source: josm/trunk/src/org/openstreetmap/josm/gui/MapView.java@ 2107

Last change on this file since 2107 was 2107, checked in by stoecker, 15 years ago

close #3313 - patch by xeen - fix display problems with OpenJDK (hopefully)
  • Property svn:eol-style set to native
File size: 21.1 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;
28
29import javax.swing.AbstractButton;
30import javax.swing.JComponent;
31import javax.swing.JOptionPane;
32
33import org.openstreetmap.josm.Main;
34import org.openstreetmap.josm.actions.AutoScaleAction;
35import org.openstreetmap.josm.actions.JosmAction;
36import org.openstreetmap.josm.actions.MoveAction;
37import org.openstreetmap.josm.actions.mapmode.MapMode;
38import org.openstreetmap.josm.data.Bounds;
39import org.openstreetmap.josm.data.SelectionChangedListener;
40import org.openstreetmap.josm.data.coor.LatLon;
41import org.openstreetmap.josm.data.osm.DataSet;
42import org.openstreetmap.josm.data.osm.DataSource;
43import org.openstreetmap.josm.data.osm.OsmPrimitive;
44import org.openstreetmap.josm.data.osm.visitor.BoundingXYVisitor;
45import org.openstreetmap.josm.gui.layer.Layer;
46import org.openstreetmap.josm.gui.layer.MapViewPaintable;
47import org.openstreetmap.josm.gui.layer.OsmDataLayer;
48import org.openstreetmap.josm.gui.layer.markerlayer.MarkerLayer;
49import org.openstreetmap.josm.gui.layer.markerlayer.PlayHeadMarker;
50import org.openstreetmap.josm.tools.AudioPlayer;
51
52/**
53 * This is a component used in the MapFrame for browsing the map. It use is to
54 * provide the MapMode's enough capabilities to operate.
55 *
56 * MapView hold meta-data about the data set currently displayed, as scale level,
57 * center point viewed, what scrolling mode or editing mode is selected or with
58 * what projection the map is viewed etc..
59 *
60 * MapView is able to administrate several layers.
61 *
62 * @author imi
63 */
64public class MapView extends NavigatableComponent implements PropertyChangeListener {
65
66
67 /**
68 * A list of all layers currently loaded.
69 */
70 private ArrayList<Layer> layers = new ArrayList<Layer>();
71 /**
72 * The play head marker: there is only one of these so it isn't in any specific layer
73 */
74 public PlayHeadMarker playHeadMarker = null;
75
76 /**
77 * The layer from the layers list that is currently active.
78 */
79 private Layer activeLayer;
80
81 /**
82 * The last event performed by mouse.
83 */
84 public MouseEvent lastMEvent;
85
86 private LinkedList<MapViewPaintable> temporaryLayers = new LinkedList<MapViewPaintable>();
87
88 private BufferedImage offscreenBuffer;
89
90 public MapView() {
91 addComponentListener(new ComponentAdapter(){
92 @Override public void componentResized(ComponentEvent e) {
93 removeComponentListener(this);
94
95 MapSlider zoomSlider = new MapSlider(MapView.this);
96 add(zoomSlider);
97 zoomSlider.setBounds(3, 0, 114, 30);
98
99 MapScaler scaler = new MapScaler(MapView.this);
100 add(scaler);
101 scaler.setLocation(10,30);
102
103 if (!zoomToEditLayerBoundingBox()) {
104 new AutoScaleAction("data").actionPerformed(null);
105 }
106
107 new MapMover(MapView.this, Main.contentPane);
108 JosmAction mv;
109 mv = new MoveAction(MoveAction.Direction.UP);
110 if (mv.getShortcut() != null) {
111 Main.contentPane.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(mv.getShortcut().getKeyStroke(), "UP");
112 Main.contentPane.getActionMap().put("UP", mv);
113 }
114 mv = new MoveAction(MoveAction.Direction.DOWN);
115 if (mv.getShortcut() != null) {
116 Main.contentPane.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(mv.getShortcut().getKeyStroke(), "DOWN");
117 Main.contentPane.getActionMap().put("DOWN", mv);
118 }
119 mv = new MoveAction(MoveAction.Direction.LEFT);
120 if (mv.getShortcut() != null) {
121 Main.contentPane.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(mv.getShortcut().getKeyStroke(), "LEFT");
122 Main.contentPane.getActionMap().put("LEFT", mv);
123 }
124 mv = new MoveAction(MoveAction.Direction.RIGHT);
125 if (mv.getShortcut() != null) {
126 Main.contentPane.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(mv.getShortcut().getKeyStroke(), "RIGHT");
127 Main.contentPane.getActionMap().put("RIGHT", mv);
128 }
129 }
130 });
131
132 // listend to selection changes to redraw the map
133 DataSet.selListeners.add(new SelectionChangedListener(){
134 public void selectionChanged(Collection<? extends OsmPrimitive> newSelection) {
135 repaint();
136 }
137 });
138
139 //store the last mouse action
140 this.addMouseMotionListener(new MouseMotionListener() {
141 public void mouseDragged(MouseEvent e) {
142 mouseMoved(e);
143 }
144 public void mouseMoved(MouseEvent e) {
145 lastMEvent = e;
146 }
147 });
148 }
149
150 /**
151 * Add a layer to the current MapView. The layer will be added at topmost
152 * position.
