kpowercontrol: new app for power management

Signed-off-by: Ivailo Monev <xakepa10@gmail.com>

kpowercontrol/CMakeLists.txt

@@ -0,0 +1,31 @@
+project(kpowercontrol)
+
+if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR})
+    find_package(KDE4 4.21.0 REQUIRED)
+    include(KDE4Defaults)
+    include_directories(${KDE4_INCLUDES})
+    add_definitions(${QT_DEFINITIONS} ${KDE4_DEFINITIONS})
+endif()
+
+########### next target ###############
+
+set(kpowercontrol_SRCS
+    main.cpp
+    kpowercontrol.cpp
+)
+
+add_executable(kpowercontrol ${kpowercontrol_SRCS})
+
+target_link_libraries(kpowercontrol
+    ${KDE4_KDEUI_LIBS}
+    ${KDE4_KPOWERMANAGER_LIBS}
+)
+
+install(TARGETS kpowercontrol ${INSTALL_TARGETS_DEFAULT_ARGS})
+
+########### next target ###############
+
+install(
+    PROGRAMS kpowercontrol.desktop
+    DESTINATION ${KDE4_XDG_APPS_INSTALL_DIR}
+)

kpowercontrol/kpowercontrol.cpp

@@ -0,0 +1,95 @@
+/*  This file is part of the KDE project
+    Copyright (C) 2022 Ivailo Monev <xakepa10@gmail.com>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License version 2, as published by the Free Software Foundation.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+
+#include "kpowercontrol.h"
+
+#include <QApplication>
+#include <QDBusConnectionInterface>
+#include <kactioncollection.h>
+#include <kcomponentdata.h>
+#include <klocale.h>
+#include <kglobal.h>
+#include <kaction.h>
+#include <kicon.h>
+#include <kdebug.h>
+
+KPowerControl::KPowerControl(QObject* parent)
+    : KStatusNotifierItem(parent),
+    m_menu(nullptr),
+    m_helpmenu(nullptr)
+{
+    setTitle(i18n("Power management"));
+    setCategory(KStatusNotifierItem::SystemServices);
+    setIconByName("preferences-system-power-management");
+    setStatus(KStatusNotifierItem::Passive);
+
+    m_menu = new KMenu(associatedWidget());
+    setContextMenu(m_menu);
+
+    QDBusConnectionInterface* sessionbusiface = QDBusConnection::sessionBus().interface();
+    if (sessionbusiface->isServiceRegistered("org.freedesktop.PowerManagement")) {
+        connect(
+            &m_powermanager, SIGNAL(profileChanged(QString)),
+            this, SLOT(slotProfileChanged(QString))
+        );
+
+        foreach (const QString &profile, m_powermanager.profiles()) {
+            KAction* profileaction = actionCollection()->addAction(QString::fromLatin1("profile_%1").arg(profile));
+            profileaction->setText(profile);
+            profileaction->setCheckable(true);
+            profileaction->setChecked(profile == m_powermanager.profile());
+            connect(profileaction, SIGNAL(triggered()), this, SLOT(slotChangeProfile()));
+            m_menu->addAction(profileaction);
+        }
+
+        m_menu->addSeparator();
+    } else {
+        setOverlayIconByName("dialog-error");
+        showMessage(i18n("Power management"), i18n("Power manager is not activer"), "dialog-error");
+    }
+
+    m_helpmenu = new KHelpMenu(associatedWidget(), KGlobal::mainComponent().aboutData());
+    m_menu->addMenu(m_helpmenu->menu());
+}
+
+KPowerControl::~KPowerControl()
+{
+}
+
+void KPowerControl::slotChangeProfile()
+{
+    KAction* profileaction = qobject_cast<KAction*>(sender());
+    if (m_powermanager.setProfile(profileaction->iconText())) {
+        // do not wait for the signal to be emited
+        slotProfileChanged(profileaction->iconText());
+    } else {
+        setOverlayIconByName("dialog-error");
+        showMessage(i18n("Power management"), i18n("Could not change power manager profile"), "dialog-error");
+    }
+}
+
+void KPowerControl::slotProfileChanged(const QString &profile)
+{
+    const QString profile_objectname = QString::fromLatin1("profile_%1").arg(profile);
+    foreach (QAction* qaction, actionCollection()->actions()) {
+        const QString qactionobjectname = qaction->objectName();
+        if (qactionobjectname.startsWith(QLatin1String("profile_"))) {
+            qaction->setChecked(qactionobjectname == profile_objectname);
+        }
+    }
+}

