Method: Get current barcode.

Method: Returns an array containing original margins:

• $ret[‘left’] = left margin
• $ret[‘right’] = right margin

Method: return the height of cell repect font height.

Method: Get header font.

Method: Get Footer font.

Method: This method is used to render the page footer.

Method: This method is used to render the page header.

Method: Returns header data:

• $ret[‘logo’] = logo image
• $ret[‘logo_width’] = width of the image logo in user units
• $ret[‘title’] = header title
• $ret[‘string’] = header description string

Method: Returns header margin in user units.

Method: Returns footer margin in user units.