Dear all, 

I just published a blog post on how to get geometry of rendered elements—in 
particular calling getBoundingClientRect—by constructing JSON decoders for 
use with Html.Events.on:

https://medium.com/@debois/elm-the-dom-8c9883190d20#.pbwnl4bgl

I needed this for elm-md <https://github.com/debois/elm-mdl>l. If you have 
a similar need, you might like the post, and you might find the the elm-dom 
library <https://github.com/debois/elm-dom> useful. The latter provides 
some ready-made encoders and a substitute for getBoundingClientRect.

I'd appreciate any comments. 

Obviously, the functionality of reading geometry off the DOM, including 
calling getBoundingClientRect, should be provided by Core. It doesn't seem 
to be on the roadmap for the immediate future, though, so in the meantime, 
I thought you might find the above useful. 

Cheers,

Søren

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