[racket-dev] printing images in REPL

I've added an index entry for 'configure-runtime now. Here's the
relevant page (the last section):

http://docs.racket-lang.org/reference/running-sa.html

Robby

On Sat, Aug 28, 2010 at 9:18 PM, Robby Findler
<robby at eecs.northwestern.edu> wrote:
> And sorry: here's a keyword: read-language. You'll want to set up your
> language so that it can answer those queries. Then drracket will call
> the info proc with 'configure-runtime. I could have sworn that was
> documented somewhere, but I'm not finding it (I think that must be a
> bug in searching or the entry got lost or something). In any case
> drracket usees it like this:
>
>                (let ([configs (get-info 'configure-runtime '())])
>                  (for ([config (in-list configs)])
>                    ((dynamic-require (vector-ref config 0)
>                                      (vector-ref config 1))
>                     (vector-ref config 2))))))))
>
> where get-info comes from read-language.
>
> And yes, this is on my list to add to the guide-like docs in the tools manual.
>
> hth,
> Robby
>
> On Sat, Aug 28, 2010 at 8:49 PM, Robby Findler
> <robby at eecs.northwestern.edu> wrote:
>> Did you forget what I explained at PLT day? You don't seem to be
>> asking questions in terms of those things, so I'm not sure whether
>> what I say is getting thru at all.
>>
>> Robby
>>
>> On Sat, Aug 28, 2010 at 8:47 PM, Shriram Krishnamurthi <sk at cs.brown.edu> wrote:
>>> ... which was my original question.  But thanks.
>>>
>>> On Sat, Aug 28, 2010 at 9:36 PM, Robby Findler
>>> <robby at eecs.northwestern.edu> wrote:
>>>> I guess you don't have the print handler set up right.
>>>>
>>>> On Sat, Aug 28, 2010 at 8:23 PM, Shriram Krishnamurthi <sk at cs.brown.edu> wrote:
>>>>> The value I was returning is whatever kind of object is returned when
>>>>> you embed an image in the Definitions window.  That is, this was a
>>>>> pasted, atomic image, not one created by a computation.  I guess
>>>>> they're not treated the same, but I'm surprised that ASL processing
>>>>> the Definitions window didn't do the right conversion...
>>>>>
>>>>> On Thu, Aug 26, 2010 at 8:25 PM, Robby Findler
>>>>> <robby at eecs.northwestern.edu> wrote:
>>>>>> At the moment there is a barn-door sized security hole in DrRacket,
>>>>>> whereby it will take any snip% instance from the user's program and
>>>>>> just display it in the repl. You can exploit this for Good by making
>>>>>> the current-print of your language turn some values into snips (like
>>>>>> images and things). 2htdp/image already does this, so that should just
>>>>>> work if you return those. Its hard to tell what value Shriram's
>>>>>> program was returning tho. But if it is a bitmap% object, he just has
>>>>>> to do
>>>>>>
>>>>>>  (make-object image-snip% ...the-bitmap-goes-here...)
>>>>>>
>>>>>> We will close this hole at some point, when we have a reasonable way
>>>>>> to allow people to add new kinds of values without the security
>>>>>> breach.
>>>>>>
>>>>>> Robby
>>>>>>
>>>>>> On Thu, Aug 26, 2010 at 6:17 PM, Jay McCarthy <jay.mccarthy at gmail.com> wrote:
>>>>>>> From what I can tell, it comes from ensuring that DrRacket shares the
>>>>>>> htdp/image (or whatever) namespace with the running program so the
>>>>>>> structs are the same and DrRacket's default renderer is detecting it.
>>>>>>> I'm not sure how to replicate it though. (I tried for a bit so I could
>>>>>>> make #lang frtime work.)
>>>>>>>
>>>>>>> Jay
>>>>>>>
>>>>>>> On Thu, Aug 26, 2010 at 11:55 AM, Shriram Krishnamurthi <sk at cs.brown.edu> wrote:
>>>>>>>> What is the #lang magic that makes
>>>>>>>>
>>>>>>>>> (get-image-from-web "http://racket-lang.org/logo.png")
>>>>>>>> (instantiate (class ...) ...)
>>>>>>>>
>>>>>>>> show the image rather than just its constructor?
>>>>>>>>
>>>>>>>> Shriram
>>>>>>>> _________________________________________________
>>>>>>>>  For list-related administrative tasks:
>>>>>>>>  http://lists.racket-lang.org/listinfo/dev
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Jay McCarthy <jay at cs.byu.edu>
>>>>>>> Assistant Professor / Brigham Young University
>>>>>>> http://teammccarthy.org/jay
>>>>>>>
>>>>>>> "The glory of God is Intelligence" - D&C 93
>>>>>>> _________________________________________________
>>>>>>>  For list-related administrative tasks:
>>>>>>>  http://lists.racket-lang.org/listinfo/dev
>>>>>>
>>>>>
>>>> _________________________________________________
>>>>  For list-related administrative tasks:
>>>>  http://lists.racket-lang.org/listinfo/dev
>>>
>>
>