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.Collection;
  13 import java.util.HashMap;
  14 import java.util.List;
  15 import java.util.Set;
  16 import java.util.UUID;
  17
  18 import javax.xml.transform.OutputKeys;
  19 import javax.xml.transform.Transformer;
  20 import javax.xml.transform.TransformerFactory;
  21 import javax.xml.transform.dom.DOMSource;
  22 import javax.xml.transform.stream.StreamResult;
  23
  24 import org.apache.batik.dom.GenericDOMImplementation;
  25 import org.apache.batik.svggen.SVGGeneratorContext;
  26 import org.apache.batik.svggen.SVGGraphics2D;
  27 import org.simantics.db.Resource;
  28 import org.simantics.db.exception.DatabaseException;
  29 import org.simantics.diagram.elements.DiagramNodeUtil;
  30 import org.simantics.diagram.elements.TextGridNode;
  31 import org.simantics.diagram.elements.TextNode;
  32 import org.simantics.g2d.canvas.ICanvasContext;
  33 import org.simantics.g2d.diagram.DiagramHints;
  34 import org.simantics.g2d.diagram.IDiagram;
  35 import org.simantics.g2d.diagram.handler.DataElementMap;
  36 import org.simantics.g2d.diagram.participant.Selection;
  37 import org.simantics.g2d.element.IElement;
  38 import org.simantics.g2d.scenegraph.ICanvasSceneGraphProvider;
  39 import org.simantics.g2d.utils.CanvasUtils;
  40 import org.simantics.scenegraph.INode;
  41 import org.simantics.scenegraph.ParentNode;
  42 import org.simantics.scenegraph.g2d.G2DParentNode;
  43 import org.simantics.scenegraph.g2d.G2DRenderingHints;
  44 import org.simantics.scenegraph.g2d.G2DSceneGraph;
  45 import org.simantics.scenegraph.g2d.IG2DNode;
  46 import org.simantics.scenegraph.g2d.IG2DNodeVisitor;
  47 import org.simantics.scenegraph.g2d.events.command.Commands;
  48 import org.simantics.scenegraph.g2d.nodes.BackgroundNode;
  49 import org.simantics.scenegraph.g2d.nodes.BoundsNode;
  50 import org.simantics.scenegraph.g2d.nodes.ConnectionNode;
  51 import org.simantics.scenegraph.g2d.nodes.DataNode;
  52 import org.simantics.scenegraph.g2d.nodes.DecorationSVGNode;
  53 import org.simantics.scenegraph.g2d.nodes.NavigationNode;
  54 import org.simantics.scenegraph.g2d.nodes.SVGNode;
  55 import org.simantics.scenegraph.g2d.nodes.SelectionNode;
  56 import org.simantics.scenegraph.g2d.nodes.SingleElementNode;
  57 import org.simantics.scenegraph.g2d.nodes.connection.RouteGraphNode;
  58 import org.simantics.scenegraph.g2d.nodes.spatial.RTreeNode;
  59 import org.simantics.scenegraph.utils.NodeUtil;
  60 import org.simantics.trend.impl.ItemNode;
  61 import org.simantics.utils.threads.ThreadUtils;
  62 import org.slf4j.Logger;
  63 import org.slf4j.LoggerFactory;
  64 import org.w3c.dom.DOMImplementation;
  65 import org.w3c.dom.Document;
  66 import org.w3c.dom.Element;
  67 import org.w3c.dom.NodeList;
  68
  69 public class SCLScenegraph {
  70
  71         private static final Logger LOGGER = LoggerFactory.getLogger(SCLScenegraph.class);
  72
  73         public static ICanvasSceneGraphProvider getICanvasSceneGraphProvider(Resource model, Resource diagram, String diagramRVI) throws DatabaseException, InterruptedException {
  74                 ICanvasSceneGraphProvider provider = DiagramNodeUtil.loadSceneGraphProvider(model, diagram, diagramRVI);
  75                 return provider;
  76         }
  77
  78         public static void disposeSceneGraphProvider(ICanvasSceneGraphProvider provider) {
  79                 provider.dispose();
  80         }
  81
  82         public static String getNodeTransform(ICanvasContext ctx, String name) {
  83
  84                 Set<TextNode> texts = NodeUtil.collectNodes(ctx.getSceneGraph(), TextNode.class);
  85                 for (TextNode text : texts) {
  86                         String nodeName = NodeUtil.getNodeName(text);
  87                         if (nodeName.equals(name)) {
  88                                 String transform = text.getTransform().toString();
  89                                 return transform;
  90                         }
  91                 }
  92                 return "No node found";
  93         }
  94
  95         public static String getNodeText(ICanvasContext ctx, String name) {
  96
  97                 Set<TextNode> texts = NodeUtil.collectNodes(ctx.getSceneGraph(), TextNode.class);
  98                 for (TextNode text : texts) {
  99                         String nodeName = NodeUtil.getNodeName(text);
 100                         if (nodeName.equals(name)) {
 101                                 String texti = text.getText();
