Stepping through PDF-Layers

Stepping through PDF-Layers

[Wolfgang Schuster]

Hi,

I want to animate layers in a pdf like we can do at the moment with
fieldstacks to show always the next picture after the click on a button.

I will explain this on the following example.

\setupcolors[state=start]
\setupinteraction[state=start]

\defineoverlay[nextlayer][\overlaybutton{VideLayer{L1}}]

\starttext

\framed
  [width=2cm,
   height=2cm,
   offset=overlay,
   background=nextlayer]
  {\dorecurse{4}
     {\defineproperty[L\recurselevel][layer][title=layer\recurselevel,state=stop]%
      \startproperty[L\recurselevel]
      \ifcase\recurselevel\or\red\or\green\or\blue\or\yellow\fi
      \hrule height 5mm width\hsize\relax
      \stopproperty}}

\stoptext

When i click on the frame the first layer will be visible, my problem
is now to make after a second click the next layer visible on so on.

I'am also interested to make one or more layers in one step visible
and hide another one at the same step.

The different layers I want to hide and show are stored in commalist
(not yet done but this my methos for the future).

Wolfgang
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Re: Stepping through PDF-Layers

[Hans Hagen]

Wolfgang Schuster wrote:
> Hi,
> 
> I want to animate layers in a pdf like we can do at the moment with
> fieldstacks to show always the next picture after the click on a button.

\usemodule[pre-60]

and look into s-pre-6* to see how to enable it


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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: Stepping through PDF-Layers

[Wolfgang Schuster]

2007/10/10, Hans Hagen <pragma@wxs.nl>:
> Wolfgang Schuster wrote:
> > Hi,
> >
> > I want to animate layers in a pdf like we can do at the moment with
> > fieldstacks to show always the next picture after the click on a button.
>
> \usemodule[pre-60]
>
> and look into s-pre-6* to see how to enable it

Hi Hans,

this is what I was looking for, I adapted now my example and it works fine.

The next thing is to change the macro for my own needs but I can do
this later when I will integrate it into my macro, I wanted to know at the
moment of I can use layers as a replacement for fieldstacks and the
solution was yes.

\usemodule[pre-60]

\setupcolors[state=start]
\setupinteraction[state=start,click=off]

\setupbackgrounds[text][background=]

\starttext

\StartLocalSteps

\framed
  [width=2cm,
   height=2cm,
   offset=overlay,
   background=invoke]
  {\dorecurse{4}
     {\StartLocalStep
      \ifcase\recurselevel\or\red\or\green\or\blue\or\yellow\fi
      \hrule height 5mm width\hsize\relax
      \StopLocalStep}}

\StopLocalSteps

\stoptext

Wolfgang
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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