# 
# $Date: 1999/12/15 22:37:41 $
# $Id: NEWS,v 1.3 1999/12/15 22:37:41 danny Exp $

Xbae Library version 4.7.2
--------------------------

See the INSTALL file for installation procedure.

Comments, questions, bugs & postcards can be directed to the
LessTif mailing list <lesstif@lesstif.org> .

Postcards will earn you a spot in the manual page.  Email me for the
address to which to send it.

For those of you not already on the mailing list and would like to subscribe,
send mail to

        xbae-subscribe@lists.frogdream.com

You should also visit the web page at:

	http://www.xbae.syd.net.au

Documentation
-------------

Documentation is provided in the doc/ subdirectory.  Please read the
Xbae-FAQ before contacting the maintainer or mailing list unless you
are willing to receive some nasty (or no) replies!  I will be ignoring
any questions that are in the FAQ so if you don't receive a reply within
a few days, you'll know where to look.

The online manual pages (src/XbaeMatrix.man, src/XbaeCaption.man and
src/XbaeInput.man) are also provided in PostScript format in
doc/matrix.ps, doc/caption.ps and doc/input.ps which I urge you to
print out and keep handy as most questions can be answered from these.

The online XbaeMatrix(3) man page suffers from a very large table,
spread over a few pages which causes problems with most versions of
nroff, groff, etc.  If this is the case for you, you will need to use
the PostScript version for the resource table.  If you can help out in
formatting the table so it works in the online manual page, please
contact me.


What the widgets do:
--------------------

XbaeMatrix:

XbaeMatrix is a Motif widget which presents an editable array of
string data to the user in a scrollable table similar to a
spreadsheet. The rows and columns of the Matrix may optionally be
labeled. Also, a number of "fixed" and "trailing fixed" rows or
columns may be specified - these behave similarly to the labels. While
XbaeMatrix looks and acts like a grid oF XmText widgets, it
actually contains only one XmText.  This means that XbaeMatrix
widgets with hundreds or thousands of rows have much less overhead
than they would if they used an XmText for each cell. XbaeMatrix
has callbacks for doing field validation and customizing traversal. It
allows cells to be assigned independent colors.  It allows rows,
columns and regions of cells to be selected or highlighted.  The
matrix can be dynamically grown or shrunk by adding and deleting rows
and columns at any position.  The widget has many resources to allow
individual customisation and can be made to look and behave like an
extended list widget with added functionality.  Pixmaps (both colour
xpm and standard bitmaps) can be displayed in individual cells with
the callbacks available in the widget.
   

XbaeCaption:

XbaeCaption is a simple Motif manager widget used to associate an
XmLabel (caption) with it's single child. The label may be either an
XmString or Pixmap and can be displayed in any one of twelve positions
around the perimeter of the child. XbaeCaption's geometry management
technique is to simply "shrink wrap" it's child and display the
caption alongside it.  By using XbaeCaption with an XmFrame child,
groups of related widgets can be labeled similarly to the IBM CUA
"Group Box", but with more flexibility.  XbaeCaption is also useful
for associating labels with individual XmText widgets.


XbaeInput

XbaeInput is a subclassed from the XmText widget and allows keystrokes
to be validated as well as the final string.  It is very handy for
restricting user input.



Changes in 4.7.2
----------------
* CELL_WIDGETS fixes by Linas Vesptas.

* CELL_WIDGETS functionality extended with XbaeMatrixGetCellWidget()
  which you can use to figure out whether a cell already has a
  widget.

* CELL_WIDGETS now enabled by default, and somewhat implemented.

Changes in 4.7.1
----------------
* Maintenance is transferred to the LessTif core team.

* Configuration based on automake, autoconf, libtool is added, this
  is the preferred environment for the current (new) maintainers.

Changes in 4.7
----------------

* Swapped out the XmTextField widget to use the XmText widget to enable
  multi line rows and the like - thanks to Mark Gibson (magibso@uswest.com)
  for his methods in achieving this goal.

* Added a patch from Philip Aston (philipa@parallax.co.uk) that
  reportedly speeds up things by 300% when using pixmaps.  Acheivable
  by specifying the width, height and depth of a pixmap to an
  XbaeMatrixDrawCellCallbackStruct.

* Another patch from Philip provided correct behaviour when setting
  the XmNsensitive resource on ancestors of the matrix widget.

* "Ceklosky" (b1dqza9@is200005.bell-atl.com) reported a memory leak
  when the widget was destroyed.  This came about from highlighted-
  cells not being freed.

