CODEWITHSUNDEEP
javaswingappletjframeprocessing
user2321978
user2321978

Reputation: 49

Creating a second applet(window) in processing

Hello guys i am trying to do a code where i can create a second applet in processing by passing on a sensible area.

the code works fine except for 1 thing.

when it passes over the sensible area it creates in a loop the same frame.

here is the code.

import javax.swing.JFrame;

PFrame f;
secondApplet s;

void setup() {
  size(600, 340);

}

void draw() {
  background(255, 0, 0);
  fill(255);
}     

void mousePressed(){

  PFrame f = new PFrame();
}


public class secondApplet extends PApplet {

  public void setup() {
    size(600, 900);
     noLoop();
  }
  public void draw() {
    fill(0);
    ellipse(400, 60, 20, 20);
  }
}

public class PFrame extends JFrame {
  public PFrame() {

    setBounds(0, 0, 600, 340);
    s = new secondApplet();
    add(s);
    s.init();
    println("birh");
    show();
  }
}

This code creates the second applet by just clicking in any region of the frame, but if you keep clicking it will create more frames of the same applet.

what i want is that once i click it creates only 1 frame and no more.

can you help me please? thanks ;)

Upvotes: 2

Views: 5117

Answers (2)

Ricardo Cacheira
Ricardo Cacheira

Reputation: 807

import javax.swing.JFrame;

PFrame f = null;
secondApplet s;

void setup() {
  size(600, 340);

}

void draw() {
  background(255, 0, 0);
  fill(255);
}     

void mousePressed(){

  if(f==null)f = new PFrame();
}


public class secondApplet extends PApplet {

  public void setup() {
    size(600, 900);
     noLoop();
  }
  public void draw() {
    fill(0);
    ellipse(400, 60, 20, 20);
  }
  /*
   * TODO: something like on Close set f to null, this is important if you need to 
   * open more secondapplet when click on button, and none secondapplet is open.
   */
}

public class PFrame extends JFrame {
  public PFrame() {

    setBounds(0, 0, 600, 340);
    s = new secondApplet();
    add(s);
    s.init();
    println("birh");
    show();
  }
}

Upvotes: 1

lealand
lealand

Reputation: 367

The code you posted won't compile, as you have no top-level encapsulating class declared, so I'm curious about why you say it works.

Regarding your issue, you have the field PFrame f declared at the top, but in mousePressed() you declare another one. This variable f is different from the first variable. To solve your problem, you probably want your code to look something like:

void mousePressed() {
  if (f == null) {
    f = new PFrame();
  }
}

This will allow you to create the new frame, but only once. I recommend you choose more descriptive variable names, though. Also, it should be SecondApplet, not secondApplet.

Upvotes: 1

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