defaultgraphportview.java

来自「jawe的最新版本,基于Java的图形化工作流编辑器。图形化工作流编辑器 。使用」· Java 代码 · 共 75 行

package org.enhydra.jawe.components.graph;

import java.awt.Dimension;
import java.awt.geom.Rectangle2D;
import java.util.HashMap;
import java.util.Map;

import org.jgraph.graph.AttributeMap;
import org.jgraph.graph.CellViewRenderer;
import org.jgraph.graph.GraphConstants;

/**
 * Represents a view for a Port object.
 *
 * @author Sasa Bojanic
 */
public class DefaultGraphPortView extends GraphPortViewInterface {

   protected static Map renderers = new HashMap();
   
   public DefaultGraphPortView(Object cell) {
		super(cell);
		AttributeMap map = new AttributeMap();
		GraphConstants.setSize(map, new Dimension(30, 30));            
		super.setAttributes(map);
	}

	/**
	 * Sets size of all ports to given value.
	 */
	public void setPortSize(Dimension d) {
		if (SIZE < 2) SIZE = 2;      
		AttributeMap map = new AttributeMap();
		GraphConstants.setSize(map, d);
		super.setAttributes(map);
	}

   /**
	 * Returns port's size.
	 */
   public Dimension getPortSize () {
      return (Dimension)getAttributes().get(GraphConstants.SIZE);
   }

   public GraphActivityInterface getGraphActivity () {
      return (GraphActivityInterface)getParentView().getCell();
   }
   
   public CellViewRenderer getRenderer() {
      String type=((GraphPortInterface)super.getCell()).getType();
      GraphPortRendererInterface gprenderer=(GraphPortRendererInterface)renderers.get(type);
      if (gprenderer==null) {
         gprenderer=createRenderer(type);
         renderers.put(type,gprenderer);
      }
      return gprenderer;
   }

   public Rectangle2D getBounds() {  
   	AttributeMap map = new AttributeMap();
      Rectangle2D bounds = map.createRect(getLocation());
      bounds.setFrame(
         bounds.getX() - getPortSize().width / 2,
         bounds.getY() - getPortSize().height / 2,
         bounds.getWidth() + getPortSize().width,
         bounds.getHeight() + getPortSize().height);
      return bounds;
   } 
   
   protected GraphPortRendererInterface createRenderer (String type) {
      return GraphUtilities.getGraphController().getGraphObjectRendererFactory().createPortRenderer(type);
   }
   
}