source: josm/trunk/src/org/openstreetmap/josm/gui/MapView.java@ 11807

Last change on this file since 11807 was 11807, checked in by Don-vip, 7 years ago

fix PMD violations
  • Property svn:eol-style set to native
File size: 32.8 KB
Line 
1// License: GPL. For details, see LICENSE file.
2package org.openstreetmap.josm.gui;
3
4import java.awt.AlphaComposite;
5import java.awt.Color;
6import java.awt.Dimension;
7import java.awt.Graphics;
8import java.awt.Graphics2D;
9import java.awt.Point;
10import java.awt.Rectangle;
11import java.awt.event.ComponentAdapter;
12import java.awt.event.ComponentEvent;
13import java.awt.event.KeyEvent;
14import java.awt.event.MouseAdapter;
15import java.awt.event.MouseEvent;
16import java.awt.event.MouseMotionListener;
17import java.awt.geom.Area;
18import java.awt.image.BufferedImage;
19import java.beans.PropertyChangeEvent;
20import java.beans.PropertyChangeListener;
21import java.util.ArrayList;
22import java.util.Arrays;
23import java.util.Collections;
24import java.util.HashMap;
25import java.util.IdentityHashMap;
26import java.util.LinkedHashSet;
27import java.util.List;
28import java.util.Set;
29import java.util.TreeSet;
30import java.util.concurrent.CopyOnWriteArrayList;
31import java.util.concurrent.atomic.AtomicBoolean;
32
33import javax.swing.AbstractButton;
34import javax.swing.JComponent;
35import javax.swing.JPanel;
36
37import org.openstreetmap.josm.Main;
38import org.openstreetmap.josm.actions.mapmode.MapMode;
39import org.openstreetmap.josm.data.Bounds;
40import org.openstreetmap.josm.data.Preferences.PreferenceChangeEvent;
41import org.openstreetmap.josm.data.Preferences.PreferenceChangedListener;
42import org.openstreetmap.josm.data.ProjectionBounds;
43import org.openstreetmap.josm.data.SelectionChangedListener;
44import org.openstreetmap.josm.data.ViewportData;
45import org.openstreetmap.josm.data.coor.EastNorth;
46import org.openstreetmap.josm.data.imagery.ImageryInfo;
47import org.openstreetmap.josm.data.osm.DataSet;
48import org.openstreetmap.josm.data.osm.visitor.paint.PaintColors;
49import org.openstreetmap.josm.data.osm.visitor.paint.Rendering;
50import org.openstreetmap.josm.data.osm.visitor.paint.relations.MultipolygonCache;
51import org.openstreetmap.josm.gui.MapViewState.MapViewRectangle;
52import org.openstreetmap.josm.gui.datatransfer.OsmTransferHandler;
53import org.openstreetmap.josm.gui.layer.AbstractMapViewPaintable;
54import org.openstreetmap.josm.gui.layer.GpxLayer;
55import org.openstreetmap.josm.gui.layer.ImageryLayer;
56import org.openstreetmap.josm.gui.layer.Layer;
57import org.openstreetmap.josm.gui.layer.LayerManager;
58import org.openstreetmap.josm.gui.layer.LayerManager.LayerAddEvent;
59import org.openstreetmap.josm.gui.layer.LayerManager.LayerOrderChangeEvent;
60import org.openstreetmap.josm.gui.layer.LayerManager.LayerRemoveEvent;
61import org.openstreetmap.josm.gui.layer.MainLayerManager;
62import org.openstreetmap.josm.gui.layer.MainLayerManager.ActiveLayerChangeEvent;
63import org.openstreetmap.josm.gui.layer.MapViewGraphics;
64import org.openstreetmap.josm.gui.layer.MapViewPaintable;
65import org.openstreetmap.josm.gui.layer.MapViewPaintable.LayerPainter;
66import org.openstreetmap.josm.gui.layer.MapViewPaintable.MapViewEvent;
67import org.openstreetmap.josm.gui.layer.MapViewPaintable.PaintableInvalidationEvent;
68import org.openstreetmap.josm.gui.layer.MapViewPaintable.PaintableInvalidationListener;
69import org.openstreetmap.josm.gui.layer.OsmDataLayer;
70import org.openstreetmap.josm.gui.layer.geoimage.GeoImageLayer;
71import org.openstreetmap.josm.gui.layer.markerlayer.PlayHeadMarker;
72import org.openstreetmap.josm.tools.AudioPlayer;
73import org.openstreetmap.josm.tools.JosmRuntimeException;
74import org.openstreetmap.josm.tools.Shortcut;
75import org.openstreetmap.josm.tools.Utils;
76import org.openstreetmap.josm.tools.bugreport.BugReport;
77
78/**
79 * This is a component used in the {@link MapFrame} for browsing the map. It use is to
80 * provide the MapMode's enough capabilities to operate.<br><br>
81 *
82 * {@code MapView} holds meta-data about the data set currently displayed, as scale level,
83 * center point viewed, what scrolling mode or editing mode is selected or with
84 * what projection the map is viewed etc..<br><br>
85 *
86 * {@code MapView} is able to administrate several layers.
