Add request attaching a layer surface as toplevel parent

CMakeLists.txt

@@ -4,13 +4,13 @@
 cmake_minimum_required(VERSION 3.16)
 
 project(layershellqt)
-set(PROJECT_VERSION "6.3.0")
+set(PROJECT_VERSION "6.1.80")
 set(PROJECT_VERSION_MAJOR 6)
 
 set(CMAKE_C_STANDARD 99)
 
-set(QT_MIN_VERSION "6.7.0")
-set(KF6_MIN_VERSION "6.10.0")
+set(QT_MIN_VERSION "6.6.0")
+set(KF6_MIN_VERSION "6.2.0")
 set(KDE_COMPILERSETTINGS_LEVEL "5.82")
 
 set(CMAKE_CXX_STANDARD 20)
@@ -55,8 +55,8 @@ kde_clang_format(${ALL_CLANG_FORMAT_SOURCE_FILES})
 
 kde_configure_git_pre_commit_hook(CHECKS CLANG_FORMAT)
 
-ecm_set_disabled_deprecation_versions(QT 6.8.1
-    KF 6.9.0
+ecm_set_disabled_deprecation_versions(QT 6.5
+    KF 5.240
 )
 
 add_subdirectory(src)

src/CMakeLists.txt

@@ -4,13 +4,7 @@
 remove_definitions(-DQT_NO_SIGNALS_SLOTS_KEYWORDS)
 
 add_library(LayerShellQtInterface)
-
-if (Qt6_VERSION VERSION_GREATER_EQUAL "6.8.0")
-    set(private_code_option  "PRIVATE_CODE")
-endif()
-qt6_generate_wayland_protocol_client_sources(LayerShellQtInterface
-    ${private_code_option}
-    FILES
+qt6_generate_wayland_protocol_client_sources(LayerShellQtInterface FILES
     ${WaylandProtocols_DATADIR}/stable/xdg-shell/xdg-shell.xml
     ${WaylandProtocols_DATADIR}/staging/xdg-activation/xdg-activation-v1.xml
     ${CMAKE_CURRENT_SOURCE_DIR}/wlr-layer-shell-unstable-v1.xml

src/qwaylandlayershellintegration.cpp

@@ -12,12 +12,15 @@
 #include <QtWaylandClient/private/qwaylanddisplay_p.h>
 #include <QtWaylandClient/private/qwaylandwindow_p.h>
 
+#include <QPlatformSurfaceEvent>
+
 namespace LayerShellQt
 {
 QWaylandLayerShellIntegration::QWaylandLayerShellIntegration()
     : QWaylandShellIntegrationTemplate<QWaylandLayerShellIntegration>(5)
     , m_xdgActivation(new QWaylandXdgActivationV1)
 {
+    qGuiApp->installEventFilter(this);
 }
 
 QWaylandLayerShellIntegration::~QWaylandLayerShellIntegration()
@@ -32,4 +35,29 @@ QtWaylandClient::QWaylandShellSurface *QWaylandLayerShellIntegration::createShel
     return new QWaylandLayerSurface(this, window);
 }
 
+bool QWaylandLayerShellIntegration::eventFilter(QObject *watched, QEvent *event)
+{
+    if (event->type() == QEvent::PlatformSurface && static_cast<QPlatformSurfaceEvent *>(event)->surfaceEventType() == QPlatformSurfaceEvent::SurfaceCreated) {
+        QWindow *window = qobject_cast<QWindow *>(watched);
+        if (!window) {
+            return false;
+        }
+        auto child = static_cast<QtWaylandClient::QWaylandWindow *>(window->handle());
+        auto maybeSetParent = [child]() {
+            auto transientParent = child->window()->transientParent();
+            if (!transientParent) {
+                return;
+            }
+            if (auto layerParent = qobject_cast<QWaylandLayerSurface *>(static_cast<QtWaylandClient::QWaylandWindow *>(transientParent->handle())->shellSurface())) {
+                if (auto topevel = child->surfaceRole<xdg_toplevel>()) {
+                    layerParent->set_parent_of(topevel);
+                }
+            }
+        };
+        maybeSetParent();
+        connect(window, &QWindow::transientParentChanged, child, maybeSetParent);
+        connect(child, &QtWaylandClient::QWaylandWindow::surfaceRoleCreated, this, maybeSetParent);
+    }
+    return false;
+}
 }

src/qwaylandlayershellintegration_p.h

@@ -32,6 +32,7 @@ public:
     QtWaylandClient::QWaylandShellSurface *createShellSurface(QtWaylandClient::QWaylandWindow *window) override;
 
 private:
+    bool eventFilter(QObject *watched, QEvent *event) override;
     QScopedPointer<QWaylandXdgActivationV1> m_xdgActivation;
 };
 

src/qwaylandlayersurface.cpp

@@ -231,10 +231,8 @@ void QWaylandLayerSurface::sendExpose()
 {
 #if QT_VERSION < QT_VERSION_CHECK(6, 7, 0)
     window()->handleExpose(QRect(QPoint(), m_pendingSize));
-#elif QT_VERSION < QT_VERSION_CHECK(6, 9, 0)
-    window()->sendRecursiveExposeEvent();
 #else
-    window()->updateExposure();
+    window()->sendRecursiveExposeEvent();
 #endif
 }
 

src/wlr-layer-shell-unstable-v1.xml

@@ -403,5 +403,11 @@
       </description>
       <arg name="edge" type="uint"/>
     </request>
+
+    <request name="set_parent_of">
+      <description summary="assign this layer_surface as an xdg_toplevel parent">
+      </description>
+      <arg name="toplevel" type="object" interface="xdg_toplevel" />
+    </request>
   </interface>
 </protocol>