On 12/10/2008 4:05 AM, Wolfgang Schuster wrote:
> On Wed, Dec 10, 2008 at 7:07 AM, Lars Huttar <[EMAIL PROTECTED]> wrote:
...
>> However, when I try to mix double frames with single frames, I'm having
>> trouble. Here is what I tried, in order to get a cell with double frame
>> on the left, and single frame everywhere else:
>>
>> \startuseMPgraphic{table:frame:Lrtb} % left border is double
>> draw leftboundary OverlayBox enlarged \the\dimexpr\linewidth*1\relax ; %
>> outer frame
>> draw leftboundary OverlayBox enlarged -\the\dimexpr\linewidth*2\relax ;
>> % inner frame
>> draw rightboundary OverlayBox enlarged -\the\dimexpr\linewidth/2\relax ;
>> draw topboundary OverlayBox enlarged -\the\dimexpr\linewidth/2\relax ;
>> draw bottomboundary OverlayBox enlarged -\the\dimexpr\linewidth/2\relax ;
>> setbounds currentpicture to OverlayBox ;
>> \stopuseMPgraphic
>>
>> Now the graphic has double line on the left and a single line elsewhere.
>> However, the lines are thicker than in the previous one... about twice
>> as thick, too heavy for our requirements. And I can't tell why. This is
>> true on all four sides.
>> See http://www.huttar.net/lars-kathy/tmp/test-mp-tableframe.pdf, second
>> table.
>>
>> Also, on the side that has double lines, the double lines don't go all
>> the way to the top and bottom (see same pdf, second table), so that the
>> double line is not continuous across multiple rows.
>>
>> Any suggestions?
>>
>> The above graphic is used as follows...
>> \start
>> \setupTABLE[c][first][background={table:frame:Lrtb}]
>> \getbuffer
>> \stop
>
> \startuseMPgraphic{table:frame:all}
> draw OverlayBox enlarged -0.2 ;
> setbounds currentpicture to OverlayBox ;
> \stopuseMPgraphic
>
> \startuseMPgraphic{table:frame:leftdouble}
> draw OverlayBox leftenlarged 2 topenlarged -0.2 bottomenlarged -0.2
> rightenlarged -0.2 ;
> setbounds currentpicture to OverlayBox ;
> \stopuseMPgraphic
>
> \defineoverlay[table:frame:all][\useMPgraphic{table:frame:all}]
> \defineoverlay[table:frame:leftdouble][\useMPgraphic{table:frame:leftdouble}]
>
> \starttext
>
> \startbuffer
> \bTABLE[frame=off,offset=2ex]
> \bTR
> \bTD One \eTD
> \bTD Two \eTD
> \bTD Three \eTD
> \eTR
> \bTR
> \bTD Four \eTD
> \bTD Five \eTD
> \bTD Six \eTD
> \eTR
> \bTR
> \bTD Seven \eTD
> \bTD Eight \eTD
> \bTD Nine \eTD
> \eTR
> \eTABLE
> \stopbuffer
>
> \start
> \setupTABLE[background={table:frame:all}]
> \setupTABLE[c][first][background={table:frame:all,table:frame:leftdouble}]
> \getbuffer
> \stop
>
> \stoptext
>
> Wolfgang
>
This fixes the problems I mentioned in my previous email. Thanks again
for that!
Unfortunately, when I generalize it, it takes us back to producing
triple borders between adjacent cells. I think this is inevitable when
overlaying a double frame (for certain sides) on top of a single frame
for all sides, because a double side overlaid on a single side cannot be
centered (or else the single line shows through separately from the
double line).
So my fix... which I'm posting here in hopes that someone may refine it,
and for the benefit of others who may attempt similar things... is to
center the double frames between the cells and avoid overlaying a double
frame side over a single frame side.
We center borders between the cells by using "enlarged" values -0.2 +/-
k, i.e. center around -0.2. I'm not sure why -0.2 works better than
zero, but it does... Doing this makes coincident border lines from
adjacent cells look like ordinary single lines instead of being extra
thick. We settled on k = 0.6 to get the desired distance between our
double lines. Incidentally, I wish I knew how to put -0.2, 0.2-k, and
-0.2+k into variables or something so that they could all be changed in
one place, instead of hard-coded in many places. Maybe somebody can help
me there.
A cost of this single-overlay-per-cell approach is that we have to
specify individually the 16 possible overlays (combinations of single
and double edges) for any possible cell. But that's not too bad, as we
only have to define them once. (In practice, we also had to define a
couple of special cases where we needed some cells with open edges for a
"faked rowspan". We haven't completely got those working yet.)
