale_y=$(echo "$res_ext_y / $res_int_y" | bc -l)
+
+ xrandr --output "$external" --auto --scale 1.0x1.0 \
+ --output "$internal" --auto --same-as "$external" \
+ --scale "$scale_x"x"$scale_y"
+ else
+
+ primary=$(echo "$screens" | dmenu -i -p "Select primary display:")
+ secondary=$(echo "$screens" | grep -v "$primary")
+ direction=$(printf "left\\nright" | dmenu -i -p "What side of $primary should $secondary be on?")
+ xrandr --output "$primary" --auto --scale 1.0x1.0 --output "$secondary" --"$direction"-of "$primary" --auto --scale 1.0x1.0
+ fi
+ }
+
+morescreen() { # If multi-monitor is selected and there are more than two screens.
+ primary=$(echo "$screens" | dmenu -i -p "Select primary display:")
+ secondary=$(echo "$screens" | grep -v "$primary" | dmenu -i -p "Select secondary display:")
+ direction=$(printf "left\\nright" | dmenu -i -p "What side of $primary should $secondary be on?")
+ tertiary=$(echo "$screens" | grep -v "$primary" | grep -v "$secondary" | dmenu -i -p "Select third display:")
+ xrandr --output "$primary" --auto --output "$secondary" --"$direction"-of "$primary" --auto --output "$tertiary" --"$(printf "left\\nright" | grep -v "$direction")"-of "$primary" --auto
+ }
+
+multimon() { # Multi-monitor handler.
+ case "$(echo "$screens" | wc -l)" in
+ 1) xrandr $(echo "$allposs" | grep -v "$screens" | awk '{print "--output", $1, "--off"}' | tr '\n' ' ') ;;
+ 2) twoscreen ;;
+ *) morescreen ;;
+ esac ;}
+
+# Get all possible displays
+allposs=$(xrandr -q | grep "connected")
+
+# Get all connected screens.
+screens=$(echo "$allposs" | grep " connected" | awk '{print $1}')
+
+# Get user choice including multi-monitor and manual selection:
+chosen=$(printf "%s\\nmulti-monitor\\nmanual selection" "$screens" | dmenu -i -p "Select display arangement:") &&
+case "$chosen" in
+ "manual selection") arandr ; exit ;;
+ "multi-monitor") multimon ;;
+ *) xrandr --output "$chosen" --auto --scale 1.0x1.0 $(echo "$allposs" | grep -v "$chosen" | awk '{print "--output", $1, "--off"}' | tr '\n' ' ') ;;
+esac
+
+setbg # Fix background if screen size/arangement has changed.
+remaps # Re-remap keys if keyboard added (for laptop bases)
+pgrep -x dunst >/dev/null && killall dunst && setsid dunst & # Restart dunst to ensure proper location on screen