| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) |
| * |
| * 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 |
| */ |
| package proguard.gui.splash; |
| |
| import java.awt.*; |
| |
| /** |
| * This VariableColor varies linearly with respect to its Timing. |
| * |
| * @author Eric Lafortune |
| */ |
| public class LinearColor implements VariableColor |
| { |
| private final Color fromValue; |
| private final Color toValue; |
| private final Timing timing; |
| |
| private double cachedTiming = -1.0; |
| private Color cachedColor; |
| |
| |
| /** |
| * Creates a new LinearColor. |
| * @param fromValue the value that corresponds to a timing of 0. |
| * @param toValue the value that corresponds to a timing of 1. |
| * @param timing the applied timing. |
| */ |
| public LinearColor(Color fromValue, Color toValue, Timing timing) |
| { |
| this.fromValue = fromValue; |
| this.toValue = toValue; |
| this.timing = timing; |
| } |
| |
| |
| // Implementation for VariableColor. |
| |
| public Color getColor(long time) |
| { |
| double t = timing.getTiming(time); |
| if (t != cachedTiming) |
| { |
| cachedTiming = t; |
| cachedColor = |
| t == 0.0 ? fromValue : |
| t == 1.0 ? toValue : |
| new Color((int)(fromValue.getRed() + t * (toValue.getRed() - fromValue.getRed())), |
| (int)(fromValue.getGreen() + t * (toValue.getGreen() - fromValue.getGreen())), |
| (int)(fromValue.getBlue() + t * (toValue.getBlue() - fromValue.getBlue()))); |
| } |
| |
| return cachedColor; |
| } |
| } |