#include <gtk/gtk.h>

/*
 * Our font size is defined in cm, now we need points
 * A point is 1/72 inch.
 *
 * 20 pixels ^= 1 cm (convention)
 * 1 inch = 2.54 cm
 *
 * So point per cm is : 
 */
static float global_size_one = 72.0 / 2.54;

int main(int argc,char **argv)
{
  int w, h, wmm, hmm;
  float ppcm;

  gtk_init(&argc,&argv);

  w = gdk_screen_width();
  h = gdk_screen_height();
  wmm = gdk_screen_width_mm ();
  hmm = gdk_screen_height_mm ();

  g_print ("Screensize is %dx%d pixels  %dx%d mm\n", w, h, wmm, hmm);

  if (wmm > 0 && hmm > 0)
    g_print ("Resolution %dx%d dpi\n",
             (int)((w * 25.4) / wmm), (int)((h * 25.4) / hmm));
  else
    g_print ("Resolution info invalid\n");

  /* 20 pixels should be 1 cm */
  g_print ("Pixels per cm : %.1f x %.1f\n", w / (wmm / 10.0), h / (hmm / 10.0));
  ppcm = h / (hmm / 10.0);
  g_print ("Dia's magic font factor should be %f(w) or %f(h)\n", 
           wmm / (w / 2.0), hmm / (h / 2.0));

  return 0;
}