TextTest.hs

import Control.Exception
import System.Exit
import qualified UI.HSCurses.Curses as Curses
import qualified UI.HSCurses.CursesHelper as CursesH
import UI.HSCurses.Widgets

twOptions sty = defaultTWOptions {twopt_style = mkDrawingStyle sty}

text sty = newTextWidget (twOptions sty) (reverse "1\n12\n123\n1234\n12345\n123456\n1234567\n12345678\n123456789\n1234567890")

textSize = (4, 4)

loop tw = do
    drawTextWidget (0, 0) textSize DHNormal tw
    c <- CursesH.getKey done
    case c of
        Curses.KeyChar 'q' -> exitWith ExitSuccess
        Curses.KeyChar ' ' -> loop $ textWidgetScrollDown textSize tw
        Curses.KeyChar '-' -> loop $ textWidgetScrollUp textSize tw
        Curses.KeyChar ',' -> loop $ textWidgetScrollLeft textSize tw
        Curses.KeyChar '.' -> loop $ textWidgetScrollRight textSize tw
        _ -> loop tw

done :: IO ()
done = return ()

styles = [CursesH.defaultStyle, CursesH.Style CursesH.WhiteF CursesH.PurpleB]

main :: IO ()
main =
    do
        CursesH.start
        cstyles <- CursesH.convertStyles styles
        Curses.cursSet Curses.CursorInvisible
        CursesH.gotoTop
        loop (text (cstyles !! 1))
        `finally` CursesH.end