Graphics2D.h

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#pragma once
 
#include <QtWidgets/QWidget>
#include <QtOpenGL>
#include "qtcsv/stringdata.h"
#include "qtcsv/reader.h"
#include "qtcsv/writer.h"
#include "qstring.h"
#include "Shader.h"
#include <string>
#include <iostream>
#include <filesystem>
#include <unordered_map>
#include "Calendar.h"
 
#include "Graphics2D.h"
 
using namespace std;
namespace fs = filesystem;
namespace std {
 
    template <>
    struct hash<Calendar>
    {
        std::size_t operator()(const Calendar& d) const
        {
            using std::size_t;
            using std::hash;
 
            // Compute individual hash values for first,
            // second and third and combine them using XOR
            // and bit shifting:
            
            return (hash<int>()(d.getYear()) << 1)
                ^ (hash<int>()(d.getMonth()) << 1)
                ^ (hash<int>()(d.getDay()) << 1);
        }
    };
}
class Graphics2D : public QOpenGLWidget, protected QOpenGLFunctions
{
    Q_OBJECT
 
public:
    Graphics2D(QWidget *parent = 0);
    ~Graphics2D();
 
protected:
    void initializeData(string filespath);
    void testData();
    void initializeGL() Q_DECL_OVERRIDE;
    void resizeGL(int w, int h) Q_DECL_OVERRIDE;
    void paintGL() Q_DECL_OVERRIDE;
 
 
    GLfloat vertices[18];
    GLfloat colors[18];
    GLfloat lines[6];
 
private:
    QOpenGLShaderProgram program;
    QOpenGLVertexArrayObject vao;
    QOpenGLBuffer vbo[2];
    unordered_map<Calendar, vector<vector<string>>> data;
 
};