001 // License: GPL. Copyright 2007 by Immanuel Scholz and others
002 package org.openstreetmap.josm.actions;
003
004 import static org.openstreetmap.josm.tools.I18n.tr;
005
006 import java.awt.BorderLayout;
007 import java.awt.GridBagLayout;
008 import java.awt.event.ActionEvent;
009 import java.awt.event.KeyEvent;
010 import java.awt.event.MouseEvent;
011 import java.awt.event.MouseListener;
012
013 import javax.swing.JLabel;
014 import javax.swing.JOptionPane;
015 import javax.swing.JPanel;
016 import javax.swing.JTextField;
017 import javax.swing.event.DocumentEvent;
018 import javax.swing.event.DocumentListener;
019
020 import org.openstreetmap.josm.Main;
021 import org.openstreetmap.josm.actions.JosmAction;
022 import org.openstreetmap.josm.data.Bounds;
023 import org.openstreetmap.josm.data.coor.LatLon;
024 import org.openstreetmap.josm.gui.MapView;
025 import org.openstreetmap.josm.tools.GBC;
026 import org.openstreetmap.josm.tools.OsmUrlToBounds;
027 import org.openstreetmap.josm.tools.Shortcut;
028
029 public class JumpToAction extends JosmAction implements MouseListener {
030 public JumpToAction() {
031 super(tr("Jump To Position"), null, tr("Opens a dialog that allows to jump to a specific location"), Shortcut.registerShortcut("tools:jumpto", tr("Tool: {0}", tr("Jump To Position")),
032 KeyEvent.VK_J, Shortcut.CTRL), false);
033 putValue("toolbar", "action/jumpto");
034 Main.toolbar.register(this);
035 }
036
037 private JTextField url = new JTextField();
038 private JTextField lat = new JTextField();
039 private JTextField lon = new JTextField();
040 private JTextField zm = new JTextField();
041
042 private double zoomFactor = 0;
043 public void showJumpToDialog() {
044 MapView mv = Main.map.mapView;
045 if(mv == null)
046 return;
047 LatLon curPos=mv.getProjection().eastNorth2latlon(mv.getCenter());
048 lat.setText(java.lang.Double.toString(curPos.lat()));
049 lon.setText(java.lang.Double.toString(curPos.lon()));
050
051 double dist = mv.getDist100Pixel();
052 zoomFactor = 1/dist;
053
054 zm.setText(java.lang.Long.toString(Math.round(dist*100)/100));
055 updateUrl(true);
056
057 JPanel panel = new JPanel(new BorderLayout());
058 panel.add(new JLabel("<html>"
059 + tr("Enter Lat/Lon to jump to position.")
060 + "<br>"
061 + tr("You can also paste an URL from www.openstreetmap.org")
062 + "<br>"
063 + "</html>"),
064 BorderLayout.NORTH);
065
066 class osmURLListener implements DocumentListener {
067 public void changedUpdate(DocumentEvent e) { parseURL(); }
068 public void insertUpdate(DocumentEvent e) { parseURL(); }
069 public void removeUpdate(DocumentEvent e) { parseURL(); }
070 }
071
072 class osmLonLatListener implements DocumentListener {
073 public void changedUpdate(DocumentEvent e) { updateUrl(false); }
074 public void insertUpdate(DocumentEvent e) { updateUrl(false); }
075 public void removeUpdate(DocumentEvent e) { updateUrl(false); }
076 }
077
078 osmLonLatListener x=new osmLonLatListener();
079 lat.getDocument().addDocumentListener(x);
080 lon.getDocument().addDocumentListener(x);
081 zm.getDocument().addDocumentListener(x);
082 url.getDocument().addDocumentListener(new osmURLListener());
083
084 JPanel p = new JPanel(new GridBagLayout());
085 panel.add(p, BorderLayout.NORTH);
086
