Compositor: make XdgShellV6 reconfigure clients on mode-change

[ChangeLog][Compositor] Made the zxdg_shell_v6 compositor protocol
implementation re-issue configure requests with updated sizes when
the size or available geometry changes on an output used by a
maximized or fullscreen surface.

Change-Id: Ia446511f123e831b2d0a35ba202a6d092a841569
Reviewed-by: Johan Helsing <johan.helsing@qt.io>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/compositor/extensions/qwaylandxdgshellv6integration_p.h b/src/compositor/extensions/qwaylandxdgshellv6integration_p.h
index afb4964b9..5b56af89b 100644
--- a/src/compositor/extensions/qwaylandxdgshellv6integration_p.h
+++ b/src/compositor/extensions/qwaylandxdgshellv6integration_p.h
@@ -77,6 +77,9 @@ private Q_SLOTS:
     void handleFullscreenChanged();
     void handleActivatedChanged();
     void handleSurfaceSizeChanged();
+    void handleToplevelDestroyed();
+    void handleMaximizedSizeChanged();
+    void handleFullscreenSizeChanged();
 
 private:
     QWaylandQuickShellSurfaceItem *m_item = nullptr;
@@ -110,6 +113,13 @@ private:
         QSize initialWindowSize;
         QPointF initialPosition;
     } windowedGeometry;
+
+    struct {
+        QWaylandOutput *output = nullptr;
+        QMetaObject::Connection sizeChangedConnection; // Depending on whether maximized or fullscreen,
+                                                       // will be hooked to geometry-changed or available-
+                                                       // geometry-changed.
+    } nonwindowedState;
 };
 
 class XdgPopupV6Integration : public QWaylandQuickShellIntegration