support multi shells within Qt5

QWaylandLayerSurface pulled data from the Window on startup. The Window
pushed data into the QWaylandLayerSurface on changes. Having two
patterns is a bit off.

This moves everything to a single design, pulling from the public
interface. This allows us to drop a code path that meddles with
QWaylandWindow internals.

.gitlab-ci.yml

@@ -2,8 +2,6 @@
 # SPDX-License-Identifier: CC0-1.0
 
 include:
-  - https://invent.kde.org/sysadmin/ci-utilities/raw/master/gitlab-templates/reuse-lint.yml
   - https://invent.kde.org/sysadmin/ci-utilities/raw/master/gitlab-templates/linux.yml
   - https://invent.kde.org/sysadmin/ci-utilities/raw/master/gitlab-templates/freebsd.yml
   - https://invent.kde.org/sysadmin/ci-utilities/raw/master/gitlab-templates/linux-qt6.yml
-  - https://invent.kde.org/sysadmin/ci-utilities/raw/master/gitlab-templates/freebsd-qt6.yml

CMakeLists.txt

@@ -4,13 +4,13 @@
 cmake_minimum_required(VERSION 3.16)
 
 project(layershellqt)
-set(PROJECT_VERSION "5.27.4")
+set(PROJECT_VERSION "5.25.80")
 set(PROJECT_VERSION_MAJOR 5)
 
 set(CMAKE_C_STANDARD 99)
 
 set(QT_MIN_VERSION "5.15.2")
-set(KF5_MIN_VERSION "5.102.0")
+set(KF5_MIN_VERSION "5.94")
 set(KDE_COMPILERSETTINGS_LEVEL "5.82")
 
 set(CMAKE_CXX_STANDARD 17)
@@ -23,7 +23,6 @@ include(KDEInstallDirs)
 include(KDECMakeSettings)
 include(KDECompilerSettings NO_POLICY_SCOPE)
 include(ECMSetupVersion)
-include(ECMDeprecationSettings)
 include(ECMGenerateHeaders)
 include(CMakePackageConfigHelpers)
 include(FeatureSummary)
@@ -31,7 +30,6 @@ include(GenerateExportHeader)
 include(KDEClangFormat)
 include(ECMQtDeclareLoggingCategory)
 
-
 find_package(Qt${QT_MAJOR_VERSION} ${QT_MIN_VERSION} CONFIG REQUIRED COMPONENTS WaylandClient Qml)
 if (QT_MAJOR_VERSION EQUAL "5")
     find_package(Qt5XkbCommonSupport REQUIRED PRIVATE)
@@ -55,15 +53,10 @@ ecm_setup_version(${PROJECT_VERSION} VARIABLE_PREFIX LAYERSHELLQT
 
 file(GLOB_RECURSE ALL_CLANG_FORMAT_SOURCE_FILES *.cpp *.h)
 kde_clang_format(${ALL_CLANG_FORMAT_SOURCE_FILES})
-
-ecm_set_disabled_deprecation_versions(QT 5.15.2
-    KF 5.101
-)
-
 add_subdirectory(src)
 add_subdirectory(tests)
 
-set(CMAKECONFIG_INSTALL_DIR ${KDE_INSTALL_CMAKEPACKAGEDIR}/LayerShellQt)
+set(CMAKECONFIG_INSTALL_DIR ${KDE_INSTALL_LIBDIR}/cmake/LayerShellQt)
 install(EXPORT LayerShellQtTargets
         NAMESPACE LayerShellQt::
         DESTINATION ${CMAKECONFIG_INSTALL_DIR}

metainfo.yaml

@@ -1,6 +1,3 @@
-# SPDX-FileCopyrightText: None
-# SPDX-License-Identifier: CC0-1.0
-
 maintainer:
 - vladz
 description: Layer Shell Qt

src/interfaces/window.cpp

@@ -5,10 +5,11 @@
  */
 
 #include "window.h"
+#include "../qwaylandlayersurface_p.h"
+#include "../qwaylandlayershellintegration_p.h"
 #include <layershellqt_logging.h>
-
-#include <QPointer>
-#include <optional>
+#include <private/qwaylandshellsurface_p.h>
+#include <private/qwaylandwindow_p.h>
 
 using namespace LayerShellQt;
 
@@ -27,7 +28,7 @@ public:
     Window::KeyboardInteractivity keyboardInteractivity = Window::KeyboardInteractivityExclusive;
     Window::Layer layer = Window::LayerTop;
     QMargins margins;
-    std::optional<QPointer<QScreen>> desiredOutput;
+    QPointer<QScreen> desiredOutput;
 };
 
 static QMap<QWindow *, Window *> s_map;
@@ -104,12 +105,7 @@ Window::Layer Window::layer() const
 
 QScreen *Window::desiredOutput() const
 {
-    // Don't use .value_or here to avoid a temporary QPointer
-    if (d->desiredOutput.has_value()) {
-        return d->desiredOutput.value();
-    }
-
-    return d->parentWindow->screen();
+    return d->desiredOutput;
 }
 
 void Window::setDesiredOutput(QScreen *output)
@@ -122,6 +118,23 @@ Window::Window(QWindow *window)
     , d(new WindowPrivate(window))
 {
     s_map.insert(d->parentWindow, this);
+
+    //BEGIN Compat mode
+    window->winId();
+    window->setFlag(Qt::BypassWindowManagerHint);
+
+    auto ww = dynamic_cast<QtWaylandClient::QWaylandWindow *>(d->parentWindow->handle());
+    if (!ww) {
+        qCDebug(LAYERSHELLQT) << "window not a wayland window" << d->parentWindow;
+        return;
+    }
+    QWaylandLayerShellIntegration shellIntegration;
+    shellIntegration.initialize(ww->display());
+    shellIntegration.createShellSurface(ww);
+    // we can't block for configure events
+    // a round trip should mean we'll have one by the time we attach the buffer
+    ww->display()->forceRoundTrip();
+    //END compat mode
 }
 
 Window *Window::get(QWindow *window)

src/qwaylandlayersurface.cpp

@@ -37,7 +37,7 @@ QWaylandLayerSurface::QWaylandLayerSurface(QWaylandLayerShell *shell, QtWaylandC
     }
     init(shell->get_layer_surface(window->waylandSurface()->object(), output, interface->layer(), interface->scope()));
     connect(interface, &Window::layerChanged, this, [this, interface]() {
-        setLayer(interface->layer());
+        set_layer(interface->layer());
     });
 
     set_anchor(interface->anchors());

tests/main.cpp

@@ -51,7 +51,8 @@ class BasicWindow : public QRasterWindow
 
 int main(int argc, char **argv)
 {
-    Shell::useLayerShell();
+//    Shell::useLayerShell();
+    qputenv("QT_WAYLAND_USE_BYPASSWINDOWMANAGERHINT", "1");
 
     QGuiApplication app(argc, argv);