{-# LANGUAGE RecordWildCards #-}
module Graphics.Layout.Box where

data Border m n = Border {
    top :: m, bottom :: m, left :: n, right :: n
}
data Size m n = Size {inline :: n, block :: m}

data PaddedBox m n = PaddedBox {
    min :: Size m n,
    max :: Size m n,
    size :: Size m n,
    padding :: Border m n,
    border :: Border m n,
    margin :: Border m n
}
width PaddedBox {..} = left margin + left border + left padding +
    inline size + right padding + right border + right margin
height PaddedBox {..} = top margin + top border + top padding +
    block size + bottom padding + bottom border + bottom margin
minWidth PaddedBox {..} = left margin + left border + left padding +
    inline min + right padding + right border + right margin
minHeight PaddedBox {..} = top margin + top border + top padding +
    block min + bottom padding + bottom border + bottom margin

data Length = Pixels Double | Percent Double | Auto | Preferred | Min