drawing a Barcode without a Barcode font
Matthias Rebbe
matthias_livecode_150811 at m-r-d.de
Fri Jul 20 07:31:42 EDT 2018
We tried here with iPhone and also with an USB scanner. Both devices scanned the code successfully.
I have just finished a program for shipment. It fetches customer and invoice data from the accounting software and creates then the shipment labels including a Code25i barcode and a QR code. The carrier is Trans-o-Flex. I need to send some sample labels to their IT department. They will check if the labels are readable by their scanners. But i am now confident, that this will work on their side also.
Thanks again.
Matthias
> Am 20.07.2018 um 11:31 schrieb Mike Bonner via use-livecode <use-livecode at lists.runrev.com>:
>
> Very cool! Does it actually produce a code that can be scanned?
>
> On Fri, Jul 20, 2018 at 3:25 AM Matthias Rebbe via use-livecode <
> use-livecode at lists.runrev.com> wrote:
>
>> Mike
>>
>> you´re awesome. That is already an almost complete solution to my
>> question. Never had expected that. Thank you very much.
>> I´ve made some little changes. One among of them is:
>> To have all the separate bars of the barcode in a group, i changed the
>> lines where the grc is cloned
>> to for example copy grc “narrowB” to grp “barcode2of5”
>>
>> Here´s now my code to convert the nNnNN…. string to Barcode
>>
>> local tLast
>> on mouseup
>> if there is a grp "barcode2of5" then delete grp "barcode2of5"
>> -- now change the width of the template graphics
>> put "2" into tNarrow
>> put "4" into tWide
>> set the width of grc "narrowC" to tNarrow
>> set the width of grc "narrowB" to tNarrow
>> set the width of grc "wideC" to tWide
>> set the width of grc "wideB" to tWide
>> put "0" into tHorAdjust -- allows to put a gap beween the separate bars.
>> put "60,286" into tBarTopLeft -- defines where the first bar is placed
>> put empty into tLast
>> put fld "2of5" into tChars -- the field with your wNnnW string
>> set the casesensitive to true -- to differentiate case of course
>> create grp "barcode2of5"
>> repeat for each char tChar in tChars
>> switch tChar
>> case "N"
>> -- checks the char, and clones the matching bar.
>> --if its the first time through, places it at astart location
>> -- then uses the id of the most recent bar forplacement
>> purposes
>> --clone grc "narrowB"
>> copy grc "narrowB" to grp "barcode2of5"
>> if tLast is empty then
>> set the topleft of the last grc to tBarTopLeft
>> else
>> set the topleft of the last grc to horAdjust(tHorAdjust)
>> end if
>> break
>> case "n"
>> --clone grc "narrowC"
>> copy grc "narrowC" to grp "barcode2of5"
>> if tLast is empty then
>> set the topleft of the last grc to tBarTopLeft
>> else
>> set the topleft of the last grc to horAdjust(tHorAdjust)
>> end if
>> break
>> case "W"
>> --clone grc "wideB"
>> copy grc "wideB" to grp "barcode2of5"
>> if tLast is empty then
>> set the topleft of the last grc to tBarTopLeft
>> else
>> set the topleft of the last grc to horAdjust(tHorAdjust)
>> end if
>> break
>> case "w"
>> --clone grc "widec"
>> copy grc "widec" to grp "barcode2of5"
>> if tLast is empty then
>> set the topleft of the last grc to tBarTopLeft
>> else
>> set the topleft of the last grc to horAdjust(tHorAdjust)
>> end if
>> break
>> end switch
>> put the short id of the last grc into tLast -- the id of the most
>> recently placed bar
>> end repeat
>> set the height of grp "barcode2of5" to 69
>> set the width of grp "barcode2of5" to 360
>> end mouseup
>>
>> --This function allows a horizontal adjustment of the single bars.
>> function horAdjust tHorAdjust
>> put the topright of grc id tLast into tTMP
>> set the itemdelimiter to ","
>> add tHorAdjust to item 1 of tTMP
>> return tTMP
>> end horAdjust
>>
>> Again, thank you very much for your help.
