001// License: GPL. For details, see LICENSE file. 002package org.openstreetmap.josm.actions.mapmode; 003 004import static org.openstreetmap.josm.gui.help.HelpUtil.ht; 005import static org.openstreetmap.josm.tools.I18n.tr; 006import static org.openstreetmap.josm.tools.I18n.trn; 007 008import java.awt.Cursor; 009import java.awt.Point; 010import java.awt.Rectangle; 011import java.awt.event.ActionEvent; 012import java.awt.event.ActionListener; 013import java.awt.event.KeyEvent; 014import java.awt.event.MouseEvent; 015import java.awt.geom.Point2D; 016import java.util.Collection; 017import java.util.Collections; 018import java.util.HashSet; 019import java.util.Iterator; 020import java.util.LinkedList; 021import java.util.Set; 022 023import javax.swing.JOptionPane; 024 025import org.openstreetmap.josm.Main; 026import org.openstreetmap.josm.actions.MergeNodesAction; 027import org.openstreetmap.josm.command.AddCommand; 028import org.openstreetmap.josm.command.ChangeCommand; 029import org.openstreetmap.josm.command.Command; 030import org.openstreetmap.josm.command.MoveCommand; 031import org.openstreetmap.josm.command.RotateCommand; 032import org.openstreetmap.josm.command.ScaleCommand; 033import org.openstreetmap.josm.command.SequenceCommand; 034import org.openstreetmap.josm.data.coor.EastNorth; 035import org.openstreetmap.josm.data.coor.LatLon; 036import org.openstreetmap.josm.data.osm.DataSet; 037import org.openstreetmap.josm.data.osm.Node; 038import org.openstreetmap.josm.data.osm.OsmPrimitive; 039import org.openstreetmap.josm.data.osm.Way; 040import org.openstreetmap.josm.data.osm.WaySegment; 041import org.openstreetmap.josm.data.osm.visitor.AllNodesVisitor; 042import org.openstreetmap.josm.data.osm.visitor.paint.WireframeMapRenderer; 043import org.openstreetmap.josm.gui.ExtendedDialog; 044import org.openstreetmap.josm.gui.MapFrame; 045import org.openstreetmap.josm.gui.MapView; 046import org.openstreetmap.josm.gui.SelectionManager; 047import org.openstreetmap.josm.gui.SelectionManager.SelectionEnded; 048import org.openstreetmap.josm.gui.layer.Layer; 049import org.openstreetmap.josm.gui.layer.OsmDataLayer; 050import org.openstreetmap.josm.gui.util.GuiHelper; 051import org.openstreetmap.josm.gui.util.KeyPressReleaseListener; 052import org.openstreetmap.josm.gui.util.ModifierListener; 053import org.openstreetmap.josm.tools.ImageProvider; 054import org.openstreetmap.josm.tools.Pair; 055import org.openstreetmap.josm.tools.Shortcut; 056 057/** 058 * Move is an action that can move all kind of OsmPrimitives (except keys for now). 059 * 060 * If an selected object is under the mouse when dragging, move all selected objects. 061 * If an unselected object is under the mouse when dragging, it becomes selected 062 * and will be moved. 063 * If no object is under the mouse, move all selected objects (if any) 064 * 065 * On Mac OS X, Ctrl + mouse button 1 simulates right click (map move), so the 066 * feature "selection remove" is disabled on this platform. 067 */ 068public class SelectAction extends MapMode implements ModifierListener, KeyPressReleaseListener, SelectionEnded { 069 070 /** 071 * Select action mode. 072 * @since 7543 073 */ 074 public enum Mode { 075 /** "MOVE" means either dragging or select if no mouse movement occurs (i.e. just clicking) */ 076 MOVE, 077 /** "ROTATE" allows to apply a rotation transformation on the selected object (see {@link RotateCommand}) */ 078 ROTATE, 079 /** "SCALE" allows to apply a scaling transformation on the selected object (see {@link ScaleCommand}) */ 080 SCALE, 081 /** "SELECT" means the selection rectangle */ 082 SELECT 083 } 084 085 // contains all possible cases the cursor can be in the SelectAction 086 private static enum SelectActionCursor { 087 rect("normal", /* ICON(cursor/modifier/) */ "selection"), 088 rect_add("normal", /* ICON(cursor/modifier/) */ "select_add"), 089 rect_rm("normal", /* ICON(cursor/modifier/) */ "select_remove"), 090 way("normal", /* ICON(cursor/modifier/) */ "select_way"), 091 way_add("normal", /* ICON(cursor/modifier/) */ "select_way_add"), 092 way_rm("normal", /* ICON(cursor/modifier/) */ "select_way_remove"), 093 node("normal", /* ICON(cursor/modifier/) */ "select_node"), 094 node_add("normal", /* ICON(cursor/modifier/) */ "select_node_add"), 095 node_rm("normal", /* ICON(cursor/modifier/) */ "select_node_remove"), 096 virtual_node("normal", /* ICON(cursor/modifier/) */ "addnode"), 097 scale(/* ICON(cursor/) */ "scale", null), 098 rotate(/* ICON(cursor/) */ "rotate", null), 099 merge(/* ICON(cursor/) */ "crosshair", null), 100 lasso("normal", /* ICON(cursor/modifier/) */ "rope"), 101 merge_to_node("crosshair", /* ICON(cursor/modifier/) */ "joinnode"), 102 move(Cursor.MOVE_CURSOR); 103 104 private final Cursor c; 105 private SelectActionCursor(String main, String sub) { 106 c = ImageProvider.getCursor(main, sub); 107 } 108 private SelectActionCursor(int systemCursor) { 109 c = Cursor.getPredefinedCursor(systemCursor); 110 } 111 public Cursor cursor() { 112 return c; 113 } 114 } 115 116 private boolean lassoMode = false; 117 public boolean repeatedKeySwitchLassoOption; 118 119 // Cache previous mouse event (needed when only the modifier keys are 120 // pressed but the mouse isn't moved) 121 private MouseEvent oldEvent = null; 122 123 private Mode mode = null; 124 private final SelectionManager selectionManager; 125 private boolean cancelDrawMode = false; 126 private boolean drawTargetHighlight; 127 private boolean didMouseDrag = false; 128 /** 129 * The component this SelectAction is associated with. 130 */ 131 private final MapView mv; 132 /** 133 * The old cursor before the user pressed the mouse button. 