[dolanmiu]

Closes #3171

#3171: the text box demo opens blank in WPS Office. Checked in WPS Office for Mac 12.1:

• docx 9.5.1 (current when the issue was filed): all three text boxes are missing. It wrote w:pict straight into w:p, which the schema doesn't allow.
• docx 9.15.0: the boxes appear, fixed by fix(textbox): write a text box's picture in a run, and only that run inside a paragraph #3541 in 9.8.0, which put the picture in a run. But the demo's boxes, which have height: "auto", are too short: only the tops of their letters show.

Every Textbox is written with mso-fit-shape-to-text, so Word, WPS, LibreOffice and Pages make the box as tall as its text, whatever its height. WPS, though, fits a box of auto height (or one with no height) too short by its top and bottom insets (7.2 pt), cutting off its last line. With a definite height it fits the text exactly, growing a 20 pt box with three lines and shrinking a 100 pt one. Word writes a definite height for every text box it saves.

So a text box without a height, or with "auto", is now written height:1in. Any height of 8 pt or more works in all four applications. 1in also gives apps that don't fit the box to its text, such as docx-preview on the docs site, a few lines of room rather than their own default.

Box with three lines	Word for Mac	WPS 12.1	LibreOffice	Pages
height: "auto" / none	fits	about 7 pt short, last line cut	fits	fits
0pt, 1pt, 5pt	short below about 8 pt	short by 7.2 pt minus the height
20pt, 100pt	fits	fits	fits	fits

text-box.md's "Fixed Size" section said a height fixes the box's size, which none of those applications do. Sizing now says what height does, and why "auto" is written as 1in.

Tested

• The text box demo built from this branch: in WPS both visible boxes fit their text. In Word for Mac the three shapes are 19.4 pt tall, as with 9.15.0. LibreOffice lays it out the same as 9.15.0.
• New specs: "auto" is written as 1in in place, and a given height is kept. They fail without the fix. createShape's and Textbox's specs now expect height:1in when no height is given.
• npm run test:ci (417 files, 6562 tests, 100% coverage), npm run build, tsc --noEmit, eslint, prettier and cspell.

Summary by CodeRabbit

• Bug Fixes

  • Text boxes with a style but no height now use a 1-inch height. Automatic height is also saved as 1 inch, while explicit heights remain unchanged. Text boxes without a style remain unchanged.

• Documentation

  • Clarified that text box width should be set in its style and described how office apps and page previews handle box sizing. Removed the sizing examples.

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Commits

Reviewing files that changed from the base of the PR and between 19e9c8e and 94d7d8c.

Files selected for processing: 3

• docs/usage/text-box.md
• src/file/textbox/shape/shape.spec.ts
• src/file/textbox/shape/shape.ts

Files skipped from review as they are similar to previous changes: 2

• src/file/textbox/shape/shape.ts
• src/file/textbox/shape/shape.spec.ts

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Walkthrough

Textbox shape creation adds a 1in height when a supplied style omits height or sets it to "auto". Explicit heights and omitted styles remain unchanged. Tests and usage guidance describe the serialized style and sizing behavior.

Changes: Textbox height formatting

Layer / File(s)	Summary
Apply and document the height fallback src/file/textbox/shape/shape.ts, src/file/textbox/shape/shape.spec.ts, src/file/textbox/textbox.spec.ts, docs/usage/text-box.md	createShape uses 1in when an existing style omits height or sets it to "auto". Tests confirm that explicit heights remain unchanged and that omitted styles remain omitted. The usage guide describes width and height behavior across applications.

Priority: Normal

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Bug fix · Severity of issue fixed: Medium

Suggested reviewers: hodish1, theunal

Merge Risk: Minimal · up to 94d7d

The height fallback preserves explicit heights and leaves styleless boxes unchanged. No concrete merge-blocking risk is established; merge after normal checks.

Pre-merge checks: 5

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title names the main change: a text box with auto height is now written as 1 inch tall so WPS Office fits the box to its text. The changeset matches this. shape.ts adds a 1in height when a style h…
Linked Issues check		[#3171] The issue reports that a DOCX demo with a Textbox opens blank in WPS. The blank-box part is addressed by existing code at the reviewed head: Textbox in src/file/textbox/textbox.ts writes t…
Out of Scope Changes check		All changes support the #3171 WPS display fix. The shape.ts change applies only when a style is supplied and its height is missing or "auto". A box with no style is not changed. The `shape.spec.ts…
Docstring Coverage		No eligible functions found in the changed files. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentat…

Full details: Title check

Explanation

The title names the main change: a text box with auto height is now written as 1 inch tall so WPS Office fits the box to its text. The changeset matches this. shape.ts adds a 1in height when a style has no height or has "auto", and shape.spec.ts and textbox.spec.ts cover the new behavior. The docs in text-box.md explain the sizing rules.

Full details: Linked Issues check

Explanation

[#3171] The issue reports that a DOCX demo with a Textbox opens blank in WPS. The blank-box part is addressed by existing code at the reviewed head: Textbox in src/file/textbox/textbox.ts writes the w:pict inside a w:r run when it is a child of w:p. This PR adds the remaining WPS fix in src/file/textbox/shape/shape.ts. createShape now sets height: 1in on a supplied style when its height is absent or "auto". A given height is kept. The mso-fit-shape-to-text:t; setting stays in place. The specs in shape.spec.ts and textbox.spec.ts check this serialization. The WPS rendering result (boxes fit their text in WPS Office for Mac 12.1) is author-reported manual testing. It cannot be confirmed from the repository, but the coding change matches the stated fix.

Full details: Out of Scope Changes check

Explanation

All changes support the #3171 WPS display fix. The shape.ts change applies only when a style is supplied and its height is missing or "auto". A box with no style is not changed. The shape.spec.ts and textbox.spec.ts updates verify this serialization. The docs/usage/text-box.md update documents the sizing behavior that this change introduces. No unrelated product behavior is changed in the reviewed diff.

Full details: Docstring Coverage

Explanation

No eligible functions found in the changed files. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentation-only edits and deletions within surviving functions are included; unchanged diff context and fully deleted functions are excluded. Analyzed 0 functions across 3 files. (1 skipped: 1 unsupported.)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (1146a21) to head (94d7d8c).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master     #3858   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          576       576           
  Lines        27806     27809    +3     
  Branches     10185     10186    +1     
=========================================
+ Hits         27806     27809    +3     

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Actionable comments posted: 1

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• 🪄 Fix comments: Fix CodeRabbit comments on this PR

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Inline comments:
Review comments at @src/file/textbox/shape/shape.ts:
- Line 35: Update withFitFromHeight so an absent style receives the default
1-inch height, while preserving explicitly specified heights; update the “should
create default styles” expectation for createShape to include that height.

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Commits

Reviewing files that changed from the base of the PR and between 1146a21 and 19e9c8e.

Files selected for processing: 4

• docs/usage/text-box.md
• src/file/textbox/shape/shape.spec.ts
• src/file/textbox/shape/shape.ts
• src/file/textbox/textbox.spec.ts

Included review availability: This review used your included allowance. Your plan provides up to 8 included reviews per hour; 6 remain after this review.