xtent/counterpoint
Athena/Hp/Motif/OpenLook Widget Release
xtent is a simple function oriented language for creating X Toolkit
(Xt) based applications. The syntax of the language is based on the X
resource file syntax. The resulting language is a macro interpreter
that looks like C/C++ mixed with a simple lisp. The language may be
used as a standalone interpreter or as an embedded language with C.
Most people use the stand alone interpreter, but it is also commonly
used to create and manipulate widgets in C applications or to inspect
and debug C or C++ based applications.
xtent works with all of the common widget sets and allows full access
to the X Toolkit (and many more useful functions). We have avoided
subsetting Xt or the widget sets. The widgets are real compiled
widgets, for example Motif from OSF. This release of xtent has two
extra widgets supplied with it - a simple magnifier and a widget for
displaying and manipulating graphs or networks. Custom widgets can be
easily added to the system.
xtent includes a copy of Sam Lefler's tiff library. We use this for
reading image and fax files. We have added imake files to the library
to make it a bit easier to use with X and have supplied a very simple
function interface for creating images and pixmaps from tiff files.
We will ship our rescalable drawing widget in the next month or so.
Also at that time, Scott Anderson will be shipping his application
builder and exporting our Mosaic based tutorial (from X World).
Anyone who needs these pieces early than that or wishes to help please
send me a note.
Doug Blewett
blewett@research.att.com
This code can be compiled and installed by making a couple changes to
the defines.imake and then running the commands
install.def.sh
xmkmf
make World
If you compile with gcc be sure to set -fwritable-strings.
The changes to defines.imake tell the makefiles where important
directories and files are located. Changes made to the toplevel
Makefile will be propagated to the Makefiles in the sub-directories.
The first three lines set up the widget set that is to be used.
WIDGETSET = MOTIF
WIDGETDIR = /usr/include/Xm
WIDGETLIB = -lXm
The legal values for WIDGETSET are HP_WIDGETS, ATHENA, OPENLOOK, and
MOTIF. WIDGETDIR should be set to the directory name which includes
the widget header files. This obviously could also be something like
/usr/include/X11/widget. WIDGETLIB is the name of the widget set
library file.
The last thing one should usually have to modify is the name of the
directory that contains the CounterPoint source tree.
CPDIR = /home/blewett/cp.d
CPDIR should point to the directory which includes this file and the
rest of the source code. The next five sets of defines should not
have to be modified.
The next two lines tell where to get the XIpc library and should not
have to be modified.
XIPCDIR = $(CPDIR)/ipc/sockets
XIPCLIB = $(CPDIR)/ipc/sockets/libXIpc.a
The next two lines tell where to get the tiff library and should not
have to be modified.
TIFFDIR = $(CPDIR)/tiff/libtiff
TIFFLIB = $(CPDIR)/tiff/libtiff/libtiff.a
The next two lines tell where to get the xtent library and should not
have to be modified.
XTENTDIR = $(CPDIR)/xtent/lib
XTENTLIB = $(CPDIR)/xtent/lib/libxtent.a
CPWIDGETDIR points to the location of the supplementary widgets and
should not have to be modified.
CPWIDGETDIR = $(CPDIR)/widgets
The next three entries tell where to put the bin, library, and include
directories and should not have to be modified.
CPBINDIR = $(CPDIR)/bin
CPLIBDIR = $(CPDIR)/lib
CPINCDIR = $(CPDIR)/include
Now that you have edited in all of the changes, enter in the
following commands:
install.def.sh
xmkmf
make World
When that completes enter:
make install
The executables will then be in CPBINDIR.
The xtent examples are in the xtent directory.
Files:
C_P_args.h - ansi header file adapter
Imakefile - imake file source
README - this file
README.ol.sgi - readme for work on sgi machines
copyright.h - copywrite notice
defines.ATHENA - Athena widget set base configuration file
defines.MOTIF - Motif widget set base configuration file
defines.OL - OpenLook widget set base configuration file
defines.OL.sgi - OpenLook on SGI widget set base configuration file
docs - documents directory - all symbolic links
install.def.sh - installation script for defines.imake file
ipc - interprocess communication library
tiff - tagged image format file library
widgets - supplementary widgets
xtent - xtent source
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