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|
{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ScopedTypeVariables #-}
{- |
Module : Text.Pandoc.Writers.Docx.Table
Copyright : Copyright (C) 2012-2021 John MacFarlane
License : GNU GPL, version 2 or above
Maintainer : John MacFarlane <jgm@berkeley.edu>
Conversion of table blocks to docx.
-}
module Text.Pandoc.Writers.Docx.Table
( tableToOpenXML
) where
import Control.Monad.State.Strict
import Data.Array
import Data.Text (Text)
import Text.Pandoc.Definition
import Text.Pandoc.Class.PandocMonad (PandocMonad)
import Text.Pandoc.Writers.Docx.Types
import Text.Pandoc.Shared
import Text.Printf (printf)
import Text.Pandoc.Writers.GridTable hiding (Table)
import Text.Pandoc.Writers.OOXML
import Text.Pandoc.XML.Light as XML hiding (Attr)
import qualified Data.Text as T
import qualified Text.Pandoc.Writers.GridTable as Grid
tableToOpenXML :: PandocMonad m
=> ([Block] -> WS m [Content])
-> Grid.Table
-> WS m [Content]
tableToOpenXML blocksToOpenXML gridTable = do
setFirstPara
modify $ \s -> s { stInTable = True }
let (Grid.Table _attr caption colspecs _rowheads thead tbodies tfoot) =
gridTable
let (Caption _maybeShortCaption captionBlocks) = caption
let captionStr = stringify captionBlocks
captionXml <- if null captionBlocks
then return []
else withParaPropM (pStyleM "Table Caption")
$ blocksToOpenXML captionBlocks
head' <- cellGridToOpenXML blocksToOpenXML thead
bodies <- mapM (cellGridToOpenXML blocksToOpenXML) tbodies
foot' <- cellGridToOpenXML blocksToOpenXML tfoot
let hasHeader = not . null . indices . partRowAttrs $ thead
-- for compatibility with Word <= 2007, we include a val with a bitmask
-- 0×0020 Apply first row conditional formatting
-- 0×0040 Apply last row conditional formatting
-- 0×0080 Apply first column conditional formatting
-- 0×0100 Apply last column conditional formatting
-- 0×0200 Do not apply row banding conditional formatting
-- 0×0400 Do not apply column banding conditional formattin
let tblLookVal = if hasHeader then (0x20 :: Int) else 0
let (gridCols, tblWattr) = tableLayout (elems colspecs)
let tbl = mknode "w:tbl" []
( mknode "w:tblPr" []
( mknode "w:tblStyle" [("w:val","Table")] () :
mknode "w:tblW" tblWattr () :
mknode "w:tblLook" [("w:firstRow",if hasHeader then "1" else "0")
,("w:lastRow","0")
,("w:firstColumn","0")
,("w:lastColumn","0")
,("w:noHBand","0")
,("w:noVBand","0")
,("w:val", T.pack $ printf "%04x" tblLookVal)
] () :
[ mknode "w:tblCaption" [("w:val", captionStr)] ()
| not (T.null captionStr) ]
)
: mknode "w:tblGrid" [] gridCols
: head' ++ mconcat bodies ++ foot'
)
modify $ \s -> s { stInTable = False }
return $ captionXml ++ [Elem tbl]
alignmentToString :: Alignment -> Text
alignmentToString = \case
AlignLeft -> "left"
AlignRight -> "right"
AlignCenter -> "center"
AlignDefault -> "left"
tableLayout :: [ColSpec] -> ([Element], [(Text, Text)])
tableLayout specs =
let
textwidth = 7920 -- 5.5 in in twips (1 twip == 1/20 pt)
fullrow = 5000 -- 100% specified in pct (1 pct == 1/50th of a percent)
ncols = length specs
getWidth = \case
ColWidth n -> n
_ -> 0
widths = map (getWidth . snd) specs
