Long live Qt!

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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <qapplication.h>
+#include "qabstractslider.h"
+#include "qevent.h"
+#include "qabstractslider_p.h"
+#include "qdebug.h"
+#ifndef QT_NO_ACCESSIBILITY
+#include "qaccessible.h"
+#endif
+#include <limits.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QAbstractSlider
+    \brief The QAbstractSlider class provides an integer value within a range.
+
+    \ingroup abstractwidgets
+
+    The class is designed as a common super class for widgets like
+    QScrollBar, QSlider and QDial.
+
+    Here are the main properties of the class:
+
+    \list 1
+
+    \i \l value: The bounded integer that QAbstractSlider maintains.
+
+    \i \l minimum: The lowest possible value.
+
+    \i \l maximum: The highest possible value.
+
+    \i \l singleStep: The smaller of two natural steps that an
+    abstract sliders provides and typically corresponds to the user
+    pressing an arrow key.
+
+    \i \l pageStep: The larger of two natural steps that an abstract
+    slider provides and typically corresponds to the user pressing
+    PageUp or PageDown.
+
+    \i \l tracking: Whether slider tracking is enabled.
+
+    \i \l sliderPosition: The current position of the slider. If \l
+    tracking is enabled (the default), this is identical to \l value.
+
+    \endlist
+
+    Unity (1) may be viewed as a third step size. setValue() lets you
+    set the current value to any integer in the allowed range, not
+    just minimum() + \e n * singleStep() for integer values of \e n.
+    Some widgets may allow the user to set any value at all; others
+    may just provide multiples of singleStep() or pageStep().
+
+    QAbstractSlider emits a comprehensive set of signals:
+
+    \table
+    \header \i Signal \i Emitted when
+    \row \i \l valueChanged()
+         \i the value has changed. The \l tracking
+            determines whether this signal is emitted during user
+            interaction.
+    \row \i \l sliderPressed()
+         \i the user starts to drag the slider.
+    \row \i \l sliderMoved()
+         \i the user drags the slider.
+    \row \i \l sliderReleased()
+         \i the user releases the slider.
+    \row \i \l actionTriggered()
+         \i a slider action was triggerd.
+    \row \i \l rangeChanged()
+         \i a the range has changed.
+    \endtable
+
+    QAbstractSlider provides a virtual sliderChange() function that is
+    well suited for updating the on-screen representation of
+    sliders. By calling triggerAction(), subclasses trigger slider
+    actions. Two helper functions QStyle::sliderPositionFromValue() and
+    QStyle::sliderValueFromPosition() help subclasses and styles to map
+    screen coordinates to logical range values.
+
+    \sa QAbstractSpinBox, QSlider, QDial, QScrollBar, {Sliders Example}
+*/
+
+/*!
+    \enum QAbstractSlider::SliderAction
+
+    \value SliderNoAction
+    \value SliderSingleStepAdd
+    \value SliderSingleStepSub
+    \value SliderPageStepAdd
+    \value SliderPageStepSub
+    \value SliderToMinimum
+    \value SliderToMaximum
+    \value SliderMove
+
+*/
+
+/*!
+    \fn void QAbstractSlider::valueChanged(int value)
+
+    This signal is emitted when the slider value has changed, with the
+    new slider \a value as argument.
+*/
+
+/*!
+    \fn void QAbstractSlider::sliderPressed()
+
+    This signal is emitted when the user presses the slider with the
+    mouse, or programmatically when setSliderDown(true) is called.
+
+    \sa sliderReleased(), sliderMoved(), isSliderDown()
+*/
+
+/*!
+    \fn void QAbstractSlider::sliderMoved(int value)
+
+    This signal is emitted when sliderDown is true and the slider moves. This
+    usually happens when the user is dragging the slider. The \a value
+    is the new slider position.
+
+    This signal is emitted even when tracking is turned off.
+
+    \sa setTracking(), valueChanged(), isSliderDown(),
+    sliderPressed(), sliderReleased()
+*/
+
+/*!
+    \fn void QAbstractSlider::sliderReleased()
+
+    This signal is emitted when the user releases the slider with the
+    mouse, or programmatically when setSliderDown(false) is called.
+
+    \sa sliderPressed() sliderMoved() sliderDown
+*/
+
+/*!
+    \fn void QAbstractSlider::rangeChanged(int min, int max)
+
+    This signal is emitted when the slider range has changed, with \a
+    min being the new minimum, and \a max being the new maximum.