134 */ 135 private Point startingDraggingPos; 136 /** 137 * point where user pressed the mouse to start movement 138 */ 139 EastNorth startEN; 140 /** 141 * The last known position of the mouse. 142 */ 143 private Point lastMousePos; 144 /** 145 * The time of the user mouse down event. 146 */ 147 private long mouseDownTime = 0; 148 /** 149 * The pressed button of the user mouse down event. 150 */ 151 private int mouseDownButton = 0; 152 /** 153 * The time of the user mouse down event. 154 */ 155 private long mouseReleaseTime = 0; 156 /** 157 * The time which needs to pass between click and release before something 158 * counts as a move, in milliseconds 159 */ 160 private int initialMoveDelay; 161 /** 162 * The screen distance which needs to be travelled before something 163 * counts as a move, in pixels 164 */ 165 private int initialMoveThreshold; 166 private boolean initialMoveThresholdExceeded = false; 167 168 /** 169 * elements that have been highlighted in the previous iteration. Used 170 * to remove the highlight from them again as otherwise the whole data 171 * set would have to be checked. 172 */ 173 private Set<OsmPrimitive> oldHighlights = new HashSet<>(); 174 175 /** 176 * Create a new SelectAction 177 * @param mapFrame The MapFrame this action belongs to. 178 */ 179 public SelectAction(MapFrame mapFrame) { 180 super(tr("Select"), "move/move", tr("Select, move, scale and rotate objects"), 181 Shortcut.registerShortcut("mapmode:select", tr("Mode: {0}", tr("Select")), KeyEvent.VK_S, Shortcut.DIRECT), 182 mapFrame, 183 ImageProvider.getCursor("normal", "selection")); 184 mv = mapFrame.mapView; 185 putValue("help", ht("/Action/Select")); 186 selectionManager = new SelectionManager(this, false, mv); 187 } 188 189 @Override 190 public void enterMode() { 191 super.enterMode(); 192 mv.addMouseListener(this); 193 mv.addMouseMotionListener(this); 194 mv.setVirtualNodesEnabled(Main.pref.getInteger("mappaint.node.virtual-size", 8) != 0); 195 drawTargetHighlight = Main.pref.getBoolean("draw.target-highlight", true); 196 initialMoveDelay = Main.pref.getInteger("edit.initial-move-delay", 200); 197 initialMoveThreshold = Main.pref.getInteger("edit.initial-move-threshold", 5); 198 repeatedKeySwitchLassoOption = Main.pref.getBoolean("mappaint.select.toggle-lasso-on-repeated-S", true); 199 cycleManager.init(); 200 virtualManager.init(); 201 // This is required to update the cursors when ctrl/shift/alt is pressed 202 Main.map.keyDetector.addModifierListener(this); 203 Main.map.keyDetector.addKeyListener(this); 204 } 205 206 @Override 207 public void exitMode() { 208 super.exitMode(); 209 selectionManager.unregister(mv); 210 mv.removeMouseListener(this); 211 mv.removeMouseMotionListener(this); 212 mv.setVirtualNodesEnabled(false); 213 Main.map.keyDetector.removeModifierListener(this); 214 Main.map.keyDetector.removeKeyListener(this); 215 removeHighlighting(); 216 } 217 218 int previousModifiers; 219 220 @Override 221 public void modifiersChanged(int modifiers) { 222 if (!Main.isDisplayingMapView() || oldEvent==null) return; 223 if(giveUserFeedback(oldEvent, modifiers)) { 224 mv.repaint(); 225 } 226 } 227 228 /** 229 * handles adding highlights and updating the cursor for the given mouse event. 230 * Please note that the highlighting for merging while moving is handled via mouseDragged. 231 * @param e {@code MouseEvent} which should be used as base for the feedback 232 * @return {@code true} if repaint is required 233 */ 234 private boolean giveUserFeedback(MouseEvent e) { 235 return giveUserFeedback(e, e.getModifiers()); 236 } 237 238 /** 239 * handles adding highlights and updating the cursor for the given mouse event. 240 * Please note that the highlighting for merging while moving is handled via mouseDragged. 241 * @param e {@code MouseEvent} which should be used as base for the feedback 242 * @param modifiers define custom keyboard modifiers if the ones from MouseEvent are outdated or similar 243 * @return {@code true} if repaint is required 244 */ 245 private boolean giveUserFeedback(MouseEvent e, int modifiers) { 246 Collection<OsmPrimitive> c = asColl( 247 mv.getNearestNodeOrWay(e.getPoint(), mv.isSelectablePredicate, true)); 248 249 updateKeyModifiers(modifiers); 250 determineMapMode(!c.isEmpty()); 251 252 HashSet<OsmPrimitive> newHighlights = new HashSet<>(); 253 254 virtualManager.clear(); 255 if(mode == Mode.MOVE) { 256 if (!dragInProgress() && virtualManager.activateVirtualNodeNearPoint(e.getPoint())) { 257 DataSet ds = getCurrentDataSet(); 258 if (ds != null && drawTargetHighlight) { 259 ds.setHighlightedVirtualNodes(virtualManager.virtualWays); 260 } 261 mv.setNewCursor(SelectActionCursor.virtual_node.cursor(), this); 262 // don't highlight anything else if a virtual node will be 263 return repaintIfRequired(newHighlights); 264 } 265 } 266 267 