/****************************************************************************
**
** 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 examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
**     the names of its contributors may be used to endorse or promote
**     products derived from this software without specific prior written
**     permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
** $QT_END_LICENSE$
**
****************************************************************************/

#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]