qspinbox.cpp

奇趣公司比较新的qt/emd版本

        if (number == max) // needed for INT_MAX
            break;
    }
    return false;
}

/*!
    \internal Multi purpose function that parses input, sets state to
    the appropriate state and returns the value it will be interpreted
    as.
*/

QVariant QSpinBoxPrivate::validateAndInterpret(QString &input, int &pos,
                                               QValidator::State &state) const
{
    if (cachedText == input && !input.isEmpty()) {
        state = cachedState;
        QSBDEBUG() << "cachedText was" << "'" << cachedText << "'" << "state was "
                   << state << " and value was " << cachedValue;

        return cachedValue;
    }
    const int max = maximum.toInt();
    const int min = minimum.toInt();

    QString copy = stripped(input, &pos);
    QSBDEBUG() << "input" << input << "copy" << copy;
    state = QValidator::Acceptable;
    int num = min;

    if (max != min && (copy.isEmpty()
                       || (min < 0 && copy == QLatin1String("-"))
                       || (min >= 0 && copy == QLatin1String("+")))) {
        state = QValidator::Intermediate;
        QSBDEBUG() << __FILE__ << __LINE__<< "num is set to" << num;
    } else if (copy.startsWith(QLatin1String("-")) && min >= 0) {
        state = QValidator::Invalid; // special-case -0 will be interpreted as 0 and thus not be invalid with a range from 0-100
    } else {
        bool ok = false;
        bool removedThousand = false;
        num = QLocale().toInt(copy, &ok, 10);
        if (!ok && copy.contains(thousand) && (max >= 1000 || min <= -1000)) {
            const int s = copy.size();
            copy.remove(thousand);
            pos = qMax(0, pos - (s - copy.size()));
            removedThousand = true;
            num = QLocale().toInt(copy, &ok, 10);
        }
        QSBDEBUG() << __FILE__ << __LINE__<< "num is set to" << num;
        if (!ok) {
            state = QValidator::Invalid;
        } else if (num >= min && num <= max) {
            state = removedThousand ? QValidator::Intermediate : QValidator::Acceptable;
        } else if (max == min) {
            state = QValidator::Invalid;
        } else {
            if ((num >= 0 && num > max) || (num < 0 && num < min)) {
                state = QValidator::Invalid;
                QSBDEBUG() << __FILE__ << __LINE__<< "state is set to Invalid";
            } else {
                state = isIntermediateValue(copy) ? QValidator::Intermediate : QValidator::Invalid;
                QSBDEBUG() << __FILE__ << __LINE__<< "state is set to "
                           << (state == QValidator::Intermediate ? "Intermediate" : "Acceptable");
            }
        }
    }
    if (state != QValidator::Acceptable)
        num = max > 0 ? min : max;
    input = prefix + copy + suffix;
    cachedText = input;
    cachedState = state;
    cachedValue = QVariant((int)num);

    QSBDEBUG() << "cachedText is set to '" << cachedText << "' state is set to "
               << state << " and value is set to " << cachedValue;
    return cachedValue;
}

// --- QDoubleSpinBoxPrivate ---

/*!
    \internal
    Constructs a QSpinBoxPrivate object
*/

QDoubleSpinBoxPrivate::QDoubleSpinBoxPrivate()
{
    minimum = QVariant(0.0);
    maximum = QVariant(99.99);
    value = minimum;
    singleStep = QVariant(1.0);
    decimals = 2;
    type = QVariant::Double;
    const QString str = QLocale().toString(4567.1);
    if (str.size() == 6) {
        delimiter = str.at(4);
        thousand = QChar((ushort)0);
    } else if (str.size() == 7) {
        thousand = str.at(1);
        delimiter = str.at(5);
    }
    Q_ASSERT(!delimiter.isNull());
}

/*!
    \internal
    \reimp
*/

void QDoubleSpinBoxPrivate::emitSignals(EmitPolicy ep, const QVariant &old)
{
    Q_Q(QDoubleSpinBox);
    if (ep != NeverEmit) {
        pendingEmit = false;
        if (ep == AlwaysEmit || value != old) {
            emit q->valueChanged(edit->displayText());
            emit q->valueChanged(value.toDouble());
        }
    }
}


bool QDoubleSpinBoxPrivate::isIntermediateValue(const QString &str) const
{
    QSBDEBUG() << "input is" << str << minimum << maximum;
    qint64 dec = 1;
    for (int i=0; i<decimals; ++i)
        dec *= 10;

    const QLatin1Char dot('.');

