B4J Library PDF Creator and viewer

spsp · Jun 14, 2020

Hello,

Here are 3 classes :
- PdfCreator : create PDF
- PDFViewer : render PDF
- clsFormPDF : form to preview PDF (Page navigation, Zoom, Print, Save)

PdfCreator and PDFViewer wraps PDFBox
You have to download pdfbox-app-2.0.20.jar and copy it in the additional folder
You have to download icu4j-67_1.jar and copy it in the additional folder for right to left and connected arabic characters

B4X:

    #AdditionalJar: pdfbox-app-2.0.20.jar
    #AdditionalJar: icu4j-67_1.jar

For right to left and connected arabic characters, you need to uses the "bidi" method to buld your string

B4X:

    s=pdfcreator.bidi("صباحا")

The zip contains a small project which show how to create PDF and preview them

The fist is very simple, just few lines of text
The second is a long list with image, table, page footer, text color, background color....
The third use differents standard fonts and load a font from a file and display arabic characters

To create a PDF :

Create an instance of pdfCreator and initialize it
Create page
Create content
Write on the content (text, image, rect)
Close content
Add page to PDF
repeat 2 to 6
write PDF to stream or file

spsp

DonManfred · Aug 21, 2020

MarcTG said:
Can you create a pdf from a B4J layouts the same way it is done with JavaFX8

This wrapper is able to create PDF Acroforms (and more)

PDFBox (beta). Editing PDF AcroForm Fieldvalues, creating PDFs with new AcroForm

This is a partial wrap for Apache PDFBox. In this early stage i am focusing on manipulating PDF AcroForms and building new PDF with AcroForm. It is also possible to create some javascript which can run when you open the PDF on acrobat. The Examplecode and the needed Objects i got my...

www.b4x.com

TomDuncan · Nov 29, 2021

Can this be used to print not only lines of text but
Multiple lines with CRLF separated fields.
Tom

TomDuncan · Nov 29, 2021

Did a bit of work myself and came with this.

b4j:

'draw multline
public Sub drawMultiText(acontent As JavaObject,afont As JavaObject,asize As Float,aleft As Float,atop As Float,aLine As Float,atext() As String) As Float
    For i = 0 To atext.Length-1
        Dim txt As String = atext(i)
        drawText(acontent,afont,asize,aleft,atop,txt)
        atop = atop - aLine
    Next
    Return atop
End Sub

bleber · Jan 3, 2023

Any example to open an existent pdf?

spsp · Jan 3, 2023

bleber said:
Any example to open an existent pdf?

Hi, this library can't open existing PDF.

But the PDFBox which is used behind contains such methods. You have to look in that direction.

spsp

B4J Library PDF Creator and viewer

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B4J Library PDF Creator and viewer

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DonManfred

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PDFBox (beta). Editing PDF AcroForm Fieldvalues, creating PDFs with new AcroForm

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