brick/programs/MarkupDemo.hs
2020-02-07 16:43:36 -08:00

49 lines
1.2 KiB
Haskell

{-# LANGUAGE CPP #-}
{-# LANGUAGE OverloadedStrings #-}
module Main where
#if !(MIN_VERSION_base(4,11,0))
import Data.Monoid ((<>))
#endif
import qualified Graphics.Vty as V
import Brick.Main (App(..), defaultMain, resizeOrQuit, neverShowCursor)
import Brick.Types
( Widget
, Padding(..)
)
import Brick.Widgets.Core
( (<=>)
, (<+>)
, padLeft
)
import Brick.Util (on, fg)
import Brick.Markup (markup, (@?))
import Brick.AttrMap (attrMap, AttrMap)
import Data.Text.Markup ((@@))
ui :: Widget ()
ui = (m1 <=> m2) <+> (padLeft (Pad 1) m3)
where
m1 = markup $ ("Hello" @@ fg V.blue) <> ", " <> ("world!" @@ fg V.red)
m2 = markup $ ("Hello" @? "keyword1") <> ", " <> ("world!" @? "keyword2")
m3 = markup $ ("Hello," @? "keyword1") <> "\n" <> ("world!" @? "keyword2")
theMap :: AttrMap
theMap = attrMap V.defAttr
[ ("keyword1", fg V.magenta)
, ("keyword2", V.white `on` V.blue)
]
app :: App () e ()
app =
App { appDraw = const [ui]
, appHandleEvent = resizeOrQuit
, appAttrMap = const theMap
, appStartEvent = return
, appChooseCursor = neverShowCursor
}
main :: IO ()
main = defaultMain app ()