Java OpenOffice UNO API: How to scale spreadsheet document?

I have an Excel document and I want to export it to PDF format. However, my document goes beyond A4 format area and I want to scale it before 开发者_如何转开发export.

Some body knows any solution of this problem?

1. How i can scale excel document before pdf export?
2. Does Open Office UNO api allows such operation as 'fit width'?

Have you tried selecting Open Office Calc -> Tools -> Options -> Open Office Calc -> General -> Use printer metrics for text formatting ?