001 // License: GPL. See LICENSE file for details. 002 package org.openstreetmap.josm.actions.mapmode; 003 004 import static org.openstreetmap.josm.gui.help.HelpUtil.ht; 005 import static org.openstreetmap.josm.tools.I18n.marktr; 006 import static org.openstreetmap.josm.tools.I18n.tr; 007 import static org.openstreetmap.josm.tools.I18n.trn; 008 009 import java.awt.AWTEvent; 010 import java.awt.BasicStroke; 011 import java.awt.Color; 012 import java.awt.Component; 013 import java.awt.Cursor; 014 import java.awt.Graphics2D; 015 import java.awt.KeyboardFocusManager; 016 import java.awt.Point; 017 import java.awt.Stroke; 018 import java.awt.Toolkit; 019 import java.awt.event.AWTEventListener; 020 import java.awt.event.ActionEvent; 021 import java.awt.event.ActionListener; 022 import java.awt.event.InputEvent; 023 import java.awt.event.KeyEvent; 024 import java.awt.event.MouseEvent; 025 import java.awt.event.MouseListener; 026 import java.awt.geom.GeneralPath; 027 import java.util.ArrayList; 028 import java.util.Arrays; 029 import java.util.Collection; 030 import java.util.Collections; 031 import java.util.HashMap; 032 import java.util.HashSet; 033 import java.util.Iterator; 034 import java.util.LinkedList; 035 import java.util.List; 036 import java.util.Map; 037 import java.util.Set; 038 import java.util.TreeSet; 039 040 import javax.swing.AbstractAction; 041 import javax.swing.JCheckBoxMenuItem; 042 import javax.swing.JFrame; 043 import javax.swing.JMenuItem; 044 import javax.swing.JOptionPane; 045 import javax.swing.JPopupMenu; 046 import javax.swing.SwingUtilities; 047 import javax.swing.Timer; 048 049 import org.openstreetmap.josm.Main; 050 import org.openstreetmap.josm.actions.JosmAction; 051 import org.openstreetmap.josm.command.AddCommand; 052 import org.openstreetmap.josm.command.ChangeCommand; 053 import org.openstreetmap.josm.command.Command; 054 import org.openstreetmap.josm.command.SequenceCommand; 055 import org.openstreetmap.josm.data.Bounds; 056 import org.openstreetmap.josm.data.SelectionChangedListener; 057 import org.openstreetmap.josm.data.coor.EastNorth; 058 import org.openstreetmap.josm.data.coor.LatLon; 059 import org.openstreetmap.josm.data.osm.DataSet; 060 import org.openstreetmap.josm.data.osm.Node; 061 import org.openstreetmap.josm.data.osm.OsmPrimitive; 062 import org.openstreetmap.josm.data.osm.Way; 063 import org.openstreetmap.josm.data.osm.WaySegment; 064 import org.openstreetmap.josm.data.osm.visitor.paint.PaintColors; 065 import org.openstreetmap.josm.gui.MainMenu; 066 import org.openstreetmap.josm.gui.MapFrame; 067 import org.openstreetmap.josm.gui.MapView; 068 import org.openstreetmap.josm.gui.layer.Layer; 069 import org.openstreetmap.josm.gui.layer.MapViewPaintable; 070 import org.openstreetmap.josm.gui.layer.OsmDataLayer; 071 import org.openstreetmap.josm.gui.widgets.PopupMenuLauncher; 072 import org.openstreetmap.josm.tools.Geometry; 073 import org.openstreetmap.josm.tools.ImageProvider; 074 import org.openstreetmap.josm.tools.Pair; 075 import org.openstreetmap.josm.tools.Shortcut; 076 import org.openstreetmap.josm.tools.Utils; 077 078 /** 079 * Mapmode to add nodes, create and extend ways. 080 */ 081 public class DrawAction extends MapMode implements MapViewPaintable, SelectionChangedListener, AWTEventListener { 082 final private Cursor cursorJoinNode; 083 final private Cursor cursorJoinWay; 084 085 private Node lastUsedNode = null; 086 private double PHI=Math.toRadians(90); 087 088 private Node mouseOnExistingNode; 089 private Set<Way> mouseOnExistingWays = new HashSet<Way>(); 090 // old highlights store which primitives are currently highlighted. This 091 // is true, even if target highlighting is disabled since the status bar 092 // derives its information from this list as well. 093 private Set<OsmPrimitive> oldHighlights = new HashSet<OsmPrimitive>(); 094 // new highlights contains a list of primitives that should be highlighted 095 // but haven???t been so far. The idea is to compare old and new and only 096 // repaint if there are changes. 097 private Set<OsmPrimitive> newHighlights = new HashSet<OsmPrimitive>(); 098 private boolean drawHelperLine; 099 private boolean wayIsFinished = false; 100 private boolean drawTargetHighlight; 101 private Point mousePos; 102 private Point oldMousePos; 103 private Color selectedColor; 104 105 private Node currentBaseNode; 106 private Node previousNode; 107 private EastNorth currentMouseEastNorth; 108 109 private final SnapHelper snapHelper = new SnapHelper(); 110 111 private Shortcut backspaceShortcut; 112 private BackSpaceAction backspaceAction; 113 private final Shortcut snappingShortcut; 114 115 private final SnapChangeAction snapChangeAction; 116 private final JCheckBoxMenuItem snapCheckboxMenuItem; 117 private boolean useRepeatedShortcut; 118 119 public DrawAction(MapFrame mapFrame) { 120 super(tr("Draw"), "node/autonode", tr("Draw nodes"), 121 Shortcut.registerShortcut("mapmode:draw", tr("Mode: {0}", tr("Draw")), KeyEvent.VK_A, Shortcut.DIRECT), 122 mapFrame, ImageProvider.getCursor("crosshair", null)); 123 124 snappingShortcut = Shortcut.registerShortcut("mapmode:drawanglesnapping", 125 tr("Mode: Draw Angle snapping"), KeyEvent.VK_TAB, Shortcut.DIRECT); 126 snapChangeAction = new SnapChangeAction(); 127 snapCheckboxMenuItem = addMenuItem(); 128 snapHelper.setMenuCheckBox(snapCheckboxMenuItem); 129 backspaceShortcut = Shortcut.registerShortcut("mapmode:backspace", 130 tr("Backspace in Add mode"), KeyEvent.VK_BACK_SPACE, Shortcut.DIRECT); 131 backspaceAction = new BackSpaceAction(); 132 cursorJoinNode = ImageProvider.getCursor("crosshair", "joinnode"); 133 cursorJoinWay = ImageProvider.getCursor("crosshair", "joinway"); 134 } 135 136 private JCheckBoxMenuItem addMenuItem() { 137 int n=Main.main.menu.editMenu.getItemCount(); 138 for (int i=n-1;i>0;i--) { 139 JMenuItem item = Main.main.menu.editMenu.getItem(i); 140 if (item!=null && item.getAction() !=null && item.getAction() instanceof SnapChangeAction) { 141 Main.main.menu.editMenu.remove(i); 142 } 143 } 144 return MainMenu.addWithCheckbox(Main.main.menu.editMenu, snapChangeAction, MainMenu.WINDOW_MENU_GROUP.VOLATILE); 145 } 146 147 /** 148 * Checks if a map redraw is required and does so if needed. Also updates the status bar 149 */ 150 private boolean redrawIfRequired() { 151 updateStatusLine(); 152 // repaint required if the helper line is active. 