q3datetimeedit.cpp

奇趣公司比较新的qt/emd版本

*/

void Q3TimeEdit::stepUp()
{
    int sec = d->ed->mapSection(d->ed->focusSection());
    bool accepted = true;
    switch(sec) {
    case 0:
        if (!outOfRange(d->h+1, d->m, d->s))
            setHour(d->h+1);
        else
            setHour(d->min.hour());
        break;
    case 1:
        if (!outOfRange(d->h, d->m+1, d->s))
            setMinute(d->m+1);
        else
            setMinute(d->min.minute());
        break;
    case 2:
        if (!outOfRange(d->h, d->m, d->s+1))
            setSecond(d->s+1);
        else
            setSecond(d->min.second());
        break;
    case 3:
        if (d->h < 12)
            setHour(d->h+12);
        else
            setHour(d->h-12);
        break;
    default:
        accepted = false;
        qWarning("Q3TimeEdit::stepUp: Focus section out of range!");
        break;
    }
    if (accepted) {
        d->changed = false;
        emit valueChanged(time());
    }
    d->ed->repaint(d->ed->rect());
}


/*! \reimp

*/

void Q3TimeEdit::stepDown()
{
    int sec = d->ed->mapSection(d->ed->focusSection());

    bool accepted = true;
    switch(sec) {
    case 0:
        if (!outOfRange(d->h-1, d->m, d->s))
            setHour(d->h-1);
        else
            setHour(d->max.hour());
        break;
    case 1:
        if (!outOfRange(d->h, d->m-1, d->s))
            setMinute(d->m-1);
        else
            setMinute(d->max.minute());
        break;
    case 2:
        if (!outOfRange(d->h, d->m, d->s-1))
            setSecond(d->s-1);
        else
            setSecond(d->max.second());
        break;
    case 3:
        if (d->h > 11)
            setHour(d->h-12);
        else
            setHour(d->h+12);
        break;
    default:
        accepted = false;
        qWarning("Q3TimeEdit::stepDown: Focus section out of range!");
        break;
    }
    if (accepted) {
        d->changed = false;
        emit valueChanged(time());
    }
    d->ed->repaint(d->ed->rect());
}


/*!
    Returns the formatted number for section \a sec. This will
    correspond to either the hour, minute or second section, depending
    on \a sec.
*/

QString Q3TimeEdit::sectionFormattedText(int sec)
{
    QString txt;
    txt = sectionText(sec);
    txt = txt.rightJustified(2, QDATETIMEEDIT_HIDDEN_CHAR);
    int offset = sec*2+sec*separator().length() + txt.length();
    if (d->typing && sec == d->ed->focusSection())
        d->ed->setSectionSelection(sec, offset - txt.length(), offset);
    else
        d->ed->setSectionSelection(sec, offset - txt.length(), offset);

    return txt;
}


/*! \reimp

*/

bool Q3TimeEdit::setFocusSection(int sec)
{
    if (sec != d->ed->focusSection()) {
        if (d->timerId)
            killTimer(d->timerId);
        d->timerId = 0;
        d->overwrite = true;
        d->typing = false;
        QString txt = sectionText(sec);
        txt = txt.rightJustified(2, QDATETIMEEDIT_HIDDEN_CHAR);
        int offset = sec*2+sec*separator().length() + txt.length();
        d->ed->setSectionSelection(sec, offset - txt.length(), offset);
        if (d->changed) {
            emit valueChanged(time());
            d->changed = false;
        }
    }
    return d->ed->setFocusSection(sec);
}


/*!
    Sets the hour to \a h, which must be a valid hour, i.e. in the
    range 0..24.
*/

void Q3TimeEdit::setHour(int h)
{
    if (h < 0)
        h = 0;
    if (h > 23)
        h = 23;
    d->h = h;
}


/*!
    Sets the minute to \a m, which must be a valid minute, i.e. in the
    range 0..59.
*/

void Q3TimeEdit::setMinute(int m)
{
    if (m < 0)
        m = 0;
    if (m > 59)
        m = 59;
    d->m = m;
}


/*!
    Sets the second to \a s, which must be a valid second, i.e. in the
    range 0..59.
*/

void Q3TimeEdit::setSecond(int s)
{
    if (s < 0)
        s = 0;
    if (s > 59)
        s = 59;
    d->s = s;
}


/*! \internal

  Returns the text of section \a sec.

