001// License: GPL. For details, see LICENSE file. 002package org.openstreetmap.josm.gui; 003 004import java.awt.AlphaComposite; 005import java.awt.Color; 006import java.awt.Dimension; 007import java.awt.Graphics; 008import java.awt.Graphics2D; 009import java.awt.Point; 010import java.awt.Rectangle; 011import java.awt.event.ComponentAdapter; 012import java.awt.event.ComponentEvent; 013import java.awt.event.KeyEvent; 014import java.awt.event.MouseAdapter; 015import java.awt.event.MouseEvent; 016import java.awt.event.MouseMotionListener; 017import java.awt.geom.Area; 018import java.awt.image.BufferedImage; 019import java.beans.PropertyChangeEvent; 020import java.beans.PropertyChangeListener; 021import java.util.ArrayList; 022import java.util.Arrays; 023import java.util.Collections; 024import java.util.HashMap; 025import java.util.IdentityHashMap; 026import java.util.LinkedHashSet; 027import java.util.List; 028import java.util.Set; 029import java.util.TreeSet; 030import java.util.concurrent.CopyOnWriteArrayList; 031import java.util.concurrent.atomic.AtomicBoolean; 032 033import javax.swing.AbstractButton; 034import javax.swing.JComponent; 035import javax.swing.JPanel; 036 037import org.openstreetmap.josm.Main; 038import org.openstreetmap.josm.actions.mapmode.MapMode; 039import org.openstreetmap.josm.data.Bounds; 040import org.openstreetmap.josm.data.Preferences.PreferenceChangeEvent; 041import org.openstreetmap.josm.data.Preferences.PreferenceChangedListener; 042import org.openstreetmap.josm.data.ProjectionBounds; 043import org.openstreetmap.josm.data.SelectionChangedListener; 044import org.openstreetmap.josm.data.ViewportData; 045import org.openstreetmap.josm.data.coor.EastNorth; 046import org.openstreetmap.josm.data.imagery.ImageryInfo; 047import org.openstreetmap.josm.data.osm.DataSet; 048import org.openstreetmap.josm.data.osm.visitor.paint.PaintColors; 049import org.openstreetmap.josm.data.osm.visitor.paint.Rendering; 050import org.openstreetmap.josm.data.osm.visitor.paint.relations.MultipolygonCache; 051import org.openstreetmap.josm.gui.MapViewState.MapViewRectangle; 052import org.openstreetmap.josm.gui.datatransfer.OsmTransferHandler; 053import org.openstreetmap.josm.gui.layer.AbstractMapViewPaintable; 054import org.openstreetmap.josm.gui.layer.GpxLayer; 055import org.openstreetmap.josm.gui.layer.ImageryLayer; 056import org.openstreetmap.josm.gui.layer.Layer; 057import org.openstreetmap.josm.gui.layer.LayerManager; 058import org.openstreetmap.josm.gui.layer.LayerManager.LayerAddEvent; 059import org.openstreetmap.josm.gui.layer.LayerManager.LayerOrderChangeEvent; 060import org.openstreetmap.josm.gui.layer.LayerManager.LayerRemoveEvent; 061import org.openstreetmap.josm.gui.layer.MainLayerManager; 062import org.openstreetmap.josm.gui.layer.MainLayerManager.ActiveLayerChangeEvent; 063import org.openstreetmap.josm.gui.layer.MapViewGraphics; 064import org.openstreetmap.josm.gui.layer.MapViewPaintable; 065import org.openstreetmap.josm.gui.layer.MapViewPaintable.LayerPainter; 066import org.openstreetmap.josm.gui.layer.MapViewPaintable.MapViewEvent; 067import org.openstreetmap.josm.gui.layer.MapViewPaintable.PaintableInvalidationEvent; 068import org.openstreetmap.josm.gui.layer.MapViewPaintable.PaintableInvalidationListener; 069import org.openstreetmap.josm.gui.layer.OsmDataLayer; 070import org.openstreetmap.josm.gui.layer.geoimage.GeoImageLayer; 071import org.openstreetmap.josm.gui.layer.markerlayer.PlayHeadMarker; 072import org.openstreetmap.josm.tools.AudioPlayer; 073import org.openstreetmap.josm.tools.Shortcut; 074import org.openstreetmap.josm.tools.Utils; 075import org.openstreetmap.josm.tools.bugreport.BugReport; 076 077/** 078 * This is a component used in the {@link MapFrame} for browsing the map. It use is to 079 * provide the MapMode's enough capabilities to operate.