[pstricks] mouseover/tooltip in a plot

[Alexander Grahn]

Sebastian,

On Fri, Nov 28, 2008 at 09:50:42PM +0100, Juergen Gilg wrote:
> Sebastian Preuß wrote:
>>
>> i plot graphics sometimes grphics with pstricks.
>> That works fine.
>> Now i'm trying to set tooltips for every datapoint.
>> So the user see a defined value if he stop the mouse over the point.
>>
>>   
> Hi Sebastian,
>
> attached is a simple example with a _Mouseover Event_, activating an 
> Optional Content Group (OCG or layer).
> The coordinates of a point are shown when mousing over. This is not a 
> Tooltip -- this is even a more sophisticated workaround of a tooltip, where 
> you can let appear some LaTeX code within this OCG.
>
> However there is *aeb_pro* needed and the workflow is:
>
> LaTeX --> dvips --> DISTILLER --> Acrobat Pro 7++
>
> to generate the attached PDF.
>
> Adobe Reader 7++ is necessary to view it, cause a PDF viewer is needed, 
> that can handle the implemented JavaScript.

If you feel that a simple ascii-text tooltip will do as well, you could
try this (Distiller/AcroPro _not_ required):

  \documentclass{article}
  \usepackage{pstricks-add}
  \usepackage{hyperref}
  
  \newcounter{tooltip}
  \newcommand\tooltip[2]{%
    % arg #1: text to put on the page
    % arg #2: tooltip text
    \pdfmark[#1]{
      pdfmark=/ANN,
      Subtype=/Widget,
      Raw={
        /TU (#2)/T (tooltip \thetooltip)
        /FT/Btn/Ff 65536/H/N
      }
    }%
    \stepcounter{tooltip}%
  }
  
  \begin{document}
    \begin{center}
      \begin{pspicture}(-2,-2)(2,2)
        \psaxes(0,0)(-2,-2)(2,2)
        \rput(1,1){{\tooltip{$\bullet$}{1,1}}}
        \rput(-1,-1){{\tooltip{$\bullet$}{-1,-1}}}
      \end{pspicture}
    \end{center}
  \end{document}

Alexander


PS (to Juergen):

So far, I haven't managed to make parts of the page content optional using pdfmarks and Ghostscript.