Java JComponent Size setMinimumSize(JComponent component, int numChars)

Description

set Minimum Size

License

Apache License

Declaration

public static void setMinimumSize(JComponent component, int numChars) 

Method Source Code

//package com.java2s;
/*/* w w w  . j ava  2 s.  com*/
 * WbSwingUtilities.java
 *
 * This file is part of SQL Workbench/J, http://www.sql-workbench.net
 *
 * Copyright 2002-2015, Thomas Kellerer
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at.
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * To contact the author please send an email to: support@sql-workbench.net
 *
 */

import javax.swing.*;

import java.awt.*;

public class Main {
    public static void setMinimumSize(JComponent component, int lines,
            int columns) {
        Font font = component.getFont();
        if (font != null) {
            FontMetrics fm = component.getFontMetrics(font);
            int width = fm.stringWidth("M");
            int height = fm.getHeight();
            Dimension d = new Dimension(width * columns, height * lines);
            component.setPreferredSize(d);
        }
    }

    public static void setMinimumSize(JComponent component, int numChars) {
        int width = calculateCharWidth(component, numChars);
        if (width > 0) {
            Dimension current = component.getPreferredSize();
            Dimension d = new Dimension(width, current.height);
            component.setPreferredSize(d);
        }
    }

    public static int calculateCharWidth(JComponent component, int numChars) {
        if (numChars < 0)
            return -1;
        if (component == null)
            return -1;

        int width = -1;
        Font font = component.getFont();
        if (font != null) {
            FontMetrics fm = component.getFontMetrics(font);
            int charWidth = fm.stringWidth("M");
            width = charWidth * numChars;
        }
        return width;
    }
}

Related

1. setFixedSize(JComponent component, Dimension size)
2. setFixedSize(JComponent component, int width, int height)
3. setMaximumSize(Dimension d, JComponent... components)
4. setMaximumSize(Dimension maxComponentSize, JComponent component)
5. setMaxPreferredSize(JComponent comp)
6. setPreferredSize(JComponent comp, int height, int width)
7. setSize(Dimension size, JComponent[] components)
8. setSize(final Component component, final int width, final int height)
9. setSize(JComponent c, int w)