bundles/org.simantics.modeling/src/org/simantics/modeling/SCLScenegraph.java

   1 package org.simantics.modeling;
   2
   3 import java.awt.BasicStroke;
   4 import java.awt.Dimension;
   5 import java.awt.RenderingHints;
   6 import java.awt.RenderingHints.Key;
   7 import java.awt.geom.AffineTransform;
   8 import java.awt.geom.Rectangle2D;
   9 import java.io.ByteArrayOutputStream;
  10 import java.io.OutputStreamWriter;
  11 import java.util.ArrayList;
  12 import java.util.Arrays;
  13 import java.util.Collection;
  14 import java.util.HashMap;
  15 import java.util.HashSet;
  16 import java.util.List;
  17 import java.util.Map;
  18 import java.util.Random;
  19 import java.util.Set;
  20 import java.util.UUID;
  21 import java.util.function.Function;
  22 import java.util.stream.Collectors;
  23
  24 import javax.xml.transform.OutputKeys;
  25 import javax.xml.transform.Transformer;
  26 import javax.xml.transform.TransformerFactory;
  27 import javax.xml.transform.dom.DOMSource;
  28 import javax.xml.transform.stream.StreamResult;
  29
  30 import org.apache.batik.dom.GenericDOMImplementation;
  31 import org.apache.batik.svggen.SVGGeneratorContext;
  32 import org.apache.batik.svggen.SVGGraphics2D;
  33 import org.simantics.Simantics;
  34 import org.simantics.datatypes.literal.GUID;
  35 import org.simantics.db.ReadGraph;
  36 import org.simantics.db.Resource;
  37 import org.simantics.db.common.request.IndexRoot;
  38 import org.simantics.db.common.request.ResourceRead;
  39 import org.simantics.db.common.request.UnaryRead;
  40 import org.simantics.db.exception.DatabaseException;
  41 import org.simantics.db.exception.RuntimeDatabaseException;
  42 import org.simantics.db.layer0.variable.Variables;
  43 import org.simantics.diagram.elements.DecorationSVGNode;
  44 import org.simantics.diagram.elements.DiagramNodeUtil;
  45 import org.simantics.diagram.elements.TextGridNode;
  46 import org.simantics.diagram.elements.TextNode;
  47 import org.simantics.diagram.stubs.DiagramResource;
  48 import org.simantics.g2d.canvas.ICanvasContext;
  49 import org.simantics.g2d.diagram.DiagramHints;
  50 import org.simantics.g2d.diagram.IDiagram;
  51 import org.simantics.g2d.diagram.handler.DataElementMap;
  52 import org.simantics.g2d.diagram.participant.Selection;
  53 import org.simantics.g2d.element.IElement;
  54 import org.simantics.g2d.scenegraph.ICanvasSceneGraphProvider;
  55 import org.simantics.g2d.utils.CanvasUtils;
  56 import org.simantics.layer0.Layer0;
  57 import org.simantics.scenegraph.INode;
  58 import org.simantics.scenegraph.ParentNode;
  59 import org.simantics.scenegraph.g2d.G2DParentNode;
  60 import org.simantics.scenegraph.g2d.G2DRenderingHints;
  61 import org.simantics.scenegraph.g2d.G2DSceneGraph;
  62 import org.simantics.scenegraph.g2d.IG2DNode;
  63 import org.simantics.scenegraph.g2d.IG2DNodeVisitor;
  64 import org.simantics.scenegraph.g2d.events.command.Commands;
  65 import org.simantics.scenegraph.g2d.nodes.BackgroundNode;
  66 import org.simantics.scenegraph.g2d.nodes.BoundsNode;
  67 import org.simantics.scenegraph.g2d.nodes.ConnectionNode;
  68 import org.simantics.scenegraph.g2d.nodes.DataNode;
  69 import org.simantics.scenegraph.g2d.nodes.NavigationNode;
  70 import org.simantics.scenegraph.g2d.nodes.SVGNode;
  71 import org.simantics.scenegraph.g2d.nodes.SelectionNode;
  72 import org.simantics.scenegraph.g2d.nodes.SingleElementNode;
  73 import org.simantics.scenegraph.g2d.nodes.connection.RouteGraphNode;
  74 import org.simantics.scenegraph.g2d.nodes.spatial.RTreeNode;
  75 import org.simantics.scenegraph.utils.NodeUtil;
  76 import org.simantics.scl.runtime.function.Function1;
  77 import org.simantics.scl.runtime.tuple.Tuple2;
  78 import org.simantics.trend.impl.ItemNode;
  79 import org.simantics.utils.threads.ThreadUtils;
  80 import org.slf4j.Logger;
  81 import org.slf4j.LoggerFactory;
  82 import org.w3c.dom.DOMImplementation;
  83 import org.w3c.dom.Document;
  84 import org.w3c.dom.Element;
  85 import org.w3c.dom.NodeList;
  86
  87 public class SCLScenegraph {
  88
  89         private static final Logger LOGGER = LoggerFactory.getLogger(SCLScenegraph.class);
  90
  91         private static final String MAIN_SECTION = "main";
  92         private static final String SELECTION_SECTION = "selection";
  93         private static final String SELECTION_MASK_SECTION = "selectionMask";
  94
  95         private static final String[] ALL_SECTIONS = { MAIN_SECTION, SELECTION_SECTION, SELECTION_MASK_SECTION };
  96
  97         @Deprecated
  98         public static ICanvasSceneGraphProvider getICanvasSceneGraphProvider(Resource model, Resource diagram, String diagramRVI) throws DatabaseException, InterruptedException {
  99                 ICanvasSceneGraphProvider provider = DiagramNodeUtil.loadSceneGraphProvider(model, diagram, diagramRVI);
 100                 return provider;
 101         }
 102
 103         @Deprecated
 104         public static void disposeSceneGraphProvider(ICanvasSceneGraphProvider provider) {
 105                 provider.dispose();
 106         }
 107
 108     public static <T> T doWithICanvasSceneGraphProvider(Resource diagram, Function1<ICanvasSceneGraphProvider, T> func) throws DatabaseException {
 109         return doWithICanvasSceneGraphProvider(diagram, (Function<ICanvasSceneGraphProvider, T>) provider -> func.apply(provider));
 110     }
 111
 112     public static <T> T doWithICanvasSceneGraphProvider(Resource diagram, Function<ICanvasSceneGraphProvider, T> func) throws DatabaseException {
 113         Tuple2 result = Simantics.getSession().syncRequest(new ResourceRead<Tuple2>(diagram) {
 114
 115             @Override
