histogram.h

#ifndef HISTOGRAM_H
#define HISTOGRAM_H
 
// standart headers
#include <iostream>
//#include <sstream>
 
// OpenCV headers
#include <opencv2/opencv.hpp>
 
using namespace cv;
 
class Histogram
{
public:
    Histogram(int width, int height, int x_limit, int id, std::vector<double>& x_values, std::vector<float>& y_values);
    ~Histogram();
 
    static void OnMouse(int event, int x, int y, int flags, void* userdata);
    void DetectEvent(int event, int x, int y, int flags);
    void ShowHistogram();
    void SetXValues(std::vector<double> x_values);
    void SetYValues(std::vector<float> y_values);
    void SetHistogramFlag(bool flag);
    void SetHistogramWindowProperty(int prop_id, int prop_value);
 
private:
    void InitHistogramBackground();
    Mat CalcHistogram();
    bool IsInteracted(int x, int interval);
    void PlotMouseValue(Mat& frame, int value_idx);
    std::string to_string_with_precision(const float value, const int n = 6);
 
protected:
    bool is_histogram_plotted_;
 
private:
    std::string winname_;
    float histogram_offset_;
    int histogram_frame_width_;
    int histogram_frame_height_;
    Mat histogram_;
    Mat histogram_background_;
    std::vector<double>* x_values_;
    std::vector<float>* y_values_;
    float axis_signature_offset_;
    float signature_interval_;
    int signature_amount_;
    int x_limit_;
    Point2i last_mouse_coordinates_;
    float dead_zone_coeff_;
 
};
 
#endif