153 boolean needsRepaint = drawHelperLine && !wayIsFinished; 154 if(drawTargetHighlight) { 155 // move newHighlights to oldHighlights; only update changed primitives 156 for(OsmPrimitive x : newHighlights) { 157 if(oldHighlights.contains(x)) { 158 continue; 159 } 160 x.setHighlighted(true); 161 needsRepaint = true; 162 } 163 oldHighlights.removeAll(newHighlights); 164 for(OsmPrimitive x : oldHighlights) { 165 x.setHighlighted(false); 166 needsRepaint = true; 167 } 168 } 169 // required in order to print correct help text 170 oldHighlights = newHighlights; 171 172 if (!needsRepaint && !drawTargetHighlight) 173 return false; 174 175 // update selection to reflect which way being modified 176 if (currentBaseNode != null && getCurrentDataSet() != null && getCurrentDataSet().getSelected().isEmpty() == false) { 177 Way continueFrom = getWayForNode(currentBaseNode); 178 if (alt && continueFrom != null && (!currentBaseNode.isSelected() || continueFrom.isSelected())) { 179 getCurrentDataSet().beginUpdate(); // to prevent the selection listener to screw around with the state 180 getCurrentDataSet().addSelected(currentBaseNode); 181 getCurrentDataSet().clearSelection(continueFrom); 182 getCurrentDataSet().endUpdate(); 183 needsRepaint = true; 184 } else if (!alt && continueFrom != null && !continueFrom.isSelected()) { 185 getCurrentDataSet().addSelected(continueFrom); 186 needsRepaint = true; 187 } 188 } 189 190 if(needsRepaint) { 191 Main.map.mapView.repaint(); 192 } 193 return needsRepaint; 194 } 195 196 @Override 197 public void enterMode() { 198 if (!isEnabled()) 199 return; 200 super.enterMode(); 201 selectedColor =PaintColors.SELECTED.get(); 202 drawHelperLine = Main.pref.getBoolean("draw.helper-line", true); 203 drawTargetHighlight = Main.pref.getBoolean("draw.target-highlight", true); 204 205 // determine if selection is suitable to continue drawing. If it 206 // isn't, set wayIsFinished to true to avoid superfluous repaints. 207 determineCurrentBaseNodeAndPreviousNode(getCurrentDataSet().getSelected()); 208 wayIsFinished = currentBaseNode == null; 209 210 snapHelper.init(); 211 snapCheckboxMenuItem.getAction().setEnabled(true); 212 213 timer = new Timer(0, new ActionListener() { 214 @Override 215 public void actionPerformed(ActionEvent ae) { 216 timer.stop(); 217 if (set.remove(releaseEvent.getKeyCode())) { 218 doKeyReleaseEvent(releaseEvent); 219 } 220 } 221 222 }); 223 Main.map.statusLine.getAnglePanel().addMouseListener(snapHelper.anglePopupListener); 224 Main.registerActionShortcut(backspaceAction, backspaceShortcut); 225 226 Main.map.mapView.addMouseListener(this); 227 Main.map.mapView.addMouseMotionListener(this); 228 Main.map.mapView.addTemporaryLayer(this); 229 DataSet.addSelectionListener(this); 230 231 try { 232 Toolkit.getDefaultToolkit().addAWTEventListener(this, AWTEvent.KEY_EVENT_MASK); 233 } catch (SecurityException ex) { 234 } 235 // would like to but haven't got mouse position yet: 236 // computeHelperLine(false, false, false); 237 } 238 239 @Override 240 public void exitMode() { 241 super.exitMode(); 242 Main.map.mapView.removeMouseListener(this); 243 Main.map.mapView.removeMouseMotionListener(this); 244 Main.map.mapView.removeTemporaryLayer(this); 245 DataSet.removeSelectionListener(this); 246 Main.unregisterActionShortcut(backspaceAction, backspaceShortcut); 247 snapHelper.unsetFixedMode(); 248 snapCheckboxMenuItem.getAction().setEnabled(false); 249 250 Main.map.statusLine.getAnglePanel().removeMouseListener(snapHelper.anglePopupListener); 251 Main.map.statusLine.activateAnglePanel(false); 252 253 removeHighlighting(); 254 try { 255 Toolkit.getDefaultToolkit().removeAWTEventListener(this); 256 } catch (SecurityException ex) { 257 } 258 259 // when exiting we let everybody know about the currently selected 260 // primitives 261 // 262 DataSet ds = getCurrentDataSet(); 263 if(ds != null) { 264 ds.fireSelectionChanged(); 265 } 266 } 267 268 /** 269 * redraw to (possibly) get rid of helper line if selection changes. 270 */ 271 public void eventDispatched(AWTEvent event) { 272 if(Main.map == null || Main.map.mapView == null || !Main.map.mapView.isActiveLayerDrawable()) 273 return; 274 if (event instanceof KeyEvent) { 275 KeyEvent e = (KeyEvent) event; 276 if (snappingShortcut.isEvent(e) || (useRepeatedShortcut && getShortcut().isEvent(e))) { 277 Component focused = KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner(); 278 if (SwingUtilities.getWindowAncestor(focused) instanceof JFrame) { 279 processKeyEvent(e); 280 } 281 } 282 } // toggle angle snapping 283 updateKeyModifiers((InputEvent) event); 284 computeHelperLine(); 285 addHighlighting(); 286 } 287 288 // events for crossplatform key holding processing 289 // thanks to http://www.arco.in-berlin.de/keyevent.html 290 private final TreeSet<Integer> set = new TreeSet<Integer>(); 291 private KeyEvent releaseEvent; 292 private Timer timer; 293 void processKeyEvent(KeyEvent e) { 294 if (!snappingShortcut.isEvent(e) && !(useRepeatedShortcut && getShortcut().isEvent(e))) 295 return; 296 297 if (e.getID() == KeyEvent.KEY_PRESSED) { 298 if (timer.isRunning()) { 299 timer.stop(); 300 } else if (set.add((e.getKeyCode()))) { 301 doKeyPressEvent(e); 302 } 303 } else if (e.getID() == KeyEvent.KEY_RELEASED) { 304 if (timer.isRunning()) { 305 timer.stop(); 306 if (set.remove(e.getKeyCode())) { 307 doKeyReleaseEvent(e); 308 } 309 } else { 310 releaseEvent = e; 311 timer.restart(); 312 } 313 } 314 } 315 316 private void doKeyPressEvent(KeyEvent e) { 317 snapHelper.setFixedMode(); 318 computeHelperLine(); 319 redrawIfRequired(); 320 } 321 private void doKeyReleaseEvent(KeyEvent e) { 322 snapHelper.unFixOrTurnOff(); 323 computeHelperLine(); 324 redrawIfRequired(); 325 } 326 327 /** 328 * redraw to (possibly) get rid of helper line if selection changes. 329 */ 330 public void selectionChanged(Collection<? extends OsmPrimitive> newSelection) { 331 if(!Main.map.mapView.isActiveLayerDrawable()) 332 return; 333 computeHelperLine(); 334 addHighlighting(); 335 } 336 337 private void tryAgain(MouseEvent e) { 338 getCurrentDataSet().setSelected(); 339 mouseReleased(e); 340 } 341 342 /** 343 * This function should be called when the user wishes to finish his current draw action. 344 * If Potlatch Style is enabled, it will switch to select tool, otherwise simply disable 345 * the helper line until the user chooses to draw something else. 346 */ 347 private void finishDrawing() { 348 // let everybody else know about the current selection 349 // 350 Main.main.getCurrentDataSet().fireSelectionChanged(); 351 lastUsedNode = null; 352 wayIsFinished = true; 353 Main.map.selectSelectTool(true); 354 snapHelper.noSnapNow(); 355 356 // Redraw to remove the helper line stub 357 computeHelperLine(); 358 removeHighlighting(); 359 } 360 361 private Point rightClickPressPos; 362 363 @Override 364 public void mousePressed(MouseEvent e) { 365 if (e.getButton() == MouseEvent.BUTTON3) { 366 rightClickPressPos = e.getPoint(); 367 } 368 } 369 370 /** 371 * If user clicked with the left button, add a node at the current mouse 372 * position. 373 * 374 * If in nodeway mode, insert the node into the way. 375 */ 376 @Override public void mouseReleased(MouseEvent e) { 377 if (e.getButton() == MouseEvent.BUTTON3) { 378 Point curMousePos = e.getPoint(); 379 if (curMousePos.equals(rightClickPressPos)) { 380 WaySegment seg = Main.map.mapView.getNearestWaySegment(curMousePos, OsmPrimitive.isSelectablePredicate); 381 if (seg!