Berlin F2F April 2018

Meeting Minutes

• Tuesday, April 10:
  • Part 1: Snapshot, Scheduling, Decisions
  • Part 2: Editorships, box-sizing, Writing Modes
  • Part 3: Spatial Navigation, Floats
  • Part 4: CSS Grid and Box Alignment
  • Part 5: Sizing, Flexbox, Overflow
  • Part 6: TTML Requests
• Wednesday, April 11:
  • Part 1: CSS Contain, CSS Scoping, CSS Pseudo Elements
  • Part 2: CSSOM, CSS UI 4, CSS Timing
  • Part 3: CSS Scroll Snap, CSS Text 3
  • Part 4: Web Animations
  • Part 5: Fonts, CSS Text / Text Decoration, Ruby
• Thursday, April 12:
  • Part 1: Flexbox, line-clamp/max-lines/block-ellipsis
  • Part 2: Multicol
  • Part 3: FXTF spec-editing, Subgrids, Box Model
  • Part 4: Table Boxes, Aliasing, Text, Overflow
  • Part 5: Contain, CSS2, Testing

General Information

• Host: Monotype
• Location: Neue Mälzerei, Friedenstr. 91, 10249 Berlin, Germany
• Adjacent to TYPO Labs 2018, at Umweltforum nearby
• Confirmed dates:
  • Monday April 9: Houdini Meeting
  • Tuesday-Thursday April 10-12: CSS WG Meeting
  • Tuesday, April 10: CSS WG dinner at the Solar Lounge. Group 4-course dinner menu includes a vegetarian option (need a preliminary count for those who would prefer a vegetarian option).
  • Thursday: Lunch at 1:30-2:30 pm, at Umweltforum nearby (TYPO Labs location)
  • Thursday: TYPO Labs get-together dinner party - BBQ and drinks.
  • Thursday-Saturday April 12-14: TYPO Labs (with workshops Friday & Saturday)
• Hotel nearby: NH Hotel Berlin Alexanderplatz.

TYPO Labs 2018 registration info

• Ticket store is now open
  • Tickets are non-transferable
• A single 45-min speaker slot on Friday, April 13 is reserved for CSS WG participants who wish to prepare a talk (it could be subdivided into two or three slots if we wish).

Participants

Please add ‘block’ to the hotel column if you would be interested in taking advantage of the organizers’ hotel rates.

UPDATE: There will be no block rate. You can book at the hotel if you want, or elsewhere, but you need to do it yourself, at the standard rate.

And please add ‘yes’ to the TYPO Labs column if you’d be interested in attending the TYPO event.

