HistogramItem.hh 5.61 KB
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/*===========================================================================*\
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*                                                                            *
*                              OpenFlipper                                   *
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 *           Copyright (c) 2001-2015, RWTH-Aachen University                 *
 *           Department of Computer Graphics and Multimedia                  *
 *                          All rights reserved.                             *
 *                            www.openflipper.org                            *
 *                                                                           *
 *---------------------------------------------------------------------------*
 * This file is part of OpenFlipper.                                         *
 *---------------------------------------------------------------------------*
 *                                                                           *
 * Redistribution and use in source and binary forms, with or without        *
 * modification, are permitted provided that the following conditions        *
 * are met:                                                                  *
 *                                                                           *
 * 1. Redistributions of source code must retain the above copyright notice, *
 *    this list of conditions and the following disclaimer.                  *
 *                                                                           *
 * 2. 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.   *
 *                                                                           *
 * 3. Neither the name of the copyright holder 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 HOLDER *
 * 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.              *
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*                                                                            *
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\*===========================================================================*/

/*===========================================================================*\
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*                                                                            *
*   $Revision$                                                       *
*   $LastChangedBy$                                                *
*   $Date$                     *
*                                                                            *
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\*===========================================================================*/
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#ifndef HISTOGRAM_ITEM_H
#define HISTOGRAM_ITEM_H

#include <qglobal.h>
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#include <QColor>
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#include "qwt_plot_item.h" 

class QwtIntervalData;
class QString;

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/** \brief Histogram plotting widget
 *
 * This widget can be used to render a plot. It provides a Qt widget with
 * histogram bars. The data is supplied as QwtIntervalData via HistogramItem::setData().
 * Additionally you can set colors for each bar, which are provided via
 * HistogramItem::setColors()
 *
 *
 * !!!!!!!!!!! This class is deprecated !!!!!!!!!!!
 * !!!!!!!!! Use the one from ACG/QtWidgets which is for qwt6 !!!!!!!!!!!!!!!!!!
 */
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class HistogramItem: public QwtPlotItem
{
public:
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    /// Constructor
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    explicit HistogramItem(const QString &title = QString::null);
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    /// Constructor
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    explicit HistogramItem(const QwtText &title);
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    /// Destructor
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    virtual ~HistogramItem();

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    /** \brief set data to render
     *
     * @param data data provided as QwtIntervalData
     */
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    void setData(const QwtIntervalData &data);
    const QwtIntervalData &data() const;

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    /** \brief Set colors
     *
     * @param _colors A vector of colors. One for each interval in the same order.
     */
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    void setColors( std::vector< QColor >& _colors);

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    /// Function hat will return the datas bounding rectangle (for rendering)
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    virtual QwtDoubleRect boundingRect() const;

    virtual int rtti() const;

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    /// The actual draw function, drawing the bars inside the plot widget.
    virtual void draw(QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRect &) const;
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    void setBaseline(double reference);
    double baseline() const;

    enum HistogramAttribute
    {
        Auto = 0,
        Xfy = 1
    };

    void setHistogramAttribute(HistogramAttribute, bool on = true);
    bool testHistogramAttribute(HistogramAttribute) const;

protected:
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    /// Draws a single bar
    virtual void drawBar(QPainter *, Qt::Orientation o, const QRect &) const;
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private:
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    inline QColor color(uint i) const;
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    void init();

    class PrivateData;
    PrivateData *d_data;
};

#endif