src/utils/Scroller.js
function(factor, animate, originLeft, originTop, callback) {

      let self = this

      self.zoomTo(self.__zoomLevel * factor, animate, originLeft, originTop, callback)

    }
function(factor, animate, originLeft, originTop, callback) {

      let self = this

      self.zoomTo(self.__zoomLevel * factor, animate, originLeft, originTop, callback)

    }
function ( factor , animate , originLeft , originTop , callback ) { let self = this self . zoomTo ( self . __zoomLevel * factor , animate , originLeft , originTop , callback ) }
Zooms the content by the given factor.

@param factor {Number} Zoom by given factor
@param animate {Boolean ? false} Whether to use animation
@param originLeft {Number ? 0} Zoom in at given left coordinate
@param originTop {Number ? 0} Zoom in at given top coordinate
@param callback {Function ? null} A callback that gets fired when the zoom is complete.
Zooms the content by the given factor .