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/****************************************************************************
**
** Copyright (C) 2012 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 <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]
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