Name	Arrival	Departure	Hotel	Flight info and notes	TYPO Labs	CSS WG dinner
Alan Stearns	6 Apr	15 Apr			Yes	Yes, omnivore
Brian Birtles	7 Apr	17 Apr	Hampton	AF1534/JL6898	Maybe first day	Yes
Chris Lilley	8 Apr	15 Apr	block	AA6596/EZY5533	Yes	Yes, keto
Dael Jackson	6 Apr	13 Apr	AirBnB		No	Yes, vegetarian
Dirk Schulze				train	No	Yes
Emil A Eklund	10 Apr	14 Apr	Westin Grand	AF1534 / BA983	Probably not
Eric Willigers	6 Apr		block		No	Yes
fantasai	8	13	AirBnB	via London	Yes	Yes, gf
Florian Rivoal	9	15	Airbnb		Yes	Yes
Geoffrey Sneddon	6 Apr	15 Apr	family	FR151 / BA983+BA279	Probably not	Yes
Ian Kilpatrick			block	swim	Maybe first day
Jihye Hong	9 Apr	14 Apr	AirBnB			Yes
Koji Ishii	10 Apr	13 Apr	Hotel Zoe	AF1434 / AF1835	Probably not
L. David Baron	8 April, 17:05	14 April, 10:15	Victor’s Residenz-Hotel Berlin	[[https://flightaware.com/live/flight/FIN74	AY74]]/[[https://flightaware.com/live/flight/FIN1437	AY1437]], [[https://flightaware.com/live/flight/DLH39	LH39]]/[[https://flightaware.com/live/flight/UAL59	UA59]]	Friday only	Yes, no beef
Lea Verou			block?		probably	Yes, keto
Manuel Rego	9 Apr	14 Apr	NH Hotel Berlin Alexanderplatz		Friday only	Yes, no restrictions
Myles C. Maxfield			Brandenburg Gate	Zeppelin	Definitely	Yes, no restrictions
Naina Raisinghani			Westin Grand		No	Yes, no red meat
Rachel Andrew	9 Apr	12 Apr	Hampton	BA992/BA995	No	Yes, pescatarian - allergic shellfish, wheat, eggplant
Peter Linss	8 Apr	14 Apr	AirBnB?	QTR77/QTR82		Yes, omnivore
Remy Francois	6 Apr	16 Apr			No	Yes
Rob Flack	7 Apr	13 Apr			No	Yes
Rossen Atanassov				train	Yes	Yes, [[https://en.wikipedia.org/wiki/Pescetarianism	pescetarian]]
Shane Stephens			New Berlin			Yes
Simon Fraser					No	No
Surma
Tab Atkins			newberlin			yes
Tantek Çelik	2018-04-09 18:55	2018-04-15 11:45	Victor’s Residenz-Hotel	UA9725+LX982 / UA8973+UA59	Yes	Yes, pescetarian(No goat cheese)
Vladimir Levantovsky			block		Yes	Yes, omnivore
Rune Lillesveen	8 Apr	12 Apr			No	Yes

Observers

Name	Organization
Christian Biesinger
Emilio Cobos Álvarez	Mozilla
Oriol Brufau
Richard Rutter
Jason Pamental
Majid Valipour	Google

Agenda Items

If there’s time

• CSS-UI (Florian) (can be done at regular teleconf if we’re out of time)
  • Change the pointer cursor to indicate any interactive element
  • let user-select:contain prohibit selection from outside
  • Readonly form control and user-select
• Transforms (Eric) (not Thursday, can be done at regular teleconf if we’re out of time)
  • 2D and 3D rotation are distinct
• Constructable Stylesheets
• Making things focusable in CSS (if Brad Kemper attends)

Misc, break-time chat or just fun read

• Is it possible to have an “Edit on GitHub” or “Propose A Change” link to specs that points to a .bs file?
• Of kiloparsecs and Special Relativity https://github.com/w3c/csswg-drafts/issues/2491#issuecomment-379215215

Schedule

Tuesday

Morning

(Housekeeping)

• 2018 Snapshot
  • List features cleared for shipping
  • Publish? Remaining open issues
• 2019 f2f schedule
• meta-issue: when we don’t act on some ambig we spec due to compat. latest example, having flex/grid % margins be based on oldest (block flow) model, rather than anything in the past 20 years (positioning, flex, grid).
• Editorship of css-page-floats
• definition of box-sizing in css-sizing
• Move overscroll-behavior spec from WICG to csswg-drafts
• Writing modes update (Koji, Fantasai)

(Input)

• Spatial navigation (Jihye & Florian, not Thursday)
  • Status Update on work in WICG & Demo
  • Missing scroll-related anchoring terminology:
    • https://github.com/w3c/csswg-drafts/issues/2322
    • https://github.com/w3c/csswg-drafts/issues/2323
  • missing box terminology

  • Interaction media feature [ navigation: none

    sequential

    spatial ](https://github.com/WICG/spatial-navigation/issues/41)

  • hitability testing

(Layout 1)

• Complex float shapes and bfc sizing: #2452 (frremy)

Afternoon

• Grid
  • Review state of Grid Level 2, figure out next steps
  • https://github.com/w3c/csswg-drafts/issues/2356 (Florian)
  • Grid track sizing items spanning a flexible track
  • ‘justify-content’ other than ‘normal’ or ‘stretch’ should change column count/size rules
  • axis names
• Alignment
  • Closing out last few open issues and republishing
• css-sizing
  • Does indefinite min-height: N% fall back to zero or auto?
  • Indefinite percentages in calc() are underspecified
  • Adding a ‘size’ shorthand for ‘width’/’height’
• Flex
  • Table flex items with main size less than preferred intrinsic width
  • Proposing Flexbox Level 2

