messagetipshell.java

类似于MSN

/*
* 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.shells;

import java.util.LinkedList;
import java.util.ListIterator;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.events.MouseTrackAdapter;
import org.eclipse.swt.events.MouseTrackListener;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.events.ShellAdapter;
import org.eclipse.swt.events.ShellEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Cursor;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;

import edu.tsinghua.lumaqq.IconHolder;
import edu.tsinghua.lumaqq.LumaQQ;
import edu.tsinghua.lumaqq.models.ClusterModel;
import edu.tsinghua.lumaqq.models.FriendModel;
import edu.tsinghua.lumaqq.qq.packets.in.ReceiveIMPacket;

/**
 * <pre>
 * 消息提示窗口，如果主窗口为最小化，且相应的聊天窗口没有打开，则显示提示
 * 其他情况，不显示该窗口
 * </pre>
 * 
 * @author 马若劼
 */
public class MessageTipShell {
	private Shell shell;
	private Display display;
	private Label lblFace;
	private Label lblSetup, lblClusterInfo, lblUserInfo, lblClose, lblMessage;
	private Color background;
	private Cursor handCursor;
	//需要显示的好友或者群model队列
	private LinkedList friendLink;
	// MainShell对象
	private MainShell main;
	// 鼠标按下时，设置此变量为true，表示处于移动窗口状态
	private boolean isMove;
	// 鼠标按下时的位置
	private int downX, downY;
	// 表示消息提示操作是否在进行中的标志
	private boolean on;
	
	// 执行检查需要显示的队列并显示的Runnable对象
	private Runnable showRunnable = new Runnable() {
		public void run() {
		    // model为null，说明没有更多的好友要显示，关闭窗口
		    if(isEmpty()) {
		        if(shell.isVisible()) {
					Point p = display.getCursorLocation();
					// 但是如果这个时候鼠标在窗口之上，不关闭
					//    不在，则关闭
					if(!shell.getBounds().contains(p)) {
					    closeNow();
					    on = false;
					} else
					    display.timerExec(5000, this);		            
		        } else
		            on = false;
		    } else if(shell.isVisible()) {
		        // 如果这个时候鼠标在窗口上，不关闭，否则关闭
		        Point p = display.getCursorLocation();
		        if(!shell.getBounds().contains(p)) 
		            closeNow();
				// 等五秒再调用自己一次
				display.timerExec(500, this);
			} else {
			    Object modelObj = null;
			    while((modelObj = getNextModel()) != null) {
			        if(setModel(modelObj)) break;
			        else continue;
			    }
			    if(modelObj == null) {
			        closeNow();
			        on = false;
			    } else {
			        show();
			        display.timerExec(5000, showRunnable);
			    }
			}
		}
	};
	
	/**
	 * 设置Model信息
	 * @param obj
	 * @return
	 */
	public boolean setModel(Object obj) {
        if(obj instanceof FriendModel) 
            return setFriendModel((FriendModel)obj);
        else
            return setClusterModel((ClusterModel)obj);
	}

	// 鼠标移动到标签上时的事件处理器
	private MouseTrackListener mtl = new MouseTrackAdapter() {
		public void mouseEnter(MouseEvent e) {
		    Control c = (Control)e.getSource();
			c.setForeground(main.display.getSystemColor(SWT.COLOR_YELLOW));
		}

		public void mouseExit(MouseEvent e) {
		    Control c = (Control)e.getSource();
			c.setForeground(main.display.getSystemColor(SWT.COLOR_WHITE));
		}    
	};
	
	/**
	 * 构造函数
	 * @param main
	 */
	public MessageTipShell(MainShell main) {
		// 初始化变量
		this.main = main;
		this.display = main.display;
		background = new Color(display, 0x73, 0x8A, 0xEF);
		handCursor = new Cursor(display, SWT.CURSOR_HAND);
		isMove = false;
		on = false;
		friendLink = new LinkedList();
		// 初始化窗口布局
		initLayout();
	}
	
	/**
	 * 打开窗口
	 */
	public void show() {
	    if(!shell.isVisible()) {
	        // 得到上站通知的显示位置，-1表示缺省
	        int x = main.options.getMessageOnlineTipLocationX();
	        int y = main.options.getMessageOnlineTipLocationY();
		    // 得到屏幕客户区的大小，之所以是客户区是因为任务条之类的东西不计算在内
			Rectangle displayRect = display.getClientArea();
			Point size = shell.getSize();
			// 如果有变量等于-1，采用缺省值
	        if(x == -1)
	            x = displayRect.width - size.x - 2;
	        if(y == -1)
	            y = displayRect.height - size.y - 2;
	        // 设置shell位置
			shell.setLocation(x, y);
			// 设置shell为可见
		    shell.setVisible(true);
			// 这也是为了满足Linux，必须layout
			shell.layout();	        
	    }
	}
	
    /**
     * 初始化窗口布局
     */
    private void initLayout() {
		// 创建tip窗口
		shell = new Shell(display, SWT.ON_TOP | SWT.NO_TRIM);
		shell.setSize(200, 122);
		shell.setLayout(new FormLayout());
		shell.addShellListener(new ShellAdapter() {
			public void shellClosed(ShellEvent e) {
				background.dispose();
				handCursor.dispose();
			}
		});
		shell.addMouseMoveListener(new MouseMoveListener() {
			public void mouseMove(MouseEvent e) {
				if (isMove) {
					Point loc = shell.getLocation();
					int x = loc.x + e.x - downX;
					int y = loc.y + e.y - downY;
					shell.setLocation(x, y);
					main.options.setMessageTipLocationX(x);
					main.options.setMessageTipLocationY(y);
				}
			}
		});
		shell.addMouseListener(new MouseAdapter() {
			public void mouseDown(MouseEvent e) {
				downX = e.x;
				downY = e.y;
				isMove = true;
			}
			public void mouseUp(MouseEvent e) {
				isMove = false;
			}
		});
		shell.addPaintListener(new PaintListener() {
            public void paintControl(PaintEvent e) {
                e.gc.drawImage(main.icons.getResource(IconHolder.bmpMessageTipBackground), 0, 0);
            }
		});
		// 群信息标签
		lblClusterInfo = new Label(shell, SWT.NONE);
		lblClusterInfo.setBackground(background);
		lblClusterInfo.setForeground(display.getSystemColor(SWT.COLOR_WHITE));