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{-
sscan --- text UI for scanning with SANE
Copyright (C) 2017 Sean Whitton
This file is part of sscan.
sscan is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
sscan is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with sscan. If not, see <http://www.gnu.org/licenses/>.
-}
{-# LANGUAGE OverloadedStrings #-}
module Brick.Widgets.DefnList (defnList, Align(..)) where
import Data.Monoid
import qualified Data.Text as T
import qualified Graphics.Vty as V
import Brick.Markup (markup)
import Brick.Types
import Brick.Widgets.Core
import Data.Text.Markup ((@@))
data Align = AlignLeft | AlignRight
deriving (Eq)
defnList :: Align -> Maybe V.Attr -> [(String, String)] -> Widget ()
defnList align attr defns = vBox $ line <$> defns
where
line (label, content) = markup $
(T.pack label @@ labelAttr) <> (T.pack sep @@ V.defAttr)
<> (T.pack (gap label content) @@ V.defAttr)
<> (T.pack content @@ V.defAttr)
gap a b
| align == AlignRight =
take (maxWidth - length a - length b - length sep) $
repeat ' '
| align == AlignLeft =
take (maxLabelWidth - length a) $
repeat ' '
maxWidth = maximum $
map (\(x,y) -> length sep + length x + length y) defns
maxLabelWidth = maximum $ map (\(x,_) -> length x) defns
sep = if align == AlignRight then ": " else ": "
labelAttr = maybe V.defAttr id attr
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