Slides: uncover things piecewise

Slides: uncover things piecewise

[Marco]

Hi,

I use the »simpleslides« module for a presentation and I wonder if it is
possible to uncover things piecewise. Take the following example:

\usemodule [simpleslides]
\starttext
\SlideTitle {My Topic}
\startitemize
  \item First  % Visible by default
  \item Second % Gray by default
  \item Third  % Gray by default
\stopitemize
\stoptext

I want to achieve the following: The first item should be visible by
default. The second and third items are not visible or grayed out. The by
jumping to the (physically) next slide (for the audience it's still the
same page) the second item will be displayed and so on...

I've found some old pieces of code in the mail archive but didn't get it to
work.

Kind regards
Marco


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Re: Slides: uncover things piecewise

[Marco]

Nobody who knows a solution?

Marco


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Re: Slides: uncover things piecewise

[Peter Münster]

On Tue, Jun 01 2010, Marco wrote:

> \usemodule [simpleslides]
> \starttext
> \SlideTitle {My Topic}
> \startitemize
>   \item First  % Visible by default
>   \item Second % Gray by default
>   \item Third  % Gray by default
> \stopitemize
> \stoptext

Not gray, but white:

\usemodule [simpleslides, pre-stepwise]
\setupinteraction[state=start]
\starttext
\SlideTitle {My Topic}
\startitemize
  \item First  % Visible by default
\StartSteps
  \item Second \FlushStep % Gray by default
  \item Third  \FlushStep % Gray by default
\StopSteps
\stopitemize
\stoptext

Cheers, Peter

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Re: Slides: uncover things piecewise

[Marco]

On Thu, 3 Jun 2010 15:46:17 +0200, Peter Münster <pmlists@free.fr>
wrote:

> On Tue, Jun 01 2010, Marco wrote:
> 
> > \usemodule [simpleslides]
> > \starttext
> > \SlideTitle {My Topic}
> > \startitemize
> >   \item First  % Visible by default
> >   \item Second % Gray by default
> >   \item Third  % Gray by default
> > \stopitemize
> > \stoptext
> 
> Not gray, but white:
> 
> \usemodule [simpleslides, pre-stepwise]
> \setupinteraction[state=start]
> \starttext
> \SlideTitle {My Topic}
> \startitemize
>   \item First  % Visible by default
> \StartSteps
>   \item Second \FlushStep % Gray by default
>   \item Third  \FlushStep % Gray by default
> \StopSteps
> \stopitemize
> \stoptext
> 
> Cheers, Peter
Thanks. This code looks promising and easy-to-use. But when I compile with

ConTeXt  ver: 2010.05.23 15:03 MKIV
luatex, version beta-0.60.1-2010042821

I get exactly the same result as with my code. All items on one page, no
steps.

Marco


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Re: Slides: uncover things piecewise

[Peter Münster]

On Thu, Jun 03 2010, Marco wrote:

> ConTeXt  ver: 2010.05.23 15:03 MKIV

My version 2010.05.24 13:05, but I don't think, that this matters.


> I get exactly the same result as with my code. All items on one page, no
> steps.

Perhaps your pdf-viewer does not support javascript.
I use acroread version 9.3.2 

Cheers, Peter

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Re: Slides: uncover things piecewise

[Marco]

> My version 2010.05.24 13:05, but I don't think, that this matters.
I also don't think so.
> 
> 
> > I get exactly the same result as with my code. All items on one
> > page, no steps.
> 
> Perhaps your pdf-viewer does not support javascript.
I think that's the reason.

> I use acroread version 9.3.2 
At home I use xpdf 3.02 and at work sumatra (unknown version).

Marco


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Re: Slides: uncover things piecewise

[Marco]

On Thu, 3 Jun 2010 17:02:24 +0200, Peter Münster <pmlists@free.fr>
wrote:

> [...]
> Perhaps your pdf-viewer does not support javascript.
> I use acroread version 9.3.2 
> 
> Cheers, Peter
After short research I found out that most pdf readers don't support Java
Script (so do xpdf and sumatra). So, this is not really a portable solution.

Any hints for achieving the same result in a portable way without Java
Script appreciated.

Kind regards
Marco


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Re: Slides: uncover things piecewise

[Alan BRASLAU]

On Thursday 03 June 2010 19:13:32 Marco wrote:
> On Thu, 3 Jun 2010 17:02:24 +0200, Peter Münster <pmlists@free.fr>
> 
> wrote:
> > [...]
> > Perhaps your pdf-viewer does not support javascript.
> > I use acroread version 9.3.2
> > 
> > Cheers, Peter
> 
> After short research I found out that most pdf readers don't support Java
> Script (so do xpdf and sumatra). So, this is not really a portable
> solution.
> 
> Any hints for achieving the same result in a portable way without Java
> Script appreciated.

Yes, unfortunately this does not work with libpoppler (okular, evince) either.

