source: josm/trunk/src/org/openstreetmap/josm/gui/MapView.java@ 16225

Last change on this file since 16225 was 15717, checked in by simon04, 5 years ago

Java 8: use Collectors.joining
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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.concurrent.CopyOnWriteArrayList;
32import java.util.concurrent.atomic.AtomicBoolean;
33import java.util.stream.Collectors;
34
35import javax.swing.AbstractButton;
36import javax.swing.JComponent;
37import javax.swing.SwingUtilities;
38
39import org.openstreetmap.josm.actions.mapmode.MapMode;
40import org.openstreetmap.josm.data.Bounds;
41import org.openstreetmap.josm.data.ProjectionBounds;
42import org.openstreetmap.josm.data.ViewportData;
43import org.openstreetmap.josm.data.coor.EastNorth;
44import org.openstreetmap.josm.data.osm.DataSelectionListener;
45import org.openstreetmap.josm.data.osm.event.SelectionEventManager;
46import org.openstreetmap.josm.data.osm.visitor.paint.PaintColors;
47import org.openstreetmap.josm.data.osm.visitor.paint.Rendering;
48import org.openstreetmap.josm.data.osm.visitor.paint.relations.MultipolygonCache;
49import org.openstreetmap.josm.data.projection.ProjectionRegistry;
50import org.openstreetmap.josm.gui.MapViewState.MapViewRectangle;
51import org.openstreetmap.josm.gui.autofilter.AutoFilterManager;
52import org.openstreetmap.josm.gui.datatransfer.OsmTransferHandler;
53import org.openstreetmap.josm.gui.layer.Layer;
54import org.openstreetmap.josm.gui.layer.LayerManager;
55import org.openstreetmap.josm.gui.layer.LayerManager.LayerAddEvent;
56import org.openstreetmap.josm.gui.layer.LayerManager.LayerOrderChangeEvent;
57import org.openstreetmap.josm.gui.layer.LayerManager.LayerRemoveEvent;
58import org.openstreetmap.josm.gui.layer.MainLayerManager;
59import org.openstreetmap.josm.gui.layer.MainLayerManager.ActiveLayerChangeEvent;
60import org.openstreetmap.josm.gui.layer.MapViewGraphics;
61import org.openstreetmap.josm.gui.layer.MapViewPaintable;
62import org.openstreetmap.josm.gui.layer.MapViewPaintable.LayerPainter;
63import org.openstreetmap.josm.gui.layer.MapViewPaintable.MapViewEvent;
64import org.openstreetmap.josm.gui.layer.MapViewPaintable.PaintableInvalidationEvent;
65import org.openstreetmap.josm.gui.layer.MapViewPaintable.PaintableInvalidationListener;
66import org.openstreetmap.josm.gui.layer.OsmDataLayer;
67import org.openstreetmap.josm.gui.layer.markerlayer.PlayHeadMarker;
68import org.openstreetmap.josm.gui.mappaint.MapPaintStyles;
69import org.openstreetmap.josm.gui.mappaint.MapPaintStyles.MapPaintSylesUpdateListener;
70import org.openstreetmap.josm.gui.util.GuiHelper;
71import org.openstreetmap.josm.io.audio.AudioPlayer;
72import org.openstreetmap.josm.spi.preferences.Config;
73import org.openstreetmap.josm.spi.preferences.PreferenceChangeEvent;
74import org.openstreetmap.josm.spi.preferences.PreferenceChangedListener;
75import org.openstreetmap.josm.tools.JosmRuntimeException;
76import org.openstreetmap.josm.tools.Logging;
77import org.openstreetmap.josm.tools.Shortcut;
78import org.openstreetmap.josm.tools.bugreport.BugReport;
79
80/**
81 * This is a component used in the {@link MapFrame} for browsing the map. It use is to
82 * provide the MapMode's enough capabilities to operate.<br><br>
83 *
84 * {@code MapView} holds meta-data about the data set currently displayed, as scale level,
85 * center point viewed, what scrolling mode or editing mode is selected or with
86 * what projection the map is viewed etc..<br><br>
87 *
88 * {@code MapView} is able to administrate several layers.
