SWT Image 和AWT BufferedImage之间的转换

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已于 2023-06-27 17:05:42 修改 · 462 阅读

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#java #算法 #开发语言

于 2023-06-27 16:29:51 首次发布

这篇文章提供了一种在Java中将SWT的ImageData对象转换为AWT的BufferedImage，以及反向转换的方法。代码示例详细展示了如何处理直接色模式和索引色模式的图像数据，并考虑了透明像素的情况。

ImageData和BufferedImage之间的相互转换

imageDayta 转 Image 可以参考https://blog.youkuaiyun.com/jg_csdn/article/details/131420587

/*
 * example snippet: convert between SWT Image and AWT BufferedImage
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.DirectColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.WritableRaster;

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
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;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;

public class Snippet156 {

  static BufferedImage convertToAWT(ImageData data) {
    ColorModel colorModel = null;
    PaletteData palette = data.palette;
    if (palette.isDirect) {
      colorModel = new DirectColorModel(data.depth, palette.redMask,
          palette.greenMask, palette.blueMask);
      BufferedImage bufferedImage = new BufferedImage(colorModel,
          colorModel.createCompatibleWritableRaster(data.width,
              data.height), false, null);
      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++) {
          int pixel = data.getPixel(x, y);
          RGB rgb = palette.getRGB(pixel);
          pixelArray[0] = rgb.red;
          pixelArray[1] = rgb.green;
          pixelArray[2] = rgb.blue;
          raster.setPixels(x, y, 1, 1, pixelArray);
        }
      }
      return bufferedImage;
    } else {
      RGB[] rgbs = palette.getRGBs();
      byte[] red = new by