source: josm/trunk/src/org/openstreetmap/josm/gui/MapView.java@ 3128

Last change on this file since 3128 was 3128, checked in by jttt, 16 years ago

Different fix for #4728 - discard offscreen buffer for all layer in MapView
  • Property svn:eol-style set to native
File size: 27.1 KB
Line 
1// License: GPL. See LICENSE file for details.
2
3package org.openstreetmap.josm.gui;
4
5import static org.openstreetmap.josm.tools.I18n.tr;
6
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.JComponent;
32import javax.swing.JOptionPane;
33
34import org.openstreetmap.josm.Main;
35import org.openstreetmap.josm.actions.AutoScaleAction;
36import org.openstreetmap.josm.actions.JosmAction;
37import org.openstreetmap.josm.actions.MoveAction;
38import org.openstreetmap.josm.actions.mapmode.MapMode;
39import org.openstreetmap.josm.data.Bounds;
40import org.openstreetmap.josm.data.SelectionChangedListener;
41import org.openstreetmap.josm.data.Preferences.PreferenceChangeEvent;
42import org.openstreetmap.josm.data.Preferences.PreferenceChangedListener;
43import org.openstreetmap.josm.data.coor.LatLon;
44import org.openstreetmap.josm.data.osm.DataSet;
45import org.openstreetmap.josm.data.osm.DataSource;
46import org.openstreetmap.josm.data.osm.OsmPrimitive;
47import org.openstreetmap.josm.data.osm.visitor.BoundingXYVisitor;
48import org.openstreetmap.josm.data.osm.visitor.paint.PaintColors;
49import org.openstreetmap.josm.gui.layer.GpxLayer;
50import org.openstreetmap.josm.gui.layer.Layer;
51import org.openstreetmap.josm.gui.layer.MapViewPaintable;
52import org.openstreetmap.josm.gui.layer.OsmDataLayer;
53import org.openstreetmap.josm.gui.layer.markerlayer.MarkerLayer;
54import org.openstreetmap.josm.gui.layer.markerlayer.PlayHeadMarker;
55import org.openstreetmap.josm.tools.AudioPlayer;
56
57/**
58 * This is a component used in the MapFrame for browsing the map. It use is to
59 * provide the MapMode's enough capabilities to operate.
60 *
61 * MapView hold meta-data about the data set currently displayed, as scale level,
62 * center point viewed, what scrolling mode or editing mode is selected or with
63 * what projection the map is viewed etc..
64 *
65 * MapView is able to administrate several layers.
66 *
67 * @author imi
68 */
69public class MapView extends NavigatableComponent implements PropertyChangeListener, PreferenceChangedListener {
70
71 /**
72 * Interface to notify listeners of the change of the active layer.
73 * @author imi
74 */
75 public interface LayerChangeListener {
76 void activeLayerChange(Layer oldLayer, Layer newLayer);
77 void layerAdded(Layer newLayer);
78 void layerRemoved(Layer oldLayer);
79 }
80
81 public interface EditLayerChangeListener {
82 void editLayerChanged(OsmDataLayer oldLayer, OsmDataLayer newLayer);
83 }
84
85 /**
86 * the layer listeners
87 */
88 private static final CopyOnWriteArrayList<MapView.LayerChangeListener> layerChangeListeners = new CopyOnWriteArrayList<MapView.LayerChangeListener>();
89 private static final CopyOnWriteArrayList<EditLayerChangeListener> editLayerChangeListeners = new CopyOnWriteArrayList<EditLayerChangeListener>();
90
91 /**
92 * Removes a layer change listener
93 *
94 * @param listener the listener. Ignored if null or already registered.
95 */
96 public static void removeLayerChangeListener(MapView.LayerChangeListener listener) {
97 layerChangeListeners.remove(listener);
98 }
99
100 public static void removeEditLayerChangeListener(EditLayerChangeListener listener) {
101 editLayerChangeListeners.remove(listener);
102 }
103
104 /**
105 * Adds a layer change listener
106 *
107 * @param listener the listener. Ignored if null or already registered.
108 */
109 public static void addLayerChangeListener(MapView.LayerChangeListener listener) {
110 if (listener != null) {
111 layerChangeListeners.addIfAbsent(listener);
112 }
113 }
114
115 /**
116 * Adds a edit layer change listener
117 *
118 * @param listener the listener. Ignored if null or already registered.
