Borrowing Android's Touch Resampling Algorithm?

In my search to find out how to make dragging and scrolling smooth on Android, I've come across an interesting article:

It describes Android's technique for smoothing UI touch events, and points to some code here:


I've started trying to implement component position smoothing but its proving difficult. Cant see how to intercept and alter MouseEvents for a component. (Currently got smoothed position and MouseEvents fighting each other)

Perhaps we can borrow from Android here? 

We are currently looking at a good way to achieve this together with more complete support for gestures. 

After a couple days hacking and trying to mimic this with a ComponentListener ComponentAnimator, I've come to the conclusion that this is not what my issue is about.

Its something to do with heavy draw calls - if a drag is over component(s), or a scrolling viewport is over a certain size, then there is a noticeable lag (even with OpenGL rendering).  

You can see this in the Window part of the JUCE Demo. If the window is over empty space it is smooth; move it over another window or component and the whole UI slows down and becomes laggy. 


@fabian - thanks, glad you guys are looking at it as I feel this is an important issue for Android development with JUCE, and its been bugging me recently - hence spending time seeing if I can fix it myself! 

As long as I know its being looked at (along with gestures) then I can get back to focussing on the main functionality of my app.  


EDIT: I dont know if this is helpful or relevant as its quite old now, but seems to be a similar issue: