/*
 * fbdash.c
 *
 * Adapted by Florian Klemenz for use in the fb_dash project
 *
 * Source and all credit goes to 
 * http://raspberrycompote.blogspot.com/
 * -------------------------------------------------------------------------------------------- 
 *
 * http://raspberrycompote.blogspot.ie/2014/03/low-level-graphics-on-raspberry-pi-part_14.html
 *
 * Original work by J-P Rosti (a.k.a -rst- and 'Raspberry Compote')
 *
 * Licensed under the Creative Commons Attribution 3.0 Unported License
 * (http://creativecommons.org/licenses/by/3.0/deed.en_US)
 *
 * Distributed in the hope that this will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 */


#include <stdio.h>
#include <sys/mman.h>
#include <fcntl.h>

#include "fblib.h"

#define WIDTH 240
#define HEIGHT 320

char *fbp = 0;

void draw() {
    clear_screen(fbp);

    // horizontal spacersint x_space = 10;
    int y_step_width = HEIGHT / 4;
    for (int i = 1; i < 4; i++) {
        int x0 = 15;
        int x1 = WIDTH - x0;
        int y = y_step_width * i;

        int r = 225;
        int g = 32;
        int b = 32;
        
        draw_line(fbp, x0, y-1, x1, y-1, r, g, b);
        draw_line(fbp, x0, y  , x1, y  , r, g, b);
        draw_line(fbp, x0, y+1, x1, y+1, r, g, b);
    }




	char *text = "Hello!";
    //render_string(fbp, arial_32, text, 0, 0, 255, 255, 255);
    render_string(fbp, basic_8, text, 0, 0, 255, 255, 255);
}

// application entry point
int main(int argc, char* argv[])
{
    int fbfd = 0;
    long int screensize = 0;

    // Open the framebuffer file for reading and writing
    fbfd = open("/dev/fb1", O_RDWR);
    if (fbfd == -1) {
        printf("Error: cannot open framebuffer device.\n");
        return(1);
    }
    printf("The framebuffer device was opened successfully.\n");

    // map fb to user mem 
    screensize = WIDTH*HEIGHT*2;
    fbp = (char*)mmap(0, 
              screensize, 
              PROT_READ | PROT_WRITE, 
              MAP_SHARED, 
              fbfd, 
              0);

    if ((int)fbp == -1) {
        printf("Failed to mmap.\n");
    }
    else {
        // draw...
        draw();
    }

    // cleanup
    //clear_screen(fbp);
    munmap(fbp, screensize);
    close(fbfd);

    return 0;
}