{-# 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
let (Grid.Table _attr caption colspecs _rowheads thead tbodies tfoot) =
gridTable
let (Caption _maybeShortCaption captionBlocks) = caption
let captionStr = stringify captionBlocks
let aligns = map fst $ elems colspecs
captionXml <- if null captionBlocks
then return []
else withParaPropM (pStyleM "Table Caption")
$ blocksToOpenXML captionBlocks
-- We set "in table" after processing the caption, because we don't
-- want the "Table Caption" style to be overwritten with "Compact".
modify $ \s -> s { stInTable = True }
head' <- cellGridToOpenXML blocksToOpenXML HeadRow aligns thead
bodies <- mapM (cellGridToOpenXML blocksToOpenXML BodyRow aligns) tbodies
foot' <- cellGridToOpenXML blocksToOpenXML FootRow aligns tfoot
let hasHeader = not . null . indices . partRowAttrs $ thead
let hasFooter = not . null . indices . partRowAttrs $ tfoot
-- 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",if hasFooter then "1" else "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]
-- | Parts of a table
data RowType = HeadRow | BodyRow | FootRow
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])
-> RowType
-> [Alignment]
-> Part
-> WS m [Element]
cellGridToOpenXML blocksToOpenXML rowType aligns part@(Part _ cellArray _) =
if null (elems cellArray)
then return mempty
else mapM (rowToOpenXML blocksToOpenXML) $
partToRows rowType aligns part
data OOXMLCell
= OOXMLCell Attr Alignment RowSpan ColSpan [Block]
| OOXMLCellMerge ColSpan
data OOXMLRow = OOXMLRow RowType Attr [OOXMLCell]
partToRows :: RowType -> [Alignment] -> Part -> [OOXMLRow]
partToRows rowType aligns part =
let
toOOXMLCell :: Alignment -> RowIndex -> ColIndex -> GridCell -> [OOXMLCell]
toOOXMLCell columnAlign ridx cidx = \case
ContentCell attr align rowspan colspan blocks ->
-- Respect non-default, cell specific alignment.
let align' = case align of
AlignDefault -> columnAlign
_ -> align
in [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 rowType attr
. mconcat
. zipWith (\align -> uncurry $ toOOXMLCell align ridx)
aligns
. 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 rowType _attr cells) = do
xmlcells <- mapM (ooxmlCellToOpenXML blocksToOpenXML) cells
let addTrPr = case rowType of
HeadRow -> (mknode "w:trPr" []
[mknode "w:tblHeader" [("w:val", "true")] ()] :)
BodyRow -> id
FootRow -> id
return $ mknode "w:tr" [] (addTrPr 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
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)] ()