Dragdealer does not take into account scale() css3 transform when calculating handle positions

[TheGuardianWolf]

So I have a project I am working on that uses reveal.js. Reveal automatically applies a scaling transform to the whole slide for responsiveness.

Using dragdealer inside a slide results in an ever increasing deviation in the handle away from your mouse location when dragging from the start position.

I don't have too much js experience but I've put together a quick hack for my particular issue, which may help explain this if my explanation above isn't as clear as I thought it was.

renderHandlePosition: function() {

    var transform = '';
    if (this.options.css3 && StylePrefix.transform) {
      if (this.options.horizontal) {
          console.log(typeof this.offset.current[0]);
        transform += 'translateX(' + (this.offset.current[0] / 0.817006) + 'px)'; // Divide by scaling value to get correct offset.
      }
      if (this.options.vertical) {
        transform += ' translateY(' + this.offset.current[1] + 'px)';
      }
      this.handle.style[StylePrefix.transform] = transform;
      return;
    }

    if (this.options.horizontal) {
      this.handle.style.left = this.offset.current[0] + 'px';
    }
    if (this.options.vertical) {
      this.handle.style.top = this.offset.current[1] + 'px';
    }
  }

UPDATE Apparently this messes up the bounds and makes the handle able to extend out from the right boundary. Back to square one.