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Re: Is there any way to make alternate rows of a table have a light gray
Re: Is there any way to make alternate rows of a table have a light gray background?
Sun, 21 Nov 2021 08:05:35 -0600
I have corrected all of the issues. See the attached.
On Sat, Nov 20, 2021 at 2:30 PM Blake McBride <firstname.lastname@example.org> wrote:
> Hi Tadziu,
> Using the code you so graciously supplied, I am having a problem. The
> problem occurs when your table spans pages. Since you are creating the
> gray line _after_ the current line, sometimes you get an extra gray line on
> the first page, and other times you get a double gray line on the second
> See the attached example. I am running it with: groff -t -mm -Tpdf
> test.groff >test.pdf
> In it, you can see an extra gray line at the end of the first page. If
> you change the top margin to .5i from 1i, you get a double gray line on the
> second page instead.
> I think all of this is caused by the creation of the gray box _after_ the
> current line. In my case, I always produce PDF files and the lines are
> always the same height.
> If there is a way to affect the current line rather than the "next" line,
> I think the problem would go away. I am not good enough with groff escape
> sequences to easily do this. Could you please help me with this? I would
> really appreciate it!
> Thank you!
> Blake McBride
> On Wed, Jun 9, 2021 at 7:31 AM Tadziu Hoffmann <
> email@example.com> wrote:
>> > The data is simple, but the table is wide and the data
>> > occurs in a right triangle shape, with one point at the
>> > top left, another point at the top right, and the other
>> > point at the bottom right. This means that it is hard to
>> > accurately follow from the row heading on the left to the
>> > appropriate column on the right.
>> > Is there any way to make alternate rows of a table have a
>> > light gray background?
>> It is possible only with some trickery, and it's easier
>> if all the lines have the same height, otherwise much more
>> manual intervention will be necessary. To make this fully
>> automatic will probably require modifying tbl.
>> In the attached example, the gray background is created by
>> drawing filled boxes across the width of the table. In fact,
>> the background is drawn in advance for the *next* line, in
>> order to prevent the horizontal line from being painted over,
>> which can happen at low resolutions; however, this requires
>> two slightly different versions of the fill because the line
>> spacing is different around the horizontal line.
>> TW is the width of the table and is set by tbl. LW is a
>> correction for (half) the line width and is only necessary
>> because I'm using square linecaps.
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