Showing the changes to java/pkg/sun/swing/PrintColorUIResource.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,91 @@ | |||
| 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 | } | ||