Client: Upgrade to xdg-output-unstable-v1 version 3

[ChangeLog][QPA plugin] xdg-output-unstable-v1 version 3 is now supported.

Change-Id: I054b2946e86175eabe76731bac94e5f287c4ee58
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>

src/plugins/platforms/wayland/qwaylanddisplay.cpp

@@ -351,7 +351,7 @@ void QWaylandDisplay::registry_global(uint32_t id, const QString &interface, uin
             forceRoundTrip();
         }
     } else if (interface == QLatin1String("zxdg_output_manager_v1")) {
-        mXdgOutputManager.reset(new QtWayland::zxdg_output_manager_v1(registry, id, qMin(2, int(version))));
+        mXdgOutputManager.reset(new QWaylandXdgOutputManagerV1(this, id, version));
         for (auto *screen : qAsConst(mWaitingScreens))
             screen->initXdgOutput(xdgOutputManager());
         forceRoundTrip();

src/plugins/platforms/wayland/qwaylanddisplay_p.h

@@ -81,7 +81,6 @@ class QPlatformPlaceholderScreen;
 namespace QtWayland {
     class qt_surface_extension;
     class zwp_text_input_manager_v2;
-    class zxdg_output_manager_v1;
 }
 
 namespace QtWaylandClient {
@@ -91,6 +90,7 @@ Q_WAYLAND_CLIENT_EXPORT Q_DECLARE_LOGGING_CATEGORY(lcQpaWayland);
 class QWaylandInputDevice;
 class QWaylandBuffer;
 class QWaylandScreen;
+class QWaylandXdgOutputManagerV1;
 class QWaylandClientBufferIntegration;
 class QWaylandWindowManagerIntegration;
 class QWaylandDataDeviceManager;
@@ -165,7 +165,7 @@ public:
     QWaylandTouchExtension *touchExtension() const { return mTouchExtension.data(); }
     QtWayland::zwp_text_input_manager_v2 *textInputManager() const { return mTextInputManager.data(); }
     QWaylandHardwareIntegration *hardwareIntegration() const { return mHardwareIntegration.data(); }
-    QtWayland::zxdg_output_manager_v1 *xdgOutputManager() const { return mXdgOutputManager.data(); }
+    QWaylandXdgOutputManagerV1 *xdgOutputManager() const { return mXdgOutputManager.data(); }
 
     bool usingInputContextFromCompositor() const { return mUsingInputContextFromCompositor; }
 
@@ -255,7 +255,7 @@ private:
 #endif
     QScopedPointer<QtWayland::zwp_text_input_manager_v2> mTextInputManager;
     QScopedPointer<QWaylandHardwareIntegration> mHardwareIntegration;
-    QScopedPointer<QtWayland::zxdg_output_manager_v1> mXdgOutputManager;
+    QScopedPointer<QWaylandXdgOutputManagerV1> mXdgOutputManager;
     QSocketNotifier *mReadNotifier = nullptr;
     int mFd = -1;
     int mWritableNotificationFd = -1;

src/plugins/platforms/wayland/qwaylandscreen.cpp

@@ -53,6 +53,12 @@ QT_BEGIN_NAMESPACE
 
 namespace QtWaylandClient {
 
+QWaylandXdgOutputManagerV1::QWaylandXdgOutputManagerV1(QWaylandDisplay* display, uint id, uint version)
+    : QtWayland::zxdg_output_manager_v1(display->wl_registry(), id, qMin(3u, version))
+    , m_version(qMin(3u, version))
+{
+}
+
 QWaylandScreen::QWaylandScreen(QWaylandDisplay *waylandDisplay, int version, uint32_t id)
     : QtWayland::wl_output(waylandDisplay->wl_registry(), id, qMin(version, 2))
     , m_outputId(id)
@@ -95,7 +101,7 @@ void QWaylandScreen::maybeInitialize()
         updateXdgOutputProperties();
 }
 
-void QWaylandScreen::initXdgOutput(QtWayland::zxdg_output_manager_v1 *xdgOutputManager)
+void QWaylandScreen::initXdgOutput(QWaylandXdgOutputManagerV1 *xdgOutputManager)
 {
     Q_ASSERT(xdgOutputManager);
     if (zxdg_output_v1::isInitialized())
@@ -271,11 +277,16 @@ void QWaylandScreen::output_scale(int32_t factor)
 void QWaylandScreen::output_done()
 {
     mOutputDone = true;
-    if (mInitialized)
+    if (zxdg_output_v1::isInitialized() && mWaylandDisplay->xdgOutputManager()->version() >= 3)
+        mXdgOutputDone = true;
+    if (mInitialized) {
         updateOutputProperties();
-    else
+        if (zxdg_output_v1::isInitialized())
+            updateXdgOutputProperties();
+    } else {
         maybeInitialize();
     }
+}
 
 void QWaylandScreen::updateOutputProperties()
 {
@@ -325,6 +336,9 @@ void QWaylandScreen::zxdg_output_v1_logical_size(int32_t width, int32_t height)
 
 void QWaylandScreen::zxdg_output_v1_done()
 {
+    if (Q_UNLIKELY(mWaylandDisplay->xdgOutputManager()->version() >= 3))
+        qWarning(lcQpaWayland) << "zxdg_output_v1.done received on version 3 or newer, this is most likely a bug in the compositor";
+
     mXdgOutputDone = true;
     if (mInitialized)
         updateXdgOutputProperties();

src/plugins/platforms/wayland/qwaylandscreen_p.h

@@ -64,6 +64,14 @@ namespace QtWaylandClient {
 class QWaylandDisplay;
 class QWaylandCursor;
 
+class Q_WAYLAND_CLIENT_EXPORT QWaylandXdgOutputManagerV1 : public QtWayland::zxdg_output_manager_v1 {
+public:
+    QWaylandXdgOutputManagerV1(QWaylandDisplay *display, uint id, uint version);
+    uint version() const { return m_version; }
+private:
+    uint m_version = 1; // TODO: remove when we upgrade minimum libwayland requriement to 1.10
+};
+
 class Q_WAYLAND_CLIENT_EXPORT QWaylandScreen : public QPlatformScreen, QtWayland::wl_output, QtWayland::zxdg_output_v1
 {
 public:
@@ -72,7 +80,7 @@ public:
 
     void maybeInitialize();
 
-    void initXdgOutput(QtWayland::zxdg_output_manager_v1 *xdgOutputManager);
+    void initXdgOutput(QWaylandXdgOutputManagerV1 *xdgOutputManager);
 
     QWaylandDisplay *display() const;