source: josm/trunk/src/org/openstreetmap/josm/gui/MapView.java@ 13521

Last change on this file since 13521 was 13434, checked in by Don-vip, 6 years ago

see #8039, see #10456 - support read-only data layers
  • Property svn:eol-style set to native
File size: 35.6 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.Shape;
12import java.awt.event.ComponentAdapter;
13import java.awt.event.ComponentEvent;
14import java.awt.event.KeyEvent;
15import java.awt.event.MouseAdapter;
16import java.awt.event.MouseEvent;
17import java.awt.event.MouseMotionListener;
18import java.awt.geom.AffineTransform;
19import java.awt.geom.Area;
20import java.awt.image.BufferedImage;
21import java.beans.PropertyChangeEvent;
22import java.beans.PropertyChangeListener;
23import java.util.ArrayList;
24import java.util.Arrays;
25import java.util.Collections;
26import java.util.HashMap;
27import java.util.IdentityHashMap;
28import java.util.LinkedHashSet;
29import java.util.List;
30import java.util.Set;
31import java.util.TreeSet;
32import java.util.concurrent.CopyOnWriteArrayList;
33import java.util.concurrent.atomic.AtomicBoolean;
34
35import javax.swing.AbstractButton;
36import javax.swing.JComponent;
37import javax.swing.SwingUtilities;
38
39import org.openstreetmap.josm.Main;
40import org.openstreetmap.josm.actions.mapmode.MapMode;
41import org.openstreetmap.josm.data.Bounds;
42import org.openstreetmap.josm.data.ProjectionBounds;
43import org.openstreetmap.josm.data.ViewportData;
44import org.openstreetmap.josm.data.coor.EastNorth;
45import org.openstreetmap.josm.data.imagery.ImageryInfo;
46import org.openstreetmap.josm.data.osm.DataSelectionListener;
47import org.openstreetmap.josm.data.osm.event.SelectionEventManager;
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.autofilter.AutoFilterManager;
53import org.openstreetmap.josm.gui.datatransfer.OsmTransferHandler;
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.gui.mappaint.MapPaintStyles;
73import org.openstreetmap.josm.gui.mappaint.MapPaintStyles.MapPaintSylesUpdateListener;
74import org.openstreetmap.josm.io.audio.AudioPlayer;
75import org.openstreetmap.josm.spi.preferences.Config;
76import org.openstreetmap.josm.spi.preferences.PreferenceChangeEvent;
77import org.openstreetmap.josm.spi.preferences.PreferenceChangedListener;
78import org.openstreetmap.josm.tools.JosmRuntimeException;
79import org.openstreetmap.josm.tools.Logging;
80import org.openstreetmap.josm.tools.Shortcut;
81import org.openstreetmap.josm.tools.Utils;
82import org.openstreetmap.josm.tools.bugreport.BugReport;
83
84/**
85 * This is a component used in the {@link MapFrame} for browsing the map. It use is to
86 * provide the MapMode's enough capabilities to operate.<br><br>
87 *
88 * {@code MapView} holds meta-data about the data set currently displayed, as scale level,
89 * center point viewed, what scrolling mode or editing mode is selected or with
90 * what projection the map is viewed etc..<br><br>
91 *
92 * {@code MapView} is able to administrate several layers.
93 *
94 * @author imi
95 */
96public class MapView extends NavigatableComponent
97implements PropertyChangeListener, PreferenceChangedListener,
98LayerManager.LayerChangeListener, MainLayerManager.ActiveLayerChangeListener {
99
100 static {
101 MapPaintStyles.addMapPaintSylesUpdateListener(new MapPaintSylesUpdateListener() {
102 @Override
103 public void mapPaintStylesUpdated() {
104 SwingUtilities.invokeLater(() -> {
105 // Trigger a repaint of all data layers
106 MainApplication.getLayerManager().getLayers()
107 .stream()
108 .filter(layer -> layer instanceof OsmDataLayer)
109 .forEach(Layer::invalidate);
110 });
111 }
112
113 @Override
114 public void mapPaintStyleEntryUpdated(int index) {
115 mapPaintStylesUpdated();
116 }
117 });
118 }
119
120 /**
121 * An invalidation listener that simply calls repaint() for now.
