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.Color;
   5 import java.awt.Dimension;
   6 import java.awt.RenderingHints;
   7 import java.awt.RenderingHints.Key;
   8 import java.awt.geom.AffineTransform;
   9 import java.awt.geom.Rectangle2D;
  10 import java.io.ByteArrayOutputStream;
  11 import java.io.OutputStreamWriter;
  12 import java.util.ArrayList;
  13 import java.util.Arrays;
  14 import java.util.Collection;
  15 import java.util.HashMap;
  16 import java.util.HashSet;
  17 import java.util.List;
  18 import java.util.Map;
  19 import java.util.Random;
  20 import java.util.Set;
  21 import java.util.UUID;
  22 import java.util.function.Function;
  23 import java.util.stream.Collectors;
  24
  25 import javax.xml.transform.OutputKeys;
  26 import javax.xml.transform.Transformer;
  27 import javax.xml.transform.TransformerFactory;
  28 import javax.xml.transform.dom.DOMSource;
  29 import javax.xml.transform.stream.StreamResult;
  30
  31 import org.apache.batik.dom.GenericDOMImplementation;
  32 import org.apache.batik.svggen.SVGGeneratorContext;
  33 import org.apache.batik.svggen.SVGGraphics2D;
  34 import org.simantics.Simantics;
  35 import org.simantics.datatypes.literal.GUID;
  36 import org.simantics.db.ReadGraph;
  37 import org.simantics.db.Resource;
  38 import org.simantics.db.common.request.IndexRoot;
  39 import org.simantics.db.common.request.ResourceRead;
  40 import org.simantics.db.common.request.UnaryRead;
  41 import org.simantics.db.exception.DatabaseException;
  42 import org.simantics.db.exception.RuntimeDatabaseException;
  43 import org.simantics.db.layer0.variable.Variables;
  44 import org.simantics.diagram.elements.DecorationSVGNode;
  45 import org.simantics.diagram.elements.DiagramNodeUtil;
  46 import org.simantics.diagram.elements.TextGridNode;
  47 import org.simantics.diagram.elements.TextNode;
  48 import org.simantics.diagram.stubs.DiagramResource;
  49 import org.simantics.g2d.canvas.Hints;
  50 import org.simantics.g2d.canvas.ICanvasContext;
  51 import org.simantics.g2d.diagram.DiagramHints;
  52 import org.simantics.g2d.diagram.IDiagram;
  53 import org.simantics.g2d.diagram.handler.DataElementMap;
  54 import org.simantics.g2d.diagram.participant.Selection;
  55 import org.simantics.g2d.element.IElement;
  56 import org.simantics.g2d.scenegraph.ICanvasSceneGraphProvider;
  57 import org.simantics.g2d.utils.CanvasUtils;
  58 import org.simantics.layer0.Layer0;
  59 import org.simantics.scenegraph.INode;
  60 import org.simantics.scenegraph.ParentNode;
  61 import org.simantics.scenegraph.g2d.G2DParentNode;
  62 import org.simantics.scenegraph.g2d.G2DRenderingHints;
  63 import org.simantics.scenegraph.g2d.G2DSceneGraph;
  64 import org.simantics.scenegraph.g2d.IG2DNode;
  65 import org.simantics.scenegraph.g2d.IG2DNodeVisitor;
  66 import org.simantics.scenegraph.g2d.events.command.Commands;
  67 import org.simantics.scenegraph.g2d.nodes.BackgroundNode;
  68 import org.simantics.scenegraph.g2d.nodes.BoundsNode;
  69 import org.simantics.scenegraph.g2d.nodes.ConnectionNode;
  70 import org.simantics.scenegraph.g2d.nodes.DataNode;
  71 import org.simantics.scenegraph.g2d.nodes.NavigationNode;
  72 import org.simantics.scenegraph.g2d.nodes.SVGNode;
  73 import org.simantics.scenegraph.g2d.nodes.SelectionNode;
  74 import org.simantics.scenegraph.g2d.nodes.SingleElementNode;
  75 import org.simantics.scenegraph.g2d.nodes.connection.RouteGraphNode;
  76 import org.simantics.scenegraph.g2d.nodes.spatial.RTreeNode;
  77 import org.simantics.scenegraph.utils.NodeUtil;
  78 import org.simantics.scl.runtime.function.Function1;
  79 import org.simantics.scl.runtime.tuple.Tuple2;
  80 import org.simantics.trend.impl.ItemNode;
  81 import org.simantics.utils.threads.ThreadUtils;
  82 import org.slf4j.Logger;
  83 import org.slf4j.LoggerFactory;
  84 import org.w3c.dom.DOMImplementation;
  85 import org.w3c.dom.Document;
  86 import org.w3c.dom.Element;
  87 import org.w3c.dom.NodeList;
  88
  89 public class SCLScenegraph {
  90
  91         private static final Logger LOGGER = LoggerFactory.getLogger(SCLScenegraph.class);
  92
  93         private static final String MAIN_SECTION = "main";
  94         private static final String SELECTION_SECTION = "selection";
  95         private static final String SELECTION_MASK_SECTION = "selectionMask";
  96
  97         private static final String[] ALL_SECTIONS = { MAIN_SECTION, SELECTION_SECTION, SELECTION_MASK_SECTION };
  98
  99         @Deprecated
 100         public static ICanvasSceneGraphProvider getICanvasSceneGraphProvider(Resource model, Resource diagram, String diagramRVI) throws DatabaseException, InterruptedException {
 101                 ICanvasSceneGraphProvider provider = DiagramNodeUtil.loadSceneGraphProvider(model, diagram, diagramRVI);
 102                 return provider;
 103         }
 104
 105         @Deprecated
 106         public static void disposeSceneGraphProvider(ICanvasSceneGraphProvider provider) {
 107                 provider.dispose();
 108         }
 109
 110     public static <T> T doWithICanvasSceneGraphProvider(Resource diagram, Function1<ICanvasSceneGraphProvider, T> func) throws DatabaseException {
 111         return doWithICanvasSceneGraphProvider(diagram, (Function<ICanvasSceneGraphProvider, T>) provider -> func.apply(provider));
 112     }
 113
 114     public static <T> T doWithICanvasSceneGraphProvider(Resource diagram, Function<ICanvasSceneGraphProvider, T> func) throws DatabaseException {
 115         Tuple2 result = Simantics.getSession().syncRequest(new ResourceRead<Tuple2>(diagram) {
 116
 117             @Override
 118             public Tuple2 perform(ReadGraph graph) throws DatabaseException {
 119                 Resource indexRoot = graph.syncRequest(new IndexRoot(resource));
 120                 String diagramRVI = Variables.getRVI(graph, resource);
 121                 return new Tuple2(indexRoot, diagramRVI);
 122             }
 123         });
 124         ICanvasSceneGraphProvider provider = DiagramNodeUtil.loadSceneGraphProvider((Resource) result.c0, diagram, (String) result.c1);
 125         try {
