source: josm/trunk/src/org/openstreetmap/josm/gui/MapView.java@ 3775

Last change on this file since 3775 was 3705, checked in by Upliner, 13 years ago

applied #5570 - implement layer opacity control
  • Property svn:eol-style set to native
File size: 27.8 KB
Line 
1// License: GPL. See LICENSE file for details.
2package org.openstreetmap.josm.gui;
3
4import static org.openstreetmap.josm.tools.I18n.tr;
5
6import java.awt.AlphaComposite;
7import java.awt.Color;
8import java.awt.Graphics;
9import java.awt.Graphics2D;
10import java.awt.Point;
11import java.awt.Rectangle;
12import java.awt.event.ComponentAdapter;
13import java.awt.event.ComponentEvent;
14import java.awt.event.MouseEvent;
15import java.awt.event.MouseMotionListener;
16import java.awt.geom.Area;
17import java.awt.geom.GeneralPath;
18import java.awt.image.BufferedImage;
19import java.beans.PropertyChangeEvent;
20import java.beans.PropertyChangeListener;
21import java.util.ArrayList;
22import java.util.Collection;
23import java.util.Collections;
24import java.util.Comparator;
25import java.util.Enumeration;
26import java.util.LinkedList;
27import java.util.List;
28import java.util.concurrent.CopyOnWriteArrayList;
29
30import javax.swing.AbstractButton;
31import javax.swing.JOptionPane;
32import javax.swing.JPanel;
33
34import org.openstreetmap.josm.Main;
35import org.openstreetmap.josm.actions.AutoScaleAction;
36import org.openstreetmap.josm.actions.mapmode.MapMode;
37import org.openstreetmap.josm.data.Bounds;
38import org.openstreetmap.josm.data.Preferences.PreferenceChangeEvent;
39import org.openstreetmap.josm.data.Preferences.PreferenceChangedListener;
40import org.openstreetmap.josm.data.SelectionChangedListener;
41import org.openstreetmap.josm.data.coor.LatLon;
42import org.openstreetmap.josm.data.osm.DataSet;
43import org.openstreetmap.josm.data.osm.DataSource;
44import org.openstreetmap.josm.data.osm.OsmPrimitive;
45import org.openstreetmap.josm.data.osm.visitor.BoundingXYVisitor;
46import org.openstreetmap.josm.data.osm.visitor.paint.PaintColors;
47import org.openstreetmap.josm.gui.layer.GpxLayer;
48import org.openstreetmap.josm.gui.layer.Layer;
49import org.openstreetmap.josm.gui.layer.MapViewPaintable;
50import org.openstreetmap.josm.gui.layer.OsmDataLayer;
51import org.openstreetmap.josm.gui.layer.markerlayer.MarkerLayer;
52import org.openstreetmap.josm.gui.layer.markerlayer.PlayHeadMarker;
53import org.openstreetmap.josm.tools.AudioPlayer;
54import org.openstreetmap.josm.tools.BugReportExceptionHandler;
55
56/**
57 * This is a component used in the MapFrame for browsing the map. It use is to
58 * provide the MapMode's enough capabilities to operate.
59 *
60 * MapView hold meta-data about the data set currently displayed, as scale level,
61 * center point viewed, what scrolling mode or editing mode is selected or with
62 * what projection the map is viewed etc..
63 *
64 * MapView is able to administrate several layers.
65 *
66 * @author imi
67 */
68public class MapView extends NavigatableComponent implements PropertyChangeListener, PreferenceChangedListener {
69
70 /**
71 * Interface to notify listeners of the change of the active layer.
72 * @author imi
73 */
74 public interface LayerChangeListener {
75 void activeLayerChange(Layer oldLayer, Layer newLayer);
76 void layerAdded(Layer newLayer);
77 void layerRemoved(Layer oldLayer);
78 }
79
80 public interface EditLayerChangeListener {
81 void editLayerChanged(OsmDataLayer oldLayer, OsmDataLayer newLayer);
82 }
83
84 /**
85 * the layer listeners
86 */
87 private static final CopyOnWriteArrayList<MapView.LayerChangeListener> layerChangeListeners = new CopyOnWriteArrayList<MapView.LayerChangeListener>();
88 private static final CopyOnWriteArrayList<EditLayerChangeListener> editLayerChangeListeners = new CopyOnWriteArrayList<EditLayerChangeListener>();
89
90 /**
91 * Removes a layer change listener
92 *
93 * @param listener the listener. Ignored if null or already registered.