122 * @author Michael Zangl
123 * @since 10271
124 */
125 private class LayerInvalidatedListener implements PaintableInvalidationListener {
126 private boolean ignoreRepaint;
127
128 private final Set<MapViewPaintable> invalidatedLayers = Collections.newSetFromMap(new IdentityHashMap<MapViewPaintable, Boolean>());
129
130 @Override
131 public void paintableInvalidated(PaintableInvalidationEvent event) {
132 invalidate(event.getLayer());
133 }
134
135 /**
136 * Invalidate contents and repaint map view
137 * @param mapViewPaintable invalidated layer
138 */
139 public synchronized void invalidate(MapViewPaintable mapViewPaintable) {
140 ignoreRepaint = true;
141 invalidatedLayers.add(mapViewPaintable);
142 repaint();
143 }
144
145 /**
146 * Temporary until all {@link MapViewPaintable}s support this.
147 * @param p The paintable.
148 */
149 public synchronized void addTo(MapViewPaintable p) {
150 p.addInvalidationListener(this);
151 }
152
153 /**
154 * Temporary until all {@link MapViewPaintable}s support this.
155 * @param p The paintable.
156 */
157 public synchronized void removeFrom(MapViewPaintable p) {
158 p.removeInvalidationListener(this);
159 invalidatedLayers.remove(p);
160 }
161
162 /**
163 * Attempts to trace repaints that did not originate from this listener. Good to find missed {@link MapView#repaint()}s in code.
164 */
165 protected synchronized void traceRandomRepaint() {
166 if (!ignoreRepaint) {
167 System.err.println("Repaint:");
168 Thread.dumpStack();
169 }
170 ignoreRepaint = false;
171 }
172
173 /**
174 * Retrieves a set of all layers that have been marked as invalid since the last call to this method.
175 * @return The layers
176 */
177 protected synchronized Set<MapViewPaintable> collectInvalidatedLayers() {
178 Set<MapViewPaintable> layers = Collections.newSetFromMap(new IdentityHashMap<MapViewPaintable, Boolean>());
179 layers.addAll(invalidatedLayers);
180 invalidatedLayers.clear();
181 return layers;
182 }
183 }
184
185 /**
186 * A layer painter that issues a warning when being called.
187 * @author Michael Zangl
188 * @since 10474
189 */
190 private static class WarningLayerPainter implements LayerPainter {
191 boolean warningPrinted;
192 private final Layer layer;
193
194 WarningLayerPainter(Layer layer) {
195 this.layer = layer;
196 }
197
198 @Override
199 public void paint(MapViewGraphics graphics) {
200 if (!warningPrinted) {
201 Logging.debug("A layer triggered a repaint while being added: " + layer);
202 warningPrinted = true;
203 }
204 }
205
206 @Override
207 public void detachFromMapView(MapViewEvent event) {
208 // ignored
209 }
210 }
211
212 /**
213 * A list of all layers currently loaded. If we support multiple map views, this list may be different for each of them.
214 */
215 private final MainLayerManager layerManager;
216
217 /**
218 * The play head marker: there is only one of these so it isn't in any specific layer
219 */
220 public transient PlayHeadMarker playHeadMarker;
221
222 /**
223 * The last event performed by mouse.
224 */
225 public MouseEvent lastMEvent = new MouseEvent(this, 0, 0, 0, 0, 0, 0, false); // In case somebody reads it before first mouse move
226
227 /**
228 * Temporary layers (selection rectangle, etc.) that are never cached and
229 * drawn on top of regular layers.
230 * Access must be synchronized.
231 */
232 private final transient Set<MapViewPaintable> temporaryLayers = new LinkedHashSet<>();
233
234 private transient BufferedImage nonChangedLayersBuffer;
235 private transient BufferedImage offscreenBuffer;
236 // Layers that wasn't changed since last paint
237 private final transient List<Layer> nonChangedLayers = new ArrayList<>();
238 private int lastViewID;
239 private final AtomicBoolean paintPreferencesChanged = new AtomicBoolean(true);
240 private Rectangle lastClipBounds = new Rectangle();
241 private transient MapMover mapMover;
242
243 /**
244 * The listener that listens to invalidations of all layers.
245 */
246 private final LayerInvalidatedListener invalidatedListener = new LayerInvalidatedListener();
247
248 /**
249 * This is a map of all Layers that have been added to this view.
