Converts an AWT image to SWT (转载)

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 an AWT <code>MouseEvent</code> from a swt event.     * This method helps passing SWT mouse event to awt components.     * @param event The swt event.     * @return A AWT mouse event based on the given SWT event.     */    public static MouseEvent toAwtMouseEvent(org.eclipse.swt.events.MouseEvent event) {        int button = MouseEvent.NOBUTTON;        switch (event.button) {        case 1: button = MouseEvent.BUTTON1; break;        case 2: button = MouseEvent.BUTTON2; break;        case 3: button = MouseEvent.BUTTON3; break;        }        int modifiers = 0;        if ((event.stateMask & SWT.CTRL) != 0) {            modifiers |= InputEvent.CTRL_DOWN_MASK;        }        if ((event.stateMask & SWT.SHIFT) != 0) {            modifiers |= InputEvent.SHIFT_DOWN_MASK;        }        if ((event.stateMask & SWT.ALT) != 0) {            modifiers |= InputEvent.ALT_DOWN_MASK;        }        MouseEvent awtMouseEvent = new MouseEvent(DUMMY_PANEL, event.hashCode(),                event.time, modifiers, event.x, event.y, 1, false, button);        return awtMouseEvent;    }    /**     * Converts an AWT image to SWT.     *     * @param image  the image (<code>null</code> not permitted).     *     * @return Image data.     */    public static ImageData convertAWTImageToSWT(Image image) {        if (image == null) {            throw new IllegalArgumentException("Null 'image' argument.");        }        int w = image.getWidth(null);        int h = image.getHeight(null);        if (w == -1 || h == -1) {            return null;        }        BufferedImage bi = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);        Graphics g = bi.getGraphics();        g.drawImage(image, 0, 0, null);        g.dispose();        return convertToSWT(bi);    }    /**     * Converts a buffered image to SWT <code>ImageData</code>.     *     * @param bufferedImage  the buffered image (<code>null</code> not     *         permitted).     *     * @return The image data.     */    public static ImageData convertToSWT(BufferedImage bufferedImage) {        if (bufferedImage.getColorModel() instanceof DirectColorModel) {            DirectColorModel colorModel                    = (DirectColorModel) bufferedImage.getColorModel();            PaletteData palette = new PaletteData(colorModel.getRedMask(),                    colorModel.getGreenMask(), colorModel.getBlueMask());            ImageData data = new ImageData(bufferedImage.getWidth(),                    bufferedImage.getHeight(), colorModel.getPixelSize(),                    palette);            WritableRaster raster = bufferedImage.getRaster();            int[] pixelArray = new int[3];            for (int y = 0; y < data.height; y++) {                for (int x = 0; x < data.width; x++) {                    raster.getPixel(x, y, pixelArray);                    int pixel = palette.getPixel(new RGB(pixelArray[0],                            pixelArray[1], pixelArray[2]));                    data.setPixel(x, y, pixel);                }            }            return data;        }        else if (bufferedImage.getColorModel() instanceof IndexColorModel) {            IndexColorModel colorModel = (IndexColorModel)                    bufferedImage.getColorModel();            int size = colorModel.getMapSize();            byte[] reds = new byte[size];            byte[] greens = new byte[size];            byte[] blues = new byte[size];            colorModel.getReds(reds);            colorModel.getGreens(greens);            colorModel.getBlues(blues);            RGB[] rgbs = new RGB[size];            for (int i = 0; i < rgbs.length; i++) {                rgbs[i] = new RGB(reds[i] & 0xFF, greens[i] & 0xFF,                        blues[i] & 0xFF);            }            PaletteData palette = new PaletteData(rgbs);            ImageData data = new ImageData(bufferedImage.getWidth(),                    bufferedImage.getHeight(), colorModel.getPixelSize(),                    palette);            data.transparentPixel = colorModel.getTransparentPixel();            WritableRaster raster = bufferedImage.getRaster();            int[] pixelArray = new int[1];            for (int y = 0; y < data.height; y++) {                for (int x = 0; x < data.width; x++) {                    raster.getPixel(x, y, pixelArray);                    data.setPixel(x, y, pixelArray[0]);                }            }            return data;        }        return null;    }}

 

转载自：

http://www.java2s.com/Tutorial/Java/0280__SWT/ConvertsanAWTimagetoSWT.htm

 

SWT和AWT图像的互相转换 

 

http://dearseven.blog.163.com/blog/static/10053792220111073394537/

转载于:https://www.cnblogs.com/wuhenke/archive/2012/04/02/2430005.html