rawimage.java

ErGo是一个很早的Java通用围棋服务器(IGS/NNGS)客户端程序。有全部源码和文档

package ergo.ui;

// $Id: RawImage.java,v 1.1 1999/08/15 01:40:29 sigue Exp $

/*
 *  Copyright (C) 1999  Carl L. Gay and Antranig M. Basman.
 *  See the file copyright.txt, distributed with this software,
 *  for further information.
 */

import java.awt.image.MemoryImageSource;

/**
 * RawImage is a "bare image" class, designed for maximum speed and convenience.
 * It is basically a glorified wrapper for int[].
 */
class RawImage {
  int[] data;
  int width, height;
  private int xorig, yorig;
  private MemoryImageSource mis;

  public RawImage() {
    width = 0;
    height = 0;
  }

  public RawImage (int width1, int height1) {
    width = width1;
    height = height1;
    data = new int[width * height];
    init();
  }

  public RawImage (int[] data1, int width1) {
    data = data1;
    width = width1;
    height = data.length / width;
    init();
  }

  public RawImage reinit (int width1, int height1) {
    if (width != width1 || height != height1) {
      width = width1;
      height = height1;
      data = new int[width * height];
      init();
    }
    else
      blank(0);
    return this;
  }

  public RawImage bclone () {
    return new RawImage(width, height);
  }

  private void init () {
    mis = new MemoryImageSource(width, height, data, 0, width);
    mis.setAnimated(true);
    mis.setFullBufferUpdates(true);
  }

  public void setorig (int xorig1, int yorig1) {
    xorig = xorig1;
    yorig = yorig1;
  }

  public void setpixel (int color, int x1, int y1) {
    int x2 = x1 + xorig;
    int y2 = y1 + yorig;
    if (x2 < 0) x2 = 0; else if (x2 >= width) x2 = width - 1;
    if (y2 < 0) y2 = 0; else if (y2 >= height) y2 = height - 1;
    data[x2 + y2 * width] = color;
  }

  public void setband (int color, int xl, int xr, int y1) {
    int xl1 = xl + xorig;
    int xr1 = xr + xorig;
    int y2 = y1 + yorig;

    if (xl1 < 0) xl1 = 0; else if (xl1 >= width) xl1 = width - 1;
    if (xr1 < 0) xr1 = 0; else if (xr1 >= width) xr1 = width - 1;
    if (y2 < 0)   y2 = 0; else if (y2 >= height)  y2 = height - 1;

    for (int i = xl1; i <= xr1; ++i) {
      data[i + y2 * width] = color;
    }
  }

  public RawImage blank (int color) {
    int length = data.length;
    for (int i = 0; i < length; ++i) {
      data[i] = color;
    }
    return this;
  }

  public MemoryImageSource mis () {
    return mis;
  }

  public String toString () {
    String r = "";
    for (int i = 0; i < height; ++i) {
      for (int j = 0; j < width; ++j) {
	r += (data[j + width * i] & 0xff)+" ";
      }
      r += "\n";
    }
    return r;
  }
} // end class RawImage