diff dwtx/draw2d/ConnectionAnchor.d @ 98:95307ad235d9

Added Draw2d code, still work in progress
author Frank Benoit <benoit@tionex.de>
date Sun, 03 Aug 2008 00:52:14 +0200
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/draw2d/ConnectionAnchor.d	Sun Aug 03 00:52:14 2008 +0200
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+/*******************************************************************************
+ * 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 dwtx.draw2d.ConnectionAnchor;
+
+import dwt.dwthelper.utils;
+
+import dwtx.draw2d.geometry.Point;
+import dwtx.draw2d.AnchorListener;
+import dwtx.draw2d.IFigure;
+
+/**
+ * An object to which a {@link Connection} will be anchored.  If the ConnectionAnchor
+ * moves, the Connection should move with it.
+ */
+public interface ConnectionAnchor {
+
+/**
+ * Adds a listener interested in the movement of this ConnectionAnchor.
+ * @param listener The AnchorListener to be added
+ */
+void addAnchorListener(AnchorListener listener);
+
+/**
+ * Returns the location where the Connection should be anchored in absolute coordinates.
+ * The anchor may use the given reference Point to calculate this location.
+ * @param reference The reference Point in absolute coordinates
+ * @return The anchor's location
+ */
+Point getLocation(Point reference);
+
+/**
+ * Returns the IFigure that contains this ConnectionAnchor.  Moving this figure will cause
+ * the anchor to move with it.
+ * @return The IFigure that contains this ConnectionAnchor
+ */
+IFigure getOwner();
+
+/**
+ * Returns the reference point for this anchor in absolute coordinates. This might be used
+ * by another anchor to determine its own location (i.e. {@link ChopboxAnchor}).
+ * @return The reference Point
+ */
+Point getReferencePoint();
+
+/**
+ * Removes the listener.
+ * @param listener The AnchorListener to be removed
+ */
+void removeAnchorListener(AnchorListener listener);
+
+}