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(IG2DNode node) {
 426
 427                 // Get a DOMImplementation.
 428                 DOMImplementation domImpl = GenericDOMImplementation.getDOMImplementation();
 429
 430                 // Create an instance of org.w3c.dom.Document.
 431                 String svgNS = "http://www.w3.org/2000/svg";
 432                 Document document = domImpl.createDocument(svgNS, "svg", null);
 433
 434                 SVGGeneratorContext ctx = SVGGeneratorContext.createDefault(document);
 435                 ctx.setComment(null);
 436
 437                 // Create an instance of the SVG Generator.
 438                 SVGGraphics2D svgGenerator = new Generator(ctx, false);
 439
 440                 try {
 441
 442                         svgGenerator.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
 443                         svgGenerator.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
 444                         svgGenerator.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
 445
 446                         node.render(svgGenerator);
 447
 448                 } catch (Throwable t) {
 449                         LOGGER.error("Problems rendering scene graph to SVG", t);
 450                 }
 451
 452                 return svgGenerator.getRoot();
 453         }
 454
 455         public static String printSVGDocument(Element doce) {
 456
 457                 StringBuilder result = new StringBuilder();
 458
 459                 NodeList nl =  doce.getChildNodes();
 460
 461                 for(int i=0;i<nl.getLength();i++) {
 462
 463                         ByteArrayOutputStream os = new ByteArrayOutputStream();
 464
 465                         try {
 466
 467                                 TransformerFactory tf = TransformerFactory.newInstance();
 468                                 Transformer transformer = tf.newTransformer();
 469                                 transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
 470                                 transformer.setOutputProperty(OutputKeys.STANDALONE, "no");
 471                                 transformer.setOutputProperty(OutputKeys.METHOD, "xml");
 472                                 transformer.setOutputProperty(OutputKeys.INDENT, "yes");
 473                                 transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
 474                                 transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
 475
 476                                 transformer.transform(new DOMSource(nl.item(i)),
 477                                                 new StreamResult(new OutputStreamWriter(os, "UTF-8")));
 478
 479                                 os.flush();
 480                                 os.close();
 481
 482                         } catch (Throwable t) {
 483                                 LOGGER.error("Problems formatting SVGDocument to text.", t);
 484                         }
 485
 486                         result.append(new String(os.toByteArray()));
 487
 488                 }
 489
 490                 return result.toString();
 491
 492         }
 493
 494         public static String renderSVG3(ICanvasContext ctx) {
 495         return renderSVG0(ctx, p0 -> p0.stream().collect(Collectors.toMap(p1 -> p1, p2 -> p2)));
 496         }
 497
 498     /**
 499      * @param graph
 500      * @param component
 501      * @throws DatabaseException
 502      */
 503     private static Object[] createURIBasedL0Identifier(ReadGraph graph, Resource component) throws DatabaseException {
 504         String uri = graph.getPossibleURI(component);
 505         int hashCode = uri.hashCode();
 506         Random random = new Random(hashCode);
 507         long l1 = random.nextLong();
 508         long l2 = random.nextLong();
 509         return new Object[] { l1, l2 };
 510     }
 511
 512     /**
 513      * Default no-op mapper
 514      */
 515     private static final Function1<Set<?>, Map<?, ?>> mapper = p0 -> p0.stream().collect(Collectors.toMap(p1 -> p1, p2 -> p2));
 516
 517     public static String renderSVG(ICanvasContext ctx) {
 518         return renderSVG0(ctx, mapper);
 519     }
 520
 521     /**
 522      * Renders ICanvasContext into SVG by mapping the SVG id's into URI based
 523      * GUID's
 524      *
 525      * @param ctx
 526      * @return
 527      */
 528     public static String renderSVGMapIdentifiers(ICanvasContext ctx) {
 529         return renderSVG0(ctx, new Function1<Set<?>, Map<?, ?>>() {
 530
 531             @Override
 532             public Map<?, ?> apply(Set<?> p0) {
 533                 try {
 534                     return Simantics.getSession().syncRequest(new UnaryRead<Set<?>, Map<?, ?>>(p0) {
 535
 536                         @Override
 537                         public Map<?, ?> perform(ReadGraph graph) throws DatabaseException {
 538                             ModelingResources MOD = ModelingResources.getInstance(graph);
 539                             DiagramResource DIA = DiagramResource.getInstance(graph);
 540                             Layer0 L0 = Layer0.getInstance(graph);
