onClick on listview example broken about react-canvas

[brentvatne]

I investigated this and found that because it is because translateY is used in the listview and the current hit detection mechanism only incorporates thetop and left styles. So all of the items appeared to be in the top position, and the last one was always considered to be clicked. I modified this to add a hitFrame property to layers in order to incorporate the sum of the current layer and parent layers' X/Y translations and it now works as expected on both examples. Open to a more elegant solution, of course.

See my attempt at a fix in this commit

[amullins83]

#23 worked for me.

[mjohnston]

Argh - the hit detection code must not have been completely moved into react-canvas from flipboard.com.

@brentvatne Thanks for investigating. You're precisely right! Though I think we can do the frame resolution at hit test. Fix incoming.