// Starts the fling animation. Called both as a response to a fling gesture and as via the
// public WebView#flingScroll(int, int) API.
public void flingScroll(int velocityX, int velocityY) {
final int scrollX = mDelegate.getContainerViewScrollX();
final int scrollY = mDelegate.getContainerViewScrollY();
final int rangeX = computeMaximumHorizontalScrollOffset();
final int rangeY = computeMaximumVerticalScrollOffset();
mScroller.fling(scrollX, scrollY, velocityX, velocityY, 0, rangeX, 0, rangeY);
mDelegate.invalidate();
}
// Called immediately before the draw to update the scroll offset.
public void computeScrollAndAbsorbGlow(OverScrollGlow overScrollGlow) {
final boolean stillAnimating = mScroller.computeScrollOffset();
if (!stillAnimating) return;
final int oldX = mDelegate.getContainerViewScrollX();
final int oldY = mDelegate.getContainerViewScrollY();
int x = mScroller.getCurrX();
int y = mScroller.getCurrY();
int rangeX = computeMaximumHorizontalScrollOffset();
int rangeY = computeMaximumVerticalScrollOffset();
if (overScrollGlow != null) {
overScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY, mScroller.getCurrVelocity());
}
// The mScroller is configured not to go outside of the scrollable range, so this call
// should never result in attempting to scroll outside of the scrollable region.
scrollBy(x - oldX, y - oldY);
mDelegate.invalidate();
}