mv.setNewCursor(getCursor(c), this); 268 269 // return early if there can't be any highlights 270 if(!drawTargetHighlight || mode != Mode.MOVE || c.isEmpty()) 271 return repaintIfRequired(newHighlights); 272 273 // CTRL toggles selection, but if while dragging CTRL means merge 274 final boolean isToggleMode = ctrl && !dragInProgress(); 275 for(OsmPrimitive x : c) { 276 // only highlight primitives that will change the selection 277 // when clicked. I.e. don't highlight selected elements unless 278 // we are in toggle mode. 279 if(isToggleMode || !x.isSelected()) { 280 newHighlights.add(x); 281 } 282 } 283 return repaintIfRequired(newHighlights); 284 } 285 286 /** 287 * works out which cursor should be displayed for most of SelectAction's 288 * features. The only exception is the "move" cursor when actually dragging 289 * primitives. 290 * @param nearbyStuff primitives near the cursor 291 * @return the cursor that should be displayed 292 */ 293 private Cursor getCursor(Collection<OsmPrimitive> nearbyStuff) { 294 String c = "rect"; 295 switch(mode) { 296 case MOVE: 297 if(virtualManager.hasVirtualNode()) { 298 c = "virtual_node"; 299 break; 300 } 301 final Iterator<OsmPrimitive> it = nearbyStuff.iterator(); 302 final OsmPrimitive osm = it.hasNext() ? it.next() : null; 303 304 if(dragInProgress()) { 305 // only consider merge if ctrl is pressed and there are nodes in 306 // the selection that could be merged 307 if(!ctrl || getCurrentDataSet().getSelectedNodes().isEmpty()) { 308 c = "move"; 309 break; 310 } 311 // only show merge to node cursor if nearby node and that node is currently 312 // not being dragged 313 final boolean hasTarget = osm instanceof Node && !osm.isSelected(); 314 c = hasTarget ? "merge_to_node" : "merge"; 315 break; 316 } 317 318 c = (osm instanceof Node) ? "node" : c; 319 c = (osm instanceof Way) ? "way" : c; 320 if(shift) { 321 c += "_add"; 322 } else if(ctrl) { 323 c += osm == null || osm.isSelected() ? "_rm" : "_add"; 324 } 325 break; 326 case ROTATE: 327 c = "rotate"; 328 break; 329 case SCALE: 330 c = "scale"; 331 break; 332 case SELECT: 333 if (lassoMode) { 334 c = "lasso"; 335 } else { 336 c = "rect" + (shift ? "_add" : (ctrl && !Main.isPlatformOsx() ? "_rm" : "")); 337 } 338 break; 339 } 340 return SelectActionCursor.valueOf(c).cursor(); 341 } 342 343 /** 344 * Removes all existing highlights. 345 * @return true if a repaint is required 346 */ 347 private boolean removeHighlighting() { 348 boolean needsRepaint = false; 349 DataSet ds = getCurrentDataSet(); 350 if(ds != null && !ds.getHighlightedVirtualNodes().isEmpty()) { 351 needsRepaint = true; 352 ds.clearHighlightedVirtualNodes(); 353 } 354 if(oldHighlights.isEmpty()) 355 return needsRepaint; 356 357 for(OsmPrimitive prim : oldHighlights) { 358 prim.setHighlighted(false); 359 } 360 oldHighlights = new HashSet<>(); 361 return true; 362 } 363 364 private boolean repaintIfRequired(Set<OsmPrimitive> newHighlights) { 365 if(!drawTargetHighlight) 366 return false; 367 368 boolean needsRepaint = false; 369 for(OsmPrimitive x : newHighlights) { 370 if(oldHighlights.contains(x)) { 371 continue; 372 } 373 needsRepaint = true; 374 x.setHighlighted(true); 375 } 376 oldHighlights.removeAll(newHighlights); 377 for(OsmPrimitive x : oldHighlights) { 378 x.setHighlighted(false); 379 needsRepaint = true; 380 } 381 oldHighlights = newHighlights; 382 return needsRepaint; 383 } 384 385 /** 386 * Look, whether any object is selected. If not, select the nearest node. 387 * If there are no nodes in the dataset, do nothing. 388 * 389 * If the user did not press the left mouse button, do nothing. 390 * 391 * Also remember the starting position of the movement and change the mouse 392 * cursor to movement. 393 */ 394 @Override 395 public void mousePressed(MouseEvent e) { 396 mouseDownButton = e.getButton(); 397 // return early 398 if (!mv.isActiveLayerVisible() || !(Boolean) this.getValue("active") || mouseDownButton != MouseEvent.BUTTON1) 399 return; 400 401 // left-button mouse click only is processed here 402 403 // request focus in order to enable the expected keyboard shortcuts 404 mv.requestFocus(); 405 406 // update which modifiers are pressed (shift, alt, ctrl) 407 updateKeyModifiers(e); 408 409 // We don't want to change to draw tool if the user tries to (de)select 410 // stuff but accidentally clicks in an empty area when selection is empty 411 cancelDrawMode = (shift || ctrl); 412 didMouseDrag = false; 413 initialMoveThresholdExceeded = false; 414 mouseDownTime = System.currentTimeMillis(); 415 lastMousePos = e.getPoint(); 416 startEN = mv.getEastNorth(lastMousePos.x,lastMousePos.y); 417 418 // primitives under cursor are stored in c collection 419 420 OsmPrimitive nearestPrimitive = mv.getNearestNodeOrWay(e.getPoint(), mv.isSelectablePredicate, true); 421 422 determineMapMode(nearestPrimitive!