Re: [WebERP-developers] Question about barcode field

[Pak R. <pak...@gm...>]

Thanks Rafael and Phil:

So, we'll be using stockid then. Our stockid is AAAANN-BB-CC and want to
use 28 mm labels (as we sell jewellery and labels should be really small).
Easily legible barcodes with 12 characters use more than 28 mm. If reduced
until 28 mm, then are not properly printed and afterwards read.

Regarding Phil's idea, I tried, but when the PDF is printed and the PDF
resolution and printer resolution don't match, the vertical lines get
wrong. So (as example) if PDF barcode is created at 200 dpi and printed on
a barcode printer of 300 dpi, 1 PDF vertical line of 1 point should be
printed as 1.5 points at the printer. Some printers will choose to print 1
point, some 2. Then the barcode read can't be read properly, as the
proportion between line widths is not correct.

So the "proper" way to do it, is to match PDF and printer resolutions (or
printer resolution being a multiple of PDF resolution). Following previous
example, if printer is 600 dpi, then every 1 PDF point gets printed as 3
printer points, and it works OK.

Main issue is: now, seems like barcodes are geneated at 72dpi and it's "the
mother of all messes". I will explore to print barcodes with TCPDF
directly, as there's a parameter $xres than (if I'm not wrong) can de used
to set the resolution of the barcode image.

I'm still on the learning curve, so probably there are some errors on my
point.

Regards,
Ricard

2015-09-28 22:19 GMT+08:00 Rafael Chacón <raf...@gm...>:

> Hi Ricard,
>
> I also use stockmaster.stockid=stockmaster.barcode (with 13 digits
> barcodes). I use two label sizes; the "for public label" is 50 x 100 mm
> (american 2 x 4 inches). I prefer to use 5 cm length barcode (for 13
> digits), but you can use a 3 cm length barcode (you can reduce the size of
> the barcode image and it still readable).
>
> Sorry, I use other software to print labels because I did not know this in
> webERP (I had no time to move from this other software to webERP, but I
> will do). Nicola Asuni's TCPDF has parameters for Width/Height of a
> single bar element in pixels (and put it in a cell + other elements like
> item name, etc.; you can preview it in HTML and then print in PDF --as
> generate a PDF from HTML--)
>
> The barcode reader is used to input the stock code
> in CounterSales.php/Item
> Code, SelectOrderItems.php?identifier=9999999999/OR Enter extract of the
> Stock Code:, etc. instead of type ("write by fingers").
>
> For me:
> + Pros: Everybody knows the stockmaster.stockid (except, obviously, the
> private barcodes --200 series--).
> - Cons: PDFPriceList.php sorts by "Item Code" instead of "Item
> Description" (and barcodes arr by manufacturer and by
> first-come-first-code).
>
> Best regards, Rafael.
>
>
> 2015-09-28 1:31 GMT-06:00 Pak Ricard <pak...@gm...>:
>
>> Hi all:
>>
>> On my struggle to print barcodes, etc... I face another problem. my
>> barcode field contains the same info as stockid (stockmaster.barcode =
>> stockmaster.stockid) and it's too long for the label :-(
>>
>> Question: Does webERP need that stockmaster.barcode = stockmaster.stockid
>> to use the barcode readers? Or webERP detects when a barcode reader is used
>> and selects the item by barcode field? Or dies it by stockid?
>>
>> Example: CounterSales.php does not read/use the field
>> stockmaster.barcode. How does it identify the items? by stockid?
>>
>> Completely lost about this.
>>
>>
>>
>> Regards,
>> Ricard
>>
>>
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