087 p.add(new JLabel(tr("Latitude")), GBC.eol());
088 p.add(lat, GBC.eol().fill(GBC.HORIZONTAL));
089
090 p.add(new JLabel(tr("Longitude")), GBC.eol());
091 p.add(lon, GBC.eol().fill(GBC.HORIZONTAL));
092
093 p.add(new JLabel(tr("Zoom (in metres)")), GBC.eol());
094 p.add(zm, GBC.eol().fill(GBC.HORIZONTAL));
095
096 p.add(new JLabel(tr("URL")), GBC.eol());
097 p.add(url, GBC.eol().fill(GBC.HORIZONTAL));
098
099 Object[] buttons = { tr("Jump there"), tr("Cancel") };
100 LatLon ll = null;
101 double zoomLvl = 100;
102 while(ll == null) {
103 int option = JOptionPane.showOptionDialog(
104 Main.parent,
105 panel,
106 tr("Jump to Position"),
107 JOptionPane.OK_CANCEL_OPTION,
108 JOptionPane.PLAIN_MESSAGE,
109 null,
110 buttons,
111 buttons[0]);
112
113 if (option != JOptionPane.OK_OPTION) return;
114 try {
115 zoomLvl = Double.parseDouble(zm.getText());
116 ll = new LatLon(Double.parseDouble(lat.getText()), Double.parseDouble(lon.getText()));
117 } catch (Exception ex) {
118 JOptionPane.showMessageDialog(Main.parent, tr("Could not parse Latitude, Longitude or Zoom. Please check."), tr("Unable to parse Lon/Lat"), JOptionPane.ERROR_MESSAGE);
119 }
120 }
121
122 mv.zoomToFactor(mv.getProjection().latlon2eastNorth(ll), zoomFactor * zoomLvl);
123 }
124
125 private void parseURL() {
126 if(!url.hasFocus()) return;
127 Bounds b = OsmUrlToBounds.parse(url.getText());
128 if (b != null) {
129 lat.setText(Double.toString((b.getMin().lat() + b.getMax().lat())/2));
130 lon.setText(Double.toString((b.getMin().lon() + b.getMax().lon())/2));
131
132 int zoomLvl = 16;
133 String[] args = url.getText().substring(url.getText().indexOf('?')+1).split("&");
134 for (String arg : args) {
135 int eq = arg.indexOf('=');
136 if (eq == -1 || !arg.substring(0, eq).equalsIgnoreCase("zoom")) continue;
137
138 zoomLvl = Integer.parseInt(arg.substring(eq + 1));
139 break;
140 }
141
142 // 10 000 000 = 10 000 * 1000 = World * (km -> m)
143 zm.setText(Double.toString(Math.round(10000000 * Math.pow(2, (-1) * zoomLvl))));
144 }
145 }
146
147 private void updateUrl(boolean force) {
148 if(!lat.hasFocus() && !lon.hasFocus() && !zm.hasFocus() && !force) return;
149 try {
150 double dlat = Double.parseDouble(lat.getText());
151 double dlon = Double.parseDouble(lon.getText());
152 double m = Double.parseDouble(zm.getText());
153 // Inverse function to the one above. 18 is the current maximum zoom
154 // available on standard renderers, so choose this is in case m
155 // should be zero
156 int zoomLvl = 18;
157 if(m > 0)
158 zoomLvl = (int)Math.round((-1) * Math.log(m/10000000)/Math.log(2));
159
160 int decimals = (int) Math.pow(10, (zoomLvl / 3));
161 dlat = Math.round(dlat * decimals);
162 dlat /= decimals;
163 dlon = Math.round(dlon * decimals);
164 dlon /= decimals;
165 url.setText("http://www.openstreetmap.org/?lat="+dlat+"&lon="+dlon+"&zoom="+zoomLvl);
166 } catch (NumberFormatException x) {}
167 }
168
169 public void actionPerformed(ActionEvent e) {
170 showJumpToDialog();
171 }
172
173 public void mousePressed(MouseEvent e) {}
174
175 public void mouseReleased(MouseEvent e) {}
176
177 public void mouseEntered(MouseEvent e) {}
178
179 public void mouseExited(MouseEvent e) {}
180
181 public void mouseClicked(MouseEvent e) {
182 showJumpToDialog();
183 }
184 }