    // I know QString::number() uses CLocale so I use dot
    const QString minstr = QString::number(minimum.toDouble(), 'f', decimals);
    qint64 min_left = minstr.left(minstr.indexOf(dot)).toLongLong();
    qint64 min_right = minstr.mid(minstr.indexOf(dot) + 1).toLongLong();

    const QString maxstr = QString::number(maximum.toDouble(), 'f', decimals);
    qint64 max_left = maxstr.left(maxstr.indexOf(dot)).toLongLong();
    qint64 max_right = maxstr.mid(maxstr.indexOf(dot) + 1).toLongLong();

    const int dotindex = str.indexOf(delimiter);
    const bool negative = maximum.toDouble() < 0;
    qint64 left = 0, right = 0;
    bool doleft = true;
    bool doright = true;
    if (dotindex == -1) {
        left = str.toLongLong();
        doright = false;
    } else if (dotindex == 0 || (dotindex == 1 && str.at(0) == QLatin1Char('+'))) {
        if (negative) {
            QSBDEBUG() << __FILE__ << __LINE__ << "returns false";
            return false;
        }
        doleft = false;
        right = str.mid(dotindex + 1).toLongLong();
    } else if (dotindex == 1 && str.at(0) == QLatin1Char('-')) {
        if (!negative) {
            QSBDEBUG() << __FILE__ << __LINE__ << "returns false";
            return false;
        }
        doleft = false;
        right = str.mid(dotindex + 1).toLongLong();
    } else {
        left = str.left(dotindex).toLongLong();
        if (dotindex == str.size() - 1) {
            doright = false;
        } else {
            right = str.mid(dotindex + 1).toLongLong();
        }
    }
    if ((left >= 0 && max_left < 0 && !str.startsWith(QLatin1Char('-'))) || (left < 0 && min_left >= 0)) {
        QSBDEBUG("returns false 0");
        return false;
    }

    qint64 match = min_left;
    if (doleft && !isIntermediateValueHelper(left, min_left, max_left, &match)) {
        QSBDEBUG() << __FILE__ << __LINE__ << "returns false";
        return false;
    }
    if (doright) {
        QSBDEBUG("match %lld min_left %lld max_left %lld", match, min_left, max_left);
        if (!doleft) {
            if (min_left == max_left) {
                const bool ret = isIntermediateValueHelper(qAbs(left),
                                                           negative ? max_right : min_right,
                                                           negative ? min_right : max_right);
                QSBDEBUG() << __FILE__ << __LINE__ << "returns" << ret;
                return ret;
            } else if (qAbs(max_left - min_left) == 1) {
                const bool ret = isIntermediateValueHelper(qAbs(left), min_right, negative ? 0 : dec)
                                 || isIntermediateValueHelper(qAbs(left), negative ? dec : 0, max_right);
                QSBDEBUG() << __FILE__ << __LINE__ << "returns" << ret;
                return ret;
            } else {
                const bool ret = isIntermediateValueHelper(qAbs(left), 0, dec);
                QSBDEBUG() << __FILE__ << __LINE__ << "returns" << ret;
                return ret;
            }
        }
        if (match != min_left) {
            min_right = negative ? dec : 0;
        }
        if (match != max_left) {
            max_right = negative ? 0 : dec;
        }
        qint64 tmpl = negative ? max_right : min_right;
        qint64 tmpr = negative ? min_right : max_right;
        const bool ret = isIntermediateValueHelper(right, tmpl, tmpr);
        QSBDEBUG() << __FILE__ << __LINE__ << "returns" << ret;
        return ret;
    }
    QSBDEBUG() << __FILE__ << __LINE__ << "returns true";
    return true;
}

/*!
    \internal
    \reimp
*/
QVariant QDoubleSpinBoxPrivate::valueFromText(const QString &f) const
{
    Q_Q(const QDoubleSpinBox);
    return QVariant(q->valueFromText(f));
}

/*!
    \internal
    Rounds to a double value that is restricted to decimals.
    E.g. // decimals = 2

    round(5.555) => 5.56
    */

double QDoubleSpinBoxPrivate::round(double value) const
{
    const QString strDbl = QString::number(value, 'f', decimals);
    return strDbl.toDouble();
}