250 */
251 private final HashMap<Layer, LayerPainter> registeredLayers = new HashMap<>();
252
253 /**
254 * Constructs a new {@code MapView}.
255 * @param layerManager The layers to display.
256 * @param viewportData the initial viewport of the map. Can be null, then
257 * the viewport is derived from the layer data.
258 * @since 11713
259 */
260 public MapView(MainLayerManager layerManager, final ViewportData viewportData) {
261 this.layerManager = layerManager;
262 initialViewport = viewportData;
263 layerManager.addAndFireLayerChangeListener(this);
264 layerManager.addActiveLayerChangeListener(this);
265 Config.getPref().addPreferenceChangeListener(this);
266
267 addComponentListener(new ComponentAdapter() {
268 @Override
269 public void componentResized(ComponentEvent e) {
270 removeComponentListener(this);
271 mapMover = new MapMover(MapView.this);
272 }
273 });
274
275 // listens to selection changes to redraw the map
276 SelectionEventManager.getInstance().addSelectionListenerForEdt(repaintSelectionChangedListener);
277
278 //store the last mouse action
279 this.addMouseMotionListener(new MouseMotionListener() {
280 @Override
281 public void mouseDragged(MouseEvent e) {
282 mouseMoved(e);
283 }
284
285 @Override
286 public void mouseMoved(MouseEvent e) {
287 lastMEvent = e;
288 }
289 });
290 this.addMouseListener(new MouseAdapter() {
291 @Override
292 public void mousePressed(MouseEvent me) {
293 // focus the MapView component when mouse is pressed inside it
294 requestFocus();
295 }
296 });
297
298 setFocusTraversalKeysEnabled(!Shortcut.findShortcut(KeyEvent.VK_TAB, 0).isPresent());
299
300 for (JComponent c : getMapNavigationComponents(this)) {
301 add(c);
302 }
303 if (AutoFilterManager.PROP_AUTO_FILTER_ENABLED.get()) {
304 AutoFilterManager.getInstance().enableAutoFilterRule(AutoFilterManager.PROP_AUTO_FILTER_RULE.get());
305 }
306 setTransferHandler(new OsmTransferHandler());
307 }
308
309 /**
310 * Adds the map navigation components to a
311 * @param forMapView The map view to get the components for.
312 * @return A list containing the correctly positioned map navigation components.
313 */
314 public static List<? extends JComponent> getMapNavigationComponents(MapView forMapView) {
315 MapSlider zoomSlider = new MapSlider(forMapView);
316 Dimension size = zoomSlider.getPreferredSize();
317 zoomSlider.setSize(size);
318 zoomSlider.setLocation(3, 0);
319 zoomSlider.setFocusTraversalKeysEnabled(!Shortcut.findShortcut(KeyEvent.VK_TAB, 0).isPresent());
320
321 MapScaler scaler = new MapScaler(forMapView);
322 scaler.setPreferredLineLength(size.width - 10);
323 scaler.setSize(scaler.getPreferredSize());
324 scaler.setLocation(3, size.height);
325
326 return Arrays.asList(zoomSlider, scaler);
327 }
328
329 // remebered geometry of the component
330 private Dimension oldSize;
331 private Point oldLoc;
332
333 /**
334 * Call this method to keep map position on screen during next repaint
335 */
336 public void rememberLastPositionOnScreen() {
337 oldSize = getSize();
338 oldLoc = getLocationOnScreen();
339 }
340
341 @Override
342 public void layerAdded(LayerAddEvent e) {
343 try {
344 Layer layer = e.getAddedLayer();
345 registeredLayers.put(layer, new WarningLayerPainter(layer));
346 // Layers may trigger a redraw during this call if they open dialogs.
347 LayerPainter painter = layer.attachToMapView(new MapViewEvent(this, false));
348 if (!registeredLayers.containsKey(layer)) {
349 // The layer may have removed itself during attachToMapView()
350 Logging.warn("Layer was removed during attachToMapView()");
351 } else {
352 registeredLayers.put(layer, painter);
353
354 if (e.isZoomRequired()) {
355 ProjectionBounds viewProjectionBounds = layer.getViewProjectionBounds();
356 if (viewProjectionBounds != null) {
357 scheduleZoomTo(new ViewportData(viewProjectionBounds));
358 }
359 }
360
361 layer.addPropertyChangeListener(this);
362 Main.addProjectionChangeListener(layer);
363 invalidatedListener.addTo(layer);
364 AudioPlayer.reset();
365
366 repaint();
367 }
368 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException t) {
369 throw BugReport.intercept(t).put("layer", e.getAddedLayer());
370 }
371 }
372
373 /**
374 * Replies true if the active data layer (edit layer) is drawable.
