Draw a box around text : StyledText « SWT « Java Tutorial

Draw a box around text
 * 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;
 * StyledText snippet: Draw a box around text.
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;

public class TextAroundBox {
  static String SEARCH_STRING = "box";

  public static void main(String[] args) {
    final Display display = new Display();
    final Color RED = display.getSystemColor(SWT.COLOR_RED);
    Shell shell = new Shell(display);
    shell.setBounds(10, 10, 250, 250);
    final StyledText text = new StyledText(shell, SWT.NONE);
    text.setBounds(10, 10, 200, 200);
    text.addListener(SWT.Paint, new Listener() {
      public void handleEvent(Event event) {
        String contents = text.getText();
        int stringWidth = event.gc.stringExtent(SEARCH_STRING).x;
        int lineHeight = text.getLineHeight();
        int index = contents.indexOf(SEARCH_STRING);
        while (index != -1) {
          Point topLeft = text.getLocationAtOffset(index);
          event.gc.drawRectangle(topLeft.x - 1, topLeft.y, stringWidth + 1, lineHeight - 1);
          index = contents.indexOf(SEARCH_STRING, index + 1);
        .setText("This demonstrates drawing a box\naround every occurrence of the word\nbox in the StyledText");
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())

17.42.1.Creating a StyledText Widget
17.42.2.Create a StyledText that scrolls vertically, wraps text, and displays a border:Create a StyledText that scrolls vertically, wraps text, and displays a border:
17.42.3.Using the ClipboardUsing the Clipboard
17.42.4.Draw a box around textDraw a box around text
17.42.5.StyledText: embed imagesStyledText: embed images
17.42.6.StyledText: use gradient backgroundStyledText: use gradient background
17.42.7.StyledText: embed controlsStyledText: embed controls
17.42.8.Getting Statistics: Caret Offset, Total Lines of Text, Total Characters and Current LineGetting Statistics: Caret Offset, Total Lines of Text, Total Characters and Current Line
17.42.9.Print StyledText outPrint StyledText out
17.42.10.Print to the default printer in a separate thread
17.42.11.Set page format for printing
17.42.12.Make a StyledText read-only
17.42.13.Limit the number of characters that the StyledText acceptsLimit the number of characters that the StyledText accepts
17.42.14.Replace Text RangeReplace Text Range
17.42.15.Understanding the Repercussions
17.42.16.A simple editorA simple editor