001 /*
002 * $Id: IconBorder.java,v 1.5 2005/10/24 14:00:37 kleopatra Exp $
003 *
004 * Copyright 2004 Sun Microsystems, Inc., 4150 Network Circle,
005 * Santa Clara, California 95054, U.S.A. All rights reserved.
006 *
007 * This library is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * This library is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015 * Lesser General Public License for more details.
016 *
017 * You should have received a copy of the GNU Lesser General Public
018 * License along with this library; if not, write to the Free Software
019 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
020 */
021
022 package org.jdesktop.swingx.border;
023
024 import java.awt.Component;
025 import java.awt.ComponentOrientation;
026 import java.awt.Graphics;
027 import java.awt.Insets;
028 import java.awt.Rectangle;
029
030 import javax.swing.Icon;
031 import javax.swing.SwingConstants;
032 import javax.swing.border.Border;
033
034 /**
035 * @author Amy Fowler
036 * @version 1.0
037 */
038 public class IconBorder implements Border {
039
040 private static final int PAD = 4;
041 private Icon icon;
042 private int iconPosition;
043 private Rectangle iconBounds = new Rectangle();
044 public IconBorder() {
045 this(null);
046 }
047
048 public IconBorder(Icon validIcon) {
049 this(validIcon, SwingConstants.TRAILING);
050 }
051
052 public IconBorder(Icon validIcon, int iconPosition) {
053 this.icon = validIcon;
054 this.iconPosition = iconPosition;
055 }
056
057 public Insets getBorderInsets(Component c) {
058 int horizontalInset = icon.getIconWidth() + (2 * PAD);
059 int iconPosition = bidiDecodeLeadingTrailing(c.getComponentOrientation(), this.iconPosition);
060 if (iconPosition == SwingConstants.EAST) {
061 return new Insets(0, 0, 0, horizontalInset);
062 }
063 return new Insets(0, horizontalInset, 0, 0);
064 }
065
066 public void setIcon(Icon validIcon) {
067 this.icon = validIcon;
068 }
069
070 public boolean isBorderOpaque() {
071 return false;
072 }
073
074 public void paintBorder(Component c, Graphics g, int x, int y, int width,
075 int height) {
076 int iconPosition = bidiDecodeLeadingTrailing(c.getComponentOrientation(), this.iconPosition);
077 if (iconPosition == SwingConstants.NORTH_EAST) {
078 iconBounds.y = y + PAD;
079 iconBounds.x = x + width - PAD - icon.getIconWidth();
080 } else if (iconPosition == SwingConstants.EAST) { // EAST
081 iconBounds.y = y
082 + ((height - icon.getIconHeight()) / 2);
083 iconBounds.x = x + width - PAD - icon.getIconWidth();
084 } else if (iconPosition == SwingConstants.WEST) {
085 iconBounds.y = y
086 + ((height - icon.getIconHeight()) / 2);
087 iconBounds.x = x + PAD;
088 }
089 iconBounds.width = icon.getIconWidth();
090 iconBounds.height = icon.getIconHeight();
091 icon.paintIcon(c, g, iconBounds.x, iconBounds.y);
092 }
093
094 /**
095 * Returns EAST or WEST depending on the ComponentOrientation and
096 * the given postion LEADING/TRAILING this method has no effect for other
097 * position values
098 */
099 private int bidiDecodeLeadingTrailing(ComponentOrientation c, int position) {
100 if(position == SwingConstants.TRAILING) {
101 if(!c.isLeftToRight()) {
102 return SwingConstants.WEST;
103 }
104 return SwingConstants.EAST;
105 }
106 if(position == SwingConstants.LEADING) {
107 if(!c.isLeftToRight()) {
108 return SwingConstants.WEST;
109 }
110 return SwingConstants.EAST;
111 }
112 return position;
113 }
114
115 }