* Donato Petrino (dp@rtsffm.com) provided an efficient way of detecting
  if partially displayed rows were visible

* He also supplied a patch that corrected the placement of the text
  widget if the user first clicked on an editable fixed row.

* Scott Harrington (scotth@ibl.bm) figured out that xbaeComputeSize()
  should not add space for scrollbars if the displayPolicy is set to
  XmDISPLAY_NONE.  He also provided a patch.

* Made a small change to a conditional in Matrix.c that prevents
  an erroneous warning message being displayed.  Thanks to Curt
  Malouin (cmalouin@ford.com) for that one.

* Merged two patches from Jay Schmidgall (Jay.Schmidgall@Sungardss.com)
  one fixed a slight error in the drawing of scrollbar heights/widths
  while the other fixed some casting problems under Solaris [they
  must be getting stricter on this ANSI C thing!]

* Brian McAllister (brian@hotrats.mit.edu) provided a fix for compilation
  of Xbae on Dec Alphas

* Jay Schmidgall continued work on the widget, providing:

o Corrected some bugs with row/column shadow drawing and clearing
o Corrected some bugs related to not having row/column labels
o Changed the way shadows are drawn to be the correct way,
  i.e., mine. That is, XmSHADOW_OUT results in an outset shadow.
  Note: this may have implications for Motif 1.1 compatibility,
  since type isn't passed along to _XmDrawShadow()
(ED: Since 1.1 is no longer supported, this isn't an issue!)
o Changed the grid type enumeration to be more explicit
o Made the unneeded grid types deprecated, which will result
  in runtime warning messages
o Added grid types XmGRID_ROW_LINE and XmGRID_COLUMN_LINE
  (this was suprisingly simple :)
o Modified the matrix resource declaration to come into line
  with grid/shadow changes
o Modified the choice example program to reflect these changes
o Modified the man page to reflect these changes

*** NOTE ************************************************************
  The new types for gridType are:
  enum
  {
      XmGRID_NONE             = 0x00,
      XmGRID_CELL_LINE        = 0x02,
      XmGRID_CELL_SHADOW      = 0x03,
      XmGRID_ROW_LINE         = 0x04,
      XmGRID_ROW_SHADOW       = 0x05,
      XmGRID_COLUMN_LINE      = 0x08,
      XmGRID_COLUMN_SHADOW    = 0x09,

      /* Deprecated types. Use will cause
       * a run-time warning to be issued. */
      XmGRID_LINE             = 0x20,
      XmGRID_SHADOW_IN        = 0x40,
      XmGRID_SHADOW_OUT       = 0x80
  };

  If any of the bottom three values, a runtime warning will be output.
  You simply need to tweak the resources in your app to avoid it.

*********************************************************************

* Added a patch supplied by Martin Helmling (mh@octogon.de) that
  correctly manages the insensitive pixmap when creating for multiple
  screens.  Patches were also sent in by Dimitri Castiglioni and
  Donato Petrino.

* Added the doc/XbaeMatrix.man.html file as part of the official release

* Jay Schmidgall sent in another patch!  This time he:

o got irritated by how the matrix did column shadows/lines.
  In particular, there could be a little gap between the last
  non-fixed row and the first trailing fixed row, and that gap
  looked bad because the column shadow just ended there. So,
  I modified the shadow & highlight code so that gap got filled
  in. Looks much better now.
o Fixed the column resize shadow so it draws all the way to the
  bottom of the matrix, plus handles the gap like the above.
o Added a new resource, XmNtrailingAttachedBottom. (If you can
  come up with a better name, feel free :). This resource makes
  the matrix keep the trailing fixed rows on the bottom. It only
  has effect when XmNfill is true and there are trailing fixed
  rows. It's probably easier to understand visually.
o I put the equivalent AttachedRight in the matrix's resources,
  but I didn't feel up to doing the code for it :).
o Added a bunch of macros.
o Added the resource to the man page (yay!)
o Mucked around some more with the choice program to add the
  attachedBottom resource, and let you change the selection mode.
  I did this mostly because choice is the test bed for changes I
  make, and I needed to test the highlighting. Also let you do
  Arm mode, which looks neat in the grid shadow modes.

* Philip Aston sent in yet another patch that remedied an array
  bounds read as reported by Purify.

* A segmentation fault occurred if the user pressed <ESC> when no
  cells had been defined.  Diligently spotted and patch provided
  by Noel Yap (nyap@garban.com)

* Removed an unnecessary reference to XmNeditVerifyCallback in
  Matrix.h that Noel found as well.