94 */
95 public static void removeLayerChangeListener(MapView.LayerChangeListener listener) {
96 layerChangeListeners.remove(listener);
97 }
98
99 public static void removeEditLayerChangeListener(EditLayerChangeListener listener) {
100 editLayerChangeListeners.remove(listener);
101 }
102
103 /**
104 * Adds a layer change listener
105 *
106 * @param listener the listener. Ignored if null or already registered.
107 */
108 public static void addLayerChangeListener(MapView.LayerChangeListener listener) {
109 if (listener != null) {
110 layerChangeListeners.addIfAbsent(listener);
111 }
112 }
113
114 /**
115 * Adds an edit layer change listener
116 *
117 * @param listener the listener. Ignored if null or already registered.
118 * @param initialFire Fire an edit-layer-changed-event right after adding
119 * the listener in case there is an edit layer present
120 */
121 public static void addEditLayerChangeListener(EditLayerChangeListener listener, boolean initialFire) {
122 addEditLayerChangeListener(listener);
123 if (initialFire) {
124 if (Main.map != null && Main.map.mapView != null && Main.map.mapView.getEditLayer() != null) {
125 fireEditLayerChanged(null, Main.map.mapView.getEditLayer());
126 }
127 }
128 }
129
130 public static void addEditLayerChangeListener(EditLayerChangeListener listener) {
131 if (listener != null) {
132 editLayerChangeListeners.addIfAbsent(listener);
133 }
134 }
135
136 protected static void fireActiveLayerChanged(Layer oldLayer, Layer newLayer) {
137 for (LayerChangeListener l : layerChangeListeners) {
138 l.activeLayerChange(oldLayer, newLayer);
139 }
140 }
141
142 protected static void fireLayerAdded(Layer newLayer) {
143 for (MapView.LayerChangeListener l : MapView.layerChangeListeners) {
144 l.layerAdded(newLayer);
145 }
146 }
147
148 protected static void fireLayerRemoved(Layer layer) {
149 for (MapView.LayerChangeListener l : MapView.layerChangeListeners) {
150 l.layerRemoved(layer);
151 }
152 }
153
154 protected static void fireEditLayerChanged(OsmDataLayer oldLayer, OsmDataLayer newLayer) {
155 for (EditLayerChangeListener l : editLayerChangeListeners) {
156 l.editLayerChanged(oldLayer, newLayer);
157 }
158 }
159
160 /**
161 * A list of all layers currently loaded.
162 */
163 private final List<Layer> layers = new ArrayList<Layer>();
164 /**
165 * The play head marker: there is only one of these so it isn't in any specific layer
166 */
167 public PlayHeadMarker playHeadMarker = null;
168
169 /**
170 * The layer from the layers list that is currently active.
171 */
172 private Layer activeLayer;
173
174 private OsmDataLayer editLayer;
175
176 /**
177 * The last event performed by mouse.
178 */
179 public MouseEvent lastMEvent = new MouseEvent(this, 0, 0, 0, 0, 0, 0, false); // In case somebody reads it before first mouse move
180
181 private LinkedList<MapViewPaintable> temporaryLayers = new LinkedList<MapViewPaintable>();
182
183 private BufferedImage nonChangedLayersBuffer;
184 private BufferedImage offscreenBuffer;
185 // Layers that wasn't changed since last paint
186 private final List<Layer> nonChangedLayers = new ArrayList<Layer>();
187 private Layer changedLayer;
188 private int lastViewID;
189 private boolean paintPreferencesChanged = true;
190 private Rectangle lastClipBounds = new Rectangle();
191
192 public MapView(final JPanel contentPane) {
193 Main.pref.addPreferenceChangeListener(this);
194
195 // new MoveAction(MoveAction.Direction.UP);
196 // new MoveAction(MoveAction.Direction.DOWN);
197 // new MoveAction(MoveAction.Direction.LEFT);
198 // new MoveAction(MoveAction.Direction.RIGHT);
199
200 addComponentListener(new ComponentAdapter(){
201 @Override public void componentResized(ComponentEvent e) {
202 removeComponentListener(this);
203
204 MapSlider zoomSlider = new MapSlider(MapView.this);
205 add(zoomSlider);
206 zoomSlider.setBounds(3, 0, 114, 30);
207
208 MapScaler scaler = new MapScaler(MapView.this);
209 add(scaler);
210 scaler.setLocation(10,30);
211
212 OsmDataLayer layer = getEditLayer();
213 if (layer != null) {
214 if (!zoomToDataSetBoundingBox(layer.data)) {
215 // no bounding box defined
216 AutoScaleAction.autoScale("data");
217 }
218 } else {
219 AutoScaleAction.autoScale("layer");
220 }
221
222 new MapMover(MapView.this, contentPane);
223 }
224 });
225
226 // listend to selection changes to redraw the map
227 DataSet.addSelectionListener(repaintSelectionChangedListener);
228
229 //store the last mouse action
230 this.addMouseMotionListener(new MouseMotionListener() {
231 public void mouseDragged(MouseEvent e) {
232 mouseMoved(e);
233 }
234 public void mouseMoved(MouseEvent e) {
235 lastMEvent = e;
236 }
237 });
238 }
239
240 /**
241 * Adds a GPX layer. A GPX layer is added below the lowest data layer.