 116             public Tuple2 perform(ReadGraph graph) throws DatabaseException {
 117                 Resource indexRoot = graph.syncRequest(new IndexRoot(resource));
 118                 String diagramRVI = Variables.getRVI(graph, resource);
 119                 return new Tuple2(indexRoot, diagramRVI);
 120             }
 121         });
 122         ICanvasSceneGraphProvider provider = DiagramNodeUtil.loadSceneGraphProvider((Resource) result.c0, diagram, (String) result.c1);
 123         try {
 124             return func.apply(provider);
 125         } finally {
 126             provider.dispose();
 127         }
 128     }
 129
 130     public static <T> T doWithCanvasContext(Resource diagram, Function1<ICanvasContext, T> func) throws DatabaseException {
 131         return doWithCanvasContext(diagram, (Function<ICanvasContext, T>) canvasContext -> func.apply(canvasContext));
 132     }
 133
 134     public static <T> T doWithCanvasContext(Resource diagram, Function<ICanvasContext, T> func) throws DatabaseException {
 135         return doWithICanvasSceneGraphProvider(diagram, (Function<ICanvasSceneGraphProvider, T>) provider -> func.apply(provider.getCanvasContext()));
 136     }
 137
 138         public static String getNodeTransform(ICanvasContext ctx, String name) {
 139
 140                 Set<TextNode> texts = NodeUtil.collectNodes(ctx.getSceneGraph(), TextNode.class);
 141                 for (TextNode text : texts) {
 142                         String nodeName = NodeUtil.getNodeName(text);
 143                         if (nodeName.equals(name)) {
 144                                 String transform = text.getTransform().toString();
 145                                 return transform;
 146                         }
 147                 }
 148                 return "No node found";
 149         }
 150
 151         public static String getNodeText(ICanvasContext ctx, String name) {
 152
 153                 Set<TextNode> texts = NodeUtil.collectNodes(ctx.getSceneGraph(), TextNode.class);
 154                 for (TextNode text : texts) {
 155                         String nodeName = NodeUtil.getNodeName(text);
 156                         if (nodeName.equals(name)) {
 157                                 String texti = text.getText();
 158                                 return texti;
 159                         }
 160                 }
 161                 return "No node found";
 162         }
 163
 164         public static String getNodeCount(ICanvasContext ctx) {
 165                 G2DSceneGraph g2 = ctx.getSceneGraph();
 166                 int amount = NodeUtil.countTreeNodes(g2);
 167                 return "Node count: " + amount;
 168         }
 169
 170     public static String getAllNodes (ICanvasContext ctx) {
 171
 172         Set<G2DSceneGraph> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), G2DSceneGraph.class);
 173         int amount = g2.size() +1;
 174         return "All nodes: " + amount;
 175     }
 176
 177     public static String getBoundsNodes (ICanvasContext ctx) {
 178
 179         Set<BoundsNode> bn = NodeUtil.collectNodes(ctx.getSceneGraph(), BoundsNode.class);
 180         int amount = bn.size();
 181         return "BoundsNodes: " + amount;
 182     }
 183
 184     public static String getBackgroundNodes (ICanvasContext ctx) {
 185
 186         Set<BackgroundNode> bg = NodeUtil.collectNodes(ctx.getSceneGraph(), BackgroundNode.class);
 187         int amount = bg.size();
 188         return "BackgroundNodes: " + amount;
 189     }
 190
 191     public static String getDataNodes (ICanvasContext ctx) {
 192
 193         Set<DataNode> dn = NodeUtil.collectNodes(ctx.getSceneGraph(), DataNode.class);
 194         int amount = dn.size();
 195         return "DataNodes: " + amount;
 196     }
 197
 198     public static String getNavigationNodes (ICanvasContext ctx) {
 199
 200         Set<NavigationNode> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), NavigationNode.class);
 201         int amount = g2.size();
 202         return "NavigationNodes: " + amount;
 203     }
 204
 205     public static String getParentNodes (ICanvasContext ctx) {
 206
 207         Set<G2DParentNode> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), G2DParentNode.class);
 208         int amount = g2.size();
 209         return "ParentNodes: " + amount;
 210     }
 211
 212     public static String getDecorationNodes (ICanvasContext ctx) {
 213
 214         Set<DecorationSVGNode> deco = NodeUtil.collectNodes(ctx.getSceneGraph(), DecorationSVGNode.class);
 215         int amount = deco.size();
 216         return "DecorationNodes: " + amount;
 217     }
 218
 219     public static String getSingleElementNodes (ICanvasContext ctx) {
 220
 221         Set<SingleElementNode> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), SingleElementNode.class);
 222         int amount = g2.size();
 223         return "SingleElementNodes: " + amount;
 224     }
 225
 226     public static String getConnectionNodes (ICanvasContext ctx) {
 227
 228         Set<ConnectionNode> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), ConnectionNode.class);
 229         int amount = g2.size();
 230         return "ConnectionNodes: " + amount;
 231     }
 232
 233     public static String getTextNodes (ICanvasContext ctx) {
 234
 235         Set<TextNode> tn = NodeUtil.collectNodes(ctx.getSceneGraph(), TextNode.class);
 236         Set<TextGridNode> tgn = NodeUtil.collectNodes(ctx.getSceneGraph(), TextGridNode.class);
 237         int amount = tn.size() + tgn.size();
 238         return "TextNodes: " + amount;
 239     }
 240
 241     public static String getItemNodes (ICanvasContext ctx) {
 242
