tolerance option need to discuss
Author: icaiCreated Dec 12, 2020Updated Dec 12, 2020
must draw a ratio(h/w > ??) rectangle to open the slidemenu.
rect.w = (e.pageX - this.offsetLeft) - rect.startX;
rect.h = (e.pageY - this.offsetTop) - rect.startY;
ratio = rect.h /rect.w > ?? && Math.abs(self._currentOffsetX) > self._tolerance
Source: Mango/slideout