flowportview.java

JGraph扩展应用。自定义Renderer,自定义视图View实现自定义工作流控件

/*
 * @(#)MyPortView.java 3.3 23-APR-04
 * 
 * Copyright (c) 2001-2005, Gaudenz Alder All rights reserved.
 * 
 * See LICENSE file in distribution for licensing details of this source file
 */
package flow.graph.gui.graph;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Polygon;
import java.awt.Shape;
import java.awt.geom.Area;
import java.awt.geom.GeneralPath;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.net.URL;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JScrollPane;

import org.jgraph.JGraph;
import org.jgraph.graph.CellViewRenderer;
import org.jgraph.graph.DefaultCellViewFactory;
import org.jgraph.graph.DefaultGraphModel;
import org.jgraph.graph.Port;
import org.jgraph.graph.PortRenderer;
import org.jgraph.graph.PortView;

import flow.graph.gui.graph.item.Triangle2D;

public class FlowPortView extends PortView {

	protected static ImageIcon portIcon = new ImageIcon(GraphManager.class.getResource("images/port1.gif"));

	protected FlowPortRenderer renderer = new FlowPortRenderer();

	public FlowPortView(Object cell) {
		super(cell);
	}

	/** 
	* Returns the bounds for the port view. 
	*/
	public Rectangle2D getBounds() {
		if (portIcon != null) {
			Point2D pt = (Point2D) getLocation().clone();
			int width = portIcon.getIconWidth();
			int height = portIcon.getIconHeight();
			Rectangle2D bounds = new Rectangle2D.Double();
			bounds.setFrame(pt.getX() - width / 2,
							pt.getY() - height / 2,
							width,
							height);
			return bounds;
		}
		return super.getBounds();
	}

	public CellViewRenderer getRenderer() {
		return renderer;
	}

	public static class FlowPortRenderer extends PortRenderer {

		public void paint(Graphics g) {
			/*
			portIcon.paintIcon(this, g, 0, 0);
			super.paint(g);
			*/
			/*
			Dimension d = getSize();
			System.out.println("Size="+d);
			Graphics2D g2 = (Graphics2D) g;
			//Shape sp = new Triangle2D(0, 0, d.width, d.height, false);
			Shape sp = new Polygon();
			boolean tmp = selected;
		    g2.setColor(Color.gray);             // Switch to black
		    g2.draw(sp);                   // Outline the shape with it
			g2.setPaint(new GradientPaint(0, 0,Color.WHITE,d.width, d.height,Color.RED ));
			g2.fill(sp);
			*/
			//super.paint(g);
			Dimension d = getSize();
			//System.out.println("Size="+d);
			if(getSize().width > portIcon.getIconWidth())
				return;
			Graphics2D g2 = (Graphics2D) g;
			int[] x = new int[3];
			int[] y = new int[3];
			x[0] = 5;x[1] = 5;x[2] = 15;
			y[0] = 1;y[1] = 11;y[2] = 11/2;
			Shape sp = new Polygon(x, y, 3);
			g2.fill(sp);
			g2.setPaint(new GradientPaint(0, 0,new Color(203,173,21),d.width, d.height,new Color(203,173,21) ));
			g2.fill(sp);
			
		}
		
		//public void repaint(){};

	}

}