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[css2] Changes to table layout agreed on in transition call with the Director
--HG-- extra : convert_revision : svn%3A73dc7c4b-06e6-40f3-b4f7-9ed1dbc14bfc/trunk%402704
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‎css2/Makefile‎

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# Makefile to generate the CSS2 document based on its "source files"
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# Arnaud Le Hors - lehors@w3.org
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# $Id: Makefile,v 2.99 2007-04-16 12:58:45 bbos Exp $
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# $Id: Makefile,v 2.100 2007-05-16 19:21:05 bbos Exp $
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# what needs to be set for every new release:
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# Note use of full year (1998) in identifier.
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THE_YEAR = 2007
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THE_MONTH = 04
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THE_MONTHNAME = April
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THE_MONTH = 05
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THE_MONTHNAME = May
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THE_DAY = XX
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THE_STATUS = CR
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THE_STATUSNAME = Candidate Recommendation
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THE_STATUSNAME = CR editors draft
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PREV_YEAR = 2006
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PREV_MONTH = 11

‎css2/Project.cfg‎

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# value contains spaces.
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#
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# Bert Bos <bert@w3.org>
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# $Id: Project.cfg,v 2.18 2005-06-02 22:02:46 bbos Exp $
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# $Id: Project.cfg,v 2.19 2007-05-16 19:21:05 bbos Exp $
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@source-extension .src
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@stylesheet style/default.css text/css
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@stylesheet http://www.w3.org/StyleSheets/TR/W3C-WD.css text/css
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@stylesheet http://www.w3.org/StyleSheets/TR/W3C-CR.css text/css
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@contents "cover.html#minitoc"
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# Additional links. If for navbar, then add a 3rd column

‎css2/cover.src‎

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<h2 id=status>Status of this document</h2>
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<p><em>Editor's draft.</em>
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<p>Insert CR status section here&hellip;
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<!--
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<p><em>This section describes the status of this document at the time
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of its publication. Other documents may supersede this document. A
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list of current W3C publications and the latest revision of this
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href="http://www.w3.org/Mail/Request">instructions</a>) is preferred
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for discussion of this specification. When sending e-mail, please put
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the text &#8220;[CSS21]&#8221; in the subject, preferably like
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this: &#8220;[<!---->CSS21<!---->] <em>&hellip;summary of
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this: &#8220;[CSS21] <em>&hellip;summary of
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comment&hellip;</em>&#8221;</p>
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<p>This document was produced by the <a
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<p>A test suite and a report on implementations will be provided
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before the document becomes a Proposed Recommendation.
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-->
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‎css2/images/longdesc/table-overlap-desc.html‎

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<h1>Long description for example showing how structurally
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overlapping cells are rendered</h1>
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<P>This example shows a difference between CSS's table model for HTML
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and for other document formats. The first, HTML, example is defined by
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HTML to be illegal, as it would lead to overlapping cells if HTML's
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rules for layout are followed. The CSS rules apply to other formats
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than HTML, and don't have this problem.
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<P>The diagram depicts how the two examples, the HTML one and the
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almost identical non-HTML one, might be rendered. The rendering of the
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HTML example is undefined, and one possible rendering is shown here,
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in the left half of the figure: it has two cells that overlap. The
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rendering of the non-HTML example is on the right, it follows the CSS
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rules and thus has no overlapping cells.
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<P>This example shows two different ways to render tables that are
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defined by HTML (and thus XHTML1) to be illegal, because of their
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specific combination of rowspan and colspan attributes.
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<P>The rendering on the left has two cells that overlap. The rendering
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on the right doesn't, but leaves a gap in the table.
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<p>In both tables, cells have gray backgrounds and a black
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border. Each contains a single digit as label. Cells are separated

‎css2/issues/issues-4‎

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Leave spec as-is.
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New proposal:
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http://lists.w3.org/Archives/Member/w3c-css-wg/2007AprJun/0250.html
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Add explicitly undefined cases to bullet 5 in 17.5
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Resolution:
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Issue closed.
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(After discussing with the Director:) the layout of illegal XHTML
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tables (and all similar combinations of rowspan/colspan in other
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formats) when rendered with CSS's table properties is explicitly
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undefined, as follows:
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Change this text in bullet 5 of 17.5
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The rectangle must be as far to the left as possible, but it
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may not overlap with any other cell box, and must be to the
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right of all cells in the same row that are earlier in the
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source document. (This constraint holds if the 'direction'
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property of the table is 'ltr'; if the 'direction' is 'rtl',
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interchange "left" and "right" in the previous sentence.)
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to
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The rectangle must be as far to the left as possible, but the
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part of the cell in the first column it occupies must not
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overlap with any other cell box (i.e., a row-spanning cell
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starting in a prior row), and the cell must be to the right of
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all cells in the same row that are earlier in the source
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document. If this position would cause a column-spanning cell
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to overlap a row-spanning cell from a prior row, CSS does not
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define the results: implementations may either overlap the
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cells (as is done in many HTML implementations) or may shift
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the later cell to the right to avoid such overlap. (This
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constraint holds if the 'direction' property of the table is
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'ltr'; if the 'direction' is 'rtl', interchange "left" and
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"right" in the previous two sentences.)
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Also change the following example and its image caption
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correspondingly.
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=Bert= edit.
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------------------------------------------------------------------------
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Issue 4.
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URI: http://fantasai.inkedblade.net/style/specs/css2.1/min-max-replaced-2