89 *
90 * @author imi
91 */
92public class MapView extends NavigatableComponent
93implements PropertyChangeListener, PreferenceChangedListener,
94LayerManager.LayerChangeListener, MainLayerManager.ActiveLayerChangeListener {
95
96 static {
97 MapPaintStyles.addMapPaintSylesUpdateListener(new MapPaintSylesUpdateListener() {
98 @Override
99 public void mapPaintStylesUpdated() {
100 SwingUtilities.invokeLater(() ->
101 // Trigger a repaint of all data layers
102 MainApplication.getLayerManager().getLayers()
103 .stream()
104 .filter(layer -> layer instanceof OsmDataLayer)
105 .forEach(Layer::invalidate)
106 );
107 }
108
109 @Override
110 public void mapPaintStyleEntryUpdated(int index) {
111 mapPaintStylesUpdated();
112 }
113 });
114 }
115
116 /**
117 * An invalidation listener that simply calls repaint() for now.
118 * @author Michael Zangl
119 * @since 10271
120 */
121 private class LayerInvalidatedListener implements PaintableInvalidationListener {
122 private boolean ignoreRepaint;
123
124 private final Set<MapViewPaintable> invalidatedLayers = Collections.newSetFromMap(new IdentityHashMap<MapViewPaintable, Boolean>());
125
126 @Override
127 public void paintableInvalidated(PaintableInvalidationEvent event) {
128 invalidate(event.getLayer());
129 }
130
131 /**
132 * Invalidate contents and repaint map view
133 * @param mapViewPaintable invalidated layer
134 */
135 public synchronized void invalidate(MapViewPaintable mapViewPaintable) {
136 ignoreRepaint = true;
137 invalidatedLayers.add(mapViewPaintable);
138 repaint();
139 }
140
141 /**
142 * Temporary until all {@link MapViewPaintable}s support this.
143 * @param p The paintable.
144 */
145 public synchronized void addTo(MapViewPaintable p) {
146 p.addInvalidationListener(this);
147 }
148
149 /**
150 * Temporary until all {@link MapViewPaintable}s support this.
151 * @param p The paintable.
152 */
153 public synchronized void removeFrom(MapViewPaintable p) {
154 p.removeInvalidationListener(this);
155 invalidatedLayers.remove(p);
156 }
157
158 /**
159 * Attempts to trace repaints that did not originate from this listener. Good to find missed {@link MapView#repaint()}s in code.
160 */
161 protected synchronized void traceRandomRepaint() {
162 if (!ignoreRepaint) {
163 Logging.trace("Repaint: {0} from {1}", Thread.currentThread().getStackTrace()[3], Thread.currentThread());
164 }
165 ignoreRepaint = false;
166 }
167
168 /**
169 * Retrieves a set of all layers that have been marked as invalid since the last call to this method.
170 * @return The layers
171 */
172 protected synchronized Set<MapViewPaintable> collectInvalidatedLayers() {
173 Set<MapViewPaintable> layers = Collections.newSetFromMap(new IdentityHashMap<MapViewPaintable, Boolean>());
174 layers.addAll(invalidatedLayers);
175 invalidatedLayers.clear();
176 return layers;
177 }
178 }
179
180 /**
181 * A layer painter that issues a warning when being called.
182 * @author Michael Zangl
183 * @since 10474
184 */
185 private static class WarningLayerPainter implements LayerPainter {
186 boolean warningPrinted;
187 private final Layer layer;
188
189 WarningLayerPainter(Layer layer) {
190 this.layer = layer;
191 }
192
193 @Override
194 public void paint(MapViewGraphics graphics) {
195 if (!warningPrinted) {
196 Logging.debug("A layer triggered a repaint while being added: " + layer);
197 warningPrinted = true;
198 }
199 }
200
201 @Override
202 public void detachFromMapView(MapViewEvent event) {
203 // ignored
204 }
205 }
206
207 /**
208 * A list of all layers currently loaded. If we support multiple map views, this list may be different for each of them.
209 */
210 private final MainLayerManager layerManager;
211
212 /**
213 * The play head marker: there is only one of these so it isn't in any specific layer
214 */
215 public transient PlayHeadMarker playHeadMarker;
216
217 /**
218 * The last event performed by mouse.
219 */
220 public MouseEvent lastMEvent = new MouseEvent(this, 0, 0, 0, 0, 0, 0, false); // In case somebody reads it before first mouse move
221
222 /**
223 * Temporary layers (selection rectangle, etc.) that are never cached and
224 * drawn on top of regular layers.
225 * Access must be synchronized.
