REBOL [
    Title: "Lady Lawful Client"
    Version: 0.1
    Purpose: [To learn a bit more about REBOL.]
]

prtz: []

get-ll-json: func [jurl] [
  json: read jurl
  parts: parse json {[{" "} "," ":"]}
  clear prtz
  foreach [p] parts [
    if not zero? length? p [ append prtz p ]
  ]
  prtz
]

getPic: func [gurl] [ to-image (load-image (load to-string gurl)) ]

getPrev: func [] [ get-ll-json http://ladylawful.com/prev ]

getNext: func [] [ get-ll-json http://ladylawful.com/next ]

getCurrent: func [] [ get-ll-json http://ladylawful.com/img ]

picFull: func [ json ] [ json/2 ]

picSmall: func [ json ] [ json/4 ]

picThumb: func [ json ] [ json/6 ]

setSize: func[ pic ] [
    tx: pic/size/x + 20
    ty: pic/size/y + 20
    to-pair (as-pair tx ty)
]

refreshPic: func [w i n] [
    i /clear
    i/size: n/size
    set-face i n
    w/size: setSize n
    show w
]

v1: layout [
  at 10x10 b: image getPic picSmall getCurrent
  at 10x10 btn "PREV" [
    refreshPic v1 b getPic picSmall getPrev
  ]
  at 60x10 btn "NEXT" [
    refreshPic v1 b getPic picSmall getNext
  ]
  at 110x10 btn "QUIT" [quit]
]

view v1