<br><br> 080 * 081 * {@code MapView} holds meta-data about the data set currently displayed, as scale level, 082 * center point viewed, what scrolling mode or editing mode is selected or with 083 * what projection the map is viewed etc..<br><br> 084 * 085 * {@code MapView} is able to administrate several layers. 086 * 087 * @author imi 088 */ 089public class MapView extends NavigatableComponent 090implements PropertyChangeListener, PreferenceChangedListener, 091LayerManager.LayerChangeListener, MainLayerManager.ActiveLayerChangeListener { 092 093 /** 094 * An invalidation listener that simply calls repaint() for now. 095 * @author Michael Zangl 096 * @since 10271 097 */ 098 private class LayerInvalidatedListener implements PaintableInvalidationListener { 099 private boolean ignoreRepaint; 100 101 private final Set<MapViewPaintable> invalidatedLayers = Collections.newSetFromMap(new IdentityHashMap<MapViewPaintable, Boolean>()); 102 103 @Override 104 public void paintableInvalidated(PaintableInvalidationEvent event) { 105 invalidate(event.getLayer()); 106 } 107 108 /** 109 * Invalidate contents and repaint map view 110 * @param mapViewPaintable invalidated layer 111 */ 112 public synchronized void invalidate(MapViewPaintable mapViewPaintable) { 113 ignoreRepaint = true; 114 invalidatedLayers.add(mapViewPaintable); 115 repaint(); 116 } 117 118 /** 119 * Temporary until all {@link MapViewPaintable}s support this. 120 * @param p The paintable. 121 */ 122 public synchronized void addTo(MapViewPaintable p) { 123 if (p instanceof AbstractMapViewPaintable) { 124 ((AbstractMapViewPaintable) p).addInvalidationListener(this); 125 } 126 } 127 128 /** 129 * Temporary until all {@link MapViewPaintable}s support this. 130 * @param p The paintable. 131 */ 132 public synchronized void removeFrom(MapViewPaintable p) { 133 if (p instanceof AbstractMapViewPaintable) { 134 ((AbstractMapViewPaintable) p).removeInvalidationListener(this); 135 } 136 invalidatedLayers.remove(p); 137 } 138 139 /** 140 * Attempts to trace repaints that did not originate from this listener. Good to find missed {@link MapView#repaint()}s in code. 141 */ 142 protected synchronized void traceRandomRepaint() { 143 if (!ignoreRepaint) { 144 System.err.println("Repaint:"); 145 Thread.dumpStack(); 146 } 147 ignoreRepaint = false; 148 } 149 150 /** 151 * Retrieves a set of all layers that have been marked as invalid since the last call to this method. 152 * @return The layers 153 */ 154 protected synchronized Set<MapViewPaintable> collectInvalidatedLayers() { 155 Set<MapViewPaintable> layers = Collections.newSetFromMap(new IdentityHashMap<MapViewPaintable, Boolean>()); 156 layers.addAll(invalidatedLayers); 157 invalidatedLayers.clear(); 158 return layers; 159 } 160 } 161 162 /** 163 * A layer painter that issues a warning when being called. 164 * @author Michael Zangl 165 * @since 10474 166 */ 167 private static class WarningLayerPainter implements LayerPainter { 168 boolean warningPrinted; 169 private final Layer layer; 170 171 WarningLayerPainter(Layer layer) { 172 this.layer = layer; 173 } 174 175 @Override 176 public void paint(MapViewGraphics graphics) { 177 if (!warningPrinted) { 178 Main.debug("A layer triggered a repaint while being added: " + layer); 179 warningPrinted = true; 180 } 181 } 182 183 @Override 184 public void detachFromMapView(MapViewEvent event) { 185 // ignored 186 } 187 } 188 189 public boolean viewportFollowing; 190 191 /** 192 * A list of all layers currently loaded. If we support multiple map views, this list may be different for each of them. 193 */ 194 private final MainLayerManager layerManager; 195 196 /** 197 * The play head marker: there is only one of these so it isn't in any specific layer 198 */ 199 public transient PlayHeadMarker playHeadMarker; 200 201 /** 202 * The last event performed by mouse. 