155 lines
4.4 KiB
C++
155 lines
4.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QSCROLLER_H
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#define QSCROLLER_H
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#include <QtCore/QObject>
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#include <QtCore/QPointF>
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#include <QtWidgets/QScrollerProperties>
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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class QWidget;
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class QScrollerPrivate;
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class QScrollerProperties;
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#ifndef QT_NO_GESTURES
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class QFlickGestureRecognizer;
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class QMouseFlickGestureRecognizer;
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#endif
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class Q_WIDGETS_EXPORT QScroller : public QObject
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{
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Q_OBJECT
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Q_PROPERTY(State state READ state NOTIFY stateChanged)
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Q_PROPERTY(QScrollerProperties scrollerProperties READ scrollerProperties WRITE setScrollerProperties NOTIFY scrollerPropertiesChanged)
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Q_ENUMS(State)
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public:
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enum State
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{
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Inactive,
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Pressed,
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Dragging,
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Scrolling
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};
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enum ScrollerGestureType
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{
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TouchGesture,
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LeftMouseButtonGesture,
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RightMouseButtonGesture,
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MiddleMouseButtonGesture
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};
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enum Input
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{
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InputPress = 1,
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InputMove,
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InputRelease
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};
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static bool hasScroller(QObject *target);
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static QScroller *scroller(QObject *target);
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static const QScroller *scroller(const QObject *target);
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#ifndef QT_NO_GESTURES
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static Qt::GestureType grabGesture(QObject *target, ScrollerGestureType gestureType = TouchGesture);
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static Qt::GestureType grabbedGesture(QObject *target);
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static void ungrabGesture(QObject *target);
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#endif
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static QList<QScroller *> activeScrollers();
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QObject *target() const;
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State state() const;
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bool handleInput(Input input, const QPointF &position, qint64 timestamp = 0);
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void stop();
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QPointF velocity() const;
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QPointF finalPosition() const;
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QPointF pixelPerMeter() const;
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QScrollerProperties scrollerProperties() const;
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void setSnapPositionsX( const QList<qreal> &positions );
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void setSnapPositionsX( qreal first, qreal interval );
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void setSnapPositionsY( const QList<qreal> &positions );
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void setSnapPositionsY( qreal first, qreal interval );
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public Q_SLOTS:
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void setScrollerProperties(const QScrollerProperties &prop);
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void scrollTo(const QPointF &pos);
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void scrollTo(const QPointF &pos, int scrollTime);
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void ensureVisible(const QRectF &rect, qreal xmargin, qreal ymargin);
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void ensureVisible(const QRectF &rect, qreal xmargin, qreal ymargin, int scrollTime);
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void resendPrepareEvent();
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Q_SIGNALS:
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void stateChanged(QScroller::State newstate);
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void scrollerPropertiesChanged(const QScrollerProperties &);
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private:
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QScrollerPrivate *d_ptr;
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QScroller(QObject *target);
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virtual ~QScroller();
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Q_DISABLE_COPY(QScroller)
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Q_DECLARE_PRIVATE(QScroller)
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#ifndef QT_NO_GESTURES
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friend class QFlickGestureRecognizer;
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#endif
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};
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QT_END_NAMESPACE
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QT_END_HEADER
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#endif // QSCROLLER_H
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