C++ QTimer::remainingTime方法代码示例

int main(int argc, char *argv[])
{
    BrowserApplication a(argc, argv);
    //MainWindow w;
    BrowserMainWindow w;
    QRect maxRect;
    {
        QDesktopWidget desktop;
        maxRect = desktop.availableGeometry();
        maxRect.adjust(50,50,-50,-50);
    }
    w.setGeometry(maxRect);

    qDebug() << QApplication::applicationDirPath() << QApplication::applicationFilePath();
    {
        QPixmap splashPixmap(QApplication::applicationDirPath() + "/comm/conf/pics/splash.png");
        QSplashScreen splash(splashPixmap);
        splash.show();

        enum {
            splashTime = 1500
        };
        QTimer timer;
        timer.start(splashTime);
        do {
            a.processEvents();
            splash.showMessage(QString("Loading Process: %1%").arg(timer.remainingTime()*100.0/splashTime),Qt::AlignBottom);
        } while(timer.remainingTime() > 1);

        splash.finish(&w);
    }
    w.show();
    a.processEvents();
    return a.exec();
}

static int lua_sleep(lua_State *L)
{
    int m = static_cast<int> (luaL_checknumber(L,1));
    QTimer timer;

    timer.start(m);
    while(timer.remainingTime() > 0)
        qApp->processEvents();


    LuaManager::LuaControl.forceMapUpdate();

    return 0;
}

void tst_QTimer::remainingTime()
{
    TimerHelper helper;
    QTimer timer;

    connect(&timer, SIGNAL(timeout()), &helper, SLOT(timeout()));
    timer.start(200);

    QCOMPARE(helper.count, 0);

    QTest::qWait(50);
    QCOMPARE(helper.count, 0);

    int remainingTime = timer.remainingTime();
    QVERIFY2(qAbs(remainingTime - 150) < 50, qPrintable(QString::number(remainingTime)));
}

void RICTLMB2B30Widget::btWriteClicked()
{
    ui->labelRectangleStatus->close();

    if((!ui->rbDecimal->isChecked() && !ui->rbHexadecimal->isChecked())){
        SystemMessagesWidget::instance()->writeMessage(tr("Please, select the identification type."),
                                                       SystemMessagesWidget::KWarning,
                                                       SystemMessagesWidget::KDialogAndTextbox);
        return;
    }

    if(ui->leIdentification->text().isEmpty()){
        SystemMessagesWidget::instance()->writeMessage(tr("The identification must have at least 1 characters."),
                                                       SystemMessagesWidget::KWarning,
                                                       SystemMessagesWidget::KOnlyDialog);
        return;
    }

    QString message(tr("Wait... Trying to write."));
    SystemMessagesWidget::instance()->writeMessage(message, SystemMessagesWidget::KInfo);
    ui->labelRectangleStatus->setText(message);
    ui->labelRectangleStatus->setStyleSheet("QLabel { background-color : yellow;}");
    ui->labelRectangleStatus->show();

    //Process the events to repaint the widget with the new labelRectangleStatus.
    QCoreApplication::processEvents();

    ui->btWrite->setEnabled(false);

    // Mark the processing to check for a answers on reading.
    m_waitingForAnswer = true;

    if(m_connectionType == Settings::KNetwork){
        int interval = 500;
        QTimer timer;
        timer.setSingleShot(true);

        NetworkCommunication::instance()->sendFullRead(true);

        timer.start(interval);
        while(timer.remainingTime() > 0)
            ;

        sendCommand("L");

        timer.start(interval);
        while(timer.remainingTime() > 0)
            ;

        sendCommand("K0");

        timer.start(interval);
        while(timer.remainingTime() > 0)
            ;

        sendCommand("P" + m_identification);

    }else{
        /* Send the "L" command to the reader. This ensure that the reader operates in Line Mode.
         * It is needed to keep the reader responding for reads, to check the command responses
         * and the identification codes from transponder, automatically. */
        sendCommand("L");

        /* Send the "K0" command to the reader. This ensure that the reader understant it is working
         * with a 64-bits transponder, a K0. If the reader is not set with K0, it will not understand
         * the commands and will not answer, correctly. */
        sendCommand("K0");

        /* Send the "P" + identification code to the reader. This is the way to define a new code
         * to the trasponder. */
        sendCommand("P" + m_identification);
    }

    // Start the timeout to wait for a response. If the timer ends, define as failed.
    m_timeout.start();
}