lw_histogram.h

// *****************************************************************************
// NICOS, the Networked Instrument Control System of the FRM-II
// Copyright (c) 2009-2014 by the NICOS contributors (see AUTHORS)
//
// This program is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free Software
// Foundation; either version 2 of the License, or (at your option) any later
// version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
// details.
//
// You should have received a copy of the GNU General Public License along with
// this program; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
// Module authors:
//   Tobias Weber <tobias.weber@frm2.tum.de>
//   Georg Brandl <georg.brandl@frm2.tum.de>
//
// *****************************************************************************

#ifndef LW_HISTOGRAM_H
#define LW_HISTOGRAM_H

#include <qwt_plot_item.h>
#include <qwt_data.h>


class LWHistogramItem : public QwtPlotItem
{
  private:
    void init();

    class PrivateData;
    PrivateData *d_data;

  public:
    explicit LWHistogramItem(const QString &title = QString::null);
    explicit LWHistogramItem(const QwtText &title);
    virtual ~LWHistogramItem();

    void setData(const QwtCPointerData &data);
    const QwtCPointerData &data() const;

    void setColor(const QColor &);
    QColor color() const;

    virtual QwtDoubleRect boundingRect() const;

    virtual int rtti() const;

    virtual void draw(QPainter *, const QwtScaleMap &xMap,
        const QwtScaleMap &yMap, const QRect &) const;

    void setBaseline(double reference);
    double baseline() const;
};

#endif