-------- Forwarded Message --------

Subject:	Re: [LAD] How can an LV2 plugin UI get the value of a control port from the plugin?
Date:	Mon, 20 Oct 2014 01:27:10 +0100
From:	Philippe Coatmeur <philcm@gnu.org>
Organisation:	GNU
To:	Harry van Haaren <harryhaaren@gmail.com>

On Fri, Oct 17, 2014 at 1:30 PM, Phil CM <philcm@gnu.org> wrote:

Also each time the UI is opened, the widgets are reset at maximum (not the values).

 

Hi Phil,

 

Glad to see you're excited and working hard on learning LV2! Checkout the example plugins: they show how things work.

In the UI, there is a  port_event()  function. It tells the UI what port changed, and what its current value is. Use this to do widget->setValue( newValue ); and you're done ;)

For this I had to write my own

  int setValue(int value) {
    // this->scrollvalue(value);
    cout << "Called with value " << value << endl;
  }

And it does get called by port_event() now

• what do I put in this setValue() in order to actually update the widget value?

There is a int scrollvalue(int pos,int size,int first,int total); in Fl_Slider.H but can't call it from the class, witch is not explicitely extending Fl_Slider from what I can see... Is it?

Thanks everybody

--Phil

PS - Apparently Sorcer is using AvTK on top of FLTK, I was under the impression that Sorcer's UI was using NTK, am I mistaking?

Eg (from OpenAV's ArtyFX, Bitta plugin)

https://github.com/harryhaaren/openAV-ArtyFX/blob/master/bitta/gui/ui.cxx#L131

How can I get the control ports values from the UI perspective?

In answer to your Q, how to "get", you don't: you're told when there's a new value.

HTH, Cheers, -Harry

--

http://www.openavproductions.com

-- 
Philippe "xaccrocheur" Coatmeur
http://bitbucket.org/xaccrocheur / https://github.com/xaccrocheur
http://opensimo.org/play/