 102                                 return texti;
 103                         }
 104                 }
 105                 return "No node found";
 106         }
 107
 108         public static String getNodeCount(ICanvasContext ctx) {
 109                 G2DSceneGraph g2 = ctx.getSceneGraph();
 110                 int amount = NodeUtil.countTreeNodes(g2);
 111                 return "Node count: " + amount;
 112         }
 113
 114     public static String getAllNodes (ICanvasContext ctx) {
 115
 116         Set<G2DSceneGraph> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), G2DSceneGraph.class);
 117         int amount = g2.size() +1;
 118         return "All nodes: " + amount;
 119     }
 120
 121     public static String getBoundsNodes (ICanvasContext ctx) {
 122
 123         Set<BoundsNode> bn = NodeUtil.collectNodes(ctx.getSceneGraph(), BoundsNode.class);
 124         int amount = bn.size();
 125         return "BoundsNodes: " + amount;
 126     }
 127
 128     public static String getBackgroundNodes (ICanvasContext ctx) {
 129
 130         Set<BackgroundNode> bg = NodeUtil.collectNodes(ctx.getSceneGraph(), BackgroundNode.class);
 131         int amount = bg.size();
 132         return "BackgroundNodes: " + amount;
 133     }
 134
 135     public static String getDataNodes (ICanvasContext ctx) {
 136
 137         Set<DataNode> dn = NodeUtil.collectNodes(ctx.getSceneGraph(), DataNode.class);
 138         int amount = dn.size();
 139         return "DataNodes: " + amount;
 140     }
 141
 142     public static String getNavigationNodes (ICanvasContext ctx) {
 143
 144         Set<NavigationNode> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), NavigationNode.class);
 145         int amount = g2.size();
 146         return "NavigationNodes: " + amount;
 147     }
 148
 149     public static String getParentNodes (ICanvasContext ctx) {
 150
 151         Set<G2DParentNode> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), G2DParentNode.class);
 152         int amount = g2.size();
 153         return "ParentNodes: " + amount;
 154     }
 155
 156     public static String getDecorationNodes (ICanvasContext ctx) {
 157
 158         Set<DecorationSVGNode> deco = NodeUtil.collectNodes(ctx.getSceneGraph(), DecorationSVGNode.class);
 159         int amount = deco.size();
 160         return "DecorationNodes: " + amount;
 161     }
 162
 163     public static String getSingleElementNodes (ICanvasContext ctx) {
 164
 165         Set<SingleElementNode> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), SingleElementNode.class);
 166         int amount = g2.size();
 167         return "SingleElementNodes: " + amount;
 168     }
 169
 170     public static String getConnectionNodes (ICanvasContext ctx) {
 171
 172         Set<ConnectionNode> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), ConnectionNode.class);
 173         int amount = g2.size();
 174         return "ConnectionNodes: " + amount;
 175     }
 176
 177     public static String getTextNodes (ICanvasContext ctx) {
 178
 179         Set<TextNode> tn = NodeUtil.collectNodes(ctx.getSceneGraph(), TextNode.class);
 180         Set<TextGridNode> tgn = NodeUtil.collectNodes(ctx.getSceneGraph(), TextGridNode.class);
 181         int amount = tn.size() + tgn.size();
 182         return "TextNodes: " + amount;
 183     }
 184
 185     public static String getItemNodes (ICanvasContext ctx) {
 186
 187         Set<ItemNode> item = NodeUtil.collectNodes(ctx.getSceneGraph(), ItemNode.class);
 188         int amount = item.size();
 189         return "ItemNodes: " + amount;
 190     }
 191
 192     public static String editNodeText (ICanvasContext ctx, String module, String previous_value, String new_value) {
 193
 194         Set<TextNode> textGridNodes = NodeUtil.collectNodes(ctx.getSceneGraph(), TextNode.class);
 195         for (TextNode modulenode : textGridNodes) {
 196                 if (module.equals(modulenode.getText())) {
 197                         //System.out.println("Module what we were looking for: " + module);
 198                         //System.out.println("Modulenode: " + modulenode.getText());
 199
 200                         ParentNode<?> parentnode = modulenode.getParent();
 201                         //System.out.println("Parentnode: " + parentnode);
 202
 203                         Collection<TextNode> textnodes = (Collection<TextNode>) parentnode.getNodes();
 204                         for (TextNode valuenode : textnodes) {
 205                                 if (previous_value.equals(valuenode.getText())) {
