[platforms/virtual] Create output devices

Summary:
Create output devices in virtual backend. For that the setVirtualOutputs call
can only come after the Wayland server has been initiliazied such that the
display exists to create the output and output device interfaces. Tests have
been adjusted for that.

Test Plan:
```
98% tests passed, 3 tests failed out of 148

Total Test time (real) = 362.97 sec

The following tests FAILED:
         33 - kwin-testInternalWindow (Failed)
         39 - kwin-testPointerInput (Failed)
        101 - kwin-testMoveResize (Failed)
```
Failing of these tests looks unrelated to the change.

Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Maniphest Tasks: T11459

Differential Revision: https://phabricator.kde.org/D23477

autotests/integration/activities_test.cpp

@@ -64,8 +64,8 @@ void ActivitiesTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->setUseKActivities(true);
     kwinApp()->start();

autotests/integration/colorcorrect_nightcolor_test.cpp

@@ -49,8 +49,8 @@ void ColorCorrectNightColorTest::initTestCase()
 {
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->setConfig(KSharedConfig::openConfig(QString(), KConfig::SimpleConfig));
 

autotests/integration/debug_console_test.cpp

@@ -62,8 +62,8 @@ void DebugConsoleTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
     QVERIFY(workspaceCreatedSpy.wait());

autotests/integration/decoration_input_test.cpp

@@ -138,8 +138,8 @@ void DecorationInputTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     // change some options
     KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);

autotests/integration/desktop_window_x11_test.cpp

@@ -58,8 +58,8 @@ void X11DesktopWindowTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
     QVERIFY(workspaceCreatedSpy.wait());

autotests/integration/dont_crash_aurorae_destroy_deco.cpp

@@ -59,8 +59,8 @@ void DontCrashAuroraeDestroyDecoTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);
     config->group("org.kde.kdecoration2").writeEntry("library", "org.kde.kwin.aurorae");

autotests/integration/dont_crash_empty_deco.cpp

@@ -55,8 +55,8 @@ void DontCrashEmptyDecorationTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     // this test needs to enforce OpenGL compositing to get into the crashy condition
     qputenv("KWIN_COMPOSE", QByteArrayLiteral("O2"));

autotests/integration/dont_crash_no_border.cpp

@@ -62,8 +62,8 @@ void DontCrashNoBorder::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);
     config->group("org.kde.kdecoration2").writeEntry("NoPlugin", true);

autotests/integration/dont_crash_reinitialize_compositor.cpp

@@ -64,8 +64,8 @@ void DontCrashReinitializeCompositorTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     auto config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);
     KConfigGroup plugins(config, QStringLiteral("Plugins"));

autotests/integration/dont_crash_useractions_menu.cpp

@@ -62,8 +62,8 @@ void TestDontCrashUseractionsMenu::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     // force style to breeze as that's the one which triggered the crash
     QVERIFY(kwinApp()->setStyle(QStringLiteral("breeze")));

autotests/integration/input_stacking_order.cpp

@@ -68,8 +68,8 @@ void InputStackingOrderTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
     QVERIFY(workspaceCreatedSpy.wait());

autotests/integration/internal_window.cpp

@@ -189,8 +189,8 @@ void InternalWindowTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     kwinApp()->setConfig(KSharedConfig::openConfig(QString(), KConfig::SimpleConfig));
 
     kwinApp()->start();

autotests/integration/lockscreen.cpp

@@ -189,8 +189,8 @@ void LockScreenTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     qputenv("KWIN_COMPOSE", QByteArrayLiteral("O2"));
     kwinApp()->start();

autotests/integration/maximize_test.cpp

@@ -69,8 +69,8 @@ void TestMaximized::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->setConfig(KSharedConfig::openConfig(QString(), KConfig::SimpleConfig));
 

autotests/integration/placement.cpp

@@ -90,8 +90,8 @@ void TestPlacement::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->setConfig(KSharedConfig::openConfig(QString(), KConfig::SimpleConfig));
 

autotests/integration/plasmawindow_test.cpp

@@ -75,8 +75,8 @@ void PlasmaWindowTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
     QVERIFY(workspaceCreatedSpy.wait());

autotests/integration/pointer_constraints_test.cpp

@@ -75,8 +75,8 @@ void TestPointerConstraints::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     // set custom config which disables the OnScreenNotification
     KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);

autotests/integration/pointer_input.cpp

@@ -147,8 +147,8 @@ void PointerInputTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->setConfig(KSharedConfig::openConfig(QString(), KConfig::SimpleConfig));
 

autotests/integration/quick_tiling_test.cpp

@@ -102,8 +102,8 @@ void QuickTilingTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     // set custom config which disables the Outline
     KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);

autotests/integration/screenedge_client_show_test.cpp

@@ -57,8 +57,8 @@ void ScreenEdgeClientShowTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     // set custom config which disable touch edge
     KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);

autotests/integration/shade_test.cpp

@@ -54,8 +54,8 @@ void ShadeTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
     QVERIFY(workspaceCreatedSpy.wait());

autotests/integration/shell_client_rules_test.cpp

@@ -230,8 +230,8 @@ void TestShellClientRules::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
     QVERIFY(workspaceCreatedSpy.wait());

