[Webkit-unassigned] [Bug 64593] New: Add 2D transform-origin "baseline"

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=64593

           Summary: Add 2D transform-origin "baseline"
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Enhancement
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jon.rimmer at gmail.com


When using 2D transforms to animate text it is often desirable to have the origin of the transform be the baseline of the text rather than the edge of the surrounding block. This kind of animation is called "kinetic typography"[1]. It has long been used extensively in movie credits and title sequences, and has recently been seen increasing use in popular culture:

http://vimeo.com/channels/kinetictypography
http://www.youtube.com/watch?v=timfvNgr_Q4 
http://www.youtube.com/watch?v=CAV0XrbEwNc&list=UUWOCaSShY1wU

I have made this suggestion previously on the W3C's www-style mailing list [2] and it received a positive response, so I am raising this as a proposed enhancement for Webkit in the hope of getting an experimental implementation that will drive standardisation and wider adoption.

I believe this would be a very useful feature, and enable a lot of use-cases around animated type for which authors resort to plugin and pre-rendered video.

[1] http://en.wikipedia.org/wiki/Kinetic_typography
[2] http://lists.w3.org/Archives/Public/www-style/2011Feb/0582.html

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