Mercurial > projects > dwt2
diff org.eclipse.draw2d/src/org/eclipse/draw2d/BendpointConnectionRouter.d @ 12:bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 14 Mar 2009 18:23:29 +0100 |
parents | |
children | dbfb303e8fb0 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/org.eclipse.draw2d/src/org/eclipse/draw2d/BendpointConnectionRouter.d Sat Mar 14 18:23:29 2009 +0100 @@ -0,0 +1,119 @@ +/******************************************************************************* + * Copyright (c) 2000, 2005 IBM Corporation and others. + * All rights reserved. This program and the accompanying materials + * are 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: + * IBM Corporation - initial API and implementation + * Port to the D programming language: + * Frank Benoit <benoit@tionex.de> + *******************************************************************************/ +module org.eclipse.draw2d.BendpointConnectionRouter; + +import java.lang.all; + +import org.eclipse.draw2d.geometry.Point; +import org.eclipse.draw2d.geometry.PointList; +import org.eclipse.draw2d.geometry.PrecisionPoint; +import org.eclipse.draw2d.AbstractRouter; +import org.eclipse.draw2d.Connection; +import org.eclipse.draw2d.Bendpoint; + +/** + * Routes {@link Connection}s through a <code>List</code> of {@link Bendpoint Bendpoints}. + */ +public class BendpointConnectionRouter + : AbstractRouter +{ + +private Map constraints; + +private static PrecisionPoint A_POINT_; +private static PrecisionPoint A_POINT(){ + if( A_POINT_ is null ){ + synchronized( BendpointConnectionRouter.classinfo ){ + if( A_POINT_ is null ){ + A_POINT_ = new PrecisionPoint(); + } + } + } + return A_POINT_; +} + +public this(){ + constraints = new HashMap(11); +} + +/** + * Gets the constraint for the given {@link Connection}. + * + * @param connection The connection whose constraint we are retrieving + * @return The constraint + */ +public Object getConstraint(Connection connection) { + return constraints.get(cast(Object)connection); +} + +/** + * Removes the given connection from the map of constraints. + * + * @param connection The connection to remove + */ +public void remove(Connection connection) { + constraints.remove(cast(Object)connection); +} + +/** + * Routes the {@link Connection}. Expects the constraint to be a List + * of {@link org.eclipse.draw2d.Bendpoint Bendpoints}. + * + * @param conn The connection to route + */ +public void route(Connection conn) { + PointList points = conn.getPoints(); + points.removeAllPoints(); + + List bendpoints = cast(List)getConstraint(conn); + if (bendpoints is null) + bendpoints = Collections.EMPTY_LIST; + + Point ref1, ref2; + + if (bendpoints.isEmpty()) { + ref1 = conn.getTargetAnchor().getReferencePoint(); + ref2 = conn.getSourceAnchor().getReferencePoint(); + } else { + ref1 = new Point((cast(Bendpoint)bendpoints.get(0)).getLocation()); + conn.translateToAbsolute(ref1); + ref2 = new Point((cast(Bendpoint)bendpoints.get(bendpoints.size() - 1)).getLocation()); + conn.translateToAbsolute(ref2); + } + + A_POINT.setLocation(conn.getSourceAnchor().getLocation(ref1)); + conn.translateToRelative(A_POINT); + points.addPoint(A_POINT); + + for (int i = 0; i < bendpoints.size(); i++) { + Bendpoint bp = cast(Bendpoint)bendpoints.get(i); + points.addPoint(bp.getLocation()); + } + + A_POINT.setLocation(conn.getTargetAnchor().getLocation(ref2)); + conn.translateToRelative(A_POINT); + points.addPoint(A_POINT); + conn.setPoints(points); +} + +/** + * Sets the constraint for the given {@link Connection}. + * + * @param connection The connection whose constraint we are setting + * @param constraint The constraint + */ +public void setConstraint(Connection connection, Object constraint) { + constraints.put(cast(Object)connection, constraint); +} + +}