Backport fix for multi-screen sddm

fix-sddm-multi-screen.patch

@@ -0,0 +1,53 @@
+From 3c85e2e8899d1253430783a618d7584d985bd614 Mon Sep 17 00:00:00 2001
+From: Fabian Vogt <fabian@ritter-vogt.de>
+Date: Tue, 21 Feb 2023 16:03:51 +0100
+Subject: [PATCH] Use the QScreen of the QWindow as default output
+
+If the Window::setDesiredOutput API was not called for the QWindow, use
+QWindow::screen(). This allows assigning QWindows to specific screens using
+the plain Qt API.
+
+Passing nullptr to Window::setDesiredOutput explicitly results in nil as
+desired output for the layer, which lets the compositor select a screen.
+---
+ src/interfaces/window.cpp | 10 ++++++++--
+ 1 file changed, 8 insertions(+), 2 deletions(-)
+
+diff --git a/src/interfaces/window.cpp b/src/interfaces/window.cpp
+index 477b74e..7aa39f4 100644
+--- a/src/interfaces/window.cpp
++++ b/src/interfaces/window.cpp
+@@ -8,6 +8,7 @@
+ #include <layershellqt_logging.h>
+ 
+ #include <QPointer>
++#include <optional>
+ 
+ using namespace LayerShellQt;
+ 
+@@ -26,7 +27,7 @@ public:
+     Window::KeyboardInteractivity keyboardInteractivity = Window::KeyboardInteractivityExclusive;
+     Window::Layer layer = Window::LayerTop;
+     QMargins margins;
+-    QPointer<QScreen> desiredOutput;
++    std::optional<QPointer<QScreen>> desiredOutput;
+ };
+ 
+ static QMap<QWindow *, Window *> s_map;
+@@ -103,7 +104,12 @@ Window::Layer Window::layer() const
+ 
+ QScreen *Window::desiredOutput() const
+ {
+-    return d->desiredOutput;
++    // Don't use .value_or here to avoid a temporary QPointer
++    if (d->desiredOutput.has_value()) {
++        return d->desiredOutput.value();
++    }
++
++    return d->parentWindow->screen();
+ }
+ 
+ void Window::setDesiredOutput(QScreen *output)
+-- 
+GitLab
+

layer-shell-qt.spec

@@ -1,6 +1,6 @@
 Name:    layer-shell-qt
 Version: 5.27.1
-Release: 1%{?dist}
+Release: 2%{?dist}
 Summary: Library to easily use clients based on wlr-layer-shell
 
 License: LGPLv3+
@@ -14,6 +14,9 @@ URL:     https://invent.kde.org/plasma/%{name}
 %endif
 Source0: http://download.kde.org/%{stable}/plasma/%{version}/%{name}-%{version}.tar.xz
 
+# Upstream PR: https://invent.kde.org/plasma/layer-shell-qt/-/merge_requests/26
+Patch0: fix-sddm-multi-screen.patch
+
 BuildRequires: extra-cmake-modules >= 5.82
 
 BuildRequires: qt5-qtbase-devel
@@ -43,7 +46,7 @@ Requires: cmake(Qt5Gui) >= 5.15.0
 
 
 %prep
-%autosetup
+%autosetup -p1
 
 
 %build
@@ -68,6 +71,9 @@ Requires: cmake(Qt5Gui) >= 5.15.0
 
 
 %changelog
+* Fri Feb 24 2023 Alessandro Astone <ales.astone@gmail.com> - 5.27.1-2
+- Backport fix for multi-screen sddm
+
 * Tue Feb 21 2023 Marc Deop i Argemí <marcdeop@fedoraproject.org> - 5.27.1-1
 - 5.27.1