LazBarcodes

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General

lazbarcodes demo.png

About

LazBarcodes is a set of controls to create 1D and 2D barcodes. The backend engine is a port of Zint at sourceforge. Some units were heavily refactored to obtain a more Pascal-like code.

The library supports the generation of 1D and 2D barcodes:

  • 1D barcodes: Code-11, Code-128, Channel code, EAN-128, several 2-of-5 variants, several 3-of-9 variants, EAN, UPC, Plessey, MSI/Plessey, Telepen, medical/pharmaceutical codes (CodaBar, Code-32, Pharma one-track, Pharma two-track, PZN), postal codes (Australian post, Japanese post, Korean Post, Deutsche Post IdentCode and LeitCode, Dutch KIX, Planet, PostNet, Royal Mail RM4SCC)
  • Stacked barcodes: PDF417, compact PDF417, MicroPDF417
  • 2D barcodes: QR, MicroQR, Aztec, Aztec Rune, Data Matrix, Maxicode

Author

2011 - Jose Mejuto

License

BSD 3 as it is being inherited from the zint source code.

Dependencies / System Requirements

  • None


Getting LazBarcodes

The download contains the packages lazbarcodes and lazbarcodes_runtimeonly. The first one gives you visual components of the above barcodes and the second can be used just to access the ported zint code for advanced barcode generation.

Development version

The latest source code can be found on Lazarus-CCR. Use SVN to load the source files, or download the "Snapshot" by clicking on the corresponding button of the sourceforge site and unzip it to some directory. For installation go to "Package" > "Load package file (*.lpk)", navigate to the folder with the downloaded sources and load the fole lazbarcodes_runtimeonly.lpk. Then load the package lazbarcodes.lpk. Click "Use" > "Install", and confirm the question to rebuild the IDE. After some time the IDE restarts, and you find the barcodes in the "LazBarcodes" tab of the component palette.

Release version

Occasionally a release version is prepared and made available for easy installation by means of the Online-Package-Manager in the Lazarus IDE. Open "Package" > "Online package manager", check the item "LazBarcodes" in the list and click "Install". Again, confirm the question to rebuild the IDE. When the IDE restarts after some time you find the barcodes in the "LazBarcodes" tab of the component palette.

Change Log

  • v2.0.0: Added a lot of 1D barcodes
  • v1.0.3: Internally used units renamed to avoid naming conflict with CodeTyphon package PL_APE.
  • v1.0.2: Change of license from GPL to BSD
  • Initial development.

Documentation

General

The components installed by the LazBarcodes package descent from TGraphicControl and thus inherit fundamental control properties such as Width, Height, AutoSize, etc. They share a variety of other properties and methods; some properties, however, are not published fwhen they are not appropriate for the current barcode type.

Properties

  • Text: TCaption - Text to be encoded as a barcode. Note that, depending on the barcode type, there exist limitations on allowed text length and allowed characters.
  • ShowHumanReadableText: Boolean - Displays the encoded text underneath the barcode symbol. Note that the encoding algorithm may add check sum or additional characters to the input text.
  • BarcodeType - Some barcode components can be modified to create various symbologies by selecting the corresponding value in this (type-dependent) enumeration.
  • Scale: Integer - Horizontal scaling factor of the barcode determining the width of the smallest feature (bar or space) in pixels. Scale=0 tries to select an internal scale value such that the barcode fills the control's width as much as possible. Note that this scaling factor applies to all bars and spaces and therefore, increasing Scale does not increase the barcode with gradually but by more or less large steps.
  • SymbolHeight: Integer - Similar to Scale, but refers now to the vertical direction. Again, SymbolHeight=0 fills adjusts the internal symbol height to fill the height
  • MinSymbolHeight: Integer - Prevents the symbol to become too small.
  • RecommendedSymbolSize: Boolean - If true, overrides the Scale and SymbolHeight settings so that the size of the symbol is as close as possible to its specification.
  • AutoSize: Boolean - inherited standard property. When true, Width and Height are selected such that the current size of the barcode is enclosed. Note that AutoSize=true is ignored when Scale=0 or SymbolHeight=0.
  • Margin: Integer - Amount of empty pixels added around the symbol
  • WhitespaceWidth: Integer - Amount of empty pixels added to the left and right of some symbologies to enhance readability of barcode scanners.
  • BearerBarMode: TBearerBarMode = (bbmNone, bbmBearerBars, bbmBox) - adds horizontal bars above and below the barcode (bbmBearerBars) or a box around the barcode (bbmBox). The thickness of the bars and the box border is given by the Margin multiplied by the currently used internal Scale parameter.
  • ForegroundColor: TColor - Color used to draw the bars
  • BackgroundColor: TColor - Color used to draw the background of the barcode (spaces, margin and text area).

