HistogramWidget.h

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//                   OpenMS -- Open-Source Mass Spectrometry
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// Copyright The OpenMS Team -- Eberhard Karls University Tuebingen,
// ETH Zurich, and Freie Universitaet Berlin 2002-2017.
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// $Maintainer: Timo Sachsenberg $
// $Authors: Marc Sturm $
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#ifndef OPENMS_VISUAL_HISTOGRAMWIDGET_H
#define OPENMS_VISUAL_HISTOGRAMWIDGET_H

// OpenMS_GUI config
#include <OpenMS/VISUAL/OpenMS_GUIConfig.h>

// QT
#include <QtGui/QWidget>
#include <QtGui/QPixmap>
class QPaintEvent;
class QResizeEvent;
class QMouseEvent;

//OpenMS
#include <OpenMS/MATH/STATISTICS/Histogram.h>

namespace OpenMS
{
  class AxisWidget;
  class String;

  class OPENMS_GUI_DLLAPI HistogramWidget :
    public QWidget
  {
    Q_OBJECT

public:
    HistogramWidget(const Math::Histogram<> & distribution, QWidget * parent = 0);

    virtual ~HistogramWidget();

    double getLeftSplitter();

    double getRightSplitter();

    void setLegend(const String & legend);

public slots:
    void showSplitters(bool on);

    void setRightSplitter(double pos);

    void setLeftSplitter(double pos);

    void setLogMode(bool log_mode);

protected:
    Math::Histogram<> dist_;

    bool show_splitters_;

    double left_splitter_;

    double right_splitter_;

    UInt moving_splitter_;

    AxisWidget * bottom_axis_;

    UInt margin_;

    QPixmap buffer_;

    bool log_mode_;

    void invalidate_();


    void paintEvent(QPaintEvent *);
    void mousePressEvent(QMouseEvent *);
    void mouseReleaseEvent(QMouseEvent *);
    void mouseMoveEvent(QMouseEvent *);
    void resizeEvent(QResizeEvent *);

protected slots:

    void showContextMenu(const QPoint & pos);
  };
} // namespace OpenMS


#endif