203 */ 204 public MouseEvent lastMEvent = new MouseEvent(this, 0, 0, 0, 0, 0, 0, false); // In case somebody reads it before first mouse move 205 206 /** 207 * Temporary layers (selection rectangle, etc.) that are never cached and 208 * drawn on top of regular layers. 209 * Access must be synchronized. 210 */ 211 private final transient Set<MapViewPaintable> temporaryLayers = new LinkedHashSet<>(); 212 213 private transient BufferedImage nonChangedLayersBuffer; 214 private transient BufferedImage offscreenBuffer; 215 // Layers that wasn't changed since last paint 216 private final transient List<Layer> nonChangedLayers = new ArrayList<>(); 217 private int lastViewID; 218 private final AtomicBoolean paintPreferencesChanged = new AtomicBoolean(true); 219 private Rectangle lastClipBounds = new Rectangle(); 220 private transient MapMover mapMover; 221 222 /** 223 * The listener that listens to invalidations of all layers. 224 */ 225 private final LayerInvalidatedListener invalidatedListener = new LayerInvalidatedListener(); 226 227 /** 228 * This is a map of all Layers that have been added to this view. 229 */ 230 private final HashMap<Layer, LayerPainter> registeredLayers = new HashMap<>(); 231 232 /** 233 * Constructs a new {@code MapView}. 234 * @param layerManager The layers to display. 235 * @param contentPane Ignored. Main content pane is used. 236 * @param viewportData the initial viewport of the map. Can be null, then 237 * the viewport is derived from the layer data. 238 * @since 10279 239 */ 240 public MapView(MainLayerManager layerManager, final JPanel contentPane, final ViewportData viewportData) { 241 this.layerManager = layerManager; 242 initialViewport = viewportData; 243 layerManager.addLayerChangeListener(this, true); 244 layerManager.addActiveLayerChangeListener(this); 245 Main.pref.addPreferenceChangeListener(this); 246 247 addComponentListener(new ComponentAdapter() { 248 @Override 249 public void componentResized(ComponentEvent e) { 250 removeComponentListener(this); 251 252 mapMover = new MapMover(MapView.this, contentPane); 253 } 254 }); 255 256 // listend to selection changes to redraw the map 257 DataSet.addSelectionListener(repaintSelectionChangedListener); 258 259 //store the last mouse action 260 this.addMouseMotionListener(new MouseMotionListener() { 261 @Override 262 public void mouseDragged(MouseEvent e) { 263 mouseMoved(e); 264 } 265 266 @Override 267 public void mouseMoved(MouseEvent e) { 268 lastMEvent = e; 269 } 270 }); 271 this.addMouseListener(new MouseAdapter() { 272 @Override 273 public void mousePressed(MouseEvent me) { 274 // focus the MapView component when mouse is pressed inside it 275 requestFocus(); 276 } 277 }); 278 279 setFocusTraversalKeysEnabled(!Shortcut.findShortcut(KeyEvent.VK_TAB, 0).isPresent()); 280 281 for (JComponent c : getMapNavigationComponents(this)) { 282 add(c); 283 } 284 setTransferHandler(new OsmTransferHandler()); 285 } 286 287 /** 288 * Adds the map navigation components to a 289 * @param forMapView The map view to get the components for. 290 * @return A list containing the correctly positioned map navigation components. 