Transform a swt Rectangle instance into an AWT Rectangle. : 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();



    /**
     * Creates a swt color instance to match the rgb values
     * of the specified awt color. alpha channel is not supported.
     * Note that the dispose method will need to be called on the
     * returned object.
     *
     * @param device The swt device to draw on (display or gc device).
     * @param color The awt color to match.
     * @return a swt color object.
     */
    public static Color toSwtColor(Device device, java.awt.Color color) {
        return new org.eclipse.swt.graphics.Color(device,
                color.getRed(), color.getGreen(), color.getBlue());
    }

    /**
     * Transform an awt Rectangle2d instance into a swt one.
     * The coordinates are rounded to integer for the swt object.
     * @param rect2d The awt rectangle to map.
     * @return an swt <code>Rectangle</code> object.
     */
    public static Rectangle toSwtRectangle(Rectangle2D rect2d) {
        return new Rectangle(
                (int) Math.round(rect2d.getMinX()),
                (int) Math.round(rect2d.getMinY()),
                (int) Math.round(rect2d.getWidth()),
                (int) Math.round(rect2d.getHeight()));
    }

    /**
     * Transform a swt Rectangle instance into an awt one.
     * @param rect the swt <code>Rectangle</code>
     * @return a Rectangle2D.Double instance with
     * the eappropriate location and size.
     */
    public static Rectangle2D toAwtRectangle(Rectangle rect) {
        Rectangle2D rect2d = new Rectangle2D.Double();
        rect2d.setRect(rect.x, rect.y, rect.width, rect.height);
        return rect2d;
    }

    /**
     * Returns an AWT point with the same coordinates as the specified
     * SWT point.
     *
     * @param p  the SWT point (<code>null</code> not permitted).
     *
     * @return An AWT point with the same coordinates as <code>p</code>.
     *
     * @see #toSwtPoint(java.awt.Point)
     */
    public static Point2D toAwtPoint(Point p) {
        return new java.awt.Point(p.x, p.y);
    }

    /**
     * Returns an SWT point with the same coordinates as the specified
     * AWT point.
     *
     * @param p  the AWT point (<code>null</code> not permitted).
     *
     * @return An SWT point with the same coordinates as <code>p</code>.
     *
     * @see #toAwtPoint(Point)
     */
    public static Point toSwtPoint(java.awt.Point p) {
        return new Point(p.x, p.y);
    }

    /**
     * Returns an SWT point with the same coordinates as the specified AWT
     * point (rounded to integer values).
     *
     * @param p  the AWT point (<code>null</code> not permitted).
     *
     * @return An SWT point with the same coordinates as <code>p</code>.
     *
     * @see #toAwtPoint(Point)
     */
    public static Point toSwtPoint(java.awt.geom.Point2D p) {
        return new Point((int) Math.round(p.getX()),
                (int) Math.round(p.getY()));
    }


}








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.