gulp uglify rename gfi header pkg banner banner banner pkg pkg extname Zoom Service Zoom target delta img original Full Width original Full Height max Scale Factor viewport Height viewport Width Aspect Ratio viewport Aspect Ratio Offset viewport viewport Center Center target Transform Wrap Transform img delta Query touch Move Listener initial Touch Position initial Touch Position initial Position initial Position active Zoom active Zoom active Zoom bound Click listen cancel Bubble cancel Bubble zoom active Zoom Handler Handler click Handler touch Start touch Move target Wrap target Wrap overlay overlay full Width full Width full Height full Height target OFFSET MAX WIDTH MAX HEIGHT onload src zoom zoom Original img Scale Factor img Scale Factor img Scale Factor calculate Zoom translate translate trigger Animation dispose