 126             return func.apply(provider);
 127         } finally {
 128             provider.dispose();
 129         }
 130     }
 131
 132     public static <T> T doWithCanvasContext(Resource diagram, Function1<ICanvasContext, T> func) throws DatabaseException {
 133         return doWithCanvasContext(diagram, (Function<ICanvasContext, T>) canvasContext -> func.apply(canvasContext));
 134     }
 135
 136     public static <T> T doWithCanvasContext(Resource diagram, Function<ICanvasContext, T> func) throws DatabaseException {
 137         return doWithICanvasSceneGraphProvider(diagram, (Function<ICanvasSceneGraphProvider, T>) provider -> func.apply(provider.getCanvasContext()));
 138     }
 139
 140         public static String getNodeTransform(ICanvasContext ctx, String name) {
 141
 142                 Set<TextNode> texts = NodeUtil.collectNodes(ctx.getSceneGraph(), TextNode.class);
 143                 for (TextNode text : texts) {
 144                         String nodeName = NodeUtil.getNodeName(text);
 145                         if (nodeName.equals(name)) {
 146                                 String transform = text.getTransform().toString();
 147                                 return transform;
 148                         }
 149                 }
 150                 return "No node found";
 151         }
 152
 153         public static String getNodeText(ICanvasContext ctx, String name) {
 154
 155                 Set<TextNode> texts = NodeUtil.collectNodes(ctx.getSceneGraph(), TextNode.class);
 156                 for (TextNode text : texts) {
 157                         String nodeName = NodeUtil.getNodeName(text);
 158                         if (nodeName.equals(name)) {
 159                                 String texti = text.getText();
 160                                 return texti;
 161                         }
 162                 }
 163                 return "No node found";
 164         }
 165
 166         public static String getNodeCount(ICanvasContext ctx) {
 167                 G2DSceneGraph g2 = ctx.getSceneGraph();
 168                 int amount = NodeUtil.countTreeNodes(g2);
 169                 return "Node count: " + amount;
 170         }
 171
 172     public static String getAllNodes (ICanvasContext ctx) {
 173
 174         Set<G2DSceneGraph> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), G2DSceneGraph.class);
 175         int amount = g2.size() +1;
 176         return "All nodes: " + amount;
 177     }
 178
 179     public static String getBoundsNodes (ICanvasContext ctx) {
 180
 181         Set<BoundsNode> bn = NodeUtil.collectNodes(ctx.getSceneGraph(), BoundsNode.class);
 182         int amount = bn.size();
 183         return "BoundsNodes: " + amount;
 184     }
 185
 186     public static String getBackgroundNodes (ICanvasContext ctx) {
 187
 188         Set<BackgroundNode> bg = NodeUtil.collectNodes(ctx.getSceneGraph(), BackgroundNode.class);
 189         int amount = bg.size();
 190         return "BackgroundNodes: " + amount;
 191     }
 192
 193     public static String getDataNodes (ICanvasContext ctx) {
 194
 195         Set<DataNode> dn = NodeUtil.collectNodes(ctx.getSceneGraph(), DataNode.class);
 196         int amount = dn.size();
 197         return "DataNodes: " + amount;
 198     }
 199
 200     public static String getNavigationNodes (ICanvasContext ctx) {
 201
 202         Set<NavigationNode> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), NavigationNode.class);
 203         int amount = g2.size();
 204         return "NavigationNodes: " + amount;
 205     }
 206
 207     public static String getParentNodes (ICanvasContext ctx) {
 208
 209         Set<G2DParentNode> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), G2DParentNode.class);
 210         int amount = g2.size();
 211         return "ParentNodes: " + amount;
 212     }
 213
 214     public static String getDecorationNodes (ICanvasContext ctx) {
 215
 216         Set<DecorationSVGNode> deco = NodeUtil.collectNodes(ctx.getSceneGraph(), DecorationSVGNode.class);
 217         int amount = deco.size();
 218         return "DecorationNodes: " + amount;
 219     }
 220
 221     public static String getSingleElementNodes (ICanvasContext ctx) {
 222
 223         Set<SingleElementNode> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), SingleElementNode.class);
 224         int amount = g2.size();
 225         return "SingleElementNodes: " + amount;
 226     }
 227
 228     public static String getConnectionNodes (ICanvasContext ctx) {
 229
 230         Set<ConnectionNode> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), ConnectionNode.class);
 231         int amount = g2.size();
 232         return "ConnectionNodes: " + amount;
 233     }
 234
 235     public static String getTextNodes (ICanvasContext ctx) {
 236
 237         Set<TextNode> tn = NodeUtil.collectNodes(ctx.getSceneGraph(), TextNode.class);
 238         Set<TextGridNode> tgn = NodeUtil.collectNodes(ctx.getSceneGraph(), TextGridNode.class);
 239         int amount = tn.size() + tgn.size();
 240         return "TextNodes: " + amount;
 241     }
 242
 243     public static String getItemNodes (ICanvasContext ctx) {
 244
 245         Set<ItemNode> item = NodeUtil.collectNodes(ctx.getSceneGraph(), ItemNode.class);
 246         int amount = item.size();
 247         return "ItemNodes: " + amount;
 248     }
 249
 250     public static String editNodeText (ICanvasContext ctx, String module, String previous_value, String new_value) {
 251
 252         Set<TextNode> textGridNodes = NodeUtil.collectNodes(ctx.getSceneGraph(), TextNode.class);
 253         for (TextNode modulenode : textGridNodes) {
 254                 if (module.equals(modulenode.getText())) {
 255                         //System.out.println("Module what we were looking for: " + module);
 256                         //System.out.println("Modulenode: " + modulenode.getText());
 257
 258                         ParentNode<?> parentnode = modulenode.getParent();
 259                         //System.out.println("Parentnode: " + parentnode);
 260
 261                         Collection<TextNode> textnodes = (Collection<TextNode>) parentnode.getNodes();