=null) { 382 snapHelper.setBaseSegment(seg); 383 computeHelperLine(); 384 redrawIfRequired(); 385 } 386 } 387 return; 388 } 389 if (e.getButton() != MouseEvent.BUTTON1) 390 return; 391 if(!Main.map.mapView.isActiveLayerDrawable()) 392 return; 393 // request focus in order to enable the expected keyboard shortcuts 394 // 395 Main.map.mapView.requestFocus(); 396 397 if(e.getClickCount() > 1 && mousePos != null && mousePos.equals(oldMousePos)) { 398 // A double click equals "user clicked last node again, finish way" 399 // Change draw tool only if mouse position is nearly the same, as 400 // otherwise fast clicks will count as a double click 401 finishDrawing(); 402 return; 403 } 404 oldMousePos = mousePos; 405 406 // we copy ctrl/alt/shift from the event just in case our global 407 // AWTEvent didn't make it through the security manager. Unclear 408 // if that can ever happen but better be safe. 409 updateKeyModifiers(e); 410 mousePos = e.getPoint(); 411 412 DataSet ds = getCurrentDataSet(); 413 Collection<OsmPrimitive> selection = new ArrayList<OsmPrimitive>(ds.getSelected()); 414 Collection<Command> cmds = new LinkedList<Command>(); 415 Collection<OsmPrimitive> newSelection = new LinkedList<OsmPrimitive>(ds.getSelected()); 416 417 ArrayList<Way> reuseWays = new ArrayList<Way>(), 418 replacedWays = new ArrayList<Way>(); 419 boolean newNode = false; 420 Node n = null; 421 422 if (!ctrl) { 423 n = Main.map.mapView.getNearestNode(mousePos, OsmPrimitive.isSelectablePredicate); 424 } 425 426 if (n != null && !snapHelper.isActive()) { 427 // user clicked on node 428 if (selection.isEmpty() || wayIsFinished) { 429 // select the clicked node and do nothing else 430 // (this is just a convenience option so that people don't 431 // have to switch modes) 432 433 getCurrentDataSet().setSelected(n); 434 // If we extend/continue an existing way, select it already now to make it obvious 435 Way continueFrom = getWayForNode(n); 436 if (continueFrom != null) { 437 getCurrentDataSet().addSelected(continueFrom); 438 } 439 440 // The user explicitly selected a node, so let him continue drawing 441 wayIsFinished = false; 442 return; 443 } 444 } else { 445 EastNorth newEN; 446 if (n!=null) { 447 EastNorth foundPoint = n.getEastNorth(); 448 // project found node to snapping line 449 newEN = snapHelper.getSnapPoint(foundPoint); 450 if (foundPoint.distance(newEN) > 1e-4) { 451 n = new Node(newEN); // point != projected, so we create new node 452 newNode = true; 453 } 454 } else { // n==null, no node found in clicked area 455 EastNorth mouseEN = Main.map.mapView.getEastNorth(e.getX(), e.getY()); 456 newEN = snapHelper.isSnapOn() ? snapHelper.getSnapPoint(mouseEN) : mouseEN; 457 n = new Node(newEN); //create node at clicked point 458 newNode = true; 459 } 460 snapHelper.unsetFixedMode(); 461 } 462 463 if (newNode) { 464 if (n.getCoor().isOutSideWorld()) { 465 JOptionPane.showMessageDialog( 466 Main.parent, 467 tr("Cannot add a node outside of the world."), 468 tr("Warning"), 469 JOptionPane.WARNING_MESSAGE 470 ); 471 return; 472 } 473 cmds.add(new AddCommand(n)); 474 475 if (!ctrl) { 476 // Insert the node into all the nearby way segments 477 List<WaySegment> wss = Main.map.mapView.getNearestWaySegments( 478 Main.map.mapView.getPoint(n), OsmPrimitive.isSelectablePredicate); 479 if (snapHelper.isActive()) { 480 tryToMoveNodeOnIntersection(wss,n); 481 } 482 insertNodeIntoAllNearbySegments(wss, n, newSelection, cmds, replacedWays, reuseWays); 483 } 484 } 485 // now "n" is newly created or reused node that shoud be added to some way 486 487 // This part decides whether or not a "segment" (i.e. a connection) is made to an 488 // existing node. 489 490 // For a connection to be made, the user must either have a node selected (connection 491 // is made to that node), or he must have a way selected *and* one of the endpoints 492 // of that way must be the last used node (connection is made to last used node), or 493 // he must have a way and a node selected (connection is made to the selected node). 494 495 // If the above does not apply, the selection is cleared and a new try is started 496 497 boolean extendedWay = false; 498 boolean wayIsFinishedTemp = wayIsFinished; 499 wayIsFinished = false; 500 501 // don't draw lines if shift is held 502 if (selection.size() > 0 && !shift) { 503 Node selectedNode = null; 504 Way selectedWay = null; 505 506 for (OsmPrimitive p : selection) { 507 if (p instanceof Node) { 508 if (selectedNode != null) { 509 // Too many nodes selected to do something useful 510 tryAgain(e); 511 return; 512 } 513 selectedNode = (Node) p; 514 } else if (p instanceof Way) { 515 if (selectedWay != null) { 516 // Too many ways selected to do something useful 517 tryAgain(e); 518 return; 519 } 520 selectedWay = (Way) p; 521 } 522 } 523 524 // the node from which we make a connection 525 Node n0 = findNodeToContinueFrom(selectedNode, selectedWay); 526 // We have a selection but it isn't suitable. Try again. 527 if(n0 == null) { 528 tryAgain(e); 529 return; 530 } 531 if(!wayIsFinishedTemp){ 532 if(isSelfContainedWay(selectedWay, n0, n)) 533 return; 534 535 // User clicked last node again, finish way 536 if(n0 == n) { 537 finishDrawing(); 538 return; 539 } 540 541 // Ok we know now that we'll insert a line segment, but will it connect to an 542 // existing way or make a new way of its own? The "alt" modifier means that the 543 // user wants a new way. 544 Way way = alt ? null : (selectedWay != null) ? selectedWay : getWayForNode(n0); 545 Way wayToSelect; 546 547 // Don't allow creation of self-overlapping ways 548 if(way != null) { 549 int nodeCount=0; 550 for (Node p : way.getNodes()) 551 if(p.equals(n0)) { 552 nodeCount++; 553 } 554 if(nodeCount > 1) { 555 way = null; 556 } 557 } 558 559 if (way == null) { 560 way = new Way(); 561 way.addNode(n0); 562 cmds.add(new AddCommand(way)); 563 wayToSelect = way; 564 } else { 565 int i; 566 if ((i = replacedWays.indexOf(way)) != -1) { 567 way = reuseWays.get(i); 568 wayToSelect = way; 569 } else { 570 wayToSelect = way; 571 Way wnew = new Way(way); 572 cmds.add(new ChangeCommand(way, wnew)); 573 way = wnew; 574 } 575 } 576 577 // Connected to a node that's already in the way 578 if(way.containsNode(n)) { 579 wayIsFinished = true; 580 selection.clear(); 581 } 582 583 // Add new node to way 584 if (way.getNode(way.getNodesCount() - 1) == n0) { 585 way.addNode(n); 586 } else { 587 way.addNode(0, n); 588 } 589 590 extendedWay = true; 591 newSelection.clear(); 592 newSelection.add(wayToSelect); 593 } 594 } 595 596 String title; 597 if (!extendedWay) { 598 if (!newNode) 599 return; // We didn't do anything. 600 else if (reuseWays.isEmpty()) { 601 title = tr("Add node"); 602 } else { 603 title = tr("Add node into way"); 604 for (Way w : reuseWays) { 605 newSelection.remove(w); 606 } 607 } 608 newSelection.clear(); 609 newSelection.add(n); 610 } else if (!newNode) { 611 title = tr("Connect existing way to node"); 612 } else if (reuseWays.isEmpty()) { 613 title = tr("Add a new node to an existing way"); 614 } else { 615 title = tr("Add node into way and connect"); 616 } 617 618 Command c = new SequenceCommand(title, cmds); 619 620 Main.main.undoRedo.add(c); 621 if(!wayIsFinished) { 622 lastUsedNode = n; 623 } 624 625 getCurrentDataSet().setSelected(newSelection); 626 627 // "viewport following" mode for tracing long features 628 // from aerial imagery or GPS tracks. 