GimpUi.Preview.prototype.get_bounds

function get_bounds(): [xmin: Number(gint), ymin: Number(gint), xmax: Number(gint), ymax: Number(gint)] {
    // Gjs wrapper for gimp_preview_get_bounds()
}
  
xmin

Lower bound for x

ymin

Lower bound for y

xmax

Higher bound for x

ymax

Higher bound for y