I am currently using easel.js (create.js) on my polymer 1.0+ site to handle 
rendering of shapes on the html canvas, and I'm handling mouse events using 
"pressmove", "mousedown" and "pressup" on those shapes within the canvas. 
 Everything is working well with the mouse.  However, drag and dropping of 
those shapes on mobile devices doesn't work.  A tap and drag with the 
finger on a touch enable device instead scrolls the page itself (which does 
need to be scrollable).  Is there a way to prevent polymer scrolling of the 
page when the user taps on the canvas or one of the shapes within the 
canvas itself? 

Here is the SO question if you prefer to answer it there:  
http://stackoverflow.com/questions/35786299/how-to-prevent-polymer-scrolling-page-on-touch-screen-during-touch-drag-and-drop

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