+
+    \sa minimum, maximum
+*/
+
+/*!
+    \fn void QAbstractSlider::actionTriggered(int action)
+
+    This signal is emitted when the slider action \a action is
+    triggered. Actions are \l SliderSingleStepAdd, \l
+    SliderSingleStepSub, \l SliderPageStepAdd, \l SliderPageStepSub,
+    \l SliderToMinimum, \l SliderToMaximum, and \l SliderMove.
+
+    When the signal is emitted, the \l sliderPosition has been
+    adjusted according to the action, but the \l value has not yet
+    been propagated (meaning the valueChanged() signal was not yet
+    emitted), and the visual display has not been updated. In slots
+    connected to this signal you can thus safely adjust any action by
+    calling setSliderPosition() yourself, based on both the action and
+    the slider's value.
+
+    \sa triggerAction()
+*/
+
+/*!
+    \enum QAbstractSlider::SliderChange
+
+    \value SliderRangeChange
+    \value SliderOrientationChange
+    \value SliderStepsChange
+    \value SliderValueChange
+*/
+
+QAbstractSliderPrivate::QAbstractSliderPrivate()
+    : minimum(0), maximum(99), singleStep(1), pageStep(10),
+      value(0), position(0), pressValue(-1), tracking(true), blocktracking(false), pressed(false),
+      invertedAppearance(false), invertedControls(false),
+      orientation(Qt::Horizontal), repeatAction(QAbstractSlider::SliderNoAction)
+{
+}
+
+QAbstractSliderPrivate::~QAbstractSliderPrivate()
+{
+}
+
+/*!
+    Sets the slider's minimum to \a min and its maximum to \a max.
+
+    If \a max is smaller than \a min, \a min becomes the only legal
+    value.
+
+    \sa minimum maximum
+*/
+void QAbstractSlider::setRange(int min, int max)
+{
+    Q_D(QAbstractSlider);
+    int oldMin = d->minimum;
+    int oldMax = d->maximum;
+    d->minimum = min;
+    d->maximum = qMax(min, max);
+    if (oldMin != d->minimum || oldMax != d->maximum) {
+        sliderChange(SliderRangeChange);
+        emit rangeChanged(d->minimum, d->maximum);
+        setValue(d->value); // re-bound
+    }
+}
+
+
+void QAbstractSliderPrivate::setSteps(int single, int page)
+{
+    Q_Q(QAbstractSlider);
+    singleStep = qAbs(single);
+    pageStep = qAbs(page);
+    q->sliderChange(QAbstractSlider::SliderStepsChange);
+}
+
+/*!
+    Constructs an abstract slider.
+
+    The \a parent arguments is sent to the QWidget constructor.
+
+    The \l minimum defaults to 0, the \l maximum to 99, with a \l
+    singleStep size of 1 and a \l pageStep size of 10, and an initial
+    \l value of 0.
+*/
+QAbstractSlider::QAbstractSlider(QWidget *parent)
+    :QWidget(*new QAbstractSliderPrivate, parent, 0)
+{
+}
+
+/*! \internal */
+QAbstractSlider::QAbstractSlider(QAbstractSliderPrivate &dd, QWidget *parent)
+    :QWidget(dd, parent, 0)
+{
+}
+
+/*!
+    Destroys the slider.
+*/
+QAbstractSlider::~QAbstractSlider()
+{
+}
+
+/*!
+    \property QAbstractSlider::orientation
+    \brief the orientation of the slider
+
+    The orientation must be \l Qt::Vertical (the default) or \l
+    Qt::Horizontal.
+*/
+void QAbstractSlider::setOrientation(Qt::Orientation orientation)
+{
+    Q_D(QAbstractSlider);
+    if (d->orientation == orientation)
+        return;
+
+    d->orientation = orientation;
+    if (!testAttribute(Qt::WA_WState_OwnSizePolicy)) {
+        QSizePolicy sp = sizePolicy();
+        sp.transpose();
+        setSizePolicy(sp);
+        setAttribute(Qt::WA_WState_OwnSizePolicy, false);
+    }
+    update();
+    updateGeometry();
+}
+
+Qt::Orientation QAbstractSlider::orientation() const
+{
+    Q_D(const QAbstractSlider);
+    return d->orientation;
+}
+
+
+/*!
+    \property QAbstractSlider::minimum
+    \brief the sliders's minimum value
+
+    When setting this property, the \l maximum is adjusted if
+    necessary to ensure that the range remains valid. Also the
+    slider's current value is adjusted to be within the new range.