 262                         for (TextNode valuenode : textnodes) {
 263                                 if (previous_value.equals(valuenode.getText())) {
 264                                         //System.out.println("Value what we were looking for: " + previous_value);
 265                                         //System.out.println("Valuenode: " + valuenode.getText());
 266
 267                                         //valuenode.setEditMode(true);
 268                                         valuenode.activateEdit(0, null, ctx);
 269                                         valuenode.setText(new_value);
 270                                         valuenode.fireTextEditingEnded();
 271
 272                                         //System.out.println("valuenode modified: " + valuenode);
 273                                         return "Modified module " + module + " with value " + new_value;
 274                                 }
 275                         }
 276                         return "Not found module : " + module;
 277                 }
 278         }
 279         return "No nodes in scenegraph!";
 280     }
 281
 282     /**
 283      * Returns background color of a canvasContext or null.
 284      * @param ctx
 285      * @return color in RGBA List<Integer> format, or null.
 286      */
 287     public static List<Integer> getBackgroundColor(ICanvasContext ctx) {
 288         Color color = ctx.getDefaultHintContext().getHint(Hints.KEY_BACKGROUND_COLOR);
 289         if (color == null)
 290                 return null;
 291         ArrayList<Integer> rgba = new ArrayList<>(4);
 292         rgba.add(color.getRed());
 293         rgba.add(color.getGreen());
 294         rgba.add(color.getBlue());
 295         rgba.add(color.getAlpha());
 296         return rgba;
 297     }
 298
 299     public static String sceneGraphTest (ICanvasContext ctx, String module, String value) {
 300
 301         boolean module_founded = false;
 302         boolean value_founded = false;
 303
 304         Set<G2DSceneGraph> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), G2DSceneGraph.class);
 305         System.out.println("Total amount of nodes: " + g2.size() + 1);
 306
 307         Set<TextGridNode> grid = NodeUtil.collectNodes(ctx.getSceneGraph(), TextGridNode.class);
 308         Integer textGridNodeAmount = grid.size();
 309         System.out.println("Amount of TextGridNodes " + textGridNodeAmount);
 310
 311         Set<TextNode> texts = NodeUtil.collectNodes(ctx.getSceneGraph(), TextNode.class);
 312         Integer textNodeAmount = grid.size();
 313         System.out.println("Amount of TextNodes " + textNodeAmount);
 314
 315         for (TextNode node : texts) {
 316             if (module.equals(node.getText())) {
 317                 module_founded = true;
 318                 System.out.println("Correct module " + module + " founded.");
 319             }
 320             if (value.equals(node.getText())) {
 321                 value_founded = true;
 322                 System.out.println("Correct value " + value + " founded.");
 323             }
 324         }
 325
 326         if (value_founded == true && module_founded == true) {
 327                 return "Found both correct module " + module + " and value " + value;
 328         }
 329         if (value_founded == false && module_founded == true) {
 330                 return "Found only correct module " + module + " but not value " + value;
 331         }
 332         if (value_founded == true && module_founded == false) {
 333                 return "Found only correct value " + value + " but not module " + module;
 334         }
 335         else {
 336                 return "Didn't found either module " + module + " or value " + value;
 337         }
 338     }
 339
 340     public static boolean copyPaste (final ICanvasContext source_ctx, final ICanvasContext target_ctx, List<Resource> modules) throws DatabaseException {
 341
 342         IDiagram idiagram = source_ctx.getDefaultHintContext().getHint(DiagramHints.KEY_DIAGRAM);
 343
 344                 DataElementMap dem = idiagram.getDiagramClass().getAtMostOneItemOfClass(DataElementMap.class);
 345                 if (dem != null) {
 346                         final Collection<IElement> newSelection = new ArrayList<IElement>();
 347                         for (Resource module : modules) {
 348                                 IElement element = dem.getElement(idiagram, module);
 349                                 if (element != null) {
 350                                         newSelection.add(element);
 351                                 } else {
 352                                         throw new DatabaseException("Could not find IElement for " + element);
 353                                 }
 354                         }
 355
 356                         ThreadUtils.syncExec(source_ctx.getThreadAccess(), new Runnable() {
 357                     @Override
 358                     public void run() {
 359                         if (source_ctx.isDisposed())
 360                             return;
 361                         Selection selection = source_ctx.getAtMostOneItemOfClass(Selection.class);
 362                         if (selection != null) {
 363                             // This prevents workbench selection from being left over.
 364                             // Also prevents scene graph crap from being left on the screen.
 365                             selection.setSelection(0, newSelection);
 366                         }
 367                                 CanvasUtils.sendCommand(source_ctx, Commands.COPY);
 368                                 CanvasUtils.sendCommand(target_ctx, Commands.PASTE);
 369                     }
 370                 });
 371
 372                 //}
 373
 374                 while(source_ctx.getEventQueue().size() > 0) {
 375                         try {
 376                                 Thread.sleep(10);
 377                         } catch (InterruptedException e) {
 378                                 throw new DatabaseException(e);
