Here you can find the source of mixColor(Paint p, double value)
static private Paint mixColor(Paint p, double value)
//package com.java2s; /*// w w w. j av a 2 s . c o m * #%L * Cytoscape Ding View/Presentation Impl (ding-presentation-impl) * $Id:$ * $HeadURL:$ * %% * Copyright (C) 2006 - 2013 The Cytoscape Consortium * %% * This program 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 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 Lesser Public License for more details. * * You should have received a copy of the GNU General Lesser Public * License along with this program. If not, see * <http://www.gnu.org/licenses/lgpl-2.1.html>. * #L% */ import java.awt.Color; import java.awt.Paint; public class Main { static private Paint mixColor(Paint p, double value) { if (p == null || !(p instanceof Color)) return p; Color c = (Color) p; return new Color(c.getRed(), c.getGreen(), c.getBlue(), ((int) value) * 255 / 100); } }