226 */
227 private final transient Set<MapViewPaintable> temporaryLayers = new LinkedHashSet<>();
228
229 private transient BufferedImage nonChangedLayersBuffer;
230 private transient BufferedImage offscreenBuffer;
231 // Layers that wasn't changed since last paint
232 private final transient List<Layer> nonChangedLayers = new ArrayList<>();
233 private int lastViewID;
234 private final AtomicBoolean paintPreferencesChanged = new AtomicBoolean(true);
235 private Rectangle lastClipBounds = new Rectangle();
236 private transient MapMover mapMover;
237
238 /**
239 * The listener that listens to invalidations of all layers.
240 */
241 private final LayerInvalidatedListener invalidatedListener = new LayerInvalidatedListener();
242
243 /**
244 * This is a map of all Layers that have been added to this view.
245 */
246 private final HashMap<Layer, LayerPainter> registeredLayers = new HashMap<>();
247
248 /**
249 * Constructs a new {@code MapView}.
250 * @param layerManager The layers to display.
251 * @param viewportData the initial viewport of the map. Can be null, then
252 * the viewport is derived from the layer data.
253 * @since 11713
254 */
255 public MapView(MainLayerManager layerManager, final ViewportData viewportData) {
256 this.layerManager = layerManager;
257 initialViewport = viewportData;
258 layerManager.addAndFireLayerChangeListener(this);
259 layerManager.addActiveLayerChangeListener(this);
260 Config.getPref().addPreferenceChangeListener(this);
261
262 addComponentListener(new ComponentAdapter() {
263 @Override
264 public void componentResized(ComponentEvent e) {
265 removeComponentListener(this);
266 mapMover = new MapMover(MapView.this);
267 }
268 });
269
270 // listens to selection changes to redraw the map
271 SelectionEventManager.getInstance().addSelectionListenerForEdt(repaintSelectionChangedListener);
272
273 //store the last mouse action
274 this.addMouseMotionListener(new MouseMotionListener() {
275 @Override
276 public void mouseDragged(MouseEvent e) {
277 mouseMoved(e);
278 }
279
280 @Override
281 public void mouseMoved(MouseEvent e) {
282 lastMEvent = e;
283 }
284 });
285 this.addMouseListener(new MouseAdapter() {
286 @Override
287 public void mousePressed(MouseEvent me) {
288 // focus the MapView component when mouse is pressed inside it
289 requestFocus();
290 }
291 });
292
293 setFocusTraversalKeysEnabled(!Shortcut.findShortcut(KeyEvent.VK_TAB, 0).isPresent());
294
295 for (JComponent c : getMapNavigationComponents(this)) {
296 add(c);
297 }
298 if (AutoFilterManager.PROP_AUTO_FILTER_ENABLED.get()) {
299 AutoFilterManager.getInstance().enableAutoFilterRule(AutoFilterManager.PROP_AUTO_FILTER_RULE.get());
300 }
301 setTransferHandler(new OsmTransferHandler());
302 }
303
304 /**
305 * Adds the map navigation components to a
306 * @param forMapView The map view to get the components for.
307 * @return A list containing the correctly positioned map navigation components.
308 */
309 public static List<? extends JComponent> getMapNavigationComponents(MapView forMapView) {
310 MapSlider zoomSlider = new MapSlider(forMapView);
311 Dimension size = zoomSlider.getPreferredSize();
312 zoomSlider.setSize(size);
313 zoomSlider.setLocation(3, 0);
314 zoomSlider.setFocusTraversalKeysEnabled(!Shortcut.findShortcut(KeyEvent.VK_TAB, 0).isPresent());
315
316 MapScaler scaler = new MapScaler(forMapView);
317 scaler.setPreferredLineLength(size.width - 10);
318 scaler.setSize(scaler.getPreferredSize());
319 scaler.setLocation(3, size.height);
320
321 return Arrays.asList(zoomSlider, scaler);
322 }
323
324 // remebered geometry of the component
325 private Dimension oldSize;
326 private Point oldLoc;
327
328 /**
329 * Call this method to keep map position on screen during next repaint
330 */
331 public void rememberLastPositionOnScreen() {
332 oldSize = getSize();
333 oldLoc = getLocationOnScreen();
334 }
335
336 @Override
337 public void layerAdded(LayerAddEvent e) {
338 try {
339 Layer layer = e.getAddedLayer();
340 registeredLayers.put(layer, new WarningLayerPainter(layer));
341 // Layers may trigger a redraw during this call if they open dialogs.