87 *
88 * @author imi
89 */
90public class MapView extends NavigatableComponent
91implements PropertyChangeListener, PreferenceChangedListener,
92LayerManager.LayerChangeListener, MainLayerManager.ActiveLayerChangeListener {
93
94 /**
95 * An invalidation listener that simply calls repaint() for now.
96 * @author Michael Zangl
97 * @since 10271
98 */
99 private class LayerInvalidatedListener implements PaintableInvalidationListener {
100 private boolean ignoreRepaint;
101
102 private final Set<MapViewPaintable> invalidatedLayers = Collections.newSetFromMap(new IdentityHashMap<MapViewPaintable, Boolean>());
103
104 @Override
105 public void paintableInvalidated(PaintableInvalidationEvent event) {
106 invalidate(event.getLayer());
107 }
108
109 /**
110 * Invalidate contents and repaint map view
111 * @param mapViewPaintable invalidated layer
112 */
113 public synchronized void invalidate(MapViewPaintable mapViewPaintable) {
114 ignoreRepaint = true;
115 invalidatedLayers.add(mapViewPaintable);
116 repaint();
117 }
118
119 /**
120 * Temporary until all {@link MapViewPaintable}s support this.
121 * @param p The paintable.
122 */
123 public synchronized void addTo(MapViewPaintable p) {
124 if (p instanceof AbstractMapViewPaintable) {
125 ((AbstractMapViewPaintable) p).addInvalidationListener(this);
126 }
127 }
128
129 /**
130 * Temporary until all {@link MapViewPaintable}s support this.
131 * @param p The paintable.
132 */
133 public synchronized void removeFrom(MapViewPaintable p) {
134 if (p instanceof AbstractMapViewPaintable) {
135 ((AbstractMapViewPaintable) p).removeInvalidationListener(this);
136 }
137 invalidatedLayers.remove(p);
138 }
139
140 /**
141 * Attempts to trace repaints that did not originate from this listener. Good to find missed {@link MapView#repaint()}s in code.
142 */
143 protected synchronized void traceRandomRepaint() {
144 if (!ignoreRepaint) {
145 System.err.println("Repaint:");
146 Thread.dumpStack();
147 }
148 ignoreRepaint = false;
149 }
150
151 /**
152 * Retrieves a set of all layers that have been marked as invalid since the last call to this method.
153 * @return The layers
154 */
155 protected synchronized Set<MapViewPaintable> collectInvalidatedLayers() {
156 Set<MapViewPaintable> layers = Collections.newSetFromMap(new IdentityHashMap<MapViewPaintable, Boolean>());
157 layers.addAll(invalidatedLayers);
158 invalidatedLayers.clear();
159 return layers;
160 }
161 }
162
163 /**
164 * A layer painter that issues a warning when being called.
165 * @author Michael Zangl
166 * @since 10474
167 */
168 private static class WarningLayerPainter implements LayerPainter {
169 boolean warningPrinted;
170 private final Layer layer;
171
172 WarningLayerPainter(Layer layer) {
173 this.layer = layer;
174 }
175
176 @Override
177 public void paint(MapViewGraphics graphics) {
178 if (!warningPrinted) {
179 Main.debug("A layer triggered a repaint while being added: " + layer);
180 warningPrinted = true;
181 }
182 }
183
184 @Override
185 public void detachFromMapView(MapViewEvent event) {
186 // ignored
187 }
188 }
189
190 public boolean viewportFollowing;
191
192 /**
193 * A list of all layers currently loaded. If we support multiple map views, this list may be different for each of them.
