Java JList pointIsInActualBounds(JList list, int index, Point point)

Description

Returns true if the given point is within the actual bounds of the JList item at index (not just inside the cell).

License

Open Source License

Declaration

private static boolean pointIsInActualBounds(JList list, int index, Point point) 

Method Source Code

//package com.java2s;
/*/* w w  w.ja va2s. c  o  m*/
 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

import java.awt.*;

import javax.swing.*;

public class Main {
    /**
     * Returns true if the given point is within the actual bounds of the
     * JList item at index (not just inside the cell).
     */
    private static boolean pointIsInActualBounds(JList list, int index, Point point) {
        ListCellRenderer renderer = list.getCellRenderer();
        ListModel dataModel = list.getModel();
        Object value = dataModel.getElementAt(index);
        Component item = renderer.getListCellRendererComponent(list, value, index, false, false);
        Dimension itemSize = item.getPreferredSize();
        Rectangle cellBounds = list.getCellBounds(index, index);
        if (!item.getComponentOrientation().isLeftToRight()) {
            cellBounds.x += (cellBounds.width - itemSize.width);
        }
        cellBounds.width = itemSize.width;

        return cellBounds.contains(point);
    }
}

Related

1. JListClearData(javax.swing.JList list)
2. loc2IndexFileList(JList list, Point point)
3. navigateThroughList(javax.swing.JList list, int keyCode)
4. pickFirstIfNone(JList list)
5. pointIsInActualBounds(JList list, int index, Point point)
6. setErrorBackground(JList comp)
7. updatebandList(final JList bandList, final Map paramMap, final String paramName)
8. updateList(JList list, LinkedHashMap map)