 206                                         //System.out.println("Value what we were looking for: " + previous_value);
 207                                         //System.out.println("Valuenode: " + valuenode.getText());
 208
 209                                         //valuenode.setEditMode(true);
 210                                         valuenode.activateEdit(0, null, ctx);
 211                                         valuenode.setText(new_value);
 212                                         valuenode.fireTextEditingEnded();
 213
 214                                         //System.out.println("valuenode modified: " + valuenode);
 215                                         return "Modified module " + module + " with value " + new_value;
 216                                 }
 217                         }
 218                         return "Not found module : " + module;
 219                 }
 220         }
 221         return "No nodes in scenegraph!";
 222     }
 223
 224     public static String sceneGraphTest (ICanvasContext ctx, String module, String value) {
 225
 226         boolean module_founded = false;
 227         boolean value_founded = false;
 228
 229         Set<G2DSceneGraph> g2 = NodeUtil.collectNodes(ctx.getSceneGraph(), G2DSceneGraph.class);
 230         System.out.println("Total amount of nodes: " + g2.size() + 1);
 231
 232         Set<TextGridNode> grid = NodeUtil.collectNodes(ctx.getSceneGraph(), TextGridNode.class);
 233         Integer textGridNodeAmount = grid.size();
 234         System.out.println("Amount of TextGridNodes " + textGridNodeAmount);
 235
 236         Set<TextNode> texts = NodeUtil.collectNodes(ctx.getSceneGraph(), TextNode.class);
 237         Integer textNodeAmount = grid.size();
 238         System.out.println("Amount of TextNodes " + textNodeAmount);
 239
 240         for (TextNode node : texts) {
 241             if (module.equals(node.getText())) {
 242                 module_founded = true;
 243                 System.out.println("Correct module " + module + " founded.");
 244             }
 245             if (value.equals(node.getText())) {
 246                 value_founded = true;
 247                 System.out.println("Correct value " + value + " founded.");
 248             }
 249         }
 250
 251         if (value_founded == true && module_founded == true) {
 252                 return "Found both correct module " + module + " and value " + value;
 253         }
 254         if (value_founded == false && module_founded == true) {
 255                 return "Found only correct module " + module + " but not value " + value;
 256         }
 257         if (value_founded == true && module_founded == false) {
 258                 return "Found only correct value " + value + " but not module " + module;
 259         }
 260         else {
 261                 return "Didn't found either module " + module + " or value " + value;
 262         }
 263     }
 264
 265     public static boolean copyPaste (final ICanvasContext source_ctx, final ICanvasContext target_ctx, List<Resource> modules) throws DatabaseException {
 266
 267         IDiagram idiagram = source_ctx.getDefaultHintContext().getHint(DiagramHints.KEY_DIAGRAM);
 268
 269                 DataElementMap dem = idiagram.getDiagramClass().getAtMostOneItemOfClass(DataElementMap.class);
 270                 if (dem != null) {
 271                         final Collection<IElement> newSelection = new ArrayList<IElement>();
 272                         for (Resource module : modules) {
 273                                 IElement element = dem.getElement(idiagram, module);
 274                                 if (element != null) {
 275                                         newSelection.add(element);
 276                                 } else {
 277                                         throw new DatabaseException("Could not find IElement for " + element);
 278                                 }
 279                         }
 280
 281                         ThreadUtils.syncExec(source_ctx.getThreadAccess(), new Runnable() {
 282                     @Override
 283                     public void run() {
 284                         if (source_ctx.isDisposed())
 285                             return;
 286                         Selection selection = source_ctx.getAtMostOneItemOfClass(Selection.class);
 287                         if (selection != null) {
 288                             // This prevents workbench selection from being left over.
