连接点PathFigure
连接点从PolylineConnection继承下来，在构造函数中设置目标对象连接点的装饰类，也就是示例中的三角形（PolylineDecoration），以及设定连接线路由样式，这里设置为ManhattanConnectionRouter
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public class PathFigure extends PolylineConnection { |
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public PathFigure() { |
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//setSourceDecoration(new PolygonDecoration()); |
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setTargetDecoration(new PolylineDecoration()); |
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//setConnectionRouter(new BendpointConnectionRouter()); |
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setConnectionRouter(new ManhattanConnectionRouter()); |
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|
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} |
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} |
监听移动事件
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public class Dnd extends MouseMotionListener.Stub implements MouseListener { |
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public Dnd(IFigure figure) { |
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figure.addMouseMotionListener(this); |
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figure.addMouseListener(this); |
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} |
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|
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Point start; |
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|
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public void mouseReleased(MouseEvent e) { |
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} |
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|
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public void mouseClicked(MouseEvent e) { |
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} |
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|
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public void mouseDoubleClicked(MouseEvent e) { |
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} |
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|
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public void mousePressed(MouseEvent e) { |
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start = e.getLocation(); |
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} |
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|
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public void mouseDragged(MouseEvent e) { |
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Point p = e.getLocation(); |
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Dimension d = p.getDifference(start); |
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start = p; |
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Figure f = ((Figure) e.getSource()); |
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f.setBounds(f.getBounds().getTranslated(d.width, d.height)); |
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} |
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} |
Flowchart
Flowchart是主程序代码，生成最上图所示的所有图例、连接，并把连接于连接点关联起来，并加入监听移动事件对象
参考：Draw2D教程
本文转自 陈本峰 51CTO博客，原文链接：http://blog.51cto.com/zhoujg/516882，如需转载请自行联系原作者
