001/* 002 * $Id: GradientThumbRenderer.java 4082 2011-11-15 18:39:43Z kschaefe $ 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 */ 021package org.jdesktop.swingx.color; 022 023import java.awt.Color; 024import java.awt.Graphics; 025import java.awt.Image; 026 027import javax.imageio.ImageIO; 028import javax.swing.JComponent; 029 030import org.jdesktop.swingx.JXMultiThumbSlider; 031import org.jdesktop.swingx.multislider.ThumbRenderer; 032import org.jdesktop.swingx.util.PaintUtils; 033 034public class GradientThumbRenderer extends JComponent implements ThumbRenderer { 035 private Image thumb_black; 036 private Image thumb_gray; 037 038 public GradientThumbRenderer() { 039 super(); 040 041 try { 042 thumb_black = ImageIO.read(GradientThumbRenderer.class.getResourceAsStream("/icons/thumb_black.png")); 043 thumb_gray = ImageIO.read(GradientThumbRenderer.class.getResourceAsStream("/icons/thumb_gray.png")); 044 } catch (Exception ex) { 045// ex.printStackTrace(); 046 } 047 } 048 049 private boolean selected; 050 @Override 051 protected void paintComponent(Graphics g) { 052 JComponent thumb = this; 053 int w = thumb.getWidth(); 054 g.setColor(getForeground()); 055 g.fillRect(0, 0, w - 1, w - 1); 056 if (selected) { 057 g.drawImage(thumb_black, 0, 0, null); 058 } else { 059 g.drawImage(thumb_gray, 0, 0, null); 060 } 061 } 062 063 public JComponent getThumbRendererComponent(JXMultiThumbSlider slider, int index, boolean selected) { 064 Color c = (Color)slider.getModel().getThumbAt(index).getObject(); 065 c = PaintUtils.removeAlpha(c); 066 this.setForeground(c); 067 this.selected = selected; 068 return this; 069 } 070}