 379                         }
 380                 }
 381
 382                 ThreadUtils.syncExec(source_ctx.getThreadAccess(), new Runnable() {
 383             @Override
 384             public void run() {
 385             }
 386         });
 387
 388                 }
 389                 return true;
 390     }
 391
 392         static class Generator extends SVGGraphics2D {
 393
 394                 int elemLevel = 0;
 395                 String newElementId = null;
 396                 ArrayList<Element> elements = new ArrayList<Element>();
 397
 398                 public static final String svgNS = "http://www.w3.org/2000/svg";
 399
 400                 public Generator(SVGGeneratorContext ctx, boolean textAsShapes) {
 401                         super(ctx, textAsShapes);
 402                 }
 403
 404                 public Generator(Document document) {
 405                         super(document);
 406                         // prevent batik comment in each g-element
 407                         getGeneratorContext().setComment(null);
 408                 }
 409
 410                 @Override
 411                 public Element getRoot() {
 412                         Element root = super.getRoot();
 413                         for(Element e : elements) {
 414                                 root.appendChild(e);
 415                         }
 416                         return root;
 417                 }
 418
 419                 @Override
 420                 public void setRenderingHint(Key arg0, Object arg1) {
 421                         if(G2DRenderingHints.KEY_BEGIN_ELEMENT == arg0) {
 422                                 elemLevel++;
 423                         }
 424                         if(G2DRenderingHints.KEY_ELEMENT_ID == arg0) {
 425                                 if(arg1 != null)
 426                                         newElementId = arg1.toString();
 427                                 else
 428                                         newElementId = UUID.randomUUID().toString();
 429                         }
 430                         if(G2DRenderingHints.KEY_END_ELEMENT == arg0) {
 431                                 elemLevel--;
 432                                 if(elemLevel == 0) {
 433                                         Element group = getDOMFactory().createElement(SVG_G_TAG);
 434                                         //Element group = getDOMFactory().createElementNS(SVG_NAMESPACE_URI, SVG_G_TAG);
 435                                         group.setAttributeNS(null, "id", newElementId);
 436                                         group.setAttributeNS(null, "class", arg1.toString());
 437                                         getRoot(group);
 438                                         elements.add(group);
 439                                 }
 440                         }
 441                         super.setRenderingHint(arg0, arg1);
 442                 }
 443
 444         }
 445
 446         public static Element renderSVGNode(SVGGraphics2D svgGenerator, IG2DNode node) {
 447
 448                 try {
 449
 450                         svgGenerator.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
 451                         svgGenerator.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
 452                         svgGenerator.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
 453
 454                         node.render(svgGenerator);
 455
 456                 } catch (Throwable t) {
 457                         LOGGER.error("Problems rendering scene graph to SVG", t);
 458                 }
 459
 460                 return svgGenerator.getRoot();
 461         }
 462
 463         public static String printSVGDocument(Element doce) {
 464
 465                 StringBuilder result = new StringBuilder();
 466
 467                 NodeList nl =  doce.getChildNodes();
 468
 469                 for(int i=0;i<nl.getLength();i++) {
 470
 471                         ByteArrayOutputStream os = new ByteArrayOutputStream();
 472
 473                         try {
 474
 475                                 TransformerFactory tf = TransformerFactory.newInstance();
 476                                 Transformer transformer = tf.newTransformer();
 477                                 transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
 478                                 transformer.setOutputProperty(OutputKeys.STANDALONE, "no");
 479                                 transformer.setOutputProperty(OutputKeys.METHOD, "xml");
 480                                 transformer.setOutputProperty(OutputKeys.INDENT, "yes");
 481                                 transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
 482                                 transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
 483
 484                                 transformer.transform(new DOMSource(nl.item(i)),
 485                                                 new StreamResult(new OutputStreamWriter(os, "UTF-8")));
 486
 487                                 os.flush();
 488                                 os.close();
 489
 490                         } catch (Throwable t) {
 491                                 LOGGER.error("Problems formatting SVGDocument to text.", t);
 492                         }
 493
 494                         result.append(new String(os.toByteArray()));
 495
 496                 }
 497
 498                 return result.toString();
 499
 500         }
 501
 502         public static String renderSVG3(ICanvasContext ctx) {
 503                 return renderSVG3(ctx, -1, -1);
 504         }
 505
 506         public static String renderSVG3(ICanvasContext ctx, double width, double height) {
 507         return renderSVG0(width, height, ctx, p0 -> p0.stream().collect(Collectors.toMap(p1 -> p1, p2 -> p2)));
 508         }
 509
 510     /**
 511      * @param graph
 512      * @param component
 513      * @throws DatabaseException
 514      */
 515     private static Object[] createURIBasedL0Identifier(ReadGraph graph, Resource component) throws DatabaseException {
