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java.lang.Object
   |
   +----java.io.Writer
           |
           +----bmsi.fsp.PScreen

Summary

public class  PScreen
     extends java.io.Writer
{
          // Constructors 1
     public PScreen(String, Socket) throws IOException;

          // Methods 15
     public void beep(int) throws IOException;
     public void close() throws IOException;
     public void copyArea(int, int, int, int, int, int);
     public void fill(int, int, int, int, char) throws IOException;
     public void flush() throws IOException;
     public int getCols();
     public Keyboard getKeyboard();
     public int getRows();
     public TermInfo getTermInfo();
     public void repaint(int, int, int, int);
     public void setAttr(char) throws IOException;
     public void setBufPos(int, int) throws IOException;
     public void setTerm(String) throws IOException;
     public void write(char[], int, int) throws IOException;
     public void write(int, int, int, String, char) throws IOException;

          // Inner Classes 1
     class PScreen.ScreenOutput
}

A physical TUI screen on an ASCII terminal. Communication with each screen is carried out by means of an InputStream and an OutputStream. A terminal type is used to lookup a TermInfo object to provide the byte strings which control various terminal functions and are sent by function keys on the terminal.

Author:

Stuart D. Gathman Copyright (C) 2000 Business Management Systems, Inc.

Constructors

· PScreen

Summary  |  Top

   public PScreen(String term, 
                  Socket sock)  throws IOException

   public void write(char[] buf, 
                     int pos, 
                     int len)  throws IOException

Overrides:

write in class Writer

   public void flush()  throws IOException

Overrides:

flush in class Writer

   public void setTerm(String term)  throws IOException

   public int getRows() 

   public int getCols() 

   public void fill(int x, 
                    int y, 
                    int w, 
                    int h, 
                    char c)  throws IOException

   public void copyArea(int x, 
                        int y, 
                        int w, 
                        int h, 
                        int dx, 
                        int dy) 

Copy an area of the screen to another position. Any insert/delete capabilities of the terminal are used to make this as efficient as possible. However, at a minimum the area left behind will need to be repainted. If the terminal has no insert/delete functions at all, the entire target area will need to be repainted as well. Most terminals will need some repainting because, for instance, they can insert/delete full lines, but not partial lines.

   public void repaint(int x, 
                       int y, 
                       int w, 
                       int h) 

   public void setBufPos(int x, 
                         int y)  throws IOException

   public void setAttr(char ch)  throws IOException

Set text attributes. There is no indication in terminfo of which attributes are cumulative. We assume that attributes defined with "enter_*_mode" and "exit_*_mode" are cumulative, whereas sgr is not. In addition, cookies are never cumulative. Terminfo doesn't tell us which attributes are cookies, but we will assume that if magic_cookie_glitch >= 0, then all attributes set with sgr are cookies. We make a bit mask of cookie attributes available to the caller. sgr is assumed to set any attributes not set with an enter_*_mode command. I.e., we try to use enter_*_mode first.

sgr0 must be defined to turn off any enter_*_mode attributes that have no corresponding exit_*_mode command. sgr0 should turn off *all* such cumulative attributes, but should not affect sgr.

Like AT&T, we keep track of the current mode attributes in CUR sgr_mode and only output the changes in vidattr(). Unlike AT&T, we can output cookies by setting A_MODIFIED. FIXME: no cookie support yet.

   public void write(int x, 
                     int y, 
                     int w, 
                     String s, 
                     char attr)  throws IOException

   public void beep(int type)  throws IOException

   public TermInfo getTermInfo() 

   public Keyboard getKeyboard() 

   public void close()  throws IOException

Overrides:

close in class Writer

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