org.jdesktop.swingx.decorator.ShadingColorHighlighter Maven / Gradle / Ivy
/*
* $Id: ShadingColorHighlighter.java 3100 2008-10-14 22:33:10Z rah003 $
*
* Copyright 2006 Sun Microsystems, Inc., 4150 Network Circle,
* Santa Clara, California 95054, U.S.A. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.jdesktop.swingx.decorator;
import java.awt.Color;
import java.awt.Component;
/**
* Experimental replacement of HierarchicalColumnHighligher.
* Darkens the component's background.
*
* @author Jeanette Winzenburg
*/
public class ShadingColorHighlighter extends ColorHighlighter {
/**
* Instantiates a Highlighter with null colors using the default
* HighlightPredicate.
*
*/
public ShadingColorHighlighter() {
this(null);
}
/**
* Instantiates a Highlighter with null colors using the specified
* HighlightPredicate.
*
* @param predicate the HighlightPredicate to use.
*/
public ShadingColorHighlighter(HighlightPredicate predicate) {
super(predicate, null, null);
}
/**
* Applies a suitable background for the renderer component within the
* specified adapter.
*
* This implementation applies its a darkened background to an unselected
* adapter. Does nothing for selected cells.
*
* @param renderer the cell renderer component that is to be decorated
* @param adapter the ComponentAdapter for this decorate operation
*/
@Override
protected void applyBackground(Component renderer, ComponentAdapter adapter) {
if (adapter.isSelected())
return;
// PENDING JW: really? That would be applying a absolute color, instead
// of shading whatever the renderer has.
Color background = getBackground();
if (background == null) {
background = renderer.getBackground();
}
// Change to the following
// Color background = renderer.getBackground();
if (background != null) {
renderer.setBackground(computeBackgroundSeed(background));
}
}
protected Color computeBackgroundSeed(Color seed) {
return new Color(Math.max((int) (seed.getRed() * 0.95), 0), Math.max(
(int) (seed.getGreen() * 0.95), 0), Math.max((int) (seed
.getBlue() * 0.95), 0));
}
}