/*FreeMind - A Program for creating and viewing Mindmaps
*Copyright (C) 2000-2001 Joerg Mueller <joergmueller@bigfoot.com>
*See COPYING for Details
*
*This program is free software; you can redistribute it and/or
*modify it under the terms of the GNU General Public License
*as published by the Free Software Foundation; either version 2
*of the License, or (at your option) any later version.
*
*This program is distributed in the hope that it will be useful,
*but WITHOUT ANY WARRANTY; without even the implied warranty of
*MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
*GNU General Public License for more details.
*
*You should have received a copy of the GNU General Public License
*along with this program; if not, write to the Free Software
*Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*$Id: MindMapArrowLinkModel.java,v 1.5.18.4.12.1 2007/04/21 15:11:21 dpolivaev Exp $*/
package freemind.modes.mindmapmode;
import java.awt.Point;
import freemind.main.FreeMindMain;
import freemind.modes.ArrowLinkAdapter;
import freemind.modes.MindMapNode;
import freemind.view.mindmapview.MapView;
import freemind.view.mindmapview.NodeView;
public class MindMapArrowLinkModel extends ArrowLinkAdapter {
public MindMapArrowLinkModel(MindMapNode source, MindMapNode target,
FreeMindMain frame) {
super(source, target, frame);
}
/* maybe this method is wrong here, but ... */
public Object clone() {
return super.clone();
}
public String toString() {
return "Source=" + getSource() + ", target=" + getTarget() + ", "
+ save().toString();
}
/*
* (non-Javadoc)
*
* @see freemind.modes.MindMapArrowLink#changeInclination(int, int, int,
* int)
*/
public void changeInclination(MapView map, int originX, int originY,
int deltaX, int deltaY) {
double distSqToTarget = 0;
double distSqToSource = 0;
NodeView targetView = map.getNodeView(getTarget());
NodeView sourceView = map.getNodeView(getSource());
if (targetView != null && sourceView != null) {
Point targetLinkPoint = targetView
.getLinkPoint(getEndInclination());
Point sourceLinkPoint = sourceView
.getLinkPoint(getStartInclination());
distSqToTarget = targetLinkPoint.distanceSq(originX, originY);
distSqToSource = sourceLinkPoint.distanceSq(originX, originY);
}
if ((targetView == null || sourceView != null)
&& distSqToSource < distSqToTarget * 2.25) {
Point changedInclination = getStartInclination();
changeInclination(deltaX, deltaY, sourceView, changedInclination);
setStartInclination(changedInclination);
}
if ((sourceView == null || targetView != null)
&& distSqToTarget < distSqToSource * 2.25) {
Point changedInclination = getEndInclination();
changeInclination(deltaX, deltaY, targetView, changedInclination);
setEndInclination(changedInclination);
}
}
private void changeInclination(int deltaX, int deltaY,
NodeView linkedNodeView, Point changedInclination) {
if (linkedNodeView.isLeft()) {
deltaX = -deltaX;
}
changedInclination.translate(deltaX, deltaY);
if (changedInclination.x != 0
&& Math.abs((double) changedInclination.y
/ changedInclination.x) < 0.015) {
changedInclination.y = 0;
}
double k = changedInclination.distance(0, 0);
if (k < 10) {
if (k > 0) {
changedInclination.x = (int) (changedInclination.x * 10 / k);
changedInclination.y = (int) (changedInclination.y * 10 / k);
} else {
changedInclination.x = 10;
}
}
}
}