             lastPanPoint = nil
         }
 
+        // MARK: 鼠标移动事件
+        
         override func mouseMoved(with event: NSEvent) {
             
             NSCursor.crosshair().set()

            addTrackingArea(trackingArea)
        }
        
        override func mouseDown(with event: NSEvent) {
            
            lastPanPoint = convert(event.locationInWindow, from: nil)
        }
        

                accessoryValueView.currentValueDrawPoint = convert(location, to: accessoryView)
            }
            
            // 调整十字线位置
            indicatorHorizontalView.snp.updateConstraints({ (make) in
                make.top.equalTo(location.y)
            })