 243         Set<ItemNode> item = NodeUtil.collectNodes(ctx.getSceneGraph(), ItemNode.class);
 244         int amount = item.size();
 245         return "ItemNodes: " + amount;
 246     }
 247
 248     public static String editNodeText (ICanvasContext ctx, String module, String previous_value, String new_value) {
 249
 250         Set<TextNode> textGridNodes = NodeUtil.collectNodes(ctx.getSceneGraph(), TextNode.class);
 251         for (TextNode modulenode : textGridNodes) {
 252                 if (module.equals(modulenode.getText())) {
 253                         //System.out.println("Module what we were looking for: " + module);
 254                         //System.out.println("Modulenode: " + modulenode.getText());
 255
 256                         ParentNode<?> parentnode = modulenode.getParent();
 257                         //System.out.println("Parentnode: " + parentnode);
 258
 259                         Collection<TextNode> textnodes = (Collection<TextNode>) parentnode.getNodes();
 260                         for (TextNode valuenode : textnodes) {
 261                                 if (previous_value.equals(valuenode.getText())) {
 262                                         //System.out.println("Value what we were looking for: " + previous_value);
 263                                         //System.out.println("Valuenode: " + valuenode.getText());
 264
 265                                         //valuenode.setEditMode(true);
 266                                         valuenode.activateEdit(0, null, ctx);
 267                                         valuenode.setText(new_value);
 268                                         valuenode.fireTextEditingEnded();
 269
 270                                         //System.out.println("valuenode modified: " + valuenode);
 271                                         return "Modified module " + module + " with value " + new_value;
 272                                 }
 273                         }
 274                         return "Not found module : " + module;
 275                 }
 276         }
 277         return "No nodes in scenegraph!";
 278     }
 279
 280     public static String sceneGraphTest (ICanvasContext ctx, String module, String value) {
 281
 282         boolean module_founded = false;
 283         boolean value_founded = false;
 284
 285         Set<G2DSceneGraph> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), G2DSceneGraph.class);
 286         System.out.println("Total amount of nodes: " + g2.size() + 1);
 287
 288         Set<TextGridNode> grid = NodeUtil.collectNodes(ctx.getSceneGraph(), TextGridNode.class);
 289         Integer textGridNodeAmount = grid.size();
 290         System.out.println("Amount of TextGridNodes " + textGridNodeAmount);
 291
 292         Set<TextNode> texts = NodeUtil.collectNodes(ctx.getSceneGraph(), TextNode.class);
 293         Integer textNodeAmount = grid.size();
 294         System.out.println("Amount of TextNodes " + textNodeAmount);
 295
 296         for (TextNode node : texts) {
 297             if (module.equals(node.getText())) {
 298                 module_founded = true;
 299                 System.out.println("Correct module " + module + " founded.");
 300             }
 301             if (value.equals(node.getText())) {
 302                 value_founded = true;
 303                 System.out.println("Correct value " + value + " founded.");
 304             }
 305         }
 306
 307         if (value_founded == true && module_founded == true) {
 308                 return "Found both correct module " + module + " and value " + value;
 309         }
 310         if (value_founded == false && module_founded == true) {
 311                 return "Found only correct module " + module + " but not value " + value;
 312         }
 313         if (value_founded == true && module_founded == false) {
 314                 return "Found only correct value " + value + " but not module " + module;
 315         }
 316         else {
 317                 return "Didn't found either module " + module + " or value " + value;
 318         }
 319     }
 320
 321     public static boolean copyPaste (final ICanvasContext source_ctx, final ICanvasContext target_ctx, List<Resource> modules) throws DatabaseException {
 322
 323         IDiagram idiagram = source_ctx.getDefaultHintContext().getHint(DiagramHints.KEY_DIAGRAM);
 324
 325                 DataElementMap dem = idiagram.getDiagramClass().getAtMostOneItemOfClass(DataElementMap.class);
 326                 if (dem != null) {
 327                         final Collection<IElement> newSelection = new ArrayList<IElement>();
 328                         for (Resource module : modules) {
 329                                 IElement element = dem.getElement(idiagram, module);
 330                                 if (element != null) {
 331                                         newSelection.add(element);
 332                                 } else {
 333                                         throw new DatabaseException("Could not find IElement for " + element);
 334                                 }
 335                         }
 336
 337                         ThreadUtils.syncExec(source_ctx.getThreadAccess(), new Runnable() {
 338                     @Override
 339                     public void run() {
 340                         if (source_ctx.isDisposed())
 341                             return;
 342                         Selection selection = source_ctx.getAtMostOneItemOfClass(Selection.class);
 343                         if (selection != null) {
 344                             // This prevents workbench selection from being left over.
