Java tutorial
/* * Copyright 2015 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.optaplanner.examples.coachshuttlegathering.swingui; import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.event.ComponentAdapter; import java.awt.event.ComponentEvent; import java.awt.image.BufferedImage; import java.util.List; import javax.swing.JPanel; import org.apache.commons.lang3.StringUtils; import org.optaplanner.examples.coachshuttlegathering.domain.Bus; import org.optaplanner.examples.coachshuttlegathering.domain.BusStop; import org.optaplanner.examples.coachshuttlegathering.domain.Coach; import org.optaplanner.examples.coachshuttlegathering.domain.CoachShuttleGatheringSolution; import org.optaplanner.examples.coachshuttlegathering.domain.StopOrHub; import org.optaplanner.examples.coachshuttlegathering.domain.location.RoadLocation; import org.optaplanner.swing.impl.TangoColorFactory; import org.optaplanner.examples.common.swingui.latitudelongitude.LatitudeLongitudeTranslator; public class CoachShuttleGatheringWorldPanel extends JPanel { private static final int LOCATION_NAME_TEXT_SIZE = 12; private final CoachShuttleGatheringPanel coachShuttleGatheringPanel; private BufferedImage canvas = null; private LatitudeLongitudeTranslator translator = null; public CoachShuttleGatheringWorldPanel(CoachShuttleGatheringPanel coachShuttleGatheringPanel) { this.coachShuttleGatheringPanel = coachShuttleGatheringPanel; addComponentListener(new ComponentAdapter() { @Override public void componentResized(ComponentEvent e) { // TODO Not thread-safe during solving CoachShuttleGatheringSolution solution = CoachShuttleGatheringWorldPanel.this.coachShuttleGatheringPanel .getCoachShuttleGatheringSolution(); if (solution != null) { resetPanel(solution); } } }); } public void resetPanel(CoachShuttleGatheringSolution solution) { translator = new LatitudeLongitudeTranslator(); for (RoadLocation location : solution.getLocationList()) { translator.addCoordinates(location.getLatitude(), location.getLongitude()); } Dimension size = getSize(); double width = size.getWidth(); double height = size.getHeight(); translator.prepareFor(width, height); Graphics2D g = createCanvas(width, height); g.setColor(TangoColorFactory.ORANGE_3); RoadLocation hubLocation = solution.getHub().getLocation(); translator.drawSquare(g, hubLocation.getLongitude(), hubLocation.getLatitude(), 5); for (BusStop stop : solution.getStopList()) { RoadLocation location = stop.getLocation(); g.setColor((stop.getPassengerQuantity() <= 0) ? TangoColorFactory.ALUMINIUM_4 : (stop.getTransportTimeToHub() == null) ? TangoColorFactory.ORANGE_2 : (stop.getTransportTimeRemainder() < 0) ? TangoColorFactory.SCARLET_2 : TangoColorFactory.ORANGE_2); translator.drawSquare(g, location.getLongitude(), location.getLatitude(), 3, stop.getTransportLabel()); } List<Bus> busList = solution.getBusList(); g.setColor(TangoColorFactory.ALUMINIUM_2); g.setFont(g.getFont().deriveFont((float) LOCATION_NAME_TEXT_SIZE)); for (Bus bus : busList) { RoadLocation location = bus.getLocation(); g.setColor(bus instanceof Coach ? TangoColorFactory.ORANGE_1 : TangoColorFactory.ALUMINIUM_2); translator.drawSquare(g, location.getLongitude(), location.getLatitude(), 3, StringUtils.abbreviate(bus.getName(), 20)); } int colorIndex = 0; for (Bus bus : busList) { g.setColor(TangoColorFactory.SEQUENCE_2[colorIndex]); BusStop lastStop = null; for (BusStop stop = bus.getNextStop(); stop != null; stop = stop.getNextStop()) { RoadLocation previousLocation = stop.getPreviousBusOrStop().getLocation(); RoadLocation location = stop.getLocation(); translator.drawRoute(g, previousLocation.getLongitude(), previousLocation.getLatitude(), location.getLongitude(), location.getLatitude(), false, false); lastStop = stop; } if (lastStop != null || bus instanceof Coach) { RoadLocation lastStopLocation = lastStop == null ? bus.getLocation() : lastStop.getLocation(); StopOrHub destination = bus.getDestination(); if (destination != null) { RoadLocation destinationLocation = destination.getLocation(); translator.drawRoute(g, lastStopLocation.getLongitude(), lastStopLocation.getLatitude(), destinationLocation.getLongitude(), destinationLocation.getLatitude(), false, true); } } colorIndex = (colorIndex + 1) % TangoColorFactory.SEQUENCE_2.length; } repaint(); } public void updatePanel(CoachShuttleGatheringSolution solution) { resetPanel(solution); } private Graphics2D 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); Graphics2D g = canvas.createGraphics(); 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); } } }