A (universal) solution would be to adapt \StartSteps\StopSteps
to generate multiple PAGES that would be progressively filled.
Not as sexy as javascript but it would work.

Alan
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Re: Slides: uncover things piecewise

[Marco]

On Thu, 3 Jun 2010 20:14:07 +0200, Alan BRASLAU <alan.braslau@cea.fr>
wrote:

> > After short research I found out that most pdf readers don't
> > support Java Script (so do xpdf and sumatra). So, this is not
> > really a portable solution.
> > 
> > Any hints for achieving the same result in a portable way without
> > Java Script appreciated.
> 
> Yes, unfortunately this does not work with libpoppler (okular,
> evince) either.
> 
> A (universal) solution would be to adapt \StartSteps\StopSteps
> to generate multiple PAGES that would be progressively filled.
That would be the solution I am looking for. But it seems not yet to
exist. Coding this is far behind my scope.

> Not as sexy as javascript but it would work.
I find a solution working in every reader more sexy than a solution
heavily depending on the used P(ortable)DF reader. Java Script seems
unlikely to be implemented in the majority of readers. It's the same
issue with sound and video in PDF files.

Best regards
Marco


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Re: Slides: uncover things piecewise

[taco]

Marco wrote:
>>
>> A (universal) solution would be to adapt \StartSteps\StopSteps
>> to generate multiple PAGES that would be progressively filled.
> That would be the solution I am looking for. But it seems not yet to
> exist. 

\usemodule[pre-50]

Same interface as pre-60, but using pages (and a bit limited,
iirc: all \FlushSteps end a paragraph, or something like that).

Best wishes,
Taco
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Re: Slides: uncover things piecewise

[Marco]

On Thu, 03 Jun 2010 20:50:33 +0200, taco <taco@elvenkind.com> wrote:

> Marco wrote:
> >>
> >> A (universal) solution would be to adapt \StartSteps\StopSteps
> >> to generate multiple PAGES that would be progressively filled.
> > That would be the solution I am looking for. But it seems not yet to
> > exist. 
> 
> \usemodule[pre-50]
> 
> Same interface as pre-60, but using pages (and a bit limited,
> iirc: all \FlushSteps end a paragraph, or something like that).
Thanks for this hint. That goes in the right direction, however it's not
really working. Take this code:

\usemodule [simpleslides, pre-50]
\starttext
\SlideTitle {My Topic}
\startitemize
  \item First
  \StartSteps
    \item Second \FlushStep
    \item Third  \FlushStep
  \StopSteps
\stopitemize
\stoptext

The first item is placed correctly on the first page. The second item is
misplaced, it's also on the first page and (you're right Taco) a paragraph is
superfluously introduced. The third item is placed correctly, after the
second.

Marco


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Re: Slides: uncover things piecewise

[Peter Münster]

On Thu, Jun 03 2010, Marco wrote:

> The first item is placed correctly on the first page. The second item is
> misplaced, it's also on the first page and (you're right Taco) a paragraph is
> superfluously introduced. The third item is placed correctly, after the
> second.

You can also look here:

http://wiki.contextgarden.net/SlideWithSteps

and here:

http://modules.contextgarden.net/t-rsteps

and here:

http://wiki.contextgarden.net/RawSteps

and here:

http://archive.contextgarden.net/message/20041106.080646.2544e4f3.html

Cheers, Peter

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Contact information: http://pmrb.free.fr/contact/


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Re: Slides: uncover things piecewise

[Aditya Mahajan]

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On Thu, 3 Jun 2010, Marco wrote:

> On Thu, 3 Jun 2010 17:02:24 +0200, Peter Münster <pmlists@free.fr>
> wrote:
>
>> [...]
>> Perhaps your pdf-viewer does not support javascript.
>> I use acroread version 9.3.2 
>> 
>> Cheers, Peter
> After short research I found out that most pdf readers don't support Java
> Script (so do xpdf and sumatra). So, this is not really a portable solution.
>
> Any hints for achieving the same result in a portable way without Java
> Script appreciated.

I think that a luatex solution should be easy (for Hans, hint hint).

Collect everything on a page, and do some attribute magic to reveal it one 
by one (or change colors, etc). Personally, I occasionally use a primitive 
and ugly solution

\StartSteps{4}
\startitemize
  \item ...
  \2{\item ...}
  \3{\item ...}
  \4{\item ...}
\stopitemize
\StopSteps

where \StartSteps collects its body, typesets it 4 times. In the first 
iteration, \1 = \donoting, everything else is \gobbleoneargument; in the 
2nd iteration, \1 and \2 = \donothing and so on.

