protected void animateOffsetTo(int position, int duration) {
final int startX = (int) mOffsetPixels;
final int dx = position - startX;
if (dx > 0) {
setDrawerState(STATE_OPENING);
mScroller.startScroll(startX, 0, dx, 0, duration);
} else {
setDrawerState(STATE_CLOSING);
mScroller.startScroll(startX, 0, dx, 0, duration);
}
startLayerTranslation();
postAnimationInvalidate();
}
/**
* Moves the drawer to the position passed.
*
* @param position The position the content is moved to.
* @param velocity Optional velocity if called by releasing a drag event.
* @param animate Whether the move is animated.
*/
protected void animateOffsetTo(int position, int velocity, boolean animate) {
endDrag();
endPeek();
final int startX = (int) mOffsetPixels;
final int dx = position - startX;
if (dx == 0 || !animate) {
setOffsetPixels(position);
setDrawerState(position == 0 ? STATE_CLOSED : STATE_OPEN);
stopLayerTranslation();
return;
}
int duration;
velocity = Math.abs(velocity);
if (velocity > 0) {
duration = 4 * Math.round(1000.f * Math.abs((float) dx / velocity));
} else {
duration = (int) (600.f * Math.abs((float) dx / mMenuSize));
}
duration = Math.min(duration, mMaxAnimationDuration);
if (dx > 0) {
setDrawerState(STATE_OPENING);
mScroller.startScroll(startX, 0, dx, 0, duration);
} else {
setDrawerState(STATE_CLOSING);
mScroller.startScroll(startX, 0, dx, 0, duration);
}
startLayerTranslation();
postAnimationInvalidate();
}
