From 4b637506d971a4c1c05bd3e85ceee0ad923fc72e Mon Sep 17 00:00:00 2001
From: Tom Willemse <tom@ryuslash.org>
Date: Sun, 26 Apr 2020 16:17:45 -0700
Subject: [PATCH] Automatically hide polybar if necessary
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xfreerdp doesn’t seem to play nice with Polybar, so hide Polybar whenever
xfreerdp is focused.
---
 .../herbstluftwm/autostart.d/polybar.sh       |  2 +-
 polybar/usr/bin/autohide-polybar.sh           | 21 +++++++++++++++++++
 2 files changed, 22 insertions(+), 1 deletion(-)
 create mode 100755 polybar/usr/bin/autohide-polybar.sh

diff --git a/polybar/.config/herbstluftwm/autostart.d/polybar.sh b/polybar/.config/herbstluftwm/autostart.d/polybar.sh
index bec6eb7..3dd29ab 100755
--- a/polybar/.config/herbstluftwm/autostart.d/polybar.sh
+++ b/polybar/.config/herbstluftwm/autostart.d/polybar.sh
@@ -1,2 +1,2 @@
 #!/usr/bin/env bash
-pgrep polybar || { polybar "$(hostname)" 2> /dev/null & }
+pgrep polybar || { autohide-polybar.sh && polybar "$(hostname)" 2> /dev/null & }
diff --git a/polybar/usr/bin/autohide-polybar.sh b/polybar/usr/bin/autohide-polybar.sh
new file mode 100755
index 0000000..1b0e0d7
--- /dev/null
+++ b/polybar/usr/bin/autohide-polybar.sh
@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+# Has to start with my_ or herbstluftwm will throw up.
+attr_name=my_polybar_showing
+
+herbstclient get_attr "$attr_name" 1> /dev/null 2>&1 \
+    || herbstclient new_attr bool "$attr_name"
+herbstclient set_attr "$attr_name" true
+
+herbstclient -i focus_changed | while read -r _ winid _; do
+    window_class=$(herbstclient attr "clients.${winid}.class")
+    showing_polybar=$(herbstclient attr "$attr_name")
+
+    if [[ $window_class =~ xfreerdp ]]; then
+        polybar-msg cmd hide > /dev/null \
+            && herbstclient set_attr "$attr_name" false
+    elif [[ $showing_polybar == "false" ]]; then
+        polybar-msg cmd show > /dev/null \
+            && herbstclient set_attr "$attr_name" true
+    fi
+done &