336 lines
8.8 KiB
Java
336 lines
8.8 KiB
Java
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package com.anvisics;
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import java.awt.BorderLayout;
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import java.awt.Color;
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import java.awt.Container;
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import java.awt.Graphics;
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import java.awt.Point;
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import java.awt.event.ComponentAdapter;
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import java.awt.event.ComponentEvent;
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import java.awt.event.KeyEvent;
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import java.awt.event.MouseAdapter;
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import java.awt.event.MouseEvent;
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import java.awt.image.BufferedImage;
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import java.io.File;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import javax.imageio.ImageIO;
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import javax.swing.JFrame;
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import javax.swing.JPanel;
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import javax.swing.UIManager;
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import com.anvisics.DataExtraction.ExitListener;
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public class MapPanel extends JPanel {
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private static final long serialVersionUID = 1L;
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public interface IMapLocationListener {
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void locationChanged(double newLatitude, double newLongitude);
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}
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public static void main(String[] args) throws IOException {
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JFrame frame = new JFrame("Tree of choose");
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try {
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UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
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} catch (Exception e) {
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e.printStackTrace();
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}
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frame.addWindowListener(new ExitListener());
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Container content = frame.getContentPane();
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// MapPanel panel = new MapPanel(new ZipFile(Constants.pathToTestDataDir + "MinskTiles.zipp"));
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MapPanel panel = new MapPanel(new File(Constants.pathToTestDataDir + "MinskTiles"));
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content.add(panel, BorderLayout.CENTER);
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frame.setSize(512, 512);
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frame.setVisible(true);
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}
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private final int tileSize = 256;
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private BufferedImage[][] images;
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private int xStartingImage = 0;
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private int yStartingImage = 0;
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private final File fileWithTiles;
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private int zoom = 15;
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// degree measurements (-180, 180)
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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private double longitude = 27.56;
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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// degree measurements (90, -90)
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private double latitude = 53.9;
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private List<IMapLocationListener> listeners = new ArrayList<IMapLocationListener>();
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private String map = "Mapnik";
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public MapPanel(File fileWithTiles) {
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this.fileWithTiles = fileWithTiles;
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initUI();
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}
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public double getXTile(){
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return NodeUtil.getTileNumberX(zoom, longitude);
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}
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public double getYTile(){
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return NodeUtil.getTileNumberY(zoom, latitude);
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}
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@Override
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protected void paintComponent(Graphics g) {
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System.out.println("draw");
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if (images != null) {
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for (int i = 0; i < images.length; i++) {
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for (int j = 0; j < images[i].length; j++) {
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if(images[i][j] == null){
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if((i+j + (int)getXTile() + (int)getYTile()) % 2 == 0){
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g.setColor(Color.gray);
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} else {
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g.setColor(Color.white);
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}
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g.fillRect(i * tileSize+xStartingImage, j * tileSize + yStartingImage, tileSize, tileSize);
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} else {
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g.drawImage(images[i][j], i * tileSize+xStartingImage, j * tileSize + yStartingImage, this);
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}
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}
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}
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}
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g.setColor(Color.black);
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g.fillOval(getWidth()/2 - 2, getHeight()/2 -2, 4, 4);
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g.drawOval(getWidth()/2 - 2, getHeight()/2 -2, 4, 4);
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g.drawOval(getWidth()/2 - 5, getHeight()/2 -5, 10, 10);
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}
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public String getFile(int x, int y){
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return map +"/"+zoom+"/"+(x) +"/"+y+".png";
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}
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Map<String, BufferedImage> cache = new HashMap<String, BufferedImage>();
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public BufferedImage getImageFor(int x, int y) throws IOException{
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String file = getFile(x, y);
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if(!cache.containsKey(file)){
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// ZipEntry en = fileWithTiles.getEntry(file);
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File en = new File(fileWithTiles, file);
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if(cache.size() > 1000){
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ArrayList<String> list = new ArrayList<String>(cache.keySet());
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for(int i=0; i<list.size(); i+=2){
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cache.remove(list.get(i));
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}
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}
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// if(en != null){
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if(en.exists()){
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// cache.put(file, ImageIO.read(fileWithTiles.getInputStream(en)));
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long time = System.currentTimeMillis();
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cache.put(file, ImageIO.read(en));
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System.out.println("Loaded " + (System.currentTimeMillis() - time));
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} else {
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cache.put(file, null);
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}
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}
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return cache.get(file);
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}
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// TODO async loading images (show busy cursor while it is loaded)
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public void prepareImage(){
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try {
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if (images != null) {
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for (int i = 0; i < images.length; i++) {
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for (int j = 0; j < images[i].length; j++) {
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// dispose
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}
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}
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}
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double xTile = getXTile();
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double yTile = getYTile();
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double leftX = (getSize().width/2d - (xTile - Math.floor(xTile)) *tileSize)/tileSize;
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double leftY = (getSize().height/2d - (yTile - Math.floor(yTile)) *tileSize)/tileSize;
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int xStartInd = (int) (Math.floor(xTile) - Math.ceil(leftX));