Methods

  • CopyToClipboard - Copies the barcode to the clipboard as a bitmap
  • SaveToFile(const AFileName: String; AImageClass: TFPImageBitmapClass) - Saves the barcode as a graphic image of the specified class to file.
  • SaveToStream(const AStream: TStream; AImageClass: TFPImageBitmapClass) - Saves the barcode as a graphic image of the specified class to a stream.
  • SaveToEPSFile(const AFileName: String) - Saves the barcode as EPS file
  • SaveToEPSStream(const AStream: TStream) - Saves the barcode in EPS format as stream.
  • SaveToSVGFile(const AFileName: String) - Saves the barcode in SVG format to file
  • SaveToSVGStream(const AStream: TStream) - Saves the barcode in SVG format to a stream
  • ErrorString: String - In case of an error, this read-only property contains a message why the Text could not be encoded correctly.

Components

1D codes

Component BarcodeType Name Application Allowed chars Text length Reference
TBarcode2of5
tbarcode2of5.png
bctCode25Standard Standard 2-of-5, or
Matrix 2-of-5
Warehouse sorting
photo finishing
airline ticket marking
'0'..'9' up to 80 https://en.wikipedia.org/wiki/Matrix_2_of_5
bctCode25DataLogic DataLogic 2-of-5 Processing and sorting of mail for the Chinese Postal Service '0'..'9' up to 80 https://en.wikipedia.org/wiki/Matrix_2_of_5
bctCode25IATA IATA 2-of-5 Airline cargo '0'..'9' up to 45 https://en.wikipedia.org/wiki/Industrial_2_of_5#IATA_2_of_5
bctCode25Industrial Industrial 2-of-5 Cardboard printing
photo developing envelopes
warehouse sorting systems
'0'..'9' up to 45 https://en.wikipedia.org/wiki/Industrial_2_of_5
bctCode25Interleaved Interleaved 2-of-5 135 film
cartons of some products
'0'..'9' up to 89 https://en.wikipedia.org/wiki/Interleaved_2_of_5
bctITF14 ITF-14 Packaging levels of a product '0'..'9' up to 13 https://en.wikipedia.org/wiki/ITF-14
TBarcode3of9
tbarcode3of9.png
bctCode39
bctLOGMARS
Code 3-of-9 (C39)
LOGMARS
Name badges, inventory and
industrial applications
LOGMARS: different bar widths
'0'..'9', 'A'..'Z', ' ',
'–', '.', '$', '/', '+', '%'
up to 74 https://en.wikipedia.org/wiki/Code_39
bctCode39Ext Extended Code 3-of-9
(C39ext)
Name badges, inventory and
industrial applications
#0..#127 up to 74 https://en.wikipedia.org/wiki/Code_39#Full_ASCII_Code_39
bctCode93 Code-93 Canada post like C39 up to 107 https://en.wikipedia.org/wiki/Code_93
TBarcodeC11
tbarcodec11.png
Code-11 Telecommunication '0'..'9', '-' up to 121 https://en.wikipedia.org/wiki/Code_11
TBarcodeC128
tbarcodec128.png
bctC128 Code-128 Industrial applications #0..#127 up to 160 https://en.wikipedia.org/wiki/Code_128
