- From: Gérard Talbot <www-style@gtalbot.org>
- Date: Mon, 29 Jul 2013 01:06:23 -0400
- To: "Hĺkon Wium Lie" <howcome@opera.com>
- Cc: "www-style mailing list" <www-style@w3.org>
Hello, [src] http://test.csswg.org/source/contributors/opera/submitted/multicol/multicol-count-computed-001.xht [reftest] http://test.csswg.org/source/contributors/opera/submitted/multicol/multicol-count-computed-ref.xht When width of column-gaps equal the available width of a multi-column element, then used column-width of colum boxes should be 0px. (11) if (column-width = auto) and (column-count != auto) then (12) N := column-count; (13) W := max(0, (available-width - ((N - 1) * column-gap)) / N); (14) exit; used width == max(0, (12em - ((3 - 1) * 6em)) / 3); used width == max(0, (12em - (2 * 6em)) / 3); used width == max(0, (12em - 12em) / 3); used width == max(0, 0em / 3); used width == 0px So, in this test, there should be 3 column boxes of each 0px wide. Now, §8.1 states: " Content in the normal flow that extends into column gaps (e.g., long words or images) is clipped in the middle of the column gap. " http://www.w3.org/TR/css3-multicol/#overflow-inside-multicol-elements So, I believe only the first 3 "x" of the <span id="pink"> should be displayed. And only the first 3 "x" of the <span id="orange"> should be displayed. §8.2 states: " overflow outside multicol elements Content and column rules that extend outside column boxes at the edges of the multi-column element are clipped according to the ‘overflow’ property. " And so (since default, initial value of 'overflow' is 'visible'), the 4 "x" of the <span id="purple"> should be displayed, with the first, leftmost one overlapping the border-right. The 3 rightmost "x" of the span id="purple" should extend outside the multi-column element. The 2 blue column rules should be rendered too, with the left half (0.75em) of the first column rule overlapping the 3rd pink "x" and the left half (0.75em) of the 2nd column rule overlapping the 3rd orange "x". I believe the reftest is wrong. What am I missing? -------------------- [src] http://test.csswg.org/source/contributors/opera/submitted/multicol/multicol-count-computed-002.xht [reftest] http://test.csswg.org/source/contributors/opera/submitted/multicol/multicol-count-computed-2-ref.xht Here, the 2 column-gaps excede the available width. What should happen in such case? Should the given algorithm in §3.4 still be used? Because it seems (lines 11 to 14 mentioned above) can still apply... If we follow the given algorithm in §3.4, then used width of column boxes should be again 0. Gérard -- CSS 2.1 Test suite RC6, March 23rd 2011 http://test.csswg.org/suites/css2.1/20110323/html4/toc.html Contributions to CSS 2.1 test suite http://www.gtalbot.org/BrowserBugsSection/css21testsuite/ Web authors' contributions to CSS 2.1 test suite http://www.gtalbot.org/BrowserBugsSection/css21testsuite/web-authors-contributions-css21-testsuite.html
Received on Monday, 29 July 2013 05:07:03 UTC