dotfiles

commit 7d318d6d9db5276c870d15d1f3af7cafab0c8488
parent 1ce5e3219ee64524419c3e7a2debbe81522ce882
Author: Anders Damsgaard <anders@adamsgaard.dk>
Date:   Sun, 23 Dec 2018 17:07:04 +0100

Allow mirroring between internal and external display, with scaling for internal display

Diffstat:
M
links/bin/displayselect
 | 
27
++++++++++++++++++++++-----

1 file changed, 22 insertions(+), 5 deletions(-)
diff --git a/links/bin/displayselect b/links/bin/displayselect
@@ -6,13 +6,30 @@
 # I plan on adding a routine from multi-monitor setups later.
 
 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
-        screen1=$(echo "$screens" | head -n 1)
-        screen2=$(echo "$screens" | tail -n 1)
+        external=$(echo "$screens" | dmenu -i -p "Select external display:")
+        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 "$screen1" \
-            --output "$screen2" --same-as "$screen1"
+        xrandr --output "$external" --auto \
+            --output "$internal" --auto --same-as "$external" \
+            --scale "$scale_x"x"$scale_y"
     else
 
         primary=$(echo "$screens" | dmenu -i -p "Select primary display:")
@@ -62,7 +79,7 @@ if [ $(echo "$screens" | wc -l) -gt 1 ]; then
     case "$chosen" in
         "manual selection") arandr ; exit ;;
         "multi-monitor") multimon ;;
-        *) xrandr --output "$chosen" --auto $(echo "$screens" | grep -v "$chosen" | awk '{print "--output", $1, "--off"}' | tr '\n' ' ') ;;
+        *) xrandr --output "$chosen" --auto --scale 1.0x1.0 $(echo "$screens" | grep -v "$chosen" | awk '{print "--output", $1, "--off"}' | tr '\n' ' ') ;;
     esac
 fi