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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 QSCROLLER_H
#define QSCROLLER_H
#include <QtCore/QObject>
#include <QtCore/QPointF>
#include <QtWidgets/QScrollerProperties>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Gui)
class QWidget;
class QScrollerPrivate;
class QScrollerProperties;
#ifndef QT_NO_GESTURES
class QFlickGestureRecognizer;
class QMouseFlickGestureRecognizer;
#endif
class Q_GUI_EXPORT QScroller : public QObject
{
Q_OBJECT
Q_PROPERTY(State state READ state NOTIFY stateChanged)
Q_PROPERTY(QScrollerProperties scrollerProperties READ scrollerProperties WRITE setScrollerProperties NOTIFY scrollerPropertiesChanged)
Q_ENUMS(State)
public:
enum State
{
Inactive,
Pressed,
Dragging,
Scrolling
};
enum ScrollerGestureType
{
TouchGesture,
LeftMouseButtonGesture,
RightMouseButtonGesture,
MiddleMouseButtonGesture
};
enum Input
{
InputPress = 1,
InputMove,
InputRelease
};
static bool hasScroller(QObject *target);
static QScroller *scroller(QObject *target);
static const QScroller *scroller(const QObject *target);
#ifndef QT_NO_GESTURES
static Qt::GestureType grabGesture(QObject *target, ScrollerGestureType gestureType = TouchGesture);
static Qt::GestureType grabbedGesture(QObject *target);
static void ungrabGesture(QObject *target);
#endif
static QList<QScroller *> activeScrollers();
QObject *target() const;
State state() const;
bool handleInput(Input input, const QPointF &position, qint64 timestamp = 0);
void stop();
QPointF velocity() const;
QPointF finalPosition() const;
QPointF pixelPerMeter() const;
QScrollerProperties scrollerProperties() const;
void setSnapPositionsX( const QList<qreal> &positions );
void setSnapPositionsX( qreal first, qreal interval );
void setSnapPositionsY( const QList<qreal> &positions );
void setSnapPositionsY( qreal first, qreal interval );
public Q_SLOTS:
void setScrollerProperties(const QScrollerProperties &prop);
void scrollTo(const QPointF &pos);
void scrollTo(const QPointF &pos, int scrollTime);
void ensureVisible(const QRectF &rect, qreal xmargin, qreal ymargin);
void ensureVisible(const QRectF &rect, qreal xmargin, qreal ymargin, int scrollTime);
void resendPrepareEvent();
Q_SIGNALS:
void stateChanged(QScroller::State newstate);
void scrollerPropertiesChanged(const QScrollerProperties &);
private:
QScrollerPrivate *d_ptr;
QScroller(QObject *target);
virtual ~QScroller();
Q_DISABLE_COPY(QScroller)
Q_DECLARE_PRIVATE(QScroller)
#ifndef QT_NO_GESTURES
friend class QFlickGestureRecognizer;
#endif
};
QT_END_NAMESPACE
QT_END_HEADER
#endif // QSCROLLER_H
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