bctEAN128 EAN-128, or
GS1-128
Industrial applications #0..#127 Depending on "Application identifier"
to be given in square parenthesis
https://en.wikipedia.org/wiki/GS1-128]
TBarcodeChannelCode
tbarcodechannelcode.png
Channel Code high densitiy codes '0'..'9' up to 7 https://barcodeguide.seagullscientific.com/Content/Symbologies/Channel_Code.htm
TBarcodeEAN
tbarcodeean.png
bctEAN EAN-8, EAN-13 Article numbers '0'..'9'
'+' for addon code
up to 19 https://en.wikipedia.org/wiki/International_Article_Number]
bctEAN14 EAN-14 Trading goods '0'..'9' up to 13 https://www.barcodestalk.com/ean14
bctISBN ISBN Books '0'..'9', 'X'
'+' for addon code
9, 10 or 13 https://en.wikipedia.org/wiki/International_Standard_Book_Number
bctNVE18 NVE-18 Shipping and storage '0'..'9' up to 25
bctUPCA UPC/A Trade items '0'..'9'
'+' for addon code
up to 10
plus 2 check digits
https://en.wikipedia.org/wiki/Universal_Product_Code
bctUPCE UPC/E Trade items
(more compact than UPC/A)
'0'..'9'
'+' for addon code
up to 7 https://en.wikipedia.org/wiki/Universal_Product_Code#UPC-E
TBarcodeMedical
tbarcodemedical.png
bctCodabar Codabar Blood identification '0'..'9', '-', '$', ':', '/', '.', '+', 'A', 'B', 'C', 'D' up to 60 https://en.wikipedia.org/wiki/Codabar
bctCode32 Code 32 (Italian PHARMACODE) Pharmaceutical products in Italy '0'..'9' up to 8 https://barcodeguide.seagullscientific.com/Content/Symbologies/Code_32.htm
bctPharmaOne Pharmacode One-Track Packaging of pharmaceutical products '0'..'9' up to 6 https://barcode-test.com/301/what-is-pharmacode/
bctPharmaTwo Pharmacode Two-Track Packaging of pharmaceutical products '0'..'9' up to 8 https://barcodeguide.seagullscientific.com/Content/Symbologies/TwoTrackPharmacode.htm
bctPZN7 Pharmazentralnummer (PZN) Identification of pharmaceutical products (Germany, Austria) '0'..'9' 7 (6 by user + 1 auto-generated check digit) https://barcodeguide.seagullscientific.com/Content/Symbologies/PZN.htm
bctPZN8 8 (7 by user + 1 auto-generated check digit)
TBarcodePlessey
tbarcodeplessey.png
bctPlessey Plessey Shelf tags in retail stores '0'..'9', 'A'..'F' up to 65 https://en.wikipedia.org/wiki/Plessey_Code
bctMSIPlessey MSI/Plessey '0'..'9' depending on checkdigits
(see CheckChar property below)
https://en.wikipedia.org/wiki/MSI_Barcode
TBarcodePostal
tbarcodepostal.png
bctAustraliaPostCustomer Australia Post Standard Customer Barcode Postal code and automatic mail sorting in Australia '0'..'9', 'A'..'Z', 'a'..'z', space and hash ('#') 8, 13, 16, 18, or 23 http://www.neodynamic.com/Products/Help/BarcodeWPF3.0/barcodes/AustraliaPost.htm