+
+*/
+
+void QAbstractSlider::setMinimum(int min)
+{
+    Q_D(QAbstractSlider);
+    setRange(min, qMax(d->maximum, min));
+}
+
+int QAbstractSlider::minimum() const
+{
+    Q_D(const QAbstractSlider);
+    return d->minimum;
+}
+
+
+/*!
+    \property QAbstractSlider::maximum
+    \brief the slider's maximum value
+
+    When setting this property, the \l minimum is adjusted if
+    necessary to ensure that the range remains valid.  Also the
+    slider's current value is adjusted to be within the new range.
+
+
+*/
+
+void QAbstractSlider::setMaximum(int max)
+{
+    Q_D(QAbstractSlider);
+    setRange(qMin(d->minimum, max), max);
+}
+
+int QAbstractSlider::maximum() const
+{
+    Q_D(const QAbstractSlider);
+    return d->maximum;
+}
+
+
+
+/*!
+    \property QAbstractSlider::singleStep
+    \brief the single step.
+
+    The smaller of two natural steps that an
+    abstract sliders provides and typically corresponds to the user
+    pressing an arrow key.
+
+    \sa pageStep
+*/
+
+void QAbstractSlider::setSingleStep(int step)
+{
+    Q_D(QAbstractSlider);
+    if (step != d->singleStep)
+        d->setSteps(step, d->pageStep);
+}
+
+int QAbstractSlider::singleStep() const
+{
+    Q_D(const QAbstractSlider);
+    return d->singleStep;
+}
+
+
+/*!
+    \property QAbstractSlider::pageStep
+    \brief the page step.
+
+    The larger of two natural steps that an abstract slider provides
+    and typically corresponds to the user pressing PageUp or PageDown.
+
+    \sa singleStep
+*/
+
+void QAbstractSlider::setPageStep(int step)
+{
+    Q_D(QAbstractSlider);
+    if (step != d->pageStep)
+        d->setSteps(d->singleStep, step);
+}
+
+int QAbstractSlider::pageStep() const
+{
+    Q_D(const QAbstractSlider);
+    return d->pageStep;
+}
+
+/*!
+    \property QAbstractSlider::tracking
+    \brief whether slider tracking is enabled
+
+    If tracking is enabled (the default), the slider emits the
+    valueChanged() signal while the slider is being dragged. If
+    tracking is disabled, the slider emits the valueChanged() signal
+    only when the user releases the slider.
+
+    \sa sliderDown
+*/
+void QAbstractSlider::setTracking(bool enable)
+{
+    Q_D(QAbstractSlider);
+    d->tracking = enable;
+}
+
+bool QAbstractSlider::hasTracking() const
+{
+    Q_D(const QAbstractSlider);
+    return d->tracking;
+}
+
+
+/*!
+    \property QAbstractSlider::sliderDown
+    \brief whether the slider is pressed down.
+
+    The property is set by subclasses in order to let the abstract
+    slider know whether or not \l tracking has any effect.
+
+    Changing the slider down property emits the sliderPressed() and
+    sliderReleased() signals.
+
+*/
+void QAbstractSlider::setSliderDown(bool down)
+{
+    Q_D(QAbstractSlider);
+    bool doEmit = d->pressed != down;
+
+    d->pressed = down;
+
+    if (doEmit) {
+        if (down)
+            emit sliderPressed();
+        else
+            emit sliderReleased();
+    }
+
+    if (!down && d->position != d->value)
+        triggerAction(SliderMove);
+}
+
+bool QAbstractSlider::isSliderDown() const
+{
+    Q_D(const QAbstractSlider);
+    return d->pressed;
+}
+
+
+/*!
+    \property QAbstractSlider::sliderPosition
+    \brief the current slider position
+
+    If \l tracking is enabled (the default), this is identical to \l value.
+*/
+void QAbstractSlider::setSliderPosition(int position)
+{
+    Q_D(QAbstractSlider);
+    position = d->bound(position);
+    if (position == d->position)
+        return;
+    d->position = position;
+    if (!d->tracking)
+        update();
+    if (d->pressed)
+        emit sliderMoved(position);
+    if (d->tracking && !d->blocktracking)
+        triggerAction(SliderMove);
+}
+
+int QAbstractSlider::sliderPosition() const
+{
+    Q_D(const QAbstractSlider);
+    return d->position;
+}
+
+
+/*!
