Font.hpp

#pragma once
 
#include "resources/Texture.hpp"
#include "resources/Mesh.hpp"
#include "Common.hpp"
 
class Font {
public:
    enum class Alignment {
        LEFT,
        CENTER,
        RIGHT
    };
 
    explicit Font(std::istream & in);
 
    void generateLabel(const std::string & text, float scale, Mesh & mesh, Alignment align = Alignment::LEFT) const;
    
    Font & operator=(const Font &) = delete;
 
    Font(const Font &) = delete;
 
    Font & operator=(Font &&) = default;
 
    Font(Font &&) = default;
 
    const Texture * atlas() const { return _atlas; }
    
private:
    
    struct Glyph {
        glm::vec2 min; 
        glm::vec2 max; 
    };
    
    const Texture * _atlas; 
    int _firstCodepoint;    
    int _lastCodepoint;  
    glm::vec2 _margins;  
    
    std::vector<Glyph> _glyphs; 
};