Add QWaylandApplication::xkbContext()

It is necessary for the apps that want to manually parse the stream of events
from wl_keyborad.

Change-Id: I8229ae6e43640d0e7b9597f5f7b35cba59db0f64
Reviewed-by: David Edmundson <davidedmundson@kde.org>

src/gui/configure.cmake

@@ -1245,7 +1245,7 @@ qt_feature("system-xcb-xinput" PRIVATE SYSTEM_LIBRARY
     DISABLE INPUT_bundled_xcb_xinput STREQUAL 'yes'
     EMIT_IF QT_FEATURE_xcb
 )
-qt_feature("xkbcommon" PRIVATE
+qt_feature("xkbcommon" PUBLIC
     LABEL "xkbcommon"
     CONDITION XKB_FOUND
 )

src/gui/kernel/qguiapplication_platform.h

@@ -30,6 +30,11 @@ struct wl_seat;
 struct wl_keyboard;
 struct wl_pointer;
 struct wl_touch;
+
+#if QT_CONFIG(xkbcommon)
+struct xkb_context;
+#endif
+
 #endif
 
 #if defined(Q_OS_VISIONOS) || defined(Q_QDOC)
@@ -74,6 +79,9 @@ struct Q_GUI_EXPORT QWaylandApplication
     virtual wl_touch *touch() const = 0;
     virtual uint lastInputSerial() const = 0;
     virtual wl_seat *lastInputSeat() const = 0;
+#if QT_CONFIG(xkbcommon)
+    virtual xkb_context *xkbContext() const = 0;
+#endif
 };
 #endif
 

src/gui/platform/unix/qunixnativeinterface.cpp

@@ -292,6 +292,11 @@ QT_DEFINE_PRIVATE_NATIVE_INTERFACE(QVxKeyMapper);
     \return the seat associated with the default input device.
 */
 
+/*!
+    \fn struct xkb_context *QNativeInterface::QWaylandApplication::xkbContext() const
+    \return the XKB context associated with the application.
+*/
+
 QT_DEFINE_NATIVE_INTERFACE(QWaylandApplication);
 
 /*!

src/plugins/platforms/wayland/qwaylandnativeinterface.cpp

@@ -64,6 +64,11 @@ void *QWaylandNativeInterface::nativeResourceForIntegration(const QByteArray &re
             return touch->wl_touch();
         return nullptr;
     }
+#if QT_CONFIG(xkbcommon)
+    if (lowerCaseResource == "xkb_context") {
+        return m_integration->display()->xkbContext();
+    }
+#endif
     if (lowerCaseResource == "serial")
         return reinterpret_cast<void *>(quintptr(m_integration->display()->defaultInputDevice()->serial()));
 
@@ -126,6 +131,13 @@ wl_seat *QtWaylandClient::QWaylandNativeInterface::lastInputSeat() const
     return nullptr;
 }
 
+#if QT_CONFIG(xkbcommon)
+struct xkb_context *QtWaylandClient::QWaylandNativeInterface::xkbContext() const
+{
+    return m_integration->display()->xkbContext();
+}
+#endif
+
 void *QWaylandNativeInterface::nativeResourceForWindow(const QByteArray &resourceString, QWindow *window)
 {
     QByteArray lowerCaseResource = resourceString.toLower();

src/plugins/platforms/wayland/qwaylandnativeinterface_p.h

@@ -62,6 +62,9 @@ public:
     wl_touch *touch() const override;
     uint lastInputSerial() const override;
     wl_seat *lastInputSeat() const override;
+#if QT_CONFIG(xkbcommon)
+    struct xkb_context *xkbContext() const override;
+#endif
 
 private:
     static void setWindowMargins(QWindow *window, const QMargins &margins);