Font.h

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#pragma once
 
#include <string>
#include <map>
#include <glm/glm.hpp>
#include "vapor/MyBase.h"
 
#include <ft2build.h>
#include FT_FREETYPE_H
 
namespace VAPoR {
 
struct GLManager;
 
 
class RENDER_API Font : public Wasp::MyBase {
    struct Glyph {
        unsigned int textureID;
        int          sizeX;
        int          sizeY;
        int          bearingX;
        int          bearingY;
        long         advance;
    };
 
    GLManager *_glManager;
    FT_Library _library;
    FT_Face    _face;
 
    std::map<int, Glyph> _glyphMap;
    int                  _size;
    unsigned int         _VAO, _VBO;
 
    bool  LoadGlyph(int c);
    Glyph GetGlyph(int c);
 
public:
    Font(GLManager *glManager, const std::string &path, int size, FT_Library library = nullptr);
    ~Font();
 
    void DrawText(const std::string &text, const glm::vec4 &color = glm::vec4(1));
 
    glm::vec2 TextDimensions(const std::string &text);
    float     LineHeight() const;
};
 
}    // namespace VAPoR