Example usage for org.apache.poi.xdgf.usermodel.shape.exceptions StopVisiting StopVisiting

Introduction

In this page you can find the example usage for org.apache.poi.xdgf.usermodel.shape.exceptions StopVisiting StopVisiting.

Prototype

StopVisiting

Source Link

Usage

From source file:com.bbn.poi.xdgf.parsers.VisioPageParser.java

License:Apache License

protected void removeBoringShapes() {

    // remove the boring shapes -- we only kept them so far because one of the 
    // reasons a shape could be interesting is if there was a connection to it

    // if there isn't, get rid of it so we don't have extra stuff in the output

    for (final ShapeData shapeData : shapes) {

        if (shapeData.removed)
            continue;

        if (!shapeData.isInteresting && shapeData.vertex.getProperty("type").equals("Group")) {

            final List<ShapeData> children = new ArrayList<>();

            // if not interesting -- but, all of the children are either groups or shapes..
            // .. remove the kids?
            try {
                shapeData.shape.visitShapes(new ShapeVisitor() {

                    @Override/* w  w w. j  a va 2  s  . com*/
                    public void visit(XDGFShape shape, AffineTransform globalTransform, int level) {

                        if (shape.getID() == shapeData.shapeId)
                            return;

                        ShapeData child = getShape(shape.getID());
                        if (child != null) {
                            if (child.hasText || !child.shape.getSymbolName().isEmpty())
                                throw new StopVisiting();

                            children.add(child);
                        }
                    }
                }, 0);
            } catch (StopVisiting e) {
                children.clear();
            }

            // if deemed interesting, remove kids and mark self as interesting
            if (!children.isEmpty()) {
                shapeData.isInteresting = true;
                for (ShapeData child : children) {

                    // if child has connections, move them over to the new interesting shape
                    for (Edge edge : child.vertex.getEdges(Direction.BOTH)) {
                        ShapeData other = getShapeFromEdge(edge, Direction.IN);
                        if (other == child)
                            other = getShapeFromEdge(edge, Direction.OUT);

                        Double x = edge.getProperty("x");
                        Double y = edge.getProperty("y");

                        createEdge(shapeData, other, "real-moved", x, y);
                        edge.remove();
                    }

                    removeShape(child);
                }
            }
        }

        // if it's interesting -- or if it has a connection, then keep it
        if (shapeData.isInteresting || shapeData.vertex.getEdges(Direction.BOTH).iterator().hasNext()) {

            // add to the tree
            // - RTree only deals with bounding rectangles, so we need
            //   to get the bounding rectangle in local coordinates, put
            //   into a polygon (to allow accounting for rotation), and
            //   then get the minimum bounding rectangle.

            // TODO: is it worth setting up a custom geometry?
            // -> problem with a custom geometry is that calculating the
            //    distance between objects would be annoying
            rtree = rtree.add(shapeData, shapeData.rtreeBounds);

        } else {
            removeShape(shapeData);
        }
    }

    cleanShapes();
}