 345                             // Also prevents scene graph crap from being left on the screen.
 346                             selection.setSelection(0, newSelection);
 347                         }
 348                                 CanvasUtils.sendCommand(source_ctx, Commands.COPY);
 349                                 CanvasUtils.sendCommand(target_ctx, Commands.PASTE);
 350                     }
 351                 });
 352
 353                 //}
 354
 355                 while(source_ctx.getEventQueue().size() > 0) {
 356                         try {
 357                                 Thread.sleep(10);
 358                         } catch (InterruptedException e) {
 359                                 throw new DatabaseException(e);
 360                         }
 361                 }
 362
 363                 ThreadUtils.syncExec(source_ctx.getThreadAccess(), new Runnable() {
 364             @Override
 365             public void run() {
 366             }
 367         });
 368
 369                 }
 370                 return true;
 371     }
 372
 373         static class Generator extends SVGGraphics2D {
 374
 375                 int elemLevel = 0;
 376                 String newElementId = null;
 377                 ArrayList<Element> elements = new ArrayList<Element>();
 378
 379                 public static final String svgNS = "http://www.w3.org/2000/svg";
 380
 381                 public Generator(SVGGeneratorContext ctx, boolean joku) {
 382                         super(ctx, joku);
 383                 }
 384
 385                 public Generator(Document document) {
 386                         super(document);
 387                 }
 388
 389                 @Override
 390                 public Element getRoot() {
 391                         Element root = super.getRoot();
 392                         for(Element e : elements) {
 393                                 root.appendChild(e);
 394                         }
 395                         return root;
 396                 }
 397
 398                 @Override
 399                 public void setRenderingHint(Key arg0, Object arg1) {
 400                         if(G2DRenderingHints.KEY_BEGIN_ELEMENT == arg0) {
 401                                 elemLevel++;
 402                         }
 403                         if(G2DRenderingHints.KEY_ELEMENT_ID == arg0) {
 404                                 if(arg1 != null)
 405                                         newElementId = arg1.toString();
 406                                 else
 407                                         newElementId = UUID.randomUUID().toString();
 408                         }
 409                         if(G2DRenderingHints.KEY_END_ELEMENT == arg0) {
 410                                 elemLevel--;
 411                                 if(elemLevel == 0) {
 412                                         Element group = getDOMFactory().createElement(SVG_G_TAG);
 413                                         //Element group = getDOMFactory().createElementNS(SVG_NAMESPACE_URI, SVG_G_TAG);
 414                                         group.setAttributeNS(null, "id", newElementId);
 415                                         group.setAttributeNS(null, "class", arg1.toString());
 416                                         getRoot(group);
 417                                         elements.add(group);
 418                                 }
 419                         }
 420                         super.setRenderingHint(arg0, arg1);
 421                 }
 422
 423         }
 424
 425         public static Element renderSVGNode(SVGGraphics2D svgGenerator, IG2DNode node) {
 426
 427                 try {
 428
 429                         svgGenerator.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
 430                         svgGenerator.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
 431                         svgGenerator.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
 432
 433                         node.render(svgGenerator);
 434
 435                 } catch (Throwable t) {
 436                         LOGGER.error("Problems rendering scene graph to SVG", t);
 437                 }
 438
 439                 return svgGenerator.getRoot();
 440         }
 441
 442         public static String printSVGDocument(Element doce) {
 443
 444                 StringBuilder result = new StringBuilder();
 445
 446                 NodeList nl =  doce.getChildNodes();
 447
 448                 for(int i=0;i<nl.getLength();i++) {
 449
 450                         ByteArrayOutputStream os = new ByteArrayOutputStream();
 451
 452                         try {
 453
 454                                 TransformerFactory tf = TransformerFactory.newInstance();
 455                                 Transformer transformer = tf.newTransformer();
 456                                 transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
 457                                 transformer.setOutputProperty(OutputKeys.STANDALONE, "no");
 458                                 transformer.setOutputProperty(OutputKeys.METHOD, "xml");
 459                                 transformer.setOutputProperty(OutputKeys.INDENT, "yes");
 460                                 transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
 461                                 transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
 462
 463                                 transformer.transform(new DOMSource(nl.item(i)),
 464                                                 new StreamResult(new OutputStreamWriter(os, "UTF-8")));
 465
 466                                 os.flush();
 467                                 os.close();
 468
 469                         } catch (Throwable t) {
 470                                 LOGGER.error("Problems formatting SVGDocument to text.", t);
 471                         }
 472
 473                         result.append(new String(os.toByteArray()));
 474
 475                 }
 476
 477                 return result.toString();
 478
 479         }
 480
 481         public static String renderSVG3(ICanvasContext ctx) {
 482                 return renderSVG3(ctx, -1, -1);
 483         }
 484
 485         public static String renderSVG3(ICanvasContext ctx, double width, double height) {
 486         return renderSVG0(width, height, ctx, p0 -> p0.stream().collect(Collectors.toMap(p1 -> p1, p2 -> p2)));