http://fileformats.archiveteam.org/wiki/Australia_Post_standard_customer_barcode
bctAustraliaPostReplyPaid Australia Post Reply Paid '0'..'9' 8
bctAustraliaPostRoute Australia Post Routing '0'..'9' 8
bctAustraliaPostRedirect Australia Post Redirection '0'..'9' 8
bctDAFT DAFT Code Generic system of transcribing 4-state barcodes where the data encoding is provided by an external program. 'D': Descender
'A': Ascender
'F': Full height
'T': Tracker (short bar)
up to 50 https://www.neodynamic.com/barcodes/DAFT-4-state-Barcode.aspx
bctDeutschePostIdentCode Deutsche Post Identcode Mail routing in Germany '0'..'9' (up to) 11 digits https://barcodeguide.seagullscientific.com/Content/Symbologies/Identcode.htm
bctDeutschePostLeitCode Deutsche Post Leitcode Specifies destination for mail in Germany '0'..'9' (up to) 14 digits https://barcodeguide.seagullscientific.com/Content/Symbologies/Leitcode.htm
bctFIM FIM (Facing Identification Mark) Automatic facing, or orientation, of the mail piece for cancellation 'A'..'D', 'a'..'d' 1 https://en.wikipedia.org/wiki/Facing_Identification_Mark
bctJapanPost Japanese Post 4-State Customer Code Encodes addresses on mail for faster automatic processing in Japan '0'..'9', 'A'..'Z', '-' https://barcodeguide.seagullscientific.com/Content/Symbologies/Japanese_Postal.htm
bctKix Dutch KIX 4-State Customer Code Automatic processing of bulk mail in the Netherlands '0'..'9', 'A'..'Z' up to 18 chars https://barcodeguide.seagullscientific.com/Content/Symbologies/KIX_4_State_Customer_Code.htm
bctKoreaPost Korean Postal Authority Code Automatic sorting of mail in Korea '0'..'9' up to 6 digits https://barcodeguide.seagullscientific.com/Content/Symbologies/Korea_Post.htm
bctPlanet USPS PLANET (Postal Alpha Numeric Encoding Technique) Automatic identification, sorting, and tracking of pieces of mail in the U.S. '0'..'9' up to 38 https://barcodeguide.seagullscientific.com/Content/Symbologies/USPS_PLANET.htm
bctPostNet USPS POSTNET (Postal Numeric Encoding Technique) Sorting of business reply and courtesy reply mail in the U.S. '0'..'9' up to 38 https://en.wikipedia.org/wiki/POSTNET
bctRM4SCC RM4SCC (Royal Mail 4-State Customer Code) Mail service in United Kingdom '0'..'9','A'..'Z' up to 120 https://en.wikipedia.org/wiki/RM4SCC
TBarcodeTelepen
tbarcodetelepen.png
bctTelepen Telepen Alpha University and other academic libraries in the UK #0..#127 up to 30 https://en.wikipedia.org/wiki/Telepen
bctTelepenNum Telepen Numeric '0'..'9', 'X'
'X' must be at even character position.
up to 60

