encode in EAN 13 exemple

[Francois Wauquier]

I have not found any exemple of a EAN 13 barCode generation.
Tried with this:

Hashtable hintsTable = new Hashtable();

ByteMatrix byteMatrix = new MultiFormatWriter().encode(text,
BarcodeFormat.EAN_13, 113, 98, hintsTable);

File file = new File(text + ".gif");

MatrixToImageWriter.writeToFile(byteMatrix, "image/gif", file);


but it only generate an empty file (lenght of 0 bytes).

[Sean Owen]

There is no support for generating EAN barcodes at the moment.

[Francois Wauquier]

com.google.zxing.oned.EAN13Writer
is like dead code ?

[Sean Owen]

Hmm, no I'm just completely wrong. I didn't even know this existed or
had forgotten all about... been so long since I looked at this. I will
look into why this doesn't work, since it seems like it should.

[Sean Owen]

Oh, the problem is that you need to pass "gif", not "image/gif", for
the format. Weird that javax.imageio doesn't throw an exception.

But it looks like there is a smaller problem with the code, it
generates barcodes that are inverted -- white on black. I can fix
that.

On Nov 2, 3:16 pm, Francois Wauquier <wok...@gmail.com> wrote:

[Francois Wauquier]

OK

It now generates an image that looks like a barCode, but that cannot
be red.
Surely because of the black/white inversion you talked about.

[Sean Owen]

Right. Try the latest code from SVN now.

[Francois Wauquier]

With your last modif in svn:
http://code.google.com/p/zxing/source/diff?spec=svn1095&r=1095&format=side&path=/trunk/javase/src/com/google/zxing/client/j2se/MatrixToImageWriter.java

It works with png format.

ByteMatrix byteMatrix = new MultiFormatWriter().encode

(text,BarcodeFormat.EAN_13, 113, 98);
File file = new File(text + ".png");
MatrixToImageWriter.writeToFile(byteMatrix, "png", file);