Processing 1.0 - Processing Discourse - Control P5

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Index › Programming Questions & Help › Other Libraries › Control P5 - text use (input)

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Control P5 - text use (input) (Read 1472 times)

Tegan

Control P5 - text use (input)
May 21^st, 2009, 3:05am

I have been using this library but need to extend it in order for the user to add more text. I am trying to make an application that will use objects with 2D bar codes to trigger an different graphic "enviroments" in which users can type poems or short stories or songs and then saving them into XML - for a self documentatio exhbition in Yeoville Johanesburg.

I'm begining to think that inputing text longer than one line is not possible with processing? How can I extend the text field to take more than one line of text or is there any suggestion for anouther method?

feeling very stuck
thank you

tacitdynamite

Re: Control P5 - text use (input)
Reply #1 - May 21^st, 2009, 6:44am

hi tegan -
i too have ran into the problem of wanting an idiomatic text area in processing. controlp5 has a very nice textarea class for displaying multi-line data, but as far as i can see you are correct that controlp5 doesn't handle the mvc problems associated with interactive input into that textarea (cursor, up, down, delete, interactive word wrap). it's certainly not true that it's impossible in processing, though - i'm currently working on something like a console that will be able to do what you say. i suggest you make your own wrapper for the controlp5 class that handles keyboard input and appropriately updates the string through controlp5.textarea.setText( String s ). something like this:

Quote:

import controlP5.*;

ControlP5 controlP5;
Textarea myTextarea;
StringBuilder sb;

void setup() {
  size(400,400);
  frameRate(30);
  controlP5 = new ControlP5(this);
  myTextarea = controlP5.addTextarea(
     "label1",
     "type some text until it fills up the space",
     100,100,200,60);
  myTextarea.setColorForeground(0xffff0000);
  sb = new StringBuilder();
}

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

void keyPressed()
{
   sb.append( key );
   myTextarea.setText( sb.toString() );
}

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