iconholder.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;

import java.io.IOException;
import java.io.InputStream;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Properties;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.widgets.Display;

import edu.tsinghua.lumaqq.qq.Utils;

/**
 * 管理图像资源
 */
public class IconHolder {
    // Log
    private static Log log = LogFactory.getLog(IconHolder.class);
    // 使用2003还是2004头像
    private boolean use2004;
    
    // resource id
    public static final int 
		icoOnline = 0,
    	icoAway = 1,
    	icoHidden = 2,
    	icoOffline = 3,
    	icoQQ = 4,
    	icoAbout = 5,
    	icoExit = 6,
    	icoSysMsg = 7,
    	icoSysOpt = 8,
    	icoChangeUser = 9,
    	icoBackground = 10,
		icoPersonInfo = 11,
		bmpLogin = 12,
		icoReply = 13,
		icoNoReply = 14,
		icoCustomReply = 15,
		icoMessage = 16,
		icoFind = 17,
		icoLargeFace = 18,
		icoSmallFace = 19,
		icoAddGroup = 20,
		icoDelGroup = 21,
		icoAddFriend = 22,
		icoShowOnlineOnly = 23,
		icoShowBlackList = 24,
		icoRename = 25,
		icoSortFriend = 26,
		icoDisplayName = 27,
		icoHideBlackList = 28,
		icoChecked = 29,
		icoFriendView = 30,
		icoDelFriend = 31,
		icoSendReceiveMessage = 32,
		icoFont = 33,
		icoSmiley = 34,
		icoQuickReply = 35,
		icoBlank = 36,
		icoArrow = 37,
		bmpSearch = 38,
		icoSendFile = 39,
		icoGroup = 40,
		icoUploadGroup = 41,
		icoDownloadGroup = 42,
		icoMe = 43,
		bmpTipBackground = 44,
		bmpDefaultQQShow = 45,
		bmpDownloading = 46,
		icoMessageManage = 47,
		icoTxtFile = 48,
		icoCopy = 49,
		icoCluster = 50,
		icoSearchCluster = 51,
		icoAddCluster = 52,
		icoFolder = 53, 
		icoRightArrow = 54,
		icoLeftArrow = 55,
		bmpOnlineTipBackground = 56,
		bmpMessageTipBackground = 57,
		icoYes = 58,
		icoNo = 59,
		icoFriend = 60,
		icoApply = 61,
		icoDownloadRemark = 62,
		icoBack = 63,
		icoForward = 64,
		icoRefresh = 65,
		icoStop = 66,
		icoUpdate = 67, 
		icoHomepage = 68,
		bmpCheckUpdate = 69,
		icoSearchIp = 70,
		icoNA = 71;

    // resource location
    public static final String[] resourceLocations = {
        "/icons/online.gif",
        "/icons/away.gif",
        "/icons/hidden.gif",
        "/icons/offline.gif",
        "/icons/qq.gif",
        "/icons/about.gif",
        "/icons/exit.gif",
        "/icons/sysmsg.gif",
        "/icons/sysoption.gif",
        "/icons/changeuser.gif",
        "/icons/bg.gif",
		"/icons/personinfo.gif",
        "/bitmaps/login.gif",
		"/icons/reply.gif",
		"/icons/noreply.gif",
		"/icons/customreply.gif",
		"/icons/message.gif",
		"/icons/find.gif",
		"/icons/largeface.gif",
		"/icons/smallface.gif",
		"/icons/addgroup.gif",
		"/icons/delgroup.gif",
		"/icons/addfriend.gif",
		"/icons/showonlineonly.gif",
		"/icons/showblacklist.gif",
		"/icons/rename.gif",
		"/icons/sortfriend.gif",
		"/icons/displayname.gif",
		"/icons/hideblacklist.gif",
		"/icons/checked.gif",
		"/icons/friendview.gif",
		"/icons/delfriend.gif",
		"/icons/sendreceivemessage.gif",
		"/icons/font.gif",
		"/icons/smiley.gif",
		"/icons/quickreply.gif",
		"/icons/blank.gif",
		"/icons/arrow.gif",
		"/bitmaps/search.gif",
		"/icons/sendfile.gif",
		"/icons/group.gif",
		"/icons/uploadgroup.gif",
		"/icons/downloadgroup.gif",
		"/icons/me.gif",
		"/bitmaps/tipbackground.gif",
		"/bitmaps/defaultqqshow.gif",
		"/bitmaps/downloading.gif",
		"/icons/messagemanage.gif",
		"/icons/txtfile.gif",
		"/icons/copy.gif",
		"/icons/cluster.gif",
		"/icons/searchcluster.gif",
		"/icons/addcluster.gif",
		"/icons/folder.gif",
		"/icons/rightarrow.gif",
		"/icons/leftarrow.gif",
		"/bitmaps/onlinetipbackground.gif",
		"/bitmaps/messagetipbackground.gif",
		"/icons/yes.gif",
		"/icons/no.gif",
		"/icons/friend.gif",
		"/icons/apply.gif",
		"/icons/downloadremark.gif",
		"/icons/back.gif",
		"/icons/forward.gif",
		"/icons/refresh.gif",
		"/icons/stop.gif",
		"/icons/update.gif",
		"/icons/homepage.gif",
		"/bitmaps/checkupdate.gif",
		"/icons/searchip.gif",
		"/icons/na.gif"
    };

    // 存放资源的hash表
    private Hashtable resources;
    // 存放表情映射关系的properties类
    private Properties smileyMap;
    private static IconHolder holder = new IconHolder();
    