153 */
154 public void addLayer(Layer layer) {
155 if (layer instanceof MarkerLayer && playHeadMarker == null) {
156 playHeadMarker = PlayHeadMarker.create();
157 }
158 int pos = layers.size();
159 while(pos > 0 && layers.get(pos-1).background) {
160 --pos;
161 }
162 layers.add(pos, layer);
163
164 for (Layer.LayerChangeListener l : Layer.listeners) {
165 l.layerAdded(layer);
166 }
167 if (layer instanceof OsmDataLayer || activeLayer == null) {
168 // autoselect the new layer
169 Layer old = activeLayer;
170 setActiveLayer(layer);
171 for (Layer.LayerChangeListener l : Layer.listeners) {
172 l.activeLayerChange(old, layer);
173 }
174 }
175 layer.addPropertyChangeListener(this);
176 AudioPlayer.reset();
177 repaint();
178 }
179
180 @Override
181 protected DataSet getCurrentDataSet() {
182 if(activeLayer != null && activeLayer instanceof OsmDataLayer)
183 return ((OsmDataLayer)activeLayer).data;
184 return null;
185 }
186
187 /**
188 * Replies true if the active layer is drawable.
189 *
190 * @return true if the active layer is drawable, false otherwise
191 */
192 public boolean isActiveLayerDrawable() {
193 return activeLayer != null && activeLayer instanceof OsmDataLayer;
194 }
195
196 /**
197 * Replies true if the active layer is visible.
198 *
199 * @return true if the active layer is visible, false otherwise
200 */
201 public boolean isActiveLayerVisible() {
202 return isActiveLayerDrawable() && activeLayer.isVisible();
203 }
204
205 protected void fireActiveLayerChanged(Layer oldLayer, Layer newLayer) {
206 for (Layer.LayerChangeListener l : Layer.listeners) {
207 l.activeLayerChange(oldLayer, newLayer);
208 }
209 }
210
211 /**
212 * Determines the next active data layer according to the following
213 * rules:
214 * <ul>
215 * <li>if there is at least one {@see OsmDataLayer} the first one
216 * becomes active</li>
217 * <li>otherwise, the top most layer of any type becomes active</li>
218 * </ul>
219 *
220 * @return the next active data layer
221 */
222 protected Layer determineNextActiveLayer() {
223 if (layers.isEmpty()) return null;
224 // if possible, activate the first data layer
225 //
226 List<OsmDataLayer> dataLayers = getLayersOfType(OsmDataLayer.class);
227 if (!dataLayers.isEmpty())
228 return dataLayers.get(0);
229
230 // else the first layer of any type
231 //
232 return layers.get(0);
233 }
234
235 /**
236 * Remove the layer from the mapview. If the layer was in the list before,
237 * an LayerChange event is fired.
