source: josm/trunk/src/org/openstreetmap/josm/gui/bbox/TileSelectionBBoxChooser.java@ 4436

Last change on this file since 4436 was 4310, checked in by stoecker, 13 years ago

fix #6680, fix #6677 - i18n issues
  • Property svn:eol-style set to native
File size: 24.9 KB
Line 
1// License: GPL. For details, see LICENSE file.
2package org.openstreetmap.josm.gui.bbox;
3
4import static org.openstreetmap.josm.tools.I18n.tr;
5
6import java.awt.AWTKeyStroke;
7import java.awt.BorderLayout;
8import java.awt.Color;
9import java.awt.FlowLayout;
10import java.awt.Graphics;
11import java.awt.GridBagConstraints;
12import java.awt.GridBagLayout;
13import java.awt.Insets;
14import java.awt.KeyboardFocusManager;
15import java.awt.Point;
16import java.awt.event.ActionEvent;
17import java.awt.event.ActionListener;
18import java.awt.event.FocusEvent;
19import java.awt.event.FocusListener;
20import java.awt.event.KeyEvent;
21import java.beans.PropertyChangeEvent;
22import java.beans.PropertyChangeListener;
23import java.util.HashSet;
24import java.util.Set;
25import java.util.Vector;
26import java.util.regex.Matcher;
27import java.util.regex.Pattern;
28
29import javax.swing.AbstractAction;
30import javax.swing.BorderFactory;
31import javax.swing.JButton;
32import javax.swing.JLabel;
33import javax.swing.JPanel;
34import javax.swing.JSpinner;
35import javax.swing.JTextField;
36import javax.swing.KeyStroke;
37import javax.swing.SpinnerNumberModel;
38import javax.swing.event.ChangeEvent;
39import javax.swing.event.ChangeListener;
40import javax.swing.text.JTextComponent;
41
42import org.openstreetmap.gui.jmapviewer.JMapViewer;
43import org.openstreetmap.gui.jmapviewer.MapMarkerDot;
44import org.openstreetmap.gui.jmapviewer.OsmMercator;
45import org.openstreetmap.gui.jmapviewer.interfaces.MapMarker;
46import org.openstreetmap.josm.data.Bounds;
47import org.openstreetmap.josm.data.coor.LatLon;
48import org.openstreetmap.josm.gui.widgets.AbstractTextComponentValidator;
49import org.openstreetmap.josm.gui.widgets.HtmlPanel;
50import org.openstreetmap.josm.gui.widgets.SelectAllOnFocusGainedDecorator;
51import org.openstreetmap.josm.tools.ImageProvider;
52
53/**
54 * TileSelectionBBoxChooser allows to select a bounding box (i.e. for downloading) based
55 * on OSM tile numbers.
56 *
57 * TileSelectionBBoxChooser can be embedded as component in a Swing container. Example:
58 * <pre>
59 * JFrame f = new JFrame(....);
60 * f.getContentPane().setLayout(new BorderLayout()));
61 * TileSelectionBBoxChooser chooser = new TileSelectionBBoxChooser();
62 * f.add(chooser, BorderLayout.CENTER);
63 * chooser.addPropertyChangeListener(new PropertyChangeListener() {
64 * public void propertyChange(PropertyChangeEvent evt) {
65 * // listen for BBOX events
66 * if (evt.getPropertyName().equals(BBoxChooser.BBOX_PROP)) {
67 * System.out.println("new bbox based on OSM tiles selected: " + (Bounds)evt.getNewValue());
68 * }
69 * }
70 * });
71 *
72 * // init the chooser with a bounding box
73 * chooser.setBoundingBox(....);
74 *
75 * f.setVisible(true);
76 * </pre>
77 */
78public class TileSelectionBBoxChooser extends JPanel implements BBoxChooser{
79
80 /** the current bounding box */
81 private Bounds bbox;
82 /** the map viewer showing the selected bounding box */
83 private TileBoundsMapView mapViewer;
84 /** a panel for entering a bounding box given by a tile grid and a zoom level */
85 private TileGridInputPanel pnlTileGrid;
86 /** a panel for entering a bounding box given by the address of an individual OSM tile at
87 * a given zoom level
88 */
89 private TileAddressInputPanel pnlTileAddress;
90
91 /**
92 * builds the UI
93 */
94 protected void build() {
95 setLayout(new GridBagLayout());
