114 lines
3.8 KiB
Java
114 lines
3.8 KiB
Java
/*
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* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package javax.swing.border;
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import java.awt.Graphics;
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import java.awt.Insets;
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import java.awt.Rectangle;
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import java.awt.Component;
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import java.io.Serializable;
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import java.beans.ConstructorProperties;
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/**
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* A class which provides an empty, transparent border which
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* takes up space but does no drawing.
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* <p>
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* <strong>Warning:</strong>
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* Serialized objects of this class will not be compatible with
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* future Swing releases. The current serialization support is
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* appropriate for short term storage or RMI between applications running
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* the same version of Swing. As of 1.4, support for long term storage
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* of all JavaBeans™
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* has been added to the <code>java.beans</code> package.
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* Please see {@link java.beans.XMLEncoder}.
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*
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* @author David Kloba
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*/
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@SuppressWarnings("serial")
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public class EmptyBorder extends AbstractBorder implements Serializable
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{
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protected int left, right, top, bottom;
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/**
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* Creates an empty border with the specified insets.
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* @param top the top inset of the border
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* @param left the left inset of the border
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* @param bottom the bottom inset of the border
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* @param right the right inset of the border
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*/
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public EmptyBorder(int top, int left, int bottom, int right) {
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this.top = top;
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this.right = right;
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this.bottom = bottom;
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this.left = left;
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}
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/**
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* Creates an empty border with the specified insets.
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* @param borderInsets the insets of the border
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*/
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@ConstructorProperties({"borderInsets"})
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public EmptyBorder(Insets borderInsets) {
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this.top = borderInsets.top;
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this.right = borderInsets.right;
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this.bottom = borderInsets.bottom;
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this.left = borderInsets.left;
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}
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/**
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* Does no drawing by default.
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*/
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public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {
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}
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/**
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* Reinitialize the insets parameter with this Border's current Insets.
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* @param c the component for which this border insets value applies
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* @param insets the object to be reinitialized
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*/
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public Insets getBorderInsets(Component c, Insets insets) {
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insets.left = left;
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insets.top = top;
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insets.right = right;
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insets.bottom = bottom;
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return insets;
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}
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/**
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* Returns the insets of the border.
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* @since 1.3
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*/
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public Insets getBorderInsets() {
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return new Insets(top, left, bottom, right);
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}
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/**
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* Returns whether or not the border is opaque.
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* Returns false by default.
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*/
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public boolean isBorderOpaque() { return false; }
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}
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