/Users/morten/Programmering/cpp/kick/src/kick/2d/font.h

//
// Created by morten on 30/06/14.
//


#pragma once
#include <string>
#include "kick/core/project_asset.h"
#include "kick/core/project.h"
#include "kick/core/event.h"


namespace kick {
    class Texture2D;
    class Shader;
    class Label;

    struct FontChar {
//        int id;
        int x;
        int y;
        int width;
        int height;
        int xoffset;
        int yoffset;
        int xadvance;
        int page;
        int chnl;
//        std::string letter;
    };

class Font : public ProjectAsset {
public:
    Font();
    ~Font();
    // filename is the .fnt file. There must be a .png with the same name containing the bitmap font texture in
    // the same folder
    bool loadFntFile(std::string filename = "assets/font/open_sans_28.fnt");
    int width(std::string text);
    int height();


    std::shared_ptr<Texture2D> texture() const;

    void setTexture(std::shared_ptr<Texture2D> texture);

    const FontChar getChar(char r);

    int scaleW() const;
    int scaleH() const;

    std::shared_ptr<Shader> getShader();

    void setShader(std::shared_ptr<Shader> shader);

    int base() const;

    friend class Label;

    bool initialized() const;

    Event<Font*> fontListener;
private:
    int getKerning(int t1, int t2);

    std::shared_ptr<Texture2D> mTexture;
    int mLineHeight = 0;
    int mBase = 0;
    int mScaleW = 0;
    int mScaleH = 0;
    int mPages = 1;
    std::map<int, FontChar> mFontMap;
    std::shared_ptr<Shader> fShader;
    std::map<std::pair<int, int>, int> mKerning;
};
}