source: josm/src/org/openstreetmap/josm/gui/download/BoundingBoxSelection.java@ 292

Last change on this file since 292 was 292, checked in by imi, 17 years ago
  • fixed Bug Report module to work better with plugins
  • fixed Plugin.getPreferenceDir and Plugin.copy
  • fixed Ctrl-Q not asking for changed data
  • fixed several typos in Shortcuts
  • removed check for latest josm version
File size: 6.8 KB
Line 
1package org.openstreetmap.josm.gui.download;
2
3import static org.openstreetmap.josm.tools.I18n.tr;
4
5import java.awt.Color;
6import java.awt.Dimension;
7import java.awt.Font;
8import java.awt.GridBagLayout;
9import java.awt.event.FocusAdapter;
10import java.awt.event.FocusEvent;
11import java.awt.event.FocusListener;
12import java.awt.event.KeyAdapter;
13import java.awt.event.KeyEvent;
14import java.awt.event.KeyListener;
15import java.util.HashMap;
16
17import javax.swing.JLabel;
18import javax.swing.JPanel;
19import javax.swing.JTextArea;
20import javax.swing.JTextField;
21import javax.swing.SwingUtilities;
22
23import org.openstreetmap.josm.Main;
24import org.openstreetmap.josm.data.Bounds;
25import org.openstreetmap.josm.data.coor.LatLon;
26import org.openstreetmap.josm.tools.GBC;
27/**
28 * Bounding box selector.
29 *
30 * Provides max/min lat/lon input fields as well as the "URL from www.openstreetmap.org" text field.
31 *
32 * @author Frederik Ramm <frederik@remote.org>
33 *
34 */
35public class BoundingBoxSelection implements DownloadSelection {
36
37 private JTextField[] latlon = new JTextField[] {
38 new JTextField(11),
39 new JTextField(11),
40 new JTextField(11),
41 new JTextField(11) };
42 final JTextArea osmUrl = new JTextArea();
43
44 final JLabel sizeCheck = new JLabel();
45
46 public void addGui(final DownloadDialog gui) {
47
48 JPanel dlg = new JPanel(new GridBagLayout());
49 osmUrl.setText(tr("You can paste an URL here to download the area."));
50
51 final FocusListener dialogUpdater = new FocusAdapter() {
52 @Override public void focusLost(FocusEvent e) {
53 SwingUtilities.invokeLater(new Runnable() {
54 public void run() {
55 try {
56 double minlat = Double.parseDouble(latlon[0].getText());
57 double minlon = Double.parseDouble(latlon[1].getText());
58 double maxlat = Double.parseDouble(latlon[2].getText());
59 double maxlon = Double.parseDouble(latlon[3].getText());
60 if (minlat != gui.minlat || minlon != gui.minlon || maxlat != gui.maxlat || maxlon != gui.maxlon) {
61 gui.minlat = minlat; gui.minlon = minlon;
62 gui.maxlat = maxlat; gui.maxlon = maxlon;
63 gui.boundingBoxChanged(BoundingBoxSelection.this);
64 }
65 } catch (NumberFormatException x) {
66 // ignore
67 }
68 updateUrl(gui);
69 updateSizeCheck(gui);
70 }
71 });
72 }
73 };
74
75 for (JTextField f : latlon) {
76 f.setMinimumSize(new Dimension(100,new JTextField().getMinimumSize().height));
77 f.addFocusListener(dialogUpdater);
78 }
79
80 final KeyListener osmUrlRefresher = new KeyAdapter() {
81 @Override public void keyTyped(KeyEvent e) {
82 SwingUtilities.invokeLater(new Runnable() {
83 public void run() {
84 Bounds b = osmurl2bounds(osmUrl.getText());
85 if (b != null) {
86 gui.minlon = b.min.lon();
87 gui.minlat = b.min.lat();
88 gui.maxlon = b.max.lon();
89 gui.maxlat = b.max.lat();
90 gui.boundingBoxChanged(BoundingBoxSelection.this);
91 updateBboxFields(gui);
92 updateSizeCheck(gui);
93 }
94 }
95 });
96 }
97 };
98
99 osmUrl.addKeyListener(osmUrlRefresher);
100 osmUrl.setLineWrap(true);
101 osmUrl.setBorder(latlon[0].getBorder());
102
103 Font labelFont = sizeCheck.getFont();
104 sizeCheck.setFont(labelFont.deriveFont(Font.PLAIN, labelFont.getSize()));
105
106 dlg.add(new JLabel(tr("min lat")), GBC.std().insets(10,20,5,0));
107 dlg.add(latlon[0], GBC.std().insets(0,20,0,0));
108 dlg.add(new JLabel(tr("min lon")), GBC.std().insets(10,20,5,0));
109 dlg.add(latlon[1], GBC.eol().insets(0,20,0,0));
110 dlg.add(new JLabel(tr("max lat")), GBC.std().insets(10,0,5,0));
111 dlg.add(latlon[2], GBC.std());
112 dlg.add(new JLabel(tr("max lon")), GBC.std().insets(10,0,5,0));
113 dlg.add(latlon[3], GBC.eol());
114
115 dlg.add(new JLabel(tr("URL from www.openstreetmap.org")), GBC.eol().insets(10,20,5,0));
116 dlg.add(osmUrl, GBC.eop().insets(10,0,5,0).fill());
117 dlg.add(sizeCheck, GBC.eop().insets(10,0,5,20));
118
119 gui.tabpane.addTab("Bounding Box", dlg);
120 }
121
122 /**
123 * Called when bounding box is changed by one of the other download dialog tabs.