194 */
195 private final MainLayerManager layerManager;
196
197 /**
198 * The play head marker: there is only one of these so it isn't in any specific layer
199 */
200 public transient PlayHeadMarker playHeadMarker;
201
202 /**
203 * The last event performed by mouse.
204 */
205 public MouseEvent lastMEvent = new MouseEvent(this, 0, 0, 0, 0, 0, 0, false); // In case somebody reads it before first mouse move
206
207 /**
208 * Temporary layers (selection rectangle, etc.) that are never cached and
209 * drawn on top of regular layers.
210 * Access must be synchronized.
211 */
212 private final transient Set<MapViewPaintable> temporaryLayers = new LinkedHashSet<>();
213
214 private transient BufferedImage nonChangedLayersBuffer;
215 private transient BufferedImage offscreenBuffer;
216 // Layers that wasn't changed since last paint
217 private final transient List<Layer> nonChangedLayers = new ArrayList<>();
218 private int lastViewID;
219 private final AtomicBoolean paintPreferencesChanged = new AtomicBoolean(true);
220 private Rectangle lastClipBounds = new Rectangle();
221 private transient MapMover mapMover;
222
223 /**
224 * The listener that listens to invalidations of all layers.
225 */
226 private final LayerInvalidatedListener invalidatedListener = new LayerInvalidatedListener();
227
228 /**
229 * This is a map of all Layers that have been added to this view.
230 */
231 private final HashMap<Layer, LayerPainter> registeredLayers = new HashMap<>();
232
233 /**
234 * Constructs a new {@code MapView}.
235 * @param layerManager The layers to display.
236 * @param contentPane Ignored. Main content pane is used.
237 * @param viewportData the initial viewport of the map. Can be null, then
238 * the viewport is derived from the layer data.
239 * @since 10279
240 * @deprecated use {@link #MapView(MainLayerManager, ViewportData)} instead
241 */
242 @Deprecated
243 public MapView(MainLayerManager layerManager, final JPanel contentPane, final ViewportData viewportData) {
244 this(layerManager, viewportData);
245 }
246
247 /**
248 * Constructs a new {@code MapView}.
249 * @param layerManager The layers to display.
250 * @param viewportData the initial viewport of the map. Can be null, then
251 * the viewport is derived from the layer data.
252 * @since 11713
253 */
254 public MapView(MainLayerManager layerManager, final ViewportData viewportData) {
255 this.layerManager = layerManager;
256 initialViewport = viewportData;
257 layerManager.addLayerChangeListener(this, true);
258 layerManager.addActiveLayerChangeListener(this);
259 Main.pref.addPreferenceChangeListener(this);
260
261 addComponentListener(new ComponentAdapter() {
262 @Override
263 public void componentResized(ComponentEvent e) {
264 removeComponentListener(this);
265 mapMover = new MapMover(MapView.this);
266 }
267 });
268
269 // listens to selection changes to redraw the map
270 DataSet.addSelectionListener(repaintSelectionChangedListener);
271
272 //store the last mouse action
273 this.addMouseMotionListener(new MouseMotionListener() {
274 @Override
275 public void mouseDragged(MouseEvent e) {
276 mouseMoved(e);
277 }
278
279 @Override
280 public void mouseMoved(MouseEvent e) {
281 lastMEvent = e;
282 }
283 });
284 this.addMouseListener(new MouseAdapter() {
285 @Override
286 public void mousePressed(MouseEvent me) {
287 // focus the MapView component when mouse is pressed inside it
288 requestFocus();
289 }
290 });
291
292 setFocusTraversalKeysEnabled(!Shortcut.findShortcut(KeyEvent.VK_TAB, 0).isPresent());
293
294 for (JComponent c : getMapNavigationComponents(this)) {
295 add(c);
296 }
297 setTransferHandler(new OsmTransferHandler());
298 }
299
300 /**
301 * Adds the map navigation components to a
302 * @param forMapView The map view to get the components for.
303 * @return A list containing the correctly positioned map navigation components.
