Get bounds of a multi-line text - Java 2D Graphics

Java examples for 2D Graphics:Line

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Description

Get bounds of a multi-line text

Demo Code

/*//from  w  w w .java2 s  . c o m
 * A Collection of Miscellaneous Utilities
 *
 * Copyright 2010
 *      The President and Fellows of Harvard College.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
//package com.java2s;
import java.awt.geom.*;

import java.awt.*;

import javax.swing.*;

public class Main {
    /**
     * Get bounds of a multi-line text
     * 
     * @param fm the font metrics
     * @param s the string
     * @return the bounds
     */
    public static Rectangle2D getTextBounds(FontMetrics fm, String s) {

        if (s.indexOf('\n') >= 0) {
            String[] a = s.split("\n");

            int fh = fm.getFont().getSize();
            int lh = (int) fh + 1;
            double h = lh * a.length;

            double w = 0;
            for (int ai = 0; ai < a.length; ai++) {
                int tw = SwingUtilities.computeStringWidth(fm, a[ai]);
                if (tw > w)
                    w = tw;
            }

            return new Rectangle2D.Double(0, 0, w, h);
        } else {

            int h = fm.getFont().getSize();
            int w = SwingUtilities.computeStringWidth(fm, s);

            return new Rectangle2D.Double(0, 0, w, h);
        }
    }

    /**
     * Get bounds of a multi-line text
     * 
     * @param g the graphics context
     * @param s the string
     * @return the bounds
     */
    public static Rectangle2D getTextBounds(Graphics g, String s) {

        FontMetrics fm = g.getFontMetrics();
        return getTextBounds(fm, s);
    }
}

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