function __construct($text, $colour, $size, $rotate)
 {
     parent::ElementsBase();
     $this->set_text($text);
     $this->set_colour($colour);
     $this->set_size($size);
     $this->set_rotate($rotate);
 }
 function __construct($text = '')
 {
     parent::ElementsBase();
     $this->text = $text;
 }