304 */
305 public static List<? extends JComponent> getMapNavigationComponents(MapView forMapView) {
306 MapSlider zoomSlider = new MapSlider(forMapView);
307 Dimension size = zoomSlider.getPreferredSize();
308 zoomSlider.setSize(size);
309 zoomSlider.setLocation(3, 0);
310 zoomSlider.setFocusTraversalKeysEnabled(!Shortcut.findShortcut(KeyEvent.VK_TAB, 0).isPresent());
311
312 MapScaler scaler = new MapScaler(forMapView);
313 scaler.setPreferredLineLength(size.width - 10);
314 scaler.setSize(scaler.getPreferredSize());
315 scaler.setLocation(3, size.height);
316
317 return Arrays.asList(zoomSlider, scaler);
318 }
319
320 // remebered geometry of the component
321 private Dimension oldSize;
322 private Point oldLoc;
323
324 /**
325 * Call this method to keep map position on screen during next repaint
326 */
327 public void rememberLastPositionOnScreen() {
328 oldSize = getSize();
329 oldLoc = getLocationOnScreen();
330 }
331
332 @Override
333 public void layerAdded(LayerAddEvent e) {
334 try {
335 Layer layer = e.getAddedLayer();
336 registeredLayers.put(layer, new WarningLayerPainter(layer));
337 // Layers may trigger a redraw during this call if they open dialogs.
338 LayerPainter painter = layer.attachToMapView(new MapViewEvent(this, false));
339 if (!registeredLayers.containsKey(layer)) {
340 // The layer may have removed itself during attachToMapView()
341 Main.warn("Layer was removed during attachToMapView()");
342 } else {
343 registeredLayers.put(layer, painter);
344
345 if (e.isZoomRequired()) {
346 ProjectionBounds viewProjectionBounds = layer.getViewProjectionBounds();
347 if (viewProjectionBounds != null) {
348 scheduleZoomTo(new ViewportData(viewProjectionBounds));
349 }
350 }
351
352 layer.addPropertyChangeListener(this);
353 Main.addProjectionChangeListener(layer);
354 invalidatedListener.addTo(layer);
355 AudioPlayer.reset();
356
357 repaint();
358 }
359 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException t) {
360 throw BugReport.intercept(t).put("layer", e.getAddedLayer());
361 }
362 }
363
364 /**
365 * Replies true if the active data layer (edit layer) is drawable.
366 *
367 * @return true if the active data layer (edit layer) is drawable, false otherwise
368 */
369 public boolean isActiveLayerDrawable() {
370 return layerManager.getEditLayer() != null;
371 }
372
373 /**
374 * Replies true if the active data layer (edit layer) is visible.
375 *
376 * @return true if the active data layer (edit layer) is visible, false otherwise
377 */
378 public boolean isActiveLayerVisible() {
379 OsmDataLayer e = layerManager.getEditLayer();
380 return e != null && e.isVisible();
381 }
382
383 @Override
384 public void layerRemoving(LayerRemoveEvent e) {
385 Layer layer = e.getRemovedLayer();
386
387 LayerPainter painter = registeredLayers.remove(layer);
388 if (painter == null) {
389 Main.error("The painter for layer " + layer + " was not registered.");
390 return;
391 }
392 painter.detachFromMapView(new MapViewEvent(this, false));
393 Main.removeProjectionChangeListener(layer);
394 layer.removePropertyChangeListener(this);
395 invalidatedListener.removeFrom(layer);
396 layer.destroy();
397 AudioPlayer.reset();
398
399 repaint();
400 }
401
402 private boolean virtualNodesEnabled;
403
404 public void setVirtualNodesEnabled(boolean enabled) {
405 if (virtualNodesEnabled != enabled) {
406 virtualNodesEnabled = enabled;
407 repaint();
408 }
409 }
410
411 /**
412 * Checks if virtual nodes should be drawn. Default is <code>false</code>
413 * @return The virtual nodes property.
414 * @see Rendering#render(DataSet, boolean, Bounds)
415 */
416 public boolean isVirtualNodesEnabled() {
417 return virtualNodesEnabled;
418 }
419
420 /**
421 * Moves the layer to the given new position. No event is fired, but repaints
422 * according to the new Z-Order of the layers.