=null); 423 424 switch(mode) { 425 case ROTATE: 426 case SCALE: 427 // if nothing was selected, select primitive under cursor for scaling or rotating 428 if (getCurrentDataSet().getSelected().isEmpty()) { 429 getCurrentDataSet().setSelected(asColl(nearestPrimitive)); 430 } 431 432 // Mode.select redraws when selectPrims is called 433 // Mode.move redraws when mouseDragged is called 434 // Mode.rotate redraws here 435 // Mode.scale redraws here 436 break; 437 case MOVE: 438 // also include case when some primitive is under cursor and no shift+ctrl / alt+ctrl is pressed 439 // so this is not movement, but selection on primitive under cursor 440 if (!cancelDrawMode && nearestPrimitive instanceof Way) { 441 virtualManager.activateVirtualNodeNearPoint(e.getPoint()); 442 } 443 OsmPrimitive toSelect = cycleManager.cycleSetup(nearestPrimitive, e.getPoint()); 444 selectPrims(asColl(toSelect), false, false); 445 useLastMoveCommandIfPossible(); 446 // Schedule a timer to update status line "initialMoveDelay+1" ms in the future 447 GuiHelper.scheduleTimer(initialMoveDelay+1, new ActionListener() { 448 @Override 449 public void actionPerformed(ActionEvent evt) { 450 updateStatusLine(); 451 } 452 }, false); 453 break; 454 case SELECT: 455 default: 456 if (!(ctrl && Main.isPlatformOsx())) { 457 // start working with rectangle or lasso 458 selectionManager.register(mv, lassoMode); 459 selectionManager.mousePressed(e); 460 break; 461 } 462 } 463 if (giveUserFeedback(e)) { 464 mv.repaint(); 465 } 466 updateStatusLine(); 467 } 468 469 @Override 470 public void mouseMoved(MouseEvent e) { 471 // Mac OSX simulates with ctrl + mouse 1 the second mouse button hence no dragging events get fired. 472 if (Main.isPlatformOsx() && (mode == Mode.ROTATE || mode == Mode.SCALE)) { 473 mouseDragged(e); 474 return; 475 } 476 oldEvent = e; 477 if(giveUserFeedback(e)) { 478 mv.repaint(); 479 } 480 } 481 482 /** 483 * If the left mouse button is pressed, move all currently selected 484 * objects (if one of them is under the mouse) or the current one under the 485 * mouse (which will become selected). 486 */ 487 @Override 488 public void mouseDragged(MouseEvent e) { 489 if (!mv.isActiveLayerVisible()) 490 return; 491 492 // Swing sends random mouseDragged events when closing dialogs by double-clicking their top-left icon on Windows 493 // Ignore such false events to prevent issues like #7078 494 if (mouseDownButton == MouseEvent.BUTTON1 && mouseReleaseTime > mouseDownTime) 495 return; 496 497 cancelDrawMode = true; 498 if (mode == Mode.SELECT) { 499 // Unregisters selectionManager if ctrl has been pressed after mouse click on Mac OS X in order to move the map 500 if (ctrl && Main.isPlatformOsx()) { 501 selectionManager.unregister(mv); 502 mv.requestClearRect(); 503 // Make sure correct cursor is displayed 504 mv.setNewCursor(Cursor.MOVE_CURSOR, this); 505 } 506 return; 507 } 508 509 // do not count anything as a move if it lasts less than 100 milliseconds. 510 if ((mode == Mode.MOVE) && (System.currentTimeMillis() - mouseDownTime < initialMoveDelay)) 511 return; 512 513 if (mode != Mode.ROTATE && mode != Mode.SCALE) // button is pressed in rotate mode 514 { 515 if ((e.getModifiersEx() & MouseEvent.BUTTON1_DOWN_MASK) == 0) 516 return; 517 } 518 519 if (mode == Mode.MOVE) { 520 // If ctrl is pressed we are in merge mode. Look for a nearby node, 521 // highlight it and adjust the cursor accordingly. 522 final boolean canMerge = ctrl && !getCurrentDataSet().getSelectedNodes().isEmpty(); 523 final OsmPrimitive p = canMerge ? (OsmPrimitive)findNodeToMergeTo(e.getPoint()) : null; 524 boolean needsRepaint = removeHighlighting(); 525 if(p != null) { 526 p.setHighlighted(true); 527 oldHighlights.add(p); 528 needsRepaint = true; 529 } 530 mv.setNewCursor(getCursor(asColl(p)), this); 531 // also update the stored mouse event, so we can display the correct cursor 532 // when dragging a node onto another one and then press CTRL to merge 533 oldEvent = e; 534 if(needsRepaint) { 535 mv.repaint(); 536 } 537 } 538 539 if (startingDraggingPos == null) { 540 startingDraggingPos = new Point(e.getX(), e.getY()); 541 } 542 543 if( lastMousePos == null ) { 544 lastMousePos = e.getPoint(); 545 return; 546 } 547 548 if (!initialMoveThresholdExceeded) { 549 int dp = (int) lastMousePos.distance(e.getX(), e.getY()); 550 if (dp < initialMoveThreshold) 551 return; // ignore small drags 552 initialMoveThresholdExceeded = true; //no more ingnoring uintil nex mouse press 553 } 554 if (e.getPoint().equals(lastMousePos)) 555 return; 556 557 EastNorth currentEN = mv.getEastNorth(e.getX(), e.getY()); 558 559 if (virtualManager.hasVirtualWaysToBeConstructed()) { 560 virtualManager.createMiddleNodeFromVirtual(currentEN); 561 } else { 562 if (!updateCommandWhileDragging(currentEN)) return; 563 } 564 565 mv.repaint(); 566 if (mode != Mode.SCALE) { 567 lastMousePos = e.getPoint(); 568 } 569 570 didMouseDrag = true; 571 } 572 573 @Override 574 public void mouseExited(MouseEvent e) { 575 if(removeHighlighting()) { 576 mv.repaint(); 577 } 578 } 579 580 @Override 581 public void mouseReleased(MouseEvent e) { 582 if (!mv.isActiveLayerVisible()) 583 return; 584 585 startingDraggingPos = null; 586 mouseReleaseTime = System.currentTimeMillis(); 587 588 if (mode == Mode.SELECT) { 589 selectionManager.unregister(mv); 590 591 // Select Draw Tool if no selection has been made 592 if (getCurrentDataSet().getSelected().isEmpty() && !cancelDrawMode) { 593 Main.map.selectDrawTool(true); 594 updateStatusLine(); 595 return; 596 } 597 } 598 599 if (mode == Mode.MOVE && e.getButton() == MouseEvent.BUTTON1) { 600 if (!didMouseDrag) { 601 // only built in move mode 602 