 516         String uri = graph.getPossibleURI(component);
 517         int hashCode = uri.hashCode();
 518         Random random = new Random(hashCode);
 519         long l1 = random.nextLong();
 520         long l2 = random.nextLong();
 521         return new Object[] { l1, l2 };
 522     }
 523
 524     /**
 525      * Default no-op mapper
 526      */
 527     private static final Function1<Set<?>, Map<?, ?>> mapper = p0 -> p0.stream().collect(Collectors.toMap(p1 -> p1, p2 -> p2));
 528
 529     public static String renderSVG(ICanvasContext ctx, double width, double height) {
 530         return renderSVG0(width, height, ctx, mapper);
 531     }
 532
 533     public static String renderSVG(ICanvasContext ctx) {
 534         return renderSVG(ctx, -1, -1);
 535     }
 536
 537     public static String renderSVGMapIdentifiers(ICanvasContext ctx) {
 538                 return renderSVGMapIdentifiers(ctx, -1, -1);
 539     }
 540
 541     /**
 542      * Renders ICanvasContext into SVG by mapping the SVG id's into URI based
 543      * GUID's
 544      *
 545      * @param ctx
 546      * @return
 547      */
 548     public static String renderSVGMapIdentifiers(ICanvasContext ctx, double width, double height) {
 549         return renderSVG0(width, height, ctx, new Function1<Set<?>, Map<?, ?>>() {
 550
 551             @Override
 552             public Map<?, ?> apply(Set<?> p0) {
 553                 try {
 554                     return Simantics.getSession().syncRequest(new UnaryRead<Set<?>, Map<?, ?>>(p0) {
 555
 556                         @Override
 557                         public Map<?, ?> perform(ReadGraph graph) throws DatabaseException {
 558                             ModelingResources MOD = ModelingResources.getInstance(graph);
 559                             DiagramResource DIA = DiagramResource.getInstance(graph);
 560                             Layer0 L0 = Layer0.getInstance(graph);
 561                             return parameter.stream().collect(Collectors.toMap(p -> p, p -> {
 562                                 try {
 563                                     if (p instanceof Resource) {
 564                                         Resource element = (Resource) p;
 565                                         if (graph.isInstanceOf(element, DIA.Element)) {
 566                                             Resource component = graph.getPossibleObject(element, MOD.ElementToComponent);
 567                                             if (component != null) {
 568                                                 GUID identifier = graph.getPossibleRelatedValue(component, L0.identifier, GUID.BINDING);
 569                                                 if (identifier != null) {
 570                                                     return Arrays.toString(createURIBasedL0Identifier(graph, component));
 571                                                 } else {
 572                                                     LOGGER.error("Component {} does not have GUID identifier!", component);
 573                                                 }
 574                                             } else if (graph.isInstanceOf(element, DIA.Connection) || graph.isInstanceOf(element, DIA.Terminal)) {
 575                                                 // Ok, lets create a hashcode for connections and terminals as they do not have identifiers
 576                                                 return graph.getURI(element).hashCode();
 577                                             } else {
 578                                                 // Ok, lets create a hashcode or either return empty string in cases where no ID is required
 579                                                 if (graph.hasStatement(element, L0.HasName))
 580                                                     return graph.getURI(element).hashCode();
 581                                                 return "";
 582                                             }
 583                                         }
 584                                     } else {
 585                                         LOGGER.error("Parameter p {} is not resource but it is {}", p, p.getClass());
 586                                     }
 587                                     return p;
 588                                 } catch (DatabaseException e) {
 589                                     throw new RuntimeDatabaseException(e);
 590                                 }
 591                             }));
 592                         }
 593                     });
 594                 } catch (DatabaseException e) {
 595                     LOGGER.error("Could not apply mappings", e);
 596                     throw new RuntimeDatabaseException(e);
 597                 }
 598             }
 599         });
 600         }
 601
 602     static class RenderSVGContext {
 603
 604         Map<String,StringBuilder> documents = new HashMap<>();
 605
 606         public void append(String[] keys, String svgText) {
 607                 for(String key : keys) append(key, svgText);
 608         }
 609
 610         public void append(String key, String svgText) {
 611                 StringBuilder builder = documents.get(key);
 612                 if(builder == null) {
 613                         builder = new StringBuilder();
 614                         documents.put(key, builder);
 615                 }
 616                 builder.append(svgText);
 617         }
 618
 619         public void append(RenderSVGContext other) {
 620                 for(String key : other.documents.keySet()) {
 621                         append(key, other.get(key));
 622                 }
 623         }
 624
 625         public String get(String key) {
 626                 StringBuilder builder = documents.get(key);
 627                 if(builder == null) return "";
 628                 else return builder.toString();
 629         }
 630
 631     }
 632
 633         private static String renderSVG0(double width, double height, ICanvasContext ctx, Function1<Set<?>, Map<?, ?>> mappingFunction) {
 634
 635                 // Get a DOMImplementation.