kpowercontrol/kpowercontrol.desktop

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+[Desktop Entry]
+Icon=preferences-system-power-management
+Name=KPowerControl
+GenericName=Power management
+Comment=A panel applet for power management
+Exec=kpowercontrol --icon '%i' --caption '%c'
+Terminal=false
+Type=Application
+Categories=Qt;KDE;System;
+X-KDE-StartupNotify=false

kpowercontrol/kpowercontrol.h

@@ -0,0 +1,44 @@
+/*  This file is part of the KDE project
+    Copyright (C) 2022 Ivailo Monev <xakepa10@gmail.com>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License version 2, as published by the Free Software Foundation.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+
+#ifndef KPOWERCONTROL_H
+#define KPOWERCONTROL_H
+
+#include <kstatusnotifieritem.h>
+#include <kmenu.h>
+#include <khelpmenu.h>
+#include <kpowermanager.h>
+
+class KPowerControl : public KStatusNotifierItem
+{
+    Q_OBJECT
+public:
+    KPowerControl(QObject* parent = nullptr);
+    ~KPowerControl();
+
+private Q_SLOTS:
+    void slotChangeProfile();
+    void slotProfileChanged(const QString &profile);
+
+private:
+    KMenu* m_menu;
+    KHelpMenu* m_helpmenu;
+    KPowerManager m_powermanager;
+};
+
+#endif // KPOWERCONTROL_H

kpowercontrol/main.cpp

@@ -0,0 +1,65 @@
+/*  This file is part of the KDE project
+    Copyright (C) 2022 Ivailo Monev <xakepa10@gmail.com>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License version 2, as published by the Free Software Foundation.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+
+#include <QDBusConnectionInterface>
+#include <kuniqueapplication.h>
+#include <klocale.h>
+#include <kcmdlineargs.h>
+#include <kaboutdata.h>
+#include <kdebug.h>
+
+#include "kpowercontrol.h"
+
+int main(int argc, char** argv)
+{
+    KAboutData aboutData(
+        "kpowercontrol", 0, ki18n("KPowerControl"),
+        "1.0.0", ki18n("A panel applet for power management."),
+        KAboutData::License_GPL_V2,
+        ki18n("(c) 2022 Ivailo Monev"),
+        KLocalizedString(),
+        "http://github.com/fluxer/katana"
+    );
+
+    aboutData.addAuthor(
+        ki18n("Ivailo Monev"),
+        ki18n("Maintainer"),
+        "xakepa10@gmail.com"
+    );
+    aboutData.setProgramIconName(QLatin1String("preferences-system-power-management"));
+
+    KCmdLineArgs::init(argc, argv, &aboutData);
+    KUniqueApplication::addCmdLineOptions();
+
+    KUniqueApplication kpowercontrolapp;
+    kpowercontrolapp.setQuitOnLastWindowClosed(false);
+    if (!KUniqueApplication::start()) {
+        kDebug() << "kpowercontrol is already running!";
+        return 0;
+    }
+
+    QDBusConnectionInterface* sessionbusiface = QDBusConnection::sessionBus().interface();
+    if (!sessionbusiface->isServiceRegistered("org.freedesktop.PowerManagement")) {
+        kDebug() << "Activating org.freedesktop.PowerManagement";
+        sessionbusiface->startService("org.freedesktop.PowerManagement");
+    }
+
+    KPowerControl kpowercontrol(&kpowercontrolapp);
+
+    return kpowercontrolapp.exec();
+}