qt5-qtwayland/0016-Client-Avoid-processing-of-events-when-showing-windo.patch

From fde475c6e235429e7af64a54b9d81e893c618af7 Mon Sep 17 00:00:00 2001
From: David Edmundson <davidedmundson@kde.org>
Date: Sun, 14 Nov 2021 13:54:19 +0000
Subject: [PATCH 16/51] Client: Avoid processing of events when showing windows

The only time we want to dispatch events from the wayland socket is when
the application is waiting for external events. Doing so at any other
time will cause unpredictable behavior in client code.

This caused a crash downstream where we had outputs get altered whilst
itterating through outputs, which shouldn't happen.

There is no benefit to flushing here, it won't make anything appear
faster as we haven't attached the buffer yet.

Change-Id: Ie13eae4012dab96a93d8810f468d1343402b8c28
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Aleix Pol Gonzalez <aleixpol@kde.org>
(cherry picked from commit 46ed85a80b28d519cf5887bbdce55d1bf57886c3)
---
 src/client/qwaylandwindow.cpp | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/client/qwaylandwindow.cpp b/src/client/qwaylandwindow.cpp
index b363c352..b98435ed 100644
--- a/src/client/qwaylandwindow.cpp
+++ b/src/client/qwaylandwindow.cpp
@@ -437,7 +437,6 @@ void QWaylandWindow::setVisible(bool visible)
         if (window()->type() == Qt::Popup || window()->type() == Qt::ToolTip)
             activePopups << this;
         initWindow();
-        mDisplay->flushRequests();
 
         setGeometry(windowGeometry());
         // Don't flush the events here, or else the newly visible window may start drawing, but since
-- 
2.40.1