629 if (n != null && Main.map.mapView.viewportFollowing) { 630 Main.map.mapView.smoothScrollTo(n.getEastNorth()); 631 }; 632 computeHelperLine(); 633 removeHighlighting(); 634 } 635 636 private void insertNodeIntoAllNearbySegments(List<WaySegment> wss, Node n, Collection<OsmPrimitive> newSelection, Collection<Command> cmds, ArrayList<Way> replacedWays, ArrayList<Way> reuseWays) { 637 Map<Way, List<Integer>> insertPoints = new HashMap<Way, List<Integer>>(); 638 for (WaySegment ws : wss) { 639 List<Integer> is; 640 if (insertPoints.containsKey(ws.way)) { 641 is = insertPoints.get(ws.way); 642 } else { 643 is = new ArrayList<Integer>(); 644 insertPoints.put(ws.way, is); 645 } 646 647 is.add(ws.lowerIndex); 648 } 649 650 Set<Pair<Node,Node>> segSet = new HashSet<Pair<Node,Node>>(); 651 652 for (Map.Entry<Way, List<Integer>> insertPoint : insertPoints.entrySet()) { 653 Way w = insertPoint.getKey(); 654 List<Integer> is = insertPoint.getValue(); 655 656 Way wnew = new Way(w); 657 658 pruneSuccsAndReverse(is); 659 for (int i : is) { 660 segSet.add(Pair.sort(new Pair<Node,Node>(w.getNode(i), w.getNode(i+1)))); 661 } 662 for (int i : is) { 663 wnew.addNode(i + 1, n); 664 } 665 666 // If ALT is pressed, a new way should be created and that new way should get 667 // selected. This works everytime unless the ways the nodes get inserted into 668 // are already selected. This is the case when creating a self-overlapping way 669 // but pressing ALT prevents this. Therefore we must de-select the way manually 670 // here so /only/ the new way will be selected after this method finishes. 671 if(alt) { 672 newSelection.add(insertPoint.getKey()); 673 } 674 675 cmds.add(new ChangeCommand(insertPoint.getKey(), wnew)); 676 replacedWays.add(insertPoint.getKey()); 677 reuseWays.add(wnew); 678 } 679 680 adjustNode(segSet, n); 681 } 682 683 /** 684 * Prevent creation of ways that look like this: <----> 685 * This happens if users want to draw a no-exit-sideway from the main way like this: 686 * ^ 687 * |<----> 688 * | 689 * The solution isn't ideal because the main way will end in the side way, which is bad for 690 * navigation software ("drive straight on") but at least easier to fix. Maybe users will fix 691 * it on their own, too. At least it's better than producing an error. 692 * 693 * @param Way the way to check 694 * @param Node the current node (i.e. the one the connection will be made from) 695 * @param Node the target node (i.e. the one the connection will be made to) 696 * @return Boolean True if this would create a selfcontaining way, false otherwise. 697 */ 698 private boolean isSelfContainedWay(Way selectedWay, Node currentNode, Node targetNode) { 699 if(selectedWay != null) { 700 int posn0 = selectedWay.getNodes().indexOf(currentNode); 701 if( posn0 != -1 && // n0 is part of way 702 (posn0 >= 1 && targetNode.equals(selectedWay.getNode(posn0-1))) || // previous node 703 (posn0 < selectedWay.getNodesCount()-1) && targetNode.equals(selectedWay.getNode(posn0+1))) { // next node 704 getCurrentDataSet().setSelected(targetNode); 705 lastUsedNode = targetNode; 706 return true; 707 } 708 } 709 710 return false; 711 } 712 713 /** 714 * Finds a node to continue drawing from. Decision is based upon given node and way. 715 * @param selectedNode Currently selected node, may be null 716 * @param selectedWay Currently selected way, may be null 717 * @return Node if a suitable node is found, null otherwise 718 */ 719 private Node findNodeToContinueFrom(Node selectedNode, Way selectedWay) { 720 // No nodes or ways have been selected, this occurs when a relation 721 // has been selected or the selection is empty 722 if(selectedNode == null && selectedWay == null) 723 return null; 724 725 if (selectedNode == null) { 726 if (selectedWay.isFirstLastNode(lastUsedNode)) 727 return lastUsedNode; 728 729 // We have a way selected, but no suitable node to continue from. Start anew. 730 return null; 731 } 732 733 if (selectedWay == null) 734 return selectedNode; 735 736 if (selectedWay.isFirstLastNode(selectedNode)) 737 return selectedNode; 738 739 // We have a way and node selected, but it's not at the start/end of the way. Start anew. 740 return null; 741 } 742 743 @Override 744 public void mouseDragged(MouseEvent e) { 745 mouseMoved(e); 746 } 747 748 @Override 749 public void mouseMoved(MouseEvent e) { 750 if(!Main.map.mapView.isActiveLayerDrawable()) 751 return; 752 753 // we copy ctrl/alt/shift from the event just in case our global 754 // AWTEvent didn't make it through the security manager. Unclear 755 // if that can ever happen but better be safe. 756 updateKeyModifiers(e); 757 mousePos = e.getPoint(); 758 759 computeHelperLine(); 760 addHighlighting(); 761 } 762 763 /** 764 * This method prepares data required for painting the "helper line" from 765 * the last used position to the mouse cursor. It duplicates some code from 766 * mouseReleased() (FIXME). 767 */ 768 private void computeHelperLine() { 769 MapView mv = Main.map.mapView; 770 if (mousePos == null) { 771 // Don't draw the line. 772 currentMouseEastNorth = null; 773 currentBaseNode = null; 774 return; 775 } 776 777 Collection<OsmPrimitive> selection = getCurrentDataSet().getSelected(); 778 779 Node currentMouseNode = null; 780 mouseOnExistingNode = null; 781 mouseOnExistingWays = new HashSet<Way>(); 782 783 showStatusInfo(-1, -1, -1, snapHelper.isSnapOn()); 784 785 if (!ctrl && mousePos != null) { 786 currentMouseNode = mv.getNearestNode(mousePos, OsmPrimitive.isSelectablePredicate); 787 } 788 789 // We need this for highlighting and we'll only do so if we actually want to re-use 790 // *and* there is no node nearby (because nodes beat ways when re-using) 791 if(!ctrl && currentMouseNode == null) { 792 List<WaySegment> wss = mv.getNearestWaySegments(mousePos, OsmPrimitive.isSelectablePredicate); 793 for(WaySegment ws : wss) { 794 mouseOnExistingWays.add(ws.way); 795 } 796 } 797 798 if (currentMouseNode != null) { 799 // user clicked on node 800 if (selection.isEmpty()) return; 801 currentMouseEastNorth = currentMouseNode.getEastNorth(); 802 mouseOnExistingNode = currentMouseNode; 803 } else { 804 // no node found in clicked area 805 currentMouseEastNorth = mv.getEastNorth(mousePos.x, mousePos.y); 806 } 807 808 determineCurrentBaseNodeAndPreviousNode(selection); 809 if (previousNode == null) { 810 snapHelper.noSnapNow(); 811 } 812 813 if (currentBaseNode == null || currentBaseNode == currentMouseNode) 814 return; // Don't create zero length way segments. 