diff options
Diffstat (limited to 'src/Text/Pandoc/Writers/LaTeX.hs')
| -rw-r--r-- | src/Text/Pandoc/Writers/LaTeX.hs | 283 |
1 files changed, 131 insertions, 152 deletions
diff --git a/src/Text/Pandoc/Writers/LaTeX.hs b/src/Text/Pandoc/Writers/LaTeX.hs index 3c952c2d1..2e340b411 100644 --- a/src/Text/Pandoc/Writers/LaTeX.hs +++ b/src/Text/Pandoc/Writers/LaTeX.hs @@ -168,9 +168,8 @@ pandocToLaTeX options (Pandoc meta blocks) = do blocks''' <- if beamer then toSlides blocks'' else return blocks'' - body <- mapM (elementToLaTeX options) $ hierarchicalize blocks''' + main <- blockListToLaTeX $ makeSections False Nothing blocks''' biblioTitle <- inlineListToLaTeX lastHeader - let main = vsep body st <- get titleMeta <- stringToLaTeX TextString $ stringify $ docTitle meta authorsMeta <- mapM (stringToLaTeX TextString . stringify) $ docAuthors meta @@ -298,16 +297,6 @@ pandocToLaTeX options (Pandoc meta blocks) = do Nothing -> main Just tpl -> renderTemplate tpl context' --- | Convert Elements to LaTeX -elementToLaTeX :: PandocMonad m => WriterOptions -> Element -> LW m (Doc Text) -elementToLaTeX _ (Blk block) = blockToLaTeX block -elementToLaTeX opts (Sec level _ (id',classes,_) title' elements) = do - modify $ \s -> s{stInHeading = True} - header' <- sectionHeader ("unnumbered" `elem` classes) id' level title' - modify $ \s -> s{stInHeading = False} - innerContents <- mapM (elementToLaTeX opts) elements - return $ vsep (header' : innerContents) - data StringContext = TextString | URLString | CodeString @@ -459,68 +448,16 @@ toSlides bs = do opts <- gets stOptions let slideLevel = fromMaybe (getSlideLevel bs) $ writerSlideLevel opts let bs' = prepSlides slideLevel bs - concat `fmap` mapM (elementToBeamer slideLevel) (hierarchicalize bs') + walkM (elementToBeamer slideLevel) (makeSections False Nothing bs') -elementToBeamer :: PandocMonad m => Int -> Element -> LW m [Block] -elementToBeamer _slideLevel (Blk (Div attrs bs)) = do - -- make sure we support "blocks" inside divs - bs' <- concat `fmap` mapM (elementToBeamer 0) (hierarchicalize bs) - return [Div attrs bs'] - -elementToBeamer _slideLevel (Blk b) = return [b] -elementToBeamer slideLevel (Sec lvl _num (ident,classes,kvs) tit elts) - | lvl > slideLevel = do - bs <- concat `fmap` mapM (elementToBeamer slideLevel) elts - return $ Para ( RawInline "latex" "\\begin{block}{" - : tit ++ [RawInline "latex" "}"] ) - : bs ++ [RawBlock "latex" "\\end{block}"] - | lvl < slideLevel = do - let isSec Sec{} = True - isSec _ = False - let (contentElts, secElts) = break isSec elts - let elts' = if null contentElts - then secElts - else Sec slideLevel [] nullAttr tit contentElts : - secElts - bs <- concat `fmap` mapM (elementToBeamer slideLevel) elts' - return $ Header lvl (ident,classes,kvs) tit : bs - | otherwise = do -- lvl == slideLevel - -- note: [fragile] is required or verbatim breaks - let hasCodeBlock (CodeBlock _ _) = [True] - hasCodeBlock _ = [] - let hasCode (Code _ _) = [True] - hasCode _ = [] - let fragile = "fragile" `elem` classes || - not (null $ query hasCodeBlock elts ++ query hasCode elts) - let frameoptions = ["allowdisplaybreaks", "allowframebreaks", "fragile", - "b", "c", "t", "environment", - "label", "plain", "shrink", "standout", - "noframenumbering"] - let optionslist = ["fragile" | fragile - , isNothing (lookup "fragile" kvs) - , "fragile" `notElem` classes] ++ - [k | k <- classes, k `elem` frameoptions] ++ - [k ++ "=" ++ v | (k,v) <- kvs, k `elem` frameoptions] - let options = if null optionslist - then "" - else "[" ++ intercalate "," optionslist ++ "]" - let latex = RawInline (Format "latex") - slideTitle <- - if tit == [Str "\0"] -- marker for hrule - then return [] - else return $ latex "{" : tit ++ [latex "}"] - ref <- toLabel ident - let slideAnchor = if null ident - then [] - else [latex ("\n\\protect\\hypertarget{" ++ - ref ++ "}{}")] - let slideStart = Para $ - RawInline "latex" ("\\begin{frame}" ++ options) : - slideTitle ++ slideAnchor - let slideEnd = RawBlock "latex" "\\end{frame}" - -- now