Stacked barcodes

Component BarcodeType Name Application Allowed chars Text length Reference
TBarcodePDF417
tbarcodepdf417.png
bctPDF417 PDF417 (Portable Data File) Government-issued identification cards (such as driver's licenses), airline boarding passes, postage stamps, package labels, etc. #0..#255 (ISO-8859-1) up to 1850 alphanumeric, or 2710 numeric characters, or 1108 bytes https://en.wikipedia.org/wiki/PDF417
bctPDF417trunc PDF417 truncated
Compact PDF417
https://www.neodynamic.com/Products/Help/BarcodeCF2.0/barcodes/CompactPdf417.htm
bctMicroPDF417 MicroPDF417 Designed to encode a moderate amount of data in a very small space up to 250 alphanumeric or 366 numeric characters https://barcodeguide.seagullscientific.com/Content/Symbologies/MicroPDF417.htm

2D codes

Component Name Application Allowed chars Text length Reference
TBarcodeAztec
tbarcodeaztec.png
Aztec Code Transport ticketing (Railroad, Airline). Governmental. #0..#255 interpreted as ISO-8859-1 up to 3823 numeric or 3067 alphabetic characters or 1914 bytes of data http://en.wikipedia.org/wiki/Aztec_Code
TBarcodeAztecRune
tbarcodeaztecrune.png
Aztec Rune special '0'..'9' up to 3 (8-bit value 0..255) http://en.wikipedia.org/wiki/Aztec_Code#Encoding
TBarcodeDatamatrix
tbarcodedatamatrix.png
Data Matrix Direct part marking UTF-8 up to 2335 alphanumeric characters, 3116 numbers, or 1556 bytes of binary data. https://en.wikipedia.org/wiki/Data_Matrix
TBarcodeQR
tbarcodeqr.png
QR Code Advertisement, web links, and many more UTF-8 up to 7089 numeric digits, 4296 alphanumeric characters or 2953 bytes of data https://en.wikipedia.org/wiki/QR_code
TBarcodeMicroQR
tbarcodemicroqr.png
Micro QR Code Like QR Code, preferred when less space is available UTF-8 up to 35 http://en.wikipedia.org/wiki/Qr_code#Micro_QR_code
TBarcodeMaxicode
File:tbarcodemaxicode.png
Maxicode Tracking and managing the shipment of packages #0..#255 interpreted as ISO-8859-1 about 90 characters (plus "primary message" needed in property Primary for mode 2 and 3) https://en.wikipedia.org/wiki/MaxiCode

Special properties of some components

  • TBarcodePlessey
    • CheckChar: TPlesseyCheckChar - determines the checksum digit(s) added to the MSI/Plessey symbol (used only when BarcodeType = bctMSIPlessey):
      • pcOneMod10: adds one check digit calculated by a mod 10 algorithm
      • pcTwoMod10: adds two check digits, both calculated by a mod 10 algorithm
      • pcOneMod11: adds one check digit calculated by a mod 11 algorithm
      • pcOneMod10Mod11: add two check digits, the first one calculated by a mod 10, the second one calculated by a mod 11 algorithm.
  • TBarcodeQR
    • ECCLevel: TBarcodeQR_ECCLevel - determines the level of error correction (used also by TBarcodeMicroQR):
      • eBarcodeQR_ECCLevel_Auto: selects one of the other options depending on data length
      • eBarcodeQR_ECCLevel_L: Error correction capacity: approx 20% of symbol, recovery capacity: approx 7%
      • eBarcodeQR_ECCLevel_M: Error correction capacity: approx 37% of symbol, recovery capacity: approx 15%
      • eBarcodeQR_ECCLevel_Q: Error correction capacity: approx 55% of symbol, recovery capacity: approx 25%
      • eBarcodeQR_ECCLevel_H: Error correction capacity: approx 65% of symbol, recovery capacity: approx 30%
  • TBarcodeMaxicode
    • Mode: TBarcodeMaxicodeMode - message mode
      • mcmAuto: tries to determine the mode from the type of the data
      • mcmMode2: In addition to the Text ("secondary message") also a 15-digit "primary message" must be provided in the property Primary. It consists of 9 numerical digits for the US-domestic post-code (property PostCode: String), 3 numeric digits for the country code (ISO 3166, property CountryCode: Integer) and 3 numeric digits for the service code (property ServiceCode: Integer).
      • mcmMode3: In addition to the Text ("secondary message") also a 15-digit "primary message" must be provided in the property Primary. It consists of 6 alphanumeric digits for the international post-code (property PostCode: String), 3 numeric digits for the country code (ISO 3166, property CountryCode: Integer) and 3 numeric digits for the service code (property ServiceCode: Integer).
      • mcmMode4: No Primary needed.
      • mcmMode5: No Primary needed.
      • mcmMode6: No Primary needed.
    • Primary: String - see TBarcodeMaxicode.Mode
    • PostCode: String - see TBarcodeMaxicode.Mode
    • CountryCode: String - see TBarcodeMaxicode.Mode
    • ServiceCode: String - see TBarcodeMaxicode.Mode

Demo application

A demo project is contained in the LazBarcodes installation. It allows to generate barcode from all barcode types supported. Please note that - since the requirements on length and characters changes from type to type - sometimes error messages are displayed; in this case, click on the "Sample text" button to use a predefined sample text for the selected barcode type. A screenshot is displayed at the top of this page.

Final notes

If you need the generation of another barcode and it is present in Zint, please ask for it in the Lazarus forum or mailing lists.