423 *
424 * @param layer The layer to move
425 * @param pos The new position of the layer
426 */
427 public void moveLayer(Layer layer, int pos) {
428 layerManager.moveLayer(layer, pos);
429 }
430
431 @Override
432 public void layerOrderChanged(LayerOrderChangeEvent e) {
433 AudioPlayer.reset();
434 repaint();
435 }
436
437 /**
438 * Paints the given layer to the graphics object, using the current state of this map view.
439 * @param layer The layer to draw.
440 * @param g A graphics object. It should have the width and height of this component
441 * @throws IllegalArgumentException If the layer is not part of this map view.
442 * @since 11226
443 */
444 public void paintLayer(Layer layer, Graphics2D g) {
445 try {
446 LayerPainter painter = registeredLayers.get(layer);
447 if (painter == null) {
448 throw new IllegalArgumentException("Cannot paint layer, it is not registered.");
449 }
450 MapViewRectangle clipBounds = getState().getViewArea(g.getClipBounds());
451 MapViewGraphics paintGraphics = new MapViewGraphics(this, g, clipBounds);
452
453 if (layer.getOpacity() < 1) {
454 g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, (float) layer.getOpacity()));
455 }
456 painter.paint(paintGraphics);
457 g.setPaintMode();
458 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException t) {
459 BugReport.intercept(t).put("layer", layer).warn();
460 }
461 }
462
463 /**
464 * Draw the component.
465 */
466 @Override
467 public void paint(Graphics g) {
468 try {
469 if (!prepareToDraw()) {
470 return;
471 }
472 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
473 BugReport.intercept(e).put("center", this::getCenter).warn();
474 return;
475 }
476
477 try {
478 drawMapContent(g);
479 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
480 throw BugReport.intercept(e).put("visibleLayers", layerManager::getVisibleLayersInZOrder)
481 .put("temporaryLayers", temporaryLayers);
482 }
483 super.paint(g);
484 }
485
486 private void drawMapContent(Graphics g) {
487 List<Layer> visibleLayers = layerManager.getVisibleLayersInZOrder();
488
489 int nonChangedLayersCount = 0;
490 Set<MapViewPaintable> invalidated = invalidatedListener.collectInvalidatedLayers();
491 for (Layer l: visibleLayers) {
492 // `isChanged` for backward compatibility, see https://josm.openstreetmap.de/ticket/13175#comment:7
493 // Layers that still implement it (plugins) will use it to tell the MapView that they have been changed.
494 // This is why the MapView still uses it in addition to the invalidation events.
495 if (l.isChanged() || invalidated.contains(l)) {
496 break;
497 } else {
498 nonChangedLayersCount++;
499 }
500 }
501
502 boolean canUseBuffer = !paintPreferencesChanged.getAndSet(false)
503 && nonChangedLayers.size() <= nonChangedLayersCount
504 && lastViewID == getViewID()
505 && lastClipBounds.contains(g.getClipBounds())
506 && nonChangedLayers.equals(visibleLayers.subList(0, nonChangedLayers.size()));
507
508 if (null == offscreenBuffer || offscreenBuffer.getWidth() != getWidth() || offscreenBuffer.getHeight() != getHeight()) {
509 offscreenBuffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_3BYTE_BGR);
510 }
511
512 Graphics2D tempG = offscreenBuffer.createGraphics();
513 tempG.setClip(g.getClip());
514
515 if (!canUseBuffer || nonChangedLayersBuffer == null) {
516 if (null == nonChangedLayersBuffer
517 || nonChangedLayersBuffer.getWidth() != getWidth() || nonChangedLayersBuffer.getHeight() != getHeight()) {
518 nonChangedLayersBuffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_3BYTE_BGR);
519 }
520 Graphics2D g2 = nonChangedLayersBuffer.createGraphics();
521 g2.setClip(g.getClip());
522 g2.setColor(PaintColors.getBackgroundColor());
523 g2.fillRect(0, 0, getWidth(), getHeight());
524
525 for (int i = 0; i < nonChangedLayersCount; i++) {
526 paintLayer(visibleLayers.get(i), g2);
527 }
528 } else {
529 // Maybe there were more unchanged layers then last time - draw them to buffer
530 if (nonChangedLayers.size() != nonChangedLayersCount) {
531 Graphics2D g2 = nonChangedLayersBuffer.createGraphics();
532 g2.setClip(g.getClip());
533 for (int i = nonChangedLayers.size(); i < nonChangedLayersCount; i++) {
534 paintLayer(visibleLayers.get(i), g2);
535 }
536 }
537 }
538
539 nonChangedLayers.clear();
540 nonChangedLayers.addAll(visibleLayers.subList(0, nonChangedLayersCount));
541 lastViewID = getViewID();
542 lastClipBounds = g.getClipBounds();
543
544 tempG.drawImage(nonChangedLayersBuffer, 0, 0, null);
545
546 for (int i = nonChangedLayersCount; i < visibleLayers.size(); i++) {
547 paintLayer(visibleLayers.get(i), tempG);
548 }
549
550 try {
551 drawTemporaryLayers(tempG, getLatLonBounds(g.getClipBounds()));
552 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
553 BugReport.intercept(e).put("temporaryLayers", temporaryLayers).warn();
554 }
555
556 // draw world borders
557 try {
558 drawWorldBorders(tempG);
559 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
560 // getProjection() needs to be inside lambda to catch errors.
