
 <code>previousScale</code>, <code>translate</code> and
 <code>previousTranslate</code> properties contain the new and previous scale
 and translate, respectively.
 
 mxEvent.SCALE fires after the scale was changed in setScale. The
 <code>scale</code> and <code>previousScale</code> properties contain the new
 and previous scale.
 
 mxEvent.TRANSLATE fires after the translate was changed in setTranslate. The
 <code>translate</code> and <code>previousTranslate</code> properties contain
 the new and previous 