qabstractspinbox.cpp

Go to the documentation of this file.

/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include <qplatformdefs.h>
#include <private/qabstractspinbox_p.h>
#include <private/qdatetime_p.h>
#include <private/qlineedit_p.h>
#include <qabstractspinbox.h>

#ifndef QT_NO_SPINBOX

#include <qapplication.h>
#include <qclipboard.h>
#include <qdatetime.h>
#include <qdatetimeedit.h>
#include <qevent.h>
#include <qmenu.h>
#include <qpainter.h>
#include <qpalette.h>
#include <qstylepainter.h>
#include <qdebug.h>
#ifndef QT_NO_ACCESSIBILITY
# include <qaccessible.h>
#endif

#if defined(Q_WS_X11)
#include <limits.h>
#endif

#if defined(Q_OS_SYMBIAN)
#include <w32std.h>
#include <private/qt_s60_p.h>
#endif

//#define QABSTRACTSPINBOX_QSBDEBUG
#ifdef QABSTRACTSPINBOX_QSBDEBUG
#  define QASBDEBUG qDebug
#else
#  define QASBDEBUG if (false) qDebug
#endif

QT_BEGIN_NAMESPACE

QAbstractSpinBox::QAbstractSpinBox(QWidget *parent)
    : QWidget(*new QAbstractSpinBoxPrivate, parent, 0)
{
    Q_D(QAbstractSpinBox);
    d->init();
}

QAbstractSpinBox::QAbstractSpinBox(QAbstractSpinBoxPrivate &dd, QWidget *parent)
    : QWidget(dd, parent, 0)
{
    Q_D(QAbstractSpinBox);
    d->init();
}

QAbstractSpinBox::~QAbstractSpinBox()
{
}

QAbstractSpinBox::ButtonSymbols QAbstractSpinBox::buttonSymbols() const
{
    Q_D(const QAbstractSpinBox);
    return d->buttonSymbols;
}

void QAbstractSpinBox::setButtonSymbols(ButtonSymbols buttonSymbols)
{
    Q_D(QAbstractSpinBox);
    if (d->buttonSymbols != buttonSymbols) {
        d->buttonSymbols = buttonSymbols;
        d->updateEditFieldGeometry();
        update();
    }
}

QString QAbstractSpinBox::text() const
{
    return lineEdit()->displayText();
}


QString QAbstractSpinBox::specialValueText() const
{
    Q_D(const QAbstractSpinBox);
    return d->specialValueText;
}

void QAbstractSpinBox::setSpecialValueText(const QString &specialValueText)
{
    Q_D(QAbstractSpinBox);

    d->specialValueText = specialValueText;
    d->cachedSizeHint = QSize(); // minimumSizeHint doesn't care about specialValueText
    d->clearCache();
    d->updateEdit();
}

bool QAbstractSpinBox::wrapping() const
{
    Q_D(const QAbstractSpinBox);
    return d->wrapping;
}

void QAbstractSpinBox::setWrapping(bool wrapping)
{
    Q_D(QAbstractSpinBox);
    d->wrapping = wrapping;
}


bool QAbstractSpinBox::isReadOnly() const
{
    Q_D(const QAbstractSpinBox);
    return d->readOnly;
}

void QAbstractSpinBox::setReadOnly(bool enable)
{
    Q_D(QAbstractSpinBox);
    d->readOnly = enable;
    d->edit->setReadOnly(enable);
    update();
}

bool QAbstractSpinBox::keyboardTracking() const
{
    Q_D(const QAbstractSpinBox);
    return d->keyboardTracking;
}

void QAbstractSpinBox::setKeyboardTracking(bool enable)
{
    Q_D(QAbstractSpinBox);
    d->keyboardTracking = enable;
}

bool QAbstractSpinBox::hasFrame() const
{
    Q_D(const QAbstractSpinBox);
    return d->frame;
}


void QAbstractSpinBox::setFrame(bool enable)
{
    Q_D(QAbstractSpinBox);
    d->frame = enable;
    update();
    d->updateEditFieldGeometry();
}

void QAbstractSpinBox::setAccelerated(bool accelerate)
{
    Q_D(QAbstractSpinBox);
    d->accelerate = accelerate;

}
bool QAbstractSpinBox::isAccelerated() const
{
    Q_D(const QAbstractSpinBox);
    return d->accelerate;
}

void QAbstractSpinBox::setCorrectionMode(CorrectionMode correctionMode)
{
    Q_D(QAbstractSpinBox);
    d->correctionMode = correctionMode;

}
QAbstractSpinBox::CorrectionMode QAbstractSpinBox::correctionMode() const
{
    Q_D(const QAbstractSpinBox);
    return d->correctionMode;
}


bool QAbstractSpinBox::hasAcceptableInput() const
{
    Q_D(const QAbstractSpinBox);
    return d->edit->hasAcceptableInput();
}

Qt::Alignment QAbstractSpinBox::alignment() const
{
    Q_D(const QAbstractSpinBox);

    return (Qt::Alignment)d->edit->alignment();
}

void QAbstractSpinBox::setAlignment(Qt::Alignment flag)
{
    Q_D(QAbstractSpinBox);

    d->edit->setAlignment(flag);
}

void QAbstractSpinBox::selectAll()
{
    Q_D(QAbstractSpinBox);


    if (!d->specialValue()) {
        const int tmp = d->edit->displayText().size() - d->suffix.size();
        d->edit->setSelection(tmp, -(tmp - d->prefix.size()));
    } else {
        d->edit->selectAll();
    }
}

void QAbstractSpinBox::clear()
{
    Q_D(QAbstractSpinBox);

    d->edit->setText(d->prefix + d->suffix);
    d->edit->setCursorPosition(d->prefix.size());
    d->cleared = true;
}

QAbstractSpinBox::StepEnabled QAbstractSpinBox::stepEnabled() const
{
    Q_D(const QAbstractSpinBox);
    if (d->readOnly || d->type == QVariant::Invalid)
        return StepNone;
    if (d->wrapping)
        return StepEnabled(StepUpEnabled | StepDownEnabled);
    StepEnabled ret = StepNone;
    if (d->variantCompare(d->value, d->maximum) < 0) {
        ret |= StepUpEnabled;
    }
    if (d->variantCompare(d->value, d->minimum) > 0) {
        ret |= StepDownEnabled;
    }
    return ret;
}