 289                             // Also prevents scene graph crap from being left on the screen.
 290                             selection.setSelection(0, newSelection);
 291                         }
 292                                 CanvasUtils.sendCommand(source_ctx, Commands.COPY);
 293                                 CanvasUtils.sendCommand(target_ctx, Commands.PASTE);
 294                     }
 295                 });
 296
 297                 //}
 298
 299                 while(source_ctx.getEventQueue().size() > 0) {
 300                         try {
 301                                 Thread.sleep(10);
 302                         } catch (InterruptedException e) {
 303                                 throw new DatabaseException(e);
 304                         }
 305                 }
 306
 307                 ThreadUtils.syncExec(source_ctx.getThreadAccess(), new Runnable() {
 308             @Override
 309             public void run() {
 310             }
 311         });
 312
 313                 }
 314                 return true;
 315     }
 316
 317         static class Generator extends SVGGraphics2D {
 318
 319                 int elemLevel = 0;
 320                 String newElementId = null;
 321                 ArrayList<Element> elements = new ArrayList<Element>();
 322
 323                 public static final String svgNS = "http://www.w3.org/2000/svg";
 324
 325                 public Generator(SVGGeneratorContext ctx, boolean joku) {
 326                         super(ctx, joku);
 327                 }
 328
 329                 public Generator(Document document) {
 330                         super(document);
 331                 }
 332
 333                 @Override
 334                 public Element getRoot() {
 335                         Element root = super.getRoot();
 336                         for(Element e : elements) {
 337                                 root.appendChild(e);
 338                         }
 339                         return root;
 340                 }
 341
 342                 @Override
 343                 public void setRenderingHint(Key arg0, Object arg1) {
 344                         if(G2DRenderingHints.KEY_BEGIN_ELEMENT == arg0) {
 345                                 elemLevel++;
 346                         }
 347                         if(G2DRenderingHints.KEY_ELEMENT_ID == arg0) {
 348                                 if(arg1 != null)
 349                                         newElementId = arg1.toString();
 350                                 else
 351                                         newElementId = UUID.randomUUID().toString();
 352                         }
 353                         if(G2DRenderingHints.KEY_END_ELEMENT == arg0) {
 354                                 elemLevel--;
 355                                 if(elemLevel == 0) {
 356                                         Element group = getDOMFactory().createElement(SVG_G_TAG);
 357                                         //Element group = getDOMFactory().createElementNS(SVG_NAMESPACE_URI, SVG_G_TAG);
 358                                         group.setAttributeNS(null, "id", newElementId);
 359                                         group.setAttributeNS(null, "class", arg1.toString());
 360                                         getRoot(group);
 361                                         elements.add(group);
 362                                 }
 363                         }
 364                         super.setRenderingHint(arg0, arg1);
 365                 }
 366
 367         }
 368
 369         public static Element renderSVGNode(IG2DNode node) {
 370
 371                 // Get a DOMImplementation.
 372                 DOMImplementation domImpl = GenericDOMImplementation.getDOMImplementation();
 373
 374                 // Create an instance of org.w3c.dom.Document.
 375                 String svgNS = "http://www.w3.org/2000/svg";
 376                 Document document = domImpl.createDocument(svgNS, "svg", null);
 377
 378                 SVGGeneratorContext ctx = SVGGeneratorContext.createDefault(document);
 379                 ctx.setComment(null);
 380
 381                 // Create an instance of the SVG Generator.
