vt320.java

java 平台 telnet 繁体中文版

/*
 * This file is part of "The Java Telnet Application".
 *
 * This is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * "The Java Telnet Application" is distributed in the hope that it will be
 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this software; see the file COPYING.  If not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

package de.mud.terminal;

import java.awt.Font;
import java.awt.Dimension;
import java.awt.Event;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import java.util.Properties;

/**
 * Implementation of a VT terminal emulation plus ANSI compatible.
 * <P>
 * <B>Maintainer:</B> Marcus Mei遪er
 *
 * @version $Id: vt320.java,v 2.50 2001/02/27 17:55:46 marcus Exp $
 * @author  Matthias L. Jugel, Marcus Mei遪er
 */
public abstract class vt320 extends VDU implements KeyListener {
  /** The current version id tag.<P>
   * $Id: vt320.java,v 2.50 2001/02/27 17:55:46 marcus Exp $
   */
  public final static String ID = "$Id: vt320.java,v 2.50 2001/02/27 17:55:46 marcus Exp $";

  /** the debug level */
  private final static int debug = 0;

  /**
   * Write an answer back to the remote host. This is needed to be able to
   * send terminal answers requests like status and type information.
   * @param b the array of bytes to be sent
   */
  protected abstract void write(byte[] b);

  /**
   * Play the beep sound ...
   */
  protected void beep() { /* do nothing by default */ }

  /**
   * Put string at current cursor position. Moves cursor
   * according to the String. Does NOT wrap.
   * @param s the string
   */
  public void putString(String s) {
    int  i,len=s.length();
    // System.err.println("'"+s+"'");

    if(len > 0) {
      markLine(R,1);
      for (i=0;i<len;i++) {
        // System.err.print(s.charAt(i)+"("+(int)s.charAt(i)+")");
        putChar(s.charAt(i),false);
      }
      setCursorPosition(C, R);
      redraw();
    }
  }

  protected void sendTelnetCommand(byte cmd) { }

  /**
   * Create a new vt320 terminal and intialize it with useful settings.
   * @param width the width of the character screen
   * @param height the amount of rows on screen
   * @param font the font to be used for rendering characters
   */
  public vt320(int width, int height, Font font) {
    super(width, height, font);

    setVMS(false);
    setIBMCharset(false);
    // setTerminalID("vt320");
    setTerminalID("ANSI");
    setBufferSize(100);
    setBorder(2, false);

    int nw = getColumns();
    if (nw<132) nw=132; //catch possible later 132/80 resizes
    Tabs = new byte[nw];
    for (int i=0;i<nw;i+=8) {
      Tabs[i]=1;
    }

    int nh = getRows();
    HTabs = new byte[nh];
    for (int i=0;i<nh;i+=8) { // I don't know whether the default vertical tab is 8
      HTabs[i]=1;
    }

    /* top row of numpad */
    PF1  = "\u001bOP";
    PF2  = "\u001bOQ";
    PF3  = "\u001bOR";
    PF4  = "\u001bOS";

    /* the 3x2 keyblock on PC keyboards */
    Insert = new String[4];
    Remove = new String[4];
    KeyHome = new String[4];
    KeyEnd = new String[4];
    NextScn = new String[4];
    PrevScn = new String[4];
    Escape = new String[4];
    BackSpace = new String[4];
    TabKey = new String[4];
    Insert[0]  = Insert[1]  = Insert[2]  = Insert[3]  = "\u001b[2~";
    Remove[0]  = Remove[1]  = Remove[2]  = Remove[3]  = "\u001b[3~";
    PrevScn[0] = PrevScn[1] = PrevScn[2] = PrevScn[3] = "\u001b[5~";
    NextScn[0] = NextScn[1] = NextScn[2] = NextScn[3] = "\u001b[6~";
    // KeyHome[0] = KeyHome[1] = KeyHome[2] = KeyHome[3] = "\u001b[H";
    KeyHome[0] = KeyHome[1] = KeyHome[2] = KeyHome[3] = "\u001b[1~";
    // KeyEnd[0]  = KeyEnd[1]  = KeyEnd[2]  = KeyEnd[3]  = "\u001b[F";
    KeyEnd[0]  = KeyEnd[1]  = KeyEnd[2]  = KeyEnd[3]  = "\u001b[4~";
    Escape[0]  = Escape[1]  = Escape[2]  = Escape[3]  = "\u001b";
    BackSpace[0]  = BackSpace[1]  = BackSpace[2]  = BackSpace[3]  = "\b";

    /* some more VT100 keys */
    Find   = "\u001b[1~";
    Select = "\u001b[4~";
    Help   = "\u001b[28~";
    Do     = "\u001b[29~";