96
97 GridBagConstraints gc = new GridBagConstraints();
98 gc.weightx = 0.5;
99 gc.fill = GridBagConstraints.HORIZONTAL;
100 gc.anchor = GridBagConstraints.NORTHWEST;
101 add(pnlTileGrid = new TileGridInputPanel(), gc);
102
103 gc.gridx = 1;
104 add(pnlTileAddress = new TileAddressInputPanel(), gc);
105
106 gc.gridx = 0;
107 gc.gridy = 1;
108 gc.gridwidth = 2;
109 gc.weightx = 1.0;
110 gc.weighty = 1.0;
111 gc.fill = GridBagConstraints.BOTH;
112 gc.insets = new Insets(2,2,2,2);
113 add(mapViewer = new TileBoundsMapView(), gc);
114 mapViewer.setFocusable(false);
115 mapViewer.setZoomContolsVisible(false);
116 mapViewer.setMapMarkerVisible(false);
117
118 pnlTileAddress.addPropertyChangeListener(pnlTileGrid);
119 pnlTileGrid.addPropertyChangeListener(new TileBoundsChangeListener());
120 }
121
122 public TileSelectionBBoxChooser() {
123 build();
124 }
125
126 /**
127 * Replies the current bounding box. null, if no valid bounding box is currently selected.
128 *
129 */
130 public Bounds getBoundingBox() {
131 return bbox;
132 }
133
134 /**
135 * Sets the current bounding box.
136 *
137 * @param bbox the bounding box. null, if this widget isn't initialized with a bounding box
138 */
139 public void setBoundingBox(Bounds bbox) {
140 pnlTileGrid.initFromBoundingBox(bbox);
141 }
142
143 protected void refreshMapView() {
144 if (bbox == null) return;
145
146 // calc the screen coordinates for the new selection rectangle
147 MapMarkerDot xmin_ymin = new MapMarkerDot(bbox.getMin().lat(), bbox.getMin().lon());
148 MapMarkerDot xmax_ymax = new MapMarkerDot(bbox.getMax().lat(), bbox.getMax().lon());
149
150 Vector<MapMarker> marker = new Vector<MapMarker>(2);
151 marker.add(xmin_ymin);
152 marker.add(xmax_ymax);
153 mapViewer.setBoundingBox(bbox);
154 mapViewer.setMapMarkerList(marker);
155 mapViewer.setDisplayToFitMapMarkers();
156 mapViewer.zoomOut();
157 }
158
159 /**
160 * Computes the bounding box given a tile grid.
161 *
162 * @param tb the description of the tile grid
163 * @return the bounding box
164 */
165 protected Bounds convertTileBoundsToBoundingBox(TileBounds tb) {
166 LatLon min = getNorthWestLatLonOfTile(tb.min, tb.zoomLevel);
167 Point p = new Point(tb.max);
168 p.x++;
169 p.y++;
170 LatLon max = getNorthWestLatLonOfTile(p, tb.zoomLevel);
171 return new Bounds(max.lat(), min.lon(), min.lat(), max.lon());
172 }
173
174 /**
175 * Replies lat/lon of the north/west-corner of a tile at a specific zoom level
176 *
177 * @param tile the tile address (x,y)
178 * @param zoom the zoom level
179 * @return lat/lon of the north/west-corner of a tile at a specific zoom level
180 */
181 protected LatLon getNorthWestLatLonOfTile(Point tile, int zoom) {
182 double lon = tile.x / Math.pow(2.0, zoom) * 360.0 - 180;
183 double lat = Math.toDegrees(Math.atan(Math.sinh(Math.PI - (2.0 * Math.PI * tile.y) / Math.pow(2.0, zoom))));
184 return new LatLon(lat, lon);
185 }
186
187 /**
188 * Listens to changes in the selected tile bounds, refreshes the map view and emits
189 * property change events for {@see BBoxChooser#BBOX_PROP}
190 */
191 class TileBoundsChangeListener implements PropertyChangeListener {
192 public void propertyChange(PropertyChangeEvent evt) {
193 if (!evt.getPropertyName().equals(TileGridInputPanel.TILE_BOUNDS_PROP)) return;
194 TileBounds tb = (TileBounds)evt.getNewValue();
195 Bounds oldValue = TileSelectionBBoxChooser.this.bbox;
196 TileSelectionBBoxChooser.this.bbox = convertTileBoundsToBoundingBox(tb);
197 firePropertyChange(BBOX_PROP, oldValue, TileSelectionBBoxChooser.this.bbox);
198 refreshMapView();
199 }
200 }
201
202 /**
203 * A panel for describing a rectangular area of OSM tiles at a given zoom level.