815 816 817 double curHdg = Math.toDegrees(currentBaseNode.getEastNorth() 818 .heading(currentMouseEastNorth)); 819 double baseHdg=-1; 820 if (previousNode != null) { 821 baseHdg = Math.toDegrees(previousNode.getEastNorth() 822 .heading(currentBaseNode.getEastNorth())); 823 } 824 825 snapHelper.checkAngleSnapping(currentMouseEastNorth,baseHdg, curHdg); 826 827 // status bar was filled by snapHelper 828 } 829 830 private void showStatusInfo(double angle, double hdg, double distance, boolean activeFlag) { 831 Main.map.statusLine.setAngle(angle); 832 Main.map.statusLine.activateAnglePanel(activeFlag); 833 Main.map.statusLine.setHeading(hdg); 834 Main.map.statusLine.setDist(distance); 835 } 836 837 /** 838 * Helper function that sets fields currentBaseNode and previousNode 839 * @param selection 840 * uses also lastUsedNode field 841 */ 842 private void determineCurrentBaseNodeAndPreviousNode(Collection<OsmPrimitive> selection) { 843 Node selectedNode = null; 844 Way selectedWay = null; 845 for (OsmPrimitive p : selection) { 846 if (p instanceof Node) { 847 if (selectedNode != null) 848 return; 849 selectedNode = (Node) p; 850 } else if (p instanceof Way) { 851 if (selectedWay != null) 852 return; 853 selectedWay = (Way) p; 854 } 855 } 856 // we are here, if not more than 1 way or node is selected, 857 858 // the node from which we make a connection 859 currentBaseNode = null; 860 previousNode = null; 861 862 if (selectedNode == null) { 863 if (selectedWay == null) 864 return; 865 if (selectedWay.isFirstLastNode(lastUsedNode)) { 866 currentBaseNode = lastUsedNode; 867 if (lastUsedNode == selectedWay.getNode(selectedWay.getNodesCount()-1) && selectedWay.getNodesCount() > 1) { 868 previousNode = selectedWay.getNode(selectedWay.getNodesCount()-2); 869 } 870 } 871 } else if (selectedWay == null) { 872 currentBaseNode = selectedNode; 873 } else if (!selectedWay.isDeleted()) { // fix #7118 874 if (selectedNode == selectedWay.getNode(0)){ 875 currentBaseNode = selectedNode; 876 if (selectedWay.getNodesCount()>1) { 877 previousNode = selectedWay.getNode(1); 878 } 879 } 880 if (selectedNode == selectedWay.lastNode()) { 881 currentBaseNode = selectedNode; 882 if (selectedWay.getNodesCount()>1) { 883 previousNode = selectedWay.getNode(selectedWay.getNodesCount()-2); 884 } 885 } 886 } 887 } 888 889 890 /** 891 * Repaint on mouse exit so that the helper line goes away. 892 */ 893 @Override public void mouseExited(MouseEvent e) { 894 if(!Main.map.mapView.isActiveLayerDrawable()) 895 return; 896 mousePos = e.getPoint(); 897 snapHelper.noSnapNow(); 898 boolean repaintIssued = removeHighlighting(); 899 // force repaint in case snapHelper needs one. If removeHighlighting 900 // caused one already, don???t do it again. 901 if(!repaintIssued) { 902 Main.map.mapView.repaint(); 903 } 904 } 905 906 /** 907 * @return If the node is the end of exactly one way, return this. 908 * <code>null</code> otherwise. 909 */ 910 public static Way getWayForNode(Node n) { 911 Way way = null; 912 for (Way w : Utils.filteredCollection(n.getReferrers(), Way.class)) { 913 if (!w.isUsable() || w.getNodesCount() < 1) { 914 continue; 915 } 916 Node firstNode = w.getNode(0); 917 Node lastNode = w.getNode(w.getNodesCount() - 1); 918 if ((firstNode == n || lastNode == n) && (firstNode != lastNode)) { 919 if (way != null) 920 return null; 921 way = w; 922 } 923 } 924 return way; 925 } 926 927 public Node getCurrentBaseNode() { 928 return currentBaseNode; 929 } 930 931 private static void pruneSuccsAndReverse(List<Integer> is) { 932 HashSet<Integer> is2 = new HashSet<Integer>(); 933 for (int i : is) { 934 if (!is2.contains(i - 1) && !is2.contains(i + 1)) { 935 is2.add(i); 936 } 937 } 938 is.clear(); 939 is.addAll(is2); 940 Collections.sort(is); 941 Collections.reverse(is); 942 } 943 944 /** 945 * Adjusts the position of a node to lie on a segment (or a segment 946 * intersection). 947 * 948 * If one or more than two segments are passed, the node is adjusted 949 * to lie on the first segment that is passed. 950 * 951 * If two segments are passed, the node is adjusted to be at their 952 * intersection. 953 * 954 * No action is taken if no segments are passed. 955 * 956 * @param segs the segments to use as a reference when adjusting 957 * @param n the node to adjust 958 */ 959 private static void adjustNode(Collection<Pair<Node,Node>> segs, Node n) { 960 961 switch (segs.size()) { 962 case 0: 963 return; 964 case 2: 965 // This computes the intersection between 966 // the two segments and adjusts the node position. 967 Iterator<Pair<Node,Node>> i = segs.iterator(); 968 Pair<Node,Node> seg = i.next(); 969 EastNorth A = seg.a.getEastNorth(); 970 EastNorth B = seg.b.getEastNorth(); 971 seg = i.next(); 972 EastNorth C = seg.a.getEastNorth(); 973 EastNorth D = seg.b.getEastNorth(); 974 975 double u=det(B.east() - A.east(), B.north() - A.north(), C.east() - D.east(), C.north() - D.north()); 976 977 // Check for parallel segments and do nothing if they are 978 // In practice this will probably only happen when a way has been duplicated 979 980 if (u == 0) 981 return; 982 983 // q is a number between 0 and 1 984 // It is the point in the segment where the intersection occurs 985 // if the segment is scaled to lenght 1 986 987 double q = det(B.north() - C.north(), B.east() - C.east(), D.north() - C.north(), D.east() - C.east()) / u; 988 EastNorth intersection = new EastNorth( 989 B.east() + q * (A.east() - B.east()), 990 B.north() + q * (A.north() - B.north())); 991 992 int snapToIntersectionThreshold 993 = Main.pref.getInteger("edit.snap-intersection-threshold",10); 994 995 // only adjust to intersection if within snapToIntersectionThreshold pixel of mouse click; otherwise 996 // fall through to default action. 997 // (for semi-parallel lines, intersection might be miles away!) 998 if (Main.map.mapView.getPoint(n).distance(Main.map.mapView.getPoint(intersection)) < snapToIntersectionThreshold) { 999 n.setEastNorth(intersection); 1000 return; 1001 } 1002 default: 1003 EastNorth P = n.getEastNorth(); 1004 seg = segs.iterator().next(); 1005 A = seg.a.getEastNorth(); 1006 B = seg.b.getEastNorth(); 1007 double a = P.distanceSq(B); 1008 double b = P.distanceSq(A); 1009 double c = A.distanceSq(B); 1010 q = (a - b + c) / (2*c); 1011 n.setEastNorth(new EastNorth(B.east() + q * (A.east() - B.east()), B.north() + q * (A.north() - B.north()))); 1012 } 1013 } 1014 1015 // helper for adjustNode 1016 static double det(double a, double b, double c, double d) { 1017 return a * d - b * c; 1018 } 1019 1020 private void tryToMoveNodeOnIntersection(List<WaySegment> wss, Node n) { 1021 if (wss.isEmpty()) 1022 return; 1023 WaySegment ws = wss.get(0); 1024 EastNorth p1=ws.getFirstNode().getEastNorth(); 1025 EastNorth p2=ws.getSecondNode().getEastNorth(); 1026 if (snapHelper.dir2!=null && currentBaseNode!=null) { 1027 EastNorth xPoint = Geometry.getSegmentSegmentIntersection(p1, p2, snapHelper.dir2, currentBaseNode.getEastNorth()); 1028 if (xPoint!=null) { 1029 n.setEastNorth(xPoint); 1030 } 1031 } 1032 } 1033 /** 1034 * Takes the data from computeHelperLine to determine which ways/nodes should be highlighted 1035 * (if feature enabled). Also sets the target cursor if appropriate. It adds the to-be- 1036 * highlighted primitives to newHighlights but does not actually highlight them. This work is 1037 * done in redrawIfRequired. This means, calling addHighlighting() without redrawIfRequired() 1038 * will leave the data in an inconsistent state. 1039 * 1040 * The status bar derives its information from oldHighlights, so in order to update the status 1041 * bar both addHighlighting() and repaintIfRequired() are needed, since former fills newHighlights 1042 * and latter processes them into oldHighlights. 