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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: openBossa - INdT (renato.chencarek@openbossa.org)
**
** $QT_BEGIN_LICENSE:LGPL$
** 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
** the openBossa stream from INdT (renato.chencarek@openbossa.org).
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QGraphicsWidget>
struct Category
{
Category() : value(0) { }
QString name;
qreal value;
QColor color;
};
class BarChartGraphicsWidget : public QGraphicsWidget
{
Q_OBJECT
Q_PROPERTY(qreal stretch READ stretch WRITE setStretch);
public:
BarChartGraphicsWidget();
~BarChartGraphicsWidget();
virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
QWidget *widget = 0);
void addCategory(const QString &name, qreal value, const QColor &color = QColor());
void addCategory(const char *name, qreal value, const QColor &color = QColor());
void updateCategoryAt(int index, qreal value);
void clear();
void setScale(qreal scale);
qreal stretch() const { return _stretch; }
void setStretch(qreal stretch);
protected:
QColor defaultColor(int i) const;
qreal _stretch;
qreal _scale;
qreal _automaticScale;
QList<Category *> _data;
};
inline void BarChartGraphicsWidget::addCategory(const char *name, qreal value,
const QColor &color)
{
addCategory(QString(name), value, color);
}
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