source: josm/trunk/src/org/openstreetmap/josm/gui/download/BoundingBoxSelection.java@ 1169

Last change on this file since 1169 was 1169, checked in by stoecker, 15 years ago

removed usage of tab stops
  • Property svn:eol-style set to native
File size: 8.1 KB
Line 
1// License: GPL. Copyright 2007 by Immanuel Scholz and others
2package org.openstreetmap.josm.gui.download;
3
4import static org.openstreetmap.josm.tools.I18n.tr;
5
6import java.awt.Color;
7import java.awt.Dimension;
8import java.awt.GridBagLayout;
9import java.awt.event.FocusAdapter;
10import java.awt.event.FocusEvent;
11import java.awt.event.FocusListener;
12import java.awt.event.MouseAdapter;
13import java.util.HashMap;
14
15import javax.swing.JLabel;
16import javax.swing.JPanel;
17import javax.swing.JTextArea;
18import javax.swing.JTextField;
19import javax.swing.SwingUtilities;
20import javax.swing.event.DocumentListener;
21import javax.swing.event.DocumentEvent;
22
23import org.openstreetmap.josm.data.Bounds;
24import org.openstreetmap.josm.data.coor.LatLon;
25import org.openstreetmap.josm.tools.GBC;
26/**
27 * Bounding box selector.
28 *
29 * Provides max/min lat/lon input fields as well as the "URL from www.openstreetmap.org" text field.
30 *
31 * @author Frederik Ramm <frederik@remote.org>
32 *
33 */
34public class BoundingBoxSelection implements DownloadSelection {
35
36 private JTextField[] latlon = new JTextField[] {
37 new JTextField(11),
38 new JTextField(11),
39 new JTextField(11),
40 new JTextField(11) };
41 final JTextArea osmUrl = new JTextArea();
42 final JTextArea showUrl = new JTextArea();
43 String noteUrl = tr("You can paste an URL here to download the area.");
44
45 public void addGui(final DownloadDialog gui) {
46
47 JPanel dlg = new JPanel(new GridBagLayout());
48 osmUrl.setText(noteUrl);
49
50 final FocusListener dialogUpdater = new FocusAdapter() {
51 @Override public void focusLost(FocusEvent e) {
52 SwingUtilities.invokeLater(new Runnable() {
53 public void run() {
54 try {
55 double minlat = Double.parseDouble(latlon[0].getText());
56 double minlon = Double.parseDouble(latlon[1].getText());
57 double maxlat = Double.parseDouble(latlon[2].getText());
58 double maxlon = Double.parseDouble(latlon[3].getText());
59 if (minlat != gui.minlat || minlon != gui.minlon || maxlat != gui.maxlat || maxlon != gui.maxlon) {
60 gui.minlat = minlat; gui.minlon = minlon;
61 gui.maxlat = maxlat; gui.maxlon = maxlon;
62 gui.boundingBoxChanged(BoundingBoxSelection.this);
63 }
64 } catch (NumberFormatException x) {
65 // ignore
66 }
67 updateUrl(gui);
68 }
69 });
70 }
71 };
72
73 for (JTextField f : latlon) {
74 f.setMinimumSize(new Dimension(100,new JTextField().getMinimumSize().height));
75 f.addFocusListener(dialogUpdater);
76 }
77 class osmUrlRefresher implements DocumentListener {
78 public void changedUpdate(DocumentEvent e) { dowork(); }
79 public void insertUpdate(DocumentEvent e) { dowork(); }
80 public void removeUpdate(DocumentEvent e) { dowork(); }
81 private void dowork() {
82 Bounds b = osmurl2bounds(osmUrl.getText());
83 if (b != null) {
84 gui.minlon = b.min.lon();
85 gui.minlat = b.min.lat();
86 gui.maxlon = b.max.lon();
87 gui.maxlat = b.max.lat();
88 gui.boundingBoxChanged(BoundingBoxSelection.this);
89 updateBboxFields(gui);
90 updateUrl(gui);
91 }
92 }
93 }
94
95 osmUrl.getDocument().addDocumentListener(new osmUrlRefresher());
96
97 // select content on receiving focus. this seems to be the default in the
98 // windows look+feel but not for others. needs invokeLater to avoid strange
99 // side effects that will cancel out the newly made selection otherwise.
