NodeBorder.java

package org.nightlabs.jfire.reporting.admin.parameter.ui.figure;

import org.eclipse.draw2d.AbstractBorder;
import org.eclipse.draw2d.ColorConstants;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.geometry.Insets;
import org.eclipse.draw2d.geometry.PointList;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.swt.graphics.Color;

/**
 * @author Daniel.Mazurek [at] NightLabs [dot] de
 */
public class NodeBorder
extends AbstractBorder
{
	protected static final PointList connector = new PointList();
	protected static final PointList bottomConnector = new PointList();
	
	static {
		connector.addPoint(-2, 0);
		connector.addPoint(1, 0);
		connector.addPoint(2, 1);
		connector.addPoint(2, 5);
		connector.addPoint(-1, 5);
		connector.addPoint(-1, 1);

		bottomConnector.addPoint(-2, -1);
		bottomConnector.addPoint(1, -1);
		bottomConnector.addPoint(2, -2);
		bottomConnector.addPoint(2, -6);
		bottomConnector.addPoint(-1, -6);
		bottomConnector.addPoint(-1, -2);
	}
	
	public Insets getInsets(IFigure figure) {
		return new Insets(0,0,0,0);
	}

	protected Color connectorColor = ColorConstants.lightGray;
	public void setConnectorColor(Color c) {
		connectorColor = c;
	}
	
	protected Color fillColor = ColorConstants.darkGray;
	public void setFillColor(Color c) {
		fillColor = c;
	}
	
	public void paint(IFigure figure, Graphics g, Insets in)
	{
		Rectangle r = figure.getBounds().getCropped(in);
		
		g.setForegroundColor(fillColor);
		g.setBackgroundColor(fillColor);
		
		//Draw the sides of the border
		g.fillRectangle(r.x, r.y + 2, r.width, 6);
		g.fillRectangle(r.x, r.bottom() - 8, r.width, 6);
		g.fillRectangle(r.x, r.y + 2, 6, r.height - 4);
		g.fillRectangle(r.right() - 6, r.y + 2, 6, r.height - 4);

		//Outline the border
		g.setForegroundColor(connectorColor);
		g.drawLine(r.x, r.y + 2, r.right() - 1, r.y + 2);
		g.drawLine(r.x, r.bottom() - 3, r.right() - 1, r.bottom() - 3);
		g.drawLine(r.x, r.y + 2, r.x, r.bottom() - 3);
		g.drawLine(r.right() - 1, r.bottom() - 3, r.right() - 1, r.y + 2);
		
		r.crop(new Insets(1, 1, 0, 0));
		r.expand(1, 1);
		r.crop(getInsets(figure));
		
		drawConnectors(g, figure.getBounds().getCropped(in));
	}

	protected void drawConnectors(Graphics g, Rectangle rec)
	{
		int y1 = rec.y;
		int width = rec.width,x1;
		int bottom = y1 + rec.height;
		g.setBackgroundColor(connectorColor);
		for (int i = 0; i < 4; i++) {
			x1 = rec.x + (2 * i + 1) * width / 8;
			
//			//Draw the "gap" for the connector
//			g.setForegroundColor(fillColor);
//			g.drawLine(x1 - 2, y1 + 2, x1 + 3, y1 + 2);
			
			//Draw the connectors
			g.setForegroundColor(connectorColor);
			connector.translate(x1, y1);
			g.fillPolygon(connector);
			g.drawPolygon(connector);
			
			connector.translate(-x1, -y1);
			g.setForegroundColor(ColorConstants.listBackground);
			g.drawLine(x1 - 2, bottom - 3, x1 + 3, bottom - 3);
			g.setForegroundColor(connectorColor);
			
			bottomConnector.translate(x1, bottom);
			g.fillPolygon(bottomConnector);
			g.drawPolygon(bottomConnector);
			bottomConnector.translate(-x1, -bottom);
		}
	}
	
}