204 *
205 * The panel emits PropertyChangeEvents for the property {@see TileGridInputPanel#TILE_BOUNDS_PROP}
206 * when the user successfully enters a valid tile grid specification.
207 *
208 */
209 static private class TileGridInputPanel extends JPanel implements PropertyChangeListener{
210 static public final String TILE_BOUNDS_PROP = TileGridInputPanel.class.getName() + ".tileBounds";
211
212 private JTextField tfMaxY;
213 private JTextField tfMinY;
214 private JTextField tfMaxX;
215 private JTextField tfMinX;
216 private TileCoordinateValidator valMaxY;
217 private TileCoordinateValidator valMinY;
218 private TileCoordinateValidator valMaxX;
219 private TileCoordinateValidator valMinX;
220 private JSpinner spZoomLevel;
221 private TileBoundsBuilder tileBoundsBuilder = new TileBoundsBuilder();
222 private boolean doFireTileBoundChanged = true;
223
224 protected JPanel buildTextPanel() {
225 JPanel pnl = new JPanel(new BorderLayout());
226 HtmlPanel msg = new HtmlPanel();
227 msg.setText(tr("<html>Please select a <strong>range of OSM tiles</strong> at a given zoom level.</html>"));
228 pnl.add(msg);
229 return pnl;
230 }
231
232 protected JPanel buildZoomLevelPanel() {
233 JPanel pnl = new JPanel(new FlowLayout(FlowLayout.LEFT));
234 pnl.add(new JLabel(tr("Zoom level:")));
235 pnl.add(spZoomLevel = new JSpinner(new SpinnerNumberModel(0,0,18,1)));
236 spZoomLevel.addChangeListener(new ZomeLevelChangeHandler());
237 spZoomLevel.addChangeListener(tileBoundsBuilder);
238 return pnl;
239 }
240
241 protected JPanel buildTileGridInputPanel() {
242 JPanel pnl = new JPanel(new GridBagLayout());
243 pnl.setBorder(BorderFactory.createEmptyBorder(2,2,2,2));
244 GridBagConstraints gc = new GridBagConstraints();
245 gc.anchor = GridBagConstraints.NORTHWEST;
246 gc.insets = new Insets(0, 0, 2, 2);
247
248 gc.gridwidth = 2;
249 gc.gridx = 1;
250 gc.fill = GridBagConstraints.HORIZONTAL;
251 pnl.add(buildZoomLevelPanel(), gc);
252
253 gc.gridwidth = 1;
254 gc.gridy = 1;
255 gc.gridx = 1;
256 pnl.add(new JLabel(tr("from tile")), gc);
257
258 gc.gridx = 2;
259 pnl.add(new JLabel(tr("up to tile")), gc);
260
261 gc.gridx = 0;
262 gc.gridy = 2;
263 gc.weightx = 0.0;
264 pnl.add(new JLabel("X:"), gc);
265
266
267 gc.gridx = 1;
268 gc.weightx = 0.5;
269 pnl.add(tfMinX = new JTextField(), gc);
270 valMinX = new TileCoordinateValidator(tfMinX);
271 SelectAllOnFocusGainedDecorator.decorate(tfMinX);
272 tfMinX.addActionListener(tileBoundsBuilder);
273 tfMinX.addFocusListener(tileBoundsBuilder);
274
275 gc.gridx = 2;
276 gc.weightx = 0.5;
277 pnl.add(tfMaxX = new JTextField(), gc);
278 valMaxX = new TileCoordinateValidator(tfMaxX);
279 SelectAllOnFocusGainedDecorator.decorate(tfMaxX);
280 tfMaxX.addActionListener(tileBoundsBuilder);
281 tfMaxX.addFocusListener(tileBoundsBuilder);
282
283 gc.gridx = 0;
284 gc.gridy = 3;
285 gc.weightx = 0.0;
286 pnl.add(new JLabel("Y:"), gc);
287
288 gc.gridx = 1;
289 gc.weightx = 0.5;
