org.netbeans.modeler.anchors.CustomCircularAnchor Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jeddict

Jeddict is an open source Jakarta EE application development platform that accelerates developers productivity and simplifies development tasks of creating complex entity relationship models.

There is a newer version: 6.3.1

Show newest version

/**
 * Copyright 2013-2022 Gaurav Gupta
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package org.netbeans.modeler.anchors;

import java.awt.Point;
import org.netbeans.api.visual.anchor.Anchor;
import org.netbeans.api.visual.widget.Widget;
import org.netbeans.modeler.specification.model.document.IModelerScene;
import org.netbeans.modeler.specification.model.document.widget.IFlowEdgeWidget;
import org.netbeans.modeler.widget.node.INodeWidget;
import org.netbeans.modeler.widget.node.NodeWidget;

public final class CustomCircularAnchor extends Anchor {

    private String type = "NONE";
    private final IModelerScene modelerScene;
    private final INodeWidget nodeWidget;

    public CustomCircularAnchor(INodeWidget nodeWidget) {
        super(((NodeWidget) nodeWidget).getNodeImageWidget());
        this.nodeWidget = nodeWidget;
        this.modelerScene = nodeWidget.getModelerScene();
    }

    @Override
    public Result compute(Entry entry) {
        Point relatedLocation = getRelatedSceneLocation();
        Point oppositeLocation;

        java.util.List points = entry.getAttachedConnectionWidget().getControlPoints();

        if (entry.getAttachedConnectionWidget() instanceof IFlowEdgeWidget) {
            IFlowEdgeWidget flowEdgeWidget = (IFlowEdgeWidget) entry.getAttachedConnectionWidget();
            INodeWidget sourceNodeWidget = (INodeWidget) flowEdgeWidget.getSourceWidget();
            INodeWidget targetNodeWidget = (INodeWidget) flowEdgeWidget.getTargetWidget();
            if (!sourceNodeWidget.isAnchorEnable() && !targetNodeWidget.isAnchorEnable() && !points.isEmpty()) {        //if edge both nodes anchor not enabled (if any one is allowed then calculated[means this if condition failed])
                if (entry.isAttachedToConnectionSource()) {
                    return new Anchor.Result(points.get(0), Anchor.DIRECTION_ANY); //return current
                } else {
                    return new Anchor.Result(points.get(points.size() - 1), Anchor.DIRECTION_ANY); //return current
                }
            }
        }

        if (points.size() > 2) {
            if (entry.isAttachedToConnectionSource()) {
                oppositeLocation = points.get(1);
                type = "SOURCE";
            } else {
                oppositeLocation = points.get(points.size() - 2);
                type = "TARGET";
            }
        } else {
            oppositeLocation = getOppositeSceneLocation(entry);
            type = "NONE";
        }

        return computeBoundaryIntersectionPoint((int) nodeWidget.getBounds().getWidth() / 2, relatedLocation, oppositeLocation);
    }

    private Result computeBoundaryIntersectionPoint(int radius, Point relatedLocation, Point oppositeLocation) { //Source Center , Target Center
        double angle = Math.atan2(oppositeLocation.y - relatedLocation.y, oppositeLocation.x - relatedLocation.x);
        Point location = new Point(relatedLocation.x + (int) (radius * Math.cos(angle)), relatedLocation.y + (int) (radius * Math.sin(angle)));
        type = "NONE";
        return new Anchor.Result(location, Anchor.DIRECTION_ANY); // TODO - resolve direction
    }

}