[PD] Data structures and their clickable area

João Pais jmmmpais at googlemail.com
Tue Jan 28 12:40:54 CET 2014

there might be a complicated and confuse way of doing it - by clicking the  
scalar, you activate a click message to the drawing window, that clicks in  
the drawed number. For that you would have to look around the click  
messages in the pd documents, which I didn't really understood so far.


> On 01/27/2014 05:35 PM, Roman Haefeli wrote:
>> Hi
>> I'm using a template consisting of a rectangle done with [filledpolygon]
>> and a number [drawnumber] in it. While mouse clicks anywhere in the area
>> of the rectangle are detected, it's only possible to change the number
>> with the keyboard when I exactly click on the number. Is there a way to
>> make the number catch the keyboard no matter where I click in the
>> rectangle?
> That's not possible.  Essentially what you want is to take a click from  
> one draw command-- [filledpolygon]-- and "map" it or forward it to  
> another-- [drawnumber].  Scalars don't give you any tools to hook in to  
> a parent drawing command's widgetbehavior that way.
>>   Similarly, I'd like to be able to mouse-drag anywhere in the
>> rectangle in order to change the value of the number.
> You could probably do it if you use a field variable to define hotspots  
> on every 6x6 tile of the rectangle.  But you'd also have to constrain  
> movement of the rectangle by abusing the quanta syntax, something like  
> (-whatever:whatever)(0:0).  That would presumably constrain the field  
> variable's screen coordinates so that it doesn't move when you  
> click-drag it.  Then use the same field variable for your [drawnumber].
> I'm almost finished with some new drawing instructions for data  
> structures in Pd-l2ork that implement a subset of the svg spec. I've got  
> some mouseover/mouseout widgetbehaviors working, but still nothing  
> particularly sophisticated in terms of mapping mouse/keyboard  
> interaction to field variables.
> One possibility is to make the hotspot bbox settable.  Or maybe have a  
> method to forward widgetbehaviors to another drawing command.
> -Jonathan
>> Any ideas?
>> Roman
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