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 }