 541                             return parameter.stream().collect(Collectors.toMap(p -> p, p -> {
 542                                 try {
 543                                     if (p instanceof Resource) {
 544                                         Resource element = (Resource) p;
 545                                         if (graph.isInstanceOf(element, DIA.Element)) {
 546                                             Resource component = graph.getPossibleObject(element, MOD.ElementToComponent);
 547                                             if (component != null) {
 548                                                 GUID identifier = graph.getPossibleRelatedValue(component, L0.identifier, GUID.BINDING);
 549                                                 if (identifier != null) {
 550                                                     return Arrays.toString(createURIBasedL0Identifier(graph, component));
 551                                                 } else {
 552                                                     LOGGER.error("Component {} does not have GUID identifier!", component);
 553                                                 }
 554                                             } else if (graph.isInstanceOf(element, DIA.Connection) || graph.isInstanceOf(element, DIA.Terminal)) {
 555                                                 // Ok, lets create a hashcode for connections and terminals as they do not have identifiers
 556                                                 return graph.getURI(element).hashCode();
 557                                             } else {
 558                                                 // Ok, lets create a hashcode or either return empty string in cases where no ID is required
 559                                                 if (graph.hasStatement(element, L0.HasName))
 560                                                     return graph.getURI(element).hashCode();
 561                                                 return "";
 562                                             }
 563                                         }
 564                                     } else {
 565                                         LOGGER.error("Parameter p {} is not resource but it is {}", p, p.getClass());
 566                                     }
 567                                     return p;
 568                                 } catch (DatabaseException e) {
 569                                     throw new RuntimeDatabaseException(e);
 570                                 }
 571                             }));
 572                         }
 573                     });
 574                 } catch (DatabaseException e) {
 575                     LOGGER.error("Could not apply mappings", e);
 576                     throw new RuntimeDatabaseException(e);
 577                 }
 578             }
 579         });
 580         }
 581
 582     static class RenderSVGContext {
 583
 584         Map<String,StringBuilder> documents = new HashMap<>();
 585
 586         public void append(String[] keys, String svgText) {
 587                 for(String key : keys) append(key, svgText);
 588         }
 589
 590         public void append(String key, String svgText) {
 591                 StringBuilder builder = documents.get(key);
 592                 if(builder == null) {
 593                         builder = new StringBuilder();
 594                         documents.put(key, builder);
 595                 }
 596                 builder.append(svgText);
 597         }
 598
 599         public void append(RenderSVGContext other) {
 600                 for(String key : other.documents.keySet()) {
 601                         append(key, other.get(key));
 602                 }
 603         }
 604
 605         public String get(String key) {
 606                 StringBuilder builder = documents.get(key);
 607                 if(builder == null) return "";
 608                 else return builder.toString();
 609         }
 610
 611     }
 612
 613         private static String renderSVG0(ICanvasContext ctx, Function1<Set<?>, Map<?, ?>> mappingFunction) {
 614
 615                 // Get a DOMImplementation.
 616                 DOMImplementation domImpl = GenericDOMImplementation.getDOMImplementation();
 617
 618                 // Create an instance of org.w3c.dom.Document.
 619                 String svgNS = "http://www.w3.org/2000/svg";
 620                 Document document = domImpl.createDocument(svgNS, "svg", null);
 621
 622                 // Create an instance of the SVG Generator.
 623                 SVGGraphics2D svgGenerator = new Generator(document);
 624
 625                 RenderSVGContext result = new RenderSVGContext();
 626
 627                 try {
 628
 629             Selection selection = ctx.getAtMostOneItemOfClass(Selection.class);
 630             if (selection != null) {
 631                 // This prevents workbench selection from being left over.
 632                 // Also prevents scene graph crap from being left on the screen.
