itemmousetracklistener.java

java写的qq代码实现qq的部分功能

/*
* LumaQQ - Java QQ Client
*
* Copyright (C) 2004 luma <[e-mail]>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package edu.tsinghua.lumaqq.events;

import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseTrackAdapter;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import edu.tsinghua.lumaqq.models.ClusterModel;
import edu.tsinghua.lumaqq.models.FriendModel;
import edu.tsinghua.lumaqq.ui.FriendTipShell;
import edu.tsinghua.lumaqq.ui.MainShell;
import edu.tsinghua.lumaqq.utils.OptionUtil;
import edu.tsinghua.swt.widgets.CoolButton;

/**
 * 好友的鼠标跟踪事件，用于显示一个tip窗口
 * 
 * @author 马若劼
 */
public class ItemMouseTrackListener extends MouseTrackAdapter {	
    private MainShell main;
	
	/**
	 * 构造函数
	 * @param main
	 */
	public ItemMouseTrackListener(MainShell main) {
	    this.main = main;
	}
		
	/* (non-Javadoc)
	 * @see org.eclipse.swt.events.MouseTrackListener#mouseExit(org.eclipse.swt.events.MouseEvent)
	 */
	public void mouseExit(MouseEvent e) {
		// 如果当前设置了不显示tip，返回
		OptionUtil options = OptionUtil.getInstance();
		if(!options.isShowTip()) return;
		// 设置在1.5秒后关闭提示窗口
		if(main.getTipHelper().isFriendTipShellVisible())
			main.getTipHelper().getFriendTipShell().setShouldClose(true);
	}
	
	/* (non-Javadoc)
	 * @see org.eclipse.swt.events.MouseTrackListener#mouseHover(org.eclipse.swt.events.MouseEvent)
	 */
	public void mouseHover(MouseEvent e) {
		// 如果当前设置了不显示tip，返回
		OptionUtil options = OptionUtil.getInstance();
		if(!options.isShowTip()) return;
		// 得到好友提示窗口
		FriendTipShell tipShell = main.getTipHelper().getFriendTipShell();
		// 设置关闭标志为false
		tipShell.setShouldClose(false);
		// 得到好友model
		CoolButton viewPart = (CoolButton)e.getSource();
		Object modelObj = viewPart.getData();
		// 根据model是群还是好友，做出不同的动作
		if(modelObj instanceof ClusterModel)
		    tipShell.setClusterTip((ClusterModel)modelObj);
		else 
		    tipShell.setFriendTip((FriendModel)modelObj);			
		// 添加model到tipShell的Data中
		tipShell.setData(modelObj);
		// 调整窗口的位置，然后显示
		Point p = viewPart.toDisplay(e.x, e.y);
		Rectangle mainBound = main.getShell().getBounds();
		p.x = mainBound.x - 260;
		if(p.x < 0)
			p.x = mainBound.x + mainBound.width + 10;
		tipShell.setLocation(p);
		tipShell.setVisible(true);
		// 这也是为了满足Linux，必须layout
		tipShell.setSize(250, 160);
		tipShell.layout();
	}
}