+    \property QAbstractSlider::value
+    \brief the slider's current value
+
+    The slider forces the value to be within the legal range: \l
+    minimum <= \c value <= \l maximum.
+
+    Changing the value also changes the \l sliderPosition.
+*/
+
+
+int QAbstractSlider::value() const
+{
+    Q_D(const QAbstractSlider);
+    return d->value;
+}
+
+void QAbstractSlider::setValue(int value)
+{
+    Q_D(QAbstractSlider);
+    value = d->bound(value);
+    if (d->value == value && d->position == value)
+        return;
+    d->value = value;
+    if (d->position != value) {
+        d->position = value;
+        if (d->pressed)
+            emit sliderMoved((d->position = value));
+    }
+#ifndef QT_NO_ACCESSIBILITY
+    QAccessible::updateAccessibility(this, 0, QAccessible::ValueChanged);
+#endif
+    sliderChange(SliderValueChange);
+    emit valueChanged(value);
+}
+
+/*!
+    \property QAbstractSlider::invertedAppearance
+    \brief whether or not a slider shows its values inverted.
+
+    If this property is false (the default), the minimum and maximum will
+    be shown in its classic position for the inherited widget. If the
+    value is true, the minimum and maximum appear at their opposite location.
+
+    Note: This property makes most sense for sliders and dials. For
+    scroll bars, the visual effect of the scroll bar subcontrols depends on
+    whether or not the styles understand inverted appearance; most styles
+    ignore this property for scroll bars.
+*/
+
+bool QAbstractSlider::invertedAppearance() const
+{
+    Q_D(const QAbstractSlider);
+    return d->invertedAppearance;
+}
+
+void QAbstractSlider::setInvertedAppearance(bool invert)
+{
+    Q_D(QAbstractSlider);
+    d->invertedAppearance = invert;
+    update();
+}
+
+
+/*!
+    \property QAbstractSlider::invertedControls
+    \brief whether or not the slider inverts its wheel and key events.
+
+    If this property is false, scrolling the mouse wheel "up" and using keys
+    like page up will increase the slider's value towards its maximum. Otherwise
+    pressing page up will move value towards the slider's minimum.
+*/
+
+
+bool QAbstractSlider::invertedControls() const
+{
+    Q_D(const QAbstractSlider);
+    return d->invertedControls;
+}
+
+void QAbstractSlider::setInvertedControls(bool invert)
+{
+    Q_D(QAbstractSlider);
+    d->invertedControls = invert;
+}
+
+/*!  Triggers a slider \a action.  Possible actions are \l
+  SliderSingleStepAdd, \l SliderSingleStepSub, \l SliderPageStepAdd,
+  \l SliderPageStepSub, \l SliderToMinimum, \l SliderToMaximum, and \l
+  SliderMove.
+
+  \sa actionTriggered()
+ */
+void QAbstractSlider::triggerAction(SliderAction action)
+{
+    Q_D(QAbstractSlider);
+    d->blocktracking = true;
+    switch (action) {
+    case SliderSingleStepAdd:
+        setSliderPosition(d->overflowSafeAdd(d->singleStep));
+        break;
+    case SliderSingleStepSub:
+        setSliderPosition(d->overflowSafeAdd(-d->singleStep));
+        break;
+    case SliderPageStepAdd:
+        setSliderPosition(d->overflowSafeAdd(d->pageStep));
+        break;
+    case SliderPageStepSub:
+        setSliderPosition(d->overflowSafeAdd(-d->pageStep));
+        break;
+    case SliderToMinimum:
+        setSliderPosition(d->minimum);
+        break;
+    case SliderToMaximum:
+        setSliderPosition(d->maximum);
+        break;
+    case SliderMove:
+    case SliderNoAction:
+        break;
+    };
+    emit actionTriggered(action);
+    d->blocktracking = false;
+    setValue(d->position);
+}
+
+/*!  Sets action \a action to be triggered repetitively in intervals
+of \a repeatTime, after an initial delay of \a thresholdTime.
+
+\sa triggerAction() repeatAction()
+ */
+void QAbstractSlider::setRepeatAction(SliderAction action, int thresholdTime, int repeatTime)
+{
+    Q_D(QAbstractSlider);
+    if ((d->repeatAction = action) == SliderNoAction) {
+        d->repeatActionTimer.stop();
+    } else {
+        d->repeatActionTime = repeatTime;
+        d->repeatActionTimer.start(thresholdTime, this);
+    }
+}
+
+/*!
