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java.lang.Object
   |
   +----bmsi.fsp.PWinMgr

Summary

public class  PWinMgr
     extends java.lang.Object
{
          // Fields 4
     int cols;
     char[] mask;
     boolean[] onTop;
     PScreen ps;

          // Constructors 1
     public PWinMgr(PScreen);

          // Methods 11
     synchronized int addWin(PWin);
     synchronized PWin delWin(int);
     public Rectangle getScreenRect();
     public PWin getWin(int);
     boolean isOnTop(int);
     synchronized void repaint(Rectangle);
     void reset(Rectangle);
     void set(int, int, int, int, int);
     synchronized void sync() throws IOException;
     void toBack(PWin);
     void toFront(PWin);
}

Coordinate PWin windows for a terminal screen.

Author:

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

Fields

· ps	Summary  |  Top

   PScreen ps

   boolean[] onTop

Track which windows can skip masking logic because they are not obscured by any other window.

   char[] mask

Track which window owns each cell of the screen.

   int cols

Constructors

· PWinMgr

Summary  |  Top

   public PWinMgr(PScreen ps) 

Create a PWin manager.

Parameter	Description
ps	the physical screen the windows are displayed on

   public Rectangle getScreenRect() 

   synchronized int addWin(PWin w) 

Register a PWin with this manager.

Parameter	Description
w	the PWin to register

Returns:

the win id

   public PWin getWin(int id) 

   synchronized PWin delWin(int id) 

Unregister a PWin from this manager.

Parameter	Description
id	the win id of the PWin to unregister.

Returns:

the PWin removed

   void reset(Rectangle r) 

Recompute the ownership mask for the area covered by a PWin.

   synchronized void repaint(Rectangle r) 

Redraw a section of the screen.

   synchronized void sync()  throws IOException

   void set(int x, 
            int y, 
            int w, 
            int h, 
            int id) 

   boolean isOnTop(int id) 

A window is onTop if it is not obscured by any other window. This is set to true when PWin.set() is called. It is set to false when a cell owned by a window is overwritten by another window's set().

   void toFront(PWin w) 

   void toBack(PWin w) 

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