/* -*- c++ -*- */
/*
 * Copyright 2013,2015 Free Software Foundation, Inc.
 *
 * This file is part of GNU Radio
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 */

#ifndef INCLUDED_QTGUI_HISTOGRAM_SINK_F_H
#define INCLUDED_QTGUI_HISTOGRAM_SINK_F_H

#include <gnuradio/qtgui/api.h>
#include <gnuradio/sync_block.h>
#include <qapplication.h>

namespace gr {
namespace qtgui {

/*!
 * \brief A graphical sink to display a histogram.
 * \ingroup instrumentation_blk
 * \ingroup qtgui_blk
 *
 * \details
 * This is a QT-based graphical sink the displays a histogram of
 * the data.
 *
 * This histogram allows you to set and change at runtime the
 * number of points to plot at once and the number of bins in the
 * histogram. Both x and y-axis have their own auto-scaling
 * behavior. By default, auto-scaling the y-axis is turned on and
 * continuously updates the y-axis max value based on the
 * currently plotted histogram.
 *
 * The x-axis auto-scaling function only updates once when
 * clicked. This resets the x-axis to the current range of minimum
 * and maximum values represented in the histogram. It resets any
 * values currently displayed because the location and width of
 * the bins may have changed.
 *
 * The histogram also has an accumulate function that simply
 * accumulates the data between calls to work. When accumulate is
 * activated, the y-axis autoscaling is turned on by default as
 * the values will quickly grow in the this direction.
 *
 * The sink supports plotting streaming float data or
 * messages. The message port is named "in". The two modes cannot
 * be used simultaneously, and \p nconnections should be set to 0
 * when using the message mode. GRC handles this issue by
 * providing the "Float Message" type that removes the streaming
 * port(s).
 *
 * This sink can plot messages that contain either uniform vectors
 * of float 32 values (pmt::is_f32vector) or PDUs where the data
 * is a uniform vector of float 32 values.
 */
class QTGUI_API histogram_sink_f : virtual public sync_block
{
public:
    // gr::qtgui::histogram_sink_f::sptr
    typedef std::shared_ptr<histogram_sink_f> sptr;

    /*!
     * \brief Build floating point histogram sink
     *
     * \param size number of points to plot at once
     * \param bins number of bins to sort the data into
     * \param xmin minimum x-axis value
     * \param xmax maximum x-axis value
     * \param name title for the plot
     * \param nconnections number of signals connected to sink
     * \param parent a QWidget parent object, if any
     */
    static sptr make(int size,
                     int bins,
                     double xmin,
                     double xmax,
                     const std::string& name,
                     int nconnections = 1,
                     QWidget* parent = NULL);

    virtual void exec_() = 0;
    virtual QWidget* qwidget() = 0;

public:
    virtual std::string title() = 0;
    virtual std::string line_label(unsigned int which) = 0;
    virtual std::string line_color(unsigned int which) = 0;
    virtual int line_width(unsigned int which) = 0;
    virtual int line_style(unsigned int which) = 0;
    virtual int line_marker(unsigned int which) = 0;
    virtual double line_alpha(unsigned int which) = 0;

    virtual void set_size(int width, int height) = 0;

    virtual void enable_menu(bool en = true) = 0;
    virtual void enable_grid(bool en = true) = 0;
    virtual void enable_autoscale(bool en = true) = 0;
    virtual void enable_semilogx(bool en = true) = 0;
    virtual void enable_semilogy(bool en = true) = 0;
    virtual void enable_accumulate(bool en = true) = 0;
    virtual void enable_axis_labels(bool en = true) = 0;
    virtual void autoscalex() = 0;
    virtual int nsamps() const = 0;
    virtual int bins() const = 0;
    virtual void reset() = 0;

    QApplication* d_qApplication;

    virtual void set_y_axis(double min, double max) = 0;
    virtual void set_x_axis(double min, double max) = 0;
    virtual void set_update_time(double t) = 0;
    virtual void set_title(const std::string& title) = 0;
    virtual void set_line_label(unsigned int which, const std::string& line) = 0;
    virtual void set_line_color(unsigned int which, const std::string& color) = 0;
    virtual void set_line_width(unsigned int which, int width) = 0;
    virtual void set_line_style(unsigned int which, int style) = 0;
    virtual void set_line_marker(unsigned int which, int marker) = 0;
    virtual void set_line_alpha(unsigned int which, double alpha) = 0;
    virtual void set_nsamps(const int newsize) = 0;
    virtual void set_bins(const int bins) = 0;
    virtual void disable_legend() = 0;
};

} /* namespace qtgui */
} /* namespace gr */

#endif /* INCLUDED_QTGUI_HISTOGRAM_SINK_F_H */