QValidator::State QAbstractSpinBox::validate(QString & /* input */, int & /* pos */) const
{
    return QValidator::Acceptable;
}

void QAbstractSpinBox::fixup(QString & /* input */) const
{
}

void QAbstractSpinBox::stepUp()
{
    stepBy(1);
}

void QAbstractSpinBox::stepDown()
{
    stepBy(-1);
}
void QAbstractSpinBox::stepBy(int steps)
{
    Q_D(QAbstractSpinBox);

    const QVariant old = d->value;
    QString tmp = d->edit->displayText();
    int cursorPos = d->edit->cursorPosition();
    bool dontstep = false;
    EmitPolicy e = EmitIfChanged;
    if (d->pendingEmit) {
        dontstep = validate(tmp, cursorPos) != QValidator::Acceptable;
        d->cleared = false;
        d->interpret(NeverEmit);
        if (d->value != old)
            e = AlwaysEmit;
    }
    if (!dontstep) {
        d->setValue(d->bound(d->value + (d->singleStep * steps), old, steps), e);
    } else if (e == AlwaysEmit) {
        d->emitSignals(e, old);
    }
    selectAll();
}

QLineEdit *QAbstractSpinBox::lineEdit() const
{
    Q_D(const QAbstractSpinBox);

    return d->edit;
}


void QAbstractSpinBox::setLineEdit(QLineEdit *lineEdit)
{
    Q_D(QAbstractSpinBox);

    if (!lineEdit) {
        Q_ASSERT(lineEdit);
        return;
    }
    delete d->edit;
    d->edit = lineEdit;
    if (!d->edit->validator())
        d->edit->setValidator(d->validator);

    if (d->edit->parent() != this)
        d->edit->setParent(this);

    d->edit->setFrame(false);
    d->edit->setFocusProxy(this);
    d->edit->setAcceptDrops(false);

    if (d->type != QVariant::Invalid) {
        connect(d->edit, SIGNAL(textChanged(QString)),
                this, SLOT(_q_editorTextChanged(QString)));
        connect(d->edit, SIGNAL(cursorPositionChanged(int,int)),
                this, SLOT(_q_editorCursorPositionChanged(int,int)));
    }
    d->updateEditFieldGeometry();
    d->edit->setContextMenuPolicy(Qt::NoContextMenu);

    if (isVisible())
        d->edit->show();
    if (isVisible())
        d->updateEdit();
}


void QAbstractSpinBox::interpretText()
{
    Q_D(QAbstractSpinBox);
    d->interpret(EmitIfChanged);
}

/*
    Reimplemented in 4.6, so be careful.
 */
QVariant QAbstractSpinBox::inputMethodQuery(Qt::InputMethodQuery query) const
{
    Q_D(const QAbstractSpinBox);
    return d->edit->inputMethodQuery(query);
}

bool QAbstractSpinBox::event(QEvent *event)
{
    Q_D(QAbstractSpinBox);
    switch (event->type()) {
    case QEvent::FontChange:
    case QEvent::StyleChange:
        d->cachedSizeHint = d->cachedMinimumSizeHint = QSize();
        break;
    case QEvent::ApplicationLayoutDirectionChange:
    case QEvent::LayoutDirectionChange:
        d->updateEditFieldGeometry();
        break;
    case QEvent::HoverEnter:
    case QEvent::HoverLeave:
    case QEvent::HoverMove:
        if (const QHoverEvent *he = static_cast<const QHoverEvent *>(event))
            d->updateHoverControl(he->pos());
        break;
    case QEvent::ShortcutOverride:
        if (d->edit->event(event))
            return true;
        break;
#ifdef QT_KEYPAD_NAVIGATION
    case QEvent::EnterEditFocus:
    case QEvent::LeaveEditFocus:
        if (QApplication::keypadNavigationEnabled()) {
            const bool b = d->edit->event(event);
            d->edit->setSelection(d->edit->displayText().size() - d->suffix.size(),0);
            if (event->type() == QEvent::LeaveEditFocus)
                emit editingFinished();
            if (b)
                return true;
        }
        break;
#endif
    case QEvent::InputMethod:
        return d->edit->event(event);
    default:
        break;
    }
    return QWidget::event(event);
}

void QAbstractSpinBox::showEvent(QShowEvent *)
{
    Q_D(QAbstractSpinBox);
    d->reset();

    if (d->ignoreUpdateEdit) {
        d->ignoreUpdateEdit = false;
    } else {
        d->updateEdit();
    }
}

void QAbstractSpinBox::changeEvent(QEvent *event)
{
    Q_D(QAbstractSpinBox);

    switch (event->type()) {
        case QEvent::StyleChange:
            d->spinClickTimerInterval = style()->styleHint(QStyle::SH_SpinBox_ClickAutoRepeatRate, 0, this);
            d->spinClickThresholdTimerInterval =
                style()->styleHint(QStyle::SH_SpinBox_ClickAutoRepeatThreshold, 0, this);
            d->reset();
            d->updateEditFieldGeometry();
            break;
        case QEvent::EnabledChange:
            if (!isEnabled()) {
                d->reset();
            }
            break;
        case QEvent::ActivationChange:
            if (!isActiveWindow()){
                d->reset();
                if (d->pendingEmit) // pendingEmit can be true even if it hasn't changed.
                    d->interpret(EmitIfChanged); // E.g. 10 to 10.0
            }
            break;
        default:
            break;
    }
    QWidget::changeEvent(event);
}

void QAbstractSpinBox::resizeEvent(QResizeEvent *event)
{
    Q_D(QAbstractSpinBox);
    QWidget::resizeEvent(event);

    d->updateEditFieldGeometry();
    update();
}

QSize QAbstractSpinBox::sizeHint() const
{
    Q_D(const QAbstractSpinBox);
    if (d->cachedSizeHint.isEmpty()) {
        ensurePolished();

        const QFontMetrics fm(fontMetrics());
        int h = d->edit->sizeHint().height();
        int w = 0;
        QString s;
        s = d->prefix + d->textFromValue(d->minimum) + d->suffix + QLatin1Char(' ');
        s.truncate(18);
        w = qMax(w, fm.width(s));
        s = d->prefix + d->textFromValue(d->maximum) + d->suffix + QLatin1Char(' ');
        s.truncate(18);
        w = qMax(w, fm.width(s));
        if (d->specialValueText.size()) {
            s = d->specialValueText;
            w = qMax(w, fm.width(s));
        }
        w += 2; // cursor blinking space