An unexpected and potentially large benefit of this approach is that for
each cell, we only generate one MPgraphic (apparently because we only
use one overlay per cell), which should make the TeX run much faster,
and avoid running over the maxnumMPgraphics limit. With the
multiple-overlay-per-cell approach, we ended up using about 13,000
MPgraphics for our document, far beyond the default limit of 4000, and
taking 15 minutes to run compared to 37 seconds for a similar document
without the tables.
Here is our working system... hope it's helpful to somebody:
%%%% define MPgraphics for double-ruled tables
% Lars Huttar, 2008-12-09
% Thanks to Wolfgang Schuster on NTG-list
% Each MPgraph (and overlay) is named lrtb, with capitalized letters
indicating which sides are double-ruled.
% Adjacent cells must not define their common side differently, e.g. one
cell define it single and one side
% define it double; if that happens, it will appear triple (or a
triple-thick line).
% 0 double sides
\startuseMPgraphic{table:frame:lrtb} % all single
draw OverlayBox enlarged -0.2 ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
% 1 double side
\startuseMPgraphic{table:frame:Lrtb} % left double
draw OverlayBox leftenlarged 0.4 topenlarged -0.2 bottomenlarged -0.2
rightenlarged -0.2 ;
draw OverlayBox leftenlarged -0.8 topenlarged -0.2 bottomenlarged -0.2
rightenlarged -0.2 ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
\startuseMPgraphic{table:frame:lRtb} % right double
draw OverlayBox leftenlarged -0.2 topenlarged -0.2 bottomenlarged -0.2
rightenlarged -0.8 ;
draw OverlayBox leftenlarged -0.2 topenlarged -0.2 bottomenlarged -0.2
rightenlarged 0.4 ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
\startuseMPgraphic{table:frame:lrTb} % top double
draw OverlayBox leftenlarged -0.2 topenlarged 0.4 bottomenlarged -0.2
rightenlarged -0.2 ;
draw OverlayBox leftenlarged -0.2 topenlarged -0.8 bottomenlarged -0.2
rightenlarged -0.2 ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
\startuseMPgraphic{table:frame:lrtB} % bottom double
draw OverlayBox leftenlarged -0.2 topenlarged -0.2 bottomenlarged 0.4
rightenlarged -0.2 ;
draw OverlayBox leftenlarged -0.2 topenlarged -0.2 bottomenlarged -0.8
rightenlarged -0.2 ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
% 2 double sides: adjacent
\startuseMPgraphic{table:frame:LrTb} % left, top double
draw OverlayBox leftenlarged -0.8 topenlarged -0.8 bottomenlarged -0.2
rightenlarged -0.2 ;
draw OverlayBox leftenlarged 0.4 topenlarged 0.4 bottomenlarged -0.2
rightenlarged -0.2 ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
\startuseMPgraphic{table:frame:lRTb} % right, top double
draw OverlayBox leftenlarged -0.2 topenlarged -0.8 bottomenlarged -0.2
rightenlarged -0.8 ;
draw OverlayBox leftenlarged -0.2 topenlarged 0.4 bottomenlarged -0.2
rightenlarged 0.4 ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
\startuseMPgraphic{table:frame:LrtB} % left, bottom double
draw OverlayBox leftenlarged -0.8 topenlarged -0.2 bottomenlarged -0.8
rightenlarged -0.2 ;
draw OverlayBox leftenlarged 0.4 topenlarged -0.2 bottomenlarged 0.4
rightenlarged -0.2 ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
\startuseMPgraphic{table:frame:lRtB} % right, bottom double
draw OverlayBox leftenlarged -0.2 topenlarged -0.2 bottomenlarged -0.8
rightenlarged -0.8 ;
draw OverlayBox leftenlarged -0.2 topenlarged -0.2 bottomenlarged 0.4
rightenlarged 0.4 ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
% 2 double sides: opposite
\startuseMPgraphic{table:frame:LRtb} % left, right double
draw OverlayBox leftenlarged -0.8 topenlarged -0.2 bottomenlarged -0.2
rightenlarged -0.8 ;
draw OverlayBox leftenlarged 0.4 topenlarged -0.2 bottomenlarged -0.2
rightenlarged 0.4 ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
\startuseMPgraphic{table:frame:lrTB} % top, bottom double
draw OverlayBox leftenlarged -0.2 topenlarged -0.8 bottomenlarged -0.8
rightenlarged -0.2 ;
draw OverlayBox leftenlarged -0.2 topenlarged 0.4 bottomenlarged 0.4
