[PDFBOX-5253] Create PDImmutableRectangle class for fixed sizes

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.24
• Fix Version/s: 3.0.0 PDFBox
• Component/s: PDModel
• External issue URL: https://github.com/apache/pdfbox/pull/107#issuecomment-890458381
• Assignee: Tilman Hausherr
• Reporter: Tilman Hausherr
• Created: 07/Aug/21 11:49
• Updated: 18/Aug/23 05:46
• Resolved: 07/Aug/21 12:52

Description

As suggested by valerybokov in PR 107.

It prevents a theoretical problem, i.e. that a developer assigns a paper size (e.g. PDRectangle.A4) to a page and then modifies the rectangle of this page for some reason. This would also modify all further uses of this paper size.