carve up slide into blocks if there are sections inside - bs <- concat `fmap` mapM (elementToBeamer slideLevel) elts - return $ slideStart : bs ++ [slideEnd] +-- this creates section slides and marks slides with class "slide","block" +elementToBeamer :: PandocMonad m => Int -> Block -> LW m Block +elementToBeamer slideLevel d@(Div (ident,dclasses,dkvs) + xs@(Header lvl _ _ : _)) + | lvl > slideLevel = return $ Div (ident,"block":dclasses,dkvs) xs + | lvl < slideLevel = return d + | otherwise = return $ Div (ident,"slide":dclasses,dkvs) xs +elementToBeamer _ x = return x isListBlock :: Block -> Bool isListBlock (BulletList _) = True @@ -533,85 +470,87 @@ blockToLaTeX :: PandocMonad m => Block -- ^ Block to convert -> LW m (Doc Text) blockToLaTeX Null = return empty -blockToLaTeX (Div (identifier,classes,kvs) bs) - | "incremental" `elem` classes = do - let classes' = filter ("incremental"/=) classes - beamer <- gets stBeamer - if beamer - then do oldIncremental <- gets stIncremental - modify $ \s -> s{ stIncremental = True } - result <- blockToLaTeX $ Div (identifier,classes',kvs) bs - modify $ \s -> s{ stIncremental = oldIncremental } - return result - else blockToLaTeX $ Div (identifier,classes',kvs) bs - | "nonincremental" `elem` classes = do - let classes' = filter ("nonincremental"/=) classes - beamer <- gets stBeamer - if beamer - then do oldIncremental <- gets stIncremental - modify $ \s -> s{ stIncremental = False } - result <- blockToLaTeX $ Div (identifier,classes',kvs) bs - modify $ \s -> s{ stIncremental = oldIncremental } - return result - else blockToLaTeX $ Div (identifier,classes',kvs) bs - | identifier == "refs" = do - modify $ \st -> st{ stHasCslRefs = True - , stCslHangingIndent = - "hanging-indent" `elem` classes } - contents <- blockListToLaTeX bs - return $ "\\begin{cslreferences}" $$ - contents $$ - "\\end{cslreferences}" - | otherwise = do - beamer <- gets stBeamer - linkAnchor' <- hypertarget True identifier empty - -- see #2704 for the motivation for adding \leavevmode: - let linkAnchor = - case bs of - Para _ : _ - | not (isEmpty linkAnchor') - -> "\\leavevmode" <> linkAnchor' <> "%" - _ -> linkAnchor' - let align dir txt = inCmd "begin" dir $$ txt $$ inCmd "end" dir - lang <- toLang $ lookup "lang" kvs - let wrapColumns = if beamer && "columns" `elem` classes - then \contents -> - inCmd "begin" "columns" <> brackets "T" - $$ contents - $$ inCmd "end" "columns" - else id - wrapColumn = if beamer && "column" `elem` classes - then \contents -> - let w = maybe "0.48" fromPct (lookup "width" kvs) - in inCmd "begin" "column" <> - braces (text w <> "\\textwidth") - $$ contents - $$ inCmd "end" "column" - else id - fromPct xs = - case reverse xs of - '%':ds -> case safeRead (reverse ds) of - Just digits -> showFl (digits / 100 :: Double) - Nothing -> xs - _ -> xs - wrapDir = case lookup "dir" kvs of - Just "rtl" -> align "RTL" - Just "ltr" -> align "LTR" - _ -> id - wrapLang txt = case lang of - Just lng -> let (l, o) = toPolyglossiaEnv lng - ops = if null o - then "" - else brackets $ text o - in inCmd "begin" (text l) <> ops - $$ blankline <> txt <> blankline - $$ inCmd "end" (text l) - Nothing -> txt - wrapNotes txt = if beamer && "notes" `elem` classes - then "\\note" <> braces txt -- speaker notes - else linkAnchor $$ txt - (wrapColumns . wrapColumn . wrapDir . wrapLang . wrapNotes) - <$> blockListToLaTeX bs +blockToLaTeX (Div attr@(identifier,"block":_,_) (Header _ _ ils : bs)) = do + ref <- toLabel identifier + let anchor = if null identifier + then empty + else cr <> "\\protect\\hypertarget" <> + braces (text ref) <> braces empty + title' <- inlineListToLaTeX ils + contents <- blockListToLaTeX bs + wrapDiv attr $ ("\\begin{block}" <> braces title' <> anchor) $$ + contents $$ "\\end{block}" +blockToLaTeX (Div (identifier,"slide":dclasses,dkvs) + (Header _ (_,hclasses,hkvs) ils : bs)) = do + -- note: [fragile] is required or verbatim breaks + let hasCodeBlock (CodeBlock _ _) = [True] + hasCodeBlock _ = [] + let hasCode (Code _ _) = [True] + hasCode _ = [] + let classes = dclasses ++ hclasses + let kvs = dkvs ++ hkvs + let fragile = "fragile" `elem` classes || + not (null $ query hasCodeBlock bs ++ query hasCode bs) + let frameoptions = ["allowdisplaybreaks", "allowframebreaks", "fragile", + "b", "c", "t", "environment", + "label", "plain", "shrink", "standout", + "noframenumbering"] + let optionslist = ["fragile" | fragile + , isNothing (lookup "fragile" kvs) + , "fragile" `notElem` classes] ++ + [k | k <- classes, k `elem` frameoptions] ++ + [k ++ "=" ++ v | (k,v) <- kvs, k `elem` frameoptions] + let options = if null optionslist + then empty + else brackets (text (intercalate "," optionslist)) + slideTitle <- if ils == [Str "\0"] -- marker for hrule + then return empty + else braces <$> inlineListToLaTeX ils + ref <- toLabel identifier + let slideAnchor = if null identifier + then empty + else cr <> "\\protect\\hypertarget" <> + braces (text ref) <> braces empty + contents <- blockListToLaTeX bs >>= wrapDiv (identifier,classes,kvs) + return $ ("\\begin{frame}" <> options <> slideTitle <> slideAnchor) $$ + contents $$ + "\\end{frame}" +blockToLaTeX (Div (identifier@(_:_),dclasses,dkvs) + (Header lvl ("",hclasses,hkvs) ils : bs)) = do + -- move identifier from div to header + blockToLaTeX (Div ("",dclasses,dkvs) + (Header lvl (identifier,hclasses,hkvs) ils : bs)) +blockToLaTeX (Div (identifier,classes,kvs) bs) = do + beamer <- gets stBeamer + oldIncremental <- gets stIncremental + if beamer && "incremental" `elem` classes + then modify $ \st -> st{ stIncremental = True } + else if beamer && "nonincremental" `elem` classes + then modify $ \st -> st { stIncremental = False } + else return () + result <- if identifier == "refs" + then do + inner <- blockListToLaTeX bs + modify $ \st -> st{ stHasCslRefs = True + , stCslHangingIndent = + "hanging-indent" `elem` classes } + return $ "\\begin{cslreferences}" $$ + inner $$ + "\\end{cslreferences}" + else blockListToLaTeX bs + modify $ \st -> st{ stIncremental = oldIncremental } + linkAnchor' <- hypertarget True identifier empty + -- see #2704 for the motivation for adding \leavevmode: + let linkAnchor = + case bs of + Para _ : _ + | not (isEmpty linkAnchor') + -> "\\leavevmode" <> linkAnchor' <> "%" + _ -> linkAnchor' + wrapNotes txt = if beamer && "notes" `elem` classes + then "\\note" <> braces txt -- speaker notes + else linkAnchor $$ txt + wrapNotes <$> wrapDiv (identifier,classes,kvs) result blockToLaTeX (Plain lst) = inlineListToLaTeX lst -- title beginning with fig: indicates that the image is a figure @@ -1077,6 +1016,46 @@ sectionHeader unnumbered ident level lst = do braces txtNoNotes else empty +wrapDiv :: PandocMonad m => Attr -> Doc Text -> LW m (Doc Text) +wrapDiv (_,classes,kvs) t = do + beamer <- gets stBeamer + let align dir txt = inCmd "begin" dir $$ txt $$ inCmd "end" dir + lang <- toLang $ lookup "lang" kvs + let wrapColumns = if beamer && "columns" `elem` classes + then \contents -> + inCmd "begin" "columns" <> brackets "T" + $$ contents + $$ inCmd "end" "columns" + else id + wrapColumn = if beamer && "column" `elem` classes + then \contents -> + let w = maybe "0.48" fromPct (lookup "width" kvs) + in inCmd "begin" "column" <> + braces (text w <> "\\textwidth") + $$ contents + $$ inCmd "end" "column" + else id + fromPct xs = + case reverse xs of + '%':ds -> case safeRead (reverse ds) of + Just digits -> showFl (digits / 100 :: Double) + Nothing -> xs + _ -> xs + wrapDir = case lookup "dir" kvs of + Just "rtl" -> align "RTL" + Just "ltr" -> align "LTR" + _ -> id + wrapLang txt = case lang of + Just lng -> let (l, o) = toPolyglossiaEnv lng + ops = if null o + then "" + else brackets $ text o + in inCmd "begin" (text l) <> ops + $$ blankline <> txt <> blankline + $$ inCmd "end" (text l) + Nothing -> txt + return $ wrapColumns . wrapColumn . wrapDir . wrapLang $ t + hypertarget :: PandocMonad m => Bool -> String -> Doc Text -> LW m (Doc Text) hypertarget _ "" x = return x hypertarget addnewline ident x = do |