119 * @param initialFire Fire an edit-layer-changed-event right after adding the listener.
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;
180
181 private LinkedList<MapViewPaintable> temporaryLayers = new LinkedList<MapViewPaintable>();
182
183 private BufferedImage offscreenBuffer;
184 // Layers that wasn't changed since last paint
185 private final List<Layer> nonChangedLayers = new ArrayList<Layer>();
186 private int lastViewID;
187 private boolean paintPreferencesChanged = true;
188
189 public MapView() {
190 Main.pref.addPreferenceChangeListener(this);
191 addComponentListener(new ComponentAdapter(){
192 @Override public void componentResized(ComponentEvent e) {
193 removeComponentListener(this);
194
195 MapSlider zoomSlider = new MapSlider(MapView.this);
196 add(zoomSlider);
197 zoomSlider.setBounds(3, 0, 114, 30);
198
199 MapScaler scaler = new MapScaler(MapView.this);
200 add(scaler);
201 scaler.setLocation(10,30);
202
203 OsmDataLayer layer = getEditLayer();
204 if (layer != null) {
205 if (!zoomToDataSetBoundingBox(layer.data)) {
206 // no bounding box defined
207 new AutoScaleAction("data").actionPerformed(null);
208 }
209 } else {
210 new AutoScaleAction("layer").actionPerformed(null);
211 }
212
213 new MapMover(MapView.this, Main.contentPane);
214 JosmAction mv;
215 mv = new MoveAction(MoveAction.Direction.UP);
216 if (mv.getShortcut() != null) {
217 Main.contentPane.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(mv.getShortcut().getKeyStroke(), "UP");
218 Main.contentPane.getActionMap().put("UP", mv);
219 }
220 mv = new MoveAction(MoveAction.Direction.DOWN);
221 if (mv.getShortcut() != null) {
222 Main.contentPane.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(mv.getShortcut().getKeyStroke(), "DOWN");
223 Main.contentPane.getActionMap().put("DOWN", mv);
224 }
225 mv = new MoveAction(MoveAction.Direction.LEFT);
226 if (mv.getShortcut() != null) {
227 Main.contentPane.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(mv.getShortcut().getKeyStroke(), "LEFT");
228 Main.contentPane.getActionMap().put("LEFT", mv);
229 }
230 mv = new MoveAction(MoveAction.Direction.RIGHT);
231 if (mv.getShortcut() != null) {
232 Main.contentPane.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(mv.getShortcut().getKeyStroke(), "RIGHT");
233 Main.contentPane.getActionMap().put("RIGHT", mv);
234 }
235 }
236 });
237
238 // listend to selection changes to redraw the map
239 DataSet.selListeners.add(new SelectionChangedListener(){
240 public void selectionChanged(Collection<? extends OsmPrimitive> newSelection) {
241 repaint();
242 }
243 });
244
245 //store the last mouse action
246 this.addMouseMotionListener(new MouseMotionListener() {
247 public void mouseDragged(MouseEvent e) {
248 mouseMoved(e);
249 }
250 public void mouseMoved(MouseEvent e) {
251 lastMEvent = e;
252 }
253 });
254 }
255
256 /**
257 * Adds a GPX layer. A GPX layer is added below the lowest data layer.
258 *
259 * @param layer the GPX layer
260 */
261 protected void addGpxLayer(GpxLayer layer) {
262 if (layers.isEmpty()) {
263 layers.add(layer);
264 return;
265 }
266 for (int i=layers.size()-1; i>= 0; i--) {
267 if (layers.get(i) instanceof OsmDataLayer) {
268 if (i == layers.size()-1) {
269 layers.add(layer);
270 } else {
271 layers.add(i+1, layer);
272 }
273 return;
274 }
275 }
276 layers.add(layer);
277 }
278
279 /**
280 * Add a layer to the current MapView. The layer will be added at topmost
281 * position.
282 */
283 public void addLayer(Layer layer) {
284 if (layer instanceof MarkerLayer && playHeadMarker == null) {
285 playHeadMarker = PlayHeadMarker.create();
286 }
287
288 if (layer instanceof GpxLayer) {
289 addGpxLayer((GpxLayer)layer);
290 } else if (layer.isBackgroundLayer() || layers.isEmpty()) {
291 layers.add(layer);
292 } else {
293 layers.add(0, layer);
294 }
295 fireLayerAdded(layer);
296 if (layer instanceof OsmDataLayer || activeLayer == null) {
297 // autoselect the new layer
298 setActiveLayer(layer);
299 }
300 layer.addPropertyChangeListener(this);
301 AudioPlayer.reset();
302 repaint();
303 }
304
305 @Override
306 protected DataSet getCurrentDataSet() {
307 if (editLayer != null)
308 return editLayer.data;
309 else
310 return null;
311 }
312
313 /**
314 * Replies true if the active layer is drawable.
