1859926 - Page footers or headers get clipped in print-preview at certain window-sizes, CSS 'page-orientation' rotate-right or rotate-left

Status: NEW

(Core :: Print Preview, defect)

Description

[Daniel Holbert [:dholbert]]

STR:

1. Print-preview the attached testcase.
2. Look at the page footers (page number and timestamp).
3. Resize your window to be wider or skinnier (so that the scale of the print-preview rendering changes)

ACTUAL RESULTS:
At certain window-sizes (particularly larger sizes for testcase 1), the footers are clipped entirely.

EXPECTED RESULTS:
No such clipping.

I'm using Nightly 120.0a1 (2023-10-18) (64-bit) on Ubuntu 22.04.

Notes:

• I think this issue only happens when page-orientation is used. Likely we're not taking the rotation into account when setting up our display lists, or something to that effect.
• It only seems to affect the footer-text. In my brief testing so far, e.g. in a modified testcase with content-that-fills-the-paper (e.g. just a giant border), the actual content doesn't get clipped.

Comment 1

[Daniel Holbert [:dholbert]]

Attachment: testcase 1

Comment 2

[Daniel Holbert [:dholbert]]

Attachment: testcase 2 (rotate-left instead of rotate-right)

Comment 3

[Daniel Holbert [:dholbert]]

Attachment: testcase 3: explicit page size, causes filename and timestamp to be partially clipped in small windows

The behavior changes if I specify an explicit page-size like in this third testcase. I'll attach some screenshots showing the odd behavior here (where the clipping changes in response to my window-resizing).

Comment 4

[Daniel Holbert [:dholbert]]

Attachment: screenshot of testcase 1

Here's a screenshot of testcase 1, with the footers partially (mostly) clipped. If my window is a bit skinnier than the window shown here, then there's no clipping; everything is fine. If my window is a bit wider, then the footer is entirely clipped.

Comment 5

[Daniel Holbert [:dholbert]]

Attachment: screenshot of testcase 3 with partially clipped header/footer

Comment 6

[Daniel Holbert [:dholbert]]

In testcase 3, the mitigation is the opposite from testcases 1-2: the issue goes away when I make my window wider, whereas it gets progressively-more-clipped as I make my window skinnier.

Comment 7

[Daniel Holbert [:dholbert]]

Also, my testcase 3 screenshot is shown using a physical printer as my destination; but that's not important -- this reproduces when I choose the Save-to-PDF print target as well.

Comment 8

[Daniel Holbert [:dholbert]]

This might be a manifestation of the same issue we're hitting in bug 1763246.