342 LayerPainter painter = layer.attachToMapView(new MapViewEvent(this, false));
343 if (!registeredLayers.containsKey(layer)) {
344 // The layer may have removed itself during attachToMapView()
345 Logging.warn("Layer was removed during attachToMapView()");
346 } else {
347 registeredLayers.put(layer, painter);
348
349 if (e.isZoomRequired()) {
350 ProjectionBounds viewProjectionBounds = layer.getViewProjectionBounds();
351 if (viewProjectionBounds != null) {
352 scheduleZoomTo(new ViewportData(viewProjectionBounds));
353 }
354 }
355
356 layer.addPropertyChangeListener(this);
357 ProjectionRegistry.addProjectionChangeListener(layer);
358 invalidatedListener.addTo(layer);
359 AudioPlayer.reset();
360
361 repaint();
362 }
363 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException t) {
364 throw BugReport.intercept(t).put("layer", e.getAddedLayer());
365 }
366 }
367
368 /**
369 * Replies true if the active data layer (edit layer) is drawable.
370 *
371 * @return true if the active data layer (edit layer) is drawable, false otherwise
372 */
373 public boolean isActiveLayerDrawable() {
374 return layerManager.getEditLayer() != null;
375 }
376
377 /**
378 * Replies true if the active data layer is visible.
379 *
380 * @return true if the active data layer is visible, false otherwise
381 */
382 public boolean isActiveLayerVisible() {
383 OsmDataLayer e = layerManager.getActiveDataLayer();
384 return e != null && e.isVisible();
385 }
386
387 @Override
388 public void layerRemoving(LayerRemoveEvent e) {
389 Layer layer = e.getRemovedLayer();
390
391 LayerPainter painter = registeredLayers.remove(layer);
392 if (painter == null) {
393 Logging.error("The painter for layer " + layer + " was not registered.");
394 return;
395 }
396 painter.detachFromMapView(new MapViewEvent(this, false));
397 ProjectionRegistry.removeProjectionChangeListener(layer);
398 layer.removePropertyChangeListener(this);
399 invalidatedListener.removeFrom(layer);
400 layer.destroy();
401 AudioPlayer.reset();
402
403 repaint();
404 }
405
406 private boolean virtualNodesEnabled;
407
408 /**
409 * Enables or disables drawing of the virtual nodes.
410 * @param enabled if virtual nodes are enabled
411 */
412 public void setVirtualNodesEnabled(boolean enabled) {
413 if (virtualNodesEnabled != enabled) {
414 virtualNodesEnabled = enabled;
415 repaint();
416 }
417 }
418
419 /**
420 * Checks if virtual nodes should be drawn. Default is <code>false</code>
421 * @return The virtual nodes property.
422 * @see Rendering#render
423 */
424 public boolean isVirtualNodesEnabled() {
425 return virtualNodesEnabled;
426 }
427
428 /**
429 * Moves the layer to the given new position. No event is fired, but repaints
430 * according to the new Z-Order of the layers.
431 *
432 * @param layer The layer to move
433 * @param pos The new position of the layer
434 */
435 public void moveLayer(Layer layer, int pos) {
436 layerManager.moveLayer(layer, pos);
437 }
438
439 @Override
440 public void layerOrderChanged(LayerOrderChangeEvent e) {
441 AudioPlayer.reset();
442 repaint();
443 }
444
445 /**
446 * Paints the given layer to the graphics object, using the current state of this map view.
447 * @param layer The layer to draw.
448 * @param g A graphics object. It should have the width and height of this component
449 * @throws IllegalArgumentException If the layer is not part of this map view.
450 * @since 11226
451 */
452 public void paintLayer(Layer layer, Graphics2D g) {
453 try {
454 LayerPainter painter = registeredLayers.get(layer);
455 if (painter == null) {
456 Logging.warn("Cannot paint layer, it is not registered: {0}", layer);
457 return;
458 }
459 MapViewRectangle clipBounds = getState().getViewArea(g.getClipBounds());
460 MapViewGraphics paintGraphics = new MapViewGraphics(this, g, clipBounds);
461
462 if (layer.getOpacity() < 1) {
463 g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, (float) layer.getOpacity()));
464 }
465 painter.paint(paintGraphics);
466 g.setPaintMode();
467 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException t) {
468 BugReport.intercept(t).put("layer", layer).warn();
469 }
470 }
471
472 /**
473 * Draw the component.