>>
>> Regards,
>>
>> Matthias
>>
>>
>>> Am 20.07.2018 um 01:01 schrieb Mike Bonner via use-livecode <
>> use-livecode at lists.runrev.com>:
>>>
>>> Not sure if it will work for your purpose, but as a test I created for
>>> graphic lines, 1 narrow black, 1 wider black, duplicated them and set the
>>> blendlevel of the copies so that they're transparent.
>>>
>>> Grcs are named narrowB, wideB, narrowC and wideC (b for black, c for
>> clear)
>>>
>>> Then used the following code (and your example string from above with the
>>> WWnNw stuff) to generate a barcode.
>>>
>>> on mouseup
>>> put empty into tLast
>>> put field 1 into tChars -- the field with your wNnnW string
>>> set the casesensitive to true -- to differentiate case of course
>>> repeat for each char tChar in tChars
>>> switch tChar
>>> case "N" -- checks the char, and clones the matching bar.
>>> --if its the first time through, places it at a
>>> start location
>>> -- then uses the id of the most recent bar for
>>> placement purposes
>>> clone grc "narrowB"
>>> if tLast is empty then
>>> set the topleft of the last grc to 10,50
>>> else
>>> set the topleft of the last grc to the topright of grc id
>>> tLast
>>> end if
>>> break
>>> case "n"
>>> clone grc "narrowC"
>>> if tLast is empty then
>>> set the topleft of the last grc to 10,50
>>> else
>>> set the topleft of the last grc to the topright of grc id
>>> tLast
>>> end if
>>> break
>>> case "W"
>>> clone grc "wideB"
>>> if tLast is empty then
>>> set the topleft of the last grc to 10,50
>>> else
>>> set the topleft of the last grc to the topright of grc id
>>> tLast
>>> end if
>>> break
>>> case "w"
>>> clone grc "widec"
>>> if tLast is empty then
>>> set the topleft of the last grc to 10,50
>>> else
>>> set the topleft of the last grc to the topright of grc id
>>> tLast
>>> end if
>>> break
>>>
>>> end switch
>>> put the short id of the last grc into tLast -- the id of the most
>>> recently placed bar
>>> end repeat
>>> end mouseup
>>>
>>> Spacing and line size might need to be tweaked, but it seems like this
>>> would be relatively straight forward.
>>>
>>> On Thu, Jul 19, 2018 at 4:30 PM Bob Sneidar via use-livecode <
>>> use-livecode at lists.runrev.com> wrote:
>>>
>>>> I think the trick will be drawing large graphics one at a time and
>>>> properly spaced at several times their finished size, perhaps off
>> screen,
>>>> then getting a snapshot of the result and scaling it down. Not sure how
>>>> picky the readers will be.
>>>>
>>>> Bob S
>>>>
>>>>
>>>>> On Jul 19, 2018, at 15:06 , Matthias Rebbe via use-livecode <
>>>> use-livecode at lists.runrev.com> wrote:
>>>>>
>>>>> Currently i am using a special 2of5i barcode font. The font .has only
>>>> four characters (bars) in its set.
>>>>> The code displays a
>>>>> narrow space (blank) bar when the character is n
>>>>> narrow black bar when N
>>>>> wide space when w
>>>>> wide black bar when W
>>>>
>>>>
>>>> _______________________________________________
>>>> use-livecode mailing list
>>>> use-livecode at lists.runrev.com
>>>> Please visit this url to subscribe, unsubscribe and manage your
>>>> subscription preferences:
>>>> http://lists.runrev.com/mailman/listinfo/use-livecode
>>>>
>>> _______________________________________________
>>> use-livecode mailing list
>>> use-livecode at lists.runrev.com
>>> Please visit this url to subscribe, unsubscribe and manage your
>> subscription preferences:
>>> http://lists.runrev.com/mailman/listinfo/use-livecode
>>
>>
>> _______________________________________________
>> use-livecode mailing list
>> use-livecode at lists.runrev.com
>> Please visit this url to subscribe, unsubscribe and manage your
>> subscription preferences:
>> http://lists.runrev.com/mailman/listinfo/use-livecode
> _______________________________________________
> use-livecode mailing list
> use-livecode at lists.runrev.com
> Please visit this url to subscribe, unsubscribe and manage your subscription preferences:
> http://lists.runrev.com/mailman/listinfo/use-livecode
More information about the use-livecode
mailing list