242 *
243 * @param layer the GPX layer
244 */
245 protected void addGpxLayer(GpxLayer layer) {
246 if (layers.isEmpty()) {
247 layers.add(layer);
248 return;
249 }
250 for (int i=layers.size()-1; i>= 0; i--) {
251 if (layers.get(i) instanceof OsmDataLayer) {
252 if (i == layers.size()-1) {
253 layers.add(layer);
254 } else {
255 layers.add(i+1, layer);
256 }
257 return;
258 }
259 }
260 layers.add(0, layer);
261 }
262
263 /**
264 * Add a layer to the current MapView. The layer will be added at topmost
265 * position.
266 */
267 public void addLayer(Layer layer) {
268 if (layer instanceof MarkerLayer && playHeadMarker == null) {
269 playHeadMarker = PlayHeadMarker.create();
270 }
271
272 if (layer instanceof GpxLayer) {
273 addGpxLayer((GpxLayer)layer);
274 } else if (layer.isBackgroundLayer() || layers.isEmpty()) {
275 layers.add(layer);
276 } else {
277 layers.add(0, layer);
278 }
279 fireLayerAdded(layer);
280 if (layer instanceof OsmDataLayer || activeLayer == null) {
281 // autoselect the new layer
282 setActiveLayer(layer);
283 }
284 layer.addPropertyChangeListener(this);
285 AudioPlayer.reset();
286 repaint();
287 }
288
289 @Override
290 protected DataSet getCurrentDataSet() {
291 if (editLayer != null)
292 return editLayer.data;
293 else
294 return null;
295 }
296
297 /**
298 * Replies true if the active layer is drawable.
299 *
300 * @return true if the active layer is drawable, false otherwise
301 */
302 public boolean isActiveLayerDrawable() {
303 return editLayer != null;
304 }
305
306 /**
307 * Replies true if the active layer is visible.
308 *
309 * @return true if the active layer is visible, false otherwise
310 */
311 public boolean isActiveLayerVisible() {
312 return isActiveLayerDrawable() && editLayer.isVisible();
313 }
314
315 /**
316 * Determines the next active data layer according to the following
317 * rules:
318 * <ul>
319 * <li>if there is at least one {@see OsmDataLayer} the first one
320 * becomes active</li>
321 * <li>otherwise, the top most layer of any type becomes active</li>
322 * </ul>
323 *
324 * @return the next active data layer
325 */
326 protected Layer determineNextActiveLayer(List<Layer> layersList) {
327 // First look for data layer
328 for (Layer layer:layersList) {
329 if (layer instanceof OsmDataLayer)
330 return layer;
331 }
332
333 // Then any layer
334 if (!layersList.isEmpty())
335 return layersList.get(0);
336
337 // and then give up
338 return null;
339
340 }
341
342 /**
343 * Remove the layer from the mapview. If the layer was in the list before,
344 * an LayerChange event is fired.
