mxcelltracker.java

来自「经典的java图像处理程序源码」· Java 代码 · 共 105 行

/**
 * $Id: mxCellTracker.java,v 1.1 2009/04/05 09:22:44 gaudenz Exp $
 * Copyright (c) 2008, Gaudenz Alder
 */
package com.mxgraph.swing.handler;

import java.awt.Color;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;

import com.mxgraph.swing.mxGraphComponent;

/**
 * Event handler that highlights cells. Inherits from mxCellMarker.
 */
public class mxCellTracker extends mxCellMarker implements MouseListener,
		MouseMotionListener
{

	/**
	 * Constructs an event handler that highlights cells.
	 */
	public mxCellTracker(mxGraphComponent graphComponent, Color color)
	{
		super(graphComponent, color);

		graphComponent.getGraphControl().addMouseListener(this);
		graphComponent.getGraphControl().addMouseMotionListener(this);
	}

	/**
	 * 
	 */
	public void destroy()
	{
		graphComponent.getGraphControl().removeMouseListener(this);
		graphComponent.getGraphControl().removeMouseMotionListener(this);
	}

	/*
	 * (non-Javadoc)
	 * @see java.awt.event.MouseListener#mouseClicked(java.awt.event.MouseEvent)
	 */
	public void mouseClicked(MouseEvent e)
	{
		// empty
	}

	/*
	 * (non-Javadoc)
	 * @see java.awt.event.MouseListener#mouseEntered(java.awt.event.MouseEvent)
	 */
	public void mouseEntered(MouseEvent e)
	{
		// empty
	}

	/*
	 * (non-Javadoc)
	 * @see java.awt.event.MouseListener#mouseExited(java.awt.event.MouseEvent)
	 */
	public void mouseExited(MouseEvent e)
	{
		// empty
	}

	/*
	 * (non-Javadoc)
	 * @see java.awt.event.MouseListener#mousePressed(java.awt.event.MouseEvent)
	 */
	public void mousePressed(MouseEvent e)
	{
		// empty
	}

	/*
	 * (non-Javadoc)
	 * @see java.awt.event.MouseListener#mouseReleased(java.awt.event.MouseEvent)
	 */
	public void mouseReleased(MouseEvent e)
	{
		reset();
	}

	/*
	 * (non-Javadoc)
	 * @see java.awt.event.MouseMotionListener#mouseDragged(java.awt.event.MouseEvent)
	 */
	public void mouseDragged(MouseEvent e)
	{
		// empty
	}

	/*
	 * (non-Javadoc)
	 * @see java.awt.event.MouseMotionListener#mouseMoved(java.awt.event.MouseEvent)
	 */
	public void mouseMoved(MouseEvent e)
	{
		process(e);
	}

}