001 /*
002 * $Id: TreeRolloverProducer.java 3296 2009-03-11 12:06:01Z kleopatra $
003 *
004 * Copyright 2007 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.rollover;
023
024 import java.awt.Point;
025 import java.awt.Rectangle;
026 import java.awt.event.MouseEvent;
027
028 import javax.swing.JComponent;
029
030 import org.jdesktop.swingx.JXTree;
031
032 /**
033 * Tree-specific implementation of RolloverProducer.
034 * <p>
035 * This implementation assumes a "hit" for rollover if the mouse is anywhere in
036 * the total width of the tree. Additionally, a pressed to the right (but
037 * outside of the label bounds) is re-dispatched as a pressed just inside the
038 * label bounds. This is a first go for #166-swingx.
039 * <p>
040 *
041 * PENDING JW: bidi-compliance of pressed?
042 *
043 * @author Jeanette Winzenburg
044 */
045 public class TreeRolloverProducer extends RolloverProducer {
046
047 @Override
048 public void mousePressed(MouseEvent e) {
049 JXTree tree = (JXTree) e.getComponent();
050 Point mousePoint = e.getPoint();
051 int labelRow = tree.getRowForLocation(mousePoint.x, mousePoint.y);
052 // default selection
053 if (labelRow >= 0)
054 return;
055 int row = tree.getClosestRowForLocation(mousePoint.x, mousePoint.y);
056 Rectangle bounds = tree.getRowBounds(row);
057 if (bounds == null) {
058 row = -1;
059 } else {
060 if ((bounds.y + bounds.height < mousePoint.y)
061 || bounds.x > mousePoint.x) {
062 row = -1;
063 }
064 }
065 // no hit
066 if (row < 0)
067 return;
068 tree.dispatchEvent(new MouseEvent(tree, e.getID(), e.getWhen(), e
069 .getModifiers(), bounds.x + bounds.width - 2, mousePoint.y, e
070 .getClickCount(), e.isPopupTrigger(), e.getButton()));
071 }
072
073 @Override
074 protected void updateRolloverPoint(JComponent component, Point mousePoint) {
075 JXTree tree = (JXTree) component;
076 int row = tree.getClosestRowForLocation(mousePoint.x, mousePoint.y);
077 Rectangle bounds = tree.getRowBounds(row);
078 if (bounds == null) {
079 row = -1;
080 } else {
081 if ((bounds.y + bounds.height < mousePoint.y)
082 || bounds.x > mousePoint.x) {
083 row = -1;
084 }
085 }
086 int col = row < 0 ? -1 : 0;
087 rollover.x = col;
088 rollover.y = row;
089 }
090
091 }