1043 */ 1044 private void addHighlighting() { 1045 newHighlights = new HashSet<OsmPrimitive>(); 1046 1047 // if ctrl key is held ("no join"), don't highlight anything 1048 if (ctrl) { 1049 Main.map.mapView.setNewCursor(cursor, this); 1050 redrawIfRequired(); 1051 return; 1052 } 1053 1054 // This happens when nothing is selected, but we still want to highlight the "target node" 1055 if (mouseOnExistingNode == null && getCurrentDataSet().getSelected().size() == 0 1056 && mousePos != null) { 1057 mouseOnExistingNode = Main.map.mapView.getNearestNode(mousePos, OsmPrimitive.isSelectablePredicate); 1058 } 1059 1060 if (mouseOnExistingNode != null) { 1061 Main.map.mapView.setNewCursor(cursorJoinNode, this); 1062 newHighlights.add(mouseOnExistingNode); 1063 redrawIfRequired(); 1064 return; 1065 } 1066 1067 // Insert the node into all the nearby way segments 1068 if (mouseOnExistingWays.size() == 0) { 1069 Main.map.mapView.setNewCursor(cursor, this); 1070 redrawIfRequired(); 1071 return; 1072 } 1073 1074 Main.map.mapView.setNewCursor(cursorJoinWay, this); 1075 newHighlights.addAll(mouseOnExistingWays); 1076 redrawIfRequired(); 1077 } 1078 1079 /** 1080 * Removes target highlighting from primitives. Issues repaint if required. 1081 * Returns true if a repaint has been issued. 1082 */ 1083 private boolean removeHighlighting() { 1084 newHighlights = new HashSet<OsmPrimitive>(); 1085 return redrawIfRequired(); 1086 } 1087 1088 public void paint(Graphics2D g, MapView mv, Bounds box) { 1089 // sanity checks 1090 if (Main.map.mapView == null || mousePos == null 1091 // don't draw line if we don't know where from or where to 1092 || currentBaseNode == null || currentMouseEastNorth == null 1093 // don't draw line if mouse is outside window 1094 || !Main.map.mapView.getBounds().contains(mousePos)) 1095 return; 1096 1097 Graphics2D g2 = g; 1098 snapHelper.drawIfNeeded(g2,mv); 1099 if (!drawHelperLine || wayIsFinished || shift) 1100 return; 1101 1102 if (!snapHelper.isActive()) { // else use color and stoke from snapHelper.draw 1103 g2.setColor(selectedColor); 1104 g2.setStroke(new BasicStroke(3, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND)); 1105 } else if (!snapHelper.drawConstructionGeometry) 1106 return; 1107 GeneralPath b = new GeneralPath(); 1108 Point p1=mv.getPoint(currentBaseNode); 1109 Point p2=mv.getPoint(currentMouseEastNorth); 1110 1111 double t = Math.atan2(p2.y-p1.y, p2.x-p1.x) + Math.PI; 1112 1113 b.moveTo(p1.x,p1.y); b.lineTo(p2.x, p2.y); 1114 1115 // if alt key is held ("start new way"), draw a little perpendicular line 1116 if (alt) { 1117 b.moveTo((int)(p1.x + 8*Math.cos(t+PHI)), (int)(p1.y + 8*Math.sin(t+PHI))); 1118 b.lineTo((int)(p1.x + 8*Math.cos(t-PHI)), (int)(p1.y + 8*Math.sin(t-PHI))); 1119 } 1120 1121 g2.draw(b); 1122 g2.setStroke(new BasicStroke(1)); 1123 } 1124 1125 @Override 1126 public String getModeHelpText() { 1127 String rv = ""; 1128 /* 1129 * No modifiers: all (Connect, Node Re-Use, Auto-Weld) 1130 * CTRL: disables node re-use, auto-weld 1131 * Shift: do not make connection 1132 * ALT: make connection but start new way in doing so 1133 */ 1134 1135 /* 1136 * Status line text generation is split into two parts to keep it maintainable. 1137 * First part looks at what will happen to the new node inserted on click and 1138 * the second part will look if a connection is made or not. 1139 * 1140 * Note that this help text is not absolutely accurate as it doesn't catch any special 1141 * cases (e.g. when preventing <---> ways). The only special that it catches is when 1142 * a way is about to be finished. 1143 * 1144 * First check what happens to the new node. 1145 */ 1146 1147 // oldHighlights stores the current highlights. If this 1148 // list is empty we can assume that we won't do any joins 1149 if (ctrl || oldHighlights.isEmpty()) { 1150 rv = tr("Create new node."); 1151 } else { 1152 // oldHighlights may store a node or way, check if it's a node 1153 OsmPrimitive x = oldHighlights.iterator().next(); 1154 if (x instanceof Node) { 1155 rv = tr("Select node under cursor."); 1156 } else { 1157 rv = trn("Insert new node into way.", "Insert new node into {0} ways.", 1158 oldHighlights.size(), oldHighlights.size()); 1159 } 1160 } 1161 1162 /* 1163 * Check whether a connection will be made 1164 */ 1165 if (currentBaseNode != null && !wayIsFinished) { 1166 if (alt) { 1167 rv += " " + tr("Start new way from last node."); 1168 } else { 1169 rv += " " + tr("Continue way from last node."); 1170 } 1171 if (snapHelper.isSnapOn()) { 1172 rv += " "+ tr("Angle snapping active."); 1173 } 1174 } 1175 1176 Node n = mouseOnExistingNode; 1177 /* 1178 * Handle special case: Highlighted node == selected node => finish drawing 1179 */ 1180 if (n != null && getCurrentDataSet() != null && getCurrentDataSet().getSelectedNodes().contains(n)) { 1181 if (wayIsFinished) { 1182 rv = tr("Select node under cursor."); 1183 } else { 1184 rv = tr("Finish drawing."); 1185 } 1186 } 1187 1188 /* 1189 * Handle special case: Self-Overlapping or closing way 1190 */ 1191 if (getCurrentDataSet() != null && getCurrentDataSet().getSelectedWays().size() > 0 && !wayIsFinished && !alt) { 1192 Way w = getCurrentDataSet().getSelectedWays().iterator().next(); 1193 for (Node m : w.getNodes()) { 1194 if (m.equals(mouseOnExistingNode) || mouseOnExistingWays.contains(w)) { 1195 rv += " " + tr("Finish drawing."); 1196 break; 1197 } 1198 } 1199 } 1200 return rv; 1201 } 1202 1203 /** 1204 * Get selected primitives, while draw action is in progress. 1205 * 1206 * While drawing a way, technically the last node is selected. 1207 * This is inconvenient when the user tries to add tags to the 1208 * way using a keyboard shortcut. In that case, this method returns 1209 * the current way as selection, to work around this issue. 1210 * Otherwise the normal selection of the current data layer is returned. 1211 */ 1212 public Collection<OsmPrimitive> getInProgressSelection() { 1213 DataSet ds = getCurrentDataSet(); 1214 if (ds == null) return null; 1215 if (currentBaseNode != null && !ds.getSelected().isEmpty()) { 1216 Way continueFrom = getWayForNode(currentBaseNode); 1217 if (alt && continueFrom != null) 1218 return Collections.<OsmPrimitive>singleton(continueFrom); 1219 } 1220 return ds.getSelected(); 1221 } 1222 1223 @Override 1224 public boolean layerIsSupported(Layer l) { 1225 return l instanceof OsmDataLayer; 1226 } 1227 1228 @Override 1229 protected void updateEnabledState() { 1230 setEnabled(getEditLayer() != null); 1231 } 1232 1233 @Override 1234 public void destroy() { 1235 super.destroy(); 1236 snapChangeAction.destroy(); 1237 } 1238 1239 public class BackSpaceAction extends AbstractAction { 1240 1241 @Override 1242 public void actionPerformed(ActionEvent e) { 1243 Main.main.undoRedo.undo(); 1244 Node n=null; 1245 Command lastCmd=Main.main.undoRedo.commands.peekLast(); 1246 if (lastCmd==null) return; 1247 for (OsmPrimitive p: lastCmd.getParticipatingPrimitives()) { 1248 if (p instanceof Node) { 1249 if (n==null) { 1250 n=(Node) p; // found one node 1251 wayIsFinished=false; 1252 } else { 1253 // if more than 1 node were affected by previous command, 1254 // we have no way to continue, so we forget about found node 1255 n=null; 1256 break; 1257 } 1258 } 1259 } 1260 // select last added node - maybe we will continue drawing from it 1261 if (n!