238 */
239 public void removeLayer(Layer layer) {
240 boolean deletedLayerWasActiveLayer = false;
241
242 if (layer == activeLayer) {
243 activeLayer = null;
244 deletedLayerWasActiveLayer = true;
245 fireActiveLayerChanged(layer, null);
246 }
247 if (layers.remove(layer)) {
248 for (Layer.LayerChangeListener l : Layer.listeners) {
249 l.layerRemoved(layer);
250 }
251 }
252 layer.removePropertyChangeListener(this);
253 layer.destroy();
254 AudioPlayer.reset();
255 if (deletedLayerWasActiveLayer) {
256 Layer l = determineNextActiveLayer();
257 if (l != null) {
258 activeLayer = l;
259 fireActiveLayerChanged(null, l);
260 }
261 }
262 repaint();
263 }
264
265 private boolean virtualNodesEnabled = false;
266 public void setVirtualNodesEnabled(boolean enabled) {
267 if(virtualNodesEnabled != enabled) {
268 virtualNodesEnabled = enabled;
269 repaint();
270 }
271 }
272 public boolean isVirtualNodesEnabled() {
273 return virtualNodesEnabled;
274 }
275
276 /**
277 * Moves the layer to the given new position. No event is fired, but repaints
278 * according to the new Z-Order of the layers.
279 *
280 * @param layer The layer to move
281 * @param pos The new position of the layer
282 */
283 public void moveLayer(Layer layer, int pos) {
284 int curLayerPos = layers.indexOf(layer);
285 if (curLayerPos == -1)
286 throw new IllegalArgumentException(tr("layer not in list."));
287 if (pos == curLayerPos)
288 return; // already in place.
289 layers.remove(curLayerPos);
290 if (pos >= layers.size()) {
291 layers.add(layer);
292 } else {
293 layers.add(pos, layer);
294 }
295 AudioPlayer.reset();
296 repaint();
297 }
298
299
300 public int getLayerPos(Layer layer) {
301 int curLayerPos = layers.indexOf(layer);
302 if (curLayerPos == -1)
303 throw new IllegalArgumentException(tr("layer not in list."));
304 return curLayerPos;
305 }
306
307 /**
308 * Creates a list of the visible layers in Z-Order, the layer with the lowest Z-Order
309 * first, layer with the highest Z-Order last.
310 *
311 * @return a list of the visible in Z-Order, the layer with the lowest Z-Order
312 * first, layer with the highest Z-Order last.
313 */
314 protected List<Layer> getVisibleLayersInZOrder() {
315 ArrayList<Layer> ret = new ArrayList<Layer>();
316 for (Layer l: layers) {
317 if (l.isVisible()) {
318 ret.add(l);
319 }
320 }
321 // sort according to position in the list of layers, with one exception:
322 // an active data layer always becomes a higher Z-Order than all other
323 // data layers
324 //
325 Collections.sort(
326 ret,
327 new Comparator<Layer>() {
328 public int compare(Layer l1, Layer l2) {
329 if (l1 instanceof OsmDataLayer && l2 instanceof OsmDataLayer) {
330 if (l1 == getActiveLayer()) return -1;
331 if (l2 == getActiveLayer()) return 1;
332 return new Integer(layers.indexOf(l1)).compareTo(layers.indexOf(l2));
333 } else
334 return new Integer(layers.indexOf(l1)).compareTo(layers.indexOf(l2));
335 }
336 }
337 );
338 Collections.reverse(ret);
339 return ret;
340 }
341
342 /**
343 * Draw the component.
344 */
345 @Override public void paint(Graphics g) {
346 if (center == null)
347 return; // no data loaded yet.
348
349 // re-create offscreen-buffer if we've been resized, otherwise
350 // just re-use it.