291 */ 292 public static List<? extends JComponent> getMapNavigationComponents(MapView forMapView) { 293 MapSlider zoomSlider = new MapSlider(forMapView); 294 Dimension size = zoomSlider.getPreferredSize(); 295 zoomSlider.setSize(size); 296 zoomSlider.setLocation(3, 0); 297 zoomSlider.setFocusTraversalKeysEnabled(!Shortcut.findShortcut(KeyEvent.VK_TAB, 0).isPresent()); 298 299 MapScaler scaler = new MapScaler(forMapView); 300 scaler.setPreferredLineLength(size.width - 10); 301 scaler.setSize(scaler.getPreferredSize()); 302 scaler.setLocation(3, size.height); 303 304 return Arrays.asList(zoomSlider, scaler); 305 } 306 307 // remebered geometry of the component 308 private Dimension oldSize; 309 private Point oldLoc; 310 311 /** 312 * Call this method to keep map position on screen during next repaint 313 */ 314 public void rememberLastPositionOnScreen() { 315 oldSize = getSize(); 316 oldLoc = getLocationOnScreen(); 317 } 318 319 @Override 320 public void layerAdded(LayerAddEvent e) { 321 try { 322 Layer layer = e.getAddedLayer(); 323 registeredLayers.put(layer, new WarningLayerPainter(layer)); 324 // Layers may trigger a redraw during this call if they open dialogs. 325 LayerPainter painter = layer.attachToMapView(new MapViewEvent(this, false)); 326 if (!registeredLayers.containsKey(layer)) { 327 // The layer may have removed itself during attachToMapView() 328 Main.warn("Layer was removed during attachToMapView()"); 329 } else { 330 registeredLayers.put(layer, painter); 331 332 ProjectionBounds viewProjectionBounds = layer.getViewProjectionBounds(); 333 if (viewProjectionBounds != null) { 334 scheduleZoomTo(new ViewportData(viewProjectionBounds)); 335 } 336 337 layer.addPropertyChangeListener(this); 338 Main.addProjectionChangeListener(layer); 339 invalidatedListener.addTo(layer); 340 AudioPlayer.reset(); 341 342 repaint(); 343 } 344 } catch (RuntimeException t) { 345 throw BugReport.intercept(t).put("layer", e.getAddedLayer()); 346 } 347 } 348 349 /** 350 * Replies true if the active data layer (edit layer) is drawable. 351 * 352 * @return true if the active data layer (edit layer) is drawable, false otherwise 353 */ 354 public boolean isActiveLayerDrawable() { 355 return layerManager.getEditLayer() != null; 356 } 357 358 /** 359 * Replies true if the active data layer (edit layer) is visible. 360 * 361 * @return true if the active data layer (edit layer) is visible, false otherwise 362 */ 363 public boolean isActiveLayerVisible() { 364 OsmDataLayer e = layerManager.getEditLayer(); 365 return e != null && e.isVisible(); 366 } 367 368 @Override 369 public void layerRemoving(LayerRemoveEvent e) { 370 Layer layer = e.getRemovedLayer(); 371 372 LayerPainter painter = registeredLayers.remove(layer); 373 if (painter == null) { 374 Main.error("The painter for layer " + layer + " was not registered."); 375 return; 376 } 377 painter.detachFromMapView(new MapViewEvent(this, false)); 378 Main.removeProjectionChangeListener(layer); 379 layer.removePropertyChangeListener(this); 380 invalidatedListener.removeFrom(layer); 381 layer.destroy(); 382 AudioPlayer.reset(); 383 384 repaint(); 385 } 386 387 private boolean virtualNodesEnabled; 388 389 public void setVirtualNodesEnabled(boolean enabled) { 390 if (virtualNodesEnabled != enabled) { 391 virtualNodesEnabled = enabled; 392 repaint(); 393 } 394 } 395 396 /** 397 * Checks if virtual nodes should be drawn. Default is <code>false</code> 398 * @return The virtual nodes property. 399 * @see Rendering#render(DataSet, boolean, Bounds) 400 */ 401 public boolean isVirtualNodesEnabled() { 402 return virtualNodesEnabled; 403 } 404 405 /** 406 * Moves the layer to the given new position. No event is fired, but repaints 407 * according to the new Z-Order of the layers. 