 487         }
 488
 489     /**
 490      * @param graph
 491      * @param component
 492      * @throws DatabaseException
 493      */
 494     private static Object[] createURIBasedL0Identifier(ReadGraph graph, Resource component) throws DatabaseException {
 495         String uri = graph.getPossibleURI(component);
 496         int hashCode = uri.hashCode();
 497         Random random = new Random(hashCode);
 498         long l1 = random.nextLong();
 499         long l2 = random.nextLong();
 500         return new Object[] { l1, l2 };
 501     }
 502
 503     /**
 504      * Default no-op mapper
 505      */
 506     private static final Function1<Set<?>, Map<?, ?>> mapper = p0 -> p0.stream().collect(Collectors.toMap(p1 -> p1, p2 -> p2));
 507
 508     public static String renderSVG(ICanvasContext ctx, double width, double height) {
 509         return renderSVG0(width, height, ctx, mapper);
 510     }
 511
 512     public static String renderSVG(ICanvasContext ctx) {
 513         return renderSVG(ctx, -1, -1);
 514     }
 515
 516     public static String renderSVGMapIdentifiers(ICanvasContext ctx) {
 517                 return renderSVGMapIdentifiers(ctx, -1, -1);
 518     }
 519
 520     /**
 521      * Renders ICanvasContext into SVG by mapping the SVG id's into URI based
 522      * GUID's
 523      *
 524      * @param ctx
 525      * @return
 526      */
 527     public static String renderSVGMapIdentifiers(ICanvasContext ctx, double width, double height) {
 528         return renderSVG0(width, height, ctx, new Function1<Set<?>, Map<?, ?>>() {
 529
 530             @Override
 531             public Map<?, ?> apply(Set<?> p0) {
 532                 try {
 533                     return Simantics.getSession().syncRequest(new UnaryRead<Set<?>, Map<?, ?>>(p0) {
 534
 535                         @Override
 536                         public Map<?, ?> perform(ReadGraph graph) throws DatabaseException {
 537                             ModelingResources MOD = ModelingResources.getInstance(graph);
 538                             DiagramResource DIA = DiagramResource.getInstance(graph);
 539                             Layer0 L0 = Layer0.getInstance(graph);
 540                             return parameter.stream().collect(Collectors.toMap(p -> p, p -> {
 541                                 try {
 542                                     if (p instanceof Resource) {
 543                                         Resource element = (Resource) p;
 544                                         if (graph.isInstanceOf(element, DIA.Element)) {
 545                                             Resource component = graph.getPossibleObject(element, MOD.ElementToComponent);
 546                                             if (component != null) {
 547                                                 GUID identifier = graph.getPossibleRelatedValue(component, L0.identifier, GUID.BINDING);
 548                                                 if (identifier != null) {
 549                                                     return Arrays.toString(createURIBasedL0Identifier(graph, component));
 550                                                 } else {
 551                                                     LOGGER.error("Component {} does not have GUID identifier!", component);
 552                                                 }
 553                                             } else if (graph.isInstanceOf(element, DIA.Connection) || graph.isInstanceOf(element, DIA.Terminal)) {
 554                                                 // Ok, lets create a hashcode for connections and terminals as they do not have identifiers
 555                                                 return graph.getURI(element).hashCode();
 556                                             } else {
 557                                                 // Ok, lets create a hashcode or either return empty string in cases where no ID is required
 558                                                 if (graph.hasStatement(element, L0.HasName))
 559                                                     return graph.getURI(element).hashCode();
 560                                                 return "";
 561                                             }
 562                                         }
 563                                     } else {
 564                                         LOGGER.error("Parameter p {} is not resource but it is {}", p, p.getClass());
 565                                     }
 566                                     return p;
 567                                 } catch (DatabaseException e) {
 568                                     throw new RuntimeDatabaseException(e);
 569                                 }
 570                             }));
 571                         }
 572                     });
 573                 } catch (DatabaseException e) {
 574                     LOGGER.error("Could not apply mappings", e);
 575                     throw new RuntimeDatabaseException(e);
 576                 }
 577             }
 578         });
 579         }
 580
 581     static class RenderSVGContext {
 582
 583         Map<String,StringBuilder> documents = new HashMap<>();
 584
 585         public void append(String[] keys, String svgText) {
 586                 for(String key : keys) append(key, svgText);
 587         }
 588
 589         public void append(String key, String svgText) {
 590                 StringBuilder builder = documents.get(key);
 591                 if(builder == null) {
 592                         builder = new StringBuilder();
 593                         documents.put(key, builder);
 594                 }
 595                 builder.append(svgText);
 596         }
 597
 598         public void append(RenderSVGContext other) {
 599                 for(String key : other.documents.keySet()) {
 600                         append(key, other.get(key));
 601                 }
 602         }
 603
 604         public String get(String key) {
 605                 StringBuilder builder = documents.get(key);
 606                 if(builder == null) return "";
 607                 else return builder.toString();
 608         }
 609
 610     }
 611
 612         private static String renderSVG0(double width, double height, ICanvasContext ctx, Function1<Set<?>, Map<?, ?>> mappingFunction) {
 613
 614                 // Get a DOMImplementation.
