001 /*
002 * $Id: SortArrowIcon.java,v 1.3 2005/10/10 18:01:39 rbair 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.icon;
023
024 import java.awt.Color;
025 import java.awt.Component;
026 import java.awt.Graphics;
027
028 import javax.swing.Icon;
029 import javax.swing.plaf.UIResource;
030
031 public class SortArrowIcon implements Icon, UIResource {
032 private boolean ascending = true;
033 //REMIND(aim): support more configurable sizes
034 private int width = 8;
035 private int height = 8;
036
037 public SortArrowIcon(boolean ascending) {
038 this.ascending = ascending;
039 }
040
041 public int getIconWidth() {
042 return width;
043 }
044
045 public int getIconHeight() {
046 return height;
047 }
048
049 public void paintIcon(Component c, Graphics g, int x, int y) {
050 Color base = c.getBackground();
051 Color shadow = base.darker().darker();
052 Color highlight = Color.white;
053
054 if (ascending) {
055 g.setColor(shadow);
056 int y1 = height-1;
057 for(int x1=0; x1 < width/2 ; x1++) {
058 g.drawLine(x + x1, y + y1, x + x1, y + y1 - 1);
059 y1 -= ((x1+1 == (width/2)-1)? 1 : 2);
060 }
061 g.setColor(highlight);
062 y1 = height-1;
063 for (int x1 = width-1; x1 >= width / 2; x1--) {
064 g.drawLine(x + x1, y + y1, x + x1, y + y1 - 1);
065 y1 -= ( (x1 - 1 == (width / 2)) ? 1 : 2);
066 }
067 g.drawLine(x + 1, y + height-1, x + width - 1, y + height-1);
068 } else {
069 // descending
070 g.setColor(shadow);
071 int y1 = 1;
072 for (int x1 = 0; x1 < width/2 ; x1++) {
073 g.drawLine(x + x1, y + y1, x + x1, y + y1 + 1);
074 y1 += (x1+1 == (width/2-1))? 1 : 2;
075 }
076 g.setColor(highlight);
077 y1 = 1;
078 for (int x1 = width - 1; x1 >= width/2; x1--) {
079 g.drawLine(x + x1, y + y1, x + x1, y + y1 + 1);
080 y1 += (x1-1 == width/2)? 1 : 2;
081 }
082 g.setColor(shadow);
083 g.drawLine(x + 1, y + 1, x + width - 1, y + 1);
084 }
085 }
086 }