#include <iostream>
#include <Fl/Fl.H>
#include <FL/Fl_Box.H>
#include <FL/Fl_Timer.H>
#include <FL/Fl_Window.H>
#include <FL/fl_draw.H>


#define window_height 600
#define window_width 800

/**************************************[[l***************************************/
/* This class provides a view to copy the offscreen surface to */

//Pixel ist ein neue Class fuer ein Pixel
class Pixel : public Fl_Widget {
    Fl_Color color;
    //Pixel zu malen, x,y sind fuer die Postion in Window.w,h ist width und height.color ist die Farbe von Pixel
    void draw() {
        fl_draw_box(FL_FLAT_BOX, x(), y(), w(), h(), color);
    }

public:
    //Konstruktor
    Pixel(int x, int y, int w, int h) :
            Fl_Widget(x, y, w, h, 0) {}
    //die Farbe von Pixel einstellen
    void set_color(int RGB){
        this->color = fl_rgb_color((uchar) ((RGB & 0xff000000) >> 24), (uchar) ((RGB & 0xff0000) >> 16),
                                   (uchar) ((RGB & 0xff00) >> 8));
    }
};


class My_Window : public Fl_Window {
    int x, y, button;
    int (*color_map)[window_width][window_height];
    Pixel* pixels[window_width][window_height];
    int c=0xff000000;
    //die Inputs von Maus und Tastatur behandln
    int handle(int e) {
        switch (e) {
            //Druck vom Maus behandln
            case FL_PUSH:
                if(Fl::event_button()==FL_LEFT_MOUSE){
                    std::cout << "Mouse:left" << std::endl;
                }else if(Fl::event_button()==FL_RIGHT_MOUSE){
                    std::cout << "Mouse:right" << std::endl;
                }else{
                    std::cout << "Mouse:middle" << std::endl;
                }
                return 1;
            //Druck und Bewegung vom Maus behandln
            case FL_DRAG:
                x = Fl::event_x();
                y = Fl::event_y();
                std::cout << "Postion X:" << x << " Postion Y:" << y << std::endl;
                if(Fl::event_button()==FL_LEFT_MOUSE){
                    std::cout << "Mouse:left" << std::endl;
                }else if(Fl::event_button()==FL_RIGHT_MOUSE){
                    std::cout << "Mouse:right" << std::endl;
                }else{
                    std::cout << "Mouse:middle" << std::endl;
                }
                return 1;
            //Bewegung vom Maus behandln
            case FL_MOVE:
                x = Fl::event_x();
                y = Fl::event_y();
                std::cout << "Postion X:" << x << " Postion Y:" << y << std::endl;
                return 1;
            //Druck von der Tastator behandln
            case FL_KEYBOARD:
                button = Fl::event_button();
                std::cout << "Keyboard:" << (unsigned short) button << std::endl;
                return 1;
           // case FL_:
        }

    }

public:
    //Konstruktor
    My_Window(int x, int y, const char *l, int (*color_map)[window_width][window_height]) : Fl_Window(x, y, l) {
        this->color_map = color_map;
        for (int i = 0; i < window_width; i++) {
            for (int j = 0; j < window_height; j++) {
                pixels[i][j]=new Pixel(i,j,1,1);
            }
        }
    }
    //Window akualisieren, refresh
    int draw_bild() {
        for (int i = 0; i < window_width; i++) {
            for (int j = 0; j < window_height; j++) {
                pixels[i][j]->set_color((*color_map)[i][j]);
                pixels[i][j]->redraw();
            }
        }
    }
};

//draw_bild() wird regelmaessig anrufen
void refresh(void* pointer){
    ((My_Window*)pointer)->draw_bild();
    Fl::repeat_timeout(0.5, refresh,pointer);
}
//die Farbe von Pixels regekmaessig aendern
void change_color(void* pointer){
    int (*color_map)[window_width][window_height];
    color_map = (typeof(color_map))(pointer);
    for (int i = 0; i < 100; i++) {
        for (int j = 0; j < 100; j++) {
            (*color_map)[i][j] ^= 0xffff0000;
        }
    }

    Fl::repeat_timeout(1, change_color,pointer);
}

int main(int argc, char **argv) {

    int color_map[window_width][window_height];

    for (int i = 0; i < 100; i++) {
        for (int j = 0; j < 100; j++) {
            color_map[i][j] = 0xff000000;
        }
    }
    My_Window *window = new My_Window(window_width, window_height, "example", &color_map);
    window->begin();
    Fl::repeat_timeout(0.5, refresh,window);//refresh anrufen nach 0.5 sec
    Fl::repeat_timeout(1,change_color, &color_map);// change_color anrufen nach 1 sec

    window->end();
    window->show(argc, argv);
    return Fl::run();
} // main