345 */
346 public void removeLayer(Layer layer) {
347 List<Layer> layersList = new ArrayList<Layer>(layers);
348
349 if (!layersList.remove(layer))
350 return;
351
352 setEditLayer(layersList);
353
354 if (layer == activeLayer) {
355 setActiveLayer(determineNextActiveLayer(layersList), false);
356 }
357
358 layers.remove(layer);
359 fireLayerRemoved(layer);
360 layer.removePropertyChangeListener(this);
361 layer.destroy();
362 AudioPlayer.reset();
363 repaint();
364 }
365
366 private boolean virtualNodesEnabled = false;
367
368 public void setVirtualNodesEnabled(boolean enabled) {
369 if(virtualNodesEnabled != enabled) {
370 virtualNodesEnabled = enabled;
371 repaint();
372 }
373 }
374 public boolean isVirtualNodesEnabled() {
375 return virtualNodesEnabled;
376 }
377
378 /**
379 * Moves the layer to the given new position. No event is fired, but repaints
380 * according to the new Z-Order of the layers.
381 *
382 * @param layer The layer to move
383 * @param pos The new position of the layer
384 */
385 public void moveLayer(Layer layer, int pos) {
386 int curLayerPos = layers.indexOf(layer);
387 if (curLayerPos == -1)
388 throw new IllegalArgumentException(tr("Layer not in list."));
389 if (pos == curLayerPos)
390 return; // already in place.
391 layers.remove(curLayerPos);
392 if (pos >= layers.size()) {
393 layers.add(layer);
394 } else {
395 layers.add(pos, layer);
396 }
397 setEditLayer(layers);
398 AudioPlayer.reset();
399 repaint();
400 }
401
402 public int getLayerPos(Layer layer) {
403 int curLayerPos = layers.indexOf(layer);
404 if (curLayerPos == -1)
405 throw new IllegalArgumentException(tr("Layer not in list."));
406 return curLayerPos;
407 }
408
409 /**
410 * Creates a list of the visible layers in Z-Order, the layer with the lowest Z-Order
411 * first, layer with the highest Z-Order last.
412 *
413 * @return a list of the visible in Z-Order, the layer with the lowest Z-Order
414 * first, layer with the highest Z-Order last.
415 */
416 protected List<Layer> getVisibleLayersInZOrder() {
417 ArrayList<Layer> ret = new ArrayList<Layer>();
418 for (Layer l: layers) {
419 if (l.isVisible()) {
420 ret.add(l);
421 }
422 }
423 // sort according to position in the list of layers, with one exception:
424 // an active data layer always becomes a higher Z-Order than all other
425 // data layers
426 //
427 Collections.sort(
428 ret,
429 new Comparator<Layer>() {
430 public int compare(Layer l1, Layer l2) {
431 if (l1 instanceof OsmDataLayer && l2 instanceof OsmDataLayer) {
432 if (l1 == getActiveLayer()) return -1;
433 if (l2 == getActiveLayer()) return 1;
434 return Integer.valueOf(layers.indexOf(l1)).compareTo(layers.indexOf(l2));
435 } else
436 return Integer.valueOf(layers.indexOf(l1)).compareTo(layers.indexOf(l2));
437 }
438 }
439 );
440 Collections.reverse(ret);
441 return ret;
442 }
443
444 private void paintLayer(Layer layer, Graphics2D g, Bounds box) {
445 if (layer.getOpacity() < 1) {
446 g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,(float)layer.getOpacity()));
447 }
448 layer.paint(g, this, box);
449 g.setPaintMode();
450 }
451
452 /**
453 * Draw the component.
454 */
455 @Override public void paint(Graphics g) {
456 if (BugReportExceptionHandler.exceptionHandlingInProgress())
457 return;
458
459 if (center == null)
460 return; // no data loaded yet.
