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

Example 6 with DiagramNode

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

the class ProcessDiagramLayoutFactory method getElementBoundsFromBpmnDi.

protected Map<String, DiagramNode> getElementBoundsFromBpmnDi(Document bpmnModel) {
    Map<String, DiagramNode> listOfBounds = new HashMap<String, DiagramNode>();
    // iterate over all DI shapes
    NodeList shapes = bpmnModel.getElementsByTagNameNS(BpmnParser.BPMN_DI_NS, "BPMNShape");
    for (int i = 0; i < shapes.getLength(); i++) {
        Element shape = (Element) shapes.item(i);
        String bpmnElementId = shape.getAttribute("bpmnElement");
        // get bounds of shape
        NodeList childNodes = shape.getChildNodes();
        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;
            }
        }
    }
    return listOfBounds;
}

Example 7 with DiagramNode

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

the class ProcessDiagramLayoutFactory method getDiagramBoundsFromImage.

protected DiagramNode getDiagramBoundsFromImage(BufferedImage image, int offsetTop, int offsetBottom) {
    int width = image.getWidth();
    int height = image.getHeight();
    Map<Integer, Boolean> rowIsWhite = new TreeMap<Integer, Boolean>();
    Map<Integer, Boolean> columnIsWhite = new TreeMap<Integer, Boolean>();
    for (int row = 0; row < height; row++) {
        if (!rowIsWhite.containsKey(row)) {
            rowIsWhite.put(row, true);
        }
        if (row <= offsetTop || row > image.getHeight() - offsetBottom) {
            rowIsWhite.put(row, true);
        } else {
            for (int column = 0; column < width; column++) {
                if (!columnIsWhite.containsKey(column)) {
                    columnIsWhite.put(column, true);
                }
                int pixel = image.getRGB(column, row);
                int alpha = (pixel >> 24) & 0xff;
                int red = (pixel >> 16) & 0xff;
                int green = (pixel >> 8) & 0xff;
                int blue = (pixel >> 0) & 0xff;
                if (!(alpha == 0 || (red >= GREY_THRESHOLD && green >= GREY_THRESHOLD && blue >= GREY_THRESHOLD))) {
                    rowIsWhite.put(row, false);
                    columnIsWhite.put(column, false);
                }
            }
        }
    }
    int marginTop = 0;
    for (int row = 0; row < height; row++) {
        if (rowIsWhite.get(row)) {
            ++marginTop;
        } else {
            // Margin Top Found
            break;
        }
    }
    int marginLeft = 0;
    for (int column = 0; column < width; column++) {
        if (columnIsWhite.get(column)) {
            ++marginLeft;
        } else {
            // Margin Left Found
            break;
        }
    }
    int marginRight = 0;
    for (int column = width - 1; column >= 0; column--) {
        if (columnIsWhite.get(column)) {
            ++marginRight;
        } else {
            // Margin Right Found
            break;
        }
    }
    int marginBottom = 0;
    for (int row = height - 1; row >= 0; row--) {
        if (rowIsWhite.get(row)) {
            ++marginBottom;
        } else {
            // 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;
}

Example 8 with DiagramNode

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

the class ProcessDiagramLayoutFactory method fixFlowNodePositionsIfModelFromAdonis.

protected Map<String, DiagramNode> fixFlowNodePositionsIfModelFromAdonis(Document bpmnModel, Map<String, DiagramNode> elementBoundsFromBpmnDi) {
    if (isExportedFromAdonis50(bpmnModel)) {
        Map<String, DiagramNode> mapOfFixedBounds = new HashMap<String, DiagramNode>();
        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);
        }
        return mapOfFixedBounds;
    } else {
        return elementBoundsFromBpmnDi;
    }
}