 382                 SVGGraphics2D svgGenerator = new Generator(ctx, false);
 383
 384                 try {
 385
 386                         svgGenerator.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
 387                         svgGenerator.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
 388                         svgGenerator.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
 389
 390                         node.render(svgGenerator);
 391
 392                 } catch (Throwable t) {
 393                         LOGGER.error("Problems rendering scene graph to SVG", t);
 394                 }
 395
 396                 return svgGenerator.getRoot();
 397         }
 398
 399         public static String printSVGDocument(Element doce) {
 400
 401                 StringBuilder result = new StringBuilder();
 402
 403                 NodeList nl =  doce.getChildNodes();
 404
 405                 for(int i=0;i<nl.getLength();i++) {
 406
 407                         ByteArrayOutputStream os = new ByteArrayOutputStream();
 408
 409                         try {
 410
 411                                 TransformerFactory tf = TransformerFactory.newInstance();
 412                                 Transformer transformer = tf.newTransformer();
 413                                 transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
 414                                 transformer.setOutputProperty(OutputKeys.STANDALONE, "no");
 415                                 transformer.setOutputProperty(OutputKeys.METHOD, "xml");
 416                                 transformer.setOutputProperty(OutputKeys.INDENT, "yes");
 417                                 transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
 418                                 transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
 419
 420                                 transformer.transform(new DOMSource(nl.item(i)),
 421                                                 new StreamResult(new OutputStreamWriter(os, "UTF-8")));
 422
 423                                 os.flush();
 424                                 os.close();
 425
 426                         } catch (Throwable t) {
 427                                 LOGGER.error("Problems formatting SVGDocument to text.", t);
 428                         }
 429
 430                         result.append(new String(os.toByteArray()));
 431
 432                 }
 433
 434                 return result.toString();
 435
 436         }
 437
 438         public static String renderSVG(ICanvasContext ctx) {
 439
 440                 // Get a DOMImplementation.
 441                 DOMImplementation domImpl = GenericDOMImplementation.getDOMImplementation();
 442
 443                 // Create an instance of org.w3c.dom.Document.
 444                 String svgNS = "http://www.w3.org/2000/svg";
 445                 Document document = domImpl.createDocument(svgNS, "svg", null);
 446
 447                 // Create an instance of the SVG Generator.
 448                 SVGGraphics2D svgGenerator = new Generator(document);
 449
 450                 StringBuilder result = new StringBuilder();
 451
 452                 try {
 453
 454             Selection selection = ctx.getAtMostOneItemOfClass(Selection.class);
 455             if (selection != null) {
 456                 // This prevents workbench selection from being left over.
 457                 // Also prevents scene graph crap from being left on the screen.
 458                 IDiagram d = ctx.getDefaultHintContext().getHint(DiagramHints.KEY_DIAGRAM);
 459                 selection.setSelection(0, d.getElements());
 460             }
 461
 462                         G2DSceneGraph sg = ctx.getSceneGraph();
 463                         G2DParentNode root = (G2DParentNode) sg.getRootNode();
 464
 465                         // rtree is the actual content of the diagram
 466                         RTreeNode rtree = NodeUtil.getNearestChildByClass(root, RTreeNode.class);
 467                         Rectangle2D rtreeBounds = NodeUtil.getLocalBounds(rtree);
 468
 469                         // nav is a node that has zooming functionalities
 470                         NavigationNode nav = NodeUtil.getNearestChildByClass(root, NavigationNode.class);
 471                         nav.setZoomEnabled(true);
 472
 473                         // fit view with the contents of rtreeBounds
 474                         nav.zoomTo(rtreeBounds);
 475
 476                         // get the bounds of the content
 477                         Rectangle2D content = NodeUtil.getLocalBounds(nav);
 478
 479                         svgGenerator.scale(3,3);
 480
 481                         // translate svgGenerator to the x and y coordinates of current content
 482                         svgGenerator.translate(-1 * content.getX(), (-1 * content.getY()));
 483
 484                         Rectangle2D destination = new Rectangle2D.Double(0,0,1000,1000);
 485                         double sx = destination.getWidth() / content.getWidth();
 486                         double sy = destination.getHeight() / content.getHeight();
 487                         double scale = sx < sy ? sx : sy;
 488
 489                         // Set svgCanvasSize to the given size parameters
 490                         svgGenerator.setSVGCanvasSize(new Dimension((int)(scale * content.getWidth()), (int)(scale * content.getHeight())));
 491                         svgGenerator.setClip(content);
 492
 493                         double trX = -1 * content.getX();
 494                         double trY = -1 * content.getY();
 495
 496                         result.append("<svg width=\"100%\" height=\"100%\" stroke=\"black\"><g transform=\"translate(").append(trX).append(' ').append(trY).append(")\">");
 497
 498                         IG2DNodeVisitor visitor = new IG2DNodeVisitor() {
 499
 500                                 int indent = 0;
 501
 502                                 HashMap<SingleElementNode,StringBuilder> senBuilders = new HashMap<>();
