PDF to bytes() problem

Programming Questions

robbby

in Programming Questions • 3 years ago

I'm using the PDF to Bytes code discussed here: PDF to bytes(); http://processing.org/discourse/yabb2/YaBB.pl?num=1237962559 I'm actually using the original source...without changes, on Processing 1.2.1, also tried on 1.1. I'm getting an error:
Cannot cast from PGraphics to inMemoryPGraphicsPDF.
The code was developed in an older version. What changed and how can I change the code to work in the newer versions?

Replies(1)

PhiLho

Re: PDF to bytes() problem

3 years ago

I haven't analyzed what went wrong... because Processing authors implemented the suggestions I made in the thread you mention.
So the InMemoryPGraphicsPDF became trivially simple:

import java.io.*;
import processing.core.*;
import processing.pdf.*;
// New version, taking advantage of the new PGraphicsPDF implementing my previous suggestions!
public class InMemoryPGraphicsPDF extends PGraphicsPDF
{
@Override
protected void allocate() // Called by PGraphics in setSize()
{
output = new ByteArrayOutputStream(16384);
}
public byte[] getBytes()
{
return ((ByteArrayOutputStream) output).toByteArray();
}
}

No more need to use the same package, possibility to use the output protected variable, thus no need to override beginDraw().
Nice!

Top Reply