 636                 DOMImplementation domImpl = GenericDOMImplementation.getDOMImplementation();
 637
 638                 // Create an instance of org.w3c.dom.Document.
 639                 String svgNS = "http://www.w3.org/2000/svg";
 640                 Document document = domImpl.createDocument(svgNS, "svg", null);
 641
 642                 // Create an instance of the SVG Generator.
 643                 SVGGraphics2D svgGenerator = new Generator(document);
 644
 645                 RenderSVGContext result = new RenderSVGContext();
 646
 647                 double[] matrix = new double[6];
 648                 try {
 649
 650             Selection selection = ctx.getAtMostOneItemOfClass(Selection.class);
 651             if (selection != null) {
 652                 // This prevents workbench selection from being left over.
 653                 // Also prevents scene graph crap from being left on the screen.
 654                 IDiagram d = ctx.getDefaultHintContext().getHint(DiagramHints.KEY_DIAGRAM);
 655                 selection.setSelection(0, d.getElements());
 656             }
 657
 658                         G2DSceneGraph sg = ctx.getSceneGraph();
 659                         sg.performCleanup();
 660                         G2DParentNode root = (G2DParentNode) sg.getRootNode();
 661
 662                         // rtree is the actual content of the diagram
 663                         RTreeNode rtree = NodeUtil.getNearestChildByClass(root, RTreeNode.class);
 664                         Rectangle2D rtreeBounds = NodeUtil.getLocalBounds(rtree);
 665
 666                         // get the bounds of the content
 667                         Rectangle2D content = rtreeBounds;
 668
 669                         // To account for dynamic padding of selection rectangles (5 units + stroke width)
 670                         int offset = 6;
 671
 672                         double scale = width < 0 || height < 0 ? 1.0 : Math.min((width - 2*offset) / content.getWidth(), (height - 2*offset) / content.getHeight());
 673
 674                         AffineTransform tr = new AffineTransform();
 675                         tr.translate(offset, offset);
 676                         tr.scale(scale, scale);
 677                         tr.translate(-content.getX(), -content.getY());
 678                         tr.getMatrix(matrix);
 679                         //svgGenerator.translate(offset, offset);
 680                         //svgGenerator.scale(scale, scale);
 681                         // translate svgGenerator to the x and y coordinates of current content
 682                         //svgGenerator.translate(-content.getX(), -content.getY());
 683
 684                         svgGenerator.setSVGCanvasSize(new Dimension((int)Math.ceil(scale * content.getWidth()) + 2*offset, (int)Math.ceil(scale * content.getHeight()) + 2*offset));
 685                         //svgGenerator.setClip(content);
 686
 687                         result.append(MAIN_SECTION, "<g class=\"symbols\">");
 688                         result.append(SELECTION_SECTION, "<g class=\"selections\">");
 689                         result.append(SELECTION_MASK_SECTION, "<g class=\"selectionMasks\">");
 690
 691                         KeyVisitor keyVisitor = new KeyVisitor();
 692                         sg.accept(keyVisitor);
 693
 694                         Set<Object> keys = keyVisitor.getKeys();
 695
 696                         Map<?, ?> mappings = mappingFunction.apply(keys);
 697
 698                         IG2DNodeVisitor visitor = new PrintingVisitor(svgGenerator, result, mappings);
 699
 700                         sg.accept(visitor);
 701
 702                 } catch (Throwable t) {
 703                         LOGGER.error("Problems rendering canvas context to SVG", t);
 704                 }
 705
 706
 707                 result.append(ALL_SECTIONS, "</g>");
 708
 709                 StringBuilder res = new StringBuilder();
 710                 res.append("<svg width=\"100%\" height=\"100%\" stroke=\"black\">");
 711                 res.append("<g transform=\"matrix(").append(matrix[0]).append(",").append(matrix[1]).append(",").append(matrix[2]).append(",").append(matrix[3]).append(",").append(matrix[4]).append(",").append(matrix[5]).append(")\">");
 712                 res.append(result.get(MAIN_SECTION));
 713                 res.append(result.get(SELECTION_SECTION));
 714                 res.append(result.get(SELECTION_MASK_SECTION));
 715                 res.append("</g>");
 716                 res.append("</svg>");
 717
 718 //              System.err.println(" == FINAL RESULT == ");
 719 //              System.err.println(res.toString());
 720
 721                 return res.toString();
 722
 723         }
 724
 725
 726
 727         private static class KeyVisitor implements IG2DNodeVisitor {
 728
 729         private Set<Object> keys = new HashSet<>();
 730
 731         @Override
 732         public void enter(IG2DNode node) {
