emacs update. improvements

[distro-setup] / laptop-xrandr

diff --git a/laptop-xrandr b/laptop-xrandr
index 6701e74525d7c2203a4a03a5fc9c533596b04ec9..d57b43f1b6ec49f43d50a82e9a72036acb35ab54 100755 (executable)
--- a/laptop-xrandr
+++ b/laptop-xrandr
@@ -22,29 +22,73 @@
 
 set -e; . /usr/local/lib/bash-bear; set +e
 
+xf=$(mktemp)
+xrandr >$xf
+
 # eg eDP-1 connected primary
-laptop_out=$(xrandr | awk '$3 == "primary" {print $1}')
-output=$(xrandr | grep -E "^(HDMI|DP)[^ ]* connected [0-9]" | awk '{print $1}' ||:)
+laptop_out=$(awk '$3 == "primary" {print $1}' $xf)
+output=$(grep -E "^(HDMI|DP)[^ ]* connected [0-9]" $xf| awk '{print $1}' ||:)
+
+edid() {
+  card=$1
+  sha256sum </sys/class/drm/$card/edid | grep -oE '^.{10}'
+}
 
+restart=false
 left_right_arg=--right-of
 if [[ $output ]]; then
 
+  mode=$(grep -A1 -E "^$output" $xf | tail -n1 | awk '{print $1}')
+
+  primary_res=$(awk '$2 == "connected" && $3 == "primary" { print $4 }' $xf | sed 's/+.*//')
+  primary_x=${primary_res%x*}
+
+  x=${mode%x*}
+  y=${mode#*x}
+
+  half_x=$(( x / 2 ))
+
+  x_offset=$primary_x
+
   # identify monitors that are always on the left.
-  if [[ $output == HDMI2 && $(sha256sum </sys/class/drm/card0-HDMI-A-2/edid | grep -oE '^.{10}') == 192efbdcef ]]; then
+  if [[ $output == HDMI2 && $(edid card0-HDMI-A-2) == 192efbdcef ]] || \
+       [[ $output == HDMI-1 && $(edid card1-HDMI-A-1 ) == 7c58f9ac1e ]]; then
     left_right_arg=--left-of
+    x_offset=0
   fi
-  if [[ $output == HDMI-1 && $(sha256sum </sys/class/drm/card1-HDMI-A-1/edid | grep -oE '^.{10}') == 7c58f9ac1e ]]; then
-    left_right_arg=--left-of
+
+  # some monitors need off then on to become active
+  if $restart; then
+    xrandr --output $output --off
+    sleep 2
   fi
 
-  xrandr --output $output --off
-  sleep 2
-  mode=$(xrandr | grep -A1 -E "^$output" | tail -n1 | awk '{print $1}')
+
   # eg: 3840x2160
   echo mode=$mode
   xrandr --output $output $left_right_arg $laptop_out --mode $mode
 
-  for i in 1 2 4 5 6 7 8 9 10; do
+
+  # This splits a monitor into 2 virtual screens, which makes it split
+  # into 2 workspaces in i3, which is a much more convenient setup for
+  # managing windows.
+  # todo: add an option to turn this off
+  # todo: do this on systems with just 1 monitor.
+  #
+  # /298 & 336 are millimeters. I took them from a monitor I was using. I
+  # don't know if they are important, I assume not important enough to
+  # change for different monitors.
+
+  for x in LEFT RIGHT; do
+    if xrandr --listmonitors | awk '$2 == BIG-'$x |grep . >/dev/null; then
+      xrandr --delmonitor BIG-$x
+    fi
+  done
+  xrandr --setmonitor BIG-LEFT $half_x/298x$y/336+0+$x_offset $output
+  xrandr --setmonitor BIG-RIGHT $half_x/298x$y/336+$(( x_offset + half_x ))+0 none
+
+
+  for i in 2 3 4 5 6 7 8 9 10; do
     # if the workspace is already there, this will fail.
     # if the workspace doesn't exist yet, it fails with:
     # ERROR: No output matched