prefuse比jung效果好点。于是,研究几天的jung放弃,用prefuse,有经验的同志帮帮忙!有没有实例。。
prefuse是一个用户界面工具包,能够帮助建立互动性强的信息可视化应用程序。
Prefuse提供设备,数据管理,空间布局,颜色,大小和形状编码,渲染,缩放,动画,搜索和互动。此外,它会尝试这样做了模块化的方式,使用户能够拼凑所需功能,以建立自定义的可视化应用。
public static final String driverName = "com.microsoft.jdbc.sqlserver.SQLServerDriver";
public static final String dbURL = "jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=Mypaper";
public static final String userName = "sa";
public static final String userPwd = "123456";
private Graph graph=null; //将可视化化需要的数据读入prefuse内部的数据结构,此例选择的是内部的graph结构
DatabaseDataSource datasrc = null;
DatabaseDataSource datasrc = null;
//create a table of data
try
{
datasrc = ConnectionFactory.getDatabaseConnection(
driverName, dbURL, userName, userPwd);
} catch (SQLException e) {
// There was an error connecting to the database
e.printStackTrace();
return;
} catch (ClassNotFoundException e) {
// The database driver class was not found
e.printStackTrace();
return;
}
try
{
Table nodes = datasrc.getData("select * from test_node");
Table edges = datasrc.getData("select * from test_edge");
Graph graph = new Graph(nodes, edges, false,"id", "sid1", "tid");
//创建一个可视化图的抽象概念(内部存储的数据结构)
//此结构包括原始数据域和新的可视化信息,如:x,y坐标,颜色,大小
Visualization vis = new Visualization();
vis.add("graph", graph);
System.out.println("3");
//render和render工厂,用来传递数据
LabelRenderer r = new LabelRenderer("name"); //使用name来创建带有标签的节点
r.setRoundedCorner(8, 8);
vis.setRendererFactory(new DefaultRendererFactory(r)); //决定图形怎么画的主要工具
//数据处理动作,高于前面的visualization处理
int[] palette = new int[] {
ColorLib.rgb(255,180,180), ColorLib.rgb(190,190,255)
};
DataColorAction fill = new DataColorAction("graph.nodes", "gender",
Constants.NOMINAL, VisualItem.FILLCOLOR, palette);
ColorAction textColor = new ColorAction("graph.nodes",
VisualItem.TEXTCOLOR, ColorLib.gray(0));
ColorAction edgesColor = new ColorAction("graph.edges",
VisualItem.STROKECOLOR, ColorLib.gray(200));
ActionList color = new ActionList(); //用来将前面的数据处理动作集合在一起
color.add(fill);
color.add(textColor);
color.add(edgesColor);
ActionList layout = new ActionList(Activity.INFINITY);
layout.add(new ForceDirectedLayout("graph"));
layout.add(new RepaintAction());
vis.putAction("color", color);
vis.putAction("layout", layout);
//显示和交互控制
Display d = new Display(vis); //显示可视化数据
d.setSize(250, 300);
d.addControlListener(new DragControl());
d.addControlListener(new PanControl());
d.addControlListener(new ZoomControl());
d.addControlListener(new NeighborHighlightControl());
//显示出可视化效果
JFrame frame = new JFrame("Prefuse");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// frame.setSize(800, 600);
frame.add(d);
// frame.setVisible(true);
int width = 300;
int height = 400;
//获得容器
Container container = frame.getContentPane();
vis.run("color");
vis.run("layout");
shell.setSize(new Point(width, height));
shell.setLayout(new FillLayout());
shell.setText("Prefuse in SWT");
// 新建swt组件
Composite composite = new Composite(shell, SWT.NO_BACKGROUND
| SWT.EMBEDDED);
// 注入组件,并返回为frame
Frame frm = SWT_AWT.new_Frame(composite);
// 加载容器
frm.add(container);
// 打开shell
shell.open();
} catch ( DataIOException e) {
// something went wrong :{
e.printStackTrace();
return;
}