 633                 IDiagram d = ctx.getDefaultHintContext().getHint(DiagramHints.KEY_DIAGRAM);
 634                 selection.setSelection(0, d.getElements());
 635             }
 636
 637                         G2DSceneGraph sg = ctx.getSceneGraph();
 638                         sg.performCleanup();
 639                         G2DParentNode root = (G2DParentNode) sg.getRootNode();
 640
 641                         // rtree is the actual content of the diagram
 642                         RTreeNode rtree = NodeUtil.getNearestChildByClass(root, RTreeNode.class);
 643                         Rectangle2D rtreeBounds = NodeUtil.getLocalBounds(rtree);
 644
 645                         // nav is a node that has zooming functionalities
 646                         NavigationNode nav = NodeUtil.getNearestChildByClass(root, NavigationNode.class);
 647                         nav.setZoomEnabled(true);
 648
 649                         // fit view with the contents of rtreeBounds
 650                         nav.zoomTo(rtreeBounds);
 651
 652                         // get the bounds of the content
 653                         Rectangle2D content = NodeUtil.getLocalBounds(nav);
 654
 655                         svgGenerator.scale(3,3);
 656
 657                         // translate svgGenerator to the x and y coordinates of current content
 658                         svgGenerator.translate(-1 * content.getX(), (-1 * content.getY()));
 659
 660                         Rectangle2D destination = new Rectangle2D.Double(0,0,1000,1000);
 661                         double sx = destination.getWidth() / content.getWidth();
 662                         double sy = destination.getHeight() / content.getHeight();
 663                         double scale = sx < sy ? sx : sy;
 664
 665                         // Set svgCanvasSize to the given size parameters
 666                         svgGenerator.setSVGCanvasSize(new Dimension((int)(scale * content.getWidth()), (int)(scale * content.getHeight())));
 667                         svgGenerator.setClip(content);
 668
 669                         double trX = -1 * content.getX();
 670                         double trY = -1 * content.getY();
 671
 672                         // NaNs
 673                         if(!Double.isFinite(trX)) trX = 0;
 674                         if(!Double.isFinite(trY)) trY = 0;
 675
 676                         result.append(MAIN_SECTION, "<g class=\"symbols\">");
 677                         result.append(SELECTION_SECTION, "<g class=\"selections\">");
 678                         result.append(SELECTION_MASK_SECTION, "<g class=\"selectionMasks\">");
 679
 680                         result.append(ALL_SECTIONS, "<g transform=\"translate(");
 681                         result.append(ALL_SECTIONS, "" + trX);
 682                         result.append(ALL_SECTIONS, ", ");
 683                         result.append(ALL_SECTIONS, "" + trY);
 684                         result.append(ALL_SECTIONS, ")\">");
 685
 686
 687                         KeyVisitor keyVisitor = new KeyVisitor();
 688                         sg.accept(keyVisitor);
 689
 690                         Set<Object> keys = keyVisitor.getKeys();
 691
 692                         Map<?, ?> mappings = mappingFunction.apply(keys);
 693
 694                         IG2DNodeVisitor visitor = new PrintingVisitor(result, mappings);
 695
 696                         sg.accept(visitor);
 697
 698                 } catch (Throwable t) {
 699                         LOGGER.error("Problems rendering canvas context to SVG", t);
 700                 }
 701
 702
 703                 result.append(ALL_SECTIONS, "</g></g>");
 704
 705                 StringBuilder res = new StringBuilder();
 706                 res.append("<svg width=\"100%\" height=\"100%\" stroke=\"black\">");
 707                 res.append(result.get(MAIN_SECTION));
 708                 res.append(result.get(SELECTION_SECTION));
 709                 res.append(result.get(SELECTION_MASK_SECTION));
 710                 res.append("</svg>");
 711
 712 //              System.err.println(" == FINAL RESULT == ");
 713 //              System.err.println(res.toString());
 714
 715                 return res.toString();
 716
 717         }
 718
 719
 720
 721         private static class KeyVisitor implements IG2DNodeVisitor {
 722
 723         private Set<Object> keys = new HashSet<>();
 724
 725         @Override
 726         public void enter(IG2DNode node) {
 727             if (node instanceof SingleElementNode) {
 728                 Object key = ((SingleElementNode) node).getKey();
 729                 if (key != null) {
 730                     keys.add(key);
 731                 }
 732             }
 733         }
