[Scilab-users] titlepage() <= LateX support and verbatim

[jasper van baten]

Hi Samuel,

Perhaps attaching scilab scripts to mail is not a good idea. In
combination with the file extension association and the 'host' command
this is prone to misuse.

Best wishes,

Jasper.



On 8/30/2016 14:11, Samuel Gougeon wrote:
> Hi Antoine,
>
> Le 28/08/2016 09:46, Antoine Monmayrant a écrit :
>> Le Samedi, Août 27, 2016 19:24 CEST, philippe <rouxph.22 at gmail.com> a écrit: 
>> ../..
>> Thanks Philippe, but nope, it does not work that easily.
>> It does for "\alpha", but my real use case is a bit more complicated and calling titlepage directly is a mess.
>> I use titlepage(errormessage) where errormessage is a string array with a lot of starting and trailing " " (white spaces).
>> I need to preserve these white spaces and use a monospace font to preserve the relative alignment between the different lines in the array.
>> Doing this is a bit convolved when using titlepage alone:
>>  - add some character at the begining of each line (to prevent titlepage from stripping the white spaces),
>>  - call titlepage,
>>  - get a handle the the create textbox,
>>  - change text justification (middle->lef centered)
>>  - change font style (0 for monospace).
>>
>> This is what I use now, but titlepage("$\verb| error message |$") would have been more compact and elegant.
> .
> I definitely agree on the fact that xstring() (and xstringb(), called
> by titlepage(),
> and that are the guilty guys) always trimming all leading spaces is an
> issue.
>
> It should be the user's responsability to use stripblanks() whenever
> it is required
> before feeding xstring(), and that xstring() does not always do that in an
> irreversible way (text stored in xstring.text is actually deblanked).
>
> Presently, the text.alignment property can be either "left", "center"
> and "right",
> the default being "left".
> IMO, a new *"as_is"* or *"none"* value should be added, and even
> become the default.
>
> For the time being, you may test and use the attached version of
> titlepage:
> As soon as at least one of the strings has a leading space, the whole
> matrix
> of strings is displayed "as is", in order to preserve any indentations
> and so.
> To do so, strings are displayed in LaTeX mode. Run
> --> head_comments titlepage // to get details, or see the header in
> the script.
>
> This workaround has 2 drawbacks:
>  * lines are more compact (IMO too compact). I did not find any way to
> tune this in supported LaTeX.
>  * The font style must be set when calling titlepage(). It can't be
> changed with text.font_style,
>     and must be chosen when calling titlepage(). And only 3 fonts are
> available.
> But the text.font_foreground attribute works!
>
> Example:
> t = ["Here are indented nested lists"
> "   a) First point"
> "      * First item"
> "      * Second item"
> "   b) Another view"
> "   c) For a new titlepage()?"
> ]
> clf
> subplot(2,2,1)
> titlepage(t)
> xtitle("Default titlepage(t)")
> subplot(2,2,2)
> // exec() the new titlepage.sci
> titlepage(t)
> subplot(2,2,3)
> titlepage([t ; "" ; t])
> head_comments titlepage
> subplot(2,2,4)
> titlepage(t,0)
> e = gce();
> e.font_foreground = color("blue");
> clear titlepage  // comes back to the default titlepage()
>
> *Results*:
>
>
> This can be proposed as is to upgrade the present titlepage(),
> even if it would be better to implement ASAP an "as_is" value for
> xstring.alignment.
>
> Cheers
> Samuel
>
>
>
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