[wayland] Introduce property to identify lockscreen and inputmethods

This introduces Toplevel::isLockScreen() and Toplevel::isInputMethod(),
this can be used to allow only lockscreen/inputmethods to get input
events and shown when screen is locked.

shell_client.h

@@ -101,8 +101,8 @@ public:
         return m_windowId;
     }
     bool isInternal() const;
-    bool isLockScreen() const;
+    bool isLockScreen() const override;
-    bool isInputMethod() const;
+    bool isInputMethod() const override;
     QWindow *internalWindow() const {
         return m_internalWindow;
     }

toplevel.h

@@ -252,6 +252,9 @@ public:
     bool isComboBox() const;
     bool isDNDIcon() const;
 
+    virtual bool isLockScreen() const;
+    virtual bool isInputMethod() const;
+
     virtual int desktop() const = 0;
     virtual QStringList activities() const = 0;
     bool isOnDesktop(int d) const;
@@ -650,6 +653,16 @@ inline bool Toplevel::isDNDIcon() const
     return windowType() == NET::DNDIcon;
 }
 
+inline bool Toplevel::isLockScreen() const
+{
+    return false;
+}
+
+inline bool Toplevel::isInputMethod() const
+{
+    return false;
+}
+
 inline QRegion Toplevel::damage() const
 {
     return damage_region;

wayland_server.cpp

@@ -133,6 +133,9 @@ void WaylandServer::init(const QByteArray &socketName, InitalizationFlags flags)
                 // skip Xwayland clients, those are created using standard X11 way
                 return;
             }
+            if (surface->client() == m_screenLockerClientConnection && !isScreenLocked()) {
+                ScreenLocker::KSldApp::self()->lockScreenShown();
+            }
             auto client = new ShellClient(surface);
             if (auto c = Compositor::self()) {
                 connect(client, &Toplevel::needsRepaint, c, &Compositor::scheduleRepaint);
@@ -480,4 +483,9 @@ quint16 WaylandServer::createClientId(ClientConnection *c)
     return id;
 }
 
+bool WaylandServer::isScreenLocked() const
+{
+    return ScreenLocker::KSldApp::self()->lockState() == ScreenLocker::KSldApp::Locked;
+}
+
 }

wayland_server.h

@@ -117,6 +117,11 @@ public:
     int createInputMethodConnection();
     void destroyInputMethodConnection();
 
+    /**
+     * @returns true if screen is locked.
+     **/
+    bool isScreenLocked() const;
+
     void createInternalConnection();
     void destroyInternalConnection();
     void initWorkspace();