{- Copyright (C) 2006-2010 John MacFarlane This program 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 2 of the License, or (at your option) any later version. This program 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 this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -} {- | Module : Text.Pandoc.Writers.S5 Copyright : Copyright (C) 2006-2010 John MacFarlane License : GNU GPL, version 2 or above Maintainer : John MacFarlane Stability : alpha Portability : portable Definitions for creation of S5 powerpoint-like HTML. (See .) -} module Text.Pandoc.Writers.S5 ( -- * Header includes s5HeaderIncludes, s5Links, -- * Functions writeS5, writeS5String, insertS5Structure ) where import Text.Pandoc.Shared ( WriterOptions, readDataFile ) import Text.Pandoc.Writers.HTML ( writeHtml, writeHtmlString ) import Text.Pandoc.Definition import Text.XHtml.Strict import System.FilePath ( () ) import Data.List ( intercalate ) s5HeaderIncludes :: Maybe FilePath -> IO String s5HeaderIncludes datadir = do c <- s5CSS datadir j <- s5Javascript datadir return $ s5Meta ++ c ++ j s5Meta :: String s5Meta = "\n\n\n" s5Javascript :: Maybe FilePath -> IO String s5Javascript datadir = do jsCom <- readDataFile datadir $ "s5" "default" "slides.js.comment" jsPacked <- readDataFile datadir $ "s5" "default" "slides.js.packed" return $ "\n" s5CSS :: Maybe FilePath -> IO String s5CSS datadir = do s5CoreCSS <- readDataFile datadir $ "s5" "default" "s5-core.css" s5FramingCSS <- readDataFile datadir $ "s5" "default" "framing.css" s5PrettyCSS <- readDataFile datadir $ "s5" "default" "pretty.css" s5OperaCSS <- readDataFile datadir $ "s5" "default" "opera.css" s5OutlineCSS <- readDataFile datadir $ "s5" "default" "outline.css" s5PrintCSS <- readDataFile datadir $ "s5" "default" "print.css" return $ "\n\n\n\n" s5Links :: String s5Links = "\n\n\n\n\n\n\n" -- | Converts Pandoc document to an S5 HTML presentation (Html structure). writeS5 :: WriterOptions -> Pandoc -> Html writeS5 options = (writeHtml options) . insertS5Structure -- | Converts Pandoc document to an S5 HTML presentation (string). writeS5String :: WriterOptions -> Pandoc -> String writeS5String options = (writeHtmlString options) . insertS5Structure -- | Inserts HTML needed for an S5 presentation (e.g. around slides). layoutDiv :: [Inline] -- ^ Title of document (for header or footer) -> [Inline] -- ^ Date of document (for header or footer) -> [Block] -- ^ List of block elements returned layoutDiv title' date = [(RawHtml "
\n
\n
\n
\n
\n"), (Header 1 date), (Header 2 title'), (RawHtml "
\n
\n")] presentationStart :: Block presentationStart = RawHtml "
\n\n" presentationEnd :: Block presentationEnd = RawHtml "
\n" slideStart :: Block slideStart = RawHtml "
\n" slideEnd :: Block slideEnd = RawHtml "
\n" -- | Returns 'True' if block is a Header 1. isH1 :: Block -> Bool isH1 (Header 1 _) = True isH1 _ = False -- | Insert HTML around sections to make individual slides. insertSlides :: Bool -> [Block] -> [Block] insertSlides beginning blocks = let (beforeHead, rest) = break isH1 blocks in if (null rest) then if beginning then beforeHead else beforeHead ++ [slideEnd] else if beginning then beforeHead ++ slideStart:(head rest):(insertSlides False (tail rest)) else beforeHead ++ slideEnd:slideStart:(head rest):(insertSlides False (tail rest)) -- | Insert blocks into 'Pandoc' for slide structure. insertS5Structure :: Pandoc -> Pandoc insertS5Structure (Pandoc meta' []) = Pandoc meta' [] insertS5Structure (Pandoc (Meta title' authors date) blocks) = let slides = insertSlides True blocks firstSlide = if not (null title') then [slideStart, (Header 1 title'), (Header 3 (intercalate [LineBreak] authors)), (Header 4 date), slideEnd] else [] newBlocks = (layoutDiv title' date) ++ presentationStart:firstSlide ++ slides ++ [presentationEnd] in Pandoc (Meta title' authors date) newBlocks