    FunctionKey = new String[21];
    FunctionKey[0]= "";
    FunctionKey[1]= PF1;
    FunctionKey[2]= PF2;
    FunctionKey[3]= PF3;
    FunctionKey[4]= PF4;
    /* following are defined differently for vt220 / vt132 ... */
    FunctionKey[5]= "\u001b[15~";
    FunctionKey[6]= "\u001b[17~";
    FunctionKey[7]= "\u001b[18~";
    FunctionKey[8]= "\u001b[19~";
    FunctionKey[9]= "\u001b[20~";
    FunctionKey[10]= "\u001b[21~";
    FunctionKey[11]= "\u001b[23~";
    FunctionKey[12]= "\u001b[24~";
    FunctionKey[13]= "\u001b[25~";
    FunctionKey[14]= "\u001b[26~";
    FunctionKey[15]= Help;
    FunctionKey[16]= Do;
    FunctionKey[17]= "\u001b[31~";
    FunctionKey[18]= "\u001b[32~";
    FunctionKey[19]= "\u001b[33~";
    FunctionKey[20]= "\u001b[34~";

    FunctionKeyShift = new String[21];
    FunctionKeyAlt = new String[21];
    FunctionKeyCtrl = new String[21];

    for (int i=0;i<20;i++) {
      FunctionKeyShift[i]="";
      FunctionKeyAlt[i]="";
      FunctionKeyCtrl[i]="";
    }
    FunctionKeyShift[15] = Find;
    FunctionKeyShift[16] = Select;


    TabKey[0]  = "\u0009";
    // TabKey[1]  = "\u001bOP\u0009";
    TabKey[1]  = "\u001b[Z";
    TabKey[2]  = TabKey[3] = "";

    KeyUp      = new String[4];
    KeyUp[0]   = "\u001b[A";
    KeyDown    = new String[4];
    KeyDown[0] = "\u001b[B";
    KeyRight   = new String[4];
    KeyRight[0]= "\u001b[C";
    KeyLeft    = new String[4];
    KeyLeft[0] = "\u001b[D";
    Numpad = new String[10];
    Numpad[0]  = "\u001bOp";
    Numpad[1]  = "\u001bOq";
    Numpad[2]  = "\u001bOr";
    Numpad[3]  = "\u001bOs";
    Numpad[4]  = "\u001bOt";
    Numpad[5]  = "\u001bOu";
    Numpad[6]  = "\u001bOv";
    Numpad[7]  = "\u001bOw";
    Numpad[8]  = "\u001bOx";
    Numpad[9]  = "\u001bOy";
    KPMinus  = "\u001bOm";
    KPComma  = "\u001bOl";
    KPPeriod  = "\u001bOn";
    KPEnter  = "\u001bOM";

    /* ... */

    addKeyListener(this);

    /* I don't think we want that here ... */
    addMouseListener(new MouseAdapter() {
      public void mouseEntered(MouseEvent evt) {
        requestFocus();
      }
      public void mousePressed(MouseEvent evt) {
        if (mouserpt==0)
          return;
        int mods = evt.getModifiers();
        mousebut = 3;
        if ((mods & 16)==16) mousebut=0;
        if ((mods &  8)==8 ) mousebut=1;
        if ((mods &  4)==4 ) mousebut=2;


        int mousecode;
        if (mouserpt == 9)      /* X10 Mouse */
            mousecode = 0x20|mousebut;
        else                    /* normal xterm mouse reporting */
            mousecode = mousebut|0x20|((mods & 7)<<2);

        java.awt.Point pos = mouseGetPos(evt.getPoint());
        byte b[] = new byte[6];

        b[0] = 27; b[1] = (byte)'['; b[2] = (byte)'M';
        b[3] = (byte)mousecode;
        b[4] = (byte) (0x20 + pos.x + 1);
        b[5] = (byte) (0x20 + pos.y + 1);

        write(b);
      }
      public void mouseReleased(MouseEvent evt) {
        if (mouserpt==0)
          return;
        java.awt.Point pos = mouseGetPos(evt.getPoint());
        int mods = evt.getModifiers();


        /* problem is tht modifiers still have the released button set in them.
        mousebut = 3;
        if ((mods & 16)==16) mousebut=0;
        if ((mods &  8)==8 ) mousebut=1;
        if ((mods &  4)==4 ) mousebut=2;
         */

        int mousecode;
        if (mouserpt == 9)
            mousecode = 0x20+mousebut;  /* same as press? appears so. */
        else
            mousecode = '#';

        byte b[] = new byte[6];
        b[0] = 27; b[1] = (byte)'['; b[2] = (byte)'M';
        b[3] = (byte)mousecode;
        b[4] = (byte) (0x20 + pos.x + 1);
        b[5] = (byte) (0x20 + pos.y + 1);
        write(b);
        mousebut = 0;
      }
    });

  }

  /**
   * Create a new terminal emulation with specific width and height.
   * @param width the width of the character screen
   * @param height the amount of rows on screen
   */
  public vt320(int width, int height) {
    this(width, height, new Font("Monospaced", Font.PLAIN, 20));
    // this(width, height, new Font("穝灿