+  Returns the current repeat action.
+  \sa setRepeatAction()
+ */
+QAbstractSlider::SliderAction QAbstractSlider::repeatAction() const
+{
+    Q_D(const QAbstractSlider);
+    return d->repeatAction;
+}
+
+/*!\reimp
+ */
+void QAbstractSlider::timerEvent(QTimerEvent *e)
+{
+    Q_D(QAbstractSlider);
+    if (e->timerId() == d->repeatActionTimer.timerId()) {
+        if (d->repeatActionTime) { // was threshold time, use repeat time next time
+            d->repeatActionTimer.start(d->repeatActionTime, this);
+            d->repeatActionTime = 0;
+        }
+        if (d->repeatAction == SliderPageStepAdd)
+            d->setAdjustedSliderPosition(d->overflowSafeAdd(d->pageStep));
+        else if (d->repeatAction == SliderPageStepSub)
+            d->setAdjustedSliderPosition(d->overflowSafeAdd(-d->pageStep));
+        else
+            triggerAction(d->repeatAction);
+    }
+}
+
+/*!
+    Reimplement this virtual function to track slider changes such as
+    \l SliderRangeChange, \l SliderOrientationChange, \l
+    SliderStepsChange, or \l SliderValueChange. The default
+    implementation only updates the display and ignores the \a change
+    parameter.
+ */
+void QAbstractSlider::sliderChange(SliderChange)
+{
+    update();
+}
+
+
+/*!
+    \reimp
+*/
+#ifndef QT_NO_WHEELEVENT
+void QAbstractSlider::wheelEvent(QWheelEvent * e)
+{
+    Q_D(QAbstractSlider);
+    e->ignore();
+    if (e->orientation() != d->orientation && !rect().contains(e->pos()))
+        return;
+
+    static qreal offset = 0;
+    static QAbstractSlider *offset_owner = 0;
+    if (offset_owner != this){
+        offset_owner = this;
+        offset = 0;
+    }
+
+    // On Mac/Cocoa, always scroll one step. The mouse wheel acceleration
+    // is higher than on other systems, so this works well in practice.
+#ifdef QT_MAC_USE_COCOA
+    int step = 1;
+#else
+    int step = qMin(QApplication::wheelScrollLines() * d->singleStep, d->pageStep);
+#endif
+    if ((e->modifiers() & Qt::ControlModifier) || (e->modifiers() & Qt::ShiftModifier))
+        step = d->pageStep;
+    int currentOffset = qRound(qreal(e->delta()) * step / 120);
+    if (currentOffset == 0)
+        currentOffset = (e->delta() < 0 ? -1 : 1);
+    offset += currentOffset;
+
+    if (d->invertedControls)
+        offset = -offset;
+
+    int prevValue = d->value;
+    d->position = d->overflowSafeAdd(int(offset)); // value will be updated by triggerAction()
+
+    triggerAction(SliderMove);
+    if (prevValue == d->value) {
+        offset = 0;
+    } else {
+        offset -= int(offset);
+        e->accept();
+    }
+}
+#endif
+/*!
+    \reimp
+*/
+void QAbstractSlider::keyPressEvent(QKeyEvent *ev)
+{
+    Q_D(QAbstractSlider);
+    SliderAction action = SliderNoAction;
+    switch (ev->key()) {
+#ifdef QT_KEYPAD_NAVIGATION
+        case Qt::Key_Select:
+            if (QApplication::keypadNavigationEnabled())
+                setEditFocus(!hasEditFocus());
+            else
+                ev->ignore();
+            break;
+        case Qt::Key_Back:
+            if (QApplication::keypadNavigationEnabled() && hasEditFocus()) {
+                setValue(d->origValue);
+                setEditFocus(false);
+            } else
+                ev->ignore();
+            break;
+#endif
+
+        // It seems we need to use invertedAppearance for Left and right, otherwise, things look weird.
