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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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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