461
462 List<Layer> visibleLayers = getVisibleLayersInZOrder();
463
464 int nonChangedLayersCount = 0;
465 for (Layer l: visibleLayers) {
466 if (l.isChanged() || l == changedLayer) {
467 break;
468 } else {
469 nonChangedLayersCount++;
470 }
471 }
472
473 boolean canUseBuffer = !paintPreferencesChanged && nonChangedLayers.size() <= nonChangedLayersCount &&
474 lastViewID == getViewID() && lastClipBounds.contains(g.getClipBounds());
475 if (canUseBuffer) {
476 for (int i=0; i<nonChangedLayers.size(); i++) {
477 if (visibleLayers.get(i) != nonChangedLayers.get(i)) {
478 canUseBuffer = false;
479 break;
480 }
481 }
482 }
483
484 if (null == offscreenBuffer || offscreenBuffer.getWidth() != getWidth() || offscreenBuffer.getHeight() != getHeight()) {
485 offscreenBuffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_3BYTE_BGR);
486 }
487
488 Graphics2D tempG = offscreenBuffer.createGraphics();
489 tempG.setClip(g.getClip());
490 Bounds box = getLatLonBounds(g.getClipBounds());
491
492 if (!canUseBuffer || nonChangedLayersBuffer == null) {
493 if (null == nonChangedLayersBuffer || nonChangedLayersBuffer.getWidth() != getWidth() || nonChangedLayersBuffer.getHeight() != getHeight()) {
494 nonChangedLayersBuffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_3BYTE_BGR);
495 }
496 Graphics2D g2 = nonChangedLayersBuffer.createGraphics();
497 g2.setClip(g.getClip());
498 g2.setColor(PaintColors.BACKGROUND.get());
499 g2.fillRect(0, 0, getWidth(), getHeight());
500
501 for (int i=0; i<nonChangedLayersCount; i++) {
502 paintLayer(visibleLayers.get(i),g2, box);
503 }
504 } else {
505 // Maybe there were more unchanged layers then last time - draw them to buffer
506 if (nonChangedLayers.size() != nonChangedLayersCount) {
507 Graphics2D g2 = nonChangedLayersBuffer.createGraphics();
508 g2.setClip(g.getClip());
509 for (int i=nonChangedLayers.size(); i<nonChangedLayersCount; i++) {
510 paintLayer(visibleLayers.get(i),g2, box);
511 }
512 }
513 }
514
515 nonChangedLayers.clear();
516 changedLayer = null;
517 for (int i=0; i<nonChangedLayersCount; i++) {
518 nonChangedLayers.add(visibleLayers.get(i));
519 }
520 lastViewID = getViewID();
521 paintPreferencesChanged = false;
522 lastClipBounds = g.getClipBounds();
523
524 tempG.drawImage(nonChangedLayersBuffer, 0, 0, null);
525
526 for (int i=nonChangedLayersCount; i<visibleLayers.size(); i++) {
527 paintLayer(visibleLayers.get(i),tempG, box);
528 }
529
530 for (MapViewPaintable mvp : temporaryLayers) {
531 mvp.paint(tempG, this, box);
532 }
533
534 // draw world borders
535 tempG.setColor(Color.WHITE);
536 Bounds b = getProjection().getWorldBoundsLatLon();
537 double lat = b.getMin().lat();
538 double lon = b.getMin().lon();
539
540 Point p = getPoint(b.getMin());
541
542 GeneralPath path = new GeneralPath();
543
544 path.moveTo(p.x, p.y);
545 double max = b.getMax().lat();
546 for(; lat <= max; lat += 1.0)
547 {
548 p = getPoint(new LatLon(lat >= max ? max : lat, lon));
549 path.lineTo(p.x, p.y);
550 }
551 lat = max; max = b.getMax().lon();
552 for(; lon <= max; lon += 1.0)
553 {
554 p = getPoint(new LatLon(lat, lon >= max ? max : lon));
555 path.lineTo(p.x, p.y);
556 }
557 lon = max; max = b.getMin().lat();
558 for(; lat >= max; lat -= 1.0)
559 {
560 p = getPoint(new LatLon(lat <= max ? max : lat, lon));
561 path.lineTo(p.x, p.y);
562 }
563 lat = max; max = b.getMin().lon();
564 for(; lon >= max; lon -= 1.0)
565 {
566 p = getPoint(new LatLon(lat, lon <= max ? max : lon));
567 path.lineTo(p.x, p.y);
568 }
569
570 int w = getWidth();
571 int h = getHeight();
572
573 // Work around OpenJDK having problems when drawing out of bounds
574 final Area border = new Area(path);
575 // Make the viewport 1px larger in every direction to prevent an
576 // additional 1px border when zooming in
577 final Area viewport = new Area(new Rectangle(-1, -1, w + 2, h + 2));
578 border.intersect(viewport);
579 tempG.draw(border);
580
581 if (Main.map.filterDialog != null) {
582 Main.map.filterDialog.drawOSDText(tempG);
583 }
584
585 if (playHeadMarker != null) {
586 playHeadMarker.paint(tempG, this);
587 }
588
589 g.drawImage(offscreenBuffer, 0, 0, null);
590 super.paint(g);
591 }
592
593 /**
594 * Set the new dimension to the view.