+        case Qt::Key_Left:
+#ifdef QT_KEYPAD_NAVIGATION
+            if (QApplication::keypadNavigationEnabled() && !hasEditFocus()) {
+                ev->ignore();
+                return;
+            }
+            if (QApplication::keypadNavigationEnabled() && d->orientation == Qt::Vertical)
+                action = d->invertedControls ? SliderSingleStepSub : SliderSingleStepAdd;
+            else
+#endif
+            if (isRightToLeft())
+                action = d->invertedAppearance ? SliderSingleStepSub : SliderSingleStepAdd;
+            else
+                action = !d->invertedAppearance ? SliderSingleStepSub : SliderSingleStepAdd;
+            break;
+        case Qt::Key_Right:
+#ifdef QT_KEYPAD_NAVIGATION
+            if (QApplication::keypadNavigationEnabled() && !hasEditFocus()) {
+                ev->ignore();
+                return;
+            }
+            if (QApplication::keypadNavigationEnabled() && d->orientation == Qt::Vertical)
+                action = d->invertedControls ? SliderSingleStepAdd : SliderSingleStepSub;
+            else
+#endif
+            if (isRightToLeft())
+                action = d->invertedAppearance ? SliderSingleStepAdd : SliderSingleStepSub;
+            else
+                action = !d->invertedAppearance ? SliderSingleStepAdd : SliderSingleStepSub;
+            break;
+        case Qt::Key_Up:
+#ifdef QT_KEYPAD_NAVIGATION
+            if (QApplication::keypadNavigationEnabled()) {
+                ev->ignore();
+                break;
+            }
+#endif
+            action = d->invertedControls ? SliderSingleStepSub : SliderSingleStepAdd;
+            break;
+        case Qt::Key_Down:
+#ifdef QT_KEYPAD_NAVIGATION
+            if (QApplication::keypadNavigationEnabled()) {
+                ev->ignore();
+                break;
+            }
+#endif
+            action = d->invertedControls ? SliderSingleStepAdd : SliderSingleStepSub;
+            break;
+        case Qt::Key_PageUp:
+            action = d->invertedControls ? SliderPageStepSub : SliderPageStepAdd;
+            break;
+        case Qt::Key_PageDown:
+            action = d->invertedControls ? SliderPageStepAdd : SliderPageStepSub;
+            break;
+        case Qt::Key_Home:
+            action = SliderToMinimum;
+            break;
+        case Qt::Key_End:
+            action = SliderToMaximum;
+            break;
+        default:
+            ev->ignore();
+            break;
+    }
+    if (action)
+        triggerAction(action);
+}
+
+/*!
+    \reimp
+*/
+void QAbstractSlider::changeEvent(QEvent *ev)
+{
+    Q_D(QAbstractSlider);
+    switch (ev->type()) {
+    case QEvent::EnabledChange:
+        if (!isEnabled()) {
+            d->repeatActionTimer.stop();
+            setSliderDown(false);
+        }
+        // fall through...
+    default:
+        QWidget::changeEvent(ev);
+    }
+}
+
+/*!
+    \reimp
+*/
+bool QAbstractSlider::event(QEvent *e)
+{
+#ifdef QT_KEYPAD_NAVIGATION
+    Q_D(QAbstractSlider);
+    switch (e->type()) {
+    case QEvent::FocusIn:
+        d->origValue = d->value;
+        break;
+    default:
+        break;
+    }
+#endif
+
+    return QWidget::event(e);
+}
+
+/*! \fn int QAbstractSlider::minValue() const
+
+    Use minimum() instead.
+*/
+
+/*! \fn int QAbstractSlider::maxValue() const
+
+    Use maximum() instead.
+*/
+
+/*! \fn int QAbstractSlider::lineStep() const
+
+    Use singleStep() instead.
+*/
+
+/*! \fn void QAbstractSlider::setMinValue(int v)
+
+    Use setMinimum() instead.
+*/
+
+/*! \fn void QAbstractSlider::setMaxValue(int v)
+
+    Use setMaximum() instead.
+*/
+
+/*! \fn void QAbstractSlider::setLineStep(int v)
+
+    Use setSingleStep() instead.
+*/
+
+/*! \fn void QAbstractSlider::addPage()
+
+    Use triggerAction(QAbstractSlider::SliderPageStepAdd) instead.
+*/
+
+/*! \fn void QAbstractSlider::subtractPage()
+
+    Use triggerAction(QAbstractSlider::SliderPageStepSub) instead.
+*/
+
+/*! \fn void QAbstractSlider::addLine()
+
+    Use triggerAction(QAbstractSlider::SliderSingleStepAdd) instead.
+*/
+
+/*! \fn void QAbstractSlider::subtractLine()
+
+    Use triggerAction(QAbstractSlider::SliderSingleStepSub) instead.
+*/
+
+/*! \fn void QAbstractSlider::setSteps(int single, int page)
+
+    Use setSingleStep(\a single) followed by setPageStep(\a page)
+    instead.
+*/
+
+QT_END_NAMESPACE