 503
 504                                 @Override
 505                                 public void enter(IG2DNode node) {
 506
 507                                         StringBuilder parentBuilder = getParentBuilder(node);
 508
 509                                         indent++;
 510                                         if(node instanceof ConnectionNode) {
 511
 512                                                 for(RouteGraphNode n : NodeUtil.collectNodes(node, RouteGraphNode.class)) {
 513                                                         n.setIgnoreSelection(true);
 514                                                 }
 515
 516                                                 String key = ((ConnectionNode)node).getKey().toString();
 517
 518                                                 parentBuilder.append("\n<g class=\"connection\" id=\"" + key + "\">");
 519                                                 Element doc = renderSVGNode((IG2DNode)node);
 520                                                 String svg = printSVGDocument(doc);
 521                                                 parentBuilder.append(svg);
 522
 523                                                 for(RouteGraphNode n : NodeUtil.collectNodes(node, RouteGraphNode.class)) {
 524                                                         n.setIgnoreSelection(false);
 525                                                 }
 526
 527                                                 parentBuilder.append("\n<g style=\"visibility:hidden\" class=\"selection\" id=\"" + key + "\">");
 528                                                 doc = renderSVGNode((IG2DNode)node);
 529                                                 svg = printSVGDocument(doc);
 530                                                 parentBuilder.append(svg);
 531                                                 parentBuilder.append("\n</g>");
 532
 533                                                 BasicStroke bs = new BasicStroke(5f);
 534
 535                                                 for(RouteGraphNode n : NodeUtil.collectNodes(node, RouteGraphNode.class)) {
 536                                                         n.setDynamicStroke(bs);
 537                                                 }
 538
 539                                                 parentBuilder.append("\n<g class=\"selectionMask\" opacity=\"0.001\" id=\"" + key + "\">");
 540                                                 doc = renderSVGNode((IG2DNode)node);
 541                                                 svg = printSVGDocument(doc);
 542                                                 parentBuilder.append(svg);
 543                                                 parentBuilder.append("\n</g>");
 544
 545                                                 parentBuilder.append("\n</g>");
 546
 547                                         } else if (node instanceof SelectionNode) {
 548
 549                                                 SelectionNode n = (SelectionNode)node;
 550                                                 SingleElementNode parentSEN = (SingleElementNode)NodeUtil.getNearestParentOfType(node, SingleElementNode.class);
 551                                                 if(parentSEN != null && parentSEN.getKey() != null) {
 552
 553                                                         StringBuilder parentBuilder2 = getParentBuilder(parentSEN);
 554
 555                                                         String key = parentSEN.getKey().toString();
 556                                                         Element doc = renderSVGNode((IG2DNode)node);
 557                                                         String svg = printSVGDocument(doc);
 558                                                         parentBuilder2.append("\n<g style=\"visibility:hidden\" class=\"selection\" id=\"" + key + "\">");
 559                                                         parentBuilder2.append(svg);
 560                                                         parentBuilder2.append("\n</g>");
 561                                                         parentBuilder2.append("\n<g class=\"selectionMask\" id=\"" + key + "\">");
 562                                                         Rectangle2D rect = n.getRect();
 563                                                         parentBuilder2.append("<rect style=\"fill:#fff\" opacity=\"0.001\"");
 564                                                         parentBuilder2.append(" x=\"" + rect.getX() + "\" y=\"" + rect.getY() + "\"");
 565                                                         parentBuilder2.append(" width=\"" + rect.getWidth() + "\" height=\"" + rect.getHeight() + "\"");
 566                                                         parentBuilder2.append("></rect>");
 567                                                         parentBuilder2.append("\n</g>");
 568                                                 }
 569                                         } else if (node instanceof SVGNode) {
 570                                                 SVGNode svg = (SVGNode)node;
 571                                                 parentBuilder.append(svg.getSVGText());
 572                                         } else if (node instanceof G2DParentNode) {
 573                                                 AffineTransform at = node.getTransform();
 574                                                 if(node instanceof SingleElementNode) {
 575                                                         SingleElementNode sen = (SingleElementNode)node;
 576                                                         if(sen.getKey() != null) {
 577                                                                 String key = sen.getKey().toString();
 578                                                                 parentBuilder.append("\n<g class=\"definedElement\" id=\"" + key + "\">");
