ControlP5 and Group

runnerway

in Contributed Library Questions • 1 year ago

I'm looking at this example for dev's site

              
               /**
* ControlP5 Group
*
*
* find a list of public methods available for the Group Controller
* at the bottom of this sketch.
*
* by Andreas Schlegel, 2012
* www.sojamo.de/libraries/controlp5
*
*/


import controlP5.*;

ControlP5 cp5;

void setup() {  
  size(700,400);

  cp5 = new ControlP5(this);
  
  Group g1 = cp5.addGroup("g1")
                .setPosition(100,100)
                .setBackgroundHeight(100)
                .setBackgroundColor(color(255,50))
                ;
                     
  cp5.addBang("A-1")
     .setPosition(10,20)
     .setSize(80,20)
     .setGroup(g1)
     ;
          
  cp5.addBang("A-2")
     .setPosition(10,60)
     .setSize(80,20)
     .setGroup(g1)
     ;
     
  
  Group g2 = cp5.addGroup("g2")
                .setPosition(300,100)
                .setWidth(300)
                .activateEvent(true)
                .setBackgroundColor(color(255,80))
                .setBackgroundHeight(100)
                .setLabel("Hello World.")
                ;
  
  cp5.addSlider("S-1")
     .setPosition(80,10)
     .setSize(180,9)
     .setGroup(g2)
     ;
     
  cp5.addSlider("S-2")
     .setPosition(80,20)
     .setSize(180,9)
     .setGroup(g2)
     ;
     
  cp5.addRadioButton("radio")
     .setPosition(10,10)
     .setSize(20,9)
     .addItem("black",0)
     .addItem("red",1)
     .addItem("green",2)
     .addItem("blue",3)
     .addItem("grey",4)
     .setGroup(g2)
     ;
}


void draw() {
  background(0);
}


void controlEvent(ControlEvent theEvent) {
  if(theEvent.isGroup()) {
    println("got an event from group "
            +theEvent.group().name()
            +", isOpen? "+theEvent.group().isOpen()
            );
            
  } else if (theEvent.isController()){
    println("got something from a controller "
            +theEvent.controller().name()
            );
  }
}


void keyPressed() {
  if(key==' ') {
    cp5.group("g1").remove();
  }
}

theEvent is a ControlEvent object. But in JavaDoc documentation http://www.sojamo.de/libraries/controlP5/reference/index.html i cannot see any group() function..where is it? What about the error i see when running this example?

Thanks :D

Replies(4)

amnon.owed

In the javadocs for the ControlEvent class, see here.

When reporting errors it's smart to actually describe the error. Here I suppose you mean when you press space twice, you get a NPE. There should be a null check in there. This is indeed a small error in the example. I will report it, so it can be fixed for the next release.

You can use this code instead:

void keyPressed() {
if(key==' ') {
if (cp5.group("g1") != null) {
cp5.group("g1").remove();
}
}
}

runnerway

Re: ControlP5 and Group

1 year ago

I have a lot of problem

This is my code:

import controlP5.*;
//Array Studenti
ArrayList studenti;
ArrayList classi;
ControlP5 cp5;
Button b1;
Button b2;
Button b3;
Button b4;
ListBox l1;
ListBox l2;
Textfield t1;
void setup() {
size(600, 600);
background(#7CC5C0);
cp5 = new ControlP5(this);
Group g1 = cp5.addGroup("g1");
b1 = cp5.addButton("Avvia Sistema").setSize(100, 50)
.setPosition(10, 10)
.setSwitch(false)
.setId(1)
.setGroup(g1);
b2 = cp5.addButton("Ferma Sistema").setSize(100, 50)
.setPosition(10, 70)
.setSwitch(false)
.setId(2)
.setGroup(g1);
b3 = cp5.addButton("Salva").setSize(100, 50)
.setPosition(10, 130)
.setSwitch(false)
.setId(3);
b4 = cp5.addButton("Aggiungi Studente").setSize(100, 50)
.setPosition(10, 300)
.setSwitch(false)
.setId(4);
l1 = cp5.addListBox("Studenti").setSize(100, 50)
.setPosition(130, 10);
l2 = cp5.addListBox("Classe").setSize(100, 50)
.setPosition(10, 440);
t1 = cp5.addTextfield("Nome da Aggiungere").setSize(100, 50)
.setPosition(10, 360);
quad(10, 190, 110, 190, 110, 290, 10, 290);
l2.addItem("1A", 1);
}
void draw() {
}
void controlEvent(ControlEvent theEvent) {
theEvent.getGroup();
switch(theEvent.getController().getId()){
case 1:
fill(#29F207);
quad(10, 190, 110, 190, 110, 290, 10, 290);
break;
case 2:
fill(#BF0019);
quad(10, 190, 110, 190, 110, 290, 10, 290);
break;
case 5:
}

I know tha line 60 doesn't do nothing, but i want to retrieve the name of the controller's group who trigger the method.

But i cannot do "getGroup()"..because when i press a button:

ControlP5 0.7.2 infos, comments, questions at http://www.sojamo.de/libraries/controlP5

26-mag-2012 15.13.15 controlP5.ControlBroadcaster printMethodError

GRAVE: An error occured while forwarding a Controller event, please check your code at controlEvent

java.lang.reflect.InvocationTargetException

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at controlP5.ControlBroadcaster.invokeMethod(Unknown Source)

at controlP5.ControlBroadcaster.broadcast(Unknown Source)

at controlP5.Controller.broadcast(Unknown Source)

at controlP5.Button.setValue(Unknown Source)

at controlP5.Button.activate(Unknown Source)

at controlP5.Button.mouseReleased(Unknown Source)

at controlP5.Controller.setMousePressed(Unknown Source)

at controlP5.ControllerGroup.setMousePressed(Unknown Source)

at controlP5.ControllerGroup.setMousePressed(Unknown Source)

at controlP5.ControlWindow.mouseReleasedEvent(Unknown Source)

at controlP5.ControlWindow.mouseEvent(Unknown Source)

at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at processing.core.PApplet$RegisteredMethods.handle(Unknown Source)

at processing.core.PApplet.handleMouseEvent(Unknown Source)

at processing.core.PApplet.dequeueMouseEvents(Unknown Source)

at processing.core.PApplet.handleDraw(Unknown Source)

at processing.core.PGraphics.requestDraw(Unknown Source)

at processing.core.PApplet.run(Unknown Source)

at java.lang.Thread.run(Thread.java:662)

Caused by: java.lang.ClassCastException: controlP5.Button cannot be cast to controlP5.ControlGroup

at controlP5.ControlEvent.getGroup(Unknown Source)

at sketch_may25a.controlEvent(sketch_may25a.java:79)

... 25 more

Where am i wrong?

I want to know the group wich trigger and do something in consequences

amnon.owed

Re: ControlP5 and Group

1 year ago

There is a difference between controllers and controllergroups. Here you place several controllers in a controllergroup. When you press a controller (whether it is in a group or not) it will be the controller who sends an event. When you press a controller, the group sends nothing. Therefore if you want to get the name of the group that the controller is in, you have to do it indirectly via the incoming controller event. To make a long story short, instead of theEvent.getGroup(); use the following line to print the name of the parent group to the console:

println(theEvent.getController().getParent().getName());

runnerway

Re: ControlP5 and Group

1 year ago

So i was asking the Group of ControllerEvent?..Wich obiosvly wasn't in any group..Right?..Thanks for your reply :D I start to understand all :D

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