 615                 DOMImplementation domImpl = GenericDOMImplementation.getDOMImplementation();
 616
 617                 // Create an instance of org.w3c.dom.Document.
 618                 String svgNS = "http://www.w3.org/2000/svg";
 619                 Document document = domImpl.createDocument(svgNS, "svg", null);
 620
 621                 // Create an instance of the SVG Generator.
 622                 SVGGraphics2D svgGenerator = new Generator(document);
 623
 624                 RenderSVGContext result = new RenderSVGContext();
 625
 626                 try {
 627
 628             Selection selection = ctx.getAtMostOneItemOfClass(Selection.class);
 629             if (selection != null) {
 630                 // This prevents workbench selection from being left over.
 631                 // Also prevents scene graph crap from being left on the screen.
 632                 IDiagram d = ctx.getDefaultHintContext().getHint(DiagramHints.KEY_DIAGRAM);
 633                 selection.setSelection(0, d.getElements());
 634             }
 635
 636                         G2DSceneGraph sg = ctx.getSceneGraph();
 637                         sg.performCleanup();
 638                         G2DParentNode root = (G2DParentNode) sg.getRootNode();
 639
 640                         // rtree is the actual content of the diagram
 641                         RTreeNode rtree = NodeUtil.getNearestChildByClass(root, RTreeNode.class);
 642                         Rectangle2D rtreeBounds = NodeUtil.getLocalBounds(rtree);
 643
 644                         // get the bounds of the content
 645                         Rectangle2D content = rtreeBounds;
 646
 647                         // To account for dynamic padding of selection rectangles (5 units + stroke width)
 648                         int offset = 6;
 649
 650                         double scale = width < 0 || height < 0 ? 1.0 : Math.min((width - 2*offset) / content.getWidth(), (height - 2*offset) / content.getHeight());
 651
 652                         svgGenerator.translate(offset, offset);
 653                         svgGenerator.scale(scale, scale);
 654                         // translate svgGenerator to the x and y coordinates of current content
 655                         svgGenerator.translate(-content.getX(), -content.getY());
 656
 657                         svgGenerator.setSVGCanvasSize(new Dimension((int)Math.ceil(scale * content.getWidth()) + 2*offset, (int)Math.ceil(scale * content.getHeight()) + 2*offset));
 658                         //svgGenerator.setClip(content);
 659
 660                         result.append(MAIN_SECTION, "<g class=\"symbols\">");
 661                         result.append(SELECTION_SECTION, "<g class=\"selections\">");
 662                         result.append(SELECTION_MASK_SECTION, "<g class=\"selectionMasks\">");
 663
 664                         KeyVisitor keyVisitor = new KeyVisitor();
 665                         sg.accept(keyVisitor);
 666
 667                         Set<Object> keys = keyVisitor.getKeys();
 668
 669                         Map<?, ?> mappings = mappingFunction.apply(keys);
 670
 671                         IG2DNodeVisitor visitor = new PrintingVisitor(svgGenerator, result, mappings);
 672
 673                         sg.accept(visitor);
 674
 675                 } catch (Throwable t) {
 676                         LOGGER.error("Problems rendering canvas context to SVG", t);
 677                 }
 678
 679
 680                 result.append(ALL_SECTIONS, "</g>");
 681
 682                 StringBuilder res = new StringBuilder();
 683                 res.append("<svg width=\"100%\" height=\"100%\" stroke=\"black\">");
 684                 res.append(result.get(MAIN_SECTION));
 685                 res.append(result.get(SELECTION_SECTION));
 686                 res.append(result.get(SELECTION_MASK_SECTION));
 687                 res.append("</svg>");
 688
 689 //              System.err.println(" == FINAL RESULT == ");
 690 //              System.err.println(res.toString());
 691
 692                 return res.toString();
 693
 694         }
 695
 696
 697
 698         private static class KeyVisitor implements IG2DNodeVisitor {
 699
 700         private Set<Object> keys = new HashSet<>();
 701
 702         @Override
 703         public void enter(IG2DNode node) {
 704             if (node instanceof SingleElementNode) {
 705                 Object key = ((SingleElementNode) node).getKey();
 706                 if (key != null) {
 707                     keys.add(key);
 708                 }
 709             }
 710         }
 711
 712         @Override
 713         public void leave(IG2DNode node) {
 714             // Nothing to do
 715         }
 716
 717         public Set<Object> getKeys() {
 718             return keys;
 719         }
 720         }
 721
 722         private static class PrintingVisitor implements IG2DNodeVisitor {
