/*
* Copyright 2011 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.planner.examples.tsp.swingui;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.image.BufferedImage;
import javax.swing.ImageIcon;
import javax.swing.JPanel;
import org.drools.planner.examples.common.swingui.TangoColors;
import org.drools.planner.examples.common.swingui.latitudelongitude.LatitudeLongitudeTranslator;
import org.drools.planner.examples.tsp.domain.City;
import org.drools.planner.examples.tsp.domain.Domicile;
import org.drools.planner.examples.tsp.domain.Visit;
import org.drools.planner.examples.tsp.domain.TravelingSalesmanTour;
/**
* TODO this code is highly unoptimized
*/
public class TspWorldPanel extends JPanel {
private static final int TEXT_SIZE = 8;
private final TspPanel tspPanel;
private BufferedImage canvas = null;
private LatitudeLongitudeTranslator translator = null;
private ImageIcon europaBackground;
public TspWorldPanel(TspPanel tspPanel) {
this.tspPanel = tspPanel;
addComponentListener(new ComponentAdapter() {
@Override
public void componentResized(ComponentEvent e) {
// TODO Not thread-safe during solving
TravelingSalesmanTour travelingSalesmanTour = TspWorldPanel.this.tspPanel.getTravelingSalesmanTour();
if (travelingSalesmanTour != null) {
resetPanel(travelingSalesmanTour);
}
}
});
addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
if (translator != null) {
double longitude = translator.translateXToLongitude(e.getX());
double latitude = translator.translateYToLatitude(e.getY());
TspWorldPanel.this.tspPanel.insertCityAndVisit(longitude, latitude);
}
}
});
europaBackground = new ImageIcon(getClass().getResource(
"/org/drools/planner/examples/tsp/swingui/europaBackground.png"));
}
public void resetPanel(TravelingSalesmanTour travelingSalesmanTour) {
translator = new LatitudeLongitudeTranslator();
for (City city : travelingSalesmanTour.getCityList()) {
translator.addCoordinates(city.getLatitude(), city.getLongitude());
}
Dimension size = getSize();
double width = size.getWidth();
double height = size.getHeight();
translator.prepareFor(width, height);
Graphics g = createCanvas(width, height);
String tourName = travelingSalesmanTour.getName();
if (tourName.startsWith("europe")) {
g.drawImage(europaBackground.getImage(), 0, 0, translator.getImageWidth(), translator.getImageHeight(), this);
}
g.setFont(g.getFont().deriveFont((float) TEXT_SIZE));
g.setColor(TangoColors.PLUM_2);
for (Visit visit : travelingSalesmanTour.getVisitList()) {
City city = visit.getCity();
int x = translator.translateLongitudeToX(city.getLongitude());
int y = translator.translateLatitudeToY(city.getLatitude());
g.fillRect(x - 1, y - 1, 3, 3);
if (city.getName() != null) {
g.drawString(city.getName(), x + 3, y - 3);
}
}
g.setColor(TangoColors.ALUMINIUM_4);
for (Domicile domicile : travelingSalesmanTour.getDomicileList()) {
City city = domicile.getCity();
int x = translator.translateLongitudeToX(city.getLongitude());
int y = translator.translateLatitudeToY(city.getLatitude());
g.fillRect(x - 2, y - 2, 5, 5);
if (city.getName() != null) {
g.drawString(city.getName(), x + 3, y - 3);
}
}
g.setColor(TangoColors.CHOCOLATE_1);
for (Visit visit : travelingSalesmanTour.getVisitList()) {
if (visit.getPreviousAppearance() != null) {
City previousCity = visit.getPreviousAppearance().getCity();
int previousX = translator.translateLongitudeToX(previousCity.getLongitude());
int previousY = translator.translateLatitudeToY(previousCity.getLatitude());
City city = visit.getCity();
int x = translator.translateLongitudeToX(city.getLongitude());
int y = translator.translateLatitudeToY(city.getLatitude());
g.drawLine(previousX, previousY, x, y);
// Back to domicile line
boolean needsBackToDomicileLineDraw = true;
for (Visit trailingVisit : travelingSalesmanTour.getVisitList()) {
if (trailingVisit.getPreviousAppearance() == visit) {
needsBackToDomicileLineDraw = false;
break;
}
}
if (needsBackToDomicileLineDraw) {
// TODO support more than 1 domicile
Domicile domicile = travelingSalesmanTour.getDomicileList().get(0);
City domicileCity = domicile.getCity();
int domicileX = translator.translateLongitudeToX(domicileCity.getLongitude());
int domicileY = translator.translateLatitudeToY(domicileCity.getLatitude());
g.drawLine(x, y,domicileX, domicileY);
}
}
}
// Legend
g.setColor(TangoColors.ALUMINIUM_4);
g.fillRect(5, (int) height - 20, 5, 5);
g.drawString("Domicile", 15, (int) height - 15);
g.setColor(TangoColors.PLUM_2);
g.fillRect(6, (int) height - 9, 3, 3);
g.drawString("Visit", 15, (int) height - 5);
repaint();
}
public void updatePanel(TravelingSalesmanTour travelingSalesmanTour) {
resetPanel(travelingSalesmanTour);
}
private Graphics createCanvas(double width, double height) {
int canvasWidth = (int) Math.ceil(width) + 1;
int canvasHeight = (int) Math.ceil(height) + 1;
canvas = new BufferedImage(canvasWidth, canvasHeight, BufferedImage.TYPE_INT_RGB);
Graphics g = canvas.getGraphics();
g.setColor(Color.WHITE);
g.fillRect(0, 0, canvasWidth, canvasHeight);
return g;
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
if (canvas != null) {
g.drawImage(canvas, 0, 0, this);
}
}
}