315 *
316 * @return true if the active layer is drawable, false otherwise
317 */
318 public boolean isActiveLayerDrawable() {
319 return editLayer != null;
320 }
321
322 /**
323 * Replies true if the active layer is visible.
324 *
325 * @return true if the active layer is visible, false otherwise
326 */
327 public boolean isActiveLayerVisible() {
328 return isActiveLayerDrawable() && editLayer.isVisible();
329 }
330
331 /**
332 * Determines the next active data layer according to the following
333 * rules:
334 * <ul>
335 * <li>if there is at least one {@see OsmDataLayer} the first one
336 * becomes active</li>
337 * <li>otherwise, the top most layer of any type becomes active</li>
338 * </ul>
339 *
340 * @return the next active data layer
341 */
342 protected Layer determineNextActiveLayer(List<Layer> layersList) {
343 // First look for data layer
344 for (Layer layer:layersList) {
345 if (layer instanceof OsmDataLayer)
346 return layer;
347 }
348
349 // Then any layer
350 if (!layersList.isEmpty())
351 return layersList.get(0);
352
353 // and then give up
354 return null;
355
356 }
357
358 /**
359 * Remove the layer from the mapview. If the layer was in the list before,
360 * an LayerChange event is fired.
361 */
362 public void removeLayer(Layer layer) {
363 List<Layer> layersList = new ArrayList<Layer>(layers);
364
365 if (!layersList.remove(layer))
366 return;
367
368 setEditLayer(layersList);
369
370 if (layer == activeLayer) {
371 setActiveLayer(determineNextActiveLayer(layersList), false);
372 }
373
374 layers.remove(layer);
375 fireLayerRemoved(layer);
376 layer.removePropertyChangeListener(this);
377 layer.destroy();
378 AudioPlayer.reset();
379 repaint();
380 }
381
382 private boolean virtualNodesEnabled = false;
383
384 public void setVirtualNodesEnabled(boolean enabled) {
385 if(virtualNodesEnabled != enabled) {
386 virtualNodesEnabled = enabled;
387 repaint();
388 }
389 }
390 public boolean isVirtualNodesEnabled() {
391 return virtualNodesEnabled;
392 }
393
394 /**
395 * Moves the layer to the given new position. No event is fired, but repaints
396 * according to the new Z-Order of the layers.
397 *
398 * @param layer The layer to move
399 * @param pos The new position of the layer
400 */
401 public void moveLayer(Layer layer, int pos) {
402 int curLayerPos = layers.indexOf(layer);
403 if (curLayerPos == -1)
404 throw new IllegalArgumentException(tr("Layer not in list."));
405 if (pos == curLayerPos)
406 return; // already in place.
407 layers.remove(curLayerPos);
408 if (pos >= layers.size()) {
409 layers.add(layer);
410 } else {
411 layers.add(pos, layer);
412 }
413 setEditLayer(layers);
414 AudioPlayer.reset();
415 repaint();
416 }
417
418 public int getLayerPos(Layer layer) {
419 int curLayerPos = layers.indexOf(layer);
420 if (curLayerPos == -1)
421 throw new IllegalArgumentException(tr("Layer not in list."));
422 return curLayerPos;
423 }
424
425 /**
426 * Creates a list of the visible layers in Z-Order, the layer with the lowest Z-Order
427 * first, layer with the highest Z-Order last.
428 *
429 * @return a list of the visible in Z-Order, the layer with the lowest Z-Order
430 * first, layer with the highest Z-Order last.
