gistfile1.java

import ij.IJ;
import ij.ImagePlus;

import ij.io.FileInfo;
import ij.io.OpenDialog;

import ij.plugin.PlugIn;

import ij.process.ByteProcessor;

import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

/**
 * This is a template for an I/O plugin.
 *
 * Since plugins do not have return values, the only way to let
 * ImageJ handle the display of the resulting window (or not, if
 * we're in batch mode) is to extend ImagePlus.
 */
public class Bare_IO_PlugIn extends ImagePlus implements PlugIn {
	/**
	 * This method gets called by ImageJ / Fiji.
	 *
	 * @param arg is supposed to be a path if it is not empty
	 */
	public void run(String path) {
		boolean needToShow = false;

		// get the file
		File file;
		if (path == null || path.equals("")) {
			OpenDialog dialog = new OpenDialog("Open .serialized file", null);
			if (dialog.getDirectory() == null)
				return; // canceled
			file = new File(dialog.getDirectory(), dialog.getFileName());

			/*
			 * Since no path was passed, assume that it was run interactively
			 * rather than from HandleExtraFileTypes
			 */
			needToShow = true;
		}
		else
			file = new File(path);

		// read the file (in this example, a 256x256 8-bit grayscale raw image)
		int width = 256, height = 256;
		byte[] pixels = new byte[width * height];
		try {
			DataInputStream input = new DataInputStream(new FileInputStream(file));
			input.readFully(pixels);
		} catch (IOException e) {
			IJ.error("Could not read " + file.getAbsolutePath() + ":\n" + e.getMessage());
			return;
		}
		ByteProcessor processor = new ByteProcessor(width, height, pixels, null);

		// now set the contents of the ImagePlus
		setProcessor(processor);
		setTitle(file.getName());

		setProperty("Info", "This text is shown in Image>Show Info...");

		// setting the FileInfo is optional
		FileInfo info = new FileInfo();
		info.fileName = file.getAbsolutePath();
		info.width = width;
		info.height = height;
		info.nImages = 1;
		info.fileFormat = FileInfo.RAW;
		setFileInfo(info);

		if (needToShow)
			show();
	}
}