org.jdesktop.swingx.decorator.ColorHighlighter Maven / Gradle / Ivy
/*
* $Id: ColorHighlighter.java 4082 2011-11-15 18:39:43Z kschaefe $
*
* 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 static org.jdesktop.swingx.util.PaintUtils.blend;
import java.awt.Color;
import java.awt.Component;
/**
* A Highlighter to modify component colors.
*
* As of SwingX 1.6.1, {@code ColorHighlighter} now blends non-opaque colors.
* This will have little effect on previous users, who were likely to be
* using fully-opaque colors. If you are, however, supplying a non-opaque color
* and need it to be considered opaque, use {@link org.jdesktop.swingx.util.PaintUtils#removeAlpha(Color)}.
*
* @author Jeanette Winzenburg
* @author Karl Schaefer
*/
public class ColorHighlighter extends AbstractHighlighter {
private Color background;
private Color foreground;
private Color selectedBackground;
private Color selectedForeground;
/**
* Instantiates a ColorHighlighter with null colors and default
* HighlightPredicate.
*/
public ColorHighlighter() {
this(null);
}
/**
* Instantiates a ColorHighlighter with null colors and uses the
* specified HighlightPredicate.
*
* @param predicate the HighlightPredicate to use.
*/
public ColorHighlighter(HighlightPredicate predicate) {
this(predicate, null, null);
}
/**
* Constructs a ColorHighlighter with the specified
* background and foreground colors and null section colors. Uses
* the default predicate.
*
* @param cellBackground background color for unselected cell state
* @param cellForeground foreground color for unselected cell state
*/
public ColorHighlighter(Color cellBackground, Color cellForeground) {
this(null, cellBackground, cellForeground);
}
/**
* Constructs a ColorHighlighter with the specified
* unselected colors and HighlightPredicate.
* Initializes selected colors to null.
*
* @param predicate the HighlightPredicate to use.
* @param cellBackground background color for unselected cell state
* @param cellForeground foreground color for unselected cell state
*/
public ColorHighlighter(HighlightPredicate predicate, Color cellBackground,
Color cellForeground) {
this(predicate, cellBackground, cellForeground, null, null);
}
/**
* Constructs a ColorHighlighter with the specified
* background and foreground colors for unselected and selected cells.
* Uses the default HighlightPredicate.
*
* @param cellBackground background color for unselected cell state
* @param cellForeground foreground color for unselected cell state
* @param selectedBackground background color for selected cell state
* @param selectedForeground foreground color for selected cell state
*/
public ColorHighlighter(Color cellBackground, Color cellForeground,
Color selectedBackground, Color selectedForeground) {
this(null, cellBackground, cellForeground, selectedBackground, selectedForeground);
}
/**
* Constructs a ColorHighlighter with the specified colors
* and HighlightPredicate.
*
* @param predicate the HighlightPredicate to use.
* @param cellBackground background color for unselected cell state
* @param cellForeground foreground color for unselected cell state
* @param selectedBackground background color for selected cell state
* @param selectedForeground foreground color for selected cell state
*/
public ColorHighlighter(HighlightPredicate predicate, Color cellBackground,
Color cellForeground, Color selectedBackground,
Color selectedForeground) {
super(predicate);
this.background = cellBackground;
this.foreground = cellForeground;
this.selectedBackground = selectedBackground;
this.selectedForeground = selectedForeground;
}
/**
* {@inheritDoc}
*/
@Override
protected Component doHighlight(Component renderer, ComponentAdapter adapter) {
applyBackground(renderer, adapter);
applyForeground(renderer, adapter);
return renderer;
}
/**
* Applies a suitable background for the renderer component within the
* specified adapter.
*
* This implementation applies its background or selectedBackground color
* (depending on the adapter's selected state) if != null.
* Otherwise it does nothing.
*
* @param renderer the cell renderer component that is to be decorated
* @param adapter the ComponentAdapter for this decorate operation
*/
protected void applyBackground(Component renderer, ComponentAdapter adapter) {
Color color = adapter.isSelected() ? getSelectedBackground() : getBackground();
renderer.setBackground(blend(renderer.getBackground(), color));
}
/**
* Applies a suitable foreground for the renderer component within the
* specified adapter.
*
* This implementation applies its foreground or selectedfForeground color
* (depending on the adapter's selected state) if != null.
* Otherwise it does nothing.
*
* @param renderer the cell renderer component that is to be decorated
* @param adapter the ComponentAdapter for this decorate operation
*/
protected void applyForeground(Component renderer, ComponentAdapter adapter) {
Color color = adapter.isSelected() ? getSelectedForeground() : getForeground();
renderer.setForeground(blend(renderer.getForeground(), color));
}
//---------------------- state
/**
* Returns the background color of this ColorHighlighter.
*
* @return the background color of this ColorHighlighter,
* or null, if no background color has been set
*/
public Color getBackground() {
return background;
}
/**
* Sets the background color of this ColorHighlighter and
* notifies registered ChangeListeners.
*
* @param color the background color of this Highlighter,
* or null, to clear any existing background color
*/
public void setBackground(Color color) {
if (areEqual(color, getBackground())) return;
background = color;
fireStateChanged();
}
/**
* Returns the foreground color of this ColorHighlighter.
*
* @return the foreground color of this ColorHighlighter,
* or null, if no foreground color has been set
*/
public Color getForeground() {
return foreground;
}
/**
* Sets the foreground color of this ColorHighlighter and notifies
* registered ChangeListeners.
*
* @param color the foreground color of this ColorHighlighter,
* or null, to clear any existing foreground color
*/
public void setForeground(Color color) {
if (areEqual(color, getForeground())) return;
foreground = color;
fireStateChanged();
}
/**
* Returns the selected background color of this ColorHighlighter.
*
* @return the selected background color of this ColorHighlighter,
* or null, if no selected background color has been set
*/
public Color getSelectedBackground() {
return selectedBackground;
}
/**
* Sets the selected background color of this ColorHighlighter
* and notifies registered ChangeListeners.
*
* @param color the selected background color of this ColorHighlighter,
* or null, to clear any existing selected background color
*/
public void setSelectedBackground(Color color) {
if (areEqual(color, getSelectedBackground()))return;
selectedBackground = color;
fireStateChanged();
}
/**
* Returns the selected foreground color of this ColorHighlighter.
*
* @return the selected foreground color of this ColorHighlighter,
* or null, if no selected foreground color has been set
*/
public Color getSelectedForeground() {
return selectedForeground;
}
/**
* Sets the selected foreground color of this ColorHighlighter and
* notifies registered ChangeListeners.
*
* @param color the selected foreground color of this ColorHighlighter,
* or null, to clear any existing selected foreground color
*/
public void setSelectedForeground(Color color) {
if (areEqual(color, getSelectedForeground())) return;
selectedForeground = color;
fireStateChanged();
}
}