Java JTable Column Pack packColumns(JTable table, int margin)

Description

pack Columns

License

Open Source License

Declaration

public static void packColumns(JTable table, int margin) 

Method Source Code

//package com.java2s;
/* /*from w ww  . j  av  a2  s . c  om*/
 * Copyright (C) 2014 Center of Excellence in Information Assurance
 *
 * 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 3 of the License, or
 * (at your option) 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, see <http://www.gnu.org/licenses/>.
 */

import javax.swing.JTable;
import javax.swing.table.TableModel;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.TableColumn;
import javax.swing.table.TableCellRenderer;

import java.awt.Component;

public class Main {
    public static void packColumns(JTable table, int margin) {
        for (int c = 0; c < table.getColumnCount(); c++) {
            packColumn(table, c, 2);
        }
    }

    public static void packColumn(JTable table, int vColIndex, int margin) {
        TableModel model = table.getModel();
        DefaultTableColumnModel colModel = (DefaultTableColumnModel) table
                .getColumnModel();
        TableColumn col = colModel.getColumn(vColIndex);
        int width = 0;

        // Get width of column header
        TableCellRenderer renderer = col.getHeaderRenderer();
        if (renderer == null) {
            renderer = table.getTableHeader().getDefaultRenderer();
        }
        Component comp = renderer.getTableCellRendererComponent(table,
                col.getHeaderValue(), false, false, 0, 0);
        width = comp.getPreferredSize().width;

        // Get maximum width of column data
        for (int r = 0; r < table.getRowCount(); r++) {
            renderer = table.getCellRenderer(r, vColIndex);
            comp = renderer.getTableCellRendererComponent(table,
                    table.getValueAt(r, vColIndex), false, false, r,
                    vColIndex);
            width = Math.max(width, comp.getPreferredSize().width);
        }

        // Add margin
        width += 2 * margin;

        // Set the width
        col.setPreferredWidth(width);
    }
}

Related

1. packColumn(JTable table, int vColIndex, int margin)
2. packColumn(JTable table, int vColIndex, int margin)
3. packColumn(JTable table, int vColIndex, int margin)
4. packColumns(final JTable table, final int margin)
5. packColumns(JTable table)
6. packColumns(JTable table, int width)
7. packColumnsWidthFixedFirst(JTable table, int margin)