474 */
475 @Override
476 public void paint(Graphics g) {
477 try {
478 if (!prepareToDraw()) {
479 return;
480 }
481 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
482 BugReport.intercept(e).put("center", this::getCenter).warn();
483 return;
484 }
485
486 try {
487 drawMapContent((Graphics2D) g);
488 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
489 throw BugReport.intercept(e).put("visibleLayers", layerManager::getVisibleLayersInZOrder)
490 .put("temporaryLayers", temporaryLayers);
491 }
492 super.paint(g);
493 }
494
495 private void drawMapContent(Graphics2D g) {
496 // In HiDPI-mode, the Graphics g will have a transform that scales
497 // everything by a factor of 2.0 or so. At the same time, the value returned
498 // by getWidth()/getHeight will be reduced by that factor.
499 //
500 // This would work as intended, if we were to draw directly on g. But
501 // with a temporary buffer image, we need to move the scale transform to
502 // the Graphics of the buffer image and (in the end) transfer the content
503 // of the temporary buffer pixel by pixel onto g, without scaling.
504 // (Otherwise, we would upscale a small buffer image and the result would be
505 // blurry, with 2x2 pixel blocks.)
506 AffineTransform trOrig = g.getTransform();
507 double uiScaleX = g.getTransform().getScaleX();
508 double uiScaleY = g.getTransform().getScaleY();
509 // width/height in full-resolution screen pixels
510 int width = (int) Math.round(getWidth() * uiScaleX);
511 int height = (int) Math.round(getHeight() * uiScaleY);
512 // This transformation corresponds to the original transformation of g,
513 // except for the translation part. It will be applied to the temporary
514 // buffer images.
515 AffineTransform trDef = AffineTransform.getScaleInstance(uiScaleX, uiScaleY);
516 // The goal is to create the temporary image at full pixel resolution,
517 // so scale up the clip shape
518 Shape scaledClip = trDef.createTransformedShape(g.getClip());
519
520 List<Layer> visibleLayers = layerManager.getVisibleLayersInZOrder();
521
522 int nonChangedLayersCount = 0;
523 Set<MapViewPaintable> invalidated = invalidatedListener.collectInvalidatedLayers();
524 for (Layer l: visibleLayers) {
525 if (invalidated.contains(l)) {
526 break;
527 } else {
528 nonChangedLayersCount++;
529 }
530 }
531
532 boolean canUseBuffer = !paintPreferencesChanged.getAndSet(false)
533 && nonChangedLayers.size() <= nonChangedLayersCount
534 && lastViewID == getViewID()
535 && lastClipBounds.contains(g.getClipBounds())
536 && nonChangedLayers.equals(visibleLayers.subList(0, nonChangedLayers.size()));
537
538 if (null == offscreenBuffer || offscreenBuffer.getWidth() != width || offscreenBuffer.getHeight() != height) {
539 offscreenBuffer = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
540 }
541
542 if (!canUseBuffer || nonChangedLayersBuffer == null) {
543 if (null == nonChangedLayersBuffer
544 || nonChangedLayersBuffer.getWidth() != width || nonChangedLayersBuffer.getHeight() != height) {
545 nonChangedLayersBuffer = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
546 }
547 Graphics2D g2 = nonChangedLayersBuffer.createGraphics();
548 g2.setClip(scaledClip);
549 g2.setTransform(trDef);
550 g2.setColor(PaintColors.getBackgroundColor());
551 g2.fillRect(0, 0, width, height);
552
553 for (int i = 0; i < nonChangedLayersCount; i++) {
554 paintLayer(visibleLayers.get(i), g2);
555 }
556 } else {
557 // Maybe there were more unchanged layers then last time - draw them to buffer
558 if (nonChangedLayers.size() != nonChangedLayersCount) {
559 Graphics2D g2 = nonChangedLayersBuffer.createGraphics();
560 g2.setClip(scaledClip);
561 g2.setTransform(trDef);
562 for (int i = nonChangedLayers.size(); i < nonChangedLayersCount; i++) {
563 paintLayer(visibleLayers.get(i), g2);
564 }
565 }
566 }
567
568 nonChangedLayers.clear();
569 nonChangedLayers.addAll(visibleLayers.subList(0, nonChangedLayersCount));
570 lastViewID = getViewID();
571 lastClipBounds = g.getClipBounds();
572
573 Graphics2D tempG = offscreenBuffer.createGraphics();
574 tempG.setClip(scaledClip);
575 tempG.setTransform(new AffineTransform());
576 tempG.drawImage(nonChangedLayersBuffer, 0, 0, null);
577 tempG.setTransform(trDef);
578
579 for (int i = nonChangedLayersCount; i < visibleLayers.size(); i++) {
580 paintLayer(visibleLayers.get(i), tempG);
581 }
582
583 try {
584 drawTemporaryLayers(tempG, getLatLonBounds(new Rectangle(
585 (int) Math.round(g.getClipBounds().x * uiScaleX),
586 (int) Math.round(g.getClipBounds().y * uiScaleY))));
587 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
588 BugReport.intercept(e).put("temporaryLayers", temporaryLayers).warn();
589 }
590
591 // draw world borders
592 try {
593 drawWorldBorders(tempG);
594 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
595 // getProjection() needs to be inside lambda to catch errors.
