About 'repeat' option of \startitemize

About 'repeat' option of \startitemize

[Radhelorn]

Hello All!
A while ago Hans introduced 'repeat' option for \startitemize to make 
nested items. I've decided to give it a try:

\startitemize[repeat]
\item item1
   \startitemize
   \item item1.1
   \item item1.2
   \item item1.3
   \stopitemize
\item
   \startitemize
   \item item2.1
   \item item2.2
   \item item2.3
   \item item2.4
   \stopitemize
\stopitemize

gives:

1.  item1
   1.   item1.1
2.2.   item1.2
3.3.   item1.3
2.1.   item2.1
2.2.   item2.2
3.3.   item2.3
4.4.   item2.4

should:

1.  item1
1.1.   item1.1
1.2.   item1.2
1.3.   item1.3
2.1.   item2.1
2.2.   item2.2
2.3.   item2.3
2.4.   item2.4

 From my observations of mysterious box manipulations in core-itm I 
think that fix for repeating first digit can be as simple as removing 
one of these \plusone's somewhere. But it is possible to make both 1.1 
and 2.1 work as in my example?

And it seems that space after dot in nested lists is slightly bigger. Is 
this intentional?

-- 
Radhelorn <radhelorn@mail.ru>

Re: About 'repeat' option of \startitemize

[Hans Hagen]

Radhelorn wrote:

> Hello All!
> A while ago Hans introduced 'repeat' option for \startitemize to make 
> nested items. I've decided to give it a try:

next time give it a try when i just made it; it took some time to figure 
out what was wrong (rather tricky code)

\unprotect

\def\checkforrepeatedlistitem
  {\ifnum\itemlevel=\plusone
     \initializeboxstack{item}%
   \fi
   \ifconditional\repeatlistitem
      \savebox{item}{\itemlevel}{\hbox{\copy8}}%
      \setbox8\hbox to \wd8
       {\setbox\scratchbox\hbox
          {\scratchcounter\itemlevel
           \advance\scratchcounter\minusone
           \dorecurse\scratchcounter{\foundbox{item}{\recurselevel}}}%
        \ifnum\itemlevel>\plusone
          \ifdim\wd\scratchbox>\zeropoint
            \hskip-\dimen2
            \box\scratchbox
          \fi
        \fi
        \box8 }%
   \fi}

\showframe

\starttext

\startbuffer
\item
  \startitemize[n]
  \item item 1.1
  \item item 1.2
      \startitemize[n]
      \item item 1.2.1
      \item item 1.2.2
      \stopitemize
  \item item 1.3
  \stopitemize
\item
  \startitemize[n]
  \item item 2.1
  \item item 2.2
  \stopitemize
\item item 3
  \startitemize[n]
  \item item 3.1
  \item item 3.2
  \stopitemize
\item
  \startitemize[n]
  \item item 4.1
  \item item 4.2
  \stopitemize
\stopbuffer

\startitemize[n,repeat,6*broad,packed]
\getbuffer
\stopitemize
\blank[3*big]
\startitemize[n,repeat,packed]
\getbuffer
\stopitemize
\blank[3*big]
\setupitemize[each][atmargin][width=3em]
\startitemize[n,repeat,packed]
\getbuffer
\stopitemize

\stoptext

Re: About 'repeat' option of \startitemize

[Radhelorn]

Hans Hagen wrote:
> Radhelorn wrote:
> 
>> Hello All!
>> A while ago Hans introduced 'repeat' option for \startitemize to make 
>> nested items. I've decided to give it a try:
> 
> 
> next time give it a try when i just made it; it took some time to figure 
> out what was wrong (rather tricky code)
>

Thanks! Soon you will be fixing bugs even earlier than we will be 
noticing them!

But there is another problem. When using itemize without repeat option 
indentation is right, but with this option indentation (both before 
number and after number) of nested items is different for different levels:

1. item
1.1    item
    1.2.1  item
       1.2.1.1.item
           1.2.2.1em

Something needs to be done with this, but I'm afraid that this will 
complicate macros even more.


