Merge "Fix huge bounce-back in ListView when double-flinging" into mnc-dev

            // mStartTime has been set

            mFinished = false;

            mState = CUBIC;

            mStart = start;

            mCurrentPosition = mStart = start;

            mFinal = end;

            final int delta = start - end;

            mDeceleration = getDeceleration(delta);

        private void fitOnBounceCurve(int start, int end, int velocity) {

            // Simulate a bounce that started from edge

            final float durationToApex = - velocity / mDeceleration;

            final float distanceToApex = velocity * velocity / 2.0f / Math.abs(mDeceleration);

            // The float cast below is necessary to avoid integer overflow.

            final float velocitySquared = (float) velocity * velocity;

            final float distanceToApex = velocitySquared / 2.0f / Math.abs(mDeceleration);

            final float distanceToEdge = Math.abs(end - start);

            final float totalDuration = (float) Math.sqrt(

                    2.0 * (distanceToApex + distanceToEdge) / Math.abs(mDeceleration));

        private void onEdgeReached() {

            // mStart, mVelocity and mStartTime were adjusted to their values when edge was reached.

            float distance = mVelocity * mVelocity / (2.0f * Math.abs(mDeceleration));

            // The float cast below is necessary to avoid integer overflow.

            final float velocitySquared = (float) mVelocity * mVelocity;

            float distance = velocitySquared / (2.0f * Math.abs(mDeceleration));

            final float sign = Math.signum(mVelocity);

            if (distance > mOver) {

                // Default deceleration is not sufficient to slow us down before boundary

                 mDeceleration = - sign * mVelocity * mVelocity / (2.0f * mOver);

                 mDeceleration = - sign * velocitySquared / (2.0f * mOver);

                 distance = mOver;

            }