290 pnl.add(tfMinY = new JTextField(), gc);
291 valMinY = new TileCoordinateValidator(tfMinY);
292 SelectAllOnFocusGainedDecorator.decorate(tfMinY);
293 tfMinY.addActionListener(tileBoundsBuilder);
294 tfMinY.addFocusListener(tileBoundsBuilder);
295
296 gc.gridx = 2;
297 gc.weightx = 0.5;
298 pnl.add(tfMaxY = new JTextField(), gc);
299 valMaxY = new TileCoordinateValidator(tfMaxY);
300 SelectAllOnFocusGainedDecorator.decorate(tfMaxY);
301 tfMaxY.addActionListener(tileBoundsBuilder);
302 tfMaxY.addFocusListener(tileBoundsBuilder);
303
304 gc.gridy = 4;
305 gc.gridx = 0;
306 gc.gridwidth = 3;
307 gc.weightx = 1.0;
308 gc.weighty = 1.0;
309 gc.fill = GridBagConstraints.BOTH;
310 pnl.add(new JPanel(), gc);
311 return pnl;
312 }
313
314 protected void build() {
315 setLayout(new BorderLayout());
316 setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
317 add(buildTextPanel(), BorderLayout.NORTH);
318 add(buildTileGridInputPanel(), BorderLayout.CENTER);
319
320 Set<AWTKeyStroke> forwardKeys = new HashSet<AWTKeyStroke>(getFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS));
321 forwardKeys.add(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0));
322 setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,forwardKeys);
323 }
324
325 public TileGridInputPanel() {
326 build();
327 }
328
329 public void initFromBoundingBox(Bounds bbox) {
330 if (bbox == null)
331 return;
332 TileBounds tb = new TileBounds();
333 tb.zoomLevel = (Integer) spZoomLevel.getValue();
334 tb.min = new Point(
335 Math.max(0,lonToTileX(tb.zoomLevel, bbox.getMin().lon())),
336 Math.max(0,latToTileY(tb.zoomLevel, bbox.getMax().lat()-.00001))
337 );
338 tb.max = new Point(
339 Math.max(0,lonToTileX(tb.zoomLevel, bbox.getMax().lon())),
340 Math.max(0,latToTileY(tb.zoomLevel, bbox.getMin().lat()-.00001))
341 );
342 doFireTileBoundChanged = false;
343 setTileBounds(tb);
344 doFireTileBoundChanged = true;
345 }
346
347 public static int latToTileY(int zoom, double lat) {
348 if ((zoom < 3) || (zoom > 18)) return -1;
349 double l = lat / 180 * Math.PI;
350 double pf = Math.log(Math.tan(l) + (1/Math.cos(l)));
351 return (int) ((1<<(zoom-1)) * (Math.PI - pf) / Math.PI);
352 }
353
354 public static int lonToTileX(int zoom, double lon) {
355 if ((zoom < 3) || (zoom > 18)) return -1;
356 return (int) ((1<<(zoom-3)) * (lon + 180.0) / 45.0);
357 }
358
359 public void setTileBounds(TileBounds tileBounds) {
360 tfMinX.setText(Integer.toString(tileBounds.min.x));
361 tfMinY.setText(Integer.toString(tileBounds.min.y));
362 tfMaxX.setText(Integer.toString(tileBounds.max.x));
363 tfMaxY.setText(Integer.toString(tileBounds.max.y));
364 spZoomLevel.setValue(tileBounds.zoomLevel);
365 }
366
367 public void propertyChange(PropertyChangeEvent evt) {
368 if (evt.getPropertyName().equals(TileAddressInputPanel.TILE_BOUNDS_PROP)) {
369 TileBounds tb = (TileBounds)evt.getNewValue();
370 setTileBounds(tb);
371 fireTileBoundsChanged(tb);
372 }
373 }
