transfer_rotation_to_content and annotations

[kwang-yong-hyun]

Explanation

I'm trying to create an N-up function.

If there are vertically long pages in the pdf document, first rotate them 90 degrees and then use "merge_translated_page".

page.rotate(90)

"transfer_rotation_to_content" was applied to fix rotated pages.

page.transfer_rotation_to_content()

The angle of the content has been fixed, but the annotation has returned to its original angle.

There is something similar in "merge_translated_page".

new_page.merge_translated_page(page, margin_left ,paper_height - (margin_top + page_height))

I asked Chatgpt how to move annotations and found the answer.

annotations = page.get("/Annots")

if annotations:
for annotation in annotations:
annotation_obj = annotation.get_object()
rect = annotation_obj.get("/Rect")
if rect:
rect[0] = FloatObject(rect[0] +(margin_left))
rect[1] = FloatObject(rect[1] +paper_height - (margin_top + page_height))
rect[2] = FloatObject(rect[2] +(margin_left))
rect[3] = FloatObject(rect[3] +paper_height - (margin_top + page_height))

        annotation_obj.update({
            "/Rect": ArrayObject(rect)
        })

Looking at these things, I think that "pypdf" is fully capable of changing the location of annotations.

In the next update I hope that the annotations will also be moved along with the contents.

[stefan6419846]

This is a duplicate of #2592, thus I am going to close this issue in favor of the original report.