        QStyleOptionSpinBox opt;
        initStyleOption(&opt);
        QSize hint(w, h);
        QSize extra(35, 6);
        opt.rect.setSize(hint + extra);
        extra += hint - style()->subControlRect(QStyle::CC_SpinBox, &opt,
                                                QStyle::SC_SpinBoxEditField, this).size();
        // get closer to final result by repeating the calculation
        opt.rect.setSize(hint + extra);
        extra += hint - style()->subControlRect(QStyle::CC_SpinBox, &opt,
                                                QStyle::SC_SpinBoxEditField, this).size();
        hint += extra;

        opt.rect = rect();
        d->cachedSizeHint = style()->sizeFromContents(QStyle::CT_SpinBox, &opt, hint, this)
                            .expandedTo(QApplication::globalStrut());
    }
    return d->cachedSizeHint;
}

QSize QAbstractSpinBox::minimumSizeHint() const
{
    Q_D(const QAbstractSpinBox);
    if (d->cachedMinimumSizeHint.isEmpty()) {
        ensurePolished();

        const QFontMetrics fm(fontMetrics());
        int h = d->edit->minimumSizeHint().height();
        int w = fm.width(QLatin1String("1000"));
        w += 2; // cursor blinking space

        QStyleOptionSpinBox opt;
        initStyleOption(&opt);
        QSize hint(w, h);
        QSize extra(35, 6);
        opt.rect.setSize(hint + extra);
        extra += hint - style()->subControlRect(QStyle::CC_SpinBox, &opt,
                                                QStyle::SC_SpinBoxEditField, this).size();
        // get closer to final result by repeating the calculation
        opt.rect.setSize(hint + extra);
        extra += hint - style()->subControlRect(QStyle::CC_SpinBox, &opt,
                                                QStyle::SC_SpinBoxEditField, this).size();
        hint += extra;

        opt.rect = rect();

        d->cachedMinimumSizeHint = style()->sizeFromContents(QStyle::CT_SpinBox, &opt, hint, this)
                                   .expandedTo(QApplication::globalStrut());
    }
    return d->cachedMinimumSizeHint;
}

void QAbstractSpinBox::paintEvent(QPaintEvent *)
{
    QStyleOptionSpinBox opt;
    initStyleOption(&opt);
    QStylePainter p(this);
    p.drawComplexControl(QStyle::CC_SpinBox, opt);
}

void QAbstractSpinBox::keyPressEvent(QKeyEvent *event)
{
    Q_D(QAbstractSpinBox);

    if (!event->text().isEmpty() && d->edit->cursorPosition() < d->prefix.size())
        d->edit->setCursorPosition(d->prefix.size());

    int steps = 1;
    bool isPgUpOrDown = false;
    switch (event->key()) {
    case Qt::Key_PageUp:
    case Qt::Key_PageDown:
        steps *= 10;
        isPgUpOrDown = true;
    case Qt::Key_Up:
    case Qt::Key_Down: {
#ifdef QT_KEYPAD_NAVIGATION
        if (QApplication::keypadNavigationEnabled()) {
            // Reserve up/down for nav - use left/right for edit.
            if (!hasEditFocus() && (event->key() == Qt::Key_Up
                                    || event->key() == Qt::Key_Down)) {
                event->ignore();
                return;
            }
        }
#endif
        event->accept();
        const bool up = (event->key() == Qt::Key_PageUp || event->key() == Qt::Key_Up);
        if (!(stepEnabled() & (up ? StepUpEnabled : StepDownEnabled)))
            return;
        if (!up)
            steps *= -1;
        if (style()->styleHint(QStyle::SH_SpinBox_AnimateButton, 0, this)) {
            d->buttonState = (Keyboard | (up ? Up : Down));
        }
        if (d->spinClickTimerId == -1)
            stepBy(steps);
        if(event->isAutoRepeat() && !isPgUpOrDown) {
            if(d->spinClickThresholdTimerId == -1 && d->spinClickTimerId == -1) {
                d->updateState(up, true);
            }
        }
#ifndef QT_NO_ACCESSIBILITY
        QAccessible::updateAccessibility(this, 0, QAccessible::ValueChanged);
#endif
        return;
    }
#ifdef QT_KEYPAD_NAVIGATION
    case Qt::Key_Left:
    case Qt::Key_Right:
        if (QApplication::keypadNavigationEnabled() && !hasEditFocus()) {
            event->ignore();
            return;
        }
        break;
    case Qt::Key_Back:
        if (QApplication::keypadNavigationEnabled() && !hasEditFocus()) {
            event->ignore();
            return;
        }
        break;
#endif
    case Qt::Key_Enter:
    case Qt::Key_Return:
        d->edit->d_func()->control->clearUndo();
        d->interpret(d->keyboardTracking ? AlwaysEmit : EmitIfChanged);
        selectAll();
        event->ignore();
        emit editingFinished();
        return;

#ifdef QT_KEYPAD_NAVIGATION
    case Qt::Key_Select:
        if (QApplication::keypadNavigationEnabled()) {
            // Toggles between left/right moving cursor and inc/dec.
            setEditFocus(!hasEditFocus());
        }
        return;
#endif

