textannotationview.java

用JGraph编的软件

package org.jgpd.jgraph;

import java.awt.Color;
import java.awt.BasicStroke;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Polygon;

import org.jgraph.JGraph;
import org.jgraph.graph.CellMapper;
import org.jgraph.graph.CellViewRenderer;
import org.jgraph.graph.GraphConstants;
import org.jgraph.graph.VertexRenderer;
import org.jgraph.graph.VertexView;

public class TextAnnotationView
    extends VertexView {
  public static int default_width = 60;
  public static int default_height = 40;

  public static TextAnnotationRenderer renderer = new TextAnnotationRenderer();

  public TextAnnotationView(Object cell, JGraph graph, CellMapper cm) {
    super(cell, graph, cm);


  }

  public CellViewRenderer getRenderer() {
    return renderer;
  }

  public static class TextAnnotationRenderer
      extends VertexRenderer {

    public void paint(Graphics g) {
      int b = borderWidth;
      Graphics2D g2 = (Graphics2D) g;
      Dimension d = getSize();



      boolean tmp = selected;
      if (super.isOpaque()) {

        g2.setColor(super.getBackground());
      /*  g2.fillRect(b - 1,
                    b - 1,
                    d.width - b,
                    d.height - b
                    );*/

      g2.drawLine(20,0,0,0);
        g2.drawLine(0,0,0,d.height);
        g2.drawLine(0,d.height-1,20,d.height-1);



      }
      try {
        setBorder(null);
        setOpaque(false);
        selected = false;
        super.paint(g);
      }
      finally {
        selected = tmp;
      }

      if (bordercolor != null) {
        g2.setColor(bordercolor);
        g2.setStroke(new BasicStroke(b));
        g2.drawLine(20,0,0,0);
       g2.drawLine(0,0,0,d.height);
        g2.drawLine(0,d.height-1,20,d.height-1);
       //g2.drawLine(0,40,20,40);





      }
      if (selected) {
        g2.setStroke(GraphConstants.SELECTION_STROKE);
        g2.setColor(Color.black);
        //  Polygon poly = new Polygon( polyx, polyy, 6 );
     /*   g2.drawRect(b - 1,
                    b - 1,
                    d.width - b,
                    d.height - b
                    );*/
     g2.drawLine(20,0,0,0);
       g2.drawLine(0,0,0,d.height);
      //  g2.drawLine(0,d.height,20,d.height);
    g2.drawLine(0,d.height-1,20,d.height-1);


      }
    }
  }
}