Getting ControlP5 Button isOn()

bassnharp

Getting ControlP5 Button isOn()

in Contributed Library Questions • 1 year ago

I can't seem to figure out how to get the status of a Button that is set as a switch. Line 47 gives me a function (isOn) doesn't exist error. I know it has something to do with the fact that the function is on the Button and not the Controller but I can't seem to figure out the syntax to access the isOn(). I was using Toggle instead of Button, and using getValue(), which was returning 0 or 1. In this example if I use getValue() I always get 0.0. Toggle works but I didn't like the image rollover behavior.

import controlP5.*;
ControlP5 cp5;
int myColor = color(255);
int c1,c2;
float n,n1;
void setup() {
size(400,400);
noStroke();
PImage[] imgs = {loadImage("button_a.png"),loadImage("button_b.png"),loadImage("button_c.png")};
cp5 = new ControlP5(this);
// create a new button with name 'buttonA'
cp5.addButton("colorA")
.setValue(0)
.setSwitch(true)
.setPosition(100,100)
.setImages(imgs)
.updateSize()
.setId(1);
;
}
void draw() {
background(myColor);
myColor = lerpColor(c1,c2,n);
n += (1-n)* 0.1;
}
public void controlEvent(ControlEvent theEvent) {
println(theEvent.getController().getName());
n = 0;
switch(theEvent.getController().getId()) {
case(1):
// do something
//if (cp5.controller("ColorA").isOn()) {
// do something
//}
break;
}
}

Replies(4)

amnon.owed

Re: Getting ControlP5 Button isOn()

1 year ago

As you said, the isOn() method is only in the Button class, not in the Controller class.

So you need to tell your computer explicitly that this controller is a Button, for example like this:

Adapted Code

import controlP5.*;
ControlP5 cp5;
void setup() {
size(400,400);
cp5 = new ControlP5(this);
cp5.addButton("colorA")
.setPosition(100,100)
.setId(1);
;
}
void draw() {
background(0);
}
public void controlEvent(ControlEvent theEvent) {
switch(theEvent.getController().getId()) {
case(1):
Button b = (Button) theEvent.getController();
if (b.isOn()) {
println("I'm ON! :D");
} else {
println("I'm OFF! :(");
}
break;
}
}

bassnharp

Re: Getting ControlP5 Button isOn()

1 year ago

Thanks much. I knew I was missing the concept, Button class vs. Controller class.

andreas.s..

Re: Getting ControlP5 Button isOn()

1 year ago

In case you do not want to use an id as identifier, you could use:

public void controlEvent(ControlEvent theEvent) {
if(theEvent.isAssignableFrom(Button.class)) {
Button b = (Button) theEvent.getController();
if (b.isOn()) {
println("I'm ON! :D");
} else {
println("I'm OFF! :(");
}
}
}

bassnharp

Re: Getting ControlP5 Button isOn()

1 year ago

OK then. Just to clarify for others, if not using id's and if you have more than one button, you would have to add the logic to identify the button by name then.

if (b.getName() == "colorA") {
// do something
}

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