import Text.LaTeX
import Text.LaTeX.Packages.TikZ.Simple

main :: IO ()
main = execLaTeXT tikzsimple >>= renderFile "tikzsimple.tex"

tikzsimple :: LaTeXT IO ()
tikzsimple = thePreamble >> document theBody

thePreamble :: LaTeXT IO ()
thePreamble = do
  documentclass [] article
  usepackage [] tikz

theBody :: LaTeXT IO ()
theBody = center $ tikzpicture $ figuretikz myFigure

myFigure :: Figure
myFigure = Scale 3 $ Figures
 [ RectangleFilled (0,0) 1 1
 , Colored Green $ RectangleFilled (-1,1) 1 1
 , Colored Red   $ RectangleFilled ( 0,2) 1 1
 , Colored Blue  $ RectangleFilled ( 1,1) 1 1
   ]