351 if (null == offscreenBuffer || offscreenBuffer.getWidth() != getWidth()
352 || offscreenBuffer.getHeight() != getHeight()) {
353 offscreenBuffer = new BufferedImage(getWidth(), getHeight(),
354 BufferedImage.TYPE_INT_ARGB);
355 }
356
357 Graphics2D tempG = offscreenBuffer.createGraphics();
358 tempG.setColor(Main.pref.getColor("background", Color.BLACK));
359 tempG.fillRect(0, 0, getWidth(), getHeight());
360
361 for (Layer l: getVisibleLayersInZOrder()) {
362 l.paint(tempG, this);
363 }
364 for (MapViewPaintable mvp : temporaryLayers) {
365 mvp.paint(tempG, this);
366 }
367
368 // draw world borders
369 tempG.setColor(Color.WHITE);
370 Bounds b = getProjection().getWorldBoundsLatLon();
371 double lat = b.min.lat();
372 double lon = b.min.lon();
373
374 Point p = getPoint(b.min);
375
376 GeneralPath path = new GeneralPath();
377
378 path.moveTo(p.x, p.y);
379 double max = b.max.lat();
380 for(; lat <= max; lat += 1.0)
381 {
382 p = getPoint(new LatLon(lat >= max ? max : lat, lon));
383 path.lineTo(p.x, p.y);
384 }
385 lat = max; max = b.max.lon();
386 for(; lon <= max; lon += 1.0)
387 {
388 p = getPoint(new LatLon(lat, lon >= max ? max : lon));
389 path.lineTo(p.x, p.y);
390 }
391 lon = max; max = b.min.lat();
392 for(; lat >= max; lat -= 1.0)
393 {
394 p = getPoint(new LatLon(lat <= max ? max : lat, lon));
395 path.lineTo(p.x, p.y);
396 }
397 lat = max; max = b.min.lon();
398 for(; lon >= max; lon -= 1.0)
399 {
400 p = getPoint(new LatLon(lat, lon <= max ? max : lon));
401 path.lineTo(p.x, p.y);
402 }
403
404 int w = offscreenBuffer.getWidth();
405 int h = offscreenBuffer.getHeight();
406
407 // Work around OpenJDK having problems when drawing out of bounds
408 final Area border = new Area(path);
409 // Make the viewport 1px larger in every direction to prevent an
410 // additional 1px border when zooming in
411 final Area viewport = new Area(new Rectangle(-1, -1, w + 2, h + 2));
412 border.intersect(viewport);
413 tempG.draw(border);
414
415 if (playHeadMarker != null) {
416 playHeadMarker.paint(tempG, this);
417 }
418
419 g.drawImage(offscreenBuffer, 0, 0, null);
420 super.paint(g);
421 }
422
423 /**
424 * Set the new dimension to the view.
425 */
426 public void recalculateCenterScale(BoundingXYVisitor box) {
427 if (box == null) {
428 box = new BoundingXYVisitor();
429 }
430 if (box.getBounds() == null) {
431 box.visit(getProjection().getWorldBoundsLatLon());
432 }
433 if (!box.hasExtend()) {
434 box.enlargeBoundingBox();
435 }
436
437 zoomTo(box.getBounds());
438 }
439
440 /**
441 * @return An unmodifiable collection of all layers
442 */
443 public Collection<Layer> getAllLayers() {
444 return Collections.unmodifiableCollection(layers);
445 }
446
447 /**
448 * @return An unmodifiable ordered list of all layers
449 */
450 public List<Layer> getAllLayersAsList() {
451 return Collections.unmodifiableList(layers);
452 }
453
454 /**
455 * Replies an unmodifiable list of layers of a certain type.
456 *
457 * Example:
458 * <pre>
459 * List<WMSLayer> wmsLayers = getLayersOfType(WMSLayer.class);
460 * </pre>
461 *
462 * @return an unmodifiable list of layers of a certain type.
463 */
464 public <T> List<T> getLayersOfType(Class<T> ofType) {
465 ArrayList<T> ret = new ArrayList<T>();
466 for (Layer layer : getAllLayersAsList()) {
467 if (ofType.isInstance(layer)) {
468 ret.add(ofType.cast(layer));
469 }
470 }
471 return ret;
472 }
473
474 /**
475 * Replies the number of layers managed by this mav view
476 *
477 * @return the number of layers managed by this mav view
478 */
479 public int getNumLayers() {
480 return layers.size();
481 }
482
483 /**
484 * Replies true if there is at least one layer in this map view
485 *
486 * @return true if there is at least one layer in this map view
487 */
488 public boolean hasLayers() {
489 return getNumLayers() > 0;
490 }
491
492 /**
493 * Sets the active layer to <code>layer</code>. If <code>layer</code> is an instance
494 * of {@see OsmDataLayer} also sets {@see #editLayer} to <code>layer</code>.
