https://bugs.documentfoundation.org/show_bug.cgi?id=166371
Bug ID: 166371
Summary: Properly implement ODF style:writing-mode for vertical
writing in table cells
Product: LibreOffice
Version: 25.8.0.0 alpha0+
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: enhancement
Priority: medium
Component: LibreOffice
Assignee: [email protected]
Reporter: [email protected]
Blocks: 94587, 162118
The formatting of a table cell is done by the element
<style:table-cell-properties> (17.18 ODF 1.4). That has the attribute
style:writing-mode (20.404.6 ODF 1.4) with values lr-tb, rl-tb, tb-rl, tb-lr,
sideways-rl, sideways-lr or page.
The implementation of this attribute is in a bad state. Problems are e.g.
- Cells in a spreadsheet do not use the style:writing-mode for East Asian
vertical writing. That would be style:writing-mode="tb-rl" or
style:writing-mode="tb-lr". But LO uses the attributes style:direction="ttb"
(20.263 ODF 1.4) together with style:glyph-orientation-vertical="auto" (20.297
ODF 1.4). This is a workaround, because it cannot distinguish between the block
direction right-to-left for Japanese and left-to-right for Mongolian.
- A table shape in Draw/Impress does no allow vertical writing mode at all.
- A table in Writer allows only the vertical modes tb-rl and sideways-lr
(currently written as loext:bt-lr). LO can render mode tb-lr in Writer, if the
writing mode is inherited from the page style by attribute value "page", that
is "use superordinate object settings" in the UI.
- No table can render mode sideways-rl.
Referenced Bugs:
https://bugs.documentfoundation.org/show_bug.cgi?id=94587
[Bug 94587] [META] Properly support existing ODF features
https://bugs.documentfoundation.org/show_bug.cgi?id=162118
[Bug 162118] [META] Preparing LibreOffice for ODF 1.4
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