* Added fix from Jon Sibala (jon_sibala@hotmail.com) where zero 
  rows was causing a crash in xbaeDrawCell.

* David North reported a bug in the charWidth macro on OpenVMS.
  A cast to unsigned char of the passed character was required.

* Marty Leisner (leisner@sdsp.mc.xerox.com) advised that the runtest
  script required '.' to be in your path.  Added an explicit ./ to
  all commands run from the script

* Cleaned up a few potential problems with compilation

* Removed the xqCellWidget from the release. The subclassed widget
  started causing problems when using Motif 2.1 probably due to
  incompatibilities between the XmText and XmTextField widgets
  The change may also fix problems reported by the guys back at
  Bellcore, running under Motif 2.1

* There are some new public functions:- XbaeMatrixSetRowLabel and,
  funnily enough, XbaeMatrixSetColumnLabel and their Get equivalents
  are now documented in the man page.

* Just as some sort of benchmark, Callum and myself loaded up a
  historical database comprising of somewhere around 780,000 rows and
  3 columns.  Using the drawCellCallback, XbaeMatrix handled display
  of the data as if there were 100 rows.  If anyone has tried creating
  a bigger table, please let me know the results!  (That applies to
  tables created with commercial widgets too)

* The building of shared libraries is now the default behaviour in
  the Imakefile.  If anybody has trouble running the demos due
  to the shared library not being picked up, please let me know
  so we can work out a fix.

* The HTML man page is probably a bit behind as I prefer methods
  from yesteryear.  Updates are always appreciated!

* Removed a strdup call and added __EMX__ to the preprocessor directives
  for not having bcopy.  Patch sent in by Evgeny Stambulchik
  (fnevgeny@plasma-gate.weizmann.ac.il)

* Two fixes from Mark Crowther (markc@parallax.co.uk) that better
  controlled scrolling with the pointer outside the clip and prevented
  the scrollbar warnings when columns were deleted.

* Noel Yap (nyap@garban.com) pointed out a small error in the draw
  example where the columns for pixmaps was incorrect

* Added the XEvent structure to all callbacks

* New widget!  XbaeInput allows a 'pattern' to be specified to restrict
  input to certain characters.  Read the new man page to find out
  more.

* Added some extra parameters to the XbaeMatrixEnterCellCallbackStruct -
  namely, position, pattern, auto_fill, convert_case, and
  overwrite_mode for use with the XbaeInput widget.
  Also, the params and num_params are passed through to the
  enterCellCB too.

* New resource - XmNcalcCursorPosition that allows the pointer to
  specify the insert position when clicked on a cell to be edited
  rather than at the end (default is False so behaviour is unchanged)

* Nick Banyard (nbanyard@micromuse.com) provided the ability to
  allow multibyte characters to be displayed with the addition of an
  XFontSet.  There is a new example program also, named multibyte
  that *should* display multibyte characters but some work may be
  needed there.

* Mark Hatch (mhatch@ics.com) provided me a free copy of Integrated
  Computer Solutions (http://www.ics.com) Builder Xcessory for both
  Solaris and Linux so the integration and compatibility between the
  two can be maintained.  If you're looking for an excellent GUI builder,
  I'd recommend checking this one out!

* Added a matrix creation convenience routine - XbaeCreateMatrix for
  smoother integration into Builder Xcessory

* Added a caption creation convenience routine - XbaeCreateCaption for
  smoother integration into Builder Xcessory

* Added an input creation convenience routine - XbaeCreateInput for
  smoother integration into Builder Xcessory

* Evgeny Stambulchik (fnevgeny@plasma-gate.weizmann.ac.il) supplied the
  GNU autoconf tools needed to compile the widget via ./configure as so
  many people feel the urge to do nowadays.  However, I have no intention
  of supporting it so you'd better have a friend who can & will.

* Callum Gibson (callum.gibson@aus.deuba.com) wrote a couple of new
  public functions to refresh entire rows or columns efficiently.
  They are called XbaeMatrixRefreshRow() and XbaeMatrixRefreshColumn().

* The XbaeMatrixAnyCallbackStruct was created to allow the reason, 
  event, row and column members to be aligned and facilitate the use
  of one callback struct in multiple callbacks.

* Fixed a bug with wrong fg/bg colours when editing a cell with
  reverse select enabled and using a draw cell callback which set
  foreground or background. (Everyone does that don't they?)

* Added a new action that allows the matrix to be scrolled up and
  down using the PgUp/PgDn keys when the text field is mapped.  It
  is installed by default.
