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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 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 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.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include <QtGui>

#include "stareditor.h"
#include "starrating.h"

//! [0]
StarEditor::StarEditor(QWidget *parent)
    : QWidget(parent)
{
    setMouseTracking(true);
    setAutoFillBackground(true);
}
//! [0]

QSize StarEditor::sizeHint() const
{
    return myStarRating.sizeHint();
}

//! [1]
void StarEditor::paintEvent(QPaintEvent *)
{
    QPainter painter(this);
    myStarRating.paint(&painter, rect(), this->palette(),
                       StarRating::Editable);
}
//! [1]

//! [2]
void StarEditor::mouseMoveEvent(QMouseEvent *event)
{
    int star = starAtPosition(event->x());

    if (star != myStarRating.starCount() && star != -1) {
        myStarRating.setStarCount(star);
        update();
    }
}
//! [2]

//! [3]
void StarEditor::mouseReleaseEvent(QMouseEvent * /* event */)
{
    emit editingFinished();
}
//! [3]

//! [4]
int StarEditor::starAtPosition(int x)
{
    int star = (x / (myStarRating.sizeHint().width()
                     / myStarRating.maxStarCount())) + 1;
    if (star <= 0 || star > myStarRating.maxStarCount())
        return -1;

    return star;
}
//! [4]