-- 
Radhelorn <radhelorn@mail.ru>

Re: About 'repeat' option of \startitemize

[Hans Hagen]

Radhelorn wrote:

> Hans Hagen wrote:
>
>> Radhelorn wrote:
>>
>>> Hello All!
>>> A while ago Hans introduced 'repeat' option for \startitemize to 
>>> make nested items. I've decided to give it a try:
>>
>>
>>
>> next time give it a try when i just made it; it took some time to 
>> figure out what was wrong (rather tricky code)
>>
>
> Thanks! Soon you will be fixing bugs even earlier than we will be 
> noticing them!
>
> But there is another problem. When using itemize without repeat option 
> indentation is right, but with this option indentation (both before 
> number and after number) of nested items is different for different 
> levels:
>
> 1. item
> 1.1    item
>    1.2.1  item
>       1.2.1.1.item
>           1.2.2.1em
>
for that you can best set up a dedicated instance of itemize 
(defineitemgroup) and assign the right widths to the levels

Hans

Re: About 'repeat' option of \startitemize

[Radhelorn]

Hans Hagen wrote:
>> Radhelorn wrote:
>>
>> 1. item
>> 1.1    item
>>    1.2.1  item
>>       1.2.1.1.item
>>           1.2.2.1em
>>
> for that you can best set up a dedicated instance of itemize 
> (defineitemgroup) and assign the right widths to the levels
> 
I'm sorry to disturb you with my endless requests but it seems that 
options of itemgroups is not interact properly.

I've tried as you suggested this way:

\defineitemgroup[myitemize]
\setupitemgroup[myitemize][n,width=4em]

\startmyitemize
\item item 1
\item item 2
\stopmyitemize

It gives many "missing or ungrouped '=' after 'n'" messages and changes 
item symbol to default dot. I've also tried n=1 or n=2 (seen in the 
sources). This gives same result, but without error message.

Thanks for your patience.

-- 
Radhelorn <radhelorn@mail.ru>

Re: About 'repeat' option of \startitemize

[Hans Hagen]

Radhelorn wrote:

> Hans Hagen wrote:
>
>>> Radhelorn wrote:
>>>
>>> 1. item
>>> 1.1    item
>>>    1.2.1  item
>>>       1.2.1.1.item
>>>           1.2.2.1em
>>>
>> for that you can best set up a dedicated instance of itemize 
>> (defineitemgroup) and assign the right widths to the levels
>>
> I'm sorry to disturb you with my endless requests but it seems that 
> options of itemgroups is not interact properly.
>
> I've tried as you suggested this way:
>
> \defineitemgroup[myitemize]
> \setupitemgroup[myitemize][n,width=4em]

\setupitemgroup[myitemize][each][width=4em]
\setupitemgroup[myitemize][each][n]


>
> \startmyitemize
> \item item 1
> \item item 2
> \stopmyitemize
>
> It gives many "missing or ungrouped '=' after 'n'" messages and 
> changes item symbol to default dot. I've also tried n=1 or n=2 (seen 
> in the sources). This gives same result, but without error message.
>
> Thanks for your patience.
>

Re: About 'repeat' option of \startitemize

[Radhelorn]

Hans Hagen wrote:
>>
>> \defineitemgroup[myitemize]
>> \setupitemgroup[myitemize][n,width=4em]
> 
> 
> \setupitemgroup[myitemize][each][width=4em]
> \setupitemgroup[myitemize][each][n]
> 
> 

Thanks. This will do for a time. Actually I have another observation in 
behaviour of 'repeat' option but will try to experiment with this a 
little more. This itm module is too elaborate.

-- 
Radhelorn <radhelorn@mail.ru>

Re: About 'repeat' option of \startitemize

[Radhelorn]

[-- Attachment #1: Type: text/plain, Size: 285 bytes --]

Radhelorn wrote:
> I have another observation in 
> behaviour of 'repeat' option but will try to experiment with this a 
> little more. This itm module is too elaborate.
> 

After Taco's t-itmfix I've came up with my own little fix. Please observe.


