Skip to contents

Set a page's rotation

Source: R/mutation.R
pdf_page_set_rotation.Rd

Wraps FPDFPage_SetRotation. Allowed values are 0, 90, 180, 270 degrees (clockwise). The PDF spec restricts page rotation to multiples of 90; PDFium silently treats any other value as 0.

Usage

pdf_page_set_rotation(page, degrees, page_num = 1L)

Arguments

page

A pdfium_page from pdf_page_load(), or a pdfium_doc (in which case page_num selects the page).

degrees

Integer; one of 0, 90, 180, 270.

page_num

One-based page index. Only used when page is a pdfium_doc. Ignored otherwise.

Value

Invisibly returns the parent pdfium_doc so calls can be chained with |>.

Details

Polymorphic in page: accepts either an already-loaded pdfium_page from pdf_page_load() (with readwrite = TRUE on the parent doc) or a pdfium_doc plus page_num.

See also

pdf_page_rotation() for the read side.