Make it build against Qt 6 and KF 6

CMakeLists.txt

@@ -14,7 +14,7 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 include(FeatureSummary)
 
-find_package(ECM ${KF5_MIN_VERSION} REQUIRED NO_MODULE)
+find_package(ECM ${KF_MIN_VERSION} REQUIRED NO_MODULE)
 set_package_properties(ECM PROPERTIES TYPE REQUIRED
     DESCRIPTION "Extra CMake Modules."
     URL "https://invent.kde.org/frameworks/extra-cmake-modules")
@@ -72,7 +72,13 @@ if (BUILD_KSYSTEMSTATS)
 endif()
 
 if (BUILD_KINFOCENTER)
-    find_package(KF${QT_MAJOR_VERSION} ${KF_MIN_VERSION} REQUIRED COMPONENTS CoreAddons Declarative Package)
+    find_package(KF${QT_MAJOR_VERSION} ${KF_MIN_VERSION} REQUIRED COMPONENTS CoreAddons Package)
+
+    if (QT_MAJOR_VERSION STREQUAL "6")
+        find_package(KF6 ${KF_MIN_VERSION} REQUIRED COMPONENTS KCMUtils)
+    else()
+        find_package(KF5 ${KF_MIN_VERSION} REQUIRED COMPONENTS Declarative)
+    endif()
 
     find_package(Qt${QT_MAJOR_VERSION}QuickControls2 ${QT_MIN_VERSION})
     set_package_properties(Qt${QT_MAJOR_VERSION}QuickControls2 PROPERTIES

README.md

@@ -169,7 +169,7 @@ The following development files are required (as well as their respective indire
 #### infocenter
 
 * KCoreAddons (from KDE Frameworks
-* KDeclarative (from KDE Frameworks)
+* KDeclarative (from KDE Frameworks 5) or KCMUtils (from KDE Frameworks 6)
 * KSysGuard (from KDE Plasma)
 * libsensors
 * QML module for Kirigami
@@ -231,7 +231,6 @@ You can find examples for both C++ and QML in the [examples](examples/) director
 
 ## :building_construction: To Do
 
-* The project should be prepared for a Qt 6 build, however this has not been attempted, specifically as KDE Frameworks 6 is still in development.
 * Running clang-tidy, clazy, and friends on CI
 * None of the EV-related readouts are implemented.
 * None of the charging configuration settings (`getChargeConfigInfo`, `updateChargeConfigInfo`, `getDisChargeConfigInfo`, `updateDisChargeConfigInfo`) can be read or altered.

src/infocenter/CMakeLists.txt

@@ -1,17 +1,31 @@
 # SPDX-License-Identifier: BSD-2-Clause
 # SPDX-FileCopyrightText: 2023 Kai Uwe Broulik <[email protected]>
 
-kcoreaddons_add_plugin(kcm_qalphacloud SOURCES
+if(QT_MAJOR_VERSION STREQUAL "6")
+  kcmutils_add_qml_kcm(kcm_qalphacloud
+    DISABLE_DESKTOP_FILE_GENERATION
+
+    SOURCES
+    kcm.cpp
+    kcm.h
+
+    INSTALL_NAMESPACE
+    "plasma/kcms/kinfocenter"
+  )
+
+  target_link_libraries(kcm_qalphacloud KF6::KCMUtilsQuick)
+else()
+  kcoreaddons_add_plugin(kcm_qalphacloud
+    SOURCES
     kcm.cpp
     kcm.h
 
     INSTALL_NAMESPACE
     "plasma/kcms/kinfocenter"
-)
+  )
 
-target_link_libraries(kcm_qalphacloud
-  KF${QT_MAJOR_VERSION}::QuickAddons
-  QAlphaCloud
-)
+  target_link_libraries(kcm_qalphacloud KF5::QuickAddons)
+endif()
 
+target_link_libraries(kcm_qalphacloud QAlphaCloud)
 kpackage_install_package(package kcm_qalphacloud kcms)

src/infocenter/kcm.cpp

@@ -48,11 +48,23 @@ QVariant BatterySocScaleProxyModel::data(const QModelIndex &index, int role) con
 }
 
 KCMAlphaCloud::KCMAlphaCloud(QObject *parent, const KPluginMetaData &data, const QVariantList &args)
+#if QT_VERSION_MAJOR == 6
+    : KQuickConfigModule(parent, data)
+#else
     : KQuickAddons::ConfigModule(parent, data, args)
+#endif
 {
+#if QT_VERSION_MAJOR == 6
+    Q_UNUSED(args);
+#endif
+
     qmlRegisterType<BatterySocScaleProxyModel>("de.broulik.qalphacloud.private.kcm", 1, 0, "BatterySocScaleProxyModel");
 
+#if QT_VERSION_MAJOR == 6
+    setButtons(KQuickConfigModule::NoAdditionalButton);
+#else
     setButtons(KQuickAddons::ConfigModule::NoAdditionalButton);
+#endif
 }
 
 bool KCMAlphaCloud::presentationBuild() const

src/infocenter/kcm.h

@@ -5,7 +5,13 @@
 
 #pragma once
 
+#include <qglobal.h>
+
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+#include <KQuickConfigModule>
+#else
 #include <KQuickAddons/ConfigModule>
+#endif
 
 #include <QIdentityProxyModel>
 
@@ -30,14 +36,18 @@ class BatterySocScaleProxyModel : public QIdentityProxyModel
     qreal m_factor = 0;
 };
 
+#if QT_VERSION_MAJOR == 6
+class KCMAlphaCloud : public KQuickConfigModule
+#else
 class KCMAlphaCloud : public KQuickAddons::ConfigModule
+#endif
 {
     Q_OBJECT
 
     Q_PROPERTY(bool presentationBuild READ presentationBuild CONSTANT)
 
 public:
-    explicit KCMAlphaCloud(QObject *parent, const KPluginMetaData &data, const QVariantList &args);
+    explicit KCMAlphaCloud(QObject *parent, const KPluginMetaData &metaData, const QVariantList &args);
 
     bool presentationBuild() const;
 };