- From: Christian Sciberras <uuf6429@gmail.com>
- Date: Thu, 4 Aug 2011 10:40:56 +0200
- To: www-style@w3.org
========= Introduction ========= This issue has been previously covered here: http://www.w3.org/Style/CSS/Tracker/issues/9 I believe the example used does not highlight the importance of such a feature. While this feature will most certainly be useful, Another reason it should be add is for the sake of completeness. Without further ado, I'd like to show a specific example where this would excel (and an example on how it would work in the current situation). Note: The image in question looks like: http://dragoninteractive.com/lib/i/navigation/sprite.jpg ========= Example with background-position[x|y] ========= /* button states */ ..menu a { background: no-repeat url('menu.png') top; } ..menu a:hover { background-position-y: -70px; } ..menu a:active { background-position-y: -140px; } /* button images */ ..menu a.home { background-position-x: 0; } ..menu a.services { background-position-x: -102px; } ..menu a.portfolio { background-position-x: -204px; } /* ... */ ========= Same example but with background-position ========= /* button states */ ..menu a { background: no-repeat url('menu.png'); } /* button images+states */ ..menu a.home { background-position: 0 0; } ..menu a.home:hover { background-position: 0 -70px; } ..menu a.home:active { background-position: 0 -140px; } ..menu a.services { background-position: -102px 0; } ..menu a.services:hover { background-position: -102px -70px; } ..menu a.services:active { background-position: -102px -140px; } ..menu a.portfolio { background-position: -204px 0; } ..menu a.portfolio:hover { background-position: -204px -70px; } ..menu a.portfolio:active { background-position: -204px -140px; } /* ... */ ========= Conclusion ========= - Without background-position-[x|y], there is a lot more code and more room for error. - State positions cannot be separated from type/subject positions. - Code is significantly larger to replace this feature. I sincerely believe this should be added to the spec. That said, I do acknowledge this is very late. Such a thing should have been supported since the dawn of time. While considering this message, please, be a little bit practical.
Received on Thursday, 4 August 2011 14:57:58 UTC