Examples with DiagramLayout org.activiti.engine.repository.DiagramLayout used on opensource projects

Example 1 with DiagramLayout

use of org.activiti.engine.repository.DiagramLayout in project Activiti by Activiti.

the class ProcessDiagramLayoutFactory method getBpmnProcessDiagramLayout.

/**
   * Provides positions and dimensions of elements in a BPMN process diagram as
   * provided by {@link RepositoryService#getProcessDiagram(String)}.
   *
   * @param bpmnXmlStream
   *          BPMN 2.0 XML document
   * @param imageStream
   *          BPMN 2.0 diagram in PNG format (JPEG and other formats supported
   *          by {@link ImageIO} may also work)
   * @return Layout of the process diagram
   * @return null when parameter imageStream is null
   */
public DiagramLayout getBpmnProcessDiagramLayout(Document bpmnModel, InputStream imageStream) {
    if (imageStream == null) {
        return null;
    }
    DiagramNode diagramBoundsXml = getDiagramBoundsFromBpmnDi(bpmnModel);
    DiagramNode diagramBoundsImage;
    if (isExportedFromAdonis50(bpmnModel)) {
        // Adonis header
        int offsetTop = 29;
        // Adonis footer
        int offsetBottom = 61;
        diagramBoundsImage = getDiagramBoundsFromImage(imageStream, offsetTop, offsetBottom);
    } else {
        diagramBoundsImage = getDiagramBoundsFromImage(imageStream);
    }
    Map<String, DiagramNode> listOfBounds = new HashMap<String, DiagramNode>();
    listOfBounds.put(diagramBoundsXml.getId(), diagramBoundsXml);
    //    listOfBounds.putAll(getElementBoundsFromBpmnDi(bpmnModel));
    listOfBounds.putAll(fixFlowNodePositionsIfModelFromAdonis(bpmnModel, getElementBoundsFromBpmnDi(bpmnModel)));
    Map<String, DiagramElement> listOfBoundsForImage = transformBoundsForImage(diagramBoundsImage, diagramBoundsXml, listOfBounds);
    return new DiagramLayout(listOfBoundsForImage);
}