batterypublisher.cpp Example File
battery-charge/battery-publisher/batterypublisher.cpp

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    #include "batterypublisher.h"
    #include "ui_batterypublisher.h"

    #include <qvaluespacepublisher.h>

    #include <QTimer>

    BatteryPublisher::BatteryPublisher(QWidget *parent)
    :   QDialog(parent), ui(new Ui::BatteryPublisher), chargeTimer(0)
    {
        ui->setupUi(this);

        publisher = new QValueSpacePublisher("/power/battery");

        connect(ui->batteryCharge, SIGNAL(valueChanged(int)),
                this, SLOT(chargeChanged(int)));
        connect(ui->charging, SIGNAL(toggled(bool)),
                this, SLOT(chargingToggled(bool)));

        chargeChanged(ui->batteryCharge->value());
    }

    BatteryPublisher::~BatteryPublisher()
    {
        delete ui;
        delete publisher;
    }

    void BatteryPublisher::changeEvent(QEvent *e)
    {
        QDialog::changeEvent(e);
        switch (e->type()) {
        case QEvent::LanguageChange:
            ui->retranslateUi(this);
            break;
        default:
            break;
        }
    }

    void BatteryPublisher::timerEvent(QTimerEvent *)
    {
        int newCharge = ui->batteryCharge->value() + 1;
        ui->batteryCharge->setValue(newCharge);

        if (newCharge >= 100)
            ui->charging->setChecked(false);
    }

    void BatteryPublisher::chargeChanged(int newCharge)
    {
        publisher->setValue("charge", newCharge);
    }

    void BatteryPublisher::chargingToggled(bool charging)
    {
        ui->batteryCharge->setEnabled(!charging);
        publisher->setValue("charging", charging);

        if (charging)
            chargeTimer = startTimer(2000);
        else
            killTimer(chargeTimer);
    }