From 50c41755fd0a2f31c024d9b2dae3cce52e28503d Mon Sep 17 00:00:00 2001
From: Weird Constructor <weirdconstructor@gmail.com>
Date: Thu, 4 Mar 2021 18:00:42 +0100
Subject: [PATCH] Fix: Check for remaining events in the internal X11/xcb
 buffers (#86)

* Fix: Check for remaining events in the internal X11/xcb buffers before going to sleep.

* Also need to set the queue owner to xcb as wrl suggested.
---
 src/x11/window.rs         | 4 ++++
 src/x11/xcb_connection.rs | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/src/x11/window.rs b/src/x11/window.rs
index 244824f..9128f65 100644
--- a/src/x11/window.rs
+++ b/src/x11/window.rs
@@ -283,6 +283,10 @@ impl Window {
 
             let mut fds = [PollFd::new(xcb_fd, PollFlags::POLLIN)];
 
+            // Check for any events in the internal buffers
+            // before going to sleep:
+            self.drain_xcb_events(handler);
+
             // FIXME: handle errors
             poll(&mut fds, until_next_frame.subsec_millis() as i32).unwrap();
 
diff --git a/src/x11/xcb_connection.rs b/src/x11/xcb_connection.rs
index 0be7aa1..66e6f8d 100644
--- a/src/x11/xcb_connection.rs
+++ b/src/x11/xcb_connection.rs
@@ -46,6 +46,8 @@ impl XcbConnection {
     pub fn new() -> Result<Self, xcb::base::ConnError> {
         let (conn, xlib_display) = xcb::Connection::connect_with_xlib_display()?;
 
+        conn.set_event_queue_owner(xcb::base::EventQueueOwner::Xcb);
+
         let (wm_protocols, wm_delete_window, wm_normal_hints) = intern_atoms!(&conn, WM_PROTOCOLS, WM_DELETE_WINDOW, WM_NORMAL_HINTS);
 
         Ok(Self {