 734
 735         @Override
 736         public void leave(IG2DNode node) {
 737             // Nothing to do
 738         }
 739
 740         public Set<Object> getKeys() {
 741             return keys;
 742         }
 743         }
 744
 745         private static class PrintingVisitor implements IG2DNodeVisitor {
 746
 747         int indent = 0;
 748
 749         HashMap<SingleElementNode,RenderSVGContext> senBuilders = new HashMap<>();
 750
 751         private RenderSVGContext result;
 752
 753         private Map<?, ?> mappings;
 754
 755         public PrintingVisitor(RenderSVGContext result, Map<?, ?> mappings) {
 756             this.result = result;
 757             this.mappings = mappings;
 758         }
 759
 760         private String getKey(SingleElementNode node) {
 761             String key;
 762             if (mappings.containsKey(node.getKey()))
 763                 key = mappings.get(node.getKey()).toString();
 764             else
 765                 key = node.getKey().toString();
 766             return key;
 767         }
 768
 769         @Override
 770         public void enter(IG2DNode node) {
 771
 772                 RenderSVGContext parentBuilder = getParentBuilder(node);
 773
 774             indent++;
 775             if(node instanceof ConnectionNode) {
 776
 777                 for(RouteGraphNode n : NodeUtil.collectNodes(node, RouteGraphNode.class)) {
 778                     n.setIgnoreSelection(true);
 779                 }
 780
 781                 String key = getKey((ConnectionNode) node);
 782                 parentBuilder.append(MAIN_SECTION, "\n<g class=\"connection\" id=\"" + key + "\">");
 783                 parentBuilder.append(SELECTION_SECTION, "\n<g style=\"visibility:hidden\" class=\"selection\" id=\"" + key + "\">");
 784                 parentBuilder.append(SELECTION_MASK_SECTION, "\n<g class=\"selectionMask\" opacity=\"0.001\" id=\"" + key + "\">");
 785
 786                 Element doc = renderSVGNode((IG2DNode)node);
 787                 String svg = printSVGDocument(doc);
 788                 parentBuilder.append(MAIN_SECTION, svg);
 789
 790                 for(RouteGraphNode n : NodeUtil.collectNodes(node, RouteGraphNode.class)) {
 791                     n.setIgnoreSelection(false);
 792                 }
 793
 794                 doc = renderSVGNode((IG2DNode)node);
 795                 svg = printSVGDocument(doc);
 796                 parentBuilder.append(SELECTION_SECTION, svg);
 797
 798                 BasicStroke bs = new BasicStroke(10f);
 799
 800                 for(RouteGraphNode n : NodeUtil.collectNodes(node, RouteGraphNode.class)) {
 801                     n.setDynamicStroke(bs);
 802                 }
 803
 804                 doc = renderSVGNode((IG2DNode)node);
 805                 svg = printSVGDocument(doc);
 806                 parentBuilder.append(SELECTION_MASK_SECTION, svg);
 807
 808                 parentBuilder.append(SELECTION_MASK_SECTION, "\n</g>");
 809                 parentBuilder.append(SELECTION_SECTION, "\n</g>");
 810                 parentBuilder.append(MAIN_SECTION, "\n</g>");
 811
 812             } else if (node instanceof SelectionNode) {
 813
 814                 SelectionNode n = (SelectionNode)node;
 815                 SingleElementNode parentSEN = (SingleElementNode)NodeUtil.getNearestParentOfType(node, SingleElementNode.class);
 816                 if(parentSEN != null && parentSEN.getKey() != null) {
 817
 818                         RenderSVGContext parentBuilder2 = getParentBuilder(parentSEN);
 819
 820                     String key = getKey(parentSEN);
 821                     n.setIgnore(false);
 822                     Element doc = renderSVGNode((IG2DNode)node);
 823                     n.setIgnore(true);
 824                     String svg = printSVGDocument(doc);
 825                     parentBuilder2.append(SELECTION_SECTION, "\n<g style=\"visibility:hidden\" class=\"selection\" id=\"" + key + "\">");
 826                     parentBuilder2.append(SELECTION_SECTION, svg);
 827                     parentBuilder2.append(SELECTION_SECTION, "\n</g>");
 828                     parentBuilder2.append(SELECTION_MASK_SECTION, "\n<g class=\"selectionMask\" id=\"" + key + "\">");
 829                     Rectangle2D rect = n.getRect();
 830                     // NaN
 831                     if(rect.getHeight() == rect.getHeight() && rect.getWidth() == rect.getWidth()) {
 832                             parentBuilder2.append(SELECTION_MASK_SECTION,"<rect style=\"fill:#fff\" opacity=\"0.001\"");
 833                             parentBuilder2.append(SELECTION_MASK_SECTION," x=\"" + rect.getX() + "\" y=\"" + rect.getY() + "\"");