#ifdef Q_WS_X11 // only X11
    case Qt::Key_U:
        if (event->modifiers() & Qt::ControlModifier) {
            event->accept();
            if (!isReadOnly())
                clear();
            return;
        }
        break;
#endif

    case Qt::Key_End:
    case Qt::Key_Home:
        if (event->modifiers() & Qt::ShiftModifier) {
            int currentPos = d->edit->cursorPosition();
            const QString text = d->edit->displayText();
            if (event->key() == Qt::Key_End) {
                if ((currentPos == 0 && !d->prefix.isEmpty()) || text.size() - d->suffix.size() <= currentPos) {
                    break; // let lineedit handle this
                } else {
                    d->edit->setSelection(currentPos, text.size() - d->suffix.size() - currentPos);
                }
            } else {
                if ((currentPos == text.size() && !d->suffix.isEmpty()) || currentPos <= d->prefix.size()) {
                    break; // let lineedit handle this
                } else {
                    d->edit->setSelection(currentPos, d->prefix.size() - currentPos);
                }
            }
            event->accept();
            return;
        }
        break;

    default:
#ifndef QT_NO_SHORTCUT
        if (event == QKeySequence::SelectAll) {
            selectAll();
            event->accept();
            return;
        }
#endif
        break;
    }

    d->edit->event(event);
    if (!isVisible())
        d->ignoreUpdateEdit = true;
}

void QAbstractSpinBox::keyReleaseEvent(QKeyEvent *event)
{
    Q_D(QAbstractSpinBox);

    if (d->buttonState & Keyboard && !event->isAutoRepeat())  {
        d->reset();
    } else {
        d->edit->event(event);
    }
}

#ifndef QT_NO_WHEELEVENT
void QAbstractSpinBox::wheelEvent(QWheelEvent *event)
{
    const int steps = (event->delta() > 0 ? 1 : -1);
    if (stepEnabled() & (steps > 0 ? StepUpEnabled : StepDownEnabled))
        stepBy(event->modifiers() & Qt::ControlModifier ? steps * 10 : steps);
    event->accept();
}
#endif


void QAbstractSpinBox::focusInEvent(QFocusEvent *event)
{
    Q_D(QAbstractSpinBox);

    d->edit->event(event);
    if (event->reason() == Qt::TabFocusReason || event->reason() == Qt::BacktabFocusReason) {
        selectAll();
    }
    QWidget::focusInEvent(event);
}

void QAbstractSpinBox::focusOutEvent(QFocusEvent *event)
{
    Q_D(QAbstractSpinBox);

    if (d->pendingEmit)
        d->interpret(EmitIfChanged);

    d->reset();
    d->edit->event(event);
    d->updateEdit();
    QWidget::focusOutEvent(event);

#ifdef QT_KEYPAD_NAVIGATION
    // editingFinished() is already emitted on LeaveEditFocus
    if (!QApplication::keypadNavigationEnabled())
#endif
    emit editingFinished();
}

void QAbstractSpinBox::closeEvent(QCloseEvent *event)
{
    Q_D(QAbstractSpinBox);

    d->reset();
    if (d->pendingEmit)
        d->interpret(EmitIfChanged);
    QWidget::closeEvent(event);
}

void QAbstractSpinBox::hideEvent(QHideEvent *event)
{
    Q_D(QAbstractSpinBox);
    d->reset();
    if (d->pendingEmit)
        d->interpret(EmitIfChanged);
    QWidget::hideEvent(event);
}


static int getKeyboardAutoRepeatRate() {
    int ret = 30;
#if defined(Q_OS_SYMBIAN)
    TTimeIntervalMicroSeconds32 initialTime;
    TTimeIntervalMicroSeconds32 time;
    S60->wsSession().GetKeyboardRepeatRate(initialTime, time);
    ret = time.Int() / 1000; // msecs
#elif defined(Q_OS_WIN) && !defined(Q_OS_WINCE)
    DWORD time;
    if (SystemParametersInfo(SPI_GETKEYBOARDSPEED, 0, &time, 0) != FALSE)
        ret = static_cast<int>(1000 / static_cast<int>(time)); // msecs
#endif
    return ret; // msecs
}

void QAbstractSpinBox::timerEvent(QTimerEvent *event)
{
    Q_D(QAbstractSpinBox);

    bool doStep = false;
    if (event->timerId() == d->spinClickThresholdTimerId) {
        killTimer(d->spinClickThresholdTimerId);
        d->spinClickThresholdTimerId = -1;
        d->effectiveSpinRepeatRate = d->buttonState & Keyboard
                                     ? getKeyboardAutoRepeatRate()
                                     : d->spinClickTimerInterval;
        d->spinClickTimerId = startTimer(d->effectiveSpinRepeatRate);
        doStep = true;
    } else if (event->timerId() == d->spinClickTimerId) {
        if (d->accelerate) {
            d->acceleration = d->acceleration + (int)(d->effectiveSpinRepeatRate * 0.05);
            if (d->effectiveSpinRepeatRate - d->acceleration >= 10) {
                killTimer(d->spinClickTimerId);
                d->spinClickTimerId = startTimer(d->effectiveSpinRepeatRate - d->acceleration);
            }
        }
        doStep = true;
    }

    if (doStep) {
        const StepEnabled st = stepEnabled();
        if (d->buttonState & Up) {
            if (!(st & StepUpEnabled)) {
                d->reset();
            } else {
                stepBy(1);
            }
        } else if (d->buttonState & Down) {
            if (!(st & StepDownEnabled)) {
                d->reset();
            } else {
                stepBy(-1);
            }
        }
        return;
    }
    QWidget::timerEvent(event);
    return;
}

void QAbstractSpinBox::contextMenuEvent(QContextMenuEvent *event)
{
#ifdef QT_NO_CONTEXTMENU
    Q_UNUSED(event);
#else
    Q_D(QAbstractSpinBox);

    QPointer<QMenu> menu = d->edit->createStandardContextMenu();
    if (!menu)
        return;

    d->reset();