• Outstanding requests from TTML

• css-overflow (not Thursday)
  • overflow:clip (Florian) (preferably before talking about max-lines & co)
  • Let ‘overflow’ accept two values ( Loirooriol)

  • [[https://github.com/w3c/csswg-drafts/issues/2473

    Add overscroll-behavior-[block/inline] in accordance with css-logical]]

Wednesday

Morning

(Cascade)

• ::part & ::theme (Wed. morning)
• Consider making ::slotted and :host take a single argument.
• Specificity of :host, ::slotted, and :host-context doesn’t seem to be defined?
• ::selection style propagation
• getComputedStyle tree/document issues: #1548, #1964, #2403 (dbaron and emilio + also frremy)
• getComputedStyle only supports ::before/::after
• CSS-Contain (Florian) (Schedule before css-display)
  • Scoping of the content property unclear
  • Clarify style containment property scoping
  • contain:paint should use padding box instead of content box
  • containment and formatting contexts
  • size containment and non atomic inlines
  • containment and internal ruby elements
  • Publish updated CR (DoC)?
• obscuring text for <input type=password> styling
• Remaining css-timing issue + transition spec to CR (not Thursday)

Afternoon

• css-scroll-snap (not Thursday)
  • Path to interop among implementations

(Text and Fonts)

• CSS3 Text - All Open Issues
• Fonts
  • Fonts l4 super-format()
  • font property descriptors for variable fonts
  • (distinction – or not – between ‘oblique 0deg’ and ‘normal’ for font-style)
  • default angle for font-style: oblique
  • font-variant @font-face descriptor
• CSS Text 4
  • text-spacing: space-first (Murakami, via Florian)
  • Allow for paragraph-level line breaking
• Rules for Simple Placement of Ruby (Kobayashi-sensei via Florian)

• Bikeshed font underline value names

• Animation breakout

Thursday

Morning

(Layout 2)

• Flex
  • Min-content of shrinkable flex items: #2353 (frremy)
• max-lines / block-ellipsis / [-webkit-]?line-clamp ( Fantasai & Florian)
  • Introducing max-lines / block-ellipsis / line-clamp
  • Which kind of boxes accept max-lines
  • How does max-lines interact with descendants’ max-lines
  • Which descendants are skipped in max-lines
• Multicol
  • Add switch to avoid generating empty column boxes? (rachelandrew tabatkins)
  • References to paged media (rachelandrew)
  • column rules should only be drawn to the height of the column contents (rachelandrew)
  • Spanning elements late in the content, treated as column-span: none (rachelandrew)
  • Can overflow content influence column height? (rachelandrew)

(FXTF)

• Raise awareness of FX specs in the CSS WG
• New WD for Filter Effects and CSS Masking
• Need editors
  • Compositing and Blending
  • Geometry

Afternoon

• Dual-axis vs. Per-axis Subgrids
• Display
  • How does block inside inline affect the box tree, exactly?
  • Is ::marker created by display:list-item or does it always exist?
• Rename table box to table grid box
• Text-3 issues again
• css-overflow overflow
  • padding-bottom in overflow content (Fantasai)
• css-contain again
  • How do layout and size containment interact with column/page fragmentation?
• CSS 2.x (tantek, gsnedders, fantasai)
  • Proposed CSS 2.x editing & publishing workflow (#2553)
• Testing
  • WPT - Extra CSS testsuite requirements: wpt#10053 (gsnedders, rego, florian)
  • CSSWG specs need usable test suite docs
• CSS 2.x (tantek, gsnedders, fantasai)
  • Naming of revision of CSS 2.1 (#2008)

Did not get to

• CSS 2.x (tantek, gsnedders, fantasai)
  • Should we add scientific notation to CSS 2.1? (#2542)
  • Anchors changed in CSS 2 in-place edit in 2016 (#2551)
  • Syntax section readded despite WG resolution (#2224)
• Multiple border colors, revisited