guix/gnu/packages/patches/qtwayland-5.15.18-0002-fix-issue-with-repeated-window-size-changes.patch

From 1161dd03e25dac8c301cea3e15fbb6fad184be96 Mon Sep 17 00:00:00 2001
From: Jaeyoon Jung <jaeyoon.jung@lge.com>
Date: Mon, 15 Feb 2021 08:31:06 +0900
Subject: [PATCH 02/55] Fix issue with repeated window size changes

Check if the new window size is different from the size requested
previously before calling wl_egl_window_resize. It addresses the issue
where repeated setGeometry calls between two sizes might not work as
expected. The problem occurs when wl_egl_window_get_attached_size does
not get the same size that was requested by the previous setGeometry
call. If the returned size happened to match the new size instead,
we would mistakenly skip the resize.

Change-Id: Iafe4a91cc707f854b9099b6109b6be1423d7bd29
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
(cherry picked from commit 14d066c61025e548227ccd8d655e80ffa31fa15e)
---
 .../client/wayland-egl/qwaylandeglwindow.cpp                  | 4 +++-
 .../client/wayland-egl/qwaylandeglwindow.h                    | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/hardwareintegration/client/wayland-egl/qwaylandeglwindow.cpp b/src/hardwareintegration/client/wayland-egl/qwaylandeglwindow.cpp
index 30740e83..9971a9ff 100644
--- a/src/hardwareintegration/client/wayland-egl/qwaylandeglwindow.cpp
+++ b/src/hardwareintegration/client/wayland-egl/qwaylandeglwindow.cpp
@@ -123,14 +123,16 @@ void QWaylandEglWindow::updateSurface(bool create)
             if (!disableResizeCheck) {
                 wl_egl_window_get_attached_size(m_waylandEglWindow, &current_width, &current_height);
             }
-            if (disableResizeCheck || (current_width != sizeWithMargins.width() || current_height != sizeWithMargins.height())) {
+            if (disableResizeCheck || (current_width != sizeWithMargins.width() || current_height != sizeWithMargins.height()) || m_requestedSize != sizeWithMargins) {
                 wl_egl_window_resize(m_waylandEglWindow, sizeWithMargins.width(), sizeWithMargins.height(), mOffset.x(), mOffset.y());
+                m_requestedSize = sizeWithMargins;
                 mOffset = QPoint();
 
                 m_resize = true;
             }
         } else if (create && wlSurface()) {
             m_waylandEglWindow = wl_egl_window_create(wlSurface(), sizeWithMargins.width(), sizeWithMargins.height());
+            m_requestedSize = sizeWithMargins;
         }
 
         if (!m_eglSurface && m_waylandEglWindow && create) {
diff --git a/src/hardwareintegration/client/wayland-egl/qwaylandeglwindow.h b/src/hardwareintegration/client/wayland-egl/qwaylandeglwindow.h
index 2fccbcea..ad1e5ee9 100644
--- a/src/hardwareintegration/client/wayland-egl/qwaylandeglwindow.h
+++ b/src/hardwareintegration/client/wayland-egl/qwaylandeglwindow.h
@@ -85,6 +85,7 @@ private:
     mutable QOpenGLFramebufferObject *m_contentFBO = nullptr;
 
     QSurfaceFormat m_format;
+    QSize m_requestedSize;
 };
 
 }
-- 
2.52.0