124 */
125 public void boundingBoxChanged(DownloadDialog gui) {
126 updateBboxFields(gui);
127 updateUrl(gui);
128 updateSizeCheck(gui);
129 }
130
131 private void updateBboxFields(DownloadDialog gui) {
132 latlon[0].setText(Double.toString(gui.minlat));
133 latlon[1].setText(Double.toString(gui.minlon));
134 latlon[2].setText(Double.toString(gui.maxlat));
135 latlon[3].setText(Double.toString(gui.maxlon));
136 for (JTextField f : latlon)
137 f.setCaretPosition(0);
138 }
139
140 private void updateUrl(DownloadDialog gui) {
141 double lat = (gui.minlat + gui.maxlat)/2;
142 double lon = (gui.minlon + gui.maxlon)/2;
143 // convert to mercator (for calculation of zoom only)
144 double latMin = Math.log(Math.tan(Math.PI/4.0+gui.minlat/180.0*Math.PI/2.0))*180.0/Math.PI;
145 double latMax = Math.log(Math.tan(Math.PI/4.0+gui.maxlat/180.0*Math.PI/2.0))*180.0/Math.PI;
146 double size = Math.max(Math.abs(latMax-latMin), Math.abs(gui.maxlon-gui.minlon));
147 int zoom = 0;
148 while (zoom <= 20) {
149 if (size >= 180)
150 break;
151 size *= 2;
152 zoom++;
153 }
154 osmUrl.setText("http://www.openstreetmap.org/index.html?mlat="+lat+"&mlon="+lon+"&zoom="+zoom);
155 }
156
157 private void updateSizeCheck(DownloadDialog gui) {
158 double squareDegrees = (gui.maxlon-gui.minlon)*(gui.maxlat-gui.minlat);
159 double maxBboxSize = 0.25;
160 try {
161 Double.parseDouble(Main.pref.get("osm-server.max-request-area", "0.25"));
162 } catch (NumberFormatException nfe) {
163 maxBboxSize = 0.25;
164 }
165 if (squareDegrees > maxBboxSize) {
166 sizeCheck.setText(tr("Download area too large; will probably be rejected by server"));
167 sizeCheck.setForeground(Color.red);
168 } else {
169 sizeCheck.setText(tr("Download area ok, size probably acceptable to server"));
170 sizeCheck.setForeground(Color.darkGray);
171 }
172 }
173
174 public static Bounds osmurl2bounds(String url) {
175 int i = url.indexOf('?');
176 if (i == -1)
177 return null;
178 String[] args = url.substring(i+1).split("&");
179 HashMap<String, String> map = new HashMap<String, String>();
180 for (String arg : args) {
181 int eq = arg.indexOf('=');
182 if (eq != -1) {
183 map.put(arg.substring(0, eq), arg.substring(eq + 1));
184 }
185 }
186
187 Bounds b = null;
188 try {
189 if (map.containsKey("bbox")) {
190 String bbox[] = map.get("bbox").split(",");
191 b = new Bounds(
192 new LatLon(Double.parseDouble(bbox[1]), Double.parseDouble(bbox[0])),
193 new LatLon(Double.parseDouble(bbox[3]), Double.parseDouble(bbox[2])));
194
195 } else {
196 double size = 180.0 / Math.pow(2, Integer.parseInt(map.get("zoom")));
197 b = new Bounds(
198 new LatLon(parseDouble(map, "lat") - size/2, parseDouble(map, "lon") - size),
199 new LatLon(parseDouble(map, "lat") + size/2, parseDouble(map, "lon") + size));
200 }
201 } catch (NumberFormatException x) {
202 } catch (NullPointerException x) {
203 }
204 return b;
205 }
206
207 private static double parseDouble(HashMap<String, String> map, String key) {
208 if (map.containsKey(key))
209 return Double.parseDouble(map.get(key));
210 return Double.parseDouble(map.get("m"+key));
211 }
212}
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