408 * 409 * @param layer The layer to move 410 * @param pos The new position of the layer 411 */ 412 public void moveLayer(Layer layer, int pos) { 413 layerManager.moveLayer(layer, pos); 414 } 415 416 @Override 417 public void layerOrderChanged(LayerOrderChangeEvent e) { 418 AudioPlayer.reset(); 419 repaint(); 420 } 421 422 private void paintLayer(Layer layer, Graphics2D g, Bounds box) { 423 try { 424 LayerPainter painter = registeredLayers.get(layer); 425 if (painter == null) { 426 throw new IllegalArgumentException("Cannot paint layer, it is not registered."); 427 } 428 MapViewRectangle clipBounds = getState().getViewArea(g.getClipBounds()); 429 MapViewGraphics paintGraphics = new MapViewGraphics(this, g, clipBounds); 430 431 if (layer.getOpacity() < 1) { 432 g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, (float) layer.getOpacity())); 433 } 434 painter.paint(paintGraphics); 435 g.setPaintMode(); 436 } catch (RuntimeException t) { 437 BugReport.intercept(t).put("layer", layer).put("bounds", box).warn(); 438 } 439 } 440 441 /** 442 * Draw the component. 443 */ 444 @Override 445 public void paint(Graphics g) { 446 try { 447 if (!prepareToDraw()) { 448 return; 449 } 450 } catch (RuntimeException e) { 451 BugReport.intercept(e).put("center", this::getCenter).warn(); 452 return; 453 } 454 455 List<Layer> visibleLayers = layerManager.getVisibleLayersInZOrder(); 456 457 int nonChangedLayersCount = 0; 458 Set<MapViewPaintable> invalidated = invalidatedListener.collectInvalidatedLayers(); 459 for (Layer l: visibleLayers) { 460 // `isChanged` for backward compatibility, see https://josm.openstreetmap.de/ticket/13175#comment:7 461 // Layers that still implement it (plugins) will use it to tell the MapView that they have been changed. 462 // This is why the MapView still uses it in addition to the invalidation events. 463 if (l.isChanged() || invalidated.contains(l)) { 464 break; 465 } else { 466 nonChangedLayersCount++; 467 } 468 } 469 470 boolean canUseBuffer = !paintPreferencesChanged.getAndSet(false) 471 && nonChangedLayers.size() <= nonChangedLayersCount 472 && lastViewID == getViewID() 473 && lastClipBounds.contains(g.getClipBounds()) 474 && nonChangedLayers.equals(visibleLayers.subList(0, nonChangedLayers.size())); 475 476 if (null == offscreenBuffer || offscreenBuffer.getWidth() != getWidth() || offscreenBuffer.getHeight() != getHeight()) { 477 offscreenBuffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_3BYTE_BGR); 478 } 479 480 Graphics2D tempG = offscreenBuffer.createGraphics(); 481 tempG.setClip(g.getClip()); 482 Bounds box = getLatLonBounds(g.getClipBounds()); 483 484 if (!canUseBuffer || nonChangedLayersBuffer == null) { 485 if (null == nonChangedLayersBuffer 486 || nonChangedLayersBuffer.getWidth() != getWidth() || nonChangedLayersBuffer.getHeight() != getHeight()) { 487 nonChangedLayersBuffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_3BYTE_BGR); 488 } 489 Graphics2D g2 = nonChangedLayersBuffer.createGraphics(); 490 g2.setClip(g.getClip()); 491 g2.setColor(PaintColors.getBackgroundColor()); 492 g2.fillRect(0, 0, getWidth(), getHeight()); 493 494 for (int i = 0; i < nonChangedLayersCount; i++) { 495 paintLayer(visibleLayers.get(i), g2, box); 496 } 497 } else { 498 // Maybe there were more unchanged layers then last time - draw them to buffer 499 if (nonChangedLayers.size() != nonChangedLayersCount) { 500 Graphics2D g2 = nonChangedLayersBuffer.createGraphics(); 501 g2.setClip(g.getClip()); 502 for (int i = nonChangedLayers.size(); i < nonChangedLayersCount; i++) { 503 paintLayer(visibleLayers.get(i), g2, box); 504 } 505 } 506 } 507 508 nonChangedLayers.clear(); 509 nonChangedLayers.addAll(visibleLayers.subList(0, nonChangedLayersCount)); 510 lastViewID = getViewID(); 511 lastClipBounds = g.getClipBounds(); 512 513 tempG.drawImage(nonChangedLayersBuffer, 0, 0, null); 514 515 for (int i = nonChangedLayersCount; i < visibleLayers.size(); i++) { 516 paintLayer(visibleLayers.get(i), tempG, box); 517 } 518 519 try { 520 drawTemporaryLayers(tempG, box); 521 } catch (RuntimeException e) { 522 BugReport.intercept(e).put("temporaryLayers", temporaryLayers).warn(); 523 } 524 525 // draw world borders 526 try { 527 drawWorldBorders(tempG); 528 } catch (RuntimeException e) { 529 // getProjection() needs to be inside lambda to catch errors. 