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/****************************************************************************
**
** Copyright (C) 2010 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_P_H
#define QMLGRAPHICSFLICKABLE_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 "qmlgraphicsflickable_p.h"
#include "qmlgraphicsitem_p.h"
#include <qml.h>
#include <qmltimeline_p_p.h>
#include <qmlanimation_p_p.h>
#include <qdatetime.h>
QT_BEGIN_NAMESPACE
class QmlGraphicsFlickableVisibleArea;
class QmlGraphicsFlickablePrivate : public QmlGraphicsItemPrivate
{
Q_DECLARE_PUBLIC(QmlGraphicsFlickable)
public:
QmlGraphicsFlickablePrivate();
void init();
virtual void flickX(qreal velocity);
virtual void flickY(qreal velocity);
virtual void fixupX();
virtual void fixupY();
void updateBeginningEnd();
void captureDelayedPress(QGraphicsSceneMouseEvent *event);
void clearDelayedPress();
void setRoundedViewportX(qreal x);
void setRoundedViewportY(qreal y);
public:
QmlGraphicsItem *viewport;
QmlTimeLineValueProxy<QmlGraphicsFlickablePrivate> _moveX;
QmlTimeLineValueProxy<QmlGraphicsFlickablePrivate> _moveY;
QmlTimeLine timeline;
qreal vWidth;
qreal vHeight;
bool overShoot : 1;
bool flicked : 1;
bool moving : 1;
bool stealMouse : 1;
bool pressed : 1;
bool atXEnd : 1;
bool atXBeginning : 1;
bool atYEnd : 1;
bool atYBeginning : 1;
bool interactive : 1;
QTime lastPosTime;
QPointF lastPos;
QPointF pressPos;
qreal pressX;
qreal pressY;
qreal velocityX;
qreal velocityY;
QTime pressTime;
qreal deceleration;
qreal maxVelocity;
QTime velocityTime;
QPointF lastFlickablePosition;
qreal reportedVelocitySmoothing;
qreal flickTargetX;
qreal flickTargetY;
QGraphicsSceneMouseEvent *delayedPressEvent;
QGraphicsItem *delayedPressTarget;
QBasicTimer delayedPressTimer;
int pressDelay;
int fixupDuration;
static void fixupY_callback(void *);
static void fixupX_callback(void *);
void updateVelocity();
struct Velocity : public QmlTimeLineValue
{
Velocity(QmlGraphicsFlickablePrivate *p)
: parent(p) {}
virtual void setValue(qreal v) {
QmlTimeLineValue::setValue(v);
parent->updateVelocity();
}
QmlGraphicsFlickablePrivate *parent;
};
Velocity horizontalVelocity;
Velocity verticalVelocity;
int vTime;
QmlTimeLine velocityTimeline;
QmlGraphicsFlickableVisibleArea *visibleArea;
QmlGraphicsFlickable::FlickDirection flickDirection;
void handleMousePressEvent(QGraphicsSceneMouseEvent *);
void handleMouseMoveEvent(QGraphicsSceneMouseEvent *);
void handleMouseReleaseEvent(QGraphicsSceneMouseEvent *);
// flickableData property
static void data_append(QmlListProperty<QObject> *, QObject *);
};
class QmlGraphicsFlickableVisibleArea : public QObject
{
Q_OBJECT
Q_PROPERTY(qreal xPosition READ xPosition NOTIFY pageChanged)
Q_PROPERTY(qreal yPosition READ yPosition NOTIFY pageChanged)
Q_PROPERTY(qreal widthRatio READ widthRatio NOTIFY pageChanged)
Q_PROPERTY(qreal heightRatio READ heightRatio NOTIFY pageChanged)
public:
QmlGraphicsFlickableVisibleArea(QmlGraphicsFlickable *parent=0);
qreal xPosition() const;
qreal widthRatio() const;
qreal yPosition() const;
qreal heightRatio() const;
void updateVisible();
signals:
void pageChanged();
private:
QmlGraphicsFlickable *flickable;
qreal m_xPosition;
qreal m_widthRatio;
qreal m_yPosition;
qreal m_heightRatio;
};
QT_END_NAMESPACE
QML_DECLARE_TYPE(QmlGraphicsFlickableVisibleArea)
#endif
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