Java Tutorial/SWT/StyledText Format

Get and set the number of columns used to display tabs using getTabs() and setTabs(), respectively

StyledText defaults to a tab width of four columns.

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class StyledTextTabSize {
  public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    StyledText styledText = new StyledText(shell, SWT.V_SCROLL | SWT.BORDER);
    styledText.setText("12345");
    styledText.setTabs(2);    
    
    styledText.setBounds(10, 10, 100, 100);
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }
}

StyledText bulleted list example

/*******************************************************************************
 * Copyright (c) 2000, 2006 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
//package org.eclipse.swt.snippets;
/* 
 * example snippet: StyledText bulleted list example
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 * 
 * @since 3.2
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.Bullet;
import org.eclipse.swt.custom.PaintObjectEvent;
import org.eclipse.swt.custom.PaintObjectListener;
import org.eclipse.swt.custom.ST;
import org.eclipse.swt.custom.StyleRange;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.GlyphMetrics;
import org.eclipse.swt.graphics.TextLayout;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class StyledTextBulletedList {
  public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("StyledText Bullet Example");
    shell.setLayout(new FillLayout());
    final StyledText styledText = new StyledText(shell, SWT.FULL_SELECTION | SWT.BORDER | SWT.WRAP
        | SWT.V_SCROLL);
    StringBuffer text = new StringBuffer();
    text.append("Here is StyledText with some bulleted lists:\n\n");
    for (int i = 0; i < 4; i++)
      text.append("Red Bullet List Item " + i + "\n");
    text.append("\n");
    for (int i = 0; i < 2; i++)
      text.append("Numbered List Item " + i + "\n");
    for (int i = 0; i < 4; i++)
      text.append("Sub List Item " + i + "\n");
    for (int i = 0; i < 2; i++)
      text.append("Numbered List Item " + (2 + i) + "\n");
    text.append("\n");
    for (int i = 0; i < 4; i++)
      text.append("Custom Draw List Item " + i + "\n");
    styledText.setText(text.toString());
    StyleRange style0 = new StyleRange();
    style0.metrics = new GlyphMetrics(0, 0, 40);
    style0.foreground = display.getSystemColor(SWT.COLOR_RED);
    Bullet bullet0 = new Bullet(style0);
    StyleRange style1 = new StyleRange();
    style1.metrics = new GlyphMetrics(0, 0, 50);
    style1.foreground = display.getSystemColor(SWT.COLOR_BLUE);
    Bullet bullet1 = new Bullet(ST.BULLET_NUMBER | ST.BULLET_TEXT, style1);
    bullet1.text = ".";
    StyleRange style2 = new StyleRange();
    style2.metrics = new GlyphMetrics(0, 0, 80);
    style2.foreground = display.getSystemColor(SWT.COLOR_GREEN);
    Bullet bullet2 = new Bullet(ST.BULLET_TEXT, style2);
    bullet2.text = "\u2713";
    StyleRange style3 = new StyleRange();
    style3.metrics = new GlyphMetrics(0, 0, 50);
    Bullet bullet3 = new Bullet(ST.BULLET_CUSTOM, style2);
    styledText.setLineBullet(2, 4, bullet0);
    styledText.setLineBullet(7, 2, bullet1);
    styledText.setLineBullet(9, 4, bullet2);
    styledText.setLineBullet(13, 2, bullet1);
    styledText.setLineBullet(16, 4, bullet3);
    styledText.addPaintObjectListener(new PaintObjectListener() {
      public void paintObject(PaintObjectEvent event) {
        Display display = event.display;
        StyleRange style = event.style;
        Font font = style.font;
        if (font == null)
          font = styledText.getFont();
        TextLayout layout = new TextLayout(display);
        layout.setAscent(event.ascent);
        layout.setDescent(event.descent);
        layout.setFont(font);
        layout.setText("\u2023 1." + event.bulletIndex + ")");
        layout.draw(event.gc, event.x + 10, event.y);
        layout.dispose();
      }
    });
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}

StyledText: use indent, alignment and justify

/*******************************************************************************
 * Copyright (c) 2000, 2005 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
//package org.eclipse.swt.snippets;
/*
 * SWT StyledText snippet: use indent, alignment and justify.
 * 
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 * 
 * @since 3.2
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class StyledTextIndentAlignmentJustify {
  static String text = "The first paragraph has an indentation of fifty pixels. Indentation is the amount of white space in front of the first line of a paragraph. If this paragraph wraps to several lines you should see the indentation only on the first line.\n\n"
      + "The second paragraph is center aligned. Alignment only works when the StyledText is using word wrap. Alignment, as with all other line attributes, can be set for the whole widget or just for a set of lines.\n\n"
      + "The third paragraph is justified. Like alignment, justify only works when the StyledText is using word wrap. If the paragraph wraps to several lines, the justification is performed on all lines but the last one.\n\n"
      + "The last paragraph is justified and right aligned. In this case, the alignment is only noticeable in the final line.";
  public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());
    StyledText styledText = new StyledText(shell, SWT.WRAP | SWT.BORDER);
    styledText.setText(text);
    styledText.setLineIndent(0, 1, 50);
    styledText.setLineAlignment(2, 1, SWT.CENTER);
    styledText.setLineJustify(4, 1, true);
    styledText.setLineAlignment(6, 1, SWT.RIGHT);
    styledText.setLineJustify(6, 1, true);
    shell.setSize(300, 400);
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}

Using Word Wrap

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class StyledTextWordWrap {
  public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    StyledText text1 = new StyledText(shell, SWT.V_SCROLL | SWT.BORDER);
    
    text1.setWordWrap(!text1.getWordWrap());
    
    text1.setBounds(10,10,100,100);
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }
}