On 17/10/14 15:56, Harry van Haaren wrote:
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 ;)

Eg (from OpenAV's ArtyFX, Bitta plugin)
https://github.com/harryhaaren/openAV-ArtyFX/blob/master/bitta/gui/ui.cxx#L131
In this very example, value() seems to be a method of graph object, but when I look at it :

{ graph = new Avtk::Crusher(5, 36, 150, 126, "graph");
graph->box(FL_UP_BOX);
graph->color((Fl_Color)179);
graph->selection_color(FL_INACTIVE_COLOR);
graph->labeltype(FL_NO_LABEL);
graph->labelfont(0);
graph->labelsize(14);
graph->labelcolor(FL_FOREGROUND_COLOR);
graph->callback((Fl_Callback*)cb_graph);
graph->align(Fl_Align(FL_ALIGN_BOTTOM));
graph->when(FL_WHEN_CHANGED);
} // Avtk::Crusher* graph

Still can't see the setValue() you are talking about... I do see when(FL_WHEN_CHANGED); used a lot in your plugins, is when() what I'm looking for?

Thanks -Phil

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/