/*!
    \internal Multi purpose function that parses input, sets state to
    the appropriate state and returns the value it will be interpreted
    as.
*/

QVariant QDoubleSpinBoxPrivate::validateAndInterpret(QString &input, int &pos,
                                                     QValidator::State &state) const
{
    if (cachedText == input && !input.isEmpty()) {
        state = cachedState;
        QSBDEBUG() << "cachedText was" << "'" << cachedText << "'" << "state was "
                   << state << " and value was " << cachedValue;
        return cachedValue;
    }
    const double max = maximum.toDouble();
    const double min = minimum.toDouble();

    QString copy = stripped(input, &pos);
    QSBDEBUG() << "input" << input << "copy" << copy;
    int len = copy.size();
    double num = min;
    const bool plus = max >= 0;
    const bool minus = min <= 0;

    switch (len) {
    case 0:
        state = max != min ? QValidator::Intermediate : QValidator::Invalid;
        goto end;
    case 1:
        if (copy.at(0) == delimiter
            || (plus && copy.at(0) == QLatin1Char('+'))
            || (minus && copy.at(0) == QLatin1Char('-'))) {
            state = QValidator::Intermediate;
            goto end;
        }
        break;
    case 2:
        if (copy.at(1) == delimiter
            && ((plus && copy.at(0) == QLatin1Char('+')) || (minus && copy.at(0) == QLatin1Char('-')))) {
            state = QValidator::Intermediate;
            goto end;
        }
        break;
    default: break;
    }

    if (copy.at(0) == thousand) {
        QSBDEBUG() << __FILE__ << __LINE__<< "state is set to Invalid";
        state = QValidator::Invalid;
        goto end;
    } else if (len > 1) {
        const int dec = copy.indexOf(delimiter);
        if (dec != -1) {
            if (dec + 1 < copy.size() && copy.at(dec + 1) == delimiter && pos == dec + 1) {
                copy.remove(dec + 1, 1); // typing a delimiter when you are on the delimiter
            } // should be treated as typing right arrow

            if (copy.size() - dec > decimals + 1) {
                QSBDEBUG() << __FILE__ << __LINE__<< "state is set to Invalid";
                state = QValidator::Invalid;
                goto end;
            }
            for (int i=dec + 1; i<copy.size(); ++i) {
                if (copy.at(i).isSpace() || copy.at(i) == thousand) {
                    QSBDEBUG() << __FILE__ << __LINE__<< "state is set to Invalid";
                    state = QValidator::Invalid;
                    goto end;
                }
            }
        } else {
            const QChar &last = copy.at(len - 1);
            const QChar &secondLast = copy.at(len - 2);
            if ((last == thousand || last.isSpace())
                && (secondLast == thousand || secondLast.isSpace())) {
                state = QValidator::Invalid;
                QSBDEBUG() << __FILE__ << __LINE__<< "state is set to Invalid";
                goto end;
            } else if (last.isSpace() && (!thousand.isSpace() || secondLast.isSpace())) {
                state = QValidator::Invalid;
                QSBDEBUG() << __FILE__ << __LINE__<< "state is set to Invalid";
                goto end;
            }
        }
    }

    {
        bool ok = false;
        QLocale loc;
        num = loc.toDouble(copy, &ok);
        QSBDEBUG() << __FILE__ << __LINE__ << loc << copy << num << ok;
        bool notAcceptable = false;

        if (!ok) {
            if (thousand.isPrint()) {
                if (max < 1000 && min > -1000 && copy.contains(thousand)) {
                    state = QValidator::Invalid;
                    QSBDEBUG() << __FILE__ << __LINE__<< "state is set to Invalid";
                    goto end;
                }

                const int len = copy.size();
                for (int i=0; i<len- 1; ++i) {
                    if (copy.at(i) == thousand && copy.at(i + 1) == thousand) {
                        QSBDEBUG() << __FILE__ << __LINE__<< "state is set to Invalid";
                        state = QValidator::Invalid;
                        goto end;
                    }
                }

                const int s = copy.size();
                copy.remove(thousand);
                pos = qMax(0, pos - (s - copy.size()));