595 */
596 public void recalculateCenterScale(BoundingXYVisitor box) {
597 if (box == null) {
598 box = new BoundingXYVisitor();
599 }
600 if (box.getBounds() == null) {
601 box.visit(getProjection().getWorldBoundsLatLon());
602 }
603 if (!box.hasExtend()) {
604 box.enlargeBoundingBox();
605 }
606
607 zoomTo(box.getBounds());
608 }
609
610 /**
611 * @return An unmodifiable collection of all layers
612 */
613 public Collection<Layer> getAllLayers() {
614 return Collections.unmodifiableCollection(layers);
615 }
616
617 /**
618 * @return An unmodifiable ordered list of all layers
619 */
620 public List<Layer> getAllLayersAsList() {
621 return Collections.unmodifiableList(layers);
622 }
623
624 /**
625 * Replies an unmodifiable list of layers of a certain type.
626 *
627 * Example:
628 * <pre>
629 * List<WMSLayer> wmsLayers = getLayersOfType(WMSLayer.class);
630 * </pre>
631 *
632 * @return an unmodifiable list of layers of a certain type.
633 */
634 public <T> List<T> getLayersOfType(Class<T> ofType) {
635 ArrayList<T> ret = new ArrayList<T>();
636 for (Layer layer : getAllLayersAsList()) {
637 if (ofType.isInstance(layer)) {
638 ret.add(ofType.cast(layer));
639 }
640 }
641 return ret;
642 }
643
644 /**
645 * Replies the number of layers managed by this mav view
646 *
647 * @return the number of layers managed by this mav view
648 */
649 public int getNumLayers() {
650 return layers.size();
651 }
652
653 /**
654 * Replies true if there is at least one layer in this map view
655 *
656 * @return true if there is at least one layer in this map view
657 */
658 public boolean hasLayers() {
659 return getNumLayers() > 0;
660 }
661
662 private void setEditLayer(List<Layer> layersList) {
663 OsmDataLayer newEditLayer = layersList.contains(editLayer)?editLayer:null;
664 OsmDataLayer oldEditLayer = editLayer;
665
666 // Find new edit layer
667 if (activeLayer != editLayer || !layersList.contains(editLayer)) {
668 if (activeLayer instanceof OsmDataLayer && layersList.contains(activeLayer)) {
669 newEditLayer = (OsmDataLayer) activeLayer;
670 } else {
671 for (Layer layer:layersList) {
672 if (layer instanceof OsmDataLayer) {
673 newEditLayer = (OsmDataLayer) layer;
674 break;
675 }
676 }
677 }
678 }
679
680 // Set new edit layer
681 if (newEditLayer != editLayer) {
682 if (newEditLayer == null) {
683 getCurrentDataSet().setSelected();
684 }
685
686 editLayer = newEditLayer;
687 fireEditLayerChanged(oldEditLayer, newEditLayer);
688 refreshTitle();
689 }
690
691 }
692
693 /**
694 * Sets the active layer to <code>layer</code>. If <code>layer</code> is an instance
695 * of {@see OsmDataLayer} also sets {@see #editLayer} to <code>layer</code>.
696 *
697 * @param layer the layer to be activate; must be one of the layers in the list of layers
698 * @exception IllegalArgumentException thrown if layer is not in the lis of layers
699 */
700 public void setActiveLayer(Layer layer) {
701 setActiveLayer(layer, true);
702 }
703
704 private void setActiveLayer(Layer layer, boolean setEditLayer) {
705 if (layer != null && !layers.contains(layer))
706 throw new IllegalArgumentException(tr("Layer ''{0}'' must be in list of layers", layer.toString()));
707
708 if (layer == activeLayer)
709 return;
710
711 Layer old = activeLayer;
712 activeLayer = layer;
713 if (setEditLayer) {
714 setEditLayer(layers);
715 }
716 fireActiveLayerChanged(old, layer);
717
718 /* This only makes the buttons look disabled. Disabling the actions as well requires
719 * the user to re-select the tool after i.e. moving a layer. While testing I found
720 * that I switch layers and actions at the same time and it was annoying to mind the
721 * order. This way it works as visual clue for new users */
722 for (Enumeration<AbstractButton> e = Main.map.toolGroup.getElements() ; e.hasMoreElements() ;) {
723 AbstractButton x=e.nextElement();
724 x.setEnabled(((MapMode)x.getAction()).layerIsSupported(layer));
725 }
726 AudioPlayer.reset();
727 repaint();
728 }
729
730 /**
731 * Replies the currently active layer
732 *
733 * @return the currently active layer (may be null)
734 */
735 public Layer getActiveLayer() {
736 return activeLayer;
737 }
738
739 /**
740 * Replies the current edit layer, if any
741 *
742 * @return the current edit layer. May be null.