 834                             parentBuilder2.append(SELECTION_MASK_SECTION," width=\"" + rect.getWidth() + "\" height=\"" + rect.getHeight() + "\"");
 835                             parentBuilder2.append(SELECTION_MASK_SECTION,"></rect>");
 836                     }
 837                     parentBuilder2.append(SELECTION_MASK_SECTION,"\n</g>");
 838
 839                 }
 840             } else if (node instanceof SVGNode) {
 841                 SVGNode svg = (SVGNode)node;
 842                 parentBuilder.append(MAIN_SECTION, svg.getSVGText());
 843             } else if (node instanceof G2DParentNode) {
 844                 AffineTransform at = node.getTransform();
 845                 if(node instanceof SingleElementNode) {
 846                     SingleElementNode sen = (SingleElementNode)node;
 847                     if(sen.getKey() != null) {
 848                         String key = getKey(sen);
 849                         String typeClass = sen.getTypeClass();
 850                         String clazz = "definedElement";
 851                         if(typeClass != null && !typeClass.isEmpty())
 852                                 clazz = clazz + " " + typeClass;
 853
 854                         parentBuilder.append(MAIN_SECTION, "\n<g class=\""+clazz+"\" id=\"" + key + "\">");
 855                     }
 856                     senBuilders.put(sen, new RenderSVGContext());
 857                 }
 858                 if(!at.isIdentity()) {
 859                     if(at.getScaleX() == 1.0 && at.getScaleY() == 1.0 && at.getShearX() == 0.0 && at.getShearY() == 0.0) {
 860                         String m = "translate(" + at.getTranslateX() + " " + at.getTranslateY() + ")";
 861                         parentBuilder.append(ALL_SECTIONS, "\n<g transform=\"" + m + "\">");
 862                     } else {
 863                         double[] ds = new double[6];
 864                         at.getMatrix(ds);
 865                         String m = "matrix(" + ds[0] + " " + ds[1] + " " + ds[2] + " " + ds[3] + " " + ds[4] + " " + ds[5] + ")";
 866                         parentBuilder.append(ALL_SECTIONS, "\n<g transform=\"" + m + "\">");
 867                     }
 868                 }
 869             }
 870
 871             //enters.put(node, b.length());
 872
 873         }
 874
 875         private RenderSVGContext getParentBuilder(IG2DNode node) {
 876
 877             INode parentSEN = NodeUtil.getNearestParentOfType(node, SingleElementNode.class);
 878             if(parentSEN instanceof G2DSceneGraph) return result;
 879
 880             RenderSVGContext parentBuilder = senBuilders.get(parentSEN);
 881             if(parentBuilder == null) return result;
 882
 883             return parentBuilder;
 884
 885         }
 886
 887         @Override
 888         public void leave(IG2DNode node) {
 889
 890             if(node instanceof ConnectionNode || node instanceof SVGNode) {
 891                 // We are done
 892             } else if (node instanceof G2DParentNode) {
 893
 894                 RenderSVGContext parentBuilder = getParentBuilder(node);
 895
 896                 if(node instanceof SingleElementNode) {
 897                         SingleElementNode sen = (SingleElementNode)node;
 898                         RenderSVGContext b = senBuilders.get(sen);
 899                         String content = b.get(MAIN_SECTION);
 900                         if(content.isEmpty()) {
 901                                 if(sen.getKey() != null) {
 902
 903                                         for(SelectionNode n : NodeUtil.collectNodes(node, SelectionNode.class)) {
 904                                                 n.setIgnore(true);
 905                                         }
 906
 907                                         Element doc = renderSVGNode((IG2DNode)node);
 908                                         String svg = printSVGDocument(doc);
 909                                         parentBuilder.append(MAIN_SECTION, svg);
 910                                 }
 911                         } else {
 912                                 parentBuilder.append(b);
 913                         }
 914                 }
 915
 916                 AffineTransform at = node.getTransform();
 917                 if(!at.isIdentity()) {
 918                     parentBuilder.append(ALL_SECTIONS, "</g>");
 919                 }
 920                 if(node instanceof SingleElementNode) {
 921                     SingleElementNode sen = (SingleElementNode)node;
 922                     if(sen.getKey() != null) {
 923                         parentBuilder.append(MAIN_SECTION, "</g>");
 924                     }
 925                 }
 926             }
 927             indent --;
 928         }
 929         }
 930 }