 733             if (node instanceof SingleElementNode) {
 734                 Object key = ((SingleElementNode) node).getKey();
 735                 if (key != null) {
 736                     keys.add(key);
 737                 }
 738             }
 739         }
 740
 741         @Override
 742         public void leave(IG2DNode node) {
 743             // Nothing to do
 744         }
 745
 746         public Set<Object> getKeys() {
 747             return keys;
 748         }
 749         }
 750
 751         private static class PrintingVisitor implements IG2DNodeVisitor {
 752
 753         int indent = 0;
 754
 755         HashMap<SingleElementNode,RenderSVGContext> senBuilders = new HashMap<>();
 756
 757         private RenderSVGContext result;
 758         private SVGGraphics2D svgGenerator;
 759
 760         private Map<?, ?> mappings;
 761
 762         public PrintingVisitor(SVGGraphics2D svgGenerator, RenderSVGContext result, Map<?, ?> mappings) {
 763             this.result = result;
 764             this.mappings = mappings;
 765             this.svgGenerator = svgGenerator;
 766         }
 767
 768         private String getKey(SingleElementNode node) {
 769             String key;
 770                 if(node.getKey() != null) {
 771                 if (mappings.containsKey(node.getKey()))
 772                     key = mappings.get(node.getKey()).toString();
 773                 else
 774                     key = node.getKey().toString();
 775                 } else {
 776                         key = Long.toString(node.getId());
 777                 }
 778             return key;
 779         }
 780
 781         @Override
 782         public void enter(IG2DNode node) {
 783
 784                 RenderSVGContext parentBuilder = getParentBuilder(node);
 785
 786             indent++;
 787             if(node instanceof ConnectionNode) {
 788
 789                 for(RouteGraphNode n : NodeUtil.collectNodes(node, RouteGraphNode.class)) {
 790                     n.setIgnoreSelection(true);
 791                 }
 792
 793                 String key = getKey((ConnectionNode) node);
 794                 parentBuilder.append(MAIN_SECTION, "\n<g class=\"connection\" id=\"" + key + "\">");
 795                 parentBuilder.append(SELECTION_SECTION, "\n<g style=\"visibility:hidden\" class=\"selection\" id=\"" + key + "\">");
 796                 parentBuilder.append(SELECTION_MASK_SECTION, "\n<g class=\"selectionMask\" opacity=\"0.001\" id=\"" + key + "\">");
 797
 798                 Element doc = renderSVGNode(svgGenerator, (IG2DNode)node);
 799                 String svg = printSVGDocument(doc);
 800                 parentBuilder.append(MAIN_SECTION, svg);
 801
 802                 for(RouteGraphNode n : NodeUtil.collectNodes(node, RouteGraphNode.class)) {
 803                     n.setIgnoreSelection(false);
 804                 }
 805
 806                 doc = renderSVGNode(svgGenerator, (IG2DNode)node);
 807                 svg = printSVGDocument(doc);
 808                 parentBuilder.append(SELECTION_SECTION, svg);
 809
 810                 BasicStroke bs = new BasicStroke(10f);
 811
 812                 for(RouteGraphNode n : NodeUtil.collectNodes(node, RouteGraphNode.class)) {
 813                     n.setDynamicStroke(bs);
 814                 }
 815
 816                 doc = renderSVGNode(svgGenerator, (IG2DNode)node);
 817                 svg = printSVGDocument(doc);
 818                 parentBuilder.append(SELECTION_MASK_SECTION, svg);
 819
 820                 parentBuilder.append(SELECTION_MASK_SECTION, "\n</g>");
 821                 parentBuilder.append(SELECTION_SECTION, "\n</g>");
 822                 parentBuilder.append(MAIN_SECTION, "\n</g>");
 823
 824             } else if (node instanceof SelectionNode) {
 825
 826                 SelectionNode n = (SelectionNode)node;
 827                 SingleElementNode parentSEN = (SingleElementNode)NodeUtil.getNearestParentOfType(node, SingleElementNode.class);
 828                 if(parentSEN != null) {
 829
 830                         RenderSVGContext parentBuilder2 = getParentBuilder(parentSEN);
 831
 832                     String key = getKey(parentSEN);
 833                     n.setIgnore(false);
 834                     Element doc = renderSVGNode(svgGenerator, (IG2DNode)node);
 835                     n.setIgnore(true);
 836                     String svg = printSVGDocument(doc);
 837                     parentBuilder2.append(SELECTION_SECTION, "\n<g style=\"visibility:hidden\" class=\"selection\" id=\"" + key + "\">");
 838                     parentBuilder2.append(SELECTION_SECTION, svg);
 839                     parentBuilder2.append(SELECTION_SECTION, "\n</g>");
 840                     parentBuilder2.append(SELECTION_MASK_SECTION, "\n<g class=\"selectionMask\" id=\"" + key /*+ "\" transform=\"" + matrixString + "\"*/+ "\">");
 841                     Rectangle2D rect = n.getRect();
 842                     // NaN
 843                     if(rect.getHeight() == rect.getHeight() && rect.getWidth() == rect.getWidth()) {
