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jtstand-common is a library derived from jcommon, used by jtstand-chart, which is derived from jfreechart
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/*
 * Copyright (c) 2009 Albert Kurucz. 
 *
 * This file, TextBlockPanel.java is part of JTStand.
 *
 * JTStand is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * JTStand 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with GTStand.  If not, see .
 */

package org.jfree.demo;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.geom.Rectangle2D;
import javax.swing.JPanel;

import org.jfree.text.G2TextMeasurer;
import org.jfree.text.TextBlock;
import org.jfree.text.TextBlockAnchor;
import org.jfree.text.TextUtilities;

/**
 * A panel used by the {@link DrawStringDemo} class.
 *
 * @author David Gilbert
 */
public class TextBlockPanel extends JPanel {

    /** The preferred size for the panel. */
    private static final Dimension PREFERRED_SIZE = new Dimension(500, 300);

    /** The text to display. */
    private String text;
    
    /** The font to use. */
    private Font font;

    /**
     * Creates a new panel.
     *
     * @param text  the text.
     * @param font  the font.
     */
    public TextBlockPanel(final String text, final Font font) {
        this.text = text;
        this.font = font;
    }

    /**
     * Returns the preferred size for the panel.
     *
     * @return The preferred size.
     */
    public Dimension getPreferredSize() {
        return PREFERRED_SIZE;
    }

    /**
     * Returns the font.
     *
     * @return The font.
     */
    public Font getFont() {
        return this.font;
    }

    /**
     * Sets the font.
     *
     * @param font  the font.
     */
    public void setFont(final Font font) {
        this.font = font;
    }

    /**
     * Paints the panel.
     *
     * @param g  the graphics device.
     */
    public void paintComponent(final Graphics g) {

        super.paintComponent(g);
        final Graphics2D g2 = (Graphics2D) g;

        final Dimension size = getSize();
        final Insets insets = getInsets();
        final Rectangle2D available = new Rectangle2D.Double(insets.left, insets.top,
                                      size.getWidth() - insets.left - insets.right,
                                      size.getHeight() - insets.top - insets.bottom);

        final double x = available.getX();
        final double y = available.getY();
        final float width = (float) available.getWidth();
        final TextBlock block = TextUtilities.createTextBlock(
            this.text, this.font, Color.black, width, new G2TextMeasurer(g2)
        );
        g2.setPaint(Color.black);
        block.draw(g2, (float) x, (float) y, TextBlockAnchor.TOP_LEFT, 0.0f, 0.0f, 0.0);

    }

}