From 7018357e47d6fb090372e9b4f147aaaff7581b01 Mon Sep 17 00:00:00 2001
From: Michael Carlberg <c@rlberg.se>
Date: Thu, 24 Nov 2016 23:57:25 +0100
Subject: [PATCH] fix(tray): Add compton atom to exclude shadow

---
 include/x11/xutils.hpp | 2 ++
 src/x11/tray.cpp       | 2 ++
 src/x11/xutils.cpp     | 6 ++++++
 3 files changed, 10 insertions(+)

diff --git a/include/x11/xutils.hpp b/include/x11/xutils.hpp
index 26d1e774..49b7ab86 100644
--- a/include/x11/xutils.hpp
+++ b/include/x11/xutils.hpp
@@ -18,6 +18,8 @@ namespace xutils {
   void pack_values(uint32_t mask, const xcb_params_configure_window_t* src, uint32_t* dest);
 
   void visibility_notify(connection& conn, const xcb_window_t& win, xcb_visibility_t state);
+
+  void compton_shadow_exclude(connection& conn, const xcb_window_t& win);
 }
 
 POLYBAR_NS_END
diff --git a/src/x11/tray.cpp b/src/x11/tray.cpp
index 9a02f3b3..bc6c99df 100644
--- a/src/x11/tray.cpp
+++ b/src/x11/tray.cpp
@@ -527,6 +527,8 @@ void tray_manager::create_window() {  // {{{
 
   m_connection.create_window_checked(
       scr->root_depth, m_tray, scr->root, x, y, w, h, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT, scr->root_visual, mask, values);
+
+  xutils::compton_shadow_exclude(m_connection, m_tray);
 }  // }}}
 
 /**
diff --git a/src/x11/xutils.cpp b/src/x11/xutils.cpp
index 018c8eff..99b72bd5 100644
--- a/src/x11/xutils.cpp
+++ b/src/x11/xutils.cpp
@@ -1,3 +1,4 @@
+#include "x11/atoms.hpp"
 #include "x11/xutils.hpp"
 #include "x11/connection.hpp"
 #include "x11/xlib.hpp"
@@ -45,6 +46,11 @@ namespace xutils {
     const char* data = reinterpret_cast<const char*>(notify.get());
     conn.send_event(true, win, XCB_EVENT_MASK_NO_EVENT, data);
   }
+
+  void compton_shadow_exclude(connection& conn, const xcb_window_t& win) {
+    const uint32_t shadow = 0;
+    conn.change_property(XCB_PROP_MODE_REPLACE, win, _COMPTON_SHADOW, XCB_ATOM_CARDINAL, 32, 1, &shadow);
+  }
 }
 
 POLYBAR_NS_END