 Demo directory
 Demo directory
    
    
    
    Content
 
    
	This directory contains the demo programs for STk.
	There are several categories of demos available from here:
	      
	  -  STk demos: They correspond to
	    program which don't use CLOS like object extension of
	    STk. These demo are quite simple and they often mimic
	    original Tcl/Tk demonstrations
	  
-  STklos demos: These
	    demonstration programs use the STklos object Extension of
	    STk.  The code of most of these demos has been kept short 
	    to illustrate the basic of STklos programming.
	  
-  Html demo: This demo is 
	    in fact an overview of STk/STklos that I have used once in a 
	    presentation of STklos. The pages accessible from this link 
	    present STk but also contains links or Scheme applets which 
	    illustrate the kind of things that can be done with the STk 
	    browser. Of course, to properly execute the applets contained
	    in theses pages, you need to run the STk Html browser 
	    (see below).
	    
	
Running demonstration programs without installing STk
    
	If you want to run a demo BEFORE a complete
	installation of the STk package, you must use the shell
	script ../Src/test-stk in order to run the
	interpreter (this shell script set some variables to run properly 
	the interpreter without installing it).
    
Running demonstration programs in the STk web browser
    
        
	    Note:  In this document the notation 
	    RUN means that you must type either
	    ../Src/test-stk if you have not completed the
	    installation of STk, either type stk
	    (provided that the install location is in your path)
	
	STk provides a simple Web browser which can be used to launch 
	the demo of this directory. If you are not running it now, you can 
	type the following command:
	
          RUN -f S-scape README.html
	at the shell prompt.
    
    
    1.1 Basic STk demos
    
    
    1.2 Basics of STk programming
    
      - 
	wtour.stk
	
 This is a rewrite of the Tcl/Tk wtour2.0 in Scheme/STk. Use
	the menus to navigate through different lessons.  You can make
	changes to the lesson source code; click on the Apply button
	to see the results of the changes.
 Run with:
	
		RUN -f ./wtour.stk ../Contrib/STk-wtour
 Comment: This code is a contribution of Suresh Srinivas
	<ssriniva@cs.indiana.edu>
1.3 Client/Server Demos
    
      - 
	server.stk
	
 A simple server showing how to use the socket package. It
	 creates an xterm window in which a read-eval-print-loop is
	 executed. When the window is closed or when an error occurs,
	 the socket is closed
 Run with:
	  RUN -no -f server.stk
- 
	mc-server.stk
	
 A multiple-clients server. On Unix, you can use several telnet
	sessions to discuss with the server. Each discussion
	has its own dedicated channel. Type (exit) at the STk
	when you want to exit the demo.
 Run with:
	
	 RUN -load mc-server.stk
1.4 Fun and Games
    
      - 
        turtle.stk
	
 A Logo turtle package + some demo functions.
 Run with:
	  RUN -f turtle.stk
- 
        hanoi.stk
	
 Hanoi towers animation.
 Run with:
	 RUN -f hanoi.stk
- 
	queens.stk
	
 The queens problem. You can do it yourself (and it will make
	sure you follow the rules) or you can ask it to solve the
	puzzle starting with a given board configuration.
 Run with:
	 RUN -f queens.stk
 Comment: This code is a contribution of Grant
	 Edwards <grante@rosemount.com)>
- 
        stetris.stk
	
 This is a falling block game not unlike tetris(tm) :). It is
        implemented in STk just to prove it can be done, and as a
        challenge to TCLers.  It starts slowly and becomes faster and
        faster.  Have fun.
 Run with:
	 RUN -f stetris.stk
 Comment:
	This code is a contribution of Harvey J. Stein
	<hjstein@math.huji.ac.il>
- 
	ttt.stk
	
 A 3D Tic-Tac-Toe, where the board is 4x4x4, a 3 dimensional
	board of four planes with four rows and four columns each.
 Run with:
	 RUN -f ttt.stk
 Comment:
	This code is a contribution of Edin "Dino" Hodzic
	<ehodzic@scu.edu>
1.5 Misc 
    
      - 
        console-demo.stk
	
 This is a simple demo showing a repl loop in a console.
 Run with:
	 RUN -f console.stk
 Comment: This demo is useful for Unix users only, since under 
	   Win32 STk is started with such a console.
- 
        colormap.stk
	
 This is a simple color palette written in STk.
 Run with:
	 RUN -f colormap.stk
 Comment: Note that this program is no more really useful since
	STk offers now the function Tk:choose-color
	which allow to choose a color by name or by value.
- 
        stkfontsel.stk
	
 This is a simple program which uses the STk font chooser.
 Run with:
	 RUN -f stkfontsel.stk
- 
        small-ed.stk
	
 A small editor to create enhanced text
 Run with:
	 RUN -f small-ed.stk
 Comment: 
	This editor use a ad-hoc format for saving file and was
	used for the help buttons of various widgets in old versions
	of STk.  It will not be developed anymore since the
	preferred format for help is now HTML.
- 
	showvars.stk
	
