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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples 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 either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/

#include "imageitem.h"

//! [0]
ImageItem::ImageItem(int id, const QPixmap &pixmap, QGraphicsItem *parent,
                     QGraphicsScene *scene)
    : QGraphicsPixmapItem(pixmap, parent, scene)
{
    recordId = id;
    setAcceptsHoverEvents(true);

    timeLine.setDuration(150);
    timeLine.setFrameRange(0, 150);

    connect(&timeLine, SIGNAL(frameChanged(int)), this, SLOT(setFrame(int)));
    connect(&timeLine, SIGNAL(finished()), this, SLOT(updateItemPosition()));

    adjust();
}
//! [0]

//! [1]
void ImageItem::hoverEnterEvent(QGraphicsSceneHoverEvent * /*event*/)
{
    timeLine.setDirection(QTimeLine::Forward);

    if (z != 1.0) {
        z = 1.0;
        updateItemPosition();
    }

    if (timeLine.state() == QTimeLine::NotRunning)
        timeLine.start();
}
//! [1]

//! [2]
void ImageItem::hoverLeaveEvent(QGraphicsSceneHoverEvent * /*event*/)
{
    timeLine.setDirection(QTimeLine::Backward);
    if (z != 0.0)
        z = 0.0;

    if (timeLine.state() == QTimeLine::NotRunning)
        timeLine.start();
}
//! [2]

//! [3]
void ImageItem::setFrame(int frame)
{
    adjust();
    QPointF center = boundingRect().center();

    translate(center.x(), center.y());
    scale(1 + frame / 330.0, 1 + frame / 330.0);
    translate(-center.x(), -center.y());
}
//! [3]

//! [4]
void ImageItem::adjust()
{
    QMatrix matrix;
    matrix.scale(150/ boundingRect().width(), 120/ boundingRect().height());
    setMatrix(matrix);
}
//! [4]

//! [5]
int ImageItem::id()
{
    return recordId;
}
//! [5]

//! [6]
void ImageItem::updateItemPosition()
{
    setZValue(z);
}
//! [6]