Re: Math captcha with Wicket?

[nino martinez wael]

I know it was a dry spirited answer.. But have a look at jcaptcha or
simplecaptcha.. Both are built around servlets as far as I can see,
but they might offer a question / image engine also (so you can use it
directly with wicket)..

regards Nino

2010/5/6 Thomas Götz :
> nino martinez wael schrieb:
>>
>> http://java.sun.com/docs/books/tutorial/2d/overview/rendering.html
>
> Well, tanks ;-)
> I was hoping to find some ready-to-be-used library/components that already
> does that ...
>
>   -Tom
>
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Re: Math captcha with Wicket?

[Thomas Götz]

Thanks for the pointer!

   -Tom


Josh Glassman schrieb:

Take a look at

http://wicket.apache.org/docs/1.4/org/apache/wicket/extensions/markup/html/captcha/CaptchaImageResource.html

You might need to override some of it, or make your own customized version
to get the text and look you want.  Looks like a good starting point at
least.


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Re: Math captcha with Wicket?

[Josh Glassman]

Take a look at

http://wicket.apache.org/docs/1.4/org/apache/wicket/extensions/markup/html/captcha/CaptchaImageResource.html

You might need to override some of it, or make your own customized version
to get the text and look you want.  Looks like a good starting point at
least.

On Thu, May 6, 2010 at 10:08 AM, Thomas Götz  wrote:

> nino martinez wael schrieb:
>
>  http://java.sun.com/docs/books/tutorial/2d/overview/rendering.html
>>
>
> Well, tanks ;-)
> I was hoping to find some ready-to-be-used library/components that already
> does that ...
>
>   -Tom
>
>
> -
> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> For additional commands, e-mail: users-h...@wicket.apache.org
>
>

Re: Math captcha with Wicket?

[Thomas Götz]

nino martinez wael schrieb:

http://java.sun.com/docs/books/tutorial/2d/overview/rendering.html


Well, tanks ;-)
I was hoping to find some ready-to-be-used library/components that 
already does that ...


   -Tom

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Re: Math captcha with Wicket?

[nino martinez wael]

http://java.sun.com/docs/books/tutorial/2d/overview/rendering.html

:)

2010/5/4 Thomas Götz :
> Thanks for your input, Igor! Looks nice, but I'd also like to have that as a
> rendered image, rather than plain text (security risk?).
>
>   -Tom
>
> Igor Vaynberg wrote:
>>
>> off the top of my head
>
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Re: Math captcha with Wicket?

[Thomas Götz]

Thanks for your input, Igor! Looks nice, but I'd also like to have that 
as a rendered image, rather than plain text (security risk?).


   -Tom

Igor Vaynberg wrote:

off the top of my head


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Re: Math captcha with Wicket?

[Igor Vaynberg]

off the top of my head

class question { int lhs, int rhs, boolean plus;
void randomize() { lhs=math.random()*10, rhs=math.random()*10;
plus=math.random()>0.5;}
string tostring() { return ""+lhs+" "+((plus)?"+":"-")+" "+rhs; }
boolean check(int answer) { if (plus) return answer==lhs+rhs else
return answer==lhs-rhs; }


class answerfield extends textfield {
  private final imodel question;
  public answerfield(string id, imodel question) {
 super(id, new model());
 this.question=question;
 add(new ivalidator {
  public void validate(validatable validatable) {
if (!question.check(validatable.getvalue()) {
  validatable.error(new validationerror("are you
smarter then a first grader?"));
   });
   }

   protected void ondetach() { question.detach(); super.ondetach(); }
}

class mathcaptchapanel extends panel {
  private final question question=new question();

  public mathcaptchapanel(string id) {
 add(new label("question", new propertymodel(this, "question"));
 add(new answerfield("answer", new propertymodel(this, "question"));
   }

   protected void onbeforerender() { question.randomize();
super.onbeforerender(); }
}

-igor




On Mon, May 3, 2010 at 1:13 PM, Thomas Götz  wrote:
> Did anyone ever integrate some kind of math capture with Wicket ("please
> solve the following simple equation ...")? How would I do this, someone got
> a code pointer for me?
>
>   -Tom
>
>
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>

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Math captcha with Wicket?

[Thomas Götz]

Did anyone ever integrate some kind of math capture with Wicket ("please 
solve the following simple equation ...")? How would I do this, someone 
got a code pointer for me?


   -Tom


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