/* * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package javax.swing.border; import java.awt.Graphics;import java.awt.Insets;import java.awt.Color;import java.awt.Component;import java.awt.Graphics2D;import java.awt.Shape;import java.awt.geom.Path2D;import java.awt.geom.Rectangle2D;import java.awt.geom.RoundRectangle2D;import java.beans.ConstructorProperties; /** * A class which implements a line border of arbitrary thickness * and of a single color. * <p> * <strong>Warning:</strong> * Serialized objects of this class will not be compatible with * future Swing releases. The current serialization support is * appropriate for short term storage or RMI between applications running * the same version of Swing.  As of 1.4, support for long term storage * of all JavaBeans<sup><font size="-2">TM</font></sup> * has been added to the <code>java.beans</code> package. * Please see {@link java.beans.XMLEncoder}. * * @author David Kloba */public class LineBorder extends AbstractBorder{    private static Border blackLine;    private static Border grayLine;     protected int thickness;    protected Color lineColor;    protected boolean roundedCorners;     /** Convenience method for getting the Color.black LineBorder of thickness 1.      */    public static Border createBlackLineBorder() {        if (blackLine == null) {            blackLine = new LineBorder(Color.black, 1);        }        return blackLine;    }     /** Convenience method for getting the Color.gray LineBorder of thickness 1.      */    public static Border createGrayLineBorder() {        if (grayLine == null) {            grayLine = new LineBorder(Color.gray, 1);        }        return grayLine;    }     /**     * Creates a line border with the specified color and a     * thickness = 1.     * @param color the color for the border     */    public LineBorder(Color color) {        this(color, 1, false);    }     /**     * Creates a line border with the specified color and thickness.     * @param color the color of the border     * @param thickness the thickness of the border     */    public LineBorder(Color color, int thickness)  {        this(color, thickness, false);    }     /**     * Creates a line border with the specified color, thickness,     * and corner shape.     * @param color the color of the border     * @param thickness the thickness of the border     * @param roundedCorners whether or not border corners should be round     * @since 1.3     */    @ConstructorProperties({"lineColor", "thickness", "roundedCorners"})    public LineBorder(Color color, int thickness, boolean roundedCorners)  {        lineColor = color;        this.thickness = thickness;        this.roundedCorners = roundedCorners;    }     /**     * Paints the border for the specified component with the     * specified position and size.     * @param c the component for which this border is being painted     * @param g the paint graphics     * @param x the x position of the painted border     * @param y the y position of the painted border     * @param width the width of the painted border     * @param height the height of the painted border     */    public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {        if ((this.thickness > 0) && (g instanceof Graphics2D)) {            Graphics2D g2d = (Graphics2D) g;             Color oldColor = g2d.getColor();            g2d.setColor(this.lineColor);             Shape outer;            Shape inner;             int offs = this.thickness;            int size = offs + offs;            if (this.roundedCorners) {                int arc = offs + size;                outer = new RoundRectangle2D.Float(x, y, width, height, arc, arc);                inner = new RoundRectangle2D.Float(x + offs, y + offs, width - size, height - size, arc, arc);            }            else {                outer = new Rectangle2D.Float(x, y, width, height);                inner = new Rectangle2D.Float(x + offs, y + offs, width - size, height - size);            }            Path2D path = new Path2D.Float(Path2D.WIND_EVEN_ODD);            path.append(outer, false);            path.append(inner, false);            g2d.fill(path);            g2d.setColor(oldColor);        }    }     /**     * Reinitialize the insets parameter with this Border's current Insets.     * @param c the component for which this border insets value applies     * @param insets the object to be reinitialized     */    public Insets getBorderInsets(Component c, Insets insets) {        insets.set(thickness, thickness, thickness, thickness);        return insets;    }     /**     * Returns the color of the border.     */    public Color getLineColor()     {        return lineColor;    }     /**     * Returns the thickness of the border.     */    public int getThickness()       {        return thickness;    }     /**     * Returns whether this border will be drawn with rounded corners.     * @since 1.3     */    public boolean getRoundedCorners() {        return roundedCorners;    }     /**     * Returns whether or not the border is opaque.     */    public boolean isBorderOpaque() {        return !roundedCorners;    } }