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/*
* TouchGraph LLC. Apache-Style Software License
*
*
* Copyright (c) 2001-2002 Alexander Shapiro. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by
* TouchGraph LLC (http://www.touchgraph.com/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "TouchGraph" or "TouchGraph LLC" must not be used to endorse
* or promote products derived from this software without prior written
* permission. For written permission, please contact
* alex@touchgraph.com
*
* 5. Products derived from this software may not be called "TouchGraph",
* nor may "TouchGraph" appear in their name, without prior written
* permission of alex@touchgraph.com.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL TOUCHGRAPH OR ITS CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
*/
package com.touchgraph.graphlayout.interaction;
import com.touchgraph.graphlayout.*;
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
/** DragMultiselectUI contains code for selecting a group on nodes
* by enclosing them in a dotted box.
*
* @author Alexander Shapiro
* @version 1.22-jre1.1 $Id: DragMultiselectUI.java,v 1.1 2002/09/19 15:58:21 ldornbusch Exp $
*/
public class DragMultiselectUI extends TGAbstractDragUI implements TGPaintListener {
TGPoint2D mousePos=null;
TGPoint2D startPos = null;
DragMultiselectUI( TGPanel tgp ) {
super(tgp);
}
public void preActivate() {
startPos = null;
mousePos = null;
tgPanel.addPaintListener(this);
}
public void preDeactivate() {
tgPanel.removePaintListener(this);
tgPanel.repaint();
};
public void mousePressed(MouseEvent e) {
startPos = new TGPoint2D(e.getX(), e.getY());
mousePos = new TGPoint2D(startPos);
}
public void mouseReleased(MouseEvent e) {}
public void mouseDragged(MouseEvent e) {
mousePos.setLocation(e.getX(), e.getY());
tgPanel.multiSelect(startPos,mousePos);
tgPanel.repaint();
}
public void paintFirst(Graphics g) {};
public void paintAfterEdges(Graphics g) {};
public void paintLast(Graphics g) {
if(mousePos==null) return;
g.setColor(Color.black);
int x,y,w,h;
if (startPos.x<mousePos.x) {
x=(int) startPos.x;
w=(int) (mousePos.x-startPos.x);
}
else {
x=(int) mousePos.x;
w=(int) (startPos.x-mousePos.x);
}
if (startPos.y<mousePos.y) {
y=(int) startPos.y;
h=(int) (mousePos.y-startPos.y);
}
else {
y=(int) mousePos.y;
h=(int) (startPos.y-mousePos.y);
}
//God, where are the line styles when you need them
for(int horiz = x;horiz<x+w;horiz+=2){
g.drawLine(horiz,y,horiz,y); //Drawing lines because there is no way
g.drawLine(horiz,y+h,horiz,y+h); //to draw a single pixel.
}
for(int vert = y;vert<y+h;vert+=2){
g.drawLine(x,vert,x,vert);
g.drawLine(x+w,vert,x+w,vert);
}
}
} // end
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