374
375 protected void fireTileBoundsChanged(TileBounds tb) {
376 if (!doFireTileBoundChanged) return;
377 firePropertyChange(TILE_BOUNDS_PROP, null, tb);
378 }
379
380 class ZomeLevelChangeHandler implements ChangeListener {
381 public void stateChanged(ChangeEvent e) {
382 int zoomLevel = (Integer)spZoomLevel.getValue();
383 valMaxX.setZoomLevel(zoomLevel);
384 valMaxY.setZoomLevel(zoomLevel);
385 valMinX.setZoomLevel(zoomLevel);
386 valMinY.setZoomLevel(zoomLevel);
387 }
388 }
389
390 class TileBoundsBuilder implements ActionListener, FocusListener, ChangeListener {
391 protected void buildTileBounds() {
392 if (!valMaxX.isValid()) return;
393 if (!valMaxY.isValid()) return;
394 if (!valMinX.isValid()) return;
395 if (!valMinY.isValid()) return;
396 Point min = new Point(valMinX.getTileIndex(), valMinY.getTileIndex());
397 Point max = new Point(valMaxX.getTileIndex(), valMaxY.getTileIndex());
398 if (min.x > max.x) {
399
400 }
401 int zoomlevel = (Integer)spZoomLevel.getValue();
402 TileBounds tb = new TileBounds(min, max, zoomlevel);
403 fireTileBoundsChanged(tb);
404 }
405
406 public void focusGained(FocusEvent e) {/* irrelevant */}
407
408 public void focusLost(FocusEvent e) {
409 buildTileBounds();
410 }
411
412 public void actionPerformed(ActionEvent e) {
413 buildTileBounds();
414 }
415
416 public void stateChanged(ChangeEvent e) {
417 buildTileBounds();
418 }
419 }
420 }
421
422 /**
423 * A panel for entering the address of a single OSM tile at a given zoom level.
424 *
425 */
426 static private class TileAddressInputPanel extends JPanel {
427
428 static public final String TILE_BOUNDS_PROP = TileAddressInputPanel.class.getName() + ".tileBounds";
429
430 private JTextField tfTileAddress;
431 private TileAddressValidator valTileAddress;
432
433 protected JPanel buildTextPanel() {
434 JPanel pnl = new JPanel(new BorderLayout());
435 HtmlPanel msg = new HtmlPanel();
436 msg.setText(tr("<html>Alternatively you may enter a <strong>tile address</strong> for a single tile "
437 + "in the format <i>zoomlevel/x/y</i>, i.e. <i>15/256/223</i>. Tile addresses "
438 + "in the format <i>zoom,x,y</i> or <i>zoom;x;y</i> are valid too.</html>"));
439 pnl.add(msg);
440 return pnl;
441 }
442
443 protected JPanel buildTileAddressInputPanel() {
444 JPanel pnl = new JPanel(new GridBagLayout());
445 GridBagConstraints gc = new GridBagConstraints();
446 gc.anchor = GridBagConstraints.NORTHWEST;
447 gc.fill = GridBagConstraints.HORIZONTAL;
448 gc.weightx = 0.0;
449 gc.insets = new Insets(0,0,2,2);
450 pnl.add(new JLabel(tr("Tile address:")), gc);
451
452 gc.weightx = 1.0;
453 gc.gridx = 1;
454 pnl.add(tfTileAddress = new JTextField(), gc);
455 valTileAddress = new TileAddressValidator(tfTileAddress);
456 SelectAllOnFocusGainedDecorator.decorate(tfTileAddress);
457
458 gc.weightx = 0.0;
459 gc.gridx = 2;
460 ApplyTileAddressAction applyTileAddressAction = new ApplyTileAddressAction();
