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package ij.plugin;
import ij.*;
import ij.process.*;
import ij.gui.*;
import java.awt.*;
import ij.io.*;
import java.net.URL;
import java.awt.image.*;
/** This plugin implements the Help/About ImageJ command by opening
the about.jpg in ij.jar, scaling it 400% and adding some text. */
public class AboutBox implements PlugIn {
static final int SMALL_FONT=14, LARGE_FONT=30;
public void run(String arg) {
System.gc();
int lines = 7;
String[] text = new String[lines];
text[0] = "ImageJ "+ImageJ.VERSION+ImageJ.BUILD;
text[1] = "Wayne Rasband";
text[2] = "National Institutes of Health, USA";
text[3] = IJ.URL;
text[4] = "Java "+System.getProperty("java.version")+(IJ.is64Bit()?" (64-bit)":" (32-bit)");
text[5] = IJ.freeMemory();
text[6] = "ImageJ is in the public domain";
ImageProcessor ip = null;
ImageJ ij = IJ.getInstance();
URL url = ij .getClass() .getResource("/about.jpg");
if (url!=null) {
Image img = null;
try {img = ij.createImage((ImageProducer)url.getContent());}
catch(Exception e) {}
if (img!=null) {
ImagePlus imp = new ImagePlus("", img);
ip = imp.getProcessor();
}
}
if (ip==null)
ip = new ColorProcessor(55,45);
ip = ip.resize(ip.getWidth()*4, ip.getHeight()*4);
ip.setFont(new Font("SansSerif", Font.PLAIN, LARGE_FONT));
ip.setAntialiasedText(true);
int[] widths = new int[lines];
widths[0] = ip.getStringWidth(text[0]);
ip.setFont(new Font("SansSerif", Font.PLAIN, SMALL_FONT));
for (int i=1; i<lines-1; i++)
widths[i] = ip.getStringWidth(text[i]);
int max = 0;
for (int i=0; i<lines-1; i++)
if (widths[i]>max)
max = widths[i];
ip.setColor(new Color(255,255, 140));
ip.setFont(new Font("SansSerif", Font.PLAIN, LARGE_FONT));
int y = 45;
ip.drawString(text[0], x(text[0],ip,max), y);
ip.setFont(new Font("SansSerif", Font.PLAIN, SMALL_FONT));
y += 30;
ip.drawString(text[1], x(text[1],ip,max), y);
y += 18;
ip.drawString(text[2], x(text[2],ip,max), y);
y += 18;
ip.drawString(text[3], x(text[3],ip,max), y);
y += 18;
ip.drawString(text[4], x(text[4],ip,max), y);
if (IJ.maxMemory()>0L) {
y += 18;
ip.drawString(text[5], x(text[5],ip,max), y);
}
ip.drawString(text[6], ip.getWidth()-ip.getStringWidth(text[6])-10, ip.getHeight()-3);
ImageWindow.centerNextImage();
ImagePlus imp = new ImagePlus("About ImageJ", ip);
String info = text[0] +"\n" + text[4] +"\n" + text[5];
imp.setProperty("Info", info);
imp.show();
}
int x(String text, ImageProcessor ip, int max) {
return ip.getWidth() - max + (max - ip.getStringWidth(text))/2 - 10;
}
}
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