gardener, Interface administrators, Administrators
3,893
edits
Changes
Jump to navigation
Jump to search
m
< Probably for your [[VisualsPresentations|slides]] | , probably for some [[Presentations]] Animation| [[Layersanimation]] >or for whatever reason you may want it: you can hide some content from the document, while leaving exactly the same amount of space as that content would need if typeset in the usual way.
Probably for your '''Beware''', this doesn’t work in current (2018) MkIV. Have a look at [[Presentations|slidesViewer Layers]], probably for some [[Animation{{src|animation]] or for whatever reason you may want it: you can hide some content from the document, while leaving exactly the same amount of space as that content would need if typeset in the usual wayattr-lay.mkiv}}.
<table style{| class="border:1px solid #DDDDDD; width:100%wikitable" valign="top">|-! method ! properties<tr style="background|-color:#DDDDDD" align="left" valign="top"><th> method </th><th> principle </th><th> PROS </th><th> CONS </th></tr> <tr><td>| <texcode>\definepropertydefineeffect[my-secrets][layer][state=top]\startpropertystarteffect[my-secrets]
</td><td>|
</td><td>
</td><td>* works with newer Adobe Acrobat/Viewer, ; in most other browsers the content is not hidden
</td></tr> <tr |- align="left" valign="top" style="background-color:#EEEEEE;"><td>| <texcode>\definepropertydefineeffect[my-hasitationshesitations][layer][state=stop] \startpropertystarteffect[my-hasitationshesitations]
</td> <td>| * makes (invisible) layer, which can be switched on and off (JS-based)</td> <td>
</td></tr> <tr><td>|- align="left" valign="top" | <texcode>\startpropertystarteffect[hidden]% In MkIV
</td><td>|
</td><td>
</td><td>
</td></tr> <tr |- align="left" valign="top" style="background-color:#EEEEEE;"><td>| [[Hiding Content#The plain TeX way|the plain TeX way]]</td><td>|
</td><td>* <b>absolutely no</b> content in the document, not even hidden (only blank space)</td><td>
</td></tr></table>|}
== Layer: state=stop ==
== Transparent fonts ==
no edit summary
== Overview ==
On the [[http://archive.contextgarden.net/thread/20050707.223338.a9169811.html mailing list]] Hans suggested many different ways (astonishing easy to use) to hide the content in a PDF document. Sadly, most of them are viewer-dependent.
My public secret.
\stoppropertystopeffect
</texcode>
* makes (invisible) layer on top (JS-based)
* completely hides everything
* I managed to freeze Acrobat 6.0 pro when trying to save the text
To \ConTeXt\ or not to \ConTeXt?
\stoppropertystopeffect\button{Show Decision}[VideLayer{my-hasitationshesitations}]\button{Hide Decision}[HideLayer{my-hasitationshesitations}]\button{Toggle Decision}[ToggleLayer{my-hasitationshesitations}]
</texcode>
* you can switch the content on and off
* when hidden, it is completely hidden (as above)<* works with newer Adobe Acrobat/td><td>* (same as above)Viewer; in most other browsers the content is not hidden
* even some new Acrobat versions can't handle the buttons
My secret hidden for Adam's apple ;)
\stoppropertystopeffect
</texcode>
* makes transparent fonts
* no JavaScript
* pretty safe for different viewers
* only text is hidden, but not images, rules, ...
* puts a blank box instead of its content (letter)
* only works for letters and whitespace, no macros, no figures, ...
== The plain TeX way ==
This example was adapted from the TeXBOOK. However, it can only handle usual text. Forget about macros, forget about graphics ...
I hope and still believe that it is possible to extend this macro to make it work in general case. This would also be a preferred solution as it doesn't depend on the viewer's JavaScript <i>''in</i>''capabilities.
<texcode>
You'll understand that once you get to know it better.
</context>
== Final Remarks ==
* <b>Just as a hint</b>: Dondon't ever think about hiding your secrets or solutions to the problems for your students that this way!<br>If you happen to have . Readers with Adobe Acrobat Professional, you can select <i>''Layers</i> '' on the left and switch the hidden layer on again.<br><font color="red">YOU HAVE BEEN WARNED!</font>You have been warned.* kerning: Kerning could cause micro miniscule differences in the exact placemet placement of the (hidden) content.
[[Category:Layout]]
[[Category:Presentation]]