 579                                                         }
 580                                                         senBuilders.put(sen, new StringBuilder());
 581                                                 }
 582                                                 if(!at.isIdentity()) {
 583                                                         if(at.getScaleX() == 1.0 && at.getScaleY() == 1.0 && at.getShearX() == 0.0 && at.getShearY() == 0.0) {
 584                                                                 String m = "translate(" + at.getTranslateX() + " " + at.getTranslateY() + ")";
 585                                                                 parentBuilder.append("\n<g transform=\"" + m + "\">");
 586                                                         } else {
 587                                                                 double[] ds = new double[6];
 588                                                                 at.getMatrix(ds);
 589                                                                 String m = "matrix(" + ds[0] + " " + ds[1] + " " + ds[2] + " " + ds[3] + " " + ds[4] + " " + ds[5] + ")";
 590                                                                 parentBuilder.append("\n<g transform=\"" + m + "\">");
 591                                                         }
 592                                                 }
 593                                         }
 594
 595                                         //enters.put(node, b.length());
 596
 597                                 }
 598
 599                                 private StringBuilder getParentBuilder(IG2DNode node) {
 600
 601                                         INode parentSEN = NodeUtil.getNearestParentOfType(node, SingleElementNode.class);
 602                                         if(parentSEN instanceof G2DSceneGraph) return result;
 603
 604                                         StringBuilder parentBuilder = senBuilders.get(parentSEN);
 605                                         if(parentBuilder == null) return result;
 606
 607                                         return parentBuilder;
 608
 609                                 }
 610
 611                                 @Override
 612                                 public void leave(IG2DNode node) {
 613
 614                                         if(node instanceof ConnectionNode || node instanceof SVGNode) {
 615                                                 // We are done
 616                                         } else if (node instanceof G2DParentNode) {
 617
 618                                                 StringBuilder parentBuilder = getParentBuilder(node);
 619
 620                                                 if(node instanceof SingleElementNode) {
 621                                                         SingleElementNode sen = (SingleElementNode)node;
 622 //                                                      if(sen.getKey() != null) {
 623                                                                 StringBuilder b = senBuilders.get(sen);
 624                                                                 String content = b.toString();
 625                                                                 if(content.isEmpty()) {
 626                                                                         if(sen.getKey() != null) {
 627
 628                                                                                 for(SelectionNode n : NodeUtil.collectNodes(node, SelectionNode.class)) {
 629                                                                                         n.setIgnore(true);
 630                                                                                 }
 631
 632                                                                                 Element doc = renderSVGNode((IG2DNode)node);
 633                                                                                 String svg = printSVGDocument(doc);
 634                                                                                 parentBuilder.append(svg);
 635                                                                         }
 636                                                                 } else {
 637                                                                         parentBuilder.append(content);
 638                                                                 }
 639 //                                                      }
 640                                                 }
 641
 642
 643                                                 AffineTransform at = node.getTransform();
 644                                                 if(!at.isIdentity()) {
 645                                                         parentBuilder.append("</g>");
 646                                                 }
 647                                                 if(node instanceof SingleElementNode) {
 648                                                         SingleElementNode sen = (SingleElementNode)node;
 649                                                         if(sen.getKey() != null) {
 650                                                                 parentBuilder.append("</g>");
 651                                                         }
 652                                                 }
 653                                         }
 654                                         indent --;
 655                                 }
 656
 657                         };
 658                         sg.accept(visitor);
 659
 660                 } catch (Throwable t) {
 661                         LOGGER.error("Problems rendering canvas context to SVG", t);
 662                 }
 663
 664                 result.append("</g></svg>");
 665                 //System.err.println(" == FINAL RESULT == ");
 666                 //System.err.println(b);
 667                 return result.toString();
 668
 669         }
 670
 671
 672 }