virtualManager.clear(); 603 // do nothing if the click was to short too be recognized as a drag, 604 // but the release position is farther than 10px away from the press position 605 if (lastMousePos == null || lastMousePos.distanceSq(e.getPoint()) < 100) { 606 updateKeyModifiers(e); 607 selectPrims(cycleManager.cyclePrims(), true, false); 608 609 // If the user double-clicked a node, change to draw mode 610 Collection<OsmPrimitive> c = getCurrentDataSet().getSelected(); 611 if (e.getClickCount() >= 2 && c.size() == 1 && c.iterator().next() instanceof Node) { 612 // We need to do it like this as otherwise drawAction will see a double 613 // click and switch back to SelectMode 614 Main.worker.execute(new Runnable() { 615 @Override 616 public void run() { 617 Main.map.selectDrawTool(true); 618 } 619 }); 620 return; 621 } 622 } 623 } else { 624 confirmOrUndoMovement(e); 625 } 626 } 627 628 mode = null; 629 630 // simply remove any highlights if the middle click popup is active because 631 // the highlights don't depend on the cursor position there. If something was 632 // selected beforehand this would put us into move mode as well, which breaks 633 // the cycling through primitives on top of each other (see #6739). 634 if(e.getButton() == MouseEvent.BUTTON2) { 635 removeHighlighting(); 636 } else { 637 giveUserFeedback(e); 638 } 639 updateStatusLine(); 640 } 641 642 @Override 643 public void selectionEnded(Rectangle r, MouseEvent e) { 644 updateKeyModifiers(e); 645 selectPrims(selectionManager.getSelectedObjects(alt), true, true); 646 } 647 648 @Override 649 public void doKeyPressed(KeyEvent e) { 650 if (!Main.isDisplayingMapView() || 651 !repeatedKeySwitchLassoOption || !getShortcut().isEvent(e)) return; 652 e.consume(); 653 if (!lassoMode) { 654 Main.map.selectMapMode(Main.map.mapModeSelectLasso); 655 } else { 656 Main.map.selectMapMode(Main.map.mapModeSelect); 657 } 658 } 659 660 @Override 661 public void doKeyReleased(KeyEvent e) { 662 } 663 664 /** 665 * sets the mapmode according to key modifiers and if there are any 666 * selectables nearby. Everything has to be pre-determined for this 667 * function; its main purpose is to centralize what the modifiers do. 668 * @param hasSelectionNearby 669 */ 670 private void determineMapMode(boolean hasSelectionNearby) { 671 if (shift && ctrl) { 672 mode = Mode.ROTATE; 673 } else if (alt && ctrl) { 674 mode = Mode.SCALE; 675 } else if (hasSelectionNearby || dragInProgress()) { 676 mode = Mode.MOVE; 677 } else { 678 mode = Mode.SELECT; 679 } 680 } 681 682 /** returns true whenever elements have been grabbed and moved (i.e. the initial 683 * thresholds have been exceeded) and is still in progress (i.e. mouse button 684 * still pressed) 685 */ 686 private final boolean dragInProgress() { 687 return didMouseDrag && startingDraggingPos != null; 688 } 689 690 /** 691 * Create or update data modification command while dragging mouse - implementation of 692 * continuous moving, scaling and rotation 693 * @param currentEN - mouse position 694 * @return status of action (<code>true</code> when action was performed) 695 */ 696 private boolean updateCommandWhileDragging(EastNorth currentEN) { 697 // Currently we support only transformations which do not affect relations. 698 // So don't add them in the first place to make handling easier 699 Collection<OsmPrimitive> selection = getCurrentDataSet().getSelectedNodesAndWays(); 700 if (selection.isEmpty()) { // if nothing was selected to drag, just select nearest node/way to the cursor 701 OsmPrimitive nearestPrimitive = mv.getNearestNodeOrWay(mv.getPoint(startEN), mv.isSelectablePredicate, true); 702 getCurrentDataSet().setSelected(nearestPrimitive); 703 } 704 705 Collection<Node> affectedNodes = AllNodesVisitor.getAllNodes(selection); 706 // for these transformations, having only one node makes no sense - quit silently 707 if (affectedNodes.size() < 2 && (mode == Mode.ROTATE || mode == Mode.SCALE)) { 708 return false; 709 } 710 Command c = getLastCommand(); 711 if (mode == Mode.MOVE) { 712 if (startEN == null) return false; // fix #8128 713 getCurrentDataSet().beginUpdate(); 714 if (c instanceof MoveCommand && affectedNodes.equals(((MoveCommand) c).getParticipatingPrimitives())) { 715 ((MoveCommand) c).saveCheckpoint(); 716 ((MoveCommand) c).applyVectorTo(currentEN); 717 } else { 718 Main.main.undoRedo.add( 719 c = new MoveCommand(selection, startEN, currentEN)); 720 } 721 for (Node n : affectedNodes) { 722 LatLon ll = n.getCoor(); 723 if (ll != null && ll.isOutSideWorld()) { 724 // Revert move 725 ((MoveCommand) c).resetToCheckpoint(); 726 getCurrentDataSet().endUpdate(); 727 JOptionPane.showMessageDialog( 728 Main.parent, 729 tr("Cannot move objects outside of the world."), 730 tr("Warning"), 731 JOptionPane.WARNING_MESSAGE); 732 mv.setNewCursor(cursor, this); 733 return false; 734 } 735 } 736 } else { 737 startEN = currentEN; // drag can continue after scaling/rotation 738 739 if (mode != Mode.ROTATE && mode != Mode.SCALE) { 740 return false; 741 } 742 743 getCurrentDataSet().beginUpdate(); 744 745 if (mode == Mode.ROTATE) { 746 if (c instanceof RotateCommand && affectedNodes.equals(((RotateCommand) c).getTransformedNodes())) { 747 ((RotateCommand) c).handleEvent(currentEN); 748 } else { 749 Main.main.undoRedo.add(new RotateCommand(selection, currentEN)); 750 } 751 } else if (mode == Mode.SCALE) { 752 if (c instanceof ScaleCommand && affectedNodes.equals(((ScaleCommand) c).getTransformedNodes())) { 753 ((ScaleCommand) c).handleEvent(currentEN); 754 } else { 755 Main.main.undoRedo.add(new ScaleCommand(selection, currentEN)); 756 } 757 } 758 759 Collection<Way> ways = getCurrentDataSet().getSelectedWays(); 760 if (doesImpactStatusLine(affectedNodes, ways)) { 761 Main.map.statusLine.setDist(ways); 762 } 763 } 764 getCurrentDataSet().endUpdate(); 765 return true; 766 } 767 768 private boolean doesImpactStatusLine(Collection<Node> affectedNodes, Collection<Way> selectedWays) { 769 for (Way w : selectedWays) { 770 for (Node n : w.getNodes()) { 771 if (affectedNodes.contains(n)) { 772 return true; 773 } 774 } 775 } 776 return false; 777 } 778 779 /** 780 * Adapt last move command (if it is suitable) to work with next drag, started at point startEN 781 */ 782 private void useLastMoveCommandIfPossible() { 783 Command c = getLastCommand(); 784 Collection<Node> affectedNodes = AllNodesVisitor.getAllNodes(getCurrentDataSet().getSelected()); 785 if (c instanceof MoveCommand && affectedNodes.equals(((MoveCommand) c).getParticipatingPrimitives())) { 786 // old command was created with different base point of movement, we need to recalculate it 787 ((MoveCommand) c).changeStartPoint(startEN); 788 } 789 } 790 791 /** 792 * Obtain command in undoRedo stack to "continue" when dragging 793 */ 794 private Command getLastCommand() { 795 Command c = !Main.main.undoRedo.commands.isEmpty() 796 ? Main.main.undoRedo.commands.getLast() : null; 797 if (c instanceof SequenceCommand) { 798 c = ((SequenceCommand) c).getLastCommand(); 799 } 800 return c; 801 } 802 803 /** 804 * Present warning in case of large and possibly unwanted movements and undo 805 * unwanted movements. 806 * 807 * @param e the mouse event causing the action (mouse released) 808 */ 809 private void confirmOrUndoMovement(MouseEvent e) { 810 int max = Main.pref.getInteger("warn.move.maxelements", 20), limit = max; 811 for (OsmPrimitive osm : getCurrentDataSet().getSelected()) { 812 if (osm instanceof Way) { 813 limit -= ((Way) osm).getNodes().size(); 814 } 815 if ((limit -= 1) < 0) { 816 break; 817 } 818 } 819 if (limit < 0) { 820 ExtendedDialog ed = new ExtendedDialog( 821 Main.parent, 822 tr("Move elements"), 823 new String[]{tr("Move them"), tr("Undo move")}); 824 ed.setButtonIcons(new String[]{"reorder", "cancel"}); 825 ed.setContent( 826 /* for correct i18n of plural forms - see #9110 */ 827 trn( 828 "You moved more than {0} element. " + "Moving a large number of elements is often an error.\n" + "Really move them?", 829 "You moved more than {0} elements. " + "Moving a large number of elements is often an error.\n" + "Really move them?", 830 max, max)); 831 ed.setCancelButton(2); 832 ed.toggleEnable("movedManyElements"); 833 ed.showDialog(); 834 835 if (ed.getValue() != 1) { 836 Main.main.undoRedo.undo(); 837 } 838 } else { 839 // if small number of elements were moved, 840 updateKeyModifiers(e); 841 if (ctrl) mergePrims(e.getPoint()); 842 } 843 getCurrentDataSet().fireSelectionChanged(); 844 } 845 846 /** 847 * Merges the selected nodes to the one closest to the given mouse position if the control 848 * key is pressed. If there is no such node, no action will be done and no error will be 849 * reported. If there is, it will execute the merge and add it to the undo buffer. 850 */ 851 private final void mergePrims(Point p) { 852 Collection<Node> selNodes = getCurrentDataSet().getSelectedNodes(); 853 if (selNodes.isEmpty()) 854 return; 855 856 Node target = findNodeToMergeTo(p); 857 if (target == null) 858 return; 859 860 Collection<Node> nodesToMerge = new LinkedList<>(selNodes); 861 nodesToMerge.add(target); 862 MergeNodesAction.doMergeNodes(Main.main.getEditLayer(), nodesToMerge, target); 863 } 864 865 /** 866 * Tries to find a node to merge to when in move-merge mode for the current mouse 867 * position. Either returns the node or null, if no suitable one is nearby. 868 */ 869 private final Node findNodeToMergeTo(Point p) { 870 Collection<Node> target = mv.getNearestNodes(p, 871 getCurrentDataSet().getSelectedNodes(), 872 mv.isSelectablePredicate); 873 return target.isEmpty() ? null : target.iterator().next(); 874 } 875 876 private void selectPrims(Collection<OsmPrimitive> prims, boolean released, boolean area) { 877 DataSet ds = getCurrentDataSet(); 878 879 // not allowed together: do not change dataset selection, return early 880 // Virtual Ways: if non-empty the cursor is above a virtual node. So don't highlight 881 // anything if about to drag the virtual node (i.e. !released) but continue if the 882 // cursor is only released above a virtual node by accident (i.e. released). See #7018 883 if (ds == null || (shift && ctrl) || (ctrl && !released) || (virtualManager.hasVirtualWaysToBeConstructed() && !released)) 884 return; 885 886 if (!released) { 887 // Don't replace the selection if the user clicked on a 888 // selected object (it breaks moving of selected groups). 889 // Do it later, on mouse release. 