From 17e4d7ede1e3755d43e51de06782703dedea306e Mon Sep 17 00:00:00 2001
From: Michael Stapelberg <michael@stapelberg.de>
Date: Sun, 22 Apr 2012 20:43:52 +0200
Subject: [PATCH] i3bar: kick tray clients after output configuration changed

This makes i3bar reflect xrandr --output foo --primary changes immediately.
---
 i3bar/include/xcb.h | 11 +++++++++++
 i3bar/src/ipc.c     |  5 +++++
 i3bar/src/xcb.c     | 34 +++++++++++++++++++++++-----------
 3 files changed, 39 insertions(+), 11 deletions(-)

diff --git a/i3bar/include/xcb.h b/i3bar/include/xcb.h
index c5a50787..9ed21496 100644
--- a/i3bar/include/xcb.h
+++ b/i3bar/include/xcb.h
@@ -77,6 +77,17 @@ void clean_xcb();
  */
 void get_atoms();
 
+/*
+ * Reparents all tray clients of the specified output to the root window. This
+ * is either used when shutting down, when an output appears (xrandr --output
+ * VGA1 --off) or when the primary output changes.
+ *
+ * Applications using the tray will start the protocol from the beginning again
+ * afterwards.
+ *
+ */
+void kick_tray_clients(i3_output *output);
+
 /*
  * Destroy the bar of the specified output
  *
diff --git a/i3bar/src/ipc.c b/i3bar/src/ipc.c
index 8f8174e5..2ebc4c64 100644
--- a/i3bar/src/ipc.c
+++ b/i3bar/src/ipc.c
@@ -65,6 +65,11 @@ void got_output_reply(char *reply) {
     DLOG("Reconfiguring Windows...\n");
     realloc_sl_buffer();
     reconfig_windows();
+
+    i3_output *o_walk;
+    SLIST_FOREACH(o_walk, outputs, slist) {
+        kick_tray_clients(o_walk);
+    }
 }
 
 /*
diff --git a/i3bar/src/xcb.c b/i3bar/src/xcb.c
index 53ea0d31..9907665e 100644
--- a/i3bar/src/xcb.c
+++ b/i3bar/src/xcb.c
@@ -1087,6 +1087,28 @@ void get_atoms() {
     DLOG("Got Atoms\n");
 }
 
+/*
+ * Reparents all tray clients of the specified output to the root window. This
+ * is either used when shutting down, when an output appears (xrandr --output
+ * VGA1 --off) or when the primary output changes.
+ *
+ * Applications using the tray will start the protocol from the beginning again
+ * afterwards.
+ *
+ */
+void kick_tray_clients(i3_output *output) {
+    trayclient *trayclient;
+    TAILQ_FOREACH(trayclient, output->trayclients, tailq) {
+        /* Unmap, then reparent (to root) the tray client windows */
+        xcb_unmap_window(xcb_connection, trayclient->win);
+        xcb_reparent_window(xcb_connection,
+                            trayclient->win,
+                            xcb_root,
+                            0,
+                            0);
+    }
+}
+
 /*
  * Destroy the bar of the specified output
  *
@@ -1099,17 +1121,7 @@ void destroy_window(i3_output *output) {
         return;
     }
 
-    trayclient *trayclient;
-    TAILQ_FOREACH(trayclient, output->trayclients, tailq) {
-        /* Unmap, then reparent (to root) the tray client windows */
-        xcb_unmap_window(xcb_connection, trayclient->win);
-        xcb_reparent_window(xcb_connection,
-                            trayclient->win,
-                            xcb_root,
-                            0,
-                            0);
-    }
-
+    kick_tray_clients(output);
     xcb_destroy_window(xcb_connection, output->bar);
     output->bar = XCB_NONE;
 }