100 osmUrl.addFocusListener(new FocusAdapter() {
101 @Override public void focusGained(FocusEvent e) {
102 SwingUtilities.invokeLater(new Runnable() {
103 public void run() {
104 osmUrl.selectAll();
105 }
106 });
107 }
108 });
109 osmUrl.setLineWrap(true);
110 osmUrl.setBorder(latlon[0].getBorder());
111
112 dlg.add(new JLabel(tr("min lat")), GBC.std().insets(10,20,5,0));
113 dlg.add(latlon[0], GBC.std().insets(0,20,0,0));
114 dlg.add(new JLabel(tr("min lon")), GBC.std().insets(10,20,5,0));
115 dlg.add(latlon[1], GBC.eol().insets(0,20,0,0));
116 dlg.add(new JLabel(tr("max lat")), GBC.std().insets(10,0,5,0));
117 dlg.add(latlon[2], GBC.std());
118 dlg.add(new JLabel(tr("max lon")), GBC.std().insets(10,0,5,0));
119 dlg.add(latlon[3], GBC.eol());
120
121 dlg.add(new JLabel(tr("URL from www.openstreetmap.org")), GBC.eol().insets(10,20,5,0));
122 dlg.add(osmUrl, GBC.eop().insets(10,0,5,0).fill());
123 dlg.add(showUrl, GBC.eop().insets(10,0,5,5));
124 showUrl.setEditable(false);
125 showUrl.setBackground(dlg.getBackground());
126 showUrl.addFocusListener(new FocusAdapter(){
127 @Override
128 public void focusGained(FocusEvent e) {
129 showUrl.selectAll();
130 }
131 });
132
133 gui.tabpane.addTab(tr("Bounding Box"), dlg);
134 }
135
136 /**
137 * Called when bounding box is changed by one of the other download dialog tabs.
138 */
139 public void boundingBoxChanged(DownloadDialog gui) {
140 updateBboxFields(gui);
141 updateUrl(gui);
142 }
143
144 private void updateBboxFields(DownloadDialog gui) {
145 latlon[0].setText(Double.toString(gui.minlat));
146 latlon[1].setText(Double.toString(gui.minlon));
147 latlon[2].setText(Double.toString(gui.maxlat));
148 latlon[3].setText(Double.toString(gui.maxlon));
149 for (JTextField f : latlon)
150 f.setCaretPosition(0);
151 }
152
153 private void updateUrl(DownloadDialog gui) {
154 double lat = (gui.minlat + gui.maxlat)/2;
155 double lon = (gui.minlon + gui.maxlon)/2;
156 // convert to mercator (for calculation of zoom only)
157 double latMin = Math.log(Math.tan(Math.PI/4.0+gui.minlat/180.0*Math.PI/2.0))*180.0/Math.PI;
158 double latMax = Math.log(Math.tan(Math.PI/4.0+gui.maxlat/180.0*Math.PI/2.0))*180.0/Math.PI;
159 double size = Math.max(Math.abs(latMax-latMin), Math.abs(gui.maxlon-gui.minlon));
160 int zoom = 0;
161 while (zoom <= 20) {
162 if (size >= 180)
163 break;
164 size *= 2;
165 zoom++;
166 }
167 showUrl.setText("http://www.openstreetmap.org/index.html?mlat="+lat+"&mlon="+lon+"&zoom="+zoom);
168 }
169
170 public static Bounds osmurl2bounds(String url) {
171 int i = url.indexOf('?');
172 if (i == -1)
173 return null;
174 String[] args = url.substring(i+1).split("&");
175 HashMap<String, String> map = new HashMap<String, String>();
176 for (String arg : args) {
177 int eq = arg.indexOf('=');
178 if (eq != -1) {
179 map.put(arg.substring(0, eq), arg.substring(eq + 1));
180 }
181 }
182
183 Bounds b = null;
184 try {
185 if (map.containsKey("bbox")) {
186 String bbox[] = map.get("bbox").split(",");
187 b = new Bounds(
188 new LatLon(Double.parseDouble(bbox[1]), Double.parseDouble(bbox[0])),
189 new LatLon(Double.parseDouble(bbox[3]), Double.parseDouble(bbox[2])));
190
191 } else {
192 double size = 180.0 / Math.pow(2, Integer.parseInt(map.get("zoom")));
193 b = new Bounds(
194 new LatLon(parseDouble(map, "lat") - size/2, parseDouble(map, "lon") - size),
195 new LatLon(parseDouble(map, "lat") + size/2, parseDouble(map, "lon") + size));
196 }
197 } catch (NumberFormatException x) {
198 } catch (NullPointerException x) {
199 }
200 return b;
201 }
202
203 private static double parseDouble(HashMap<String, String> map, String key) {
204 if (map.containsKey(key))
205 return Double.parseDouble(map.get(key));
206 return Double.parseDouble(map.get("m"+key));
207 }
208}
Note: See TracBrowser for help on using the repository browser.