375 *
376 * @return true if the active data layer (edit layer) is drawable, false otherwise
377 */
378 public boolean isActiveLayerDrawable() {
379 return layerManager.getEditLayer() != null;
380 }
381
382 /**
383 * Replies true if the active data layer is visible.
384 *
385 * @return true if the active data layer is visible, false otherwise
386 */
387 public boolean isActiveLayerVisible() {
388 OsmDataLayer e = layerManager.getActiveDataLayer();
389 return e != null && e.isVisible();
390 }
391
392 @Override
393 public void layerRemoving(LayerRemoveEvent e) {
394 Layer layer = e.getRemovedLayer();
395
396 LayerPainter painter = registeredLayers.remove(layer);
397 if (painter == null) {
398 Logging.error("The painter for layer " + layer + " was not registered.");
399 return;
400 }
401 painter.detachFromMapView(new MapViewEvent(this, false));
402 Main.removeProjectionChangeListener(layer);
403 layer.removePropertyChangeListener(this);
404 invalidatedListener.removeFrom(layer);
405 layer.destroy();
406 AudioPlayer.reset();
407
408 repaint();
409 }
410
411 private boolean virtualNodesEnabled;
412
413 /**
414 * Enables or disables drawing of the virtual nodes.
415 * @param enabled if virtual nodes are enabled
416 */
417 public void setVirtualNodesEnabled(boolean enabled) {
418 if (virtualNodesEnabled != enabled) {
419 virtualNodesEnabled = enabled;
420 repaint();
421 }
422 }
423
424 /**
425 * Checks if virtual nodes should be drawn. Default is <code>false</code>
426 * @return The virtual nodes property.
427 * @see Rendering#render
428 */
429 public boolean isVirtualNodesEnabled() {
430 return virtualNodesEnabled;
431 }
432
433 /**
434 * Moves the layer to the given new position. No event is fired, but repaints
435 * according to the new Z-Order of the layers.
436 *
437 * @param layer The layer to move
438 * @param pos The new position of the layer
439 */
440 public void moveLayer(Layer layer, int pos) {
441 layerManager.moveLayer(layer, pos);
442 }
443
444 @Override
445 public void layerOrderChanged(LayerOrderChangeEvent e) {
446 AudioPlayer.reset();
447 repaint();
448 }
449
450 /**
451 * Paints the given layer to the graphics object, using the current state of this map view.
452 * @param layer The layer to draw.
453 * @param g A graphics object. It should have the width and height of this component
454 * @throws IllegalArgumentException If the layer is not part of this map view.
455 * @since 11226
456 */
457 public void paintLayer(Layer layer, Graphics2D g) {
458 try {
459 LayerPainter painter = registeredLayers.get(layer);
460 if (painter == null) {
461 Logging.warn("Cannot paint layer, it is not registered: {0}", layer);
462 return;
463 }
464 MapViewRectangle clipBounds = getState().getViewArea(g.getClipBounds());
465 MapViewGraphics paintGraphics = new MapViewGraphics(this, g, clipBounds);
466
467 if (layer.getOpacity() < 1) {
468 g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, (float) layer.getOpacity()));
469 }
470 painter.paint(paintGraphics);
471 g.setPaintMode();
472 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException t) {
473 BugReport.intercept(t).put("layer", layer).warn();
474 }
475 }
476
477 /**
478 * Draw the component.
479 */
480 @Override
481 public void paint(Graphics g) {
482 try {
483 if (!prepareToDraw()) {
484 return;
485 }
486 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
487 BugReport.intercept(e).put("center", this::getCenter).warn();
488 return;
489 }
490
491 try {
492 drawMapContent((Graphics2D) g);
493 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
494 throw BugReport.intercept(e).put("visibleLayers", layerManager::getVisibleLayersInZOrder)
495 .put("temporaryLayers", temporaryLayers);
496 }
497 super.paint(g);
498 }
499
500 private void drawMapContent(Graphics2D g) {
501 // In HiDPI-mode, the Graphics g will have a transform that scales
502 // everything by a factor of 2.0 or so. At the same time, the value returned
503 // by getWidth()/getHeight will be reduced by that factor.
