adjust JTextArea To Text - Java Swing

Java examples for Swing:JTextArea

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Description

adjust JTextArea To Text

Demo Code

/*/*from  www .j  av  a2 s .  c  om*/
 * Copyright (c) 2011, dhiller, http://www.dhiller.de Daniel Hiller, Warendorfer Str. 47, 48231 Warendorf, NRW,
 * Germany, All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
 * following conditions are met:
 * 
 * - Redistributions of source code must retain the above copyright notice, this list of conditions and the following
 * disclaimer. - 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. - Neither the
 * name of dhiller 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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 javax.swing.JTextArea;

public class Main {
    static void adjustToText(JTextArea testString) {
        testString.setColumns(columns(testString));
        testString.setRows(estimatedRows(testString));
    }

    static int columns(JTextArea testString) {
        return Math.min((int) (testString.getText().length() * 0.66), 80);
    }

    static int estimatedRows(JTextArea text) {
        return (int) (((text.getText().length() / (text.getColumns() > 0 ? text
                .getColumns() : 80)) + 1 + text.getText()
                .replaceAll("[^\\n]+", "").length()) / 2);
    }
}

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