890 shift |= ds.getSelected().containsAll(prims); 891 } 892 893 if (ctrl) { 894 // Ctrl on an item toggles its selection status, 895 // but Ctrl on an *area* just clears those items 896 // out of the selection. 897 if (area) { 898 ds.clearSelection(prims); 899 } else { 900 ds.toggleSelected(prims); 901 } 902 } else if (shift) { 903 // add prims to an existing selection 904 ds.addSelected(prims); 905 } else { 906 // clear selection, then select the prims clicked 907 ds.setSelected(prims); 908 } 909 } 910 911 /** 912 * Returns the current select mode. 913 * @return the select mode 914 * @since 7543 915 */ 916 public final Mode getMode() { 917 return mode; 918 } 919 920 @Override 921 public String getModeHelpText() { 922 if (mouseDownButton == MouseEvent.BUTTON1 && mouseReleaseTime < mouseDownTime) { 923 if (mode == Mode.SELECT) 924 return tr("Release the mouse button to select the objects in the rectangle."); 925 else if (mode == Mode.MOVE && (System.currentTimeMillis() - mouseDownTime >= initialMoveDelay)) { 926 final boolean canMerge = getCurrentDataSet()!=null && !getCurrentDataSet().getSelectedNodes().isEmpty(); 927 final String mergeHelp = canMerge ? (" " + tr("Ctrl to merge with nearest node.")) : ""; 928 return tr("Release the mouse button to stop moving.") + mergeHelp; 929 } else if (mode == Mode.ROTATE) 930 return tr("Release the mouse button to stop rotating."); 931 else if (mode == Mode.SCALE) 932 return tr("Release the mouse button to stop scaling."); 933 } 934 return tr("Move objects by dragging; Shift to add to selection (Ctrl to toggle); Shift-Ctrl to rotate selected; Alt-Ctrl to scale selected; or change selection"); 935 } 936 937 @Override 938 public boolean layerIsSupported(Layer l) { 939 return l instanceof OsmDataLayer; 940 } 941 942 /** 943 * Enable or diable the lasso mode 944 * @param lassoMode true to enable the lasso mode, false otherwise 945 */ 946 public void setLassoMode(boolean lassoMode) { 947 this.selectionManager.setLassoMode(lassoMode); 948 this.lassoMode = lassoMode; 949 } 950 951 CycleManager cycleManager = new CycleManager(); 952 VirtualManager virtualManager = new VirtualManager(); 953 954 private class CycleManager { 955 956 private Collection<OsmPrimitive> cycleList = Collections.emptyList(); 957 private boolean cyclePrims = false; 958 private OsmPrimitive cycleStart = null; 959 private boolean waitForMouseUpParameter; 960 private boolean multipleMatchesParameter; 961 /** 962 * read preferences 963 */ 964 private void init() { 965 waitForMouseUpParameter = Main.pref.getBoolean("mappaint.select.waits-for-mouse-up", false); 966 multipleMatchesParameter = Main.pref.getBoolean("selectaction.cycles.multiple.matches", false); 967 } 968 969 /** 970 * Determine primitive to be selected and build cycleList 971 * @param nearest primitive found by simple method 972 * @param p point where user clicked 973 * @return OsmPrimitive to be selected 974 */ 975 private OsmPrimitive cycleSetup(OsmPrimitive nearest, Point p) { 976 OsmPrimitive osm = null; 977 978 if (nearest != null) { 979 osm = nearest; 980 981 if (!(alt || multipleMatchesParameter)) { 982 // no real cycling, just one element in cycle list 983 cycleList = asColl(osm); 984 985 if (waitForMouseUpParameter) { 986 // prefer a selected nearest node or way, if possible 987 osm = mv.getNearestNodeOrWay(p, mv.isSelectablePredicate, true); 988 } 989 } else { 990 // Alt + left mouse button pressed: we need to build cycle list 991 cycleList = mv.getAllNearest(p, mv.isSelectablePredicate); 992 993 if (cycleList.size() > 1) { 994 cyclePrims = false; 995 996 // find first already selected element in cycle list 997 OsmPrimitive old = osm; 998 for (OsmPrimitive o : cycleList) { 999 if (o.isSelected()) { 1000 cyclePrims = true; 1001 osm = o; 1002 break; 1003 } 1004 } 1005 1006 // special case: for cycle groups of 2, we can toggle to the 1007 // true nearest primitive on mousePressed right away 1008 if (cycleList.size() == 2 && !waitForMouseUpParameter) { 1009 if (!(osm.equals(old) || osm.isNew() || ctrl)) { 1010 cyclePrims = false; 1011 osm = old; 1012 } // else defer toggling to mouseRelease time in those cases: 1013 /* 1014 * osm == old -- the true nearest node is the 1015 * selected one osm is a new node -- do not break 1016 * unglue ways in ALT mode ctrl is pressed -- ctrl 1017 * generally works on mouseReleased 1018 */ 1019 } 1020 } 1021 } 1022 } 1023 return osm; 1024 } 1025 1026 /** 1027 * Modifies current selection state and returns the next element in a 1028 * selection cycle given by 1029 * <code>cycleList</code> field 1030 * @return the next element of cycle list 1031 */ 1032 private Collection<OsmPrimitive> cyclePrims() { 1033 OsmPrimitive nxt = null; 1034 1035 if (cycleList.size() <= 1) { 1036 // no real cycling, just return one-element collection with nearest primitive in it 1037 return cycleList; 1038 } 1039// updateKeyModifiers(e); // already called before ! 