Help with displaying knob value in a label

[Mighty23]

@d-healey I'm developing a plugin for volume control using a table, but this doesn't affect the issue discussed in the post. The other control the user has is on the tempo-synced frequency. I need a label because I might also expand the UI and use the label values to indicate each position transparently above the table dynamicaly. A Volume Shaper-like vst.

I've tried to correct the code without much success

// Get the reference to the label and knob in user interface
const var tempoLabel = Content.getComponent("tempoLabel");
const var tempoKnob = Content.getComponent("tempoKnob");

// Define the callback function for the knob control
inline function onTempoKnobControl(component, value)
{
    // Update the text of the label with the value of the knob
    tempoLabel.set("text", value); 
}

// Set the control callback for the knob
tempoKnob.setControlCallback(onTempoKnobControl);

[d.healey]

@Mighty23 If you have linked the knob to a module using processor/parameter ID (as indicated in your original post) then your callback won't fire.

[Mighty23]

@d-healey I can't understand what you're trying to tell me. In JUCE, I use labels to indicate the values of knobs (rotary sliders) without any issues, but I can't grasp the logic you're advising me to use.
(I think I'm more confused now than at the beginning of the post :grinning_face_with_sweat: )

I have linked the knob to a module using parameterID to control the Frequency, so I can't use a callback? How should I proceed then?

[Lindon]

@Mighty23 move the knob....

[Lindon]

@Mighty23 to have a callback fire you must set the proccessorId to blank

now you cna use a callback - to both set the laebel text AND set your back-end Frequency.....

what David is about to say...

[d.healey]

@Mighty23 said in Help with displaying knob value in a label:

I have linked the knob to a module using parameterID to control the Frequency, so I can't use a callback?

Correct.

Unlink the knob from processor/parameter ID and instead set the attribute you were trying to control from within the control callback.

Edit: What Lindon said.

[Mighty23]

@Lindon said in Help with displaying knob value in a label:

@Mighty23 move the knob....

If you're suggesting moving the knob to see the result displayed in the label, the answer is: no.

[Lindon]

@Mighty23 said in Help with displaying knob value in a label:

@Lindon said in Help with displaying knob value in a label:

@Mighty23 move the knob....

If you're suggesting moving the knob to see the result displayed in the label, the answer is: no.

read what we have said first...

[Lindon]

here... liker this:

const var Filter1 = Synth.getEffect("Filter1");

// Get the reference to the label and knob in user interface
const var tempoLabel = Content.getComponent("tempoLabel");
const var tempoKnob = Content.getComponent("tempoKnob");

// Set the control callback for the knob
tempoKnob.setControlCallback(onTempoKnobControl);

// Define the callback function for the knob control
inline function onTempoKnobControl(component, value)
{
    // Update the text of the label with the value of the knob
    tempoLabel.set("text", value); 
   // Update the freq
   Filter1.setAttribute(Filter1.Frequency, value);
}

[Mighty23]

I managed to display the usual knob value on the label, but since it's no longer linked to the processor ID, the two values range from 0 to 18.0 (this is quite-okay). Now I need to reconnect the knob with its corresponding backend.

<?xml version="1.0" encoding="UTF-8"?>

<Processor Type="LFO" ID="LFOModulator1" Bypassed="0" Intensity="1.0" Frequency="18.0"
           FadeIn="43.13000106811523" WaveformType="6.0" Legato="1.0" TempoSync="1.0"
           SmoothingTime="5.690000057220459" LoopEnabled="1.0" PhaseOffset="0.0"
           SyncToMasterClock="1.0" IgnoreNoteOn="0.0" CustomWaveform="24..........9C...vO...f+....9C...vO"
           StepData="64....f+....9C...3O...f+....9C...3O...f+....9C...3O...f+....9C...3O...f+....9C...3O...f+.">
  <EditorStates BodyShown="1" Visible="1" Solo="0"/>
  <ChildProcessors>
    <Processor Type="ModulatorChain" ID="LFO Intensity Mod" Bypassed="0" Intensity="1.0">
      <EditorStates BodyShown="1" Visible="1" Solo="0" Folded="1"/>
      <ChildProcessors/>
    </Processor>
    <Processor Type="ModulatorChain" ID="LFO Frequency Mod" Bypassed="0" Intensity="1.0">
      <EditorStates BodyShown="1" Visible="0" Solo="0" Folded="1"/>
      <ChildProcessors/>
    </Processor>
  </ChildProcessors>
</Processor>

[d.healey]

@Mighty23 Lindon shows how to do this in his last post. Filter1.setAttribute...etc

[Mighty23]

Ok, done. Many Thanks, We can mark it as "Solved"

[d.healey]

@Mighty23 said in Help with displaying knob value in a label:

We can mark it as "Solved"

Click this button and select Ask a question. Then click it again and select solved.