743 */
744 public OsmDataLayer getEditLayer() {
745 return editLayer;
746 }
747
748 /**
749 * replies true if the list of layers managed by this map view contain layer
750 *
751 * @param layer the layer
752 * @return true if the list of layers managed by this map view contain layer
753 */
754 public boolean hasLayer(Layer layer) {
755 return layers.contains(layer);
756 }
757
758 /**
759 * Tries to zoom to the download boundingbox[es] of the current edit layer
760 * (aka {@link OsmDataLayer}). If the edit layer has multiple download bounding
761 * boxes it zooms to a large virtual bounding box containing all smaller ones.
762 *
763 * @return <code>true</code> if a zoom operation has been performed
764 */
765 public boolean zoomToDataSetBoundingBox(DataSet ds) {
766 // In case we already have an existing data layer ...
767 OsmDataLayer layer= getEditLayer();
768 if (layer == null)
769 return false;
770 Collection<DataSource> dataSources = ds.dataSources;
771 // ... with bounding box[es] of data loaded from OSM or a file...
772 BoundingXYVisitor bbox = new BoundingXYVisitor();
773 for (DataSource source : dataSources) {
774 bbox.visit(source.bounds);
775 }
776 if (bbox.hasExtend()) {
777 // ... we zoom to it's bounding box
778 recalculateCenterScale(bbox);
779 return true;
780 }
781 return false;
782 }
783
784 public boolean addTemporaryLayer(MapViewPaintable mvp) {
785 if (temporaryLayers.contains(mvp)) return false;
786 return temporaryLayers.add(mvp);
787 }
788
789 public boolean removeTemporaryLayer(MapViewPaintable mvp) {
790 return temporaryLayers.remove(mvp);
791 }
792
793 public void propertyChange(PropertyChangeEvent evt) {
794 if (evt.getPropertyName().equals(Layer.VISIBLE_PROP)) {
795 repaint();
796 } else if (evt.getPropertyName().equals(Layer.OPACITY_PROP)) {
797 Layer l = (Layer)evt.getSource();
798 if (l.isVisible()) {
799 changedLayer = l;
800 repaint();
801 }
802 } else if (evt.getPropertyName().equals(OsmDataLayer.REQUIRES_SAVE_TO_DISK_PROP)
803 || evt.getPropertyName().equals(OsmDataLayer.REQUIRES_UPLOAD_TO_SERVER_PROP)) {
804 OsmDataLayer layer = (OsmDataLayer)evt.getSource();
805 if (layer == getEditLayer()) {
806 refreshTitle();
807 }
808 }
809 }
810
811 protected void refreshTitle() {
812 boolean dirty = editLayer != null && (editLayer.requiresSaveToFile() || editLayer.requiresUploadToServer());
813 if (dirty) {
814 JOptionPane.getFrameForComponent(Main.parent).setTitle("* " + tr("Java OpenStreetMap Editor"));
815 } else {
816 JOptionPane.getFrameForComponent(Main.parent).setTitle(tr("Java OpenStreetMap Editor"));
817 }
818 }
819
820 public void preferenceChanged(PreferenceChangeEvent e) {
821 paintPreferencesChanged = true;
822 }
823
824 private SelectionChangedListener repaintSelectionChangedListener = new SelectionChangedListener(){
825 public void selectionChanged(Collection<? extends OsmPrimitive> newSelection) {
826 repaint();
827 }
828 };
829
830 public void destroy() {
831 Main.pref.removePreferenceChangeListener(this);
832 DataSet.removeSelectionListener(repaintSelectionChangedListener);
833 }
834
835}
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