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-- | Definitions for creation of S5 powerpoint-like HTML.
-- (See <http://meyerweb.com/eric/tools/s5/>.)
module Text.Pandoc.Writers.S5 (
-- * Strings
s5Javascript,
s5CSS,
s5Links,
-- * Functions
writeS5,
insertS5Structure
) where
import Text.Pandoc.Shared ( joinWithSep, WriterOptions )
import Text.Pandoc.Writers.HTML ( writeHtml )
import Text.Pandoc.Definition
s5Javascript :: String
s5Javascript = "<script type=\"text/javascript\">\n<slides.js></script>\n"
s5CoreCSS :: String
s5CoreCSS = "<s5-core.css>"
s5FramingCSS :: String
s5FramingCSS = "<framing.css>"
s5PrettyCSS :: String
s5PrettyCSS = "<pretty.css>"
s5OperaCSS :: String
s5OperaCSS = "<opera.css>"
s5OutlineCSS :: String
s5OutlineCSS = "<outline.css>"
s5PrintCSS :: String
s5PrintCSS = "<print.css>"
s5CSS :: String
s5CSS = "<style type=\"text/css\" media=\"projection\" id=\"slideProj\">\n" ++ s5CoreCSS ++ "\n" ++ s5FramingCSS ++ "\n" ++ s5PrettyCSS ++ "\n</style>\n<style type=\"text/css\" media=\"projection\" id=\"operaFix\">\n" ++ s5OperaCSS ++ "\n</style>\n<style type=\"text/css\" media=\"screen\" id=\"outlineStyle\">\n" ++ s5OutlineCSS ++ "\n</style>\n<style type=\"text/css\" media=\"print\" id=\"slidePrint\">\n" ++ s5PrintCSS ++ "\n</style>\n"
s5Links :: String
s5Links = "<!-- style sheet links -->\n<link rel=\"stylesheet\" href=\"ui/default/slides.css\" type=\"text/css\" media=\"projection\" id=\"slideProj\" />\n<link rel=\"stylesheet\" href=\"ui/default/outline.css\" type=\"text/css\" media=\"screen\" id=\"outlineStyle\" />\n<link rel=\"stylesheet\" href=\"ui/default/print.css\" type=\"text/css\" media=\"print\" id=\"slidePrint\" />\n<link rel=\"stylesheet\" href=\"ui/default/opera.css\" type=\"text/css\" media=\"projection\" id=\"operaFix\" />\n<!-- S5 JS -->\n<script src=\"ui/default/slides.js\" type=\"text/javascript\"></script>\n"
-- | Converts 'Pandoc' to an S5 HTML presentation.
writeS5 :: WriterOptions -> Pandoc -> String
writeS5 options = writeHtml options . insertS5Structure
-- | Inserts HTML needed for an S5 presentation (e.g. around slides).
layoutDiv :: [Inline] -- ^ Title of document (for header or footer)
-> String -- ^ Date of document (for header or footer)
-> [Block] -- ^ List of block elements returned
layoutDiv title date = [(RawHtml "<div class=\"layout\">\n<div id=\"controls\"></div>\n<div id=\"currentSlide\"></div>\n<div id=\"header\"></div>\n<div id=\"footer\">\n"), (Header 1 [Str date]), (Header 2 title), (RawHtml "</div>\n</div>\n")]
presentationStart = (RawHtml "<div class=\"presentation\">\n\n")
presentationEnd = (RawHtml "</div>\n")
slideStart = (RawHtml "<div class=\"slide\">\n")
slideEnd = (RawHtml "</div>\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 [Str (joinWithSep ", " authors)]), (Header 4 [Str date]), slideEnd] else [] in
let newBlocks = (layoutDiv title date) ++ presentationStart:firstSlide ++ slides ++ [presentationEnd] in
Pandoc (Meta title authors date) newBlocks
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