561 BugReport.intercept(e).put("bounds", () -> getProjection().getWorldBoundsLatLon()).warn();
562 }
563
564 if (Main.isDisplayingMapView() && Main.map.filterDialog != null) {
565 Main.map.filterDialog.drawOSDText(tempG);
566 }
567
568 if (playHeadMarker != null) {
569 playHeadMarker.paint(tempG, this);
570 }
571
572 try {
573 g.drawImage(offscreenBuffer, 0, 0, null);
574 } catch (ClassCastException e) {
575 // See #11002 and duplicate tickets. On Linux with Java >= 8 Many users face this error here:
576 //
577 // java.lang.ClassCastException: sun.awt.image.BufImgSurfaceData cannot be cast to sun.java2d.xr.XRSurfaceData
578 // at sun.java2d.xr.XRPMBlitLoops.cacheToTmpSurface(XRPMBlitLoops.java:145)
579 // at sun.java2d.xr.XrSwToPMBlit.Blit(XRPMBlitLoops.java:353)
580 // at sun.java2d.pipe.DrawImage.blitSurfaceData(DrawImage.java:959)
581 // at sun.java2d.pipe.DrawImage.renderImageCopy(DrawImage.java:577)
582 // at sun.java2d.pipe.DrawImage.copyImage(DrawImage.java:67)
583 // at sun.java2d.pipe.DrawImage.copyImage(DrawImage.java:1014)
584 // at sun.java2d.pipe.ValidatePipe.copyImage(ValidatePipe.java:186)
585 // at sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:3318)
586 // at sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:3296)
587 // at org.openstreetmap.josm.gui.MapView.paint(MapView.java:834)
588 //
589 // It seems to be this JDK bug, but Oracle does not seem to be fixing it:
590 // https://bugs.openjdk.java.net/browse/JDK-7172749
591 //
592 // According to bug reports it can happen for a variety of reasons such as:
593 // - long period of time
594 // - change of screen resolution
595 // - addition/removal of a secondary monitor
596 //
597 // But the application seems to work fine after, so let's just log the error
598 Main.error(e);
599 }
600 }
601
602 private void drawTemporaryLayers(Graphics2D tempG, Bounds box) {
603 synchronized (temporaryLayers) {
604 for (MapViewPaintable mvp : temporaryLayers) {
605 try {
606 mvp.paint(tempG, this, box);
607 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
608 throw BugReport.intercept(e).put("mvp", mvp);
609 }
610 }
611 }
612 }
613
614 private void drawWorldBorders(Graphics2D tempG) {
615 tempG.setColor(Color.WHITE);
616 Bounds b = getProjection().getWorldBoundsLatLon();
617
618 int w = getWidth();
619 int h = getHeight();
620
621 // Work around OpenJDK having problems when drawing out of bounds
622 final Area border = getState().getArea(b);
623 // Make the viewport 1px larger in every direction to prevent an
624 // additional 1px border when zooming in
625 final Area viewport = new Area(new Rectangle(-1, -1, w + 2, h + 2));
626 border.intersect(viewport);
627 tempG.draw(border);
628 }
629
630 /**
631 * Sets up the viewport to prepare for drawing the view.