    QAction *selAll = new QAction(tr("&Select All"), menu);
    menu->insertAction(d->edit->d_func()->selectAllAction,
                      selAll);
    menu->removeAction(d->edit->d_func()->selectAllAction);
    menu->addSeparator();
    const uint se = stepEnabled();
    QAction *up = menu->addAction(tr("&Step up"));
    up->setEnabled(se & StepUpEnabled);
    QAction *down = menu->addAction(tr("Step &down"));
    down->setEnabled(se & StepDownEnabled);
    menu->addSeparator();

    const QPointer<QAbstractSpinBox> that = this;
    const QPoint pos = (event->reason() == QContextMenuEvent::Mouse)
        ? event->globalPos() : mapToGlobal(QPoint(event->pos().x(), 0)) + QPoint(width() / 2, height() / 2);
    const QAction *action = menu->exec(pos);
    delete static_cast<QMenu *>(menu);
    if (that && action) {
        if (action == up) {
            stepBy(1);
        } else if (action == down) {
            stepBy(-1);
        } else if (action == selAll) {
            selectAll();
        }
    }
    event->accept();
#endif // QT_NO_CONTEXTMENU
}

void QAbstractSpinBox::mouseMoveEvent(QMouseEvent *event)
{
    Q_D(QAbstractSpinBox);

    d->updateHoverControl(event->pos());

    // If we have a timer ID, update the state
    if (d->spinClickTimerId != -1 && d->buttonSymbols != NoButtons) {
        const StepEnabled se = stepEnabled();
        if ((se & StepUpEnabled) && d->hoverControl == QStyle::SC_SpinBoxUp)
            d->updateState(true);
        else if ((se & StepDownEnabled) && d->hoverControl == QStyle::SC_SpinBoxDown)
            d->updateState(false);
        else
            d->reset();
        event->accept();
    }
}

void QAbstractSpinBox::mousePressEvent(QMouseEvent *event)
{
    Q_D(QAbstractSpinBox);

    if (event->button() != Qt::LeftButton || d->buttonState != None) {
        return;
    }

    d->updateHoverControl(event->pos());
    event->accept();

    const StepEnabled se = (d->buttonSymbols == NoButtons) ? StepEnabled(StepNone) : stepEnabled();
    if ((se & StepUpEnabled) && d->hoverControl == QStyle::SC_SpinBoxUp) {
        d->updateState(true);
    } else if ((se & StepDownEnabled) && d->hoverControl == QStyle::SC_SpinBoxDown) {
        d->updateState(false);
    } else {
        event->ignore();
    }
}

void QAbstractSpinBox::mouseReleaseEvent(QMouseEvent *event)
{
    Q_D(QAbstractSpinBox);

    if ((d->buttonState & Mouse) != 0)
        d->reset();
    event->accept();
}

// --- QAbstractSpinBoxPrivate ---

QAbstractSpinBoxPrivate::QAbstractSpinBoxPrivate()
    : edit(0), type(QVariant::Invalid), spinClickTimerId(-1),
      spinClickTimerInterval(100), spinClickThresholdTimerId(-1), spinClickThresholdTimerInterval(-1),
      effectiveSpinRepeatRate(1), buttonState(None), cachedText(QLatin1String("\x01")),
      cachedState(QValidator::Invalid), pendingEmit(false), readOnly(false), wrapping(false),
      ignoreCursorPositionChanged(false), frame(true), accelerate(false), keyboardTracking(true),
      cleared(false), ignoreUpdateEdit(false), correctionMode(QAbstractSpinBox::CorrectToPreviousValue),
      acceleration(0), hoverControl(QStyle::SC_None), buttonSymbols(QAbstractSpinBox::UpDownArrows), validator(0)
{
}

/*
   \internal
   Called when the QAbstractSpinBoxPrivate is destroyed
*/
QAbstractSpinBoxPrivate::~QAbstractSpinBoxPrivate()
{
}

bool QAbstractSpinBoxPrivate::updateHoverControl(const QPoint &pos)
{
    Q_Q(QAbstractSpinBox);
    QRect lastHoverRect = hoverRect;
    QStyle::SubControl lastHoverControl = hoverControl;
    bool doesHover = q->testAttribute(Qt::WA_Hover);
    if (lastHoverControl != newHoverControl(pos) && doesHover) {
        q->update(lastHoverRect);
        q->update(hoverRect);
        return true;
    }
    return !doesHover;
}

QStyle::SubControl QAbstractSpinBoxPrivate::newHoverControl(const QPoint &pos)
{
    Q_Q(QAbstractSpinBox);

    QStyleOptionSpinBox opt;
    q->initStyleOption(&opt);
    opt.subControls = QStyle::SC_All;
    hoverControl = q->style()->hitTestComplexControl(QStyle::CC_SpinBox, &opt, pos, q);
    hoverRect = q->style()->subControlRect(QStyle::CC_SpinBox, &opt, hoverControl, q);
    return hoverControl;
}

QString QAbstractSpinBoxPrivate::stripped(const QString &t, int *pos) const
{
    QString text = t;
    if (specialValueText.size() == 0 || text != specialValueText) {
        int from = 0;
        int size = text.size();
        bool changed = false;
        if (prefix.size() && text.startsWith(prefix)) {
            from += prefix.size();
            size -= from;
            changed = true;
        }
        if (suffix.size() && text.endsWith(suffix)) {
            size -= suffix.size();
            changed = true;
        }
        if (changed)
            text = text.mid(from, size);
    }

    const int s = text.size();
    text = text.trimmed();
    if (pos)
        (*pos) -= (s - text.size());
    return text;