596 BugReport.intercept(e).put("bounds", () -> getProjection().getWorldBoundsLatLon()).warn();
597 }
598
599 MapFrame map = MainApplication.getMap();
600 if (AutoFilterManager.getInstance().getCurrentAutoFilter() != null) {
601 AutoFilterManager.getInstance().drawOSDText(tempG);
602 } else if (MainApplication.isDisplayingMapView() && map.filterDialog != null) {
603 map.filterDialog.drawOSDText(tempG);
604 }
605
606 if (playHeadMarker != null) {
607 playHeadMarker.paint(tempG, this);
608 }
609
610 try {
611 g.setTransform(new AffineTransform(1, 0, 0, 1, trOrig.getTranslateX(), trOrig.getTranslateY()));
612 g.drawImage(offscreenBuffer, 0, 0, null);
613 } catch (ClassCastException e) {
614 // See #11002 and duplicate tickets. On Linux with Java >= 8 Many users face this error here:
615 //
616 // java.lang.ClassCastException: sun.awt.image.BufImgSurfaceData cannot be cast to sun.java2d.xr.XRSurfaceData
617 // at sun.java2d.xr.XRPMBlitLoops.cacheToTmpSurface(XRPMBlitLoops.java:145)
618 // at sun.java2d.xr.XrSwToPMBlit.Blit(XRPMBlitLoops.java:353)
619 // at sun.java2d.pipe.DrawImage.blitSurfaceData(DrawImage.java:959)
620 // at sun.java2d.pipe.DrawImage.renderImageCopy(DrawImage.java:577)
621 // at sun.java2d.pipe.DrawImage.copyImage(DrawImage.java:67)
622 // at sun.java2d.pipe.DrawImage.copyImage(DrawImage.java:1014)
623 // at sun.java2d.pipe.ValidatePipe.copyImage(ValidatePipe.java:186)
624 // at sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:3318)
625 // at sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:3296)
626 // at org.openstreetmap.josm.gui.MapView.paint(MapView.java:834)
627 //
628 // It seems to be this JDK bug, but Oracle does not seem to be fixing it:
629 // https://bugs.openjdk.java.net/browse/JDK-7172749
630 //
631 // According to bug reports it can happen for a variety of reasons such as:
632 // - long period of time
633 // - change of screen resolution
634 // - addition/removal of a secondary monitor
635 //
636 // But the application seems to work fine after, so let's just log the error
637 Logging.error(e);
638 } finally {
639 g.setTransform(trOrig);
640 }
641 }
642
643 private void drawTemporaryLayers(Graphics2D tempG, Bounds box) {
644 synchronized (temporaryLayers) {
645 for (MapViewPaintable mvp : temporaryLayers) {
646 try {
647 mvp.paint(tempG, this, box);
648 } catch (JosmRuntimeException | IllegalArgumentException | IllegalStateException e) {
649 throw BugReport.intercept(e).put("mvp", mvp);
650 }
651 }
652 }
653 }
654
655 private void drawWorldBorders(Graphics2D tempG) {
656 tempG.setColor(Color.WHITE);
657 Bounds b = getProjection().getWorldBoundsLatLon();
658
659 int w = getWidth();
660 int h = getHeight();
661
662 // Work around OpenJDK having problems when drawing out of bounds
663 final Area border = getState().getArea(b);
664 // Make the viewport 1px larger in every direction to prevent an
665 // additional 1px border when zooming in
666 final Area viewport = new Area(new Rectangle(-1, -1, w + 2, h + 2));
667 border.intersect(viewport);
668 tempG.draw(border);
669 }
670
671 /**
672 * Sets up the viewport to prepare for drawing the view.