632 * @return <code>true</code> if the view can be drawn, <code>false</code> otherwise.
633 */
634 public boolean prepareToDraw() {
635 updateLocationState();
636 if (initialViewport != null) {
637 zoomTo(initialViewport);
638 initialViewport = null;
639 }
640
641 if (getCenter() == null)
642 return false; // no data loaded yet.
643
644 // if the position was remembered, we need to adjust center once before repainting
645 if (oldLoc != null && oldSize != null) {
646 Point l1 = getLocationOnScreen();
647 final EastNorth newCenter = new EastNorth(
648 getCenter().getX()+ (l1.x-oldLoc.x - (oldSize.width-getWidth())/2.0)*getScale(),
649 getCenter().getY()+ (oldLoc.y-l1.y + (oldSize.height-getHeight())/2.0)*getScale()
650 );
651 oldLoc = null; oldSize = null;
652 zoomTo(newCenter);
653 }
654
655 return true;
656 }
657
658 @Override
659 public void activeOrEditLayerChanged(ActiveLayerChangeEvent e) {
660 if (Main.map != null) {
661 /* This only makes the buttons look disabled. Disabling the actions as well requires
662 * the user to re-select the tool after i.e. moving a layer. While testing I found
663 * that I switch layers and actions at the same time and it was annoying to mind the
664 * order. This way it works as visual clue for new users */
665 // FIXME: This does not belong here.
666 for (final AbstractButton b: Main.map.allMapModeButtons) {
667 MapMode mode = (MapMode) b.getAction();
668 final boolean activeLayerSupported = mode.layerIsSupported(layerManager.getActiveLayer());
669 if (activeLayerSupported) {
670 Main.registerActionShortcut(mode, mode.getShortcut()); //fix #6876
671 } else {
672 Main.unregisterShortcut(mode.getShortcut());
673 }
674 b.setEnabled(activeLayerSupported);
675 }
676 }
677 AudioPlayer.reset();
678 repaint();
679 }
680
681 /**
682 * Adds a new temporary layer.
683 * <p>
684 * A temporary layer is a layer that is painted above all normal layers. Layers are painted in the order they are added.
685 *
686 * @param mvp The layer to paint.
687 * @return <code>true</code> if the layer was added.
688 */
689 public boolean addTemporaryLayer(MapViewPaintable mvp) {
690 synchronized (temporaryLayers) {
691 boolean added = temporaryLayers.add(mvp);
692 if (added) {
693 invalidatedListener.addTo(mvp);
694 }
695 return added;
696 }
697 }
698
699 /**
700 * Removes a layer previously added as temporary layer.
701 * @param mvp The layer to remove.
702 * @return <code>true</code> if that layer was removed.
703 */
704 public boolean removeTemporaryLayer(MapViewPaintable mvp) {
705 synchronized (temporaryLayers) {
706 boolean removed = temporaryLayers.remove(mvp);
707 if (removed) {
708 invalidatedListener.removeFrom(mvp);
709 }
710 return removed;
711 }
712 }
713
714 /**
715 * Gets a list of temporary layers.
716 * @return The layers in the order they are added.
717 */
718 public List<MapViewPaintable> getTemporaryLayers() {
719 synchronized (temporaryLayers) {
720 return Collections.unmodifiableList(new ArrayList<>(temporaryLayers));
721 }
722 }
723
724 @Override
725 public void propertyChange(PropertyChangeEvent evt) {
726 if (evt.getPropertyName().equals(Layer.VISIBLE_PROP)) {
727 repaint();
728 } else if (evt.getPropertyName().equals(Layer.OPACITY_PROP) ||
729 evt.getPropertyName().equals(Layer.FILTER_STATE_PROP)) {
730 Layer l = (Layer) evt.getSource();
731 if (l.isVisible()) {
732 invalidatedListener.invalidate(l);
733 }
734 }
735 }
736
737 @Override
738 public void preferenceChanged(PreferenceChangeEvent e) {
739 paintPreferencesChanged.set(true);
740 }
741
742 private final transient SelectionChangedListener repaintSelectionChangedListener = newSelection -> repaint();
743
744 /**
745 * Destroy this map view panel. Should be called once when it is not needed any more.
