C++ QTime::msecsSinceStartOfDay方法代码示例

void GPSDisplay::debugPositionUpdate()
{
#if MAPPER_DEVELOPMENT_BUILD
    if (! visible)
        return;

    QTime now = QTime::currentTime();
    float offset = now.msecsSinceStartOfDay() / (float)(10 * 1000);
    float accuracy = 12 + 7 * qSin(2 + offset);
    float altitude = 400 + 10 * qSin(1 + 0.1f * offset);

    MapCoordF coord(30 * qSin(0.5f * offset), 30 * qCos(0.53f * offset));
    emit mapPositionUpdated(coord, accuracy);

    if (georeferencing.isValid() && ! georeferencing.isLocal())
    {
        bool ok;
        LatLon latLon = georeferencing.toGeographicCoords(coord, &ok);
        if (ok)
        {
            emit latLonUpdated(latLon.latitude(), latLon.longitude(), altitude, accuracy);
        }
    }

    gps_updated = true;
    tracking_lost = false;
    has_valid_position = true;
    latest_gps_coord = coord;
    latest_gps_coord_accuracy = accuracy;
    updateMapWidget();
#endif
}

QVariant TrainModel::data(const QModelIndex& index, int role) const
{
    if (index.row() < 0 || index.row() >= trains_.size())
        return QVariant();

    const Caltrains::Train& train = trains_.at(index.row());

    if (role == TrainModel::TrainName) {
        QString trainTypeString;
        if (train.trainType == Caltrains::Local) {
           trainTypeString = "Local";
        }
        else if (train.trainType == Caltrains::Limited) {
            trainTypeString = "Limited";
        }
        else {
            trainTypeString = "Bullet";
        }

        QString trainNameString = train.trainNumber + " " + trainTypeString;
        return QVariant::fromValue(trainNameString);
    }
    else if (role == TrainModel::TimeRemaining) {
        QTime currentTime = QTime::currentTime();

        int timeRemaining = (
            train.departureTime.msecsSinceStartOfDay() - currentTime.msecsSinceStartOfDay()
        ) / (60*1000);

        if (timeRemaining < 0)
            timeRemaining += 60 * 24;

        QString timeRemainingText;
        if (timeRemaining == 0)
            timeRemainingText = "<1 min";
        else
            timeRemainingText = QString::number(timeRemaining) + " min";

        return QVariant::fromValue(timeRemainingText);
    }

    return QVariant();
}

bool LyricJson::loadLRC(const QString& path, const QString& musicPath)
{
	QFile infile(path);
	if (!infile.open(QIODevice::ReadOnly | QIODevice::Text))
	{
		return false;
	}

	_song.Clear();
	auto settings = Settings::getInstance();
	_song.general.maxline = 2;	// always 2 ?

	while (!infile.atEnd())
	{
		QByteArray lineByte = infile.readLine();
		QString line = QString::fromStdString(lineByte.toStdString()).trimmed();
		if (!line.startsWith("["))
		{
			continue;
		}
		if (!line.contains("]"))
		{
			continue;
		}
		int indexOfClose = line.indexOf("]");
		QString controlPart = line.mid(1, indexOfClose - 1).trimmed();
		if (controlPart.startsWith("ti:"))
		{
			_song.info.title = controlPart.right(controlPart.length() - 3); // no trim
		}
		else if (controlPart.startsWith("au:"))
		{
			_song.info.author = controlPart.right(controlPart.length() - 3); // no trim
		}
		else if (controlPart.startsWith("ar:"))
		{
			_song.info.artist = controlPart.right(controlPart.length() - 3); // no trim
		}
		else if (controlPart.startsWith("al:"))
		{
			_song.info.album = controlPart.right(controlPart.length() - 3); // no trim
		}
		else if (controlPart.startsWith("by:"))
		{
			_song.info.by = controlPart.right(controlPart.length() - 3); // no trim
		}
		else if (controlPart.startsWith("offset:"))
		{
			_song.general.offset = controlPart.right(controlPart.length() - 7).toLongLong();
		}
		else if (controlPart.at(0).isDigit())
		{
			QTime beginTime = QTime::fromString(controlPart + "0", "mm:ss.zzz");
			qint64 begin = beginTime.msecsSinceStartOfDay();

			KJsonSentence sentence;
			KJsonWord word;
			word.begin = begin;
			word.end = begin + settings->maximumDuration(); //std::numeric_limits<qint64>::max();
			word.text = line.right(line.length() - indexOfClose - 1);

			if (word.text.isEmpty())
			{
				int thisIndex = _song.lyric.sentencelist.count();
				if (thisIndex % _song.general.maxline == 0)
				{
					// skip
					continue;
				}
				else
				{
					// move up
					// skip multiple whites
					if (_song.lyric.sentencelist.last().wordlist.last().begin < 0)
					{
						continue;
					}
					else
					{
						word.end = word.begin + settings->minimumDuration();
					}
				}
			}

			if (!_song.lyric.sentencelist.empty())
			{
				KJsonWord& lastword = _song.lyric.sentencelist.last().wordlist.last();
				if (lastword.end - lastword.begin> settings->minimumDuration())
				{
					lastword.end = begin;// - lastword.begin;
				}
			}
			sentence.wordlist.append(word);
			_song.lyric.sentencelist.append(sentence);
		}
	}

	KJsonSong songCopy = _song;

	// first generate weak version
//.........这里部分代码省略.........

ClientController::ClientController(QObject *parent)
    : QObject{parent}
{
    QTime time = QTime::currentTime();
    qsrand((uint)(time.elapsed() + time.msecsSinceStartOfDay()));
}

// Converts a date/time value into msecs
static inline qint64 timeToMSecs(const QDate &date, const QTime &time)
{
    return ((date.toJulianDay() - JULIAN_DAY_FOR_EPOCH) * MSECS_PER_DAY)
           + time.msecsSinceStartOfDay();
}