                num = loc.toDouble(copy, &ok);
                QSBDEBUG() << thousand << num << copy << ok;

                if (!ok) {
                    state = QValidator::Invalid;
                    QSBDEBUG() << __FILE__ << __LINE__<< "state is set to Invalid";
                    goto end;
                }
                notAcceptable = true;
            }
        }

        if (!ok) {
            state = QValidator::Invalid;
            QSBDEBUG() << __FILE__ << __LINE__<< "state is set to Invalid";
        } else if (num >= min && num <= max) {
            state = notAcceptable ? QValidator::Intermediate : QValidator::Acceptable;
            QSBDEBUG() << __FILE__ << __LINE__<< "state is set to "
                       << (state == QValidator::Intermediate ? "Intermediate" : "Acceptable");
        } else if (max == min) { // when max and min is the same the only non-Invalid input is max (or min)
            state = QValidator::Invalid;
            QSBDEBUG() << __FILE__ << __LINE__<< "state is set to Invalid";
        } else {
            if ((num >= 0 && num > max) || (num < 0 && num < min)) {
                state = QValidator::Invalid;
                QSBDEBUG() << __FILE__ << __LINE__<< "state is set to Invalid";
            } else {
                state = isIntermediateValue(copy) ? QValidator::Intermediate : QValidator::Invalid;
                QSBDEBUG() << __FILE__ << __LINE__<< "state is set to "
                           << (state == QValidator::Intermediate ? "Intermediate" : "Acceptable");
            }
        }
    }

end:
    if (state != QValidator::Acceptable) {
        num = max > 0 ? min : max;
    }

    input = prefix + copy + suffix;
    cachedText = input;
    cachedState = state;
    cachedValue = QVariant(num);
    return QVariant(num);
}

/*
    \internal
    \reimp
*/

QString QDoubleSpinBoxPrivate::textFromValue(const QVariant &f) const
{
    Q_Q(const QDoubleSpinBox);
    return q->textFromValue(f.toDouble());
}

/*!
    \fn void QSpinBox::setLineStep(int step)

    Use setSingleStep() instead.
*/

/*!
    \fn void QSpinBox::setMaxValue(int value)

    Use setMaximum() instead.
*/

/*!
    \fn void QSpinBox::setMinValue(int value)

    Use setMinimum() instead.
*/

/*!
    \fn int QSpinBox::maxValue() const

    Use maximum() instead.
*/

/*!
    \fn int QSpinBox::minValue() const

    Use minimum() instead.
*/

/*!
    \internal Returns whether \a str is a string which value cannot be
    parsed but still might turn into something valid.
*/

static bool isIntermediateValueHelper(qint64 num, qint64 min, qint64 max, qint64 *match)
{
    QSBDEBUG("%lld %lld %lld", num, min, max);

    if (num >= min && num <= max) {
        if (match)
            *match = num;
        QSBDEBUG("returns true 0");
        return true;
    }
    qint64 tmp = num;

    int numDigits = 0;
    int digits[10];
    if (tmp == 0) {
        numDigits = 1;
        digits[0] = 0;
    } else {
        tmp = qAbs(num);
        for (int i=0; tmp > 0; ++i) {
            digits[numDigits++] = tmp % 10;
            tmp /= 10;
        }
    }

    int failures = 0;
    qint64 number;
    for (number=max; number>=min; --number) {
        tmp = qAbs(number);
        for (int i=0; tmp > 0;) {
            if (digits[i] == (tmp % 10)) {
                if (++i == numDigits) {
                    if (match)
                        *match = number;
                    QSBDEBUG("returns true 1");
                    return true;
                }
            }
            tmp /= 10;
        }
        if (failures++ == 500000) { //upper bound
            if (match)
                *match = num;
            QSBDEBUG("returns true 2");
            return true;
        }
    }
    QSBDEBUG("returns false");
    return false;
}

/*! \reimp */
bool QSpinBox::event(QEvent *event)
{
    Q_D(QSpinBox);
    if (event->type() == QEvent::StyleChange
#ifdef Q_WS_MAC
            || event->type() == QEvent::MacSizeChange
#endif
            )
        d->setLayoutItemMargins(QStyle::SE_SpinBoxLayoutItem);
    return QAbstractSpinBox::event(event);
}

#endif // QT_NO_SPINBOX