461 JButton btn = new JButton(applyTileAddressAction);
462 btn.setBorder(BorderFactory.createEmptyBorder(1,1,1,1));
463 pnl.add(btn, gc);
464 tfTileAddress.addActionListener(applyTileAddressAction);
465 return pnl;
466 }
467
468 protected void build() {
469 setLayout(new GridBagLayout());
470 GridBagConstraints gc = new GridBagConstraints();
471 gc.anchor = GridBagConstraints.NORTHWEST;
472 gc.fill = GridBagConstraints.HORIZONTAL;
473 gc.weightx = 1.0;
474 gc.insets = new Insets(0,0,5,0);
475 add(buildTextPanel(), gc);
476
477 gc.gridy = 1;
478 add(buildTileAddressInputPanel(), gc);
479
480 // filler - grab remaining space
481 gc.gridy = 2;
482 gc.fill = GridBagConstraints.BOTH;
483 gc.weighty = 1.0;
484 add(new JPanel(), gc);
485 }
486
487 public TileAddressInputPanel() {
488 setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
489 build();
490 }
491
492 protected void fireTileBoundsChanged(TileBounds tb){
493 firePropertyChange(TILE_BOUNDS_PROP, null, tb);
494 }
495
496 class ApplyTileAddressAction extends AbstractAction {
497 public ApplyTileAddressAction() {
498 putValue(SMALL_ICON, ImageProvider.get("apply"));
499 putValue(SHORT_DESCRIPTION, tr("Apply the tile address"));
500 }
501
502 public void actionPerformed(ActionEvent e) {
503 TileBounds tb = valTileAddress.getTileBounds();
504 if (tb != null) {
505 fireTileBoundsChanged(tb);
506 }
507 }
508 }
509 }
510
511 /**
512 * Validates a tile address
513 */
514 static private class TileAddressValidator extends AbstractTextComponentValidator {
515
516 private TileBounds tileBounds = null;
517
518 public TileAddressValidator(JTextComponent tc) throws IllegalArgumentException {
519 super(tc);
520 }
521
522 @Override
523 public boolean isValid() {
524 String value = getComponent().getText().trim();
525 Matcher m = Pattern.compile("(\\d+)[^\\d]+(\\d+)[^\\d]+(\\d+)").matcher(value);
526 tileBounds = null;
527 if (!m.matches()) return false;
528 int zoom;
529 try {
530 zoom = Integer.parseInt(m.group(1));
531 } catch(NumberFormatException e){
532 return false;
533 }
534 if (zoom < 0 || zoom > 18) return false;
535
536 int x;
537 try {
538 x = Integer.parseInt(m.group(2));
539 } catch(NumberFormatException e){
540 return false;
541 }
542 if (x < 0 || x >= Math.pow(2, zoom -1)) return false;
543 int y;
544 try {
545 y = Integer.parseInt(m.group(3));
546 } catch(NumberFormatException e){
547 return false;
548 }
549 if (y < 0 || y >= Math.pow(2, zoom -1)) return false;
550
551 tileBounds = new TileBounds(new Point(x,y), new Point(x,y), zoom);
552 return true;
553 }
554
555 @Override
556 public void validate() {
557 if (isValid()) {
558 feedbackValid(tr("Please enter a tile address"));
559 } else {
560 feedbackInvalid(tr("The current value isn''t a valid tile address", getComponent().getText()));
561 }
562 }
563
564 public TileBounds getTileBounds() {
565 return tileBounds;
566 }
567 }
568
569 /**
570 * Validates the x- or y-coordinate of a tile at a given zoom level.