rowwidth = round (fullrow * sum widths) :: Int
widthToTwips w = floor (textwidth * w) :: Int
mkGridCol w = mknode "w:gridCol" [("w:w", tshow (widthToTwips w))] ()
in if all (== 0) widths
then ( replicate ncols $ mkGridCol (1.0 / fromIntegral ncols)
, [ ("w:type", "auto"), ("w:w", "0")])
else ( map mkGridCol widths
, [ ("w:type", "pct"), ("w:w", tshow rowwidth) ])
cellGridToOpenXML :: PandocMonad m
=> ([Block] -> WS m [Content])
-> Part
-> WS m [Element]
cellGridToOpenXML blocksToOpenXML part@(Part _ _ rowAttrs) =
if null (indices rowAttrs)
then return mempty
else mapM (rowToOpenXML blocksToOpenXML) $ partToRows part
data OOXMLCell
= OOXMLCell Attr Alignment RowSpan ColSpan [Block]
| OOXMLCellMerge ColSpan
data OOXMLRow = OOXMLRow Attr [OOXMLCell]
partToRows :: Part -> [OOXMLRow]
partToRows part =
let
toOOXMLCell :: RowIndex -> ColIndex -> GridCell -> [OOXMLCell]
toOOXMLCell ridx cidx = \case
ContentCell attr align rowspan colspan blocks ->
[OOXMLCell attr align rowspan colspan blocks]
ContinuationCell idx'@(ridx',cidx') | ridx /= ridx', cidx == cidx' ->
case (partCellArray part)!idx' of
(ContentCell _ _ _ colspan _) -> [OOXMLCellMerge colspan]
x -> error $ "Content cell expected, got, " ++ show x ++
" at index " ++ show idx'
_ -> mempty
mkRow :: (RowIndex, Attr) -> OOXMLRow
mkRow (ridx, attr) = OOXMLRow attr
. concatMap (uncurry $ toOOXMLCell ridx)
. assocs
. rowArray ridx
$ partCellArray part
in map mkRow $ assocs (partRowAttrs part)
rowToOpenXML :: PandocMonad m
=> ([Block] -> WS m [Content])
-> OOXMLRow
-> WS m Element
rowToOpenXML blocksToOpenXML (OOXMLRow _attr cells) = do
xmlcells <- mapM (ooxmlCellToOpenXML blocksToOpenXML) cells
-- let align' = case align of
-- AlignDefault -> colAlign
-- _ -> align
return $ mknode "w:tr" [] xmlcells
ooxmlCellToOpenXML :: PandocMonad m
=> ([Block] -> WS m [Content])
-> OOXMLCell
-> WS m Element
ooxmlCellToOpenXML blocksToOpenXML = \case
OOXMLCellMerge (ColSpan colspan) -> do
return $ mknode "w:tc" []
[ mknode "w:tcPr" [] [ mknode "w:gridSpan" [("w:val", tshow colspan)] ()
, mknode "w:vMerge" [("w:val", "continue")] () ]
, mknode "w:p" [] [mknode "w:pPr" [] ()]]
OOXMLCell _attr align rowspan (ColSpan colspan) contents -> do
-- we handle rowspans via 'leftpad', so we can ignore those here
compactStyle <- pStyleM "Compact"
es <- withParaProp (alignmentFor align) $ blocksToOpenXML contents
-- Table cells require a <w:p> element, even an empty one!
-- Not in the spec but in Word 2007, 2010. See #4953. And
-- apparently the last element must be a <w:p>, see #6983.
return . mknode "w:tc" [] $
Elem
(mknode "w:tcPr" [] ([ mknode "w:gridSpan" [("w:val", tshow colspan)] ()
| colspan > 1] ++
[ mknode "w:vMerge" [("w:val", "restart")] ()
| rowspan > RowSpan 1 ])) :
if null contents
then [Elem $ mknode "w:p" [] [mknode "w:pPr" [] [compactStyle]]]
else case reverse (onlyElems es) of
b:e:_ | qName (elName b) == "bookmarkEnd" -- y tho?
, qName (elName e) == "p" -> es
e:_ | qName (elName e) == "p" -> es
_ -> es ++ [Elem $ mknode "w:p" [] ()]
alignmentFor :: Alignment -> Element
alignmentFor al = mknode "w:jc" [("w:val",alignmentToString al)] ()
|