 A variable shower: this program shows the value of three
	variables (named a,b and c) Changing the value of one of
	these vars (with a set! for instance) will
	redisplay its new value immediately.
 Run with:
	
	RUN -load showvars.stk
 
- 
        inspector.stk
	
 A simple demo of the inspector on Tk widgets
 Run with:
	 RUN -f inspector.stk
 Comment: 
	 Does not work with this version of STk
 A new version of the inspector is in practically finished and 
	will be soon released.
- 
	term.stk
	
 A simple terminal emulator (a kind of xterm, but in a text widget).
 Run with:
	 RUN -f term.stk
 Comment: Users of Glibc2 (aka libc6, or RedHat 5.0
	users): This program has problems with new release of the
	libc under Linux, if your shell has the line editing mode
	set. To avoid the problem you can
	  -  disable the line editing mode of your shell
	  
-  set the SHELL variable to a dumb shell (e.g. ash)
	  
-  link STk with the old libc
	  
-  don't run the demo :-)
	
 
      All the standard Tk widgets have been wrapped in STklos
      classes. As a result, in STklos, Tk widgets are seen as instances of
      STklos classes. 
      
 There are two kinds of STklos widgets:
      
	-  Simple widgets which map one to one the Tk standard
	widgets 
	
-  Composite widgets which are built from simple Tk
	widgets (or even simpler composite widgets).
      
Demonstration programs accessible from this page use indifferently
     simple widgets and composite widgets.
2.1 Basic STklos demos
    
      - 
	hello.stklos
	
 This is a simple rewriting of the hello.stk
	demonstration in STklos
 Run with:
	 RUN -f hello.stklos
- 
	browse.stklos
	
 This is a simple rewriting of the browse.stk
	demonstration in STklos
 Run with:
	 RUN -f browse.stklos
- 
	stklos-demo.stklos
	A simple demo written in STklos. 
	
 Run with:
	RUN -f stklos-demo.stklos
 Comment: What is interesting in this demo is not what
	it does, nothing specially fancy, but how it is easy to
	program, IMHO.
- 
	stklos-demo2.stklos
	Another  simple demo written in STklos. 
	
 Run with:
	
	RUN -f stklos-demo2.stklos
 Comment: Here again, what is interesting in this demo is not what
	it does, nothing specially fancy, but how it is easy to
	program, IMHO.
- 
	classbrowse.stklos
	This demo shows the STklos class browser.
	
 Run with:
	
	RUN -f classbrowse.stklos
 
2.2 STklos widgets
	    
      
      - 
        widget.stklos
	
 A tour of the Tk widgets. This demo shows all the Tk
	widgets. This is a rewriting in STklos of the big Tcl/Tk demo
	widget.tcl. For each widget demo accessible from this
	program, you can see the source by just clicking the "See
	code" button. You can modify the code and test your
	modified version by clicking the button "Rerun demo"
 Run with:
	 RUN -f widget.stk
 Comment: This demo illustrate only the simple widgets
	(the ones of the Tk library). For a composite widgets
	demo look at the stklos-widgets.stklos program.
- 
        filebox.stklos
	
 This is a simple program which uses the <File-box> 
	composite widget. A <File-box> is a file requester
	with file name completion (on the Tab key).This widget is 
	itself a composition of various composite widget classes.
 Run with:
		RUN -f filebox.stklos
- 
        stklos-widgets.stklos
	
 A quick demo of some of the STklos Composite widgets
	which are available in this release.
 Run with:
	
	 RUN -f stklos-widgets.stklos
 Comment: This code is a contribution of Drew Whitehouse
    	<Drew.Whitehouse@anu.edu.au>.
2.3 STklos Applications
    
      - 
	calc.stklos
	
 This is a simplistic calculator.
 Run with:
	RUN -f calc.stklos
- 
	tkcolor.stklos
	
 This is a simple color picker written in STklos.
	Clicking the left mouse button in the color box sets the text
	color to the chosen color. Clicking the right button sets the
	background color. The Select button sets the selection 
	to a string which can be used (by pasting it in an xterm window) 
	as argument of most X11 applications  to set their foreground and 
	background color.
 Run with:
	RUN -f tkcolor.stklos
- 
        amib.stklos
	
 A Mini Interface Builder.
 Run with:
	 RUN -f amib.stklos
 Comment: The current version of AMIB allow you to:
	  - place objects on a plane by drag and drop
	  
- resize objects
	  
- displace objects
	  
- change all the slots of an object (color, font, value, ...)
	  
- save an interface to reload it later in an application
	
 However it is far from a really usable interface builder (but
	after all it is only a 600 lines of code application!!!!)
- 
	S-scape.stklos
	
 The STk web browser. You are probably using it while seeing these lines.
 Run with:
		RUN -f S-scape.stklos
    Erick Gallesio
Last modified: Mon Sep 13 19:59:47 CEST 1999