Examples of org.activiti.engine.repository.DiagramNode

org.activiti.engine.repository.DiagramNode
Stores position and dimensions of a diagram node. @author Falko Menge

   */
  public DiagramLayout getBpmnProcessDiagramLayout(Document bpmnModel, InputStream imageStream) {
    if (imageStream == null) {
      return null;
    }
    DiagramNode diagramBoundsXml = getDiagramBoundsFromBpmnDi(bpmnModel);
    DiagramNode diagramBoundsImage;
    if (isExportedFromAdonis50(bpmnModel)) {
      int offsetTop = 29; // Adonis header
      int offsetBottom = 61; // Adonis footer
      diagramBoundsImage = getDiagramBoundsFromImage(imageStream, offsetTop, offsetBottom);
    } else {

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      if (maxY == null || maxY < y) {
        maxY = y;
      }
    }
  
    DiagramNode diagramBounds = new DiagramNode("BPMNDiagram");
    diagramBounds.setX(minX);
    diagramBounds.setY(minY);
    diagramBounds.setWidth(maxX - minX);
    diagramBounds.setHeight(maxY - minY);
    return diagramBounds;
  }

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    try {
      image = ImageIO.read(imageStream);
    } catch (IOException e) {
      throw new ActivitiException("Error while reading process diagram image.", e);
    }
    DiagramNode diagramBoundsImage = getDiagramBoundsFromImage(image, offsetTop, offsetBottom);
    return diagramBoundsImage;
  }

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        // Margin Bottom Found
        break;
      }
    }
    
    DiagramNode diagramBoundsImage = new DiagramNode();
    diagramBoundsImage.setX((double) marginLeft);
    diagramBoundsImage.setY((double) marginTop);
    diagramBoundsImage.setWidth((double) (width - marginRight - marginLeft));
    diagramBoundsImage.setHeight((double) (height - marginBottom - marginTop));
    return diagramBoundsImage;
  }

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      for (int j = 0; j < childNodes.getLength(); j++) {
        Node childNode = childNodes.item(j);
        if (childNode instanceof Element
                && BpmnParser.BPMN_DC_NS.equals(childNode.getNamespaceURI())
                && "Bounds".equals(childNode.getLocalName())) {
          DiagramNode bounds = parseBounds((Element) childNode);
          bounds.setId(bpmnElementId);
          listOfBounds.put(bpmnElementId, bounds);
          break;
        }
      }
    }

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    }
    return listOfBounds;
  }


  protected DiagramNode parseBounds(Element boundsElement) {
    DiagramNode bounds = new DiagramNode();
    bounds.setX(Double.valueOf(boundsElement.getAttribute("x")));
    bounds.setY(Double.valueOf(boundsElement.getAttribute("y")));
    bounds.setWidth(Double.valueOf(boundsElement.getAttribute("width")));
    bounds.setHeight(Double.valueOf(boundsElement.getAttribute("height")));
    return bounds;
  }

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  protected DiagramNode transformBoundsForImage(DiagramNode diagramBoundsImage, DiagramNode diagramBoundsXml, DiagramNode elementBounds) {
    double scalingFactorX = diagramBoundsImage.getWidth() / diagramBoundsXml.getWidth();
    double scalingFactorY = diagramBoundsImage.getWidth() / diagramBoundsXml.getWidth();


    DiagramNode elementBoundsForImage = new DiagramNode(elementBounds.getId());
    elementBoundsForImage.setX((double) Math.round((elementBounds.getX() - diagramBoundsXml.getX()) * scalingFactorX + diagramBoundsImage.getX()));
    elementBoundsForImage.setY((double) Math.round((elementBounds.getY() - diagramBoundsXml.getY()) * scalingFactorY + diagramBoundsImage.getY()));
    elementBoundsForImage.setWidth((double) Math.round(elementBounds.getWidth() * scalingFactorX));
    elementBoundsForImage.setHeight((double) Math.round(elementBounds.getHeight() * scalingFactorY));
    return elementBoundsForImage;
  }

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      XPathFactory xPathFactory = XPathFactory.newInstance();
      XPath xPath = xPathFactory.newXPath();
      xPath.setNamespaceContext(new Bpmn20NamespaceContext());
      for (Entry<String, DiagramNode> entry : elementBoundsFromBpmnDi.entrySet()) {
        String elementId = entry.getKey();
        DiagramNode elementBounds = entry.getValue();
        String expression = "local-name(//bpmn:*[@id = '" + elementId + "'])";
        try {
          XPathExpression xPathExpression = xPath.compile(expression);
          String elementLocalName = xPathExpression.evaluate(bpmnModel);
          if (!"participant".equals(elementLocalName) 
                  && !"lane".equals(elementLocalName)
                  && !"textAnnotation".equals(elementLocalName)
                  && !"group".equals(elementLocalName)) {
            elementBounds.setX(elementBounds.getX() - elementBounds.getWidth()/2);
            elementBounds.setY(elementBounds.getY() - elementBounds.getHeight()/2);
          }
        } catch (XPathExpressionException e) {
          throw new ActivitiException("Error while evaluating the following XPath expression on a BPMN XML document: '" + expression + "'.", e);
        }
        mapOfFixedBounds.put(elementId, elementBounds);

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Related Classes of org.activiti.engine.repository.DiagramNode

org.activiti.engine.impl.bpmn.diagram.ProcessDiagramLayoutFactory

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