1040 1041 DataSet ds = getCurrentDataSet(); 1042 OsmPrimitive first = cycleList.iterator().next(), foundInDS = null; 1043 nxt = first; 1044 1045 if (cyclePrims && shift) { 1046 for (Iterator<OsmPrimitive> i = cycleList.iterator(); i.hasNext();) { 1047 nxt = i.next(); 1048 if (!nxt.isSelected()) { 1049 break; // take first primitive in cycleList not in sel 1050 } 1051 } 1052 // if primitives 1,2,3 are under cursor, [Alt-press] [Shift-release] gives 1 -> 12 -> 123 1053 } else { 1054 for (Iterator<OsmPrimitive> i = cycleList.iterator(); i.hasNext();) { 1055 nxt = i.next(); 1056 if (nxt.isSelected()) { 1057 foundInDS = nxt; 1058 // first selected primitive in cycleList is found 1059 if (cyclePrims || ctrl) { 1060 ds.clearSelection(foundInDS); // deselect it 1061 nxt = i.hasNext() ? i.next() : first; 1062 // return next one in cycle list (last->first) 1063 } 1064 break; // take next primitive in cycleList 1065 } 1066 } 1067 } 1068 1069 // if "no-alt-cycling" is enabled, Ctrl-Click arrives here. 1070 if (ctrl) { 1071 // a member of cycleList was found in the current dataset selection 1072 if (foundInDS != null) { 1073 // mouse was moved to a different selection group w/ a previous sel 1074 if (!cycleList.contains(cycleStart)) { 1075 ds.clearSelection(cycleList); 1076 cycleStart = foundInDS; 1077 } else if (cycleStart.equals(nxt)) { 1078 // loop detected, insert deselect step 1079 ds.addSelected(nxt); 1080 } 1081 } else { 1082 // setup for iterating a sel group again or a new, different one.. 1083 nxt = (cycleList.contains(cycleStart)) ? cycleStart : first; 1084 cycleStart = nxt; 1085 } 1086 } else { 1087 cycleStart = null; 1088 } 1089 // return one-element collection with one element to be selected (or added to selection) 1090 return asColl(nxt); 1091 } 1092 } 1093 1094 private class VirtualManager { 1095 1096 private Node virtualNode = null; 1097 private Collection<WaySegment> virtualWays = new LinkedList<>(); 1098 private int nodeVirtualSize; 1099 private int virtualSnapDistSq2; 1100 private int virtualSpace; 1101 1102 private void init() { 1103 nodeVirtualSize = Main.pref.getInteger("mappaint.node.virtual-size", 8); 1104 int virtualSnapDistSq = Main.pref.getInteger("mappaint.node.virtual-snap-distance", 8); 1105 virtualSnapDistSq2 = virtualSnapDistSq*virtualSnapDistSq; 1106 virtualSpace = Main.pref.getInteger("mappaint.node.virtual-space", 70); 1107 } 1108 1109 /** 1110 * Calculate a virtual node if there is enough visual space to draw a 1111 * crosshair node and the middle of a way segment is clicked. If the 1112 * user drags the crosshair node, it will be added to all ways in 1113 * <code>virtualWays</code>. 1114 * 1115 * @param p the point clicked 1116 * @return whether 1117 * <code>virtualNode</code> and 1118 * <code>virtualWays</code> were setup. 1119 */ 1120 private boolean activateVirtualNodeNearPoint(Point p) { 1121 if (nodeVirtualSize > 0) { 1122 1123 Collection<WaySegment> selVirtualWays = new LinkedList<>(); 1124 Pair<Node, Node> vnp = null, wnp = new Pair<>(null, null); 1125 1126 Way w = null; 1127 for (WaySegment ws : mv.getNearestWaySegments(p, mv.isSelectablePredicate)) { 1128 w = ws.way; 1129 1130 Point2D p1 = mv.getPoint2D(wnp.a = w.getNode(ws.lowerIndex)); 1131 Point2D p2 = mv.getPoint2D(wnp.b = w.getNode(ws.lowerIndex + 1)); 1132 if (WireframeMapRenderer.isLargeSegment(p1, p2, virtualSpace)) { 1133 Point2D pc = new Point2D.Double((p1.getX() + p2.getX()) / 2, (p1.getY() + p2.getY()) / 2); 1134 if (p.distanceSq(pc) < virtualSnapDistSq2) { 1135 // Check that only segments on top of each other get added to the 1136 // virtual ways list. Otherwise ways that coincidentally have their 1137 // virtual node at the same spot will be joined which is likely unwanted 1138 Pair.sort(wnp); 1139 if (vnp == null) { 1140 vnp = new Pair<>(wnp.a, wnp.b); 1141 virtualNode = new Node(mv.getLatLon(pc.getX(), pc.getY())); 1142 } 1143 if (vnp.equals(wnp)) { 1144 // if mutiple line segments have the same points, 1145 // add all segments to be splitted to virtualWays list 1146 // if some lines are selected, only their segments will go to virtualWays 1147 (w.isSelected() ? selVirtualWays : virtualWays).add(ws); 1148 } 1149 } 1150 } 1151 } 1152 1153 if (!selVirtualWays.isEmpty()) { 1154 virtualWays = selVirtualWays; 1155 } 1156 } 1157 1158 return !virtualWays.isEmpty(); 1159 } 1160 1161 private void createMiddleNodeFromVirtual(EastNorth currentEN) { 1162 Collection<Command> virtualCmds = new LinkedList<>(); 1163 virtualCmds.add(new AddCommand(virtualNode)); 1164 for (WaySegment virtualWay : virtualWays) { 1165 Way w = virtualWay.way; 1166 Way wnew = new Way(w); 1167 wnew.addNode(virtualWay.lowerIndex + 1, virtualNode); 1168 virtualCmds.add(new ChangeCommand(w, wnew)); 1169 } 1170 virtualCmds.add(new MoveCommand(virtualNode, startEN, currentEN)); 1171 String text = trn("Add and move a virtual new node to way", 1172 "Add and move a virtual new node to {0} ways", virtualWays.size(), 1173 virtualWays.size()); 1174 Main.main.undoRedo.add(new SequenceCommand(text, virtualCmds)); 1175 getCurrentDataSet().setSelected(Collections.singleton((OsmPrimitive) virtualNode)); 1176 clear(); 1177 } 1178 1179 private void clear() { 1180 virtualWays.clear(); 1181 virtualNode = null; 1182 } 1183 1184 private boolean hasVirtualNode() { 1185 return virtualNode != null; 1186 } 1187 1188 private boolean hasVirtualWaysToBeConstructed() { 1189 return !virtualWays.isEmpty(); 1190 } 1191 } 1192 1193 /** 1194 * @return o as collection of o's type. 1195 */ 1196 protected static <T> Collection<T> asColl(T o) { 1197 if (o == null) 1198 return Collections.emptySet(); 1199 return Collections.singleton(o); 1200 } 1201}