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/*
* $Id: NeonBorderEffect.java 3829 2010-10-07 02:01:20Z kschaefe $
*
* Copyright 2006 Sun Microsystems, Inc., 4150 Network Circle,
* Santa Clara, California 95054, U.S.A. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.jdesktop.swingx.painter.effects;
import java.awt.AlphaComposite;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.Shape;
/**
* An effect which draws a multicolored border around a painter's shape.
* It will interpolate between two specified colors, creating a neon like effect.
* @author joshy
*/
public class NeonBorderEffect extends AbstractAreaEffect {
private Color edgeColor;
private Color centerColor;
private BorderPosition borderPosition = BorderPosition.Outside;
/**
* An enum representing the position of the border: inside, outside, or centered on the border.
*/
public enum BorderPosition { Inside, Centered, Outside }
/**
* Create a new NeonBorderEffect
*/
public NeonBorderEffect() {
this(Color.GREEN, Color.WHITE, 10);
}
/** Creates a new instance of NeonBorderEffect */
public NeonBorderEffect(Color edgeColor, Color centerColor, int effectWidth) {
super();
setEffectWidth(effectWidth);
this.setEdgeColor(edgeColor);
this.setCenterColor(centerColor);
this.setRenderInsideShape(false);
this.setShouldFillShape(false);
this.setOffset(new Point(0,0));
}
@Override
protected void paintBorderGlow(Graphics2D gfx, Shape clipShape, int width, int height) {
/*
// draw the effect
for(float i=steps-1; i>=0; i=i-1f) {
float brushWidth = i * getEffectWidth()/steps;
gfx.setPaint(interpolateColor(i/steps,edgeColor,centerColor));
gfx.setStroke(new BasicStroke(brushWidth,
BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND));
gfx.draw(clipShape);
}*/
/* // an interesting outline effect. stroke the shape with a wide brush
* // then stroke again with slightly less wide one, then don't fill the middle
for(int i=0; i<2; i++) {
float brushWidth = (2-i)*5;
p("widdth = " + brushWidth);
gfx.setPaint(interpolateColor((float)(1-i), Color.BLACK, Color.WHITE));
gfx.setStroke(new BasicStroke(brushWidth));
gfx.draw(clipShape);
}
*/
gfx.translate(getOffset().getX(), getOffset().getY());
gfx.setComposite(AlphaComposite.SrcOver);
int steps = getEffectWidth();
if(borderPosition == BorderPosition.Centered) {
steps = steps/2;
}
for(int i=0; i