Add initial xlibre/X11 configs and installs, add misc install programs

src_files/.local/scripts/display-manage

@@ -0,0 +1,63 @@
+#!/bin/sh
+
+# NOTE: just use this for recurring cases; if i'm doing a one-off case such presenting at
+#       an event or temporarily using more than one external monitor, then i probably
+#       would be better off just writing a one-time script in prep for that case;
+#       example where one external is DisplayPort-1, another is HDMI-1, and laptop is eDP:
+#           xrandr --query # to get devices and status
+#           xrandr --output DisplayPort-1 --primary --auto --output HDMI-1 --auto --output eDP --auto
+
+DISPMANAGE_EXT_PORT_ID_PREFIX="DisplayPort"
+DISPMANAGE_LAPTOP_ID="eDP"
+DISPMANAGE_LAPTOP_MODE='"1920x1280_60.00"'
+
+non_primary_monitors_off() {
+    xrandr |
+        grep -v "^Screen" |
+        grep -v "^\s" |
+        grep -v "primary" |
+        while IFS="\n " read -r target_mon_id remaining_text; do
+            xrandr --output "$target_mon_id" --off
+        done
+}
+
+solo_monitor_mode() {
+    mode_id="--auto"
+    [ "$1" = "$DISPMANAGE_LAPTOP_ID" ] &&
+        [ -n "$DISPMANAGE_LAPTOP_MODE" ] &&
+        mode_id="--mode $DISPMANAGE_LAPTOP_MODE"
+    echo "$mode_id" | xargs xrandr --output "$1" --primary
+    non_primary_monitors_off
+    ! [ "$2" = "--quiet" ] && echo "display-manage: solo monitor mode, $1"
+}
+
+primary_mon_id=""
+case "$1" in
+    (laptop | laptop-only)
+        primary_mon_id="$DISPMANAGE_LAPTOP_ID"
+        ;;
+    (ext | external)
+        primary_mon_id=$(
+            xrandr |
+                grep "^$DISPMANAGE_EXT_PORT_ID_PREFIX.*\sconnected" |
+                sed -n "1p" |
+                sed -E "s/^([^ ]+).*$/\1/g"
+        )
+        ;;
+esac
+
+[ -z "$primary_mon_id" ] &&
+    echo "display-manage: target monitor not detected or not configured; using laptop" &&
+    solo_monitor_mode "$DISPMANAGE_LAPTOP_ID" &&
+    exit 0
+
+case "$2" in
+    (m | mirror)
+        solo_monitor_mode "$primary_mon_id" --quiet
+        xrandr --output "$DISPMANAGE_LAPTOP_ID" --auto --same-as "$primary_mon_id"
+        echo "display-manage: $primary_mon_id monitor, primary; laptop monitor, mirror"
+        ;;
+    (*)
+        solo_monitor_mode "$primary_mon_id"
+        ;;
+esac