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

Example 1 with DiagramNode

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

the class ProcessDiagramLayoutFactory method parseBounds.

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;
}

Example 2 with DiagramNode

use of org.activiti.engine.repository.DiagramNode 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);
}

Example 3 with DiagramNode

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

the class ProcessDiagramLayoutFactory method transformBoundsForImage.

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;
}

Example 4 with DiagramNode

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

the class ProcessDiagramLayoutFactory method getDiagramBoundsFromImage.

protected DiagramNode getDiagramBoundsFromImage(InputStream imageStream, int offsetTop, int offsetBottom) {
    BufferedImage image;
    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;
}

Example 5 with DiagramNode

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

the class ProcessDiagramLayoutFactory method getDiagramBoundsFromBpmnDi.

protected DiagramNode getDiagramBoundsFromBpmnDi(Document bpmnModel) {
    Double minX = null;
    Double minY = null;
    Double maxX = null;
    Double maxY = null;
    // Node positions and dimensions
    NodeList setOfBounds = bpmnModel.getElementsByTagNameNS(BpmnParser.BPMN_DC_NS, "Bounds");
    for (int i = 0; i < setOfBounds.getLength(); i++) {
        Element element = (Element) setOfBounds.item(i);
        Double x = Double.valueOf(element.getAttribute("x"));
        Double y = Double.valueOf(element.getAttribute("y"));
        Double width = Double.valueOf(element.getAttribute("width"));
        Double height = Double.valueOf(element.getAttribute("height"));
        if (x == 0.0 && y == 0.0 && width == 0.0 && height == 0.0) {
        // Ignore empty labels like the ones produced by Yaoqiang:
        // <bpmndi:BPMNLabel><dc:Bounds height="0.0" width="0.0" x="0.0" y="0.0"/></bpmndi:BPMNLabel>
        } else {
            if (minX == null || x < minX) {
                minX = x;
            }
            if (minY == null || y < minY) {
                minY = y;
            }
            if (maxX == null || maxX < (x + width)) {
                maxX = (x + width);
            }
            if (maxY == null || maxY < (y + height)) {
                maxY = (y + height);
            }
        }
    }
    // Edge bend points
    NodeList waypoints = bpmnModel.getElementsByTagNameNS(BpmnParser.OMG_DI_NS, "waypoint");
    for (int i = 0; i < waypoints.getLength(); i++) {
        Element waypoint = (Element) waypoints.item(i);
        Double x = Double.valueOf(waypoint.getAttribute("x"));
        Double y = Double.valueOf(waypoint.getAttribute("y"));
        if (minX == null || x < minX) {
            minX = x;
        }
        if (minY == null || y < minY) {
            minY = y;
        }
        if (maxX == null || maxX < x) {
            maxX = x;
        }
        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;
}