let width specifications in niceTables be numbers from (0,1]

[Alex-Jordan]

niceTables allows width specification for columns or cells using the LaTeX column type p{width}. With this PR, width can now be a decimal from 0 (exclusive) to 1 (inclusive). This is understood to be a portion of the available width.

• In HTML, something like 40% should appear in CSS.
• In TeX, something like 0.4\linewidth should appear in appropriate places.
• In PTX, something like 40% should appear in either
  • a col's width attribute (for a DataTable)
  • or an sbsgroup's widths attribute (for a LayoutTable).

Note that PTX has no way to specify a width for an individual cell.

You can try with this test file:

DOCUMENT();

loadMacros(qw(PGstandard.pl PGML.pl PGcourse.pl));

BEGIN_PGML

[#
	[. This table should have a 40% width column, an unspecified column, and a 1-inch column. .]
	[. This table should have a 40% width column, an unspecified column, and a 1-inch column. .]
	[. This table should have a 40% width column, an unspecified column, and a 1-inch column. .]
#]{padding => [0,1], align => 'p{0.4}lp{1in}'}

----

[#
	[. This table should have a 40% width cell, an unspecified cell, and a 1-inch column. .]{halign => 'p{0.4}'}
	[. This table should have a 40% width cell, an unspecified cell, and a 1-inch column. .]
	[. This table should have a 40% width cell, an unspecified cell, and a 1-inch column. .]{halign => 'p{1in}'}
#]{padding => [0,1]}

----

[#
	[. This table should have a 40% width column, an unspecified column, and a 1-inch column. And then overrided by a 50% cell, a 1in cell, and a 20% cell .]{halign => 'p{0.5}'}
	[. This table should have a 40% width column, an unspecified column, and a 1-inch column. And then overrided by a 50% cell, a 1in cell, and a 20% cell .]{halign => 'p{1in}'}
	[. This table should have a 40% width column, an unspecified column, and a 1-inch column. And then overrided by a 50% cell, a 1in cell, and a 20% cell .]{halign => 'p{0.2}'}
#]{padding => [0,1], align => 'p{0.4}lp{1in}', center => 0}

----
# Layout Table

[#
	[. This table should have a 40% width column, an unspecified column, and a 30% column. .]
	[. This table should have a 40% width column, an unspecified column, and a 30% column. .]
	[. This table should have a 40% width column, an unspecified column, and a 30% column. .]
#]*{padding => [0,1], align => 'p{0.4}lp{0.3}', center => 0}

END_PGML

ENDDOCUMENT();

[Alex-Jordan]

To test this, you should load a problem (perhaps the one posted here) in the editor. And then examine the output for MathJax, TeX, and PTX. With the latter two, you can see directly where the width specifications are. With MathJax, you can use the inspector to make sure things are what they are supposed to be.

[drgrice1]

The last case in your example (the layout table) does not seem to be working. I see that the style for the first cell has "width: 0.4". 0.4 is an invalid value for width.

[Alex-Jordan]

Hmm, I see it as 40%.

This was the last things I fixed. So I thought for a second maybe I hadn't pushed this, but the commit hash here is b23bc05 and that matches what I have. Since this was the last thing, is there any chance you have the previous version before my last force push late last night?

[drgrice1]

Heh! It seems I just tested your sample problem with the PG-2.19 branch, and forgot to even check out your branch. That was dumb.

[drgrice1]

Looks good. Everything seems to work as claimed.

[Alex-Jordan]

I changed one more thing here that will only affect PTX output. First, I reviewed the actual definitions of lengths in TeX, and redefined the conversion from one unit to another based on those actual TeX definitions. And the conversion is all to pt instead of cm, since that is the more fundamental unit in TeX.

And that is also good because the default line with for a PTX document is 340pt. So it helps clarify how to translate an absolute width (which PTX disallows) to a percent width.