/****************************************************************************

**

** 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 <math.h>

#include "starrating.h"

const int PaintingScaleFactor = 20;

//! [0]

StarRating::StarRating(int starCount, int maxStarCount)

{

    myStarCount = starCount;

    myMaxStarCount = maxStarCount;

    starPolygon << QPointF(1.0, 0.5);

    for (int i = 1; i < 5; ++i)

        starPolygon << QPointF(0.5 + 0.5 * cos(0.8 * i * 3.14),

                               0.5 + 0.5 * sin(0.8 * i * 3.14));

    diamondPolygon << QPointF(0.4, 0.5) << QPointF(0.5, 0.4)

                   << QPointF(0.6, 0.5) << QPointF(0.5, 0.6)

                   << QPointF(0.4, 0.5);

}

//! [0]

//! [1]

QSize StarRating::sizeHint() const

{

    return PaintingScaleFactor * QSize(myMaxStarCount, 1);

}

//! [1]

//! [2]

void StarRating::paint(QPainter *painter, const QRect &rect,

                       const QPalette &palette, EditMode mode) const

{

    painter->save();

    painter->setRenderHint(QPainter::Antialiasing, true);

    painter->setPen(Qt::NoPen);

    if (mode == Editable) {

        painter->setBrush(palette.highlight());

    } else {

        painter->setBrush(palette.foreground());

    }

    int yOffset = (rect.height() - PaintingScaleFactor) / 2;

    painter->translate(rect.x(), rect.y() + yOffset);

    painter->scale(PaintingScaleFactor, PaintingScaleFactor);

    for (int i = 0; i < myMaxStarCount; ++i) {

        if (i < myStarCount) {

            painter->drawPolygon(starPolygon, Qt::WindingFill);

        } else if (mode == Editable) {

            painter->drawPolygon(diamondPolygon, Qt::WindingFill);

        }

        painter->translate(1.0, 0.0);

    }

    painter->restore();

}

//! [2]