Create an awt font by converting as much information as possible from the provided swt Font. : SWT AWT Swing « SWT « Java Tutorial






/* 
 * JFreeChart : a free chart library for the Java(tm) platform
 * 
 *
 * (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * -------------
 * SWTUtils.java
 * -------------
 * (C) Copyright 2006, 2007, by Henry Proudhon and Contributors.
 *
 * Original Author:  Henry Proudhon (henry.proudhon AT ensmp.fr);
 * Contributor(s):   Rainer Blessing;
 *                   David Gilbert (david.gilbert@object-refinery.com);
 *                   Christoph Beck.
 *
 * Changes
 * -------
 * 01-Aug-2006 : New class (HP);
 * 16-Jan-2007 : Use FontData.getHeight() instead of direct field access (RB);
 * 31-Jan-2007 : Moved the dummy JPanel from SWTGraphics2D.java,
 *               added a new convert method for mouse events (HP);
 * 12-Jul-2007 : Improved the mouse event conversion with buttons
 *               and modifiers handling, patch sent by Christoph Beck (HP);
 * 27-Aug-2007 : Modified toAwtMouseEvent signature (HP);
 * 27-Nov-2007 : Moved convertToSWT() method from SWTGraphics2D and added
 *               convertAWTImageToSWT() (DG);
 * 01-Jul-2008 : Simplify AWT/SWT font style conversions (HP);
 *
 */


import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.DirectColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.WritableRaster;

import javax.swing.JPanel;

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.graphics.Rectangle;

/**
 * Utility class gathering some useful and general method.
 * Mainly convert forth and back graphical stuff between
 * awt and swt.
 */
public class SWTUtils {

    private final static String Az = "ABCpqr";

    /** A dummy JPanel used to provide font metrics. */
    protected static final JPanel DUMMY_PANEL = new JPanel();


    /**
     * Create an awt font by converting as much information
     * as possible from the provided swt <code>Font</code>.
     *
     * @param device The swt device to draw on (display or gc device).
     * @param font The swt font to convert.
     * @return An awt font converted from the provided swt font.
     */
    public static java.awt.Font toAwtFont(Device device, Font font) {
        FontData fontData = font.getFontData()[0];
        return toAwtFont(device, fontData, true);
    }

    /**
     * Creates an awt color instance to match the rgb values
     * of the specified swt color.
     *
     * @param color The swt color to match.
     * @return an awt color abject.
     */
    public static java.awt.Color toAwtColor(Color color) {
        return new java.awt.Color(color.getRed(), color.getGreen(),
                color.getBlue());
    }

    /**
     * Creates a swt color instance to match the rgb values
     * of the specified awt paint. For now, this method test
     * if the paint is a color and then return the adequate
     * swt color. Otherwise plain black is assumed.
     *
     * @param device The swt device to draw on (display or gc device).
     * @param paint The awt color to match.
     * @return a swt color object.
     */
    public static Color toSwtColor(Device device, java.awt.Paint paint) {
        java.awt.Color color;
        if (paint instanceof java.awt.Color) {
            color = (java.awt.Color) paint;
        }
        else {
            try {
                throw new Exception("only color is supported at present... "
                        + "setting paint to uniform black color");
            }
            catch (Exception e) {
                e.printStackTrace();
                color = new java.awt.Color(0, 0, 0);
            }
        }
        return new org.eclipse.swt.graphics.Color(device,
                color.getRed(), color.getGreen(), color.getBlue());
    }
}








17.118.SWT AWT Swing
17.118.1.Embeded Swing/AWT components to SWTEmbeded Swing/AWT components to SWT
17.118.2.Using AWT to paint inside SWTUsing AWT to paint inside SWT
17.118.3.Embed a JTable in SWT (no flicker)Embed a JTable in SWT (no flicker)
17.118.4.Create a FontData object which encapsulate the essential data to create a swt font.
17.118.5.Create an awt font by converting as much information as possible from the provided swt Font.
17.118.6.Create an awt font by converting as much information as possible from the provided swt FontData.
17.118.7.Creates a swt color instance to match the rgb values of the specified awt color. alpha channel is not supported.
17.118.8.Creates a swt color instance to match the rgb values of the specified awt paint.
17.118.9.Creates an AWT MouseEvent from a swt event.
17.118.10.Creates an awt color instance to match the rgb values of the specified swt color.
17.118.11.Draw Graphics2D stuff on a swt composite
17.118.12.Returns an AWT point with the same coordinates as the specified SWT point.
17.118.13.Returns an SWT point with the same coordinates as the specified AWT point (rounded to integer values).
17.118.14.Returns an SWT point with the same coordinates as the specified AWT point.
17.118.15.Transform a swt Rectangle instance into an AWT Rectangle.
17.118.16.Transform an awt Rectangle2d instance into a swt Rectangle2d.