431 */
432 protected List<Layer> getVisibleLayersInZOrder() {
433 ArrayList<Layer> ret = new ArrayList<Layer>();
434 for (Layer l: layers) {
435 if (l.isVisible()) {
436 ret.add(l);
437 }
438 }
439 // sort according to position in the list of layers, with one exception:
440 // an active data layer always becomes a higher Z-Order than all other
441 // data layers
442 //
443 Collections.sort(
444 ret,
445 new Comparator<Layer>() {
446 public int compare(Layer l1, Layer l2) {
447 if (l1 instanceof OsmDataLayer && l2 instanceof OsmDataLayer) {
448 if (l1 == getActiveLayer()) return -1;
449 if (l2 == getActiveLayer()) return 1;
450 return Integer.valueOf(layers.indexOf(l1)).compareTo(layers.indexOf(l2));
451 } else
452 return Integer.valueOf(layers.indexOf(l1)).compareTo(layers.indexOf(l2));
453 }
454 }
455 );
456 Collections.reverse(ret);
457 return ret;
458 }
459
460 /**
461 * Draw the component.
462 */
463 @Override public void paint(Graphics g) {
464 if (center == null)
465 return; // no data loaded yet.
466
467 List<Layer> visibleLayers = getVisibleLayersInZOrder();
468
469 int nonChangedLayersCount = 0;
470 for (Layer l: visibleLayers) {
471 if (l.isChanged()) {
472 break;
473 } else {
474 nonChangedLayersCount++;
475 }
476 }
477
478 boolean canUseBuffer = !paintPreferencesChanged && nonChangedLayers.size() <= nonChangedLayersCount && lastViewID == getViewID();
479 if (canUseBuffer) {
480 for (int i=0; i<nonChangedLayers.size(); i++) {
481 if (visibleLayers.get(i) != nonChangedLayers.get(i)) {
482 canUseBuffer = false;
483 break;
484 }
485 }
486 }
487
488 Graphics2D tempG = (Graphics2D) g;
489 Bounds box = getLatLonBounds(g.getClipBounds());
490
491 if (!canUseBuffer || offscreenBuffer == null) {
492 if (null == offscreenBuffer || offscreenBuffer.getWidth() != getWidth() || offscreenBuffer.getHeight() != getHeight()) {
493 offscreenBuffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_3BYTE_BGR);
494 }
495 Graphics2D g2 = offscreenBuffer.createGraphics();
496 g2.setClip(g.getClip());
497 g2.setColor(PaintColors.BACKGROUND.get());
498 g2.fillRect(0, 0, getWidth(), getHeight());
499
500 for (int i=0; i<nonChangedLayersCount; i++) {
501 visibleLayers.get(i).paint(g2, this, box);
502 }
503 } else {
504 // Maybe there were more unchanged layers then last time - draw them to buffer
505 if (nonChangedLayers.size() != nonChangedLayersCount) {
506 Graphics2D g2 = offscreenBuffer.createGraphics();
507 g2.setClip(g.getClip());
508 for (int i=nonChangedLayers.size(); i<nonChangedLayersCount; i++) {
509 visibleLayers.get(i).paint(g2, this, box);
510 }
511 }
512 }
513
514 nonChangedLayers.clear();
515 for (int i=0; i<nonChangedLayersCount; i++) {
516 nonChangedLayers.add(visibleLayers.get(i));
517 }
518 lastViewID = getViewID();
519 paintPreferencesChanged = false;
520
521 tempG.drawImage(offscreenBuffer, 0, 0, null);
522
523 for (int i=nonChangedLayersCount; i<visibleLayers.size(); i++) {
524 visibleLayers.get(i).paint(tempG, this, box);
525 }
526
527 for (MapViewPaintable mvp : temporaryLayers) {
528 mvp.paint(tempG, this, box);
529 }
530
531 // draw world borders
532 tempG.setColor(Color.WHITE);
533 Bounds b = getProjection().getWorldBoundsLatLon();
534 double lat = b.getMin().lat();
535 double lon = b.getMin().lon();
536
537 Point p = getPoint(b.getMin());
538
539 GeneralPath path = new GeneralPath();
540
541 path.moveTo(p.x, p.y);
542 double max = b.getMax().lat();
543 for(; lat <= max; lat += 1.0)
544 {
545 p = getPoint(new LatLon(lat >= max ? max : lat, lon));
546 path.lineTo(p.x, p.y);
547 }
548 lat = max; max = b.getMax().lon();
549 for(; lon <= max; lon += 1.0)
550 {
551 p = getPoint(new LatLon(lat, lon >= max ? max : lon));
552 path.lineTo(p.x, p.y);
553 }
554 lon = max; max = b.getMin().lat();
555 for(; lat >= max; lat -= 1.0)
556 {
557 p = getPoint(new LatLon(lat <= max ? max : lat, lon));
558 path.lineTo(p.x, p.y);
559 }
560 lat = max; max = b.getMin().lon();
561 for(; lon >= max; lon -= 1.0)
562 {
563 p = getPoint(new LatLon(lat, lon <= max ? max : lon));
564 path.lineTo(p.x, p.y);
565 }
566
567 int w = getWidth();
568 int h = getHeight();
569
570 // Work around OpenJDK having problems when drawing out of bounds
571 final Area border = new Area(path);
572 // Make the viewport 1px larger in every direction to prevent an
573 // additional 1px border when zooming in
574 final Area viewport = new Area(new Rectangle(-1, -1, w + 2, h + 2));
575 border.intersect(viewport);
576 tempG.draw(border);
577
578 if (playHeadMarker != null) {
579 playHeadMarker.paint(tempG, this);
580 }
581
582 super.paint(g);
583 }
584
585 /**
586 * Set the new dimension to the view.
