iText create document with unequal page sizes

问题:

I want to create a pdf file using itext that has unequal page sizes. I have these two rectangles:

Rectangle one=new Rectangle(70,140);
 Rectangle two=new Rectangle(700,400);

and i am writing to the pdf like this :

Document document = new Document();
  PdfWriter writer=  PdfWriter.getInstance(document, new FileOutputStream(("MYpdf.pdf")));

when I create the document, I have the option to specify the page size , but I want different page sizes for different pages in my pdf. Is it possible to do that ?

Eg. The first page will have rectangle one as the page size, and the second page will have rectangle two as the page size.

回答1:

I've created an UnequalPages example for you that shows how it works:

Document document = new Document();
PdfWriter.getInstance(document, new FileOutputStream(dest));
Rectangle one = new Rectangle(70,140);
Rectangle two = new Rectangle(700,400);
document.setPageSize(one);
document.setMargins(2, 2, 2, 2);
document.open();
Paragraph p = new Paragraph("Hi");
document.add(p);
document.setPageSize(two);
document.setMargins(20, 20, 20, 20);
document.newPage();
document.add(p);
document.close();

It is important to change the page size (and margins) before the page is initialized. The first page is initialized when you open() the document, all following pages are initialized when a newPage() occurs. A new page can be triggered explicitly (using the newPage() method in your code) or implicitly (by iText, when a page was full and a new page is needed).