*/

QString Q3TimeEdit::sectionText(int sec)
{
    sec = d->ed->mapSection(sec);

    QString txt;
    switch(sec) {
    case 0:
        if (!(d->display & AMPM) || (d->h < 13 && d->h)) {    // I wished the day stared at 0:00 for everybody
            txt = QString::number(d->h);
        } else {
            if (d->h)
                txt = QString::number(d->h - 12);
            else
                txt = QLatin1String("12");
        }
        break;
    case 1:
        txt = QString::number(d->m);
        break;
    case 2:
        txt = QString::number(d->s);
        break;
    case 3:
        if (d->h < 12) {
            if (lAM)
                txt = *lAM;
            else
                txt = QString::fromLatin1("AM");
        } else {
            if (lPM)
                txt = *lPM;
            else
                txt = QString::fromLatin1("PM");
        }
        break;
    default:
        break;
    }
    return txt;
}


/*! \internal
 Returns true if \a h, \a m, and \a s are out of range.
 */

bool Q3TimeEdit::outOfRange(int h, int m, int s) const
{
    if (QTime::isValid(h, m, s)) {
        QTime currentTime(h, m, s);
        if (currentTime > maxValue() ||
             currentTime < minValue())
            return true;
        else
            return false;
    }
    return true;
}

/*! \reimp

*/

void Q3TimeEdit::addNumber(int sec, int num)
{
    if (sec == -1)
        return;
    sec = d->ed->mapSection(sec);
    if (d->timerId)
        killTimer(d->timerId);
    d->timerId = 0;
    bool overwrite = false;
    bool accepted = false;
    d->typing = true;
    QString txt;

    switch(sec) {
    case 0:
        txt = (d->display & AMPM && d->h > 12) ?
            QString::number(d->h - 12) : QString::number(d->h);

        if (d->overwrite || txt.length() == 2) {
            if (d->display & AMPM && num == 0)
                break; // Don't process 0 in 12 hour clock mode
            if (d->display & AMPM && d->h > 11)
                num += 12;
            if (!outOfRange(num, d->m, d->s)) {
                accepted = true;
                d->h = num;
            }
        } else {
            txt += QString::number(num);
            int temp = txt.toInt();

            if (d->display & AMPM) {
                if (temp == 12) {
                    if (d->h < 12) {
                        temp = 0;
                    }
                    accepted = true;
                } else if (outOfRange(temp + 12, d->m, d->s)) {
                    txt = QString::number(d->h);
                } else {
                    if (d->h > 11) {
                        temp += 12;
                    }
                    accepted = true;
                }
            } else if (!(d->display & AMPM) && outOfRange(temp, d->m, d->s)) {
                txt = QString::number(d->h);
            } else {
                accepted = true;
            }

            if (accepted)
                d->h = temp;

            if (d->adv && txt.length() == 2) {
                setFocusSection(d->ed->focusSection()+1);
                overwrite = true;
            }
        }
        break;

    case 1:
        txt = QString::number(d->m);
        if (d->overwrite || txt.length() == 2) {
            if (!outOfRange(d->h, num, d->s)) {
                accepted = true;
                d->m = num;
            }
        } else {
            txt += QString::number(num);
            int temp = txt.toInt();
            if (temp > 59)
                temp = num;
            if (outOfRange(d->h, temp, d->s))
                txt = QString::number(d->m);
            else {
                accepted = true;
                d->m = temp;
            }
            if (d->adv && txt.length() == 2) {
                setFocusSection(d->ed->focusSection()+1);
                overwrite = true;
            }
        }
        break;

