From feb815bc39ff4d6849458e607ecc444b383d743b Mon Sep 17 00:00:00 2001
From: Pavel Kachalouski <pavel.kachalouski@gooddata.com>
Date: Thu, 4 May 2017 12:58:31 +0200
Subject: [PATCH] Added monitor switch files.

---
 monitor-switch/10-monitor-hotplug.rules |  1 +
 monitor-switch/monitor-hotplug.path     |  6 ++++++
 monitor-switch/monitor-hotplug.service  |  9 +++++++++
 monitor-switch/update-output.scala      | 27 +++++++++++++++++++++++++
 4 files changed, 43 insertions(+)
 create mode 100644 monitor-switch/10-monitor-hotplug.rules
 create mode 100644 monitor-switch/monitor-hotplug.path
 create mode 100644 monitor-switch/monitor-hotplug.service
 create mode 100755 monitor-switch/update-output.scala

diff --git a/monitor-switch/10-monitor-hotplug.rules b/monitor-switch/10-monitor-hotplug.rules
new file mode 100644
index 0000000..241bc99
--- /dev/null
+++ b/monitor-switch/10-monitor-hotplug.rules
@@ -0,0 +1 @@
+ACTION=="change", SUBSYSTEM=="drm", ENV{HOTPLUG}=="1", RUN+="/usr/bin/touch /tmp/monitor-hotplug-changed"
diff --git a/monitor-switch/monitor-hotplug.path b/monitor-switch/monitor-hotplug.path
new file mode 100644
index 0000000..fab221e
--- /dev/null
+++ b/monitor-switch/monitor-hotplug.path
@@ -0,0 +1,6 @@
+[Path]
+PathModified=/tmp/monitor-hotplug-changed
+Unit=monitor-hotplug.service
+
+[Install]
+WantedBy=multi-user.target
diff --git a/monitor-switch/monitor-hotplug.service b/monitor-switch/monitor-hotplug.service
new file mode 100644
index 0000000..556616c
--- /dev/null
+++ b/monitor-switch/monitor-hotplug.service
@@ -0,0 +1,9 @@
+[Unit]
+Description=Update Monitor outputs
+
+[Service]
+Environment=DISPLAY=:0
+Environment=XAUTHORITY=/home/nnm/.Xauthority
+Type=oneshot
+ExecStart=/usr/bin/scala -nc -save /usr/local/bin/update-output.scala
+User=nnm
diff --git a/monitor-switch/update-output.scala b/monitor-switch/update-output.scala
new file mode 100755
index 0000000..3f140e8
--- /dev/null
+++ b/monitor-switch/update-output.scala
@@ -0,0 +1,27 @@
+import scala.sys.process._
+
+val eDP1 = List("--output", "eDP1", "--primary", "--auto", "--pos", "0x0", "--rotate", "normal")
+
+val interfaceMapOn = Map[String, Seq[String]](
+  "DP1" -> List("--output", "DP1", "--auto", "--right-of", "eDP1", "--rotate", "normal"),
+  "HDMI2" -> List("--output", "HDMI2", "--auto", "--left-of", "eDP1", "--rotate", "normal")
+)
+
+val interfaceMapOff = Map[String, Seq[String]](
+  "DP1" -> List("--output", "DP1", "--off"),
+  "DP2" -> List("--output", "DP2", "--off"),
+  "HDMI1" -> List("--output", "HDMI1", "--off"),
+  "HDMI2" -> List("--output", "HDMI2", "--off")
+)
+
+val interfacesOn = ("/usr/bin/xrandr" #| Seq("grep", "-w", "connected") #| Seq("tr", "-s", "' '") #| Seq("cut", "-d", " ", "-f", "1")).!!.trim.split("\n")
+val interfacesOff = ("/usr/bin/xrandr" #| Seq("grep", "-w", "disconnected") #| Seq("tr", "-s", "' '") #| Seq("cut", "-d", " ", "-f", "1")).!!.trim.split("\n")
+var execCmd = "/usr/bin/xrandr" :: eDP1 ++
+  interfacesOn.flatMap(i => interfaceMapOn.getOrElse(i.toUpperCase, List.empty)) ++
+  interfacesOff.flatMap(i => interfaceMapOff.getOrElse(i.toUpperCase, List.empty))
+
+println(s"Enabled interfaces: ${interfacesOn.mkString(" ")}")
+println(s"Disabled interfaces: ${interfacesOff.mkString(" ")}")
+println(s"Executing command line: $execCmd")
+
+execCmd.!