#include <SDL.h>
#include <SDL_image.h>
#include <SDL_ttf.h>
#include "graph.h"

SDL_Surface *screen;		//variable globale cf commentaires

void Init_Graph()		//initialisation de SDL
{
  SDL_Init(SDL_INIT_VIDEO);
  TTF_Init();
	
//permet un acces direct au framebuffer
  screen = SDL_SetVideoMode(480, 272, 32, SDL_FULLSCREEN); 
  if(screen==NULL)
  {
	printf("Error in video driver\n:%s",SDL_GetError());
  }
  SDL_ShowCursor(SDL_DISABLE); ///< plus de curseur pour l'ecran tactile

}

void Release_Graph()		// Arrêt de SDL
{
  SDL_FreeSurface(screen);
  SDL_Quit();
  TTF_Quit();
}

void Display()			// Affichage du buffer
{
    SDL_Flip(screen);
}

void Init_BG()			// Initialisation du fond
{
   Uint32 fond;
 
   fond = SDL_MapRGB(screen->format, 220,50,50); // fond bleu
   SDL_FillRect(screen, NULL, fond);
}

void Display_Image(char *Filename, int x, int y) // affichage image
{
    SDL_Surface *Image;
    SDL_Rect position;

    Image = IMG_Load(Filename); 
    mask(Image);
    position.x = x;  
    position.y = y;
    SDL_BlitSurface(Image, NULL, screen, &position);
    SDL_FreeSurface(Image);
}

void mask(SDL_Surface *surface)		// gestion problème RVB → BVR
{
  	surface->format->Rmask = 0xFF0000;
	surface->format->Gmask = 0x00FF00;
	surface->format->Bmask = 0x0000FF;
}