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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 QMLGRAPHICSPATHVIEW_P_H
#define QMLGRAPHICSPATHVIEW_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 "qdatetime.h"
#include "qmlgraphicspathview_p.h"
#include "qmlgraphicsitem_p.h"
#include "qmlgraphicsvisualitemmodel_p.h"
#include "qml.h"
#include "private/qmlanimation_p_p.h"
QT_BEGIN_NAMESPACE
typedef struct PathViewItem{
int index;
QmlGraphicsItem* item;
}PathViewItem;
class QmlGraphicsPathViewPrivate : public QmlGraphicsItemPrivate
{
Q_DECLARE_PUBLIC(QmlGraphicsPathView)
public:
QmlGraphicsPathViewPrivate()
: path(0), currentIndex(0), startPc(0), lastDist(0)
, lastElapsed(0), stealMouse(false), ownModel(false), activeItem(0)
, snapPos(0), dragMargin(0), moveOffset(this, &QmlGraphicsPathViewPrivate::setOffset)
, firstIndex(0), pathItems(-1), pathOffset(0), requestedIndex(-1), model(0)
, moveReason(Other)
{
fixupOffsetEvent = QmlTimeLineEvent::timeLineEvent<QmlGraphicsPathViewPrivate, &QmlGraphicsPathViewPrivate::fixOffset>(&moveOffset, this);
}
void init()
{
Q_Q(QmlGraphicsPathView);
_offset = 0;
q->setAcceptedMouseButtons(Qt::LeftButton);
q->setFlag(QGraphicsItem::ItemIsFocusScope);
q->setFiltersChildEvents(true);
q->connect(&tl, SIGNAL(updated()), q, SLOT(ticked()));
}
QmlGraphicsItem *getItem(int modelIndex) {
Q_Q(QmlGraphicsPathView);
requestedIndex = modelIndex;
QmlGraphicsItem *item = model->item(modelIndex);
if (item)
item->setParentItem(q);
requestedIndex = -1;
return item;
}
void releaseItem(QmlGraphicsItem *item) {
model->release(item);
}
bool isValid() const {
return model && model->count() > 0 && model->isValid() && path;
}
int calcCurrentIndex();
void updateCurrent();
void fixOffset();
void setOffset(qreal offset);
void regenerate();
void updateItem(QmlGraphicsItem *, qreal);
void snapToCurrent();
QPointF pointNear(const QPointF &point, qreal *nearPercent=0) const;
QmlGraphicsPath *path;
int currentIndex;
qreal startPc;
QPointF startPoint;
qreal lastDist;
int lastElapsed;
qreal _offset;
bool stealMouse : 1;
bool ownModel : 1;
QTime lastPosTime;
QPointF lastPos;
QmlGraphicsItem *activeItem;
qreal snapPos;
qreal dragMargin;
QmlTimeLine tl;
QmlTimeLineValueProxy<QmlGraphicsPathViewPrivate> moveOffset;
QmlTimeLineEvent fixupOffsetEvent;
int firstIndex;
int pathItems;
int pathOffset;
int requestedIndex;
QList<QmlGraphicsItem *> items;
QmlGraphicsVisualModel *model;
QVariant modelVariant;
enum MovementReason { Other, Key, Mouse };
MovementReason moveReason;
};
QT_END_NAMESPACE
#endif
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