530 BugReport.intercept(e).put("bounds", () -> getProjection().getWorldBoundsLatLon()).warn(); 531 } 532 533 if (Main.isDisplayingMapView() && Main.map.filterDialog != null) { 534 Main.map.filterDialog.drawOSDText(tempG); 535 } 536 537 if (playHeadMarker != null) { 538 playHeadMarker.paint(tempG, this); 539 } 540 541 try { 542 g.drawImage(offscreenBuffer, 0, 0, null); 543 } catch (ClassCastException e) { 544 // See #11002 and duplicate tickets. On Linux with Java >= 8 Many users face this error here: 545 // 546 // java.lang.ClassCastException: sun.awt.image.BufImgSurfaceData cannot be cast to sun.java2d.xr.XRSurfaceData 547 // at sun.java2d.xr.XRPMBlitLoops.cacheToTmpSurface(XRPMBlitLoops.java:145) 548 // at sun.java2d.xr.XrSwToPMBlit.Blit(XRPMBlitLoops.java:353) 549 // at sun.java2d.pipe.DrawImage.blitSurfaceData(DrawImage.java:959) 550 // at sun.java2d.pipe.DrawImage.renderImageCopy(DrawImage.java:577) 551 // at sun.java2d.pipe.DrawImage.copyImage(DrawImage.java:67) 552 // at sun.java2d.pipe.DrawImage.copyImage(DrawImage.java:1014) 553 // at sun.java2d.pipe.ValidatePipe.copyImage(ValidatePipe.java:186) 554 // at sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:3318) 555 // at sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:3296) 556 // at org.openstreetmap.josm.gui.MapView.paint(MapView.java:834) 557 // 558 // It seems to be this JDK bug, but Oracle does not seem to be fixing it: 559 // https://bugs.openjdk.java.net/browse/JDK-7172749 560 // 561 // According to bug reports it can happen for a variety of reasons such as: 562 // - long period of time 563 // - change of screen resolution 564 // - addition/removal of a secondary monitor 565 // 566 // But the application seems to work fine after, so let's just log the error 567 Main.error(e); 568 } 569 super.paint(g); 570 } 571 572 private void drawTemporaryLayers(Graphics2D tempG, Bounds box) { 573 synchronized (temporaryLayers) { 574 for (MapViewPaintable mvp : temporaryLayers) { 575 try { 576 mvp.paint(tempG, this, box); 577 } catch (RuntimeException e) { 578 throw BugReport.intercept(e).put("mvp", mvp); 579 } 580 } 581 } 582 } 583 584 private void drawWorldBorders(Graphics2D tempG) { 585 tempG.setColor(Color.WHITE); 586 Bounds b = getProjection().getWorldBoundsLatLon(); 587 588 int w = getWidth(); 589 int h = getHeight(); 590 591 // Work around OpenJDK having problems when drawing out of bounds 592 final Area border = getState().getArea(b); 593 // Make the viewport 1px larger in every direction to prevent an 594 // additional 1px border when zooming in 595 final Area viewport = new Area(new Rectangle(-1, -1, w + 2, h + 2)); 596 border.intersect(viewport); 597 tempG.draw(border); 598 } 599 600 /** 601 * Sets up the viewport to prepare for drawing the view. 602 * @return <code>true</code> if the view can be drawn, <code>false</code> otherwise. 