HPDFBarcode Unit Reference

Enota HPDFBarcode izpostavlja komponento za črtne kode in nizkonivojske pomočnike za kodiranje črtic, ki jih uporablja THPDFPage.DrawBarcode

THPDFPage.DrawBarcode uporabite za neposreden izhod na stran PDF, THPDFBarcode uporabite pri izrisu na VCL TCanvas, funkcije Simple* pa uporabite, kadar aplikacija potrebuje ustvarjeno zaporedje črtic pred risanjem

THPDFBarcode

THPDFBarcode je potomec TComponent, ki izriše konfigurirano črtno kodo na platno VCL in lahko po potrebi nariše tudi človeku berljivo besedilno oznako

Member	Usage
`Assign`	Copies barcode configuration from another persistent object
`DrawBarcode`	Draws the bars for the configured barcode on the supplied `TCanvas`
`DrawText`	Draws the optional text label on the supplied `TCanvas`
`CanvasHeight`	Returns the rotated drawing height needed for the configured `Width`, `Height`, and `Angle`
`CanvasWidth`	Returns the rotated drawing width needed for the configured `Width`, `Height`, and `Angle`

Published Properties

Komponenta objavlja nastavitve postavitve, vrste črtne kode, kontrolne vsote, barve, besedilne oznake in obveščanja o spremembah

Property	Usage
`Height`, `Width`	Set the barcode drawing height and read or assign the calculated barcode width
`Text`	Supplies the barcode payload as an `AnsiString`
`Vrh`, `Left`	Set the canvas origin for the barcode output
`Modul`	Sets the base module width used when bars are painted
`Ratio`	Sets the wide-to-narrow bar ratio used by supported symbologies
`Typ`	Selects the barcode type by the ordinal value of `THPDFBarcodeType`
`Checksum`, `CheckSumMethod`	Enable checksum output and choose `csmNone` or `csmModulo10`
`Angle`	Rotates the rendered barcode
`ShowText`, `ShowTextFont`, `ShowTextPosition`	Control whether the readable text is drawn, which font is used, and where the label is placed
`Color`, `ColorBar`	Set the background colour and bar colour
`OnChange`	Receives a `TNotifyEvent` when a property setter changes barcode state

Barcode Types and Options

Type	Values
`THPDFBarcodeType`	`bcCode_2_5_interleaved`, `bcCode_2_5_industrial`, `bcCode_2_5_matrix`, `bcCode39`, `bcCode39Extended`, `bcCode128A`, `bcCode128B`, `bcCode128C`, `bcCode93`, `bcCode93Extended`, `bcCodeMSI`, `bcCodePostNet`, `bcCodeCodabar`, `bcCodeEAN8`, `bcCodeEAN13`, `bcCodeUPC_A`, `bcCodeUPC_E0`, `bcCodeUPC_E1`, `bcCodeUPC_Supp2`, `bcCodeUPC_Supp5`, `bcCodeEAN128A`, `bcCodeEAN128B`, `bcCodeEAN128C`
`THPDFBarcodeOption`	`bcoNone`, `bcoCode`, `bcoTyp`, `bcoBoth`
`THPDFShowTextPosition`	`stpTopLeft`, `stpTopRight`, `stpTopCenter`, `stpBottomLeft`, `stpBottomRight`, `stpBottomCenter`
`THPDFCheckSumMethod`	`csmNone`, `csmModulo10`
`THPDFBarLineType`	`white`, `black`, `black_half`

Simple Bar Records

Preproste kodirne funkcije vrnejo ustvarjene črtice prek TSimpleBarArray, polja zapisov TSimpleBarcodeBar

Record	Fields
`TSimpleBarcodeBar`	`Width` contains the module width contribution, and `Filled` identifies whether the segment is a printed bar
`TSimpleBarArray`	Dynamic array of `TSimpleBarcodeBar` values filled by the `Simple*` functions

Simple Encoder Functions

Vsaka funkcija ima podpis function Name(const Text: AnsiString; var Bars: TSimpleBarArray): Integer in vrne skupno ustvarjeno širino črtic

Group	Functions
Code 2/5	`SimpleCode25Interleaved`, `SimpleCode25Industrial`, `SimpleCode25Matrix`
Code 39 and Code 93	`SimpleCode39`, `SimpleCode39Extended`, `SimpleCode93`, `SimpleCode93Extended`
Code 128 and EAN-128	`SimpleCode128A`, `SimpleCode128B`, `SimpleCode128C`, `SimpleEAN128A`, `SimpleEAN128B`, `SimpleEAN128C`
Retail and postal	`SimpleEAN8`, `SimpleEAN13`, `SimpleUPC_A`, `SimpleUPC_E0`, `SimpleUPC_E1`, `SimpleUPC_Supp2`, `SimpleUPC_Supp5`, `SimplePostNet`
Other supported symbologies	`SimpleMSI`, `SimpleCodebar`

Example

var
  Bars: TSimpleBarArray;
  TotalWidth: Integer;
begin
  TotalWidth := SimpleCode128B('ABC-123', Bars);
end;

See also