 723
 724         int indent = 0;
 725
 726         HashMap<SingleElementNode,RenderSVGContext> senBuilders = new HashMap<>();
 727
 728         private RenderSVGContext result;
 729         private SVGGraphics2D svgGenerator;
 730
 731         private Map<?, ?> mappings;
 732
 733         public PrintingVisitor(SVGGraphics2D svgGenerator, RenderSVGContext result, Map<?, ?> mappings) {
 734             this.result = result;
 735             this.mappings = mappings;
 736             this.svgGenerator = svgGenerator;
 737         }
 738
 739         private String getKey(SingleElementNode node) {
 740             String key;
 741                 if(node.getKey() != null) {
 742                 if (mappings.containsKey(node.getKey()))
 743                     key = mappings.get(node.getKey()).toString();
 744                 else
 745                     key = node.getKey().toString();
 746                 } else {
 747                         key = Long.toString(node.getId());
 748                 }
 749             return key;
 750         }
 751
 752         @Override
 753         public void enter(IG2DNode node) {
 754
 755                 RenderSVGContext parentBuilder = getParentBuilder(node);
 756
 757             indent++;
 758             if(node instanceof ConnectionNode) {
 759
 760                 for(RouteGraphNode n : NodeUtil.collectNodes(node, RouteGraphNode.class)) {
 761                     n.setIgnoreSelection(true);
 762                 }
 763
 764                 String key = getKey((ConnectionNode) node);
 765                 parentBuilder.append(MAIN_SECTION, "\n<g class=\"connection\" id=\"" + key + "\">");
 766                 parentBuilder.append(SELECTION_SECTION, "\n<g style=\"visibility:hidden\" class=\"selection\" id=\"" + key + "\">");
 767                 parentBuilder.append(SELECTION_MASK_SECTION, "\n<g class=\"selectionMask\" opacity=\"0.001\" id=\"" + key + "\">");
 768
 769                 Element doc = renderSVGNode(svgGenerator, (IG2DNode)node);
 770                 String svg = printSVGDocument(doc);
 771                 parentBuilder.append(MAIN_SECTION, svg);
 772
 773                 for(RouteGraphNode n : NodeUtil.collectNodes(node, RouteGraphNode.class)) {
 774                     n.setIgnoreSelection(false);
 775                 }
 776
 777                 doc = renderSVGNode(svgGenerator, (IG2DNode)node);
 778                 svg = printSVGDocument(doc);
 779                 parentBuilder.append(SELECTION_SECTION, svg);
 780
 781                 BasicStroke bs = new BasicStroke(10f);
 782
 783                 for(RouteGraphNode n : NodeUtil.collectNodes(node, RouteGraphNode.class)) {
 784                     n.setDynamicStroke(bs);
 785                 }
 786
 787                 doc = renderSVGNode(svgGenerator, (IG2DNode)node);
 788                 svg = printSVGDocument(doc);
 789                 parentBuilder.append(SELECTION_MASK_SECTION, svg);
 790
 791                 parentBuilder.append(SELECTION_MASK_SECTION, "\n</g>");
 792                 parentBuilder.append(SELECTION_SECTION, "\n</g>");
 793                 parentBuilder.append(MAIN_SECTION, "\n</g>");
 794
 795             } else if (node instanceof SelectionNode) {
 796
 797                 SelectionNode n = (SelectionNode)node;
 798                 SingleElementNode parentSEN = (SingleElementNode)NodeUtil.getNearestParentOfType(node, SingleElementNode.class);
 799                 if(parentSEN != null) {
 800
 801                         RenderSVGContext parentBuilder2 = getParentBuilder(parentSEN);
 802
 803                     String key = getKey(parentSEN);
 804                     n.setIgnore(false);
 805                     Element doc = renderSVGNode(svgGenerator, (IG2DNode)node);
 806                     n.setIgnore(true);
 807                     String svg = printSVGDocument(doc);
 808                     parentBuilder2.append(SELECTION_SECTION, "\n<g style=\"visibility:hidden\" class=\"selection\" id=\"" + key + "\">");
 809                     parentBuilder2.append(SELECTION_SECTION, svg);
 810                     parentBuilder2.append(SELECTION_SECTION, "\n</g>");
 811                     AffineTransform transform = svgGenerator.getTransform();
 812                     double[] matrix = new double[6];
 813                     transform.getMatrix(matrix);
 814                     String matrixString = String.format("matrix(%f,%f,%f,%f,%f,%f)", matrix[0], matrix[1], matrix[2], matrix[3], matrix[4], matrix[5]);
 815                     parentBuilder2.append(SELECTION_MASK_SECTION, "\n<g class=\"selectionMask\" id=\"" + key + "\" transform=\"" + matrixString + "\">");
 816                     Rectangle2D rect = n.getRect();
 817                     // NaN
 818                     if(rect.getHeight() == rect.getHeight() && rect.getWidth() == rect.getWidth()) {