-- 
Radhelorn <radhelorn@mail.ru>

[-- Attachment #2: rptfix.tex --]
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\def\dolistitem % evt aantal items opslaan per niveau, scheelt zoeken
  {\ifconditional\textlistitem
    % begin of item
   \else
      \par
   \fi
%    \ignorespaces
   \increment\noflistelements
   \ifnum\itemcolumndepth=\zerocount \ifconditional\optimizelistitem
     \ifnum\noflistelements=\plusone        % tgv bv kolommen/nesting
       \findtwopassdata\s!list{\noflists:}% % wordt soms de volgorde
     \fi                                    % verstoord, vandaar \find
     \iftwopassdatafound
       \ifcase0\twopassdata\relax \twopassdatafoundfalse \fi
     \fi
     \iftwopassdatafound
       \ifnum\twopassdata=3
         \ifnum\noflistelements>1
           \doitembreak\itemnobreak
         \fi
       \else\ifnum\twopassdata>3
         \ifnum\noflistelements=2
           \ifconditional\introlistitem
             \doitembreak\nobreak
           \else
             \doitembreak\itemnobreak
           \fi
         \else\ifnum\twopassdata=\noflistelements\relax
           \doitembreak\itemnobreak
        \else\ifnum\noflistelements>2
           \doitembreak\itembreak
         \else
           \ifconditional\introlistitem\else\doitembreak\itembreak\fi
         \fi\fi\fi
       \fi\fi
     \fi
   \fi\fi
   \noindent
   \setbox8\hbox
     {\ifconditional\headlistitem
        \ifconditional\symbollistitem
          \symsymbol
        \else
          \doitemattributes\itemlevel\c!headstyle\c!headcolor{\listitem}%
        \fi
      \else
        \ifconditional\symbollistitem
          \symsymbol % no attributes, why?
        \else
          \doitemattributes\itemlevel\c!style\c!color{\listitem}%
        \fi
      \fi}%
   \doifsomething\somdestination
     {\setbox8\hbox{\goto{\box8}[\somdestination]}}%
   \globallet\somdestination\empty
   \dimen2=\getitemparameter\itemlevel\c!width\relax
   % new, prevents loops when symbol is (not yet found) graphic
   \ht8=\strutheight
   \dp8=\strutdepth
   % so that content differs per run (esp mp graphics afterwards)
\checkforrepeatedlistitem
   \ifdim\dimen2<\zeropoint\relax
     \llap{\ifconditional\sublistitem\llap{+}\fi\box8\hskip\leftmargindistance}%
   \else
     \ifdim\dimen2=\zeropoint\relax
       \calculatelistwidth1{\dimen0}%
     \else
       \calculatelistwidth\itemlevel{\dimen0}%
     \fi
     \ifconditional\textlistitem
       \hbox{\ifconditional\sublistitem+\fi\box8\hskip\fontdimen2\font}\nobreak
     \else\ifconditional\inlinelistitem
       \hbox to \dimen0{\ifconditional\sublistitem\llap{+}\fi\box8\hfill}%
     \else\ifconditional\txtlistitem
       \dodotxtitem
       % \hskip-\dimen0 this makes them touch
     \else
       % todo: align+marge binnen de hbox
       \llap{\hbox to \dimen0{\ifconditional\sublistitem\llap{+}\fi\box8\hfill}}%
       \hskip\fullwidth % added for 'repeat' option fix
     \fi\fi\fi
   \fi
\forceunexpanded % needed for m conversion (\os) / i need to look into this
   \setevalue{\@@currentitemsymbol\itemlevel}%
     {\getvalue{\@@localitemsymbol\itemlevel}}% still problems with \uchar ?
    %{\noexpand\getvalue{\@@localitemsymbol\itemlevel}}% no, spoils subrefs
   \resetunexpanded
   \setfalse\headlistitem
   \setfalse\sublistitem
   \setfalse\symbollistitem
   \EveryPar{\ignorespaces}% needed ?
   \ignorespaces}

% I don't think this is the best way but it will require minimal
% change to the original sources.

\def\checkforrepeatedlistitem
 {\global\newdimen\fullwidth
  \ifnum\itemlevel=\plusone
    \initializeboxstack{item}%
  \fi
  \ifconditional\repeatlistitem
     \savebox{item}{\itemlevel}{\hbox{\copy8}}%
     \setbox8\hbox to \wd8
      {\setbox\scratchbox\hbox
         {\scratchcounter\itemlevel
          \advance\scratchcounter\minusone
          \dorecurse\scratchcounter{\foundbox{item}{\recurselevel}}}%
       \ifnum\itemlevel>\plusone
         \ifdim\wd\scratchbox>\zeropoint
           %\hskip-\dimen2
           \global\advance\fullwidth\wd\scratchbox
           \box\scratchbox
         \fi
       \fi
       \box8}%
  \fi}

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