=null) { 1262 getCurrentDataSet().addSelected(n); 1263 } 1264 } 1265 } 1266 1267 private class SnapHelper { 1268 boolean snapOn; // snapping is turned on 1269 1270 private boolean active; // snapping is active for current mouse position 1271 private boolean fixed; // snap angle is fixed 1272 private boolean absoluteFix; // snap angle is absolute 1273 1274 private boolean drawConstructionGeometry; 1275 private boolean showProjectedPoint; 1276 private boolean showAngle; 1277 1278 private boolean snapToProjections; 1279 1280 EastNorth dir2; 1281 EastNorth projected; 1282 String labelText; 1283 double lastAngle; 1284 1285 double customBaseHeading=-1; // angle of base line, if not last segment) 1286 private EastNorth segmentPoint1; // remembered first point of base segment 1287 private EastNorth segmentPoint2; // remembered second point of base segment 1288 private EastNorth projectionSource; // point that we are projecting to the line 1289 1290 double snapAngles[]; 1291 double snapAngleTolerance; 1292 1293 double pe,pn; // (pe,pn) - direction of snapping line 1294 double e0,n0; // (e0,n0) - origin of snapping line 1295 1296 final String fixFmt="%d "+tr("FIX"); 1297 Color snapHelperColor; 1298 private Color highlightColor; 1299 1300 private Stroke normalStroke; 1301 private Stroke helperStroke; 1302 private Stroke highlightStroke; 1303 1304 JCheckBoxMenuItem checkBox; 1305 1306 public void init() { 1307 snapOn=false; 1308 checkBox.setState(snapOn); 1309 fixed=false; absoluteFix=false; 1310 1311 Collection<String> angles = Main.pref.getCollection("draw.anglesnap.angles", 1312 Arrays.asList("0","30","45","60","90","120","135","150","180")); 1313 1314 snapAngles = new double[2*angles.size()]; 1315 int i=0; 1316 for (String s: angles) { 1317 try { 1318 snapAngles[i] = Double.parseDouble(s); i++; 1319 snapAngles[i] = 360-Double.parseDouble(s); i++; 1320 } catch (NumberFormatException e) { 1321 System.err.println("Warning: incorrect number in draw.anglesnap.angles preferences: "+s); 1322 snapAngles[i]=0;i++; 1323 snapAngles[i]=0;i++; 1324 } 1325 } 1326 snapAngleTolerance = Main.pref.getDouble("draw.anglesnap.tolerance", 5.0); 1327 drawConstructionGeometry = Main.pref.getBoolean("draw.anglesnap.drawConstructionGeometry", true); 1328 showProjectedPoint = Main.pref.getBoolean("draw.anglesnap.drawProjectedPoint", true); 1329 snapToProjections = Main.pref.getBoolean("draw.anglesnap.projectionsnap", true); 1330 1331 showAngle = Main.pref.getBoolean("draw.anglesnap.showAngle", true); 1332 useRepeatedShortcut = Main.pref.getBoolean("draw.anglesnap.toggleOnRepeatedA", true); 1333 1334 normalStroke = new BasicStroke(3, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND); 1335 snapHelperColor = Main.pref.getColor(marktr("draw angle snap"), Color.ORANGE); 1336 1337 highlightColor = Main.pref.getColor(marktr("draw angle snap highlight"), 1338 new Color(Color.ORANGE.getRed(),Color.ORANGE.getGreen(),Color.ORANGE.getBlue(),128)); 1339 highlightStroke = new BasicStroke(10, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND); 1340 1341 float dash1[] = { 4.0f }; 1342 helperStroke = new BasicStroke(1.0f, BasicStroke.CAP_BUTT, 1343 BasicStroke.JOIN_MITER, 10.0f, dash1, 0.0f); 1344 } 1345 1346 public void saveAngles(String ... angles) { 1347 Main.pref.putCollection("draw.anglesnap.angles", Arrays.asList(angles)); 1348 } 1349 1350 public void setMenuCheckBox(JCheckBoxMenuItem checkBox) { 1351 this.checkBox = checkBox; 1352 } 1353 1354 public void drawIfNeeded(Graphics2D g2, MapView mv) { 1355 if (!snapOn || !active) 1356 return; 1357 Point p1=mv.getPoint(currentBaseNode); 1358 Point p2=mv.getPoint(dir2); 1359 Point p3=mv.getPoint(projected); 1360 GeneralPath b; 1361 if (drawConstructionGeometry) { 1362 g2.setColor(snapHelperColor); 1363 g2.setStroke(helperStroke); 1364 1365 b = new GeneralPath(); 1366 if (absoluteFix) { 1367 b.moveTo(p2.x,p2.y); 1368 b.lineTo(2*p1.x-p2.x,2*p1.y-p2.y); // bi-directional line 1369 } else { 1370 b.moveTo(p2.x,p2.y); 1371 b.lineTo(p3.x,p3.y); 1372 } 1373 g2.draw(b); 1374 } 1375 if (projectionSource != null) { 1376 g2.setColor(snapHelperColor); 1377 g2.setStroke(helperStroke); 1378 b = new GeneralPath(); 1379 b.moveTo(p3.x,p3.y); 1380 Point pp=mv.getPoint(projectionSource); 1381 b.lineTo(pp.x,pp.y); 1382 g2.draw(b); 1383 } 1384 1385 if (customBaseHeading >= 0) { 1386 g2.setColor(highlightColor); 1387 g2.setStroke(highlightStroke); 1388 b = new GeneralPath(); 1389 Point pp1=mv.getPoint(segmentPoint1); 1390 Point pp2=mv.getPoint(segmentPoint2); 1391 b.moveTo(pp1.x,pp1.y); 1392 b.lineTo(pp2.x,pp2.y); 1393 g2.draw(b); 1394 } 1395 1396 g2.setColor(selectedColor); 1397 g2.setStroke(normalStroke); 1398 b = new GeneralPath(); 1399 b.moveTo(p1.x,p1.y); 1400 b.lineTo(p3.x,p3.y); 1401 g2.draw(b); 1402 1403 g2.drawString(labelText, p3.x-5, p3.y+20); 1404 if (showProjectedPoint) { 1405 g2.setStroke(normalStroke); 1406 g2.drawOval(p3.x-5, p3.y-5, 10, 10); // projected point 1407 } 1408 1409 g2.setColor(snapHelperColor); 1410 g2.setStroke(helperStroke); 1411 } 1412 1413 /* If mouse position is close to line at 15-30-45-... angle, remembers this direction 1414 */ 1415 public void checkAngleSnapping(EastNorth currentEN, double baseHeading, double curHeading) { 1416 EastNorth p0 = currentBaseNode.getEastNorth(); 1417 EastNorth snapPoint = currentEN; 1418 double angle = -1; 1419 1420 double activeBaseHeading = (customBaseHeading>=0)? customBaseHeading : baseHeading; 1421 1422 if (snapOn && (activeBaseHeading>=0)) { 1423 angle = curHeading - activeBaseHeading; 1424 if (angle < 0) { 1425 angle+=360; 1426 } 1427 if (angle > 360) { 1428 angle=0; 1429 } 1430 1431 double nearestAngle; 1432 if (fixed) { 1433 nearestAngle = lastAngle; // if direction is fixed use previous angle 1434 active = true; 1435 } else { 1436 nearestAngle = getNearestAngle(angle); 1437 if (getAngleDelta(nearestAngle, angle) < snapAngleTolerance) { 1438 active = (customBaseHeading>=0)? true : Math.abs(nearestAngle - 180) > 1e-3; 1439 // if angle is to previous segment, exclude 180 degrees 1440 lastAngle = nearestAngle; 1441 } else { 1442 active=false; 1443 } 1444 } 1445 1446 if (active) { 1447 double phi; 1448 e0 = p0.east(); 1449 n0 = p0.north(); 1450 buildLabelText((nearestAngle<=180) ? nearestAngle : nearestAngle-360); 1451 1452 phi = (nearestAngle + activeBaseHeading) * Math.PI / 180; 1453 // (pe,pn) - direction of snapping line 1454 pe = Math.sin(phi); 1455 pn = Math.cos(phi); 1456 double scale = 20 * Main.map.mapView.getDist100Pixel(); 1457 dir2 = new EastNorth(e0 + scale * pe, n0 + scale * pn); 1458 snapPoint = getSnapPoint(currentEN); 1459 } else { 1460 noSnapNow(); 1461 } 1462 } 1463 1464 // find out the distance, in metres, between the base point and projected point 1465 LatLon mouseLatLon = Main.map.mapView.getProjection().eastNorth2latlon(snapPoint); 1466 double distance = currentBaseNode.getCoor().greatCircleDistance(mouseLatLon); 1467 double hdg = Math.toDegrees(p0.heading(snapPoint)); 1468 // heading of segment from current to calculated point, not to mouse position 1469 1470 if (baseHeading >=0 ) { // there is previous line segment with some heading 1471 angle = hdg - baseHeading; 1472 if (angle < 0) { 1473 angle+=360; 1474 } 1475 if (angle > 360) { 1476 angle=0; 1477 } 1478 } 1479 showStatusInfo(angle, hdg, distance, isSnapOn()); 1480 } 1481 1482 private void buildLabelText(double nearestAngle) { 1483 if (showAngle) { 1484 if (fixed) { 1485 if (absoluteFix) { 1486 labelText = "="; 1487 } else { 1488 labelText = String.format(fixFmt, (int) nearestAngle); 1489 } 1490 } else { 1491 labelText = String.format("%d", (int) nearestAngle); 1492 } 1493 } else { 1494 if (fixed) { 1495 if (absoluteFix) { 1496 labelText = "="; 1497 } else { 1498 labelText = String.format(tr("FIX"), 0); 1499 } 1500 } else { 1501 labelText = ""; 1502 } 1503 } 1504 } 1505 1506 public EastNorth getSnapPoint(EastNorth p) { 1507 if (!active) 1508 return p; 1509 double de=p.east()-e0; 1510 double dn=p.north()-n0; 1511 double l = de*pe+dn*pn; 1512 double delta = Main.map.mapView.getDist100Pixel()/20; 1513 if (!absoluteFix && l<delta) { 1514 active=false; 1515 return p; 1516 } // do not go backward! 