C++ (Cpp) QLocale::d Beispiele

Beispiel #1

Datei: qvalidator.cpp Projekt: BGmot/Qt

QValidator::State QDoubleValidatorPrivate::validateWithLocale(QString &input, QLocalePrivate::NumberMode numMode, const QLocale &locale) const
{
    Q_Q(const QDoubleValidator);
    QByteArray buff;
    if (!locale.d()->validateChars(input, numMode, &buff, q->dec))
        return QValidator::Invalid;

    if (buff.isEmpty())
        return QValidator::Intermediate;

    if (q->b >= 0 && buff.startsWith('-'))
        return QValidator::Invalid;

    if (q->t < 0 && buff.startsWith('+'))
        return QValidator::Invalid;

    bool ok, overflow;
    double i = QLocalePrivate::bytearrayToDouble(buff.constData(), &ok, &overflow);
    if (overflow)
        return QValidator::Invalid;
    if (!ok)
        return QValidator::Intermediate;

    if (i >= q->b && i <= q->t)
        return QValidator::Acceptable;

    if (notation == QDoubleValidator::StandardNotation) {
        double max = qMax(qAbs(q->b), qAbs(q->t));
        if (max < LLONG_MAX) {
            qlonglong n = pow10(numDigits(qlonglong(max))) - 1;
            if (qAbs(i) > n)
                return QValidator::Invalid;
        }
    }

    return QValidator::Intermediate;
}