}

void QAbstractSpinBoxPrivate::updateEditFieldGeometry()
{
    Q_Q(QAbstractSpinBox);
    QStyleOptionSpinBox opt;
    q->initStyleOption(&opt);
    opt.subControls = QStyle::SC_SpinBoxEditField;
    edit->setGeometry(q->style()->subControlRect(QStyle::CC_SpinBox, &opt,
                                                 QStyle::SC_SpinBoxEditField, q));
}
bool QAbstractSpinBoxPrivate::specialValue() const
{
    return (value == minimum && !specialValueText.isEmpty());
}

void QAbstractSpinBoxPrivate::emitSignals(EmitPolicy, const QVariant &)
{
}

void QAbstractSpinBoxPrivate::_q_editorTextChanged(const QString &t)
{
    Q_Q(QAbstractSpinBox);

    if (keyboardTracking) {
        QString tmp = t;
        int pos = edit->cursorPosition();
        QValidator::State state = q->validate(tmp, pos);
        if (state == QValidator::Acceptable) {
            const QVariant v = valueFromText(tmp);
            setValue(v, EmitIfChanged, tmp != t);
            pendingEmit = false;
        } else {
            pendingEmit = true;
        }
    } else {
        pendingEmit = true;
    }
}

void QAbstractSpinBoxPrivate::_q_editorCursorPositionChanged(int oldpos, int newpos)
{
    if (!edit->hasSelectedText() && !ignoreCursorPositionChanged && !specialValue()) {
        ignoreCursorPositionChanged = true;

        bool allowSelection = true;
        int pos = -1;
        if (newpos < prefix.size() && newpos != 0) {
            if (oldpos == 0) {
                allowSelection = false;
                pos = prefix.size();
            } else {
                pos = oldpos;
            }
        } else if (newpos > edit->text().size() - suffix.size()
                   && newpos != edit->text().size()) {
            if (oldpos == edit->text().size()) {
                pos = edit->text().size() - suffix.size();
                allowSelection = false;
            } else {
                pos = edit->text().size();
            }
        }
        if (pos != -1) {
            const int selSize = edit->selectionStart() >= 0 && allowSelection
                                  ? (edit->selectedText().size()
                                     * (newpos < pos ? -1 : 1)) - newpos + pos
                                  : 0;

            const bool wasBlocked = edit->blockSignals(true);
            if (selSize != 0) {
                edit->setSelection(pos - selSize, selSize);
            } else {
                edit->setCursorPosition(pos);
            }
            edit->blockSignals(wasBlocked);
        }
        ignoreCursorPositionChanged = false;
    }
}

void QAbstractSpinBoxPrivate::init()
{
    Q_Q(QAbstractSpinBox);

    q->setLineEdit(new QLineEdit(q));
    edit->setObjectName(QLatin1String("qt_spinbox_lineedit"));
    validator = new QSpinBoxValidator(q, this);
    edit->setValidator(validator);

    QStyleOptionSpinBox opt;
    q->initStyleOption(&opt);
    spinClickTimerInterval = q->style()->styleHint(QStyle::SH_SpinBox_ClickAutoRepeatRate, &opt, q);
    spinClickThresholdTimerInterval = q->style()->styleHint(QStyle::SH_SpinBox_ClickAutoRepeatThreshold, &opt, q);
    q->setFocusPolicy(Qt::WheelFocus);
    q->setSizePolicy(QSizePolicy(QSizePolicy::Minimum, QSizePolicy::Fixed, QSizePolicy::SpinBox));
    q->setAttribute(Qt::WA_InputMethodEnabled);

    q->setAttribute(Qt::WA_MacShowFocusRect);
}

void QAbstractSpinBoxPrivate::reset()
{
    Q_Q(QAbstractSpinBox);

    buttonState = None;
    if (q) {
        if (spinClickTimerId != -1)
            q->killTimer(spinClickTimerId);
        if (spinClickThresholdTimerId != -1)
            q->killTimer(spinClickThresholdTimerId);
        spinClickTimerId = spinClickThresholdTimerId = -1;
        acceleration = 0;
        q->update();
    }
}

void QAbstractSpinBoxPrivate::updateState(bool up, bool fromKeyboard /* = false */)
{
    Q_Q(QAbstractSpinBox);
    if ((up && (buttonState & Up)) || (!up && (buttonState & Down)))
        return;
    reset();
    if (q && (q->stepEnabled() & (up ? QAbstractSpinBox::StepUpEnabled
                                  : QAbstractSpinBox::StepDownEnabled))) {
        spinClickThresholdTimerId = q->startTimer(spinClickThresholdTimerInterval);
        buttonState = (up ? Up : Down) | (fromKeyboard ? Keyboard : Mouse);
        q->stepBy(up ? 1 : -1);
#ifndef QT_NO_ACCESSIBILITY
        QAccessible::updateAccessibility(q, 0, QAccessible::ValueChanged);
#endif
    }
}


void QAbstractSpinBox::initStyleOption(QStyleOptionSpinBox *option) const
{
    if (!option)
        return;

    Q_D(const QAbstractSpinBox);
    option->initFrom(this);
    option->activeSubControls = QStyle::SC_None;
    option->buttonSymbols = d->buttonSymbols;
    option->subControls = QStyle::SC_SpinBoxFrame | QStyle::SC_SpinBoxEditField;
    if (d->buttonSymbols != QAbstractSpinBox::NoButtons) {
        option->subControls |= QStyle::SC_SpinBoxUp | QStyle::SC_SpinBoxDown;
        if (d->buttonState & Up) {
            option->activeSubControls = QStyle::SC_SpinBoxUp;
        } else if (d->buttonState & Down) {
            option->activeSubControls = QStyle::SC_SpinBoxDown;
        }
    }

    if (d->buttonState) {
        option->state |= QStyle::State_Sunken;
    } else {
        option->activeSubControls = d->hoverControl;
    }

    option->stepEnabled = style()->styleHint(QStyle::SH_SpinControls_DisableOnBounds)
                      ? stepEnabled()
                      : (QAbstractSpinBox::StepDownEnabled|QAbstractSpinBox::StepUpEnabled);

    option->frame = d->frame;
    if (d->readOnly)
        option->state |= QStyle::State_ReadOnly;
}