587 */
588 public void recalculateCenterScale(BoundingXYVisitor box) {
589 if (box == null) {
590 box = new BoundingXYVisitor();
591 }
592 if (box.getBounds() == null) {
593 box.visit(getProjection().getWorldBoundsLatLon());
594 }
595 if (!box.hasExtend()) {
596 box.enlargeBoundingBox();
597 }
598
599 zoomTo(box.getBounds());
600 }
601
602 /**
603 * @return An unmodifiable collection of all layers
604 */
605 public Collection<Layer> getAllLayers() {
606 return Collections.unmodifiableCollection(layers);
607 }
608
609 /**
610 * @return An unmodifiable ordered list of all layers
611 */
612 public List<Layer> getAllLayersAsList() {
613 return Collections.unmodifiableList(layers);
614 }
615
616 /**
617 * Replies an unmodifiable list of layers of a certain type.
618 *
619 * Example:
620 * <pre>
621 * List<WMSLayer> wmsLayers = getLayersOfType(WMSLayer.class);
622 * </pre>
623 *
624 * @return an unmodifiable list of layers of a certain type.
625 */
626 public <T> List<T> getLayersOfType(Class<T> ofType) {
627 ArrayList<T> ret = new ArrayList<T>();
628 for (Layer layer : getAllLayersAsList()) {
629 if (ofType.isInstance(layer)) {
630 ret.add(ofType.cast(layer));
631 }
632 }
633 return ret;
634 }
635
636 /**
637 * Replies the number of layers managed by this mav view
638 *
639 * @return the number of layers managed by this mav view
640 */
641 public int getNumLayers() {
642 return layers.size();
643 }
644
645 /**
646 * Replies true if there is at least one layer in this map view
647 *
648 * @return true if there is at least one layer in this map view
649 */
650 public boolean hasLayers() {
651 return getNumLayers() > 0;
652 }
653
654 private void setEditLayer(List<Layer> layersList) {
655 OsmDataLayer newEditLayer = layersList.contains(editLayer)?editLayer:null;
656 OsmDataLayer oldEditLayer = editLayer;
657
658 // Find new edit layer
659 if (activeLayer != editLayer || !layersList.contains(editLayer)) {
660 if (activeLayer instanceof OsmDataLayer && layersList.contains(activeLayer)) {
661 newEditLayer = (OsmDataLayer) activeLayer;
662 } else {
663 for (Layer layer:layersList) {
664 if (layer instanceof OsmDataLayer) {
665 newEditLayer = (OsmDataLayer) layer;
666 break;
667 }
668 }
669 }
670 }
671
672 // Set new edit layer
673 if (newEditLayer != editLayer) {
674 if (newEditLayer == null) {
675 getCurrentDataSet().setSelected();
676 }
677
678 editLayer = newEditLayer;
679 fireEditLayerChanged(oldEditLayer, newEditLayer);
680 refreshTitle();
681 }
682
683 }
684
685 /**
686 * Sets the active layer to <code>layer</code>. If <code>layer</code> is an instance
687 * of {@see OsmDataLayer} also sets {@see #editLayer} to <code>layer</code>.
