[chimera-dev] popup balloons with custom information for vrml models

[Greg Couch]

In ChimeraX, the .note command sets the balloon help for subsequent 
objects.  Is that sufficient to do what you want?

     -- Greg

On 9/12/2022 11:05 AM, Eric Pettersen via Chimera-dev wrote:
>> On Sep 12, 2022, at 6:28 AM, Merce Alemany Chavarria via Chimera-dev 
>> <chimera-dev at cgl.ucsf.edu> wrote:
>>
>>
>> Dear Chimera developers,
>>
>> We are developing an extension that renders vrml models using BILD 
>> commands. For the moment the vrml models have a name that shows up on 
>> Models Panel, but when the mouse is placed on top of them only the 
>> number of model is displayed (like '#11').
>> We would like to add to the models a popup balloon with customized 
>> information, in a similar way as information if shown for classical 
>> chimera objects (atoms, bonds...).
>> Could you guide us on how to approach it?
>
> Hi Mercè,
> So the first thing I'd like to say is that this is a whole lot easier 
> in ChimeraX, and we actively support and work on ChimeraX, whereas 
> Chimera is legacy software so you might want to consider doing this in 
> ChimeraX instead if possible.  Nonetheless, there is an extremely 
> kludgy way to do this in Chimera.  It involves giving the BILD model a 
> fake "molecule" attribute that in turn has an "oslIdent()" method that 
> returns what you want to display in the balloon help.  So assuming 
> your BILD model was in a variable named "b" and you wanted it to show 
> the balloon help "B's balloon help", this would do it:
>
> class BalloonHelp:
> def __init__(self, info):
> self.info <http://self.info/> = info
>
> def oslIdent(self):
> return self.info <http://self.info/>
>
> b.molecule = BalloonHelp("B's balloon help")
>
>> I will use this e-mail also to let you know that the link to 
>> chimera's source code 
>> (https://plato.cgl.ucsf.edu/trac/chimera/browser/trunk)  found in 
>> this page https://www.cgl.ucsf.edu/chimera/docs/sourcecode.html 
>> returns a 404 error. Is there an alternative way to check it out?
>
> I see no such link in that page.  The source code checkout given in 
> that page is "svn checkout https://svn.cgl.ucsf.edu/svn/chimera/trunk 
> chimera", which works fine for me.
>
> --Eric
>
> Eric Pettersen
> UCSF Computer Graphics Lab
>
>
>
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