ConTeXt 中的不连续表规则

Question

如何设置具有不连续水平线的表格？作为示例，我使用了另一个答案中的表格：

我的表格仍然缺少中断规则。另一件事是“Total”上方的规则。使用当前设置，\setupTABLE[row][9][bottomframe=on]规则太短。\setupTABLE[row][last][topframe=on]设置后，规则的粗细从 0.03em 变为 0.08em。如何修复这两个规则？

\startsetups table
  \setupTABLE [frame=off, rulethickness=.03em]

  % vertical alignment
  \setupTABLE [column]         [align=lohi]

  % column spacing
  \setupTABLE [column] [each]  [loffset=.5ex, roffset=.5ex]
  \setupTABLE [column] [first] [loffset=0mm]
  \setupTABLE [column] [last]  [roffset=0mm]

  % rules
  \setupTABLE [row]    [first] [topframe=on, rulethickness=.08em]
  \setupTABLE [row]    [2]     [topframe=on]
  \setupTABLE [row]    [last]  [bottomframe=on, rulethickness=.08em]

  \setupTABLE [row]    [6]     [topframe=on]
  \setupTABLE [row]    [last]  [align=middle]

  % wrong rule width (too short)
  \setupTABLE [row] [9] [bottomframe=on]

  % wrong rule thickness (should be .03em, but draws .8em)
  %\setupTABLE [row] [last] [topframe=on] % wrong rule thickness
\stopsetups

\starttext
\bTABLE [setups=table]
  \bTR\bTH Part \eTH\bTH Problem \eTH\bTH Score \eTH\bTH Sum \eTH\eTR

  % first part
  \bTR\bTD[nr=4] 1 \eTD\bTD 1a \eTD\bTD 2 \eTD\bTD[nr=4] 7 \eTD\eTR
  \bTR                 \bTD 2b \eTD\bTD 2 \eTD                 \eTR
  \bTR                 \bTD 3a \eTD\bTD 1 \eTD                 \eTR
  \bTR                 \bTD 5b \eTD\bTD 2 \eTD                 \eTR

  % second part
  \bTR\bTD[nr=4] 2 \eTD\bTD 6a \eTD\bTD 2 \eTD\bTD[nr=4] 7 \eTD\eTR
  \bTR                 \bTD 6b \eTD\bTD 2 \eTD                 \eTR
  \bTR                 \bTD 7a \eTD\bTD 1 \eTD                 \eTR
  \bTR                 \bTD 8b \eTD\bTD 2 \eTD                 \eTR

  % total
  \bTR\bTD[nc=3] Total                    \eTD\bTD 14      \eTD\eTR
\eTABLE
\stoptext

Answer 1

划掉最后一行

当你使用

\setupTABLE [row] [9] [bottomframe=on]

该规则只在中间单元格中延伸，因为内部第一个和最后一个单元格不属于第 9 行。从视觉上讲，您可以使用以下方法获得覆盖整行的规则：

\setupTABLE [row] [9] [bottomframe=on]
\setupTABLE [first,last]   [6] [bottomframe=on]

现在，当你使用

\setupTABLE [row] [last] [topframe=on]

你得到 0.08em 的规则，因为之前你有

\setupTABLE [row]    [last]  [bottomframe=on, rulethickness=.08em]

因此规则厚度设置为 0.08em。获取不同厚度的顶部和底部规则的唯一方法是使用 metapost ( background=....)，或使用自定义框架渲染。我展示的是后者，因为我假设您已经知道如何使用自定义背景。

\unprotect
\startuniqueMPgraphic {top_frame}
  draw topboundary OverlayBox 
    withpen pensquare scaled (\the\dimexpr\framedparameter{\c!top\c!rulethickness}\relax) 
    withcolor \MPcolor{\framedparameter{\c!top\c!framecolor}} ;

  setbounds currentpicture to OverlayBox ;
\stopuniqueMPgraphic

% Typo in pack-fen.mkiv
\let\setinstalledframedimensions\pack_framed_overlay_initialize_indeed

\installtopframerenderer{custom}{\uniqueMPgraphic{top_frame}}

\setupframed
  [
    \c!top\c!rulethickness=\framedparameter\c!rulethickness,
    \c!top\c!framecolor=\framedparameter\c!framecolor,
  ]
\protect

然后使用

\setupTABLE [row]    [last]  [topframe=custom, toprulethickness=0.03em]

您还可以为左、右和底部框架定义类似的自定义框架。

不连续规则

您还可以定义自定义围栏以具有较短的顶部边框：

\startuniqueMPgraphic {tight_top_frame}
  draw (2*\the\dimexpr\framedparameter\c!loffset,OverlayHeight) -- (OverlayWidth - 2*\the\dimexpr\framedparameter\c!roffset, OverlayHeight)
    withpen pensquare scaled \overlaylinewidth
    withcolor \MPcolor{\overlaylinecolor} ;

  setbounds currentpicture to OverlayBox ;
\stopuniqueMPgraphic
\installtopframerenderer{tight}{\uniqueMPgraphic{tight_top_frame}}

（我不确定为什么我需要将loffset和roffset乘以 2。）然后使用

\setupTABLE [row]    [2]     [topframe=tight]

综合以上所有，我们得到：

\unprotect
\startuniqueMPgraphic {top_frame}
  draw topboundary OverlayBox 
    withpen pensquare scaled (\the\dimexpr\framedparameter{\c!top\c!rulethickness}\relax) 
    withcolor \MPcolor{\framedparameter{\c!top\c!framecolor}} ;

  setbounds currentpicture to OverlayBox ;
\stopuniqueMPgraphic

\startuniqueMPgraphic {tight_top_frame}
  draw (2*\the\dimexpr\framedparameter\c!loffset,OverlayHeight) -- (OverlayWidth - 2*\the\dimexpr\framedparameter\c!roffset, OverlayHeight)
    withpen pensquare scaled \overlaylinewidth
    withcolor \MPcolor{\overlaylinecolor} ;

  setbounds currentpicture to OverlayBox ;
\stopuniqueMPgraphic

% Typo in pack-fen.mkiv
\let\setinstalledframedimensions\pack_framed_overlay_initialize_indeed

\installtopframerenderer{custom}{\uniqueMPgraphic{top_frame}}
\installtopframerenderer{tight}{\uniqueMPgraphic{tight_top_frame}}

\setupframed
  [
    \c!top\c!rulethickness=\framedparameter\c!rulethickness,
    \c!top\c!framecolor=\framedparameter\c!framecolor,
  ]
\protect

使用表格设置：

\startsetups table
  \setupTABLE [frame=off, rulethickness=.03em]

  % vertical alignment
  \setupTABLE [column]         [align=lohi]

  % column spacing
  \setupTABLE [column] [each]  [loffset=.5ex, roffset=.5ex]
  \setupTABLE [column] [first] [loffset=0mm]
  \setupTABLE [column] [last]  [roffset=0mm]

  % rules
  \setupTABLE [row]    [first] [topframe=on, rulethickness=.08em]
  \setupTABLE [row]    [2]     [topframe=tight]
  \setupTABLE [row]    [last]  [bottomframe=on, rulethickness=.08em]

  \setupTABLE [row]    [6]     [topframe=on]
  \setupTABLE [row]    [last]  [align=middle]

  \setupTABLE [row]    [last]  [topframe=custom, toprulethickness=0.03em]


\stopsetups

这使：