HPDFBarcode Unit Reference

Jedinica HPDFBarcode izlaže komponentu za bar-kodove i pomoćne alate za enkodiranje traka niskog nivoa koje koristi THPDFPage.DrawBarcode

Koristite THPDFPage.DrawBarcode za direktan izlaz na PDF stranicu, koristite THPDFBarcode pri iscrtavanju na VCL TCanvas, a funkcije Simple* kada aplikaciji treba generisani niz traka pre crtanja

THPDFBarcode

THPDFBarcode je potomak TComponent klase koji prikazuje konfigurisan bar-kod na VCL platnu i po potrebi može da iscrta čitljivu tekstualnu oznaku

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`

Objavljena svojstva

Komponenta objavljuje podešavanja za raspored, tip bar-koda, kontrolnu sumu, boju, tekstualnu oznaku i obaveštenja o promenama

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

Tipovi i opcije bar-koda

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`

Jednostavni zapisi traka

Jednostavne funkcije enkodiranja vraćaju generisane trake kroz TSimpleBarArray, niz zapisa 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

Jednostavne funkcije enkodera

Svaka funkcija ima potpis function Name(const Text: AnsiString; var Bars: TSimpleBarArray): Integer i vraća ukupnu generisanu širinu trake

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;

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