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From 6f8b8efb338117ee197092e46b25b489b612257d Mon Sep 17 00:00:00 2001
From: Vlad Zahorodnii <vlad.zahorodnii@kde.org>
Date: Fri, 8 May 2020 11:26:27 +0300
Subject: [wayland] Place lockscreen greeter above other windows

Summary: BUG: 420802

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: apol, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D29523
---
 abstract_client.cpp                  |  2 ++
 autotests/integration/lockscreen.cpp | 19 +++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/abstract_client.cpp b/abstract_client.cpp
index ca6c422..48918e7 100644
--- a/abstract_client.cpp
+++ b/abstract_client.cpp
@@ -275,6 +275,8 @@ Layer AbstractClient::belongsToLayer() const
     // Since the desktop is also activated, nothing should be in the ActiveLayer, though
     if (isInternal())
         return UnmanagedLayer;
+    if (isLockScreen())
+        return UnmanagedLayer;
     if (isDesktop())
         return workspace()->showingDesktop() ? AboveLayer : DesktopLayer;
     if (isSplash())          // no damn annoying splashscreens
diff --git a/autotests/integration/lockscreen.cpp b/autotests/integration/lockscreen.cpp
index e258540..82cac09 100644
--- a/autotests/integration/lockscreen.cpp
+++ b/autotests/integration/lockscreen.cpp
@@ -62,6 +62,7 @@ private Q_SLOTS:
     void initTestCase();
     void init();
     void cleanup();
+    void testStackingOrder();
     void testPointer();
     void testPointerButton();
     void testPointerAxis();
@@ -223,6 +224,24 @@ void LockScreenTest::cleanup()
     Test::destroyWaylandConnection();
 }
 
+void LockScreenTest::testStackingOrder()
+{
+    // This test verifies that the lockscreen greeter is placed above other windows.
+
+    QSignalSpy clientAddedSpy(waylandServer(), &WaylandServer::shellClientAdded);
+    QVERIFY(clientAddedSpy.isValid());
+
+    LOCK
+    QVERIFY(clientAddedSpy.wait());
+
+    AbstractClient *client = clientAddedSpy.first().first().value<AbstractClient *>();
+    QVERIFY(client);
+    QVERIFY(client->isLockScreen());
+    QCOMPARE(client->layer(), UnmanagedLayer);
+
+    UNLOCK
+}
+
 void LockScreenTest::testPointer()
 {
     using namespace KWayland::Client;
-- 
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