603 */ 604 public boolean prepareToDraw() { 605 updateLocationState(); 606 if (initialViewport != null) { 607 zoomTo(initialViewport); 608 initialViewport = null; 609 } 610 611 if (getCenter() == null) 612 return false; // no data loaded yet. 613 614 // if the position was remembered, we need to adjust center once before repainting 615 if (oldLoc != null && oldSize != null) { 616 Point l1 = getLocationOnScreen(); 617 final EastNorth newCenter = new EastNorth( 618 getCenter().getX()+ (l1.x-oldLoc.x - (oldSize.width-getWidth())/2.0)*getScale(), 619 getCenter().getY()+ (oldLoc.y-l1.y + (oldSize.height-getHeight())/2.0)*getScale() 620 ); 621 oldLoc = null; oldSize = null; 622 zoomTo(newCenter); 623 } 624 625 return true; 626 } 627 628 @Override 629 public void activeOrEditLayerChanged(ActiveLayerChangeEvent e) { 630 if (Main.map != null) { 631 /* This only makes the buttons look disabled. Disabling the actions as well requires 632 * the user to re-select the tool after i.e. moving a layer. While testing I found 633 * that I switch layers and actions at the same time and it was annoying to mind the 634 * order. This way it works as visual clue for new users */ 635 // FIXME: This does not belong here. 636 for (final AbstractButton b: Main.map.allMapModeButtons) { 637 MapMode mode = (MapMode) b.getAction(); 638 final boolean activeLayerSupported = mode.layerIsSupported(layerManager.getActiveLayer()); 639 if (activeLayerSupported) { 640 Main.registerActionShortcut(mode, mode.getShortcut()); //fix #6876 641 } else { 642 Main.unregisterShortcut(mode.getShortcut()); 643 } 644 b.setEnabled(activeLayerSupported); 645 } 646 } 647 AudioPlayer.reset(); 648 repaint(); 649 } 650 651 /** 652 * Adds a new temporary layer. 653 * <p> 654 * A temporary layer is a layer that is painted above all normal layers. Layers are painted in the order they are added. 655 * 656 * @param mvp The layer to paint. 657 * @return <code>true</code> if the layer was added. 658 */ 659 public boolean addTemporaryLayer(MapViewPaintable mvp) { 660 synchronized (temporaryLayers) { 661 boolean added = temporaryLayers.add(mvp); 662 if (added) { 663 invalidatedListener.addTo(mvp); 664 } 665 return added; 666 } 667 } 668 669 /** 670 * Removes a layer previously added as temporary layer. 671 * @param mvp The layer to remove. 672 * @return <code>true</code> if that layer was removed. 673 */ 674 public boolean removeTemporaryLayer(MapViewPaintable mvp) { 675 synchronized (temporaryLayers) { 676 boolean removed = temporaryLayers.remove(mvp); 677 if (removed) { 678 invalidatedListener.removeFrom(mvp); 679 } 680 return removed; 681 } 682 } 683 684 /** 685 * Gets a list of temporary layers. 686 * @return The layers in the order they are added. 687 */ 688 public List<MapViewPaintable> getTemporaryLayers() { 689 synchronized (temporaryLayers) { 690 return Collections.unmodifiableList(new ArrayList<>(temporaryLayers)); 691 } 692 } 693 694 @Override 695 public void propertyChange(PropertyChangeEvent evt) { 696 if (evt.getPropertyName().equals(Layer.VISIBLE_PROP)) { 697 repaint(); 698 } else if (evt.getPropertyName().equals(Layer.OPACITY_PROP) || 699 evt.getPropertyName().equals(Layer.FILTER_STATE_PROP)) { 700 Layer l = (Layer) evt.getSource(); 701 if (l.isVisible()) { 702 invalidatedListener.invalidate(l); 703 } 704 } 705 } 706 707 @Override 708 public void preferenceChanged(PreferenceChangeEvent e) { 709 paintPreferencesChanged.set(true); 710 } 711 712 private final transient SelectionChangedListener repaintSelectionChangedListener = newSelection -> repaint(); 713 714 /** 715 * Destroy this map view panel. Should be called once when it is not needed any more. 716 */ 717 public void destroy() { 718 layerManager.removeLayerChangeListener(this, true); 719 layerManager.removeActiveLayerChangeListener(this); 720 Main.pref.removePreferenceChangeListener(this); 721 DataSet.removeSelectionListener(repaintSelectionChangedListener); 722 MultipolygonCache.getInstance().clear(this); 723 if (mapMover != null) { 724 