504 //
505 // This would work as intended, if we were to draw directly on g. But
506 // with a temporary buffer image, we need to move the scale transform to
507 // the Graphics of the buffer image and (in the end) transfer the content
508 // of the temporary buffer pixel by pixel onto g, without scaling.
509 // (Otherwise, we would upscale a small buffer image and the result would be
510 // blurry, with 2x2 pixel blocks.)
511 AffineTransform trOrig = g.getTransform();
512 double uiScaleX = g.getTransform().getScaleX();
513 double uiScaleY = g.getTransform().getScaleY();
514 // width/height in full-resolution screen pixels
515 int width = (int) Math.round(getWidth() * uiScaleX);
516 int height = (int) Math.round(getHeight() * uiScaleY);
517 // This transformation corresponds to the original transformation of g,
518 // except for the translation part. It will be applied to the temporary
519 // buffer images.
520 AffineTransform trDef = AffineTransform.getScaleInstance(uiScaleX, uiScaleY);
521 // The goal is to create the temporary image at full pixel resolution,
522 // so scale up the clip shape
523 Shape scaledClip = trDef.createTransformedShape(g.getClip());
524
525 List<Layer> visibleLayers = layerManager.getVisibleLayersInZOrder();
526
527 int nonChangedLayersCount = 0;
528 Set<MapViewPaintable> invalidated = invalidatedListener.collectInvalidatedLayers();
529 for (Layer l: visibleLayers) {
530 if (invalidated.contains(l)) {
531 break;
532 } else {
533 nonChangedLayersCount++;
534 }
535 }
536
537 boolean canUseBuffer = !paintPreferencesChanged.getAndSet(false)
538 && nonChangedLayers.size() <= nonChangedLayersCount
539 && lastViewID == getViewID()
540 && lastClipBounds.contains(g.getClipBounds())
541 && nonChangedLayers.equals(visibleLayers.subList(0, nonChangedLayers.size()));
542
543 if (null == offscreenBuffer || offscreenBuffer.getWidth() != width || offscreenBuffer.getHeight() != height) {
544 offscreenBuffer = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
545 }
546
547 if (!canUseBuffer || nonChangedLayersBuffer == null) {
548 if (null == nonChangedLayersBuffer
549 || nonChangedLayersBuffer.getWidth() != width || nonChangedLayersBuffer.getHeight() != height) {
550 nonChangedLayersBuffer = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
551 }
552 Graphics2D g2 = nonChangedLayersBuffer.createGraphics();
553 g2.setClip(scaledClip);
554 g2.setTransform(trDef);
555 g2.setColor(PaintColors.getBackgroundColor());
556 g2.fillRect(0, 0, width, height);
557
558 for (int i = 0; i < nonChangedLayersCount; i++) {
559 paintLayer(visibleLayers.get(i), g2);
560 }
561 } else {
562 // Maybe there were more unchanged layers then last time - draw them to buffer
563 if (nonChangedLayers.size() != nonChangedLayersCount) {
564 Graphics2D g2 = nonChangedLayersBuffer.createGraphics();
565 g2.setClip(scaledClip);
566 g2.setTransform(trDef);
567 for (int i = nonChangedLayers.size(); i < nonChangedLayersCount; i++) {
568 paintLayer(visibleLayers.get(i), g2);
569 }
570 }
571 }
572
573 nonChangedLayers.clear();
574 nonChangedLayers.addAll(visibleLayers.subList(0, nonChangedLayersCount));
575 lastViewID = getViewID();
576 lastClipBounds = g.getClipBounds();
577
578 Graphics2D tempG = offscreenBuffer.createGraphics();
579 tempG.setClip(scaledClip);
580 tempG.setTransform(new AffineTransform());
581 tempG.drawImage(nonChangedLayersBuffer, 0, 0, null);
582 tempG.setTransform(trDef);
583
584 for (int i = nonChangedLayersCount; i < visibleLayers.size(); i++) {
585 paintLayer(visibleLayers.get(i), tempG);
586 }
587
588 try {
589 drawTemporaryLayers(tempG, getLatLonBounds(new Rectangle(
590 (int) Math.round(g.getClipBounds().x * uiScaleX),
591 (int) Math.round(g.getClipBounds().y * uiScaleY))));
592 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
593 BugReport.intercept(e).put("temporaryLayers", temporaryLayers).warn();
594 }
595
596 // draw world borders
597 try {
598 drawWorldBorders(tempG);
599 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
600 // getProjection() needs to be inside lambda to catch errors.