QVariant QAbstractSpinBoxPrivate::bound(const QVariant &val, const QVariant &old, int steps) const
{
    QVariant v = val;
    if (!wrapping || steps == 0 || old.isNull()) {
        if (variantCompare(v, minimum) < 0) {
            v = wrapping ? maximum : minimum;
        }
        if (variantCompare(v, maximum) > 0) {
            v = wrapping ? minimum : maximum;
        }
    } else {
        const bool wasMin = old == minimum;
        const bool wasMax = old == maximum;
        const int oldcmp = variantCompare(v, old);
        const int maxcmp = variantCompare(v, maximum);
        const int mincmp = variantCompare(v, minimum);
        const bool wrapped = (oldcmp > 0 && steps < 0) || (oldcmp < 0 && steps > 0);
        if (maxcmp > 0) {
            v = ((wasMax && !wrapped && steps > 0) || (steps < 0 && !wasMin && wrapped))
                ? minimum : maximum;
        } else if (wrapped && (maxcmp > 0 || mincmp < 0)) {
            v = ((wasMax && steps > 0) || (!wasMin && steps < 0)) ? minimum : maximum;
        } else if (mincmp < 0) {
            v = (!wasMax && !wasMin ? minimum : maximum);
        }
    }

    return v;
}

void QAbstractSpinBoxPrivate::setValue(const QVariant &val, EmitPolicy ep,
                                       bool doUpdate)
{
    Q_Q(QAbstractSpinBox);
    const QVariant old = value;
    value = bound(val);
    pendingEmit = false;
    cleared = false;
    if (doUpdate) {
        updateEdit();
    }
    q->update();

    if (ep == AlwaysEmit || (ep == EmitIfChanged && old != value)) {
        emitSignals(ep, old);
    }
}

void QAbstractSpinBoxPrivate::updateEdit()
{
    Q_Q(QAbstractSpinBox);
    if (type == QVariant::Invalid)
        return;
    const QString newText = specialValue() ? specialValueText : prefix + textFromValue(value) + suffix;
    if (newText == edit->displayText() || cleared)
        return;

    const bool empty = edit->text().isEmpty();
    int cursor = edit->cursorPosition();
    int selsize = edit->selectedText().size();
    const bool sb = edit->blockSignals(true);
    edit->setText(newText);

    if (!specialValue()) {
        cursor = qBound(prefix.size(), cursor, edit->displayText().size() - suffix.size());

        if (selsize > 0) {
            edit->setSelection(cursor, selsize);
        } else {
            edit->setCursorPosition(empty ? prefix.size() : cursor);
        }
    }
    edit->blockSignals(sb);
    q->update();
}

void QAbstractSpinBoxPrivate::setRange(const QVariant &min, const QVariant &max)
{
    Q_Q(QAbstractSpinBox);

    clearCache();
    minimum = min;
    maximum = (variantCompare(min, max) < 0 ? max : min);
    cachedSizeHint = QSize(); // minimumSizeHint doesn't care about min/max

    reset();
    if (!(bound(value) == value)) {
        setValue(bound(value), EmitIfChanged);
    } else if (value == minimum && !specialValueText.isEmpty()) {
        updateEdit();
    }

    q->updateGeometry();
}

QVariant QAbstractSpinBoxPrivate::getZeroVariant() const
{
    QVariant ret;
    switch (type) {
    case QVariant::Int: ret = QVariant((int)0); break;
    case QVariant::Double: ret = QVariant((double)0.0); break;
    default: break;
    }
    return ret;
}

QString QAbstractSpinBoxPrivate::textFromValue(const QVariant &) const
{
    return QString();
}

QVariant QAbstractSpinBoxPrivate::valueFromText(const QString &) const
{
    return QVariant();
}
void QAbstractSpinBoxPrivate::interpret(EmitPolicy ep)
{
    Q_Q(QAbstractSpinBox);
    if (type == QVariant::Invalid || cleared)
        return;

    QVariant v = getZeroVariant();
    bool doInterpret = true;
    QString tmp = edit->displayText();
    int pos = edit->cursorPosition();
    const int oldpos = pos;

    if (q->validate(tmp, pos) != QValidator::Acceptable) {
        const QString copy = tmp;
        q->fixup(tmp);
        QASBDEBUG() << "QAbstractSpinBoxPrivate::interpret() text '"
                    << edit->displayText()
                    << "' >> '" << copy << '\''
                    << "' >> '" << tmp << '\'';

        doInterpret = tmp != copy && (q->validate(tmp, pos) == QValidator::Acceptable);
        if (!doInterpret) {
            v = (correctionMode == QAbstractSpinBox::CorrectToNearestValue
                 ? variantBound(minimum, v, maximum) : value);
        }
    }
    if (doInterpret) {
        v = valueFromText(tmp);
    }
    clearCache();
    setValue(v, ep, true);
    if (oldpos != pos)
        edit->setCursorPosition(pos);
}

void QAbstractSpinBoxPrivate::clearCache() const
{
    cachedText.clear();
    cachedValue.clear();
    cachedState = QValidator::Acceptable;
}


// --- QSpinBoxValidator ---

QSpinBoxValidator::QSpinBoxValidator(QAbstractSpinBox *qp, QAbstractSpinBoxPrivate *dp)
    : QValidator(qp), qptr(qp), dptr(dp)
{
    setObjectName(QLatin1String("qt_spinboxvalidator"));
}

QValidator::State QSpinBoxValidator::validate(QString &input, int &pos) const
{
    if (dptr->specialValueText.size() > 0 && input == dptr->specialValueText)
        return QValidator::Acceptable;

    if (!dptr->prefix.isEmpty() && !input.startsWith(dptr->prefix)) {
        input.prepend(dptr->prefix);
        pos += dptr->prefix.length();
    }

    if (!dptr->suffix.isEmpty() && !input.endsWith(dptr->suffix))
        input.append(dptr->suffix);

    return qptr->validate(input, pos);
}
void QSpinBoxValidator::fixup(QString &input) const
{
    qptr->fixup(input);
}

// --- global ---

QVariant operator+(const QVariant &arg1, const QVariant &arg2)
{
    QVariant ret;
    if (arg1.type() != arg2.type())
        qWarning("QAbstractSpinBox: Internal error: Different types (%s vs %s) (%s:%d)",
                 arg1.typeName(), arg2.typeName(), __FILE__, __LINE__);
    switch (arg1.type()) {
    case QVariant::Int: ret = QVariant(arg1.toInt() + arg2.toInt()); break;
    case QVariant::Double: ret = QVariant(arg1.toDouble() + arg2.toDouble()); break;
    case QVariant::DateTime: {
        QDateTime a2 = arg2.toDateTime();
        QDateTime a1 = arg1.toDateTime().addDays(QDATETIMEEDIT_DATETIME_MIN.daysTo(a2));
        a1.setTime(a1.time().addMSecs(QTime().msecsTo(a2.time())));
        ret = QVariant(a1);
    }
    default: break;
    }
    return ret;
}


