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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
** this package.
**
** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QABSTRACTSLIDER_P_H
#define QABSTRACTSLIDER_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "QtCore/qbasictimer.h"
#include "QtCore/qelapsedtimer.h"
#include "private/qwidget_p.h"
#include "qstyle.h"
QT_BEGIN_NAMESPACE
class QAbstractSliderPrivate : public QWidgetPrivate
{
Q_DECLARE_PUBLIC(QAbstractSlider)
public:
QAbstractSliderPrivate();
~QAbstractSliderPrivate();
void setSteps(int single, int page);
int minimum, maximum, pageStep, value, position, pressValue;
/**
* Call effectiveSingleStep() when changing the slider value.
*/
int singleStep;
float offset_accumulated;
uint tracking : 1;
uint blocktracking :1;
uint pressed : 1;
uint invertedAppearance : 1;
uint invertedControls : 1;
Qt::Orientation orientation;
QBasicTimer repeatActionTimer;
int repeatActionTime;
QAbstractSlider::SliderAction repeatAction;
#ifdef QT_KEYPAD_NAVIGATION
int origValue;
/**
*/
bool isAutoRepeating;
/**
* When we're auto repeating, we multiply singleStep with this value to
* get our effective step.
*/
qreal repeatMultiplier;
/**
* The time of when the first auto repeating key press event occurs.
*/
QElapsedTimer firstRepeat;
#endif
inline int effectiveSingleStep() const
{
return singleStep
#ifdef QT_KEYPAD_NAVIGATION
* repeatMultiplier
#endif
;
}
virtual int bound(int val) const { return qMax(minimum, qMin(maximum, val)); }
inline int overflowSafeAdd(int add) const
{
int newValue = value + add;
if (add > 0 && newValue < value)
newValue = maximum;
else if (add < 0 && newValue > value)
newValue = minimum;
return newValue;
}
inline void setAdjustedSliderPosition(int position)
{
Q_Q(QAbstractSlider);
if (q->style()->styleHint(QStyle::SH_Slider_StopMouseOverSlider, 0, q)) {
if ((position > pressValue - 2 * pageStep) && (position < pressValue + 2 * pageStep)) {
repeatAction = QAbstractSlider::SliderNoAction;
q->setSliderPosition(pressValue);
return;
}
}
q->triggerAction(repeatAction);
}
bool scrollByDelta(Qt::Orientation orientation, Qt::KeyboardModifiers modifiers, int delta);
};
QT_END_NAMESPACE
#endif // QABSTRACTSLIDER_P_H
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