‎css2/issues/issues-4.html‎

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<tbody>
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<tr><td><a href="#issue-2">2</a> <td class=n>no response
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<tr><td><a href="#issue-3">3</a> <td class=o><a
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href="http://lists.w3.org/Archives/Public/www-style/2007Apr/0065.html">
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objection</a>
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<tr><td><a href="#issue-3">3</a> <td class=a><a
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href="http://lists.w3.org/Archives/Member/w3c-css-wg/2007AprJun/0156.html">
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accept</a>
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<tr><td><a href="#issue-4">4</a> <td class=n>no response
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<tr><td><a href="#issue-5">5</a> <td class=n>no response
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<tr><td><a href="#issue-6">6</a> <td class=n>no response
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<a href="http://lists.w3.org/Archives/Member/w3c-css-wg/2007JanMar/0303.html">http://lists.w3.org/Archives/Member/w3c-css-wg/2007JanMar/0303.html</a>
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Leave spec as-is.
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New proposal:
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<a href="http://lists.w3.org/Archives/Member/w3c-css-wg/2007AprJun/0250.html">http://lists.w3.org/Archives/Member/w3c-css-wg/2007AprJun/0250.html</a>
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Add explicitly undefined cases to bullet 5 in 17.5
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</pre></dd>
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<dt>Resolution</dt>
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<dd><pre>
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No change.
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(After discussing with the Director:) the layout of illegal XHTML
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tables (and all similar combinations of rowspan/colspan in other
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formats) when rendered with CSS's table properties is explicitly
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undefined, as follows:
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Change this text in bullet 5 of 17.5
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The rectangle must be as far to the left as possible, but it
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may not overlap with any other cell box, and must be to the
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right of all cells in the same row that are earlier in the
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source document. (This constraint holds if the 'direction'
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property of the table is 'ltr'; if the 'direction' is 'rtl',
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interchange "left" and "right" in the previous sentence.)
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to
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The rectangle must be as far to the left as possible, but the
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part of the cell in the first column it occupies must not
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overlap with any other cell box (i.e., a row-spanning cell
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starting in a prior row), and the cell must be to the right of
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all cells in the same row that are earlier in the source
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document. If this position would cause a column-spanning cell
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to overlap a row-spanning cell from a prior row, CSS does not
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define the results: implementations may either overlap the
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cells (as is done in many HTML implementations) or may shift
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the later cell to the right to avoid such overlap. (This
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constraint holds if the 'direction' property of the table is
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'ltr'; if the 'direction' is 'rtl', interchange "left" and
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"right" in the previous two sentences.)
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Also change the following example and its image caption
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correspondingly.
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</pre></dd>
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<dt>Status</dt>
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<dd><p>Issue closed.</p></dd>

‎css2/tables.src‎

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
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<html lang="en">
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<!-- $Id: tables.src,v 2.96 2006-10-10 18:53:27 bbos Exp $ -->
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<!-- $Id: tables.src,v 2.97 2007-05-16 19:21:06 bbos Exp $ -->
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<head>
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<meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1">
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<title>Tables</title>
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knowledge in CSS syntax.) Each cell is thus a rectangular box, one
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or more grid cells wide and high. The top row of this rectangle is
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in the row specified by the cell's parent. The rectangle must be as
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far to the left as possible, but it may not overlap with any other
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cell box, and must be to the right of all cells in the same row that
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are earlier in the source document. (This constraint holds if the
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'direction' property of the table is 'ltr'; if the <span
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class="propinst-direction">'direction'</span> is 'rtl', interchange
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"left" and "right" in the previous sentence.)
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far to the left as possible, but the part of the cell in the first
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column it occupies must not overlap with any other cell box (i.e., a
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row-spanning cell starting in a prior row), and the cell must be to
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the right of all cells in the same row that are earlier in the
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source document. If this position would cause a column-spanning cell
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to overlap a row-spanning cell from a prior row, CSS does not define
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the results: implementations may either overlap the cells (as is
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done in many HTML implementations) or may shift the later cell to
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the right to avoid such overlap. (This constraint holds if the
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'direction' property of the table is 'ltr'; if the 'direction' is
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'rtl', interchange "left" and "right" in the previous two
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sentences.)
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<li>A cell box cannot extend beyond the last row box of a table or
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row-group; the user agents must shorten it until it fits.
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&lt;/table&gt;
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</pre>
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<p>The second is formatted as in the figure on the right. However, the
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<p>The second is formatted as in the figure below. However, the
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HTML table's rendering is explicitly undefined by HTML, and CSS
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doesn't try to define it. User agents are free to render it, e.g., as
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in the figure on the left.
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<div class="figure">
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<p><img src="images/table-overlap.png" alt="One table with overlapping
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cells and one without"> <p class="caption">On the left, one possible
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rendering of an erroneous HTML 4 table; on the right, the only
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possible formatting of a similar XHTML table.
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cells and one without"> <p class="caption">Two possible
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renderings of an erroneous HTML table.
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</div>
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</div>
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