1517 1518 projectionSource=null; 1519 if (snapToProjections) { 1520 DataSet ds = getCurrentDataSet(); 1521 Collection<Way> selectedWays = ds.getSelectedWays(); 1522 if (selectedWays.size()==1) { 1523 Way w = selectedWays.iterator().next(); 1524 Collection <EastNorth> pointsToProject = new ArrayList<EastNorth>(); 1525 if (w.getNodesCount()<1000) { 1526 for (Node n: w.getNodes()) { 1527 pointsToProject.add(n.getEastNorth()); 1528 } 1529 } 1530 if (customBaseHeading >=0 ) { 1531 pointsToProject.add(segmentPoint1); 1532 pointsToProject.add(segmentPoint2); 1533 } 1534 EastNorth enOpt=null; 1535 double dOpt=1e5; 1536 for (EastNorth en: pointsToProject) { // searching for besht projection 1537 double l1 = (en.east()-e0)*pe+(en.north()-n0)*pn; 1538 double d1 = Math.abs(l1-l); 1539 if (d1 < delta && d1 < dOpt) { 1540 l=l1; 1541 enOpt = en; 1542 dOpt = d1; 1543 } 1544 } 1545 if (enOpt!=null) { 1546 projectionSource = enOpt; 1547 } 1548 } 1549 } 1550 return projected = new EastNorth(e0+l*pe, n0+l*pn); 1551 } 1552 1553 1554 public void noSnapNow() { 1555 active=false; 1556 dir2=null; projected=null; 1557 labelText=null; 1558 } 1559 1560 public void setBaseSegment(WaySegment seg) { 1561 if (seg==null) return; 1562 segmentPoint1=seg.getFirstNode().getEastNorth(); 1563 segmentPoint2=seg.getSecondNode().getEastNorth(); 1564 1565 double hdg = segmentPoint1.heading(segmentPoint2); 1566 hdg=Math.toDegrees(hdg); 1567 if (hdg<0) { 1568 hdg+=360; 1569 } 1570 if (hdg>360) { 1571 hdg-=360; 1572 } 1573 //fixed=true; 1574 //absoluteFix=true; 1575 customBaseHeading=hdg; 1576 } 1577 1578 private void nextSnapMode() { 1579 if (snapOn) { 1580 // turn off snapping if we are in fixed mode or no actile snapping line exist 1581 if (fixed || !active) { snapOn=false; unsetFixedMode(); } else { 1582 setFixedMode(); 1583 } 1584 } else { 1585 snapOn=true; 1586 unsetFixedMode(); 1587 } 1588 checkBox.setState(snapOn); 1589 customBaseHeading=-1; 1590 } 1591 1592 private void enableSnapping() { 1593 snapOn = true; 1594 checkBox.setState(snapOn); 1595 customBaseHeading=-1; 1596 unsetFixedMode(); 1597 } 1598 1599 private void toggleSnapping() { 1600 snapOn = !snapOn; 1601 checkBox.setState(snapOn); 1602 customBaseHeading=-1; 1603 unsetFixedMode(); 1604 } 1605 1606 public void setFixedMode() { 1607 if (active) { 1608 fixed=true; 1609 } 1610 } 1611 1612 1613 public void unsetFixedMode() { 1614 fixed=false; 1615 absoluteFix=false; 1616 lastAngle=0; 1617 active=false; 1618 } 1619 1620 public boolean isActive() { 1621 return active; 1622 } 1623 1624 public boolean isSnapOn() { 1625 return snapOn; 1626 } 1627 1628 private double getNearestAngle(double angle) { 1629 double delta,minDelta=1e5, bestAngle=0.0; 1630 for (int i=0; i < snapAngles.length; i++) { 1631 delta = getAngleDelta(angle,snapAngles[i]); 1632 if (delta < minDelta) { 1633 minDelta=delta; 1634 bestAngle=snapAngles[i]; 1635 } 1636 } 1637 if (Math.abs(bestAngle-360) < 1e-3) { 1638 bestAngle=0; 1639 } 1640 return bestAngle; 1641 } 1642 1643 private double getAngleDelta(double a, double b) { 1644 double delta = Math.abs(a-b); 1645 if (delta>180) 1646 return 360-delta; 1647 else 1648 return delta; 1649 } 1650 1651 private void unFixOrTurnOff() { 1652 if (absoluteFix) { 1653 unsetFixedMode(); 1654 } else { 1655 toggleSnapping(); 1656 } 1657 } 1658 1659 MouseListener anglePopupListener = new PopupMenuLauncher( new JPopupMenu() { 1660 JCheckBoxMenuItem repeatedCb = new JCheckBoxMenuItem(new AbstractAction(tr("Toggle snapping by {0}", getShortcut().getKeyText())){ 1661 public void actionPerformed(ActionEvent e) { 1662 boolean sel=((JCheckBoxMenuItem) e.getSource()).getState(); 1663 Main.pref.put("draw.anglesnap.toggleOnRepeatedA", sel); 1664 init(); 1665 } 1666 }); 1667 JCheckBoxMenuItem helperCb = new JCheckBoxMenuItem(new AbstractAction(tr("Show helper geometry")){ 1668 public void actionPerformed(ActionEvent e) { 1669 boolean sel=((JCheckBoxMenuItem) e.getSource()).getState(); 1670 Main.pref.put("draw.anglesnap.drawConstructionGeometry", sel); 1671 Main.pref.put("draw.anglesnap.drawProjectedPoint", sel); 1672 Main.pref.put("draw.anglesnap.showAngle", sel); 1673 init(); 1674 enableSnapping(); 1675 } 1676 }); 1677 JCheckBoxMenuItem projectionCb = new JCheckBoxMenuItem(new AbstractAction(tr("Snap to node projections")){ 1678 public void actionPerformed(ActionEvent e) { 1679 boolean sel=((JCheckBoxMenuItem) e.getSource()).getState(); 1680 Main.pref.put("draw.anglesnap.projectionsnap", sel); 1681 init(); 1682 enableSnapping(); 1683 } 1684 }); 1685 { 1686 helperCb.setState(Main.pref.getBoolean("draw.anglesnap.drawConstructionGeometry",true)); 1687 projectionCb.setState(Main.pref.getBoolean("draw.anglesnap.projectionsnapgvff",true)); 1688 repeatedCb.setState(Main.pref.getBoolean("draw.anglesnap.toggleOnRepeatedA",true)); 1689 add(repeatedCb); 1690 add(helperCb); 1691 add(projectionCb);; 1692 add(new AbstractAction(tr("Disable")) { 1693 public void actionPerformed(ActionEvent e) { 1694 saveAngles("180"); 1695 init(); 1696 enableSnapping(); 1697 } 1698 }); 1699 add(new AbstractAction(tr("0,90,...")) { 1700 public void actionPerformed(ActionEvent e) { 1701 saveAngles("0","90","180"); 1702 init(); 1703 enableSnapping(); 1704 } 1705 }); 1706 add(new AbstractAction(tr("0,45,90,...")) { 1707 public void actionPerformed(ActionEvent e) { 1708 saveAngles("0","45","90","135","180"); 1709 init(); 1710 enableSnapping(); 1711 } 1712 }); 1713 add(new AbstractAction(tr("0,30,45,60,90,...")) { 1714 public void actionPerformed(ActionEvent e) { 1715 saveAngles("0","30","45","60","90","120","135","150","180"); 1716 init(); 1717 enableSnapping(); 1718 } 1719 }); 1720 } 1721 }) { 1722 @Override 1723 public void mouseClicked(MouseEvent e) { 1724 super.mouseClicked(e); 1725 if (e.getButton() == MouseEvent.BUTTON1) { 1726 toggleSnapping(); 1727 updateStatusLine(); 1728 } 1729 } 1730 }; 1731 } 1732 1733 private class SnapChangeAction extends JosmAction { 1734 public SnapChangeAction() { 1735 super(tr("Angle snapping"), "anglesnap", 1736 tr("Switch angle snapping mode while drawing"), null, false); 1737 putValue("help", ht("/Action/Draw/AngleSnap")); 1738 } 1739 1740 @Override 1741 public void actionPerformed(ActionEvent e) { 1742 if (snapHelper!=null) { 1743 snapHelper.toggleSnapping(); 1744 } 1745 } 1746 } 1747 }