Tracking: Layout and Text

[nicoburns]

Layout and Text

This issue tracks improvements the Blitz's layout engine (including text/inline layout).

Block-level layout (Taffy)

Improvements which will happen primarily in Taffy. See also: the Taffy roadmap issue in the Taffy repo.

• calc values
• z-index (non-direct siblings)
• Direction
• "safe" alignment keywords
• Support align-content in Block layout taffy#709
• Intrinsic sizing keywords (min-content, max-content, fit-content())
• position: static
• position: fixed
• writing-mode
• CSS Subgrid layout

Text/inline layout (Parley)

Improvements which will happen primarily in Parley. See also: the Blitz tracking issue in the Parley repo.

• text-wrap-mode
• vertical-align
• Subscript and superscript
• Margin/border/padding for inline spans (should be bidi-aware)

Cross-cutting (Taffy AND Parley)

Improvements which need to happen in both Taffy and Parley

• Floats (Float Layout taffy#437 and Floated boxes (CSS Floats) linebender/parley#99)
• Improved baseline alignment

Other

Improvements which will happen directly in Blitz

• Table improvements
  • table-layout: fixed
  • Support for border-collapse: collapse

[Drodofsky]

Are there plans to support the HTML ruby element (<ruby>, <rt>)?
Example: <ruby>漢字<rt>かんじ</rt></ruby> : 漢字かんじ

[nicoburns]

Are there plans to support the HTML ruby element (<ruby>, <rt>)? Example: <ruby>漢字<rt>かんじ</rt></ruby> : 漢字かんじ

Eventually yes, but I don't think anyone is actively working on this yet. The place to track this is in the https://github.com/linebender/parley repository