rightenlarged -0.2 ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
% 3 double sides
\startuseMPgraphic{table:frame:LRTb} % left, top, right double
draw OverlayBox leftenlarged -0.8 topenlarged -0.8 bottomenlarged -0.2
rightenlarged -0.8 ;
draw OverlayBox leftenlarged 0.4 topenlarged 0.4 bottomenlarged -0.2
rightenlarged 0.4 ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
\startuseMPgraphic{table:frame:LRtB} % left, bottom, right double
draw OverlayBox leftenlarged -0.8 topenlarged -0.2 bottomenlarged -0.8
rightenlarged -0.8 ;
draw OverlayBox leftenlarged 0.4 topenlarged -0.2 bottomenlarged 0.4
rightenlarged 0.4 ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
\startuseMPgraphic{table:frame:LrTB} % left, top, bottom double
draw OverlayBox leftenlarged -0.8 topenlarged -0.8 bottomenlarged -0.8
rightenlarged -0.2 ;
draw OverlayBox leftenlarged 0.4 topenlarged 0.4 bottomenlarged 0.4
rightenlarged -0.2 ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
\startuseMPgraphic{table:frame:lRTB} % right, top, bottom double
draw OverlayBox leftenlarged -0.2 topenlarged -0.8 bottomenlarged -0.8
rightenlarged -0.8 ;
draw OverlayBox leftenlarged -0.2 topenlarged 0.4 bottomenlarged 0.4
rightenlarged 0.4 ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
% 4 double sides
\startuseMPgraphic{table:frame:LRTB} % all double
draw OverlayBox enlarged 0.4 ;
draw OverlayBox enlarged -0.8 ;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
% Special cases for 'fake' rowspans: three double sides and one open side
% Note that these do not look quite right: the borders are too thick
\startuseMPgraphic{table:frame:LRTO} % left, right, top double; bottom open
% draw OverlayBox leftenlarged -0.8 topenlarged -0.8 bottomenlarged 0.0
rightenlarged -0.8 ;
% draw OverlayBox leftenlarged 0.4 topenlarged 0.4 bottomenlarged 0.0
rightenlarged 0.4 ;
draw leftboundary OverlayBox enlarged 0.4;
draw rightboundary OverlayBox enlarged 0.4 ;
draw topboundary OverlayBox enlarged 0.4;
draw leftboundary OverlayBox enlarged -0.8;
draw rightboundary OverlayBox enlarged -0.8 ;
draw topboundary OverlayBox enlarged -0.8;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
\startuseMPgraphic{table:frame:LROB} % left, right, bottom double; top open
% draw OverlayBox leftenlarged -0.8 topenlarged 0.0 bottomenlarged -0.8
rightenlarged -0.8 ;
% draw OverlayBox leftenlarged 0.4 topenlarged 0.0 bottomenlarged 0.4
rightenlarged 0.4 ;
draw leftboundary OverlayBox enlarged 0.4;
draw rightboundary OverlayBox enlarged 0.4 ;
draw bottomboundary OverlayBox enlarged 0.4;
draw leftboundary OverlayBox enlarged -0.8;
draw rightboundary OverlayBox enlarged -0.8 ;
draw bottomboundary OverlayBox enlarged -0.8;
setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic
%%%%% define overlays %%%%%
% 0 double sides
\defineoverlay[lrtb][\useMPgraphic{table:frame:lrtb}]
% 1 double side
\defineoverlay[Lrtb][\useMPgraphic{table:frame:Lrtb}]
\defineoverlay[lRtb][\useMPgraphic{table:frame:lRtb}]
\defineoverlay[lrTb][\useMPgraphic{table:frame:lrTb}]
\defineoverlay[lrtB][\useMPgraphic{table:frame:lrtB}]
% 2 double sides: adjacent
\defineoverlay[LrTb][\useMPgraphic{table:frame:LrTb}]
\defineoverlay[lRTb][\useMPgraphic{table:frame:lRTb}]
\defineoverlay[LrtB][\useMPgraphic{table:frame:LrtB}]
\defineoverlay[lRtB][\useMPgraphic{table:frame:lRtB}]
% 2 double sides: opposite
\defineoverlay[LRtb][\useMPgraphic{table:frame:LRtb}]
\defineoverlay[lrTB][\useMPgraphic{table:frame:lrTB}]
% 3 double sides
\defineoverlay[LRTb][\useMPgraphic{table:frame:LRTb}]
\defineoverlay[LRtB][\useMPgraphic{table:frame:LRtB}]
\defineoverlay[lRTB][\useMPgraphic{table:frame:lRTB}]
\defineoverlay[LrTB][\useMPgraphic{table:frame:LrTB}]
% 4 double sides
\defineoverlay[LRTB][\useMPgraphic{table:frame:LRTB}]
% Special cases for 'fake' rowspans
\defineoverlay[LRTO][\useMPgraphic{table:frame:LRTO}]
\defineoverlay[LROB][\useMPgraphic{table:frame:LROB}]
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