 844                             parentBuilder2.append(SELECTION_MASK_SECTION,"<rect style=\"fill:#fff\" opacity=\"0.001\"");
 845                             parentBuilder2.append(SELECTION_MASK_SECTION," x=\"" + rect.getX() + "\" y=\"" + rect.getY() + "\"");
 846                             parentBuilder2.append(SELECTION_MASK_SECTION," width=\"" + rect.getWidth() + "\" height=\"" + rect.getHeight() + "\"");
 847                             parentBuilder2.append(SELECTION_MASK_SECTION,"></rect>");
 848                     }
 849                     parentBuilder2.append(SELECTION_MASK_SECTION,"\n</g>");
 850
 851                 }
 852             } else if (node instanceof SVGNode) {
 853                 SVGNode svg = (SVGNode)node;
 854                 parentBuilder.append(MAIN_SECTION, svg.getSVGText());
 855             } else if (node instanceof G2DParentNode) {
 856                 AffineTransform at = node.getTransform();
 857                 if(node instanceof SingleElementNode) {
 858                     SingleElementNode sen = (SingleElementNode)node;
 859                     String key = getKey(sen);
 860                     String typeClass = sen.getTypeClass();
 861                     String clazz = "definedElement";
 862                     if(typeClass != null && !typeClass.isEmpty())
 863                         clazz = clazz + " " + typeClass;
 864
 865                     parentBuilder.append(MAIN_SECTION, "\n<g class=\""+clazz+"\" id=\"" + key + "\">");
 866                     senBuilders.put(sen, new RenderSVGContext());
 867                 }
 868                 if(!at.isIdentity()) {
 869                     if(at.getScaleX() == 1.0 && at.getScaleY() == 1.0 && at.getShearX() == 0.0 && at.getShearY() == 0.0) {
 870                         String m = "translate(" + at.getTranslateX() + " " + at.getTranslateY() + ")";
 871                         parentBuilder.append(ALL_SECTIONS, "\n<g transform=\"" + m + "\">");
 872                     } else {
 873                         double[] ds = new double[6];
 874                         at.getMatrix(ds);
 875                         String m = "matrix(" + ds[0] + " " + ds[1] + " " + ds[2] + " " + ds[3] + " " + ds[4] + " " + ds[5] + ")";
 876                         parentBuilder.append(ALL_SECTIONS, "\n<g transform=\"" + m + "\">");
 877                     }
 878                 }
 879             }
 880
 881             //enters.put(node, b.length());
 882
 883         }
 884
 885         private RenderSVGContext getParentBuilder(IG2DNode node) {
 886
 887             INode parentSEN = NodeUtil.getNearestParentOfType(node, SingleElementNode.class);
 888             if(parentSEN instanceof G2DSceneGraph) return result;
 889
 890             RenderSVGContext parentBuilder = senBuilders.get(parentSEN);
 891             if(parentBuilder == null) return result;
 892
 893             return parentBuilder;
 894
 895         }
 896
 897         @Override
 898         public void leave(IG2DNode node) {
 899
 900             if(node instanceof ConnectionNode || node instanceof SVGNode) {
 901                 // We are done
 902             } else if (node instanceof G2DParentNode) {
 903
 904                 RenderSVGContext parentBuilder = getParentBuilder(node);
 905
 906                 if(node instanceof SingleElementNode) {
 907                         SingleElementNode sen = (SingleElementNode)node;
 908                         RenderSVGContext b = senBuilders.get(sen);
 909                         String content = b.get(MAIN_SECTION);
 910                         if(content.isEmpty()) {
 911                                 if(sen.getKey() != null) {
 912
 913                                         for(SelectionNode n : NodeUtil.collectNodes(node, SelectionNode.class)) {
 914                                                 n.setIgnore(true);
 915                                         }
 916
 917                                         Element doc = renderSVGNode(svgGenerator, (IG2DNode)node);
 918                                         String svg = printSVGDocument(doc);
 919                                         parentBuilder.append(MAIN_SECTION, svg);
 920                                 }
 921                         } else {
 922                                 parentBuilder.append(b);
 923                         }
 924                 }
 925
 926                 AffineTransform at = node.getTransform();
 927                 if(!at.isIdentity()) {
 928                     parentBuilder.append(ALL_SECTIONS, "</g>");
 929                 }
 930                 if(node instanceof SingleElementNode) {
 931                     SingleElementNode sen = (SingleElementNode)node;
 932                     //if(sen.getKey() != null) {
 933                         parentBuilder.append(MAIN_SECTION, "</g>");
 934                     //}
 935                 }
 936             }
 937             indent --;
 938         }
 939         }
 940 }