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/*******************************************************************************
* Copyright (c) 2011, 2012, 2013, 2014 Red Hat, Inc.
* All rights reserved.
* This program is made available under the terms of the
* Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Red Hat, Inc. - initial API and implementation
*
* @author Bob Brodt
******************************************************************************/
package org.eclipse.bpmn2.modeler.core.utils;
import org.eclipse.bpmn2.modeler.core.features.GraphitiConstants;
import org.eclipse.bpmn2.modeler.core.utils.GraphicsUtil.LineSegment;
import org.eclipse.graphiti.datatypes.ILocation;
import org.eclipse.graphiti.mm.algorithms.styles.Point;
import org.eclipse.graphiti.mm.pictograms.FixPointAnchor;
import org.eclipse.graphiti.mm.pictograms.Shape;
import org.eclipse.graphiti.services.Graphiti;
public enum AnchorSite {
/** These ordinals MUST have the same meanings as {@see GraphicsUtil#getEdges(Shape)} */
TOP("anchor.top"), BOTTOM("anchor.bottom"), LEFT("anchor.left"), RIGHT("anchor.right"), CENTER("anchor.center"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$
private final String key;
private AnchorSite(String key) {
this.key = key;
}
public String getKey() {
return key;
}
public static AnchorSite getSite(String key) {
for (AnchorSite l : values()) {
if (l.getKey().equals(key)) {
return l;
}
}
return CENTER;
// throw new IllegalArgumentException("Cannot determine Anchor Site "+key);
}
public static AnchorSite getSite(FixPointAnchor anchor) {
return getSite(Graphiti.getPeService().getPropertyValue(anchor, GraphitiConstants.ANCHOR_LOCATION));
}
public static void setSite(FixPointAnchor anchor, AnchorSite site) {
Graphiti.getPeService().setPropertyValue(anchor, GraphitiConstants.ANCHOR_LOCATION, site.getKey());
}
/**
* Return the AnchorSide value of the shape's edge that is nearest
* to the given point.
*
* @param shape
* @param p
* @return
*/
public static AnchorSite getNearestEdge(Shape shape, Point p) {
LineSegment edge = GraphicsUtil.findNearestEdge(shape, p);
ILocation loc = Graphiti.getPeService().getLocationRelativeToDiagram(shape);
AnchorSite site;
if (edge.isHorizontal()) {
int y = edge.getStart().getY();
if (y==loc.getY())
site = TOP;
else
site = BOTTOM;
}
else {
int x = edge.getStart().getX();
if (x==loc.getX())
site = LEFT;
else
site = RIGHT;
}
return site;
}
/**
* Return the AnchorSide value of the shape's edge that is nearest
* to the given point.
*
* @param shape
* @param p
* @return
*/
public static AnchorSite getNearestEdge(Shape shape, Point p1, Point p2) {
LineSegment edge = GraphicsUtil.findNearestEdge(shape, p1, p2);
ILocation loc = Graphiti.getPeService().getLocationRelativeToDiagram(shape);
AnchorSite site;
if (edge.isHorizontal()) {
int y = edge.getStart().getY();
if (y==loc.getY())
site = TOP;
else
site = BOTTOM;
}
else {
int x = edge.getStart().getX();
if (x==loc.getX())
site = LEFT;
else
site = RIGHT;
}
return site;
}
}
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