746 */
747 public void destroy() {
748 layerManager.removeLayerChangeListener(this, true);
749 layerManager.removeActiveLayerChangeListener(this);
750 Main.pref.removePreferenceChangeListener(this);
751 DataSet.removeSelectionListener(repaintSelectionChangedListener);
752 MultipolygonCache.getInstance().clear();
753 if (mapMover != null) {
754 mapMover.destroy();
755 }
756 nonChangedLayers.clear();
757 synchronized (temporaryLayers) {
758 temporaryLayers.clear();
759 }
760 nonChangedLayersBuffer = null;
761 offscreenBuffer = null;
762 }
763
764 /**
765 * Get a string representation of all layers suitable for the {@code source} changeset tag.
766 * @return A String of sources separated by ';'
767 */
768 public String getLayerInformationForSourceTag() {
769 final Set<String> layerInfo = new TreeSet<>();
770 if (!layerManager.getLayersOfType(GpxLayer.class).isEmpty()) {
771 // no i18n for international values
772 layerInfo.add("survey");
773 }
774 for (final GeoImageLayer i : layerManager.getLayersOfType(GeoImageLayer.class)) {
775 if (i.isVisible()) {
776 layerInfo.add(i.getName());
777 }
778 }
779 for (final ImageryLayer i : layerManager.getLayersOfType(ImageryLayer.class)) {
780 if (i.isVisible()) {
781 layerInfo.add(ImageryInfo.ImageryType.BING.equals(i.getInfo().getImageryType()) ? "Bing" : i.getName());
782 }
783 }
784 return Utils.join("; ", layerInfo);
785 }
786
787 /**
788 * This is a listener that gets informed whenever repaint is called for this MapView.
789 * <p>
790 * This is the only safe method to find changes to the map view, since many components call MapView.repaint() directly.
791 * @author Michael Zangl
792 * @since 10600 (functional interface)
793 */
794 @FunctionalInterface
795 public interface RepaintListener {
796 /**
797 * Called when any repaint method is called (using default arguments if required).
798 * @param tm see {@link JComponent#repaint(long, int, int, int, int)}
799 * @param x see {@link JComponent#repaint(long, int, int, int, int)}
800 * @param y see {@link JComponent#repaint(long, int, int, int, int)}
801 * @param width see {@link JComponent#repaint(long, int, int, int, int)}
802 * @param height see {@link JComponent#repaint(long, int, int, int, int)}
803 */
804 void repaint(long tm, int x, int y, int width, int height);
805 }
806
807 private final transient CopyOnWriteArrayList<RepaintListener> repaintListeners = new CopyOnWriteArrayList<>();
808
809 /**
810 * Adds a listener that gets informed whenever repaint() is called for this class.
811 * @param l The listener.
812 */
813 public void addRepaintListener(RepaintListener l) {
814 repaintListeners.add(l);
815 }
816
817 /**
818 * Removes a registered repaint listener.
819 * @param l The listener.
820 */
821 public void removeRepaintListener(RepaintListener l) {
822 repaintListeners.remove(l);
823 }
824
825 @Override
826 public void repaint(long tm, int x, int y, int width, int height) {
827 // This is the main repaint method, all other methods are convenience methods and simply call this method.
828 // This is just an observation, not a must, but seems to be true for all implementations I found so far.
829 if (repaintListeners != null) {
830 // Might get called early in super constructor
831 for (RepaintListener l : repaintListeners) {
832 l.repaint(tm, x, y, width, height);
833 }
834 }
835 super.repaint(tm, x, y, width, height);
836 }
837
838 @Override
839 public void repaint() {
840 if (Main.isTraceEnabled()) {
841 invalidatedListener.traceRandomRepaint();
842 }
843 super.repaint();
844 }
845
846 /**
847 * Returns the layer manager.
848 * @return the layer manager
849 * @since 10282
850 */
851 public final MainLayerManager getLayerManager() {
852 return layerManager;
853 }
854
855 /**
856 * Schedule a zoom to the given position on the next redraw.
857 * Temporary, may be removed without warning.
858 * @param viewportData the viewport to zoom to
859 * @since 10394
860 */
861 public void scheduleZoomTo(ViewportData viewportData) {
862 initialViewport = viewportData;
863 }
864}
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