    /**
     * 私有构造，singleton模式
     */
    private IconHolder() {
    	this.resources = new Hashtable();
    	this.smileyMap = new Properties();
    	try {
			this.smileyMap.load(this.getClass().getResourceAsStream("/face.properties"));
		} catch (IOException e) {
		    log.error(e.getMessage());
		}
    }

    /**
     * @return 实例
     */
    public static IconHolder getInstance() {
    	return holder;
    }
    
    /**
     * @param imageId 图标id
     * @return 图标
     */
    public Image getResource(int resId) {
    	if(resId < 0 || resId >= resourceLocations.length) return null;
    	return getResource(resourceLocations[resId]);
    }    
    
    /**
     * 得到程序图标
     * @param s 资源路径
     * @return Image
     */
    private Image getResource(String s) {
    	Image ret = (Image)resources.get(s);
    	if(ret == null) {
    		ret = createStockImage(Display.getCurrent(), s);
    		if(ret != null)
    			resources.put(s, ret);
    		return ret;
    	} else
    		return ret;
    }
    
    /**
     * <pre>
     * 得到2003或者2004的头像，2003的头像3种状态都有，2004只有一种，所以处理上
     * 有些不同
     * </pre>
     * @param faceId 头像ID
     * @return 头像Image对象
     */
    public Image getFace(int faceId) {
    	if(faceId < 0 || faceId >= 258) return null;
    	int major = faceId / 3 + 1;
    	int minor = faceId % 3 + 1;
        if(use2004) {
	        String face = "/newface_2004/" + major + ".gif";
	        if(minor == 1)
	            return getResource(face);
	        else if(minor == 2){
	            // 检查cache中是否有不在线头像
	            String faceOffline = face + ".offline";
	            if(resources.containsKey(faceOffline))
	                return getResource(faceOffline);
	            else {
	                // 得到在线图像的灰度图像来用作不在线头像
	                Image image = getResource(face);
	                image = new Image(Display.getCurrent(), image, SWT.IMAGE_GRAY);
	                resources.put(faceOffline, image);
	                return image;
	            }
	        } else {
	            // 检查cache中是否有离开头像
	            String faceAway = face + ".away";
	            if(resources.containsKey(faceAway))
	                return getResource(faceAway);
	            else {
	                // 构建2004风格离开头像
	                Display dispay = Display.getCurrent();
	                Image original = new Image(dispay, getClass().getResourceAsStream(face));
	                Image na = getResource(icoNA);
	                Image image = new Image(dispay, original, SWT.IMAGE_COPY);
	                GC gc = new GC(image);
	                gc.drawImage(na, 12, 21);
	                gc.dispose();	                
	                original.dispose();
	                resources.put(faceAway, image);
	                return image;
	            }
	        }
        } else {            
        	String face = "/newface/" + major + "-" + minor + ".gif";
        	return getResource(face);
        }
    }
    
    /**
     * 得到头像小图标，没办法，在table控件和linux下，居然不会自动缩小，只好再搞一套
     * 小图标
     * @param faceId 头像Id
     * @return 头像
     */
    public Image getSmallFace(int faceId) {
    	if(faceId < 0 || faceId >= 255) return null;
    	int major = faceId / 3 + 1;
    	int minor = faceId % 3 + 1;
    	String face = "/newface_s/" + major + "-" + minor + ".gif";
    	return getResource(face);
    }
    
    /**
     * 得到群组头像图标，如果索引不对则返回null
     * @param faceId 群组头像，目前提供了18张
     * @return 群组头像图标，如果索引不对返回null
     */
    public Image getClusterFace(int faceId) {
    	if(faceId < 1 || faceId > 6) return null;
    	String face = "/clusterface/" + faceId + ".gif";
    	return getResource(face);
    }
    
    /**
     * 得到群组头像小图标，如果索引不对则返回null，没办法，linux下面不会自动缩小
     * @param faceId
     * @return
     */
    public Image getSmallClusterFace(int faceId) {
    	if(faceId < 1 || faceId > 6) return null;
    	String face = "/clusterface/" + faceId + "-1.gif";
    	return getResource(face);
    }
    
    /**
     * 得到表情图标
     * @param smileyId
     * @return
     */
    public Image getSmiley(int smileyId) {
    	String smiley = "/face/" + getSmileySeq(smileyId) + ".gif";
    	return getResource(smiley);
    }

    /**
     * 释放资源
     */
    public void freeResources() {
    	Iterator iter = resources.values().iterator();
    	while(iter.hasNext())
    		((Image)iter.next()).dispose();
    	resources.clear();
    }

    /**
     * @param display
     *            the display
     * @param path
     *            the relative path to the icon
     * 
     * 从文件创建Image对象
     */
    private Image createStockImage(Display display, String path) {
        try {
            InputStream stream = IconHolder.class.getResourceAsStream(path);
            if (stream != null) {
                ImageData imageData = new ImageData(stream);
                if (imageData != null) {
                    ImageData mask = imageData.getTransparencyMask();
                    return new Image(display, imageData, mask);
                }
            }
        } catch (Exception e) {
            log.error(e.getMessage());
        }
        return null;
    }
    
    /**
     * 根据代码，得到表情id，这个id和文件名是等同的，可是直接用getSmiley继续得到Image
     * @param code
     * @return
     */
    private int getSmileySeq(int code) {
    	int ret = Utils.getInt(smileyMap.getProperty(String.valueOf(code)), 0);
    	return ret;
    }
    
    /**
     * @param use2004 The use2004 to set.
     */
    public void setUse2004(boolean use2004) {
        this.use2004 = use2004;
    }
}