source: josm/trunk/src/org/openstreetmap/josm/gui/download/BoundingBoxSelection.java@ 1677

Last change on this file since 1677 was 1677, checked in by stoecker, 15 years ago

remove all these ugly tab stops introduced in the last half year
  • Property svn:eol-style set to native
File size: 7.2 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.Dimension;
7import java.awt.GridBagLayout;
8import java.awt.event.FocusAdapter;
9import java.awt.event.FocusEvent;
10import java.awt.event.FocusListener;
11import java.awt.event.KeyEvent;
12import java.awt.event.KeyListener;
13
14import javax.swing.JLabel;
15import javax.swing.JPanel;
16import javax.swing.JTextArea;
17import javax.swing.JTextField;
18import javax.swing.SwingUtilities;
19import javax.swing.event.DocumentListener;
20import javax.swing.event.DocumentEvent;
21
22import org.openstreetmap.josm.data.Bounds;
23import org.openstreetmap.josm.tools.GBC;
24import org.openstreetmap.josm.tools.OsmUrlToBounds;
25
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
44 public void addGui(final DownloadDialog gui) {
45
46 JPanel dlg = new JPanel(new GridBagLayout());
47
48 final FocusListener dialogUpdater = new FocusAdapter() {
49 @Override public void focusLost(FocusEvent e) {
50 SwingUtilities.invokeLater(new Runnable() {
51 public void run() {
52 try {
53 double minlat = Double.parseDouble(latlon[0].getText());
54 double minlon = Double.parseDouble(latlon[1].getText());
55 double maxlat = Double.parseDouble(latlon[2].getText());
56 double maxlon = Double.parseDouble(latlon[3].getText());
57 if (minlat != gui.minlat || minlon != gui.minlon || maxlat != gui.maxlat || maxlon != gui.maxlon) {
58 gui.minlat = minlat; gui.minlon = minlon;
59 gui.maxlat = maxlat; gui.maxlon = maxlon;
60 gui.boundingBoxChanged(BoundingBoxSelection.this);
61 }
62 } catch (NumberFormatException x) {
63 // ignore
64 }
65 updateUrl(gui);
66 }
67 });
68 }
69 };
70
71 for (JTextField f : latlon) {
72 f.setMinimumSize(new Dimension(100,new JTextField().getMinimumSize().height));
73 f.addFocusListener(dialogUpdater);
74 }
75
76 class osmUrlRefresher implements DocumentListener {
77 public void changedUpdate(DocumentEvent e) { parseURL(gui); }
78 public void insertUpdate(DocumentEvent e) { parseURL(gui); }
79 public void removeUpdate(DocumentEvent e) { parseURL(gui); }
80 }
81
82 KeyListener osmUrlKeyListener = new KeyListener() {
83 public void keyPressed(KeyEvent keyEvent) {}
84 public void keyReleased(KeyEvent keyEvent) {
85 if (keyEvent.getKeyCode() == KeyEvent.VK_ENTER && parseURL(gui))
86 gui.closeDownloadDialog(true);
87 }
88 public void keyTyped(KeyEvent keyEvent) {}
89 };
90
91 osmUrl.addKeyListener(osmUrlKeyListener);
92 osmUrl.getDocument().addDocumentListener(new osmUrlRefresher());
93
94 // select content on receiving focus. this seems to be the default in the
95 // windows look+feel but not for others. needs invokeLater to avoid strange
96 // side effects that will cancel out the newly made selection otherwise.
97 osmUrl.addFocusListener(new FocusAdapter() {
98 @Override public void focusGained(FocusEvent e) {
99 SwingUtilities.invokeLater(new Runnable() {
100 public void run() {
101 osmUrl.selectAll();
102 }
103 });
104 }
105 });
106 osmUrl.setLineWrap(true);
107 osmUrl.setBorder(latlon[0].getBorder());
108
109 dlg.add(new JLabel(tr("min lat")), GBC.std().insets(10,20,5,0));
110 dlg.add(latlon[0], GBC.std().insets(0,20,0,0));
111 dlg.add(new JLabel(tr("min lon")), GBC.std().insets(10,20,5,0));
112 dlg.add(latlon[1], GBC.eol().insets(0,20,0,0));
113 dlg.add(new JLabel(tr("max lat")), GBC.std().insets(10,0,5,0));
114 dlg.add(latlon[2], GBC.std());
115 dlg.add(new JLabel(tr("max lon")), GBC.std().insets(10,0,5,0));
116 dlg.add(latlon[3], GBC.eol());
117
118 dlg.add(new JLabel(tr("URL from www.openstreetmap.org (you can paste an URL here to download the area)")), GBC.eol().insets(10,20,5,0));
119 dlg.add(osmUrl, GBC.eop().insets(10,0,5,0).fill());
120 dlg.add(showUrl, GBC.eop().insets(10,0,5,5));
121 showUrl.setEditable(false);
122 showUrl.setBackground(dlg.getBackground());
123 showUrl.addFocusListener(new FocusAdapter(){
124 @Override
125 public void focusGained(FocusEvent e) {
126 showUrl.selectAll();
127 }
128 });
129
130 gui.tabpane.addTab(tr("Bounding Box"), dlg);
131 }
132
133 /**
134 * Called when bounding box is changed by one of the other download dialog tabs.
135 */
136 public void boundingBoxChanged(DownloadDialog gui) {
137 updateBboxFields(gui);
138 updateUrl(gui);
139 }
140
141 private boolean parseURL(DownloadDialog gui) {
142 Bounds b = OsmUrlToBounds.parse(osmUrl.getText());
143 if(b == null) return false;
144 gui.minlon = b.min.lon();
145 gui.minlat = b.min.lat();
146 gui.maxlon = b.max.lon();
147 gui.maxlat = b.max.lat();
148 gui.boundingBoxChanged(BoundingBoxSelection.this);
149 updateBboxFields(gui);
150 updateUrl(gui);
151 return true;
152 }
153
154 private void updateBboxFields(DownloadDialog gui) {
155 latlon[0].setText(Double.toString(gui.minlat));
156 latlon[1].setText(Double.toString(gui.minlon));
157 latlon[2].setText(Double.toString(gui.maxlat));
158 latlon[3].setText(Double.toString(gui.maxlon));
159 for (JTextField f : latlon)
160 f.setCaretPosition(0);
161 }
162
163 private void updateUrl(DownloadDialog gui) {
164 double lat = (gui.minlat + gui.maxlat)/2;
165 double lon = (gui.minlon + gui.maxlon)/2;
166 // convert to mercator (for calculation of zoom only)
167 double latMin = Math.log(Math.tan(Math.PI/4.0+gui.minlat/180.0*Math.PI/2.0))*180.0/Math.PI;
168 double latMax = Math.log(Math.tan(Math.PI/4.0+gui.maxlat/180.0*Math.PI/2.0))*180.0/Math.PI;
169 double size = Math.max(Math.abs(latMax-latMin), Math.abs(gui.maxlon-gui.minlon));
170 int zoom = 0;
171 while (zoom <= 20) {
172 if (size >= 180)
173 break;
174 size *= 2;
175 zoom++;
176 }
177 // Truncate lat and lon to something more sensible
178 int decimals = (int) Math.pow(10, (zoom / 3));
179 lat = Math.round(lat * decimals);
180 lat /= decimals;
181 lon = Math.round(lon * decimals);
182 lon /= decimals;
183 showUrl.setText("http://www.openstreetmap.org/?lat="+lat+"&lon="+lon+"&zoom="+zoom);
184 }
185}
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