571 *
572 */
573 static private class TileCoordinateValidator extends AbstractTextComponentValidator {
574 private int zoomLevel;
575 private int tileIndex;
576
577 public TileCoordinateValidator(JTextComponent tc) throws IllegalArgumentException {
578 super(tc);
579 }
580
581 public void setZoomLevel(int zoomLevel) {
582 this.zoomLevel = zoomLevel;
583 validate();
584 }
585
586 @Override
587 public boolean isValid() {
588 String value = getComponent().getText().trim();
589 try {
590 if (value.equals("")) {
591 tileIndex = 0;
592 } else {
593 tileIndex = Integer.parseInt(value);
594 }
595 } catch(NumberFormatException e) {
596 return false;
597 }
598 if (tileIndex < 0 || tileIndex >= Math.pow(2, zoomLevel)) return false;
599
600 return true;
601 }
602
603 @Override
604 public void validate() {
605 if (isValid()) {
606 feedbackValid(tr("Please enter a tile index"));
607 } else {
608 feedbackInvalid(tr("The current value isn''t a valid tile index for the given zoom level", getComponent().getText()));
609 }
610 }
611
612 public int getTileIndex() {
613 return tileIndex;
614 }
615 }
616
617 /**
618 * Represents a rectangular area of tiles at a given zoom level.
619 *
620 */
621 static private class TileBounds {
622 public Point min;
623 public Point max;
624 public int zoomLevel;
625
626 public TileBounds() {
627 zoomLevel = 0;
628 min = new Point(0,0);
629 max = new Point(0,0);
630 }
631
632 public TileBounds(Point min, Point max, int zoomLevel) {
633 this.min = min;
634 this.max = max;
635 this.zoomLevel = zoomLevel;
636 }
637
638 @Override
639 public String toString() {
640 StringBuffer sb = new StringBuffer();
641 sb.append("min=").append(min.x).append(",").append(min.y).append(",");
642 sb.append("max=").append(max.x).append(",").append(max.y).append(",");
643 sb.append("zoom=").append(zoomLevel);
644 return sb.toString();
645 }
646 }
647
648 /**
649 * The map view used in this bounding box chooser
650 */
651 static private class TileBoundsMapView extends JMapViewer {
652 private Point min;
653 private Point max;
654
655 public TileBoundsMapView() {
656 setBorder(BorderFactory.createLineBorder(Color.DARK_GRAY));
657 }
658
659 public void setBoundingBox(Bounds bbox){
660 if (bbox == null) {
661 min = null;
662 max = null;
663 } else {
664 int y1 = OsmMercator.LatToY(bbox.getMin().lat(), MAX_ZOOM);
665 int y2 = OsmMercator.LatToY(bbox.getMax().lat(), MAX_ZOOM);
666 int x1 = OsmMercator.LonToX(bbox.getMin().lon(), MAX_ZOOM);
667 int x2 = OsmMercator.LonToX(bbox.getMax().lon(), MAX_ZOOM);
668
669 min = new Point(Math.min(x1, x2), Math.min(y1, y2));
670 max = new Point(Math.max(x1, x2), Math.max(y1, y2));
671 }
672 repaint();
673 }
674
675 protected Point getTopLeftCoordinates() {
676 return new Point(center.x - (getWidth() / 2), center.y - (getHeight() / 2));
677 }
678
679 /**
680 * Draw the map.
681 */
682 @Override
683 public void paint(Graphics g) {
684 try {
685 super.paint(g);
686 if (min == null || max == null) return;
687 int zoomDiff = MAX_ZOOM - zoom;
688 Point tlc = getTopLeftCoordinates();
689 int x_min = (min.x >> zoomDiff) - tlc.x;
690 int y_min = (min.y >> zoomDiff) - tlc.y;
691 int x_max = (max.x >> zoomDiff) - tlc.x;
692 int y_max = (max.y >> zoomDiff) - tlc.y;
693
694 int w = x_max - x_min;
695 int h = y_max - y_min;
696 g.setColor(new Color(0.9f, 0.7f, 0.7f, 0.6f));
697 g.fillRect(x_min, y_min, w, h);
698
699 g.setColor(Color.BLACK);
700 g.drawRect(x_min, y_min, w, h);
701 } catch (Exception e) {
702 e.printStackTrace();
703 }
704 }
705 }
706}
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