kdeconnect-kde/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 <QIcon>
#include <KLocalizedString>
#include <KPluginFactory>

#include "batterydbusinterface.h"

K_PLUGIN_FACTORY_WITH_JSON( KdeConnectPluginFactory, "kdeconnect_battery.json", registerPlugin< BatteryPlugin >(); )

Q_LOGGING_CATEGORY(KDECONNECT_PLUGIN_BATTERY, "kdeconnect.plugin.battery")

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

    //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()
{
    NetworkPacket np(PACKET_TYPE_BATTERY_REQUEST, {{"request",true}});
    sendPacket(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    // return outdated values) and that enabling it again instantiates a second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::receivePacket(const NetworkPacket& np)
{
    bool isCharging = np.get<bool>(QStringLiteral("isCharging"), false);
    int currentCharge = np.get<int>(QStringLiteral("currentCharge"), -1);
    int thresholdEvent = np.get<int>(QStringLiteral("thresholdEvent"), (int)ThresholdNone);

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

    if ( thresholdEvent == ThresholdBatteryLow && !isCharging ) {
        KNotification* notification = new KNotification(QStringLiteral("batteryLow"));
        notification->setIconName(QStringLiteral("battery-040"));
        notification->setComponentName(QStringLiteral("kdeconnect"));
        notification->setTitle(i18nc("device name: low battery", "%1: Low Battery", device()->name()));
        notification->setText(i18n("Battery at %1%", currentCharge));
        notification->sendEvent();
    }

    return true;

}

#include "batteryplugin.moc"