/*
* AbstractTreeCellRenderer.java
*
* Copyright (C) 2002, 2003, 2004, 2005, 2006 Takis Diakoumis
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
package org.underworldlabs.swing.tree;
import java.awt.Component;
import java.awt.Graphics;
import javax.swing.Icon;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellRenderer;
/* ----------------------------------------------------------
* CVS NOTE: Changes to the CVS repository prior to the
* release of version 3.0.0beta1 has meant a
* resetting of CVS revision numbers.
* ----------------------------------------------------------
*/
/**
* Abstract tree cell renderer with custom paint method.
*
* @author Takis Diakoumis
* @version $Revision: 1.4 $
* @date $Date: 2006/05/14 06:56:07 $
*/
public abstract class AbstractTreeCellRenderer extends DefaultTreeCellRenderer {
/**
* Sets the value of the current tree cell to value. If
* selected is true, the cell will be drawn as if selected.
* If expanded is true the node is currently expanded and if
* leaf is true the node represets a leaf and if hasFocus
* is true the node currently has focus. tree is the JTree
* the receiver is being configured for. Returns the Component
* that the renderer uses to draw the value.
*
* @return the Component that the renderer uses to draw the value
*/
public abstract Component getTreeCellRendererComponent(
JTree tree,
Object value,
boolean isSelected,
boolean isExpanded,
boolean isLeaf,
int row,
boolean hasFocus);
public void paintComponent(Graphics g) {
if (selected) {
int imageOffset = getLabelX();
// paint the background
if (backgroundSelectionColor != null) {
g.setColor(backgroundSelectionColor);
g.fillRect(imageOffset, 0, getWidth() - 1 - imageOffset,
getHeight());
}
// paint the border
if (borderSelectionColor != null) {
g.setColor(borderSelectionColor);
g.drawRect(imageOffset, 0, getWidth() - 1 - imageOffset,
getHeight() - 1);
}
}
super.paintComponent(g);
}
protected int getLabelX() {
Icon currentI = getIcon();
if(currentI != null && getText() != null) {
return currentI.getIconWidth() + Math.max(0, getIconTextGap() - 1);
}
return 0;
}
}
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