673 * @return <code>true</code> if the view can be drawn, <code>false</code> otherwise.
674 */
675 public boolean prepareToDraw() {
676 updateLocationState();
677 if (initialViewport != null) {
678 zoomTo(initialViewport);
679 initialViewport = null;
680 }
681
682 EastNorth oldCenter = getCenter();
683 if (oldCenter == null)
684 return false; // no data loaded yet.
685
686 // if the position was remembered, we need to adjust center once before repainting
687 if (oldLoc != null && oldSize != null) {
688 Point l1 = getLocationOnScreen();
689 final EastNorth newCenter = new EastNorth(
690 oldCenter.getX()+ (l1.x-oldLoc.x - (oldSize.width-getWidth())/2.0)*getScale(),
691 oldCenter.getY()+ (oldLoc.y-l1.y + (oldSize.height-getHeight())/2.0)*getScale()
692 );
693 oldLoc = null; oldSize = null;
694 zoomTo(newCenter);
695 }
696
697 return true;
698 }
699
700 @Override
701 public void activeOrEditLayerChanged(ActiveLayerChangeEvent e) {
702 MapFrame map = MainApplication.getMap();
703 if (map != null) {
704 /* This only makes the buttons look disabled. Disabling the actions as well requires
705 * the user to re-select the tool after i.e. moving a layer. While testing I found
706 * that I switch layers and actions at the same time and it was annoying to mind the
707 * order. This way it works as visual clue for new users */
708 // FIXME: This does not belong here.
709 for (final AbstractButton b: map.allMapModeButtons) {
710 MapMode mode = (MapMode) b.getAction();
711 final boolean activeLayerSupported = mode.layerIsSupported(layerManager.getActiveLayer());
712 if (activeLayerSupported) {
713 MainApplication.registerActionShortcut(mode, mode.getShortcut()); //fix #6876
714 } else {
715 MainApplication.unregisterShortcut(mode.getShortcut());
716 }
717 b.setEnabled(activeLayerSupported);
718 }
719 }
720 // invalidate repaint cache. The layer order may have changed by this, so we invalidate every layer
721 getLayerManager().getLayers().forEach(invalidatedListener::invalidate);
722 AudioPlayer.reset();
723 }
724
725 /**
726 * Adds a new temporary layer.
727 * <p>
728 * A temporary layer is a layer that is painted above all normal layers. Layers are painted in the order they are added.
729 *
730 * @param mvp The layer to paint.
731 * @return <code>true</code> if the layer was added.
732 */
733 public boolean addTemporaryLayer(MapViewPaintable mvp) {
734 synchronized (temporaryLayers) {
735 boolean added = temporaryLayers.add(mvp);
736 if (added) {
737 invalidatedListener.addTo(mvp);
738 }
739 repaint();
740 return added;
741 }
742 }
743
744 /**
745 * Removes a layer previously added as temporary layer.
746 * @param mvp The layer to remove.
747 * @return <code>true</code> if that layer was removed.
748 */
749 public boolean removeTemporaryLayer(MapViewPaintable mvp) {
750 synchronized (temporaryLayers) {
751 boolean removed = temporaryLayers.remove(mvp);
752 if (removed) {
753 invalidatedListener.removeFrom(mvp);
754 }
755 repaint();
756 return removed;
757 }
758 }
759
760 /**
761 * Gets a list of temporary layers.
762 * @return The layers in the order they are added.
763 */
764 public List<MapViewPaintable> getTemporaryLayers() {
765 synchronized (temporaryLayers) {
766 return Collections.unmodifiableList(new ArrayList<>(temporaryLayers));
767 }
768 }
769
770 @Override
771 public void propertyChange(PropertyChangeEvent evt) {
772 if (evt.getPropertyName().equals(Layer.VISIBLE_PROP)) {
773 repaint();
774 } else if (evt.getPropertyName().equals(Layer.OPACITY_PROP) ||
775 evt.getPropertyName().equals(Layer.FILTER_STATE_PROP)) {
776 Layer l = (Layer) evt.getSource();
777 if (l.isVisible()) {
778 invalidatedListener.invalidate(l);
779 }
780 }
781 }
782
783 @Override
784 public void preferenceChanged(PreferenceChangeEvent e) {
785 paintPreferencesChanged.set(true);
786 }
787
788 private final transient DataSelectionListener repaintSelectionChangedListener = event -> repaint();
789
790 /**
791 * Destroy this map view panel. Should be called once when it is not needed any more.
