/*
 * Test the graphics module
 */
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>

#include "gnomegr.h"

#ifdef WIN32
#define sleep _sleep
#define SLEEPTIME 100
#else
#include <unistd.h>
#define SLEEPTIME 1
#endif // WIN32

GnomeBitmap my_canvas;

static void startup() {
  int i, r, c, n;
  
  n = 0;
  while (n < 2) {
      n++;
      for (i = 0; i < 8; ++i) {
	/* turn on each 8-th row of the bitmap, with shift of i */
	for (r = 0; r < my_canvas.height; ++r) {
	  if (r % 8 == i) {
	    /* Here we use the fact that the width is a factor of 8. 
	       In general this assumption cannot be made. */
	    for (c = 0; c < my_canvas.width/8; ++c) {
	      my_canvas.bits[r*my_canvas.width/8 + c] = 0xFF;
	    }
	  }
	  else {
	    /* Here we use the fact that the width is a factor of 8. 
	       In general this assumption cannot be made. */
	    for (c = 0; c < my_canvas.width/8; ++c) {
	      my_canvas.bits[r*my_canvas.width/8 + c] = 0x0;
	    }
	  }
	}
	
	/* Render the bitmap on screen */
	Render(&my_canvas);
	
	/* Wait a little */
	sleep(SLEEPTIME);
      }
  }
  
  exit(0);
}

int main(int argc, char** argv) {
  my_canvas.width = 256;
  my_canvas.height  = 256;
  my_canvas.bits = (unsigned char *)calloc(8192, 
					   sizeof(unsigned char));
  if (! my_canvas.bits)
    return -1;
  
  InitGr(&my_canvas, startup);
  
  return 0;
}