Minutes Telecon 2013-07-03
- Dirk requests review of CSSMatrix interface for publication as First Public Working Draft.
- Resolved: Tate-chu-yoko compression is UA-defined, however UAs MUST transform full-width chars/glyphs before compressing them. Spec will include John Daggett’s sample algorithm as an example for UAs to follow.
- Resolved: Text-decoration line thickness and position undefined in level 3. (Replaces previous resolution at Tokyo F2F.)
- Resolved: It is undefined in level 3 whether text and decorations are composited before shadowing or not.
- Resolved: Drop
text-underline-position: alphabetic.
- Resolved: Take CSS3 Text Decoration to Candidate Recommendation.
Full minutes
Minutes Telecon 2013-06-26
- Resolved:
em is computed font-size; ex, ch measure actual used value font metrics.
- Resolved: Publish CSS3 Fonts as Last Call Working Draft after solving
@font-feature-values object model dependency on missing WebIDL feature.
- Discussed turning text-align into shorthand including text-align-last. (See proposal.) Rossen to collect data on existing usage to evaluate backwards-compatibility situation.
- Discussed having
letter-spacing: <length> not disable inter-letter justification. See thread.
Full minutes
Minutes Telecon 2013-06-19
- Resolved: Koji, fantasai and Jim Dovey as editors of CSS Ruby (which is now being rewritten)
- Resolved: Leave directional
nav-* properties in spec, at risk in level 3.
- Discussed errata’ing Media Queries 3
- Resolved: Top-level
! is invalid in Custom Properties (Variables).
- Resolved: Add
elementsFromPoint() to CSSOM View spec.
- Resolved: Multiple subject selectors allowed and all match (Selectors L4).
- Need review of Cross-Origin Style Sheets discussion.
Full minutes
Minutes Tokyo F2F June 2013 Part VI: Fonts, Text Decoration
Fonts
- Resolved: Leave synthesis of italics in vertical text undefined.
- Resolved: Accept Tab’s proposal for
@font-feature-values object model, with change from string to numbers.
- Resolved: Discussed whether
@font-feature-values is an at-rule. (It is.)
- Resolved: We will use Promises in the font loading API.
- Resolved: We will not add Glenn’s proposal of
font-feature-settings: none.
- Resolved: If an element has
text-decoration set and font-variant non-normal, then we synthesize superscripts and subscripts, and text-decoration follows those metrics.
- Deferring any extensions to current
font-language-override feature to level 4.
Full minutes: Part I, Part II
Text Decoration
- Resolved: Text decoration doesn’t consider descendant content for line thickness or positioning. (Note, this resolution was later superseded to make the behavior undefined.)
- Discussed
text-underline-position: alphabetic and auto.
Full minutes
Minutes Tokyo F2F Part V: Core Syntax, Conditional Rules Syntax, Variables Syntax, Media Queries Syntax, Misc Syntax
Conditional Rules / Core Syntax
- Resolved: Whenever error-recovery closes open blocks, urls, strings, functions, brackets, etc., it implies the minimal tokens to close those constructs.
- Resolved:
\[EOF] turns into U+FFFD except when inside a string, in which case it just gets dropped.
- Resolved: Clarify that
badstring and baduri make @supports rules invalid.
- Resolved:
!important allowed in @supports
- Resolved: Publish CR with updates for CSS3 Conditional Rules.
- Discussed
@charset handling and removing unused encodings. Conclusion to leave in issue and ask for feedback whether to add additional encoding patterns.
- Resolved: Charset propagation from linking document is same-origin. Leave issue open until we’re more sure of this being stable.
- Resolved: NUL gets turned into replacement char U+FFFD.
- Confirmed that
non-ascii is updated to include all non-ASCII chars.
- Resolved: loosen the rules describing the way comments are serialized
- “Safe but pointless” change to
UNICODE-RANGE token was discussed. No resolution recorded.
- Reviewed addition of attribute-matching tokens for reducing lookahead.
- Reviewed addition of
COMMA token.
- Reviewed change to
NUMBER token (to include sign).
- Reviewed change to bracket-matching of
url() notations.
- dbaron asked whether
CDO/CDC were correctly fixed. No response was recorded in the minutes.