mapMover.destroy(); 725 } 726 nonChangedLayers.clear(); 727 synchronized (temporaryLayers) { 728 temporaryLayers.clear(); 729 } 730 nonChangedLayersBuffer = null; 731 offscreenBuffer = null; 732 } 733 734 /** 735 * Get a string representation of all layers suitable for the {@code source} changeset tag. 736 * @return A String of sources separated by ';' 737 */ 738 public String getLayerInformationForSourceTag() { 739 final Set<String> layerInfo = new TreeSet<>(); 740 if (!layerManager.getLayersOfType(GpxLayer.class).isEmpty()) { 741 // no i18n for international values 742 layerInfo.add("survey"); 743 } 744 for (final GeoImageLayer i : layerManager.getLayersOfType(GeoImageLayer.class)) { 745 if (i.isVisible()) { 746 layerInfo.add(i.getName()); 747 } 748 } 749 for (final ImageryLayer i : layerManager.getLayersOfType(ImageryLayer.class)) { 750 if (i.isVisible()) { 751 layerInfo.add(ImageryInfo.ImageryType.BING.equals(i.getInfo().getImageryType()) ? "Bing" : i.getName()); 752 } 753 } 754 return Utils.join("; ", layerInfo); 755 } 756 757 /** 758 * This is a listener that gets informed whenever repaint is called for this MapView. 759 * <p> 760 * This is the only safe method to find changes to the map view, since many components call MapView.repaint() directly. 761 * @author Michael Zangl 762 * @since 10600 (functional interface) 763 */ 764 @FunctionalInterface 765 public interface RepaintListener { 766 /** 767 * Called when any repaint method is called (using default arguments if required). 768 * @param tm see {@link JComponent#repaint(long, int, int, int, int)} 769 * @param x see {@link JComponent#repaint(long, int, int, int, int)} 770 * @param y see {@link JComponent#repaint(long, int, int, int, int)} 771 * @param width see {@link JComponent#repaint(long, int, int, int, int)} 772 * @param height see {@link JComponent#repaint(long, int, int, int, int)} 773 */ 774 void repaint(long tm, int x, int y, int width, int height); 775 } 776 777 private final transient CopyOnWriteArrayList<RepaintListener> repaintListeners = new CopyOnWriteArrayList<>(); 778 779 /** 780 * Adds a listener that gets informed whenever repaint() is called for this class. 781 * @param l The listener. 782 */ 783 public void addRepaintListener(RepaintListener l) { 784 repaintListeners.add(l); 785 } 786 787 /** 788 * Removes a registered repaint listener. 789 * @param l The listener. 790 */ 791 public void removeRepaintListener(RepaintListener l) { 792 repaintListeners.remove(l); 793 } 794 795 @Override 796 public void repaint(long tm, int x, int y, int width, int height) { 797 // This is the main repaint method, all other methods are convenience methods and simply call this method. 798 // This is just an observation, not a must, but seems to be true for all implementations I found so far. 799 if (repaintListeners != null) { 800 // Might get called early in super constructor 801 for (RepaintListener l : repaintListeners) { 802 l.repaint(tm, x, y, width, height); 803 } 804 } 805 super.repaint(tm, x, y, width, height); 806 } 807 808 @Override 809 public void repaint() { 810 if (Main.isTraceEnabled()) { 811 invalidatedListener.traceRandomRepaint(); 812 } 813 super.repaint(); 814 } 815 816 /** 817 * Returns the layer manager. 818 * @return the layer manager 819 * @since 10282 820 */ 821 public final MainLayerManager getLayerManager() { 822 return layerManager; 823 } 824 825 /** 826 * Schedule a zoom to the given position on the next redraw. 827 * Temporary, may be removed without warning. 828 * @param viewportData the viewport to zoom to 829 * @since 10394 830 */ 831 public void scheduleZoomTo(ViewportData viewportData) { 832 initialViewport = viewportData; 833 } 834}