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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative 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 QMLGRAPHICSFLICKABLE_H
#define QMLGRAPHICSFLICKABLE_H
#include "qmlgraphicsitem.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Declarative)
class QmlGraphicsFlickablePrivate;
class QmlGraphicsFlickableVisibleArea;
class Q_DECLARATIVE_EXPORT QmlGraphicsFlickable : public QmlGraphicsItem
{
Q_OBJECT
Q_PROPERTY(qreal viewportWidth READ viewportWidth WRITE setViewportWidth NOTIFY viewportWidthChanged)
Q_PROPERTY(qreal viewportHeight READ viewportHeight WRITE setViewportHeight NOTIFY viewportHeightChanged)
Q_PROPERTY(qreal viewportX READ viewportX WRITE setViewportX NOTIFY positionXChanged)
Q_PROPERTY(qreal viewportY READ viewportY WRITE setViewportY NOTIFY positionYChanged)
Q_PROPERTY(qreal horizontalVelocity READ horizontalVelocity NOTIFY horizontalVelocityChanged)
Q_PROPERTY(qreal verticalVelocity READ verticalVelocity NOTIFY verticalVelocityChanged)
Q_PROPERTY(qreal reportedVelocitySmoothing READ reportedVelocitySmoothing WRITE setReportedVelocitySmoothing NOTIFY reportedVelocitySmoothingChanged)
Q_PROPERTY(bool overShoot READ overShoot WRITE setOverShoot)
Q_PROPERTY(qreal maximumFlickVelocity READ maximumFlickVelocity WRITE setMaximumFlickVelocity)
Q_PROPERTY(qreal flickDeceleration READ flickDeceleration WRITE setFlickDeceleration)
Q_PROPERTY(bool moving READ isMoving NOTIFY movingChanged)
Q_PROPERTY(bool flicking READ isFlicking NOTIFY flickingChanged)
Q_PROPERTY(FlickDirection flickDirection READ flickDirection WRITE setFlickDirection NOTIFY flickDirectionChanged)
Q_PROPERTY(bool interactive READ isInteractive WRITE setInteractive NOTIFY interactiveChanged)
Q_PROPERTY(int pressDelay READ pressDelay WRITE setPressDelay)
Q_PROPERTY(bool atXEnd READ isAtXEnd NOTIFY isAtBoundaryChanged)
Q_PROPERTY(bool atYEnd READ isAtYEnd NOTIFY isAtBoundaryChanged)
Q_PROPERTY(bool atXBeginning READ isAtXBeginning NOTIFY isAtBoundaryChanged)
Q_PROPERTY(bool atYBeginning READ isAtYBeginning NOTIFY isAtBoundaryChanged)
Q_PROPERTY(QmlGraphicsFlickableVisibleArea *visibleArea READ visibleArea CONSTANT)
Q_PROPERTY(QmlList<QObject *>* flickableData READ flickableData)
Q_PROPERTY(QmlList<QmlGraphicsItem *>* flickableChildren READ flickableChildren)
Q_CLASSINFO("DefaultProperty", "flickableData")
Q_ENUMS(FlickDirection)
public:
QmlGraphicsFlickable(QmlGraphicsItem *parent=0);
~QmlGraphicsFlickable();
QmlList<QObject *> *flickableData();
QmlList<QmlGraphicsItem *> *flickableChildren();
bool overShoot() const;
void setOverShoot(bool);
qreal viewportWidth() const;
void setViewportWidth(qreal);
qreal viewportHeight() const;
void setViewportHeight(qreal);
qreal viewportX() const;
void setViewportX(qreal pos);
qreal viewportY() const;
void setViewportY(qreal pos);
bool isMoving() const;
bool isFlicking() const;
int pressDelay() const;
void setPressDelay(int delay);
qreal reportedVelocitySmoothing() const;
void setReportedVelocitySmoothing(qreal);
qreal maximumFlickVelocity() const;
void setMaximumFlickVelocity(qreal);
qreal flickDeceleration() const;
void setFlickDeceleration(qreal);
bool isInteractive() const;
void setInteractive(bool);
qreal horizontalVelocity() const;
qreal verticalVelocity() const;
bool isAtXEnd() const;
bool isAtXBeginning() const;
bool isAtYEnd() const;
bool isAtYBeginning() const;
QmlGraphicsItem *viewport();
enum FlickDirection { AutoFlickDirection=0x00, HorizontalFlick=0x01, VerticalFlick=0x02, HorizontalAndVerticalFlick=0x03 };
FlickDirection flickDirection() const;
void setFlickDirection(FlickDirection);
Q_SIGNALS:
void viewportWidthChanged();
void viewportHeightChanged();
void positionXChanged();
void positionYChanged();
void movingChanged();
void flickingChanged();
void movementStarted();
void movementEnded();
void flickStarted();
void flickEnded();
void reportedVelocitySmoothingChanged(int);
void horizontalVelocityChanged();
void verticalVelocityChanged();
void isAtBoundaryChanged();
void pageChanged();
void flickDirectionChanged();
void interactiveChanged();
protected:
virtual bool sceneEventFilter(QGraphicsItem *, QEvent *);
void mousePressEvent(QGraphicsSceneMouseEvent *event);
void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
void wheelEvent(QGraphicsSceneWheelEvent *event);
void timerEvent(QTimerEvent *event);
QmlGraphicsFlickableVisibleArea *visibleArea();
protected Q_SLOTS:
virtual void ticked();
void movementStarting();
void movementEnding();
void heightChange();
void widthChange();
protected:
virtual qreal minXExtent() const;
virtual qreal minYExtent() const;
virtual qreal maxXExtent() const;
virtual qreal maxYExtent() const;
qreal vWidth() const;
qreal vHeight() const;
virtual void viewportMoved();
bool sendMouseEvent(QGraphicsSceneMouseEvent *event);
bool xflick() const;
bool yflick() const;
void cancelFlick();
protected:
QmlGraphicsFlickable(QmlGraphicsFlickablePrivate &dd, QmlGraphicsItem *parent);
private:
Q_DISABLE_COPY(QmlGraphicsFlickable)
Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QmlGraphicsFlickable)
friend class QmlGraphicsFlickableVisibleArea;
};
QT_END_NAMESPACE
QML_DECLARE_TYPE(QmlGraphicsFlickable)
QT_END_HEADER
#endif
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