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Re: [CSS21, section 11.1.2] specification on clip property can be and should be improved

From: Bert Bos <bert@w3.org>
Date: Wed, 16 Mar 2011 00:56:31 +0100
To: "www-style@gtalbot.org" <www-style@gtalbot.org>, "www-style@w3.org" <www-style@w3.org>
Message-Id: <201103160056.31923.bert@w3.org>
On Monday 14 March 2011 16:41:19 John Jansen wrote:
> Hello Gérard,
> 
> The CSSWG resolved not to make these changes to the CSS 2.1
> specification [1]. We will be reevaluating this issue for errata and
> future versions of CSS.

Since then I have, however, improved the image in the example slightly, 
with arrows similar to the images you (Gérard) cited. That seemed an 
easy and safe thing to do. I made a snapshot: 
http://www.w3.org/Style/css2-updates/draft-PR-
CSS21-201103XX/visufx.html#clipping

> 
> Please respond before 18 March, 2011 if you do not accept the current
> resolution.
> 
> [1] http://w3.org/TR/CSS
> 
> > -----Original Message-----
> > From: www-style-request@w3.org [mailto:www-style-request@w3.org] On
> > Behalf Of "Gérard Talbot"
> > Sent: Friday, November 12, 2010 2:59 PM
> > To: www-style@w3.org
> > Subject: [CSS21, section 11.1.2] specification on clip property can
> > be and should be improved
> > 
> > Hello all,
> > 
> > This post spun from an ealier post from Arron Eicholz on clip and
> > text directionality (physical vs logical).
> > 
> > What CSS 2.1 section 11.1.2
> > http://www.w3.org/TR/CSS21/visufx.html#clipping
> > needs and is missing is a schema displaying clearly, in an
> > intuitive and easy-to- understand manner, those offset values.
> > 
> > 3 tutorials on CSS2.1 clip use a diagram, a built schema
> > illustrating clearly and cleanly and meaningfully the effects of
> > the rect(top, right, bottom, left) offset values:
> > 
> > Misunderstood CSS Clip
> > Tuesday, February 21, 2006 by Nicholas Gagne
> > http://www.ibloomstudios.com/images/article8/clipDiagram.gif
> > from
> > http://www.ibloomstudios.com/articles/misunderstood_css_clip/
> > 
> > Creating Thumbnails Using the CSS Clip Property Written on May
> > 13th, 2007 by Joe Seifi
> > http://www.seifi.org/css/creating-thumbnails-using-the-css-clip-
> > property.html
> > 
> > Nick La, November 09, Web Designer Wall
> > http://www.webdesignerwall.com/tutorials/5-simple-but-useful-css-
> > properties/
> > 
> > 
> > Also, the 2 examples
> > p { clip: rect(5px, 40px, 45px, 5px); }
> > p { clip: rect(5px, 55px, 45px, 5px); }
> > should be clearly and cleanly separated from each other. One CSS
> > code example with one screenshot of expected results
> > (encapsulated). Then, the other CSS code example with its
> > respective screenshot of expected result. That way, it's easier to
> > follow, read, understand and does not make the reader scroll up
> > and down. Also, the examples themselves could be improved by
> > making offset values bigger... I'm sure there is a lot of
> > improvements here.
> > 
> > regards, Gérard
> > --
> > CSS 2.1 Test suite RC3 (October 27th 2010)
> > http://test.csswg.org/suites/css2.1/20101027/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-author
> > s- contributions-css21-testsuite.html
> > 
> > 
> > 
> > --
> > CSS 2.1 Test suite RC3 (October 27th 2010)
> > http://test.csswg.org/suites/css2.1/20101027/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-author
> > s- contributions-css21-testsuite.html



Bert
-- 
  Bert Bos                                ( W 3 C ) http://www.w3.org/
  http://www.w3.org/people/bos                               W3C/ERCIM
  bert@w3.org                             2004 Rt des Lucioles / BP 93
  +33 (0)4 92 38 76 92            06902 Sophia Antipolis Cedex, France
Received on Tuesday, 15 March 2011 23:57:02 GMT

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