function icon($extension, $x = 0, $y = 0)
{
$keep_original = $x == 0 && $y == 0;
// This method is not necessarely called through an instance
$class = isset($this) ? $this->classname : 'Image';
$format = call_user_func(array($class, 'get_icon_default_format'));
if (!$keep_original && class_exists($class)) {
$icon_format = $format;
$class = 'Image';
if (call_user_func(array($class, 'is_supported'), 'svg')) {
$format = 'svg';
} elseif (call_user_func(array($class, 'is_supported'), 'png')) {
$format = 'png';
} else {
return false;
}
}
$name = "lib/images/icons/{$extension}.{$format}";
if (!file_exists($name)) {
$name = "lib/images/icons/unknown.{$format}";
}
if (!$keep_original) {
$icon = new $class($name, true);
if ($format != $icon_format) {
$icon->convert($icon_format);
}
$icon->resize($x, $y);
return $icon->display();
} else {
return ImageAbstract::get_from_file($name);
}
}
