VerticalToggleButton.java

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/*
 * Gridarta MMORPG map editor for Crossfire, Daimonin and similar games.
 * Copyright (C) 2000-2023 The Gridarta Developers.
 *
 * 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
 * (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, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
package net.sf.gridarta.gui.utils.borderpanel;
 
import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import javax.swing.ImageIcon;
import javax.swing.JToggleButton;
import org.jetbrains.annotations.NotNull;
 
public class VerticalToggleButton extends JToggleButton {
 
    private static final long serialVersionUID = 1L;
 
    @NotNull
    private static final Color TRANSPARENT = new Color(0, 0, 0, 0);
 
    public VerticalToggleButton(@NotNull final String title, final boolean right) {
        final Font font = getFont();
        final FontMetrics fontMetrics = getFontMetrics(font);
        final int textWidth = Math.max(1, fontMetrics.getHeight());
        final int textHeight = Math.max(1, fontMetrics.stringWidth(title));
        final BufferedImage bufferedImage = new BufferedImage(textWidth, textHeight, BufferedImage.TYPE_INT_ARGB);
        final Graphics2D g = bufferedImage.createGraphics();
        try {
            g.setColor(TRANSPARENT);
            g.fillRect(0, 0, textWidth, textHeight);
 
            g.setColor(getForeground());
            g.setFont(font);
            g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
 
            if (right) {
                g.rotate(Math.PI / 2.0);
                g.translate(0, 1 - textWidth);
            } else {
                g.rotate(-Math.PI / 2.0);
                g.translate(1 - textHeight, 0);
            }
            g.drawString(title, 0, fontMetrics.getAscent());
        } finally {
            g.dispose();
        }
 
        setIcon(new ImageIcon(bufferedImage));
    }
 
}