calculate in forms

calculate in forms

[Haseloff, Lutz]

Hi all, Hi Hans,

I want to prepare a form with calculating fields.
My file looks like this:
.....
\startJScode{Format}
AFNumber_Format(2, 3, 0, 0, "", true);
\stopJScode
\startJScode{Keystroke}
AFNumber_Keystroke(2, 3, 0, 0, "", true);
\stopJScode
\startJScode{Calculate}
AFSimple_Calculate("SUM", new Array ("Summand1", "Summand2"));
\stopJScode
.......%%% I use the Scripts from AForm.js because my JS programming is poor
\setupfield
  [ErgSetup]

[frame=on,width=8cm,height=4ex,format=JS(Format),afterkey=JS(Keystroke),calc
ulate=JS(Calculate)]
........
\hbox to 11cm{Summand 2:\hfill  \field[Summand2]}

\hbox to 11cm{Ergebnis :\hfill  \field[Ergebnis]}
...........

All scripts are at the right places in the pdf-file (tested with Acrobat)
and the format and afterkey
scripts work very fine.
Only the calculation does not work.

Is it possible that the missing  "/CO [...]" near /Fields is the Reason?
In the PDF Specification the "Calculate Order" is required.

Greetings

Lutz

Re: calculate in forms

[Hans Hagen]

At 03:48 PM 12/20/99 +0100, Haseloff, Lutz wrote:

>I want to prepare a form with calculating fields.
>My file looks like this:
>.....
>\startJScode{Format}
>AFNumber_Format(2, 3, 0, 0, "", true);
>\stopJScode
>\startJScode{Keystroke}
>AFNumber_Keystroke(2, 3, 0, 0, "", true);
>\stopJScode
>\startJScode{Calculate}
>AFSimple_Calculate("SUM", new Array ("Summand1", "Summand2"));
>\stopJScode
>.......%%% I use the Scripts from AForm.js because my JS programming is poor
>\setupfield
>  [ErgSetup]
> 
>[frame=on,width=8cm,height=4ex,format=JS(Format),afterkey=JS(Keystroke),calc
>ulate=JS(Calculate)]
>........
>\hbox to 11cm{Summand 2:\hfill  \field[Summand2]}
>
>\hbox to 11cm{Ergebnis :\hfill  \field[Ergebnis]}
>...........
>
>All scripts are at the right places in the pdf-file (tested with Acrobat)
>and the format and afterkey
>scripts work very fine.
>Only the calculation does not work.
>
>Is it possible that the missing  "/CO [...]" near /Fields is the Reason?
>In the PDF Specification the "Calculate Order" is required.

Hm. I'll have to look into that. At our site there is a demo using
calculations: travel. You could take a look at that too check.  

Hans

-----------------------------------------------------------------
                                          Hans Hagen | PRAGMA ADE
              Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.nl
-----------------------------------------------------------------

Re: calculate in forms

[Hans Hagen]

Hi Lutz, 

>All scripts are at the right places in the pdf-file (tested with Acrobat)
>and the format and afterkey
>scripts work very fine.
>Only the calculation does not work.

For proper testing I need a complete file. 

>Is it possible that the missing  "/CO [...]" near /Fields is the Reason?
>In the PDF Specification the "Calculate Order" is required.

I wonder if this entry is really needed. I want to test it first. 

This calculate thing is rather fuzzy. It's often best to do it manually,
i.e. code it. 

\startJSpreamble {Calculate} used now
  function Calculate ()
    { v = getField("Ergebnis") ; v.value = 0 ;
      v.value += getField("Summand1").value ;
      v.value += getField("Summand2").value }
\stopJSpreamble

\startJScode{Format}
  AFNumber_Format(2, 3, 0, 0, "", true) ; Calculate() ;
\stopJScode

\startJScode{Keystroke}
  AFNumber_Keystroke(2, 3, 0, 0, "", true) ; Calculate() ;
\stopJScode

In due time I will cook up some proper auxiliary functions. 

Hans  

-----------------------------------------------------------------
                                          Hans Hagen | PRAGMA ADE
              Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.nl
-----------------------------------------------------------------

Re: calculate in forms

[Haseloff, Lutz]

Hi Hans, Hi all,

> \startJSpreamble {Calculate} used now
>   function Calculate ()
>     { v = getField("Ergebnis") ; v.value = 0 ;
>       v.value += getField("Summand1").value ;
>       v.value += getField("Summand2").value }
> \stopJSpreamble

This treats the values like strings if they contain other seperators as a
dot
I changed your solution to:

\startJSpreamble {Calculate} used now
  function Calculate ()
    { v = getField("Ergebnis") ; v.value = 0 ;
      v.value += AFMakeNumber(getField("Summand1").value) ;
      v.value += AFMakeNumber(getField("Summand2").value)  }
\stopJSpreamble

and this works very nice for me.

Thank you very much

Happy New Year

Lutz