vbtkit/src/lego/SplitterVBT.i3

 Copyright (C) 1992, Digital Equipment Corporation                         
 All rights reserved.                                                      
 See the file COPYRIGHT for a full description.                            
                                                                           
 Last modified on Sat Feb  6 18:42:14 PST 1993 by meehan 
      modified on Tue Feb  2 14:30:16 PST 1993 by mhb    
      modified on Tue Jun 16 13:08:13 PDT 1992 by muller 
 modified on Fri Mar 27 02:12:01 1992 by steveg
 modified on Mon Jun 18 16:11:27 PDT 1990 by birrell 

<* PRAGMA LL *>
<* PRAGMA SUBTYPE *>

 A SplitterVBT.T is a parent window that partitions its screen
   into a row or column of children windows, depending on the
   {\em axis} of the split, with adjusting bars between all
   children.  The adjusting bars allow the user to adjust the
   allocation of screen real estate among the splitter's
   children, subject to the size constraints of each child.


   A SplitterVBT is subclass of an HVSplit, but through the
   MultiSpit interface, only the ``interesting'' children of the
   HVSplit are exposed.  That is, adjusting bars are never
   exposed to the client: they are inserted automatically when a
   new child is added, and removed as necessary.  To access all
   children, including the adjusting bars, use the Split
   interface instead.  The HVSplit routines Move, Adjust,
   FeasibleRange, AvailSize, and AxisOf can be used. 


INTERFACE SplitterVBT;

IMPORT Axis, HVSplit, PaintOp, Pixmap;

TYPE
  <* SUBTYPE T <: MultiSplit.T *>
  T <: Public;
  Public = HVSplit.T OBJECT
           METHODS
             <* LL <= VBT.mu *>
             init (hv      : Axis.T;
                   size    : REAL      := DefaultSize;
                   op      : PaintOp.T := PaintOp.BgFg;
                   txt     : Pixmap.T  := Pixmap.Gray;
                   saveBits: BOOLEAN   := FALSE;
                   parlim  : INTEGER   := -1            ): T;
           END;

 The call v.init(...) initializes v as a SplitterVBT with
   no children.  See the HVSplit interface for an explanation
   of parameters saveBits and parlim.  See the HVBar
   interface for an explanation of the size, op, and txt
   parameters. 


CONST
  DefaultSize = 2.0;

END SplitterVBT.