controlp5/examples/use/ControlP5extendController/ControlP5extendController.pde

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/**
* ControlP5 extending Controllers
*
* the following example shows how to extend the Controller class to
* create customizable Controllers. You can either extend the Controller class itself,
* or any class that extends Controller itself like the Slider, Button, DropdownList, etc.
*
* How to:
*
* 1) do a super call to the convenience constructor requiring
* 2 parameter (ControlP5 instance, name)
*
* 2) the Controller class has a set of empty methods that allow you to capture
* inputs from the mouse including
* onEnter(), onLeave(), onPress(), onRelease(), onClick(), onScroll(int), onDrag()
* These you can override and include functionality as needed.
*
* 3) use method getPointer() to return the local (relative)
* xy-coordinates of the controller
*
* 4) after instantiation custom controllers are treated the same
* as default controlP5 controllers.
*
* by Andreas Schlegel, 2012
* www.sojamo.de/libraries/controlp5
*
*/
import controlP5.*;
ControlP5 cp5;
PApplet p;
void setup() {
size(400, 400);
cp5 = new ControlP5(this);
// create 2 groups to show nesting of custom controllers and
//
Group g1 = cp5.addGroup("a").setPosition(0,100).setWidth(180);
Group g2 = cp5.addGroup("b").setPosition(0,10).setWidth(180);
g2.moveTo(g1);
// create 2 custom Controllers from class MyButton
// MyButton extends Controller and inherits all methods accordingly.
new MyButton(cp5, "b1").setPosition(0, 0).setSize(180, 200).moveTo(g2);
new MyButton(cp5, "b2").setPosition(205, 15).setSize(180, 200);
}
void draw() {
background(0);
}
// b1 will be called from Controller b1
public void b1(float theValue) {
println("yay button "+theValue);
}
public void controlEvent(ControlEvent theEvent) {
println("controlEvent : "+theEvent);
}
// Create a custom Controller, please not that
// MyButton extends Controller<MyButton>, <MyButton>
// is an indicator for the super class about the type of
// custom controller to be created.
class MyButton extends Controller<MyButton> {
int current = 0xffff0000;
float a = 128;
float na;
int y;
// use the convenience constructor of super class Controller
// MyButton will automatically registered and move to the
// default controlP5 tab.
MyButton(ControlP5 cp5, String theName) {
super(cp5, theName);
// replace the default view with a custom view.
setView(new ControllerView() {
public void display(PGraphics p, Object b) {
// draw button background
na += (a-na) * 0.1;
p.fill(current,na);
p.rect(0, 0, getWidth(), getHeight());
// draw horizontal line which can be moved on the x-axis
// using the scroll wheel.
p.fill(0,255,0);
p.rect(0,y,width,10);
// draw the custom label
p.fill(128);
translate(0,getHeight()+14);
p.text(getName(),0,0);
p.text(getName(),0,0);
}
}
);
}
// override various input methods for mouse input control
void onEnter() {
cursor(HAND);
println("enter");
a = 255;
}
void onScroll(int n) {
println("scrolling");
y -= n;
y = constrain(y,0,getHeight()-10);
}
void onPress() {
println("press");
current = 0xffffff00;
}
void onClick() {
Pointer p1 = getPointer();
println("clicked at "+p1.x()+", "+p1.y());
current = 0xffffff00;
setValue(y);
}
void onRelease() {
println("release");
current = 0xffffffff;
}
void onMove() {
println("moving "+this+" "+_myControlWindow.getMouseOverList());
}
void onDrag() {
current = 0xff0000ff;
Pointer p1 = getPointer();
float dif = dist(p1.px(),p1.py(),p1.x(),p1.y());
println("dragging at "+p1.x()+", "+p1.y()+" "+dif);
}
void onReleaseOutside() {
onLeave();
}
void onLeave() {
println("leave");
cursor(ARROW);
a = 128;
}
}