601 BugReport.intercept(e).put("bounds", () -> getProjection().getWorldBoundsLatLon()).warn();
602 }
603
604 MapFrame map = MainApplication.getMap();
605 if (AutoFilterManager.getInstance().getCurrentAutoFilter() != null) {
606 AutoFilterManager.getInstance().drawOSDText(tempG);
607 } else if (MainApplication.isDisplayingMapView() && map.filterDialog != null) {
608 map.filterDialog.drawOSDText(tempG);
609 }
610
611 if (playHeadMarker != null) {
612 playHeadMarker.paint(tempG, this);
613 }
614
615 try {
616 g.setTransform(new AffineTransform(1, 0, 0, 1, trOrig.getTranslateX(), trOrig.getTranslateY()));
617 g.drawImage(offscreenBuffer, 0, 0, null);
618 } catch (ClassCastException e) {
619 // See #11002 and duplicate tickets. On Linux with Java >= 8 Many users face this error here:
620 //
621 // java.lang.ClassCastException: sun.awt.image.BufImgSurfaceData cannot be cast to sun.java2d.xr.XRSurfaceData
622 // at sun.java2d.xr.XRPMBlitLoops.cacheToTmpSurface(XRPMBlitLoops.java:145)
623 // at sun.java2d.xr.XrSwToPMBlit.Blit(XRPMBlitLoops.java:353)
624 // at sun.java2d.pipe.DrawImage.blitSurfaceData(DrawImage.java:959)
625 // at sun.java2d.pipe.DrawImage.renderImageCopy(DrawImage.java:577)
626 // at sun.java2d.pipe.DrawImage.copyImage(DrawImage.java:67)
627 // at sun.java2d.pipe.DrawImage.copyImage(DrawImage.java:1014)
628 // at sun.java2d.pipe.ValidatePipe.copyImage(ValidatePipe.java:186)
629 // at sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:3318)
630 // at sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:3296)
631 // at org.openstreetmap.josm.gui.MapView.paint(MapView.java:834)
632 //
633 // It seems to be this JDK bug, but Oracle does not seem to be fixing it:
634 // https://bugs.openjdk.java.net/browse/JDK-7172749
635 //
636 // According to bug reports it can happen for a variety of reasons such as:
637 // - long period of time
638 // - change of screen resolution
639 // - addition/removal of a secondary monitor
640 //
641 // But the application seems to work fine after, so let's just log the error
642 Logging.error(e);
643 } finally {
644 g.setTransform(trOrig);
645 }
646 }
647
648 private void drawTemporaryLayers(Graphics2D tempG, Bounds box) {
649 synchronized (temporaryLayers) {
650 for (MapViewPaintable mvp : temporaryLayers) {
651 try {
652 mvp.paint(tempG, this, box);
653 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
654 throw BugReport.intercept(e).put("mvp", mvp);
655 }
656 }
657 }
658 }
659
660 private void drawWorldBorders(Graphics2D tempG) {
661 tempG.setColor(Color.WHITE);
662 Bounds b = getProjection().getWorldBoundsLatLon();
663
664 int w = getWidth();
665 int h = getHeight();
666
667 // Work around OpenJDK having problems when drawing out of bounds
668 final Area border = getState().getArea(b);
669 // Make the viewport 1px larger in every direction to prevent an
670 // additional 1px border when zooming in
671 final Area viewport = new Area(new Rectangle(-1, -1, w + 2, h + 2));
672 border.intersect(viewport);
673 tempG.draw(border);
674 }
675
676 /**
677 * Sets up the viewport to prepare for drawing the view.
678 * @return <code>true</code> if the view can be drawn, <code>false</code> otherwise.
679 */
680 public boolean prepareToDraw() {
681 updateLocationState();
682 if (initialViewport != null) {
683 zoomTo(initialViewport);
684 initialViewport = null;
685 }
686
687 if (getCenter() == null)
688 return false; // no data loaded yet.
