#include "SDL/SDL.h"
#include "SDL/SDL_image.h"
#include "SDL/SDL_ttf.h"
#include <string>
using namespace std;

SDL_Surface * LoadImage(const string &filename);
void ApplySurface(short x, short y, SDL_Surface *source, SDL_Surface *destination);

int main(int argc, char *args[])
{
    //SDL structs
    SDL_Surface *screen     = NULL;
    SDL_Surface *background = NULL;
    SDL_Surface *message    = NULL;
    TTF_Font *font = NULL;
    SDL_Event event;
    
    //used in loop
    bool quit = true;
    
    SDL_Color textcolor = {0,0,0};

    //Initializing SDL + ttf 
    if(SDL_Init(SDL_INIT_EVERYTHING) == -1)
    {
        return 1;
    }
    if(TTF_Init() == -1)
    {
        return 1;
    }
    screen = SDL_SetVideoMode(1000,1200,32,SDL_SWSURFACE);

    //Load files
    background = LoadImage("w1.jpg");
    if(background == NULL)
    {
        return 1;
    }
    font = TTF_OpenFont("C:/Windows/Fonts/OpenSymbol.ttf",24);
    if(font == NULL)
    {
        return 1; //PROCESS TERMINATED HERE!!!
    }
    message = TTF_RenderText_Solid(font , "HELLO WORLD", textcolor);

    //paint on the screen
    ApplySurface(0,0,background,screen);
    ApplySurface(200,200,message,screen);


    if(SDL_Flip(screen) == -1)
    {
        return 1;
    }

    //Event looü
    while(quit)
    {
        while(SDL_PollEvent(&event));
        {
            if(event.type == SDL_QUIT)
            {
                quit = false;
            }
        }
    }

    SDL_Quit();

    return 0;
}

SDL_Surface * LoadImage(const string &filename)
{
    SDL_Surface *loadedImage    = NULL;
    SDL_Surface *optimizedImage = NULL;
    loadedImage = IMG_Load(filename.c_str());
    if(loadedImage != NULL)
    {
        optimizedImage = SDL_DisplayFormat(loadedImage);
        SDL_FreeSurface(loadedImage);
    }
    return optimizedImage;
}

void ApplySurface(short x, short y, SDL_Surface *source, SDL_Surface *destination)
{
    SDL_Rect offset;
    offset.x = x;
    offset.y = y;
    SDL_BlitSurface(source, NULL, destination, &offset);
}