Three-D Athena Widgets (Xaw3d) Kaleb S. KEITHLEY kaleb@opengroup.org NOTICE: This file must be included with any source or binary version of Xaw3d or any Xaw-like library based on Xaw3d. If you hack the sources and distribute libraries from your hacked sources, you MUST include this file as is, without modification, with your libraries. NO EXCEPTIONS. Features: This is Release 1.4 (21 April, 1998) of a set of 3-D widgets based on the R6.3 Athena Widget set. The Three-D Athena may be used as a general replacement for the Athena (Xaw) Widget set. In general, you may relink almost any Athena Widget based application with the Three-D Athena Widget set and obtain a three dimensional appearance on some of the widgets. On systems with shared libraries, you can usually replace your shared libXaw with libXaw3d and obtain the three dimensional appearance without even relinking. Top and bottom shadow colors, shadow width, top and bottom shadow contrast should be self explanatory, and may be set via the usual and customary methods, e.g. app-defaults, .Xdefaults, programmatically, with editres, etc. The user data resource may be used to "hang" application specific data on a widget, and is only settable programmatically. Changes in this release: Some bug fixes. Known problems: o You may not be be able to replace shared libXaw with libXaw3d on systems with SVR3 style shared libraries. o Xaw3d pixel allocation doesn't behave well when beNiceToColormap is False and the Default Colormap is full. o The samples in Layout.h are wrong and don't work. Example programs written by Keith Packard that use the Layout widget are available on ftp://ftp.x.org/R5contrib/Layout.tar.Z o The lexer in the Layout widget doesn't work well when a program that uses the Layout widget is linked with GNU malloc. This is a problem on older releases of Linux, where the libc malloc is GNU malloc. It's also a problem on older releases of FreeBSD if you have specified "ExtraLibraries -lgnumalloc" in your imake config FreeBSD.cf file. (Undoubtedly this is also a problem on the other BSDen too, but I don't know this for a fact.) The solution for FreeBSD is to delete the ExtraLibraries in your vendor.cf file, or edit the Makefile to not link with -lgnumalloc. I don't have a solution for Linux users, nor do I have the time (or the inclination) to track this down. If you do, and you discover a fix, you're more than welcome to send it to me. o If your program subclasses Athena's Simple or Sme classes, or subclasses thereof, then there's a definite chance that Xaw3d isn't source-code compatible with your widgets. Sorry. I have no plans to fix this. Notes on Building Xaw3d Outside an X Source Tree: The source is intended to be built inside an R6.[134] source tree. You can use an X Consortium source tree (R6.1, R6.3), an X Project Team source tree (R6.4), or any XFree86 source tree that corresponds to one of the X Consortium or X Project Team source trees. You might be able to build it outside the source tree, but if you try, (pay attention here) YOU'RE ON YOUR OWN. Don't send me email about it. Don't send me email telling me you "...know you're on your own, but..." It's hard enough to find time to put out these releases, I don't have time for handholding if you choose to disregard this advice. If you don't have a source tree, for whatever reason, plan on using binaries built by someone else. I'm sorry, that's just the way it has to be. Some people have written to me and told me that if you add the following line to the Imakefile: EXTRA_INCLUDES=-I. then you can build it anywhere you want, i.e. outside the R6 source tree. If this works for you, great. If not, see above. To simplify things a bit I've already added this line to the Imakefile. Just uncomment it (by deleting the '#' at the beginning of the line. Additions, bug-fixes, improvements, etc.: Many people have written to me with enhancements and bug fixes. If your enhancement or bug fix didn't make it into this release then please understand that I'm very busy with other work and I have very little time to devote to Xaw3d. Your enhancement may appear in some future release. xterm: A comment that appears in the xterm source: * * ...There be serious and nasty dragons here. * xterm is, well, xterm. The auto-scroll in the arrow-style scrollbar doesn't work in xterm because it relies on XtTimeouts. xterm, perhaps in the name of speed, circumvents XtAppNextEvent() and goes direct to XNextEvent() to get it's XEvents, with the unfortunate side effect of completely ignoring "other sources" like timeouts. At this time I do not have a patch to fix the R6 xterm. There is a patch to the R5 xterm on ftp://ftp.x.org/contrib/widgets/Xaw3d/R5. It shouldn't be hard to integrate it into the R6 sources. Getting: Xaw3d may be found on: ftp://ftp.x.org/contrib/widgets/Xaw3d/R6.1/Xaw3d-1.4.tar.gz and mirror sites around the world. Building: Untar the distribution from the base of your X Consortium or XFree86 source tree with the command: `gunzip -c Xaw3d-1.4.tar.gz | tar xpf -` or (if your system's tar supports the 'z' option) `tar xzpf Xaw3d-1.4.tar.gz` (PAY ATTENTION HERE: If you don't know where the base of your source tree is, don't send me email asking -- I don't know where you put it. If you don't know, my guess is that you don't have one.) This will create the directory .../xc/lib/Xaw3d. 'cd' there and enter the following commands: `../../config/imake/imake -I../../config/cf -DTOPDIR=../.. -DCURRENTDIR=lib/Xaw3d` `make includes; make depend; make; make install` Building with Arrow Scrollbars: The default Xaw3d does not use arrow scrollbars. The Imakefile contains the line: # EXTRA_DEFINES = -DARROW_SCROLLBAR -DUSEGRAY If you want the arrow-scrollbar, then uncomment the line by deleting the '#'. -DUSEGRAY will do something different with the shadows. If you don't want it, edit the line accordingly. The Imakefile uses the Xaw symbols in .../xc/config/cf, so if you have debugging, profiling, shared libs, etc. specified for Xaw, you'll get them in Xaw3d too. Using: Just relink your Xaw based application with -lXaw3d. To obtain an appearance similar to another well know widget set, use the following resources: *background: LightSkyBlue *shapeStyle: Rectangle *beNiceToColormap: False By default, Label widgets do not have shadows drawn for them. You can force shadows to be drawn for specifying: *Label*shadowWidth: 2 If you'd like the default behavior (i.e. not 3-D) on pulldown menus, use: *SmeBSB*shadowWidth: 0 Credits (in chronological order of their contribution): All the people at the X Consortium Achille Hui (eillihca@drizzle.stanford.edu) Robert Withrow (witr@rwwa.com) Malcolm Strickland (chuck-strickland@orl.mmc.com David Flanagan (david@ora.com) Jamie Zawinski (jwz@netscape.com) Frank Terhaar-Yonkers (fty@bizarre.trpnc.epa.gov) Mike Schulze (mike@cs.curtin.edu.au) Gustaf Neumann (neumann@mohegan.wi-inf.uni-essen.de) Jerry Whelan (guru@stasi.bradley.edu) Mark Rawling (mwr@mel.dit.csiro.au) Tim Theisen (tim@cs.wisc.edu) Mitch Trachtenberg (mitch@mta.com) Keith Packard (keithp@ncd.com) Dimitrios P. Bouras (dbouras@hol.gr) Uri Blumenthal (uri@watson.ibm.com) Heiko Schroeder (heiko@pool.informatik.rwth-aachen.de)