StyledTextBulletedList.java Source code

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Here is the source code for StyledTextBulletedList.java

Source

/*******************************************************************************
 * 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();
    }
}