QVariant operator-(const QVariant &arg1, const QVariant &arg2)
{
    QVariant ret;
    if (arg1.type() != arg2.type())
        qWarning("QAbstractSpinBox: Internal error: Different types (%s vs %s) (%s:%d)",
                 arg1.typeName(), arg2.typeName(), __FILE__, __LINE__);
    switch (arg1.type()) {
    case QVariant::Int: ret = QVariant(arg1.toInt() - arg2.toInt()); break;
    case QVariant::Double: ret = QVariant(arg1.toDouble() - arg2.toDouble()); break;
    case QVariant::DateTime: {
        QDateTime a1 = arg1.toDateTime();
        QDateTime a2 = arg2.toDateTime();
        int days = a2.daysTo(a1);
        int secs = a2.secsTo(a1);
        int msecs = qMax(0, a1.time().msec() - a2.time().msec());
        if (days < 0 || secs < 0 || msecs < 0) {
            ret = arg1;
        } else {
            QDateTime dt = a2.addDays(days).addSecs(secs);
            if (msecs > 0)
                dt.setTime(dt.time().addMSecs(msecs));
            ret = QVariant(dt);
        }
    }
    default: break;
    }
    return ret;
}

QVariant operator*(const QVariant &arg1, double multiplier)
{
    QVariant ret;

    switch (arg1.type()) {
    case QVariant::Int: ret = QVariant((int)(arg1.toInt() * multiplier)); break;
    case QVariant::Double: ret = QVariant(arg1.toDouble() * multiplier); break;
    case QVariant::DateTime: {
        double days = QDATETIMEEDIT_DATE_MIN.daysTo(arg1.toDateTime().date()) * multiplier;
        int daysInt = (int)days;
        days -= daysInt;
        long msecs = (long)((QDATETIMEEDIT_TIME_MIN.msecsTo(arg1.toDateTime().time()) * multiplier)
                            + (days * (24 * 3600 * 1000)));
        ret = QDateTime(QDate().addDays(int(days)), QTime().addMSecs(msecs));
        break;
    }
    default: ret = arg1; break;
    }

    return ret;
}



double operator/(const QVariant &arg1, const QVariant &arg2)
{
    double a1 = 0;
    double a2 = 0;

    switch (arg1.type()) {
    case QVariant::Int:
        a1 = (double)arg1.toInt();
        a2 = (double)arg2.toInt();
        break;
    case QVariant::Double:
        a1 = arg1.toDouble();
        a2 = arg2.toDouble();
        break;
    case QVariant::DateTime:
        a1 = QDATETIMEEDIT_DATE_MIN.daysTo(arg1.toDate());
        a2 = QDATETIMEEDIT_DATE_MIN.daysTo(arg2.toDate());
        a1 += (double)QDATETIMEEDIT_TIME_MIN.msecsTo(arg1.toDateTime().time()) / (long)(3600 * 24 * 1000);
        a2 += (double)QDATETIMEEDIT_TIME_MIN.msecsTo(arg2.toDateTime().time()) / (long)(3600 * 24 * 1000);
    default: break;
    }

    return (a1 != 0 && a2 != 0) ? (a1 / a2) : 0.0;
}

int QAbstractSpinBoxPrivate::variantCompare(const QVariant &arg1, const QVariant &arg2)
{
    switch (arg2.type()) {
    case QVariant::Date:
        Q_ASSERT_X(arg1.type() == QVariant::Date, "QAbstractSpinBoxPrivate::variantCompare",
                   qPrintable(QString::fromAscii("Internal error 1 (%1)").
                              arg(QString::fromAscii(arg1.typeName()))));
        if (arg1.toDate() == arg2.toDate()) {
            return 0;
        } else if (arg1.toDate() < arg2.toDate()) {
            return -1;
        } else {
            return 1;
        }
    case QVariant::Time:
        Q_ASSERT_X(arg1.type() == QVariant::Time, "QAbstractSpinBoxPrivate::variantCompare",
                   qPrintable(QString::fromAscii("Internal error 2 (%1)").
                              arg(QString::fromAscii(arg1.typeName()))));
        if (arg1.toTime() == arg2.toTime()) {
            return 0;
        } else if (arg1.toTime() < arg2.toTime()) {
            return -1;
        } else {
            return 1;
        }


    case QVariant::DateTime:
        if (arg1.toDateTime() == arg2.toDateTime()) {
            return 0;
        } else if (arg1.toDateTime() < arg2.toDateTime()) {
            return -1;
        } else {
            return 1;
        }
    case QVariant::Int:
        if (arg1.toInt() == arg2.toInt()) {
            return 0;
        } else if (arg1.toInt() < arg2.toInt()) {
            return -1;
        } else {
            return 1;
        }
    case QVariant::Double:
        if (arg1.toDouble() == arg2.toDouble()) {
            return 0;
        } else if (arg1.toDouble() < arg2.toDouble()) {
            return -1;
        } else {
            return 1;
        }
    case QVariant::Invalid:
        if (arg2.type() == QVariant::Invalid)
            return 0;
    default:
        Q_ASSERT_X(0, "QAbstractSpinBoxPrivate::variantCompare",
                   qPrintable(QString::fromAscii("Internal error 3 (%1 %2)").
                              arg(QString::fromAscii(arg1.typeName())).
                              arg(QString::fromAscii(arg2.typeName()))));
    }
    return -2;
}

QVariant QAbstractSpinBoxPrivate::variantBound(const QVariant &min,
                                               const QVariant &value,
                                               const QVariant &max)
{
    Q_ASSERT(variantCompare(min, max) <= 0);
    if (variantCompare(min, value) < 0) {
        const int compMax = variantCompare(value, max);
        return (compMax < 0 ? value : max);
    } else {
        return min;
    }
}


QT_END_NAMESPACE

#include "moc_qabstractspinbox.cpp"

#endif // QT_NO_SPINBOX