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int yStartInd = (int) (Math.floor(yTile) - Math.ceil(leftY));
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xStartingImage = (int) ((leftX - Math.ceil(leftX))*tileSize);
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yStartingImage = (int) ((leftY - Math.ceil(leftY))*tileSize);
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int tileXCount = (int) Math.ceil((getSize().width - xStartingImage)/ (double)tileSize );
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int tileYCount = (int) Math.ceil((getSize().height- yStartingImage)/ (double)tileSize );
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images = new BufferedImage[tileXCount][tileYCount];
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for(int i=0; i<images.length; i++){
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for(int j=0; j<images[i].length; j++){
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images[i][j]= getImageFor(xStartInd + i, yStartInd + j);
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}
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}
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repaint();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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private void initUI() {
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setFocusable(true);
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addComponentListener(new ComponentAdapter(){
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public void componentResized(ComponentEvent e) {
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prepareImage();
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}
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});
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MapMouseAdapter mouse = new MapMouseAdapter();
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addMouseListener(mouse);
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addMouseMotionListener(mouse);
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}
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public void setZoom(int zoom){
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this.zoom = zoom;
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prepareImage();
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}
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public void setLatLon(double latitude, double longitude){
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this.latitude = latitude;
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this.longitude = longitude;
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prepareImage();
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fireMapLocationListeners();
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}
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public double getLatitude() {
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return latitude;
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}
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public double getLongitude() {
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return longitude;
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}
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public int getZoom() {
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return zoom;
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}
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public String getMap(){
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return map;
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}
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public void setMapName(String map){
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this.map = map;
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prepareImage();
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}
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public void addMapLocationListener(IMapLocationListener l){
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listeners.add(l);
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}
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public void removeMapLocationListener(IMapLocationListener l){
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listeners.remove(l);
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}
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protected void fireMapLocationListeners(){
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for(IMapLocationListener l : listeners){
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l.locationChanged(latitude, longitude);
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}
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}
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@Override
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protected void processKeyEvent(KeyEvent e) {
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boolean processed = false;
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if (e.getID() == KeyEvent.KEY_RELEASED) {
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if (e.getKeyCode() == 37) {
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longitude = NodeUtil.getLongitudeFromTile(zoom, getXTile()-0.5);
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processed = true;
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} else if (e.getKeyCode() == 39) {
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longitude = NodeUtil.getLongitudeFromTile(zoom, getXTile()+0.5);
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processed = true;
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} else if (e.getKeyCode() == 38) {
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latitude = NodeUtil.getLatitudeFromTile(zoom, getYTile()-0.5);
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processed = true;
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} else if (e.getKeyCode() == 40) {
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latitude = NodeUtil.getLatitudeFromTile(zoom, getYTile()+0.5);
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processed = true;
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}
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}
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if(e.getID() == KeyEvent.KEY_TYPED){
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if(e.getKeyChar() == '+'){
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zoom ++;
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processed = true;
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} else if(e.getKeyChar() == '-'){
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zoom --;
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processed = true;
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}
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}
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if(processed){
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e.consume();
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prepareImage();
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fireMapLocationListeners();
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}
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super.processKeyEvent(e);
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}
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public class MapMouseAdapter extends MouseAdapter {
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private Point startDragging = null;
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@Override
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public void mouseClicked(MouseEvent e) {
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if(e.getButton() == MouseEvent.BUTTON1){
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requestFocus();
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}
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}
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public void dragTo(Point p){
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double dx = (startDragging.x - (double)p.x)/tileSize;
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double dy = (startDragging.y - (double)p.y)/tileSize;
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double lat = NodeUtil.getLatitudeFromTile(zoom, getYTile() + dy);
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double lon = NodeUtil.getLongitudeFromTile(zoom, getXTile() + dx);
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setLatLon(lat, lon);
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}
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@Override
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public void mouseDragged(MouseEvent e) {
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if(startDragging != null){
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if(Math.abs(e.getPoint().x - startDragging.x) + Math.abs(e.getPoint().y - startDragging.y) >= 8){
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dragTo(e.getPoint());
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startDragging = e.getPoint();
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}
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}
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}
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@Override
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public void mousePressed(MouseEvent e) {
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if(e.getButton() == MouseEvent.BUTTON3){
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if(startDragging == null){
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startDragging = e.getPoint();
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}
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}
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}
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@Override
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public void mouseReleased(MouseEvent e) {
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if(e.getButton() == MouseEvent.BUTTON3){
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if(startDragging != null){
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dragTo(e.getPoint());
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fireMapLocationListeners();
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startDragging = null;
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}
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}
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super.mouseReleased(e);
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}
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}
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}
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