autotests/integration/shell_client_test.cpp

@@ -133,8 +133,8 @@ void TestShellClient::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
     QVERIFY(workspaceCreatedSpy.wait());

autotests/integration/struts_test.cpp

@@ -74,8 +74,8 @@ void StrutsTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     // set custom config which disables the Outline
     KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);

autotests/integration/touch_input_test.cpp

@@ -63,8 +63,8 @@ void TouchInputTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
     QVERIFY(workspaceCreatedSpy.wait());

autotests/integration/transient_placement.cpp

@@ -79,8 +79,8 @@ void TransientPlacementTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
     QVERIFY(workspaceCreatedSpy.wait());

autotests/integration/window_rules_test.cpp

@@ -58,8 +58,8 @@ void WindowRuleTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
     QVERIFY(workspaceCreatedSpy.wait());

autotests/integration/window_selection_test.cpp

@@ -69,8 +69,8 @@ void TestWindowSelection::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     qputenv("XKB_DEFAULT_RULES", "evdev");
 
     kwinApp()->start();

autotests/integration/xwayland_input_test.cpp

@@ -57,8 +57,8 @@ void XWaylandInputTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
     QVERIFY(workspaceCreatedSpy.wait());

autotests/integration/xwayland_selections_test.cpp

@@ -58,10 +58,10 @@ void XwaylandSelectionsTest::initTestCase()
     QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
     QVERIFY(workspaceCreatedSpy.isValid());
     kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
-    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 //    QSignalSpy clipboardSyncDevicedCreated{waylandServer(), &WaylandServer::xclipboardSyncDataDeviceCreated};
 //    QVERIFY(clipboardSyncDevicedCreated.isValid());
     QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));
+    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
 
     kwinApp()->start();
     QVERIFY(workspaceCreatedSpy.wait());

plugins/platforms/virtual/virtual_backend.cpp

@@ -49,6 +49,7 @@ VirtualBackend::VirtualBackend(QObject *parent)
     }
     setSupportsPointerWarping(true);
     setSupportsGammaControl(true);
+    handleOutputs();
 }
 
 VirtualBackend::~VirtualBackend()
@@ -65,12 +66,11 @@ void VirtualBackend::init()
      */
     if (!m_outputs.size()) {
         VirtualOutput *dummyOutput = new VirtualOutput(this);
-        dummyOutput->setGeometry(QRect(QPoint(0, 0), initialWindowSize()));
+        dummyOutput->init(QPoint(0, 0), initialWindowSize());
         m_outputs << dummyOutput ;
         m_enabledOutputs << dummyOutput ;
     }
 
-
     setSoftWareCursor(true);
     setReady(true);
     waylandServer()->seat()->setHasPointer(true);
@@ -126,15 +126,16 @@ void VirtualBackend::setVirtualOutputs(int count, QVector<QRect> geometries, QVe
     int sumWidth = 0;
     for (int i = 0; i < count; i++) {
         VirtualOutput *vo = new VirtualOutput(this);
-        if (scales.size()) {
-            vo->setScale(scales.at(i));
-        }
         if (geometries.size()) {
-            vo->setGeometry(geometries.at(i));
-        } else if (!vo->geometry().isValid()) {
-            vo->setGeometry(QRect(QPoint(sumWidth, 0), initialWindowSize()));
+            const QRect geo = geometries.at(i);
+            vo->init(geo.topLeft(), geo.size());
+        } else {
+            vo->init(QPoint(sumWidth, 0), initialWindowSize());
             sumWidth += initialWindowSize().width();
         }
+        if (scales.size()) {
+            vo->setScale(scales.at(i));
+        }
         m_outputs[i] = m_enabledOutputs[i] = vo;
     }
 

plugins/platforms/virtual/virtual_output.cpp

@@ -26,14 +26,26 @@ VirtualOutput::VirtualOutput(QObject *parent)
     : AbstractWaylandOutput()
 {
     Q_UNUSED(parent);
-
-    setScale(1.);
 }
 
 VirtualOutput::~VirtualOutput()
 {
 }
 
+void VirtualOutput::init(const QPoint &logicalPosition, const QSize &pixelSize)
+{
+    KWayland::Server::OutputDeviceInterface::Mode mode;
+    mode.id = 0;
+    mode.size = pixelSize;
+    mode.flags = KWayland::Server::OutputDeviceInterface::ModeFlag::Current;
+    mode.refreshRate = 60000;  // TODO
+    AbstractWaylandOutput::initWaylandOutputDevice("model_TODO", "manufacturer_TODO",
+                                                   "UUID_TODO", { mode });
+    setEnabled(true);
+    setGeometry(QRect(logicalPosition, pixelSize));
+    setScale(1.);
+}
+
 QSize VirtualOutput::pixelSize() const
 {
     return m_pixelSize;

plugins/platforms/virtual/virtual_output.h

@@ -37,6 +37,8 @@ public:
     VirtualOutput(QObject *parent = nullptr);
     ~VirtualOutput() override;
 
+    void init(const QPoint &logicalPosition, const QSize &pixelSize);
+
     QSize pixelSize() const override;
 
     void setGeometry(const QRect &geo);