/*
* 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());
}
}