689
690 // if the position was remembered, we need to adjust center once before repainting
691 if (oldLoc != null && oldSize != null) {
692 Point l1 = getLocationOnScreen();
693 final EastNorth newCenter = new EastNorth(
694 getCenter().getX()+ (l1.x-oldLoc.x - (oldSize.width-getWidth())/2.0)*getScale(),
695 getCenter().getY()+ (oldLoc.y-l1.y + (oldSize.height-getHeight())/2.0)*getScale()
696 );
697 oldLoc = null; oldSize = null;
698 zoomTo(newCenter);
699 }
700
701 return true;
702 }
703
704 @Override
705 public void activeOrEditLayerChanged(ActiveLayerChangeEvent e) {
706 MapFrame map = MainApplication.getMap();
707 if (map != null) {
708 /* This only makes the buttons look disabled. Disabling the actions as well requires
709 * the user to re-select the tool after i.e. moving a layer. While testing I found
710 * that I switch layers and actions at the same time and it was annoying to mind the
711 * order. This way it works as visual clue for new users */
712 // FIXME: This does not belong here.
713 for (final AbstractButton b: map.allMapModeButtons) {
714 MapMode mode = (MapMode) b.getAction();
715 final boolean activeLayerSupported = mode.layerIsSupported(layerManager.getActiveLayer());
716 if (activeLayerSupported) {
717 MainApplication.registerActionShortcut(mode, mode.getShortcut()); //fix #6876
718 } else {
719 MainApplication.unregisterShortcut(mode.getShortcut());
720 }
721 b.setEnabled(activeLayerSupported);
722 }
723 }
724 // invalidate repaint cache. The layer order may have changed by this, so we invalidate every layer
725 getLayerManager().getLayers().forEach(invalidatedListener::invalidate);
726 AudioPlayer.reset();
727 }
728
729 /**
730 * Adds a new temporary layer.
731 * <p>
732 * A temporary layer is a layer that is painted above all normal layers. Layers are painted in the order they are added.
733 *
734 * @param mvp The layer to paint.
735 * @return <code>true</code> if the layer was added.
736 */
737 public boolean addTemporaryLayer(MapViewPaintable mvp) {
738 synchronized (temporaryLayers) {
739 boolean added = temporaryLayers.add(mvp);
740 if (added) {
741 invalidatedListener.addTo(mvp);
742 }
743 repaint();
744 return added;
745 }
746 }
747
748 /**
749 * Removes a layer previously added as temporary layer.
750 * @param mvp The layer to remove.
751 * @return <code>true</code> if that layer was removed.
752 */
753 public boolean removeTemporaryLayer(MapViewPaintable mvp) {
754 synchronized (temporaryLayers) {
755 boolean removed = temporaryLayers.remove(mvp);
756 if (removed) {
757 invalidatedListener.removeFrom(mvp);
758 }
759 repaint();
760 return removed;
761 }
762 }
763
764 /**
765 * Gets a list of temporary layers.
766 * @return The layers in the order they are added.
767 */
768 public List<MapViewPaintable> getTemporaryLayers() {
769 synchronized (temporaryLayers) {
770 return Collections.unmodifiableList(new ArrayList<>(temporaryLayers));
771 }
772 }
773
774 @Override
775 public void propertyChange(PropertyChangeEvent evt) {
776 if (evt.getPropertyName().equals(Layer.VISIBLE_PROP)) {
777 repaint();
778 } else if (evt.getPropertyName().equals(Layer.OPACITY_PROP) ||
779 evt.getPropertyName().equals(Layer.FILTER_STATE_PROP)) {
780 Layer l = (Layer) evt.getSource();
781 if (l.isVisible()) {
782 invalidatedListener.invalidate(l);
783 }
784 }
785 }
786
787 @Override
788 public void preferenceChanged(PreferenceChangeEvent e) {
789 paintPreferencesChanged.set(true);
790 }
791
792 private final transient DataSelectionListener repaintSelectionChangedListener = event -> repaint();
793
794 /**
795 * Destroy this map view panel. Should be called once when it is not needed any more.