    case 2:
        txt = QString::number(d->s);
        if (d->overwrite || txt.length() == 2) {
            if (!outOfRange(d->h, d->m, num)) {
                accepted = true;
                d->s = num;
            }
        } else {
            txt += QString::number(num);
            int temp = txt.toInt();
            if (temp > 59)
                temp = num;
            if (outOfRange(d->h, d->m, temp))
                txt = QString::number(d->s);
            else {
                accepted = true;
                d->s = temp;
            }
            if (d->adv && txt.length() == 2) {
                setFocusSection(d->ed->focusSection()+1);
                overwrite = true;
            }
        }
        break;

    case 3:
        break;

    default:
        break;
    }
    d->changed = !accepted;
    if (accepted)
        emit valueChanged(time());
    d->overwrite = overwrite;
    d->timerId = startTimer(qApp->doubleClickInterval()*4);
    d->ed->repaint(d->ed->rect());
}


/*!
  \internal

  Function which is called whenever the user tries to
  remove the first number from \a sec by pressing the backspace key.
*/

void Q3TimeEdit::removeFirstNumber(int sec)
{
    if (sec == -1)
        return;
    sec = d->ed->mapSection(sec);
    QString txt;
    switch(sec) {
    case 0:
        txt = QString::number(d->h);
        break;
    case 1:
        txt = QString::number(d->m);
        break;
    case 2:
        txt = QString::number(d->s);
        break;
    }
    txt = txt.mid(1, txt.length()) + QLatin1Char('0');
    switch(sec) {
    case 0:
        d->h = txt.toInt();
        break;
    case 1:
        d->m = txt.toInt();
        break;
    case 2:
        d->s = txt.toInt();
        break;
    }
    d->ed->repaint(d->ed->rect());
}

/*! \reimp

*/
void Q3TimeEdit::removeLastNumber(int sec)
{
    if (sec == -1)
        return;
    sec = d->ed->mapSection(sec);
    QString txt;
    switch(sec) {
    case 0:
        txt = QString::number(d->h);
        break;
    case 1:
        txt = QString::number(d->m);
        break;
    case 2:
        txt = QString::number(d->s);
        break;
    }
    txt = txt.mid(0, txt.length()-1);
    switch(sec) {
    case 0:
        d->h = txt.toInt();
        break;
    case 1:
        d->m = txt.toInt();
        break;
    case 2:
        d->s = txt.toInt();
        break;
    }
    d->ed->repaint(d->ed->rect());
}

/*! \reimp
 */
void Q3TimeEdit::resizeEvent(QResizeEvent *)
{
    d->controls->resize(width(), height());
}

/*! \reimp
*/
QSize Q3TimeEdit::sizeHint() const
{
    ensurePolished();
    QFontMetrics fm(font());
    int fw = style()->pixelMetric(QStyle::PM_DefaultFrameWidth, 0, this);
    int h = fm.lineSpacing() + 2;
    int w = 2 + fm.width(QLatin1Char('9')) * 6 + fm.width(d->ed->separator()) * 2 +
        d->controls->upRect().width() + fw * 4;
    if (d->display & AMPM) {
        if (lAM)
            w += fm.width(*lAM) + 4;
        else
            w += fm.width(QString::fromLatin1("AM")) + 4;
    }

    return QSize(w, qMax(h + fw * 2,20)).expandedTo(QApplication::globalStrut());
}

/*! \reimp
*/
QSize Q3TimeEdit::minimumSizeHint() const
{
    return sizeHint();
}

/*!
    \internal
    Enables/disables the push buttons according to the min/max time
    for this widget.
*/

void Q3TimeEdit::updateButtons()
{
    if (!isEnabled())
        return;

    bool upEnabled = time() < maxValue();
    bool downEnabled = time() > minValue();

    d->controls->setUpEnabled(upEnabled);
    d->controls->setDownEnabled(downEnabled);
}


class Q3DateTimeEditPrivate
{
public:
    bool adv;
};

/*!
    \class Q3DateTimeEdit q3datetimeedit.h
    \brief The Q3DateTimeEdit class combines a Q3DateEdit and Q3TimeEdit
    widget into a single widget for editing datetimes.

    \compat

    Q3DateTimeEdit consists of a Q3DateEdit and Q3TimeEdit widget placed
    side by side and offers the functionality of both. The user can
    edit the date and time by using the keyboard or