 819                             parentBuilder2.append(SELECTION_MASK_SECTION,"<rect style=\"fill:#fff\" opacity=\"0.001\"");
 820                             parentBuilder2.append(SELECTION_MASK_SECTION," x=\"" + rect.getX() + "\" y=\"" + rect.getY() + "\"");
 821                             parentBuilder2.append(SELECTION_MASK_SECTION," width=\"" + rect.getWidth() + "\" height=\"" + rect.getHeight() + "\"");
 822                             parentBuilder2.append(SELECTION_MASK_SECTION,"></rect>");
 823                     }
 824                     parentBuilder2.append(SELECTION_MASK_SECTION,"\n</g>");
 825
 826                 }
 827             } else if (node instanceof SVGNode) {
 828                 SVGNode svg = (SVGNode)node;
 829                 parentBuilder.append(MAIN_SECTION, svg.getSVGText());
 830             } else if (node instanceof G2DParentNode) {
 831                 AffineTransform at = node.getTransform();
 832                 if(node instanceof SingleElementNode) {
 833                     SingleElementNode sen = (SingleElementNode)node;
 834                     String key = getKey(sen);
 835                     String typeClass = sen.getTypeClass();
 836                     String clazz = "definedElement";
 837                     if(typeClass != null && !typeClass.isEmpty())
 838                         clazz = clazz + " " + typeClass;
 839
 840                     parentBuilder.append(MAIN_SECTION, "\n<g class=\""+clazz+"\" id=\"" + key + "\">");
 841                     senBuilders.put(sen, new RenderSVGContext());
 842                 }
 843                 if(!at.isIdentity()) {
 844                     if(at.getScaleX() == 1.0 && at.getScaleY() == 1.0 && at.getShearX() == 0.0 && at.getShearY() == 0.0) {
 845                         String m = "translate(" + at.getTranslateX() + " " + at.getTranslateY() + ")";
 846                         parentBuilder.append(ALL_SECTIONS, "\n<g transform=\"" + m + "\">");
 847                     } else {
 848                         double[] ds = new double[6];
 849                         at.getMatrix(ds);
 850                         String m = "matrix(" + ds[0] + " " + ds[1] + " " + ds[2] + " " + ds[3] + " " + ds[4] + " " + ds[5] + ")";
 851                         parentBuilder.append(ALL_SECTIONS, "\n<g transform=\"" + m + "\">");
 852                     }
 853                 }
 854             }
 855
 856             //enters.put(node, b.length());
 857
 858         }
 859
 860         private RenderSVGContext getParentBuilder(IG2DNode node) {
 861
 862             INode parentSEN = NodeUtil.getNearestParentOfType(node, SingleElementNode.class);
 863             if(parentSEN instanceof G2DSceneGraph) return result;
 864
 865             RenderSVGContext parentBuilder = senBuilders.get(parentSEN);
 866             if(parentBuilder == null) return result;
 867
 868             return parentBuilder;
 869
 870         }
 871
 872         @Override
 873         public void leave(IG2DNode node) {
 874
 875             if(node instanceof ConnectionNode || node instanceof SVGNode) {
 876                 // We are done
 877             } else if (node instanceof G2DParentNode) {
 878
 879                 RenderSVGContext parentBuilder = getParentBuilder(node);
 880
 881                 if(node instanceof SingleElementNode) {
 882                         SingleElementNode sen = (SingleElementNode)node;
 883                         RenderSVGContext b = senBuilders.get(sen);
 884                         String content = b.get(MAIN_SECTION);
 885                         if(content.isEmpty()) {
 886                                 if(sen.getKey() != null) {
 887
 888                                         for(SelectionNode n : NodeUtil.collectNodes(node, SelectionNode.class)) {
 889                                                 n.setIgnore(true);
 890                                         }
 891
 892                                         Element doc = renderSVGNode(svgGenerator, (IG2DNode)node);
 893                                         String svg = printSVGDocument(doc);
 894                                         parentBuilder.append(MAIN_SECTION, svg);
 895                                 }
 896                         } else {
 897                                 parentBuilder.append(b);
 898                         }
 899                 }
 900
 901                 AffineTransform at = node.getTransform();
 902                 if(!at.isIdentity()) {
 903                     parentBuilder.append(ALL_SECTIONS, "</g>");
 904                 }
 905                 if(node instanceof SingleElementNode) {
 906                     SingleElementNode sen = (SingleElementNode)node;
 907                     //if(sen.getKey() != null) {
 908                         parentBuilder.append(MAIN_SECTION, "</g>");
 909                     //}
 910                 }
 911             }
 912             indent --;
 913         }
 914         }
 915 }