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08fce0e905
This introduces an AnimationPerformance class, which is intended to manage an animation (or its reverse), with the ability to manually control the timeline or to apply a force to advance the animation with a diminishing speed. I'm having trouble fitting the odeon model to Sky. Odeon has a lot of nice properties, but fundamentally operates on UINodes, which contain all the properties to be animated. Sky, on the other hand, has no such universal properties. Instead, each Widget assembles itself how it sees fit. So my current plan is to let AnimationPerformance own a generic set of AnimatedVariables. You pass it a bag of things, say position and opacity, as AnimatedVariables. It updates them based on the animation, and they each have a way to build a widget based on their current state. R=abarth@chromium.org Review URL: https://codereview.chromium.org/1211603003.
Sky Engine
This directory contains the bulk of the C++ code backing the
dart:sky module.
It is based on Blink, Chromium's rendering engine, which itself is descended from WebKit, which is descended from KHTML.