Java tutorial
//package com.java2s; /* * Copyright (c) 2002 and later by MH Software-Entwicklung. All Rights Reserved. * * JTattoo is multiple licensed. If your are an open source developer you can use * it under the terms and conditions of the GNU General Public License version 2.0 * or later as published by the Free Software Foundation. * * see: gpl-2.0.txt * * If you pay for a license you will become a registered user who could use the * software under the terms and conditions of the GNU Lesser General Public License * version 2.0 or later with classpath exception as published by the Free Software * Foundation. * * see: lgpl-2.0.txt * see: classpath-exception.txt * * Registered users could also use JTattoo under the terms and conditions of the * Apache License, Version 2.0 as published by the Apache Software Foundation. * * see: APACHE-LICENSE-2.0.txt */ import java.awt.*; public class Main { public static void fillVerGradient(Graphics g, Color[] colors, int x, int y, int w, int h) { int steps = colors.length; double dx = (double) w / (double) steps; int x1 = x; for (int i = 0; i < steps; i++) { int x2 = x + (int) Math.round((double) i * dx); g.setColor(colors[i]); if (i == (steps - 1)) { g.fillRect(x1, y, x + w - x1, h); } else { g.fillRect(x1, y, x2 - x1, h); } x1 = x2; } } }