kdeconnect-kde/kded/plugins/battery/batteryplugin.cpp

/**
 * Copyright 2013 Albert Vaca <albertvaka@gmail.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License or (at your option) version 3 or any later version
 * accepted by the membership of KDE e.V. (or its successor approved
 * by the membership of KDE e.V.), which shall act as a proxy
 * defined in Section 14 of version 3 of the license.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "batteryplugin.h"

#include <KNotification>
#include <KIcon>
#include <KLocalizedString>

#include "../../kdebugnamespace.h"
#include "batterydbusinterface.h"

K_PLUGIN_FACTORY( KdeConnectPluginFactory, registerPlugin< BatteryPlugin >(); )
K_EXPORT_PLUGIN( KdeConnectPluginFactory("kdeconnect_battery", "kdeconnect-kded") )

BatteryPlugin::BatteryPlugin(QObject *parent, const QVariantList &args)
    : KdeConnectPlugin(parent, args)
    , batteryDbusInterface(new BatteryDbusInterface(parent))
{

    //TODO: Add battery reporting, could be based on:
    // http://kde-apps.org/content/show.php/battery+plasmoid+with+remaining+time?content=120309

}

void BatteryPlugin::connected()
{
    NetworkPackage np(PACKAGE_TYPE_BATTERY);
    np.set("request",true);
    device()->sendPackage(np);
}

BatteryPlugin::~BatteryPlugin()
{
    //FIXME: Qt dbus does not allow to remove an adaptor! (it causes a crash in
    // the next dbus access to its parent). The implication of not deleting this
    // is that disabling the plugin does not remove the interface (that will
    // return outdated values) and that enabling it again instantiates a second
    // adaptor. This is also a memory leak until the entire device is destroyed.

    //batteryDbusInterface->deleteLater();
}

bool BatteryPlugin::receivePackage(const NetworkPackage& np)
{
    bool isCharging = np.get<bool>("isCharging");
    int currentCharge = np.get<int>("currentCharge");
    int thresholdEvent = np.get<int>("thresholdEvent", (int)ThresholdNone);

    if (batteryDbusInterface->charge() != currentCharge
        || batteryDbusInterface->isCharging() != isCharging
    ) {
        batteryDbusInterface->updateValues(isCharging, currentCharge);
    }

    if ( thresholdEvent == ThresholdBatteryLow && !isCharging ) {
        KNotification* notification = new KNotification("batteryLow");
        notification->setPixmap(KIcon("battery-040").pixmap(48, 48));
        notification->setComponentData(KComponentData("kdeconnect", "kdeconnect-kded"));
        notification->setTitle(i18nc("device name: low battery", "%1: low battery", device()->name()));
        notification->setText(i18n("Battery at %1%", currentCharge));
        notification->sendEvent();
    }

    return true;

}