792 */
793 public void destroy() {
794 layerManager.removeAndFireLayerChangeListener(this);
795 layerManager.removeActiveLayerChangeListener(this);
796 Config.getPref().removePreferenceChangeListener(this);
797 SelectionEventManager.getInstance().removeSelectionListener(repaintSelectionChangedListener);
798 MultipolygonCache.getInstance().clear();
799 if (mapMover != null) {
800 mapMover.destroy();
801 }
802 nonChangedLayers.clear();
803 synchronized (temporaryLayers) {
804 temporaryLayers.clear();
805 }
806 nonChangedLayersBuffer = null;
807 offscreenBuffer = null;
808 setTransferHandler(null);
809 GuiHelper.destroyComponents(this, false);
810 }
811
812 /**
813 * Get a string representation of all layers suitable for the {@code source} changeset tag.
814 * @return A String of sources separated by ';'
815 */
816 public String getLayerInformationForSourceTag() {
817 return layerManager.getVisibleLayersInZOrder().stream()
818 .filter(layer -> layer.getChangesetSourceTag() != null && !layer.getChangesetSourceTag().trim().isEmpty())
819 .map(layer -> layer.getChangesetSourceTag().trim())
820 .distinct()
821 .collect(Collectors.joining("; "));
822 }
823
824 /**
825 * This is a listener that gets informed whenever repaint is called for this MapView.
826 * <p>
827 * This is the only safe method to find changes to the map view, since many components call MapView.repaint() directly.
828 * @author Michael Zangl
829 * @since 10600 (functional interface)
830 */
831 @FunctionalInterface
832 public interface RepaintListener {
833 /**
834 * Called when any repaint method is called (using default arguments if required).
835 * @param tm see {@link JComponent#repaint(long, int, int, int, int)}
836 * @param x see {@link JComponent#repaint(long, int, int, int, int)}
837 * @param y see {@link JComponent#repaint(long, int, int, int, int)}
838 * @param width see {@link JComponent#repaint(long, int, int, int, int)}
839 * @param height see {@link JComponent#repaint(long, int, int, int, int)}
840 */
841 void repaint(long tm, int x, int y, int width, int height);
842 }
843
844 private final transient CopyOnWriteArrayList<RepaintListener> repaintListeners = new CopyOnWriteArrayList<>();
845
846 /**
847 * Adds a listener that gets informed whenever repaint() is called for this class.
848 * @param l The listener.
849 */
850 public void addRepaintListener(RepaintListener l) {
851 repaintListeners.add(l);
852 }
853
854 /**
855 * Removes a registered repaint listener.
856 * @param l The listener.
857 */
858 public void removeRepaintListener(RepaintListener l) {
859 repaintListeners.remove(l);
860 }
861
862 @Override
863 public void repaint(long tm, int x, int y, int width, int height) {
864 // This is the main repaint method, all other methods are convenience methods and simply call this method.
865 // This is just an observation, not a must, but seems to be true for all implementations I found so far.
866 if (repaintListeners != null) {
867 // Might get called early in super constructor
868 for (RepaintListener l : repaintListeners) {
869 l.repaint(tm, x, y, width, height);
870 }
871 }
872 super.repaint(tm, x, y, width, height);
873 }
874
875 @Override
876 public void repaint() {
877 if (Logging.isTraceEnabled()) {
878 invalidatedListener.traceRandomRepaint();
879 }
880 super.repaint();
881 }
882
883 /**
884 * Returns the layer manager.
885 * @return the layer manager
886 * @since 10282
887 */
888 public final MainLayerManager getLayerManager() {
889 return layerManager;
890 }
891
892 /**
893 * Schedule a zoom to the given position on the next redraw.
894 * Temporary, may be removed without warning.
895 * @param viewportData the viewport to zoom to
896 * @since 10394
897 */
898 public void scheduleZoomTo(ViewportData viewportData) {
899 initialViewport = viewportData;
900 }
901
902 /**
903 * Returns the internal {@link MapMover}.
904 * @return the internal {@code MapMover}
905 * @since 13126
906 */
907 public final MapMover getMapMover() {
908 return mapMover;
909 }
910}
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