Showing the changes to java/pkg/sun/swing/PrintColorUIResource.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 2004, 2006, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package sun.swing; | |
| 27 | + | |
| 28 | +import java.awt.Color; | |
| 29 | +import javax.swing.plaf.ColorUIResource; | |
| 30 | + | |
| 31 | +/** | |
| 32 | + * A subclass of ColorUIResource that wraps an alternate color | |
| 33 | + * for use during printing. Useful to replace color values that | |
| 34 | + * may look poor in printed output. | |
| 35 | + * | |
| 36 | + * @author Shannon Hickey | |
| 37 | + * | |
| 38 | + */ | |
| 39 | +public class PrintColorUIResource extends ColorUIResource { | |
| 40 | + | |
| 41 | + /** The color to use during printing */ | |
| 42 | + private Color printColor; | |
| 43 | + | |
| 44 | + /** | |
| 45 | + * Construct an instance for the given RGB value and | |
| 46 | + * alternate color to use during printing. | |
| 47 | + * | |
| 48 | + * @param rgb the color rgb value | |
| 49 | + * @param printColor the alternate color for printing | |
| 50 | + */ | |
| 51 | + public PrintColorUIResource(int rgb, Color printColor) { | |
| 52 | + super(rgb); | |
| 53 | + this.printColor = printColor; | |
| 54 | + } | |
| 55 | + | |
| 56 | + /** | |
| 57 | + * Return the color to use during printing. If no alternate | |
| 58 | + * color was specified on construction, this method will | |
| 59 | + * return <code>this</code>. | |
| 60 | + * | |
| 61 | + * @return the color to use during printing | |
| 62 | + */ | |
| 63 | + public Color getPrintColor() { | |
| 64 | + return ((printColor != null) ? printColor : this); | |
| 65 | + } | |
| 66 | + | |
| 67 | + /** | |
| 68 | + * Replaces this object with a plain {@code ColorUIResource} during | |
| 69 | + * serialization. Since {@code PrintColorUIResource} resides in the | |
| 70 | + * sun.swing package, access can be disallowed to it by a security | |
| 71 | + * manager. When access is disallowed, deserialization of any object | |
| 72 | + * with reference to a {@code PrintColorUIResource} fails. | |
| 73 | + * <p> | |
| 74 | + * Since {@code PrintColorUIResource) is used only by Swing's look | |
| 75 | + * and feels, and we know that UI supplied colors are replaced after | |
| 76 | + * deserialization when the UI is re-installed, the only important | |
| 77 | + * aspect of the {@code PrintColorUIResource} that needs to be | |
| 78 | + * persisted is the fact that it is a {@code ColorUIResource}. As | |
| 79 | + * such, we can avoid the problem outlined above by replacing | |
| 80 | + * the problematic {@code PrintColorUIResource} with a plain | |
| 81 | + * {@code ColorUIResource}. | |
| 82 | + * <p> | |
| 83 | + * Note: As a result of this method, it is not possible to write | |
| 84 | + * a {@code PrintColorUIResource} to a stream and then read | |
| 85 | + * back a {@code PrintColorUIResource}. This is acceptable since we | |
| 86 | + * don't have a requirement for that in Swing. | |
| 87 | + */ | |
| 88 | + private Object writeReplace() { | |
| 89 | + return new ColorUIResource(this); | |
| 90 | + } | |
| 91 | +} | |