796 */
797 public void destroy() {
798 layerManager.removeAndFireLayerChangeListener(this);
799 layerManager.removeActiveLayerChangeListener(this);
800 Config.getPref().removePreferenceChangeListener(this);
801 SelectionEventManager.getInstance().removeSelectionListener(repaintSelectionChangedListener);
802 MultipolygonCache.getInstance().clear();
803 if (mapMover != null) {
804 mapMover.destroy();
805 }
806 nonChangedLayers.clear();
807 synchronized (temporaryLayers) {
808 temporaryLayers.clear();
809 }
810 nonChangedLayersBuffer = null;
811 offscreenBuffer = null;
812 }
813
814 /**
815 * Get a string representation of all layers suitable for the {@code source} changeset tag.
816 * @return A String of sources separated by ';'
817 */
818 public String getLayerInformationForSourceTag() {
819 final Set<String> layerInfo = new TreeSet<>();
820 if (!layerManager.getLayersOfType(GpxLayer.class).isEmpty()) {
821 // no i18n for international values
822 layerInfo.add("survey");
823 }
824 for (final GeoImageLayer i : layerManager.getLayersOfType(GeoImageLayer.class)) {
825 if (i.isVisible()) {
826 layerInfo.add(i.getName());
827 }
828 }
829 for (final ImageryLayer i : layerManager.getLayersOfType(ImageryLayer.class)) {
830 if (i.isVisible()) {
831 layerInfo.add(ImageryInfo.ImageryType.BING.equals(i.getInfo().getImageryType()) ? "Bing" : i.getName());
832 }
833 }
834 return Utils.join("; ", layerInfo);
835 }
836
837 /**
838 * This is a listener that gets informed whenever repaint is called for this MapView.
839 * <p>
840 * This is the only safe method to find changes to the map view, since many components call MapView.repaint() directly.
841 * @author Michael Zangl
842 * @since 10600 (functional interface)
843 */
844 @FunctionalInterface
845 public interface RepaintListener {
846 /**
847 * Called when any repaint method is called (using default arguments if required).
848 * @param tm see {@link JComponent#repaint(long, int, int, int, int)}
849 * @param x see {@link JComponent#repaint(long, int, int, int, int)}
850 * @param y see {@link JComponent#repaint(long, int, int, int, int)}
851 * @param width see {@link JComponent#repaint(long, int, int, int, int)}
852 * @param height see {@link JComponent#repaint(long, int, int, int, int)}
853 */
854 void repaint(long tm, int x, int y, int width, int height);
855 }
856
857 private final transient CopyOnWriteArrayList<RepaintListener> repaintListeners = new CopyOnWriteArrayList<>();
858
859 /**
860 * Adds a listener that gets informed whenever repaint() is called for this class.
861 * @param l The listener.
862 */
863 public void addRepaintListener(RepaintListener l) {
864 repaintListeners.add(l);
865 }
866
867 /**
868 * Removes a registered repaint listener.
869 * @param l The listener.
870 */
871 public void removeRepaintListener(RepaintListener l) {
872 repaintListeners.remove(l);
873 }
874
875 @Override
876 public void repaint(long tm, int x, int y, int width, int height) {
877 // This is the main repaint method, all other methods are convenience methods and simply call this method.
878 // This is just an observation, not a must, but seems to be true for all implementations I found so far.
879 if (repaintListeners != null) {
880 // Might get called early in super constructor
881 for (RepaintListener l : repaintListeners) {
882 l.repaint(tm, x, y, width, height);
883 }
884 }
885 super.repaint(tm, x, y, width, height);
886 }
887
888 @Override
889 public void repaint() {
890 if (Logging.isTraceEnabled()) {
891 invalidatedListener.traceRandomRepaint();
892 }
893 super.repaint();
894 }
895
896 /**
897 * Returns the layer manager.
898 * @return the layer manager
899 * @since 10282
900 */
901 public final MainLayerManager getLayerManager() {
902 return layerManager;
903 }
904
905 /**
906 * Schedule a zoom to the given position on the next redraw.
907 * Temporary, may be removed without warning.
908 * @param viewportData the viewport to zoom to
909 * @since 10394
910 */
911 public void scheduleZoomTo(ViewportData viewportData) {
912 initialViewport = viewportData;
913 }
914
915 /**
916 * Returns the internal {@link MapMover}.
917 * @return the internal {@code MapMover}
918 * @since 13126
919 */
920 public final MapMover getMapMover() {
921 return mapMover;
922 }
923}
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