Aditya

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Re: Slides: uncover things piecewise

[Taco Hoekwater]

Aditya Mahajan wrote:
> On Thu, 3 Jun 2010, Marco wrote:
> 
>> On Thu, 3 Jun 2010 17:02:24 +0200, Peter Münster <pmlists@free.fr>
>> wrote:
>>
>>> [...]
>>> Perhaps your pdf-viewer does not support javascript.
>>> I use acroread version 9.3.2
>>> Cheers, Peter
>> After short research I found out that most pdf readers don't support Java
>> Script (so do xpdf and sumatra). So, this is not really a portable 
>> solution.
>>
>> Any hints for achieving the same result in a portable way without Java
>> Script appreciated.
> 
> I think that a luatex solution should be easy (for Hans, hint hint).

> Collect everything on a page, and do some attribute magic to reveal it 
> one by one (or change colors, etc). 

I was thinking the same thing (including the Hans, hint hint bit :))

By hooking into the output routine using attributes, there would be
no problems with environments and/or macro expansion, and even better,
everything has to be typeset only once.


Best wishes,
Taco


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Re: Slides: uncover things piecewise

[Marco]

On Thu, 3 Jun 2010 21:44:45 +0200, Peter Münster <pmlists@free.fr>
wrote:

> You can also look here:
> 
> http://wiki.contextgarden.net/SlideWithSteps
> 
> and here:
> 
> http://modules.contextgarden.net/t-rsteps
> 
> and here:
> 
> http://wiki.contextgarden.net/RawSteps
> 
> and here:
> 
> http://archive.contextgarden.net/message/20041106.080646.2544e4f3.html
I tried all your suggestions. Here are the results:

> http://wiki.contextgarden.net/SlideWithSteps
Compiling the example code on this page I get the error
! Use of \dospecialabout doesn't match its definition.

> http://modules.contextgarden.net/t-rsteps
Compiling the example code in the module itself I get the error
! Missing number, treated as zero.

> http://archive.contextgarden.net/message/20041106.080646.2544e4f3.html
Compiling the first example on this page I get the error
! Undefined control sequence.
[...]
l.111 \StopSteps

> http://wiki.contextgarden.net/RawSteps
These examples brought me on the right track. It works almost. Using the
following code you can see that the page counter is messed up. Compare
the results compiled with

context test.tex                # page counter messed up
context --mode=nosteps test.tex # page counter OK

\usemodule [rsteps]
\usemodule [simpleslides] [style=ThickStripes]
\startmode [nosteps]
  \let\StartSteps\relax
  \let\StopSteps \relax
  \def\FromStep [#1]#2{#2}
\stopmode
\starttext

\SlideTitle {First Topic} \null
\SlideTitle {Second Topic}
\StartSteps
\startitemize
  \FromStep[1]{\item 1st}
  \FromStep[2]{\item 2nd}
  \FromStep[3]{\item 3rd}
  \FromStep[4]{\item 4th}
\stopitemize
\StopSteps

\SlideTitle {Third Topic} \null
\stoptext

The steps result is as I expected. I get 4 physical pages and I can step
through the items. But the wrong page counter makes the it unusable since
most simpleslides styles use them (on purpose). Maybe it's just a small fix.

I wonder why I have to install the module manually. It is not included in
the minimals. I think this functionality should be integrated into
simpleslides (when the bug is fixed). It would make its use more simple.

Thanks for pointing me in the right direction.

Best regards
Marco


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Re: Slides: uncover things piecewise

[Peter Münster]

On Fri, Jun 04 2010, Marco wrote:

> > http://wiki.contextgarden.net/SlideWithSteps
> Compiling the example code on this page I get the error
> ! Use of \dospecialabout doesn't match its definition.

Strange, no problem here...


> > http://modules.contextgarden.net/t-rsteps
> Compiling the example code in the module itself I get the error
> ! Missing number, treated as zero.
> 
> > http://archive.contextgarden.net/message/20041106.080646.2544e4f3.html
> Compiling the first example on this page I get the error
> ! Undefined control sequence.
> [...]
> l.111 \StopSteps

When you use old code, it's worth the effort to try mkii.

Cheers, Peter

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Re: Slides: uncover things piecewise

[Marco]

On Fri, 4 Jun 2010 16:34:25 +0200, Peter Münster <pmlists@free.fr>
wrote:

> On Fri, Jun 04 2010, Marco wrote:
> 
> > > http://wiki.contextgarden.net/SlideWithSteps
> > Compiling the example code on this page I get the error
> > ! Use of \dospecialabout doesn't match its definition.
> 
> Strange, no problem here...
Sorry, my mistake. During copy-paste the $$ vanished. Compiles OK.

> > > http://modules.contextgarden.net/t-rsteps
> > Compiling the example code in the module itself I get the error
> > ! Missing number, treated as zero.
> > 
> > > http://archive.contextgarden.net/message/20041106.080646.2544e4f3.html
> > Compiling the first example on this page I get the error
> > ! Undefined control sequence.
> > [...]
> > l.111 \StopSteps
> 
> When you use old code, it's worth the effort to try mkii.
Yep. The example compiles with mkii. I didn't try since I always work with
mkiv.


Marco


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