- Resolved: Escaping in An+B notation falls out of tokenization rules. (Isn’t specialized for An+B.)
- Syntax is missing section that actually defines interpreting CSS syntax into style rules, at rules, etc.
- Resolved: Add Simon Sapin as co-editor.
Full minutes: Part I, Part II
Variables
- Resolved: Can’t put unmatched
) ] }, badstring, badurl, top-level ; into variables
Full minutes
Media Queries and Misc
- Resolved: Media Aueries requires white space on both sides of a conjunction keyword.
- Resolved: Clarify in grammar that idents followed by open parenthesis must have white space between the two unless it’s a function. (I.e. use
S+ instead of S*.)
- Resolved: String and URL types for
attr() literally takes the attribute’s value without parsing; CSS escapes are not interpreted.
Full minutes
Minutes Tokyo F2F June 2013 Part IV: Priorities, Grid Layout, Alignment, Stacking Contexts, Backporting Policy
CSSWG Priorities
Philippe Le Hégaret, W3C’s Interaction Domain Leader, presented on the metrics W3C Management (W3M) has about the CSSWG’s progress over the past charter period. Discussed what was accomplished and whether that fits with the CSSWG’s own interests and priorities.
Full minutes
CSS Grid Layout
- Resolved: Snap-to-grid is out-of-scope for CSS Grid Layout module
- Discussed use of
position: grid to pull descendant elements up into an ancestor grid.
- Resolved: Absolute-positioning rules for grid items accepted as described in the spec, with
auto offsets meaning use padding edge of containing block.
- Resolved: Change issue 8 on sizing collapsed tracks into a more general issue about how to collapse a grid track.
- Plan to change
grid-definition-* and grid-template properties to grid-template-[rows|columns|areas] and look into defining grid-template as a shorthand for all three, using syntax similar to that in the Template module.
- Long discussion of default handling of grid container’s contents. Tentatively resolved on making
grid-auto-flow: row the default, which turns all grid container children into grid items and auto-flows them (similar to Flexbox). Issue still open for future discussion.
Full minutes
Alignment
Tab and fantasai presented the new CSS Box Alignment draft, explaining changes in design and details since the earlier FPWD.
- Resolved: Need more work on baseline section; define first-line and last-line baseline for all things.
Full minutes
Stacking Contexts
- Resolved: Table cells do create pseudo stacking-contexts (as resolved before) but borders and backgrounds (of the cell or its ancestors) are not in that pseudo stacking-context.
Full minutes
Backporting Policy
Principle: A change to a CSS3 spec that would make all CSS 2.1-compliant UAs incompliant needs to be backported to CSS2.1.
Note: If it would break content, we shouldn’t be making the change.
Full minutes
Minutes Tokyo F2F June 2013 Part III: Counter Styles, Cascade, Transitions
Counter Styles
Discussed Last Call publication of Counter Styles and linking to Internationalization WG’s Counter Styles NOTE.
Full minutes
CSS3 Cascade
- Resolved: Close issue on how
!important interplays with scoped styles; current spec is good.
- Resolved: Ok with current definition of
default, remove issue, but also clarify the spec and add examples.
- Discussed adding a new keyword for
inherit-or-initial depending on whether property inherits by default.
- Resolved: Adopt A, C, D, and E from David Baron’s message on Transitions and Animations cascading order, use the cascade as currently-specified in CSS3 Cascade, plus magic: animation on an element turns off transitions for the affected properties. Re-evaluate after implementation experience.
- Resolved: Take CSS3 Cascade to Last Call, with edits mentioned in minutes today. Ping HTMLWG especially, also notify WebApps, SVG, WAI. Set 4-week comment period.
Full minutes
Transitions
- Resolved: dbaron’s proposal for reversing interrupted transitions is accepted.
- (See also earlier resolution on cascading order of Transitions.)
Full minutes
Minutes Tokyo F2F June 2013 Part II: Zoom Media Queries, Cross-site Security, Shapes, Events and Fragmentation
Zoom Media Queries
Discussed SVG use case of including more details as user zooms in, e.g. on a map. While discussing how to solve this, it became clear that while people have some idea of how zooming is interpreted wrt Media Queries, the whole interaction of resolution and resizing is vastly underdefined and needs work before we can sensibly add related new features.
