HPDFBarcode Unit Reference

HPDFBarcode unit은 THPDFPage.DrawBarcode가 사용하는 barcode component와 low-level bar encoder helper를 노출합니다

직접 PDF page output에는 THPDFPage.DrawBarcode를 사용하고, VCL TCanvas에 렌더링할 때는 THPDFBarcode를 사용하며, drawing 전에 generated bar sequence가 필요한 application은 Simple* function을 사용하십시오

THPDFBarcode

THPDFBarcode는 configured barcode를 VCL canvas에 렌더링하는 TComponent descendant이며, 선택적으로 human-readable text label을 그릴 수 있습니다

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

Component는 layout, barcode type, checksum, colour, text-label, change notification setting을 published합니다

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`
`맨 위`, `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`, `CheckSum 메서드`	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`
`THPDFCheckSum 메서드`	`csmNone`, `csmModulo10`
`THPDFBarLineType`	`white`, `black`, `black_half`

Simple Bar Records

Simple encoder function은 TSimpleBarcodeBar record array인 TSimpleBarArray를 통해 generated bar를 반환합니다

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

Each function has the signature function Name(const Text: AnsiString; var Bars: TSimpleBarArray): Integer and returns the total generated bar width

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;

참조