688 *
689 * @param layer the layer to be activate; must be one of the layers in the list of layers
690 * @exception IllegalArgumentException thrown if layer is not in the lis of layers
691 */
692 public void setActiveLayer(Layer layer) {
693 setActiveLayer(layer, true);
694 }
695
696 private void setActiveLayer(Layer layer, boolean setEditLayer) {
697 if (layer != null && !layers.contains(layer))
698 throw new IllegalArgumentException(tr("Layer ''{0}'' must be in list of layers", layer.toString()));
699
700 if (layer == activeLayer)
701 return;
702
703 Layer old = activeLayer;
704 activeLayer = layer;
705 if (setEditLayer) {
706 setEditLayer(layers);
707 }
708 fireActiveLayerChanged(old, layer);
709
710 /* This only makes the buttons look disabled. Disabling the actions as well requires
711 * the user to re-select the tool after i.e. moving a layer. While testing I found
712 * that I switch layers and actions at the same time and it was annoying to mind the
713 * order. This way it works as visual clue for new users */
714 for (Enumeration<AbstractButton> e = Main.map.toolGroup.getElements() ; e.hasMoreElements() ;) {
715 AbstractButton x=e.nextElement();
716 x.setEnabled(((MapMode)x.getAction()).layerIsSupported(layer));
717 }
718 AudioPlayer.reset();
719 repaint();
720 }
721
722 /**
723 * Replies the currently active layer
724 *
725 * @return the currently active layer (may be null)
726 */
727 public Layer getActiveLayer() {
728 return activeLayer;
729 }
730
731 /**
732 * Replies the current edit layer, if any
733 *
734 * @return the current edit layer. May be null.
735 */
736 public OsmDataLayer getEditLayer() {
737 return editLayer;
738 }
739
740 /**
741 * replies true if the list of layers managed by this map view contain layer
742 *
743 * @param layer the layer
744 * @return true if the list of layers managed by this map view contain layer
745 */
746 public boolean hasLayer(Layer layer) {
747 return layers.contains(layer);
748 }
749
750 /**
751 * Tries to zoom to the download boundingbox[es] of the current edit layer
752 * (aka {@link OsmDataLayer}). If the edit layer has multiple download bounding
753 * boxes it zooms to a large virtual bounding box containing all smaller ones.
754 *
755 * @return <code>true</code> if a zoom operation has been performed
756 */
757 public boolean zoomToDataSetBoundingBox(DataSet ds) {
758 // In case we already have an existing data layer ...
759 OsmDataLayer layer= getEditLayer();
760 if (layer == null)
761 return false;
762 Collection<DataSource> dataSources = ds.dataSources;
763 // ... with bounding box[es] of data loaded from OSM or a file...
764 BoundingXYVisitor bbox = new BoundingXYVisitor();
765 for (DataSource source : dataSources) {
766 bbox.visit(source.bounds);
767 }
768 if (bbox.hasExtend()) {
769 // ... we zoom to it's bounding box
770 recalculateCenterScale(bbox);
771 return true;
772 }
773 return false;
774 }
775
776 public boolean addTemporaryLayer(MapViewPaintable mvp) {
777 if (temporaryLayers.contains(mvp)) return false;
778 return temporaryLayers.add(mvp);
779 }
780
781 public boolean removeTemporaryLayer(MapViewPaintable mvp) {
782 return temporaryLayers.remove(mvp);
783 }
784
785 public void propertyChange(PropertyChangeEvent evt) {
786 if (evt.getPropertyName().equals(Layer.VISIBLE_PROP)) {
787 repaint();
788 } else if (evt.getPropertyName().equals(OsmDataLayer.REQUIRES_SAVE_TO_DISK_PROP)
789 || evt.getPropertyName().equals(OsmDataLayer.REQUIRES_UPLOAD_TO_SERVER_PROP)) {
790 OsmDataLayer layer = (OsmDataLayer)evt.getSource();
791 if (layer == getEditLayer()) {
792 refreshTitle();
793 }
794 }
795 }
796
797 protected void refreshTitle() {
798 boolean dirty = editLayer != null && (editLayer.requiresSaveToFile() || editLayer.requiresUploadToServer());
799 if (dirty) {
800 JOptionPane.getFrameForComponent(Main.parent).setTitle("* " + tr("Java OpenStreetMap Editor"));
801 } else {
802 JOptionPane.getFrameForComponent(Main.parent).setTitle(tr("Java OpenStreetMap Editor"));
803 }
804 }
805
806 public void preferenceChanged(PreferenceChangeEvent e) {
807 paintPreferencesChanged = true;
808 }
809
810}
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