Full minutes
Cross-site Security
Discussed possibilities of cross-site attacks via CSS. One case that krit brought up wrt importing shapes was dismissed as Not a Problem. Some others raised by roc & bz might need more thought and discussion.
Full minutes
Shapes Dependencies
- Brief discussion of SVG proposals’ dependencies on Shapes and how to deal with that.
- Resolved: Move contours from rendered content to next level
- Discussed using same-origin restrictions for shapes.
- Resolved: Close the float/exclusion harmonizing issue. Exclusion wrapping context does not include floats.
Full minutes: Part I, Part II
Events and Fragmentation
- Resolved: Work on
pointer-events: elements-from-point solution that will walk the elementsFromPoint() chain instead of the ancestor chain (problem is passing events from content to fragmentation container)
- Issue raised against Selectors 4 wrt whether
::pseudo:pseudo combinations are invalid or match nothing.
Full minutes
Minutes Tokyo F2F June 2013 Part I: Animations, SVG Text, Compositing and Blending
Web Animations
Brian Birtles presented the Web Animations editor’s draft with an overview of its contents. (See also diagram.)
Dean Jackson of Apple expressed some concern at adding so much API to
the Web platform at once:
[We're] concerned about the massive amount of new API to add in one step. Generally Web improvements are more successful when iterative rather than massive new feature.
And also expressed that
Apple’s main interest in this type of work is very much in the form of declarative approaches to animation backed by a strong API.
and so there was some concern over leaving out features needed for declarative control.
However, everyone agreed that the spec was in good shape for FPWD, so
- Resolved: Publish Web Animations as First Public Working Draft (resolved by both CSS and SVG WGs).
P.S. There is an experimental JS shim for the draft available.
Full minutes
Reusing Stroke and Fill in CSS
The CSS and SVG WGs discussed the possibility of reusing the SVG stroke and fill properties to stroke and fill text in CSS. Some concerns raised:
- controlling pattern fill boundaries when an inline breaks across lines
- figuring out appropriate initial values and interaction with
color
- inheriting a pattern fill doesn’t work in CSS; need to know which element specified the pattern, otherwise adding unstyled inline around part of the text will reset the pattern
- SVG properties don’t follow the CSS shorthanding patterns; need to check back-compat wrt whether this can be fixed
- need some control over where the stroke sits on the glyph outline
fantasai and Tab volunteered to draw up a proposal for how this should work
Full minutes
SVG Text Wrapping
Discussed SVGWG’s proposals ([1], [2]) for adding soft-wrapping to SVG. The goal is to re-use CSS functionality (and layout engines) for SVG text layout. No objections so far to proposal to add a width attribute to <text> for wrapping; however it was felt by some that for formatting multi-block content, HTML markup should be reused. In general, people want CSS text formatting to Just Work in SVG, not require special rules for SVG text content.
Full minutes
Compositing and Blending
Reviewed Compositing and Blending draft, which now contains only 3 CSS properties: mix-blend-mode, isolation, background-blend-mode. Discussed use cases, design, interaction with stacking contexts, forwards-compatibility, etc. The draft needs more review. Meanwhile,
Full minutes
CSS Masking Draft Updated
The CSS Working Group and the SVG Working Group have published an updated Working Draft of CSS Masking. CSS Masking provides two means for partially or fully hiding portions of visual elements: masking and clipping.
With this draft, CSS Masking integrates better with terms and definitions of the CSS Backgrounds and Borders module. The syntax of the ‘mask’ shorthand property is conformant with the ‘background’ shorthand property. Authors can switch between alpha and luminance masking on mask-image now. The IDL definitions of SVGMaskElement and SVGClipPathElement were adapted to use WebIDL.
Changes since the last Working Draft are listed in the Changes section.
Please send feedback to the (archived) public mailing list public-fx@w3.org with the spec code ([css-masking]) and your comment topic in the subject line. (Alternatively, you can email one of the editors and ask them to forward your comment.)
![[Photo: group photo of the CSS working group in Lyon, France]](/web/20130829182458im_/http://www.w3.org/Style/CSS/csswg-2010.jpg)
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