495 *
496 * @param layer the layer to be activate; must be one of the layers in the list of layers
497 * @exception IllegalArgumentException thrown if layer is not in the lis of layers
498 */
499 public void setActiveLayer(Layer layer) {
500 if (!layers.contains(layer))
501 throw new IllegalArgumentException(tr("Layer ''{0}'' must be in list of layers", layer.toString()));
502 if (! (layer instanceof OsmDataLayer)) {
503 if (getCurrentDataSet() != null) {
504 getCurrentDataSet().setSelected();
505 DataSet.fireSelectionChanged(getCurrentDataSet().getSelected());
506 }
507 }
508 Layer old = activeLayer;
509 activeLayer = layer;
510 if (old != layer) {
511 for (Layer.LayerChangeListener l : Layer.listeners) {
512 l.activeLayerChange(old, layer);
513 }
514 }
515 if (layer instanceof OsmDataLayer) {
516 refreshTitle((OsmDataLayer)layer);
517 }
518
519 /* This only makes the buttons look disabled. Disabling the actions as well requires
520 * the user to re-select the tool after i.e. moving a layer. While testing I found
521 * that I switch layers and actions at the same time and it was annoying to mind the
522 * order. This way it works as visual clue for new users */
523 for (Enumeration<AbstractButton> e = Main.map.toolGroup.getElements() ; e.hasMoreElements() ;) {
524 AbstractButton x=e.nextElement();
525 x.setEnabled(((MapMode)x.getAction()).layerIsSupported(layer));
526 }
527 AudioPlayer.reset();
528 repaint();
529 }
530
531 /**
532 * Replies the currently active layer
533 *
534 * @return the currently active layer (may be null)
535 */
536 public Layer getActiveLayer() {
537 return activeLayer;
538 }
539
540 /**
541 * Replies the current edit layer, if any
542 *
543 * @return the current edit layer. May be null.
544 */
545 public OsmDataLayer getEditLayer() {
546 if (activeLayer instanceof OsmDataLayer)
547 return (OsmDataLayer)activeLayer;
548
549 // the first OsmDataLayer is the edit layer
550 //
551 for (Layer layer : layers) {
552 if (layer instanceof OsmDataLayer)
553 return (OsmDataLayer)layer;
554 }
555 return null;
556 }
557
558 /**
559 * replies true if the list of layers managed by this map view contain layer
560 *
561 * @param layer the layer
562 * @return true if the list of layers managed by this map view contain layer
563 */
564 public boolean hasLayer(Layer layer) {
565 return layers.contains(layer);
566 }
567
568 /**
569 * Tries to zoom to the download boundingbox[es] of the current edit layer
570 * (aka {@link OsmDataLayer}). If the edit layer has multiple download bounding
571 * boxes it zooms to a large virtual bounding box containing all smaller ones.
572 * This implementation can be used for resolving ticket #1461.
573 *
574 * @return <code>true</code> if a zoom operation has been performed
575 */
576 public boolean zoomToEditLayerBoundingBox() {
577 // workaround for #1461 (zoom to download bounding box instead of all data)
578 // In case we already have an existing data layer ...
579 OsmDataLayer layer= getEditLayer();
580 if (layer == null)
581 return false;
582 Collection<DataSource> dataSources = layer.data.dataSources;
583 // ... with bounding box[es] of data loaded from OSM or a file...
584 BoundingXYVisitor bbox = new BoundingXYVisitor();
585 for (DataSource ds : dataSources) {
586 bbox.visit(ds.bounds);
587 if (bbox.hasExtend()) {
588 // ... we zoom to it's bounding box
589 recalculateCenterScale(bbox);
590 return true;
591 }
592 }
593 return false;
594 }
595
596 public boolean addTemporaryLayer(MapViewPaintable mvp) {
597 if (temporaryLayers.contains(mvp)) return false;
598 return temporaryLayers.add(mvp);
599 }
600
601 public boolean removeTemporaryLayer(MapViewPaintable mvp) {
602 return temporaryLayers.remove(mvp);
603 }
604
605 public void propertyChange(PropertyChangeEvent evt) {
606 if (evt.getPropertyName().equals(Layer.VISIBLE_PROP)) {
607 repaint();
608 } else if (evt.getPropertyName().equals(OsmDataLayer.REQUIRES_SAVE_TO_DISK_PROP)
609 || evt.getPropertyName().equals(OsmDataLayer.REQUIRES_UPLOAD_TO_SERVER_PROP)) {
610 OsmDataLayer layer = (OsmDataLayer)evt.getSource();
611 if (layer == getEditLayer()) {
612 refreshTitle(layer);
613 }
614 }
615 }
616
617 protected void refreshTitle(OsmDataLayer layer) {
618 boolean dirty = layer.requiresSaveToFile() || layer.requiresUploadToServer();
619 if (dirty) {
620 JOptionPane.getFrameForComponent(Main.parent).setTitle("* " + tr("Java OpenStreetMap Editor"));
621 } else {
622 JOptionPane.getFrameForComponent(Main.parent).setTitle(tr("Java OpenStreetMap Editor"));
623 }
624 }
625}
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