stk/Demos/stklos-demo.stklos

#!/usr/local/bin/stk -f
;;;;
;;;; s t k l o s - d e m o . s t k 	  --  A demo which use some STklos classes
;;;;
;;;; Copyright <20> 1993-1998 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
;;;; 
;;;; Permission to use, copy, and/or distribute this software and its
;;;; documentation for any purpose and without fee is hereby granted, provided
;;;; that both the above copyright notice and this permission notice appear in
;;;; all copies and derived works.  Fees for distribution or use of this
;;;; software or derived works may only be charged with express written
;;;; permission of the copyright holder.  
;;;; This software is provided ``as is'' without express or implied warranty.
;;;;
;;;;           Author: Erick Gallesio [eg@unice.fr]
;;;;    Creation date: 24-Aug-1993 19:55
;;;; Last file update:  3-Mar-1998 17:18

(require "Tk-classes")

;;;; Utilities

(define (make-rectangle coords tags)
  (make <Rectangle> :parent c :coords coords :fill "Ivory4" :tags tags))

(define (make-circle coords tags)
  (make <Oval> :parent c :coords coords :fill "Ivory4" :tags tags))

;;;; Make canvas
(define f (make <Frame>))
(define l (make <Label>  :parent f :text "A simple demo written in STklos"))
(define c (make <Canvas> :parent f :relief "groove" :height 400 :width 700))
(define m (make <Label>  :parent f :font "fixed" :justify 'left
			 :foreground "red"
		         :text "Left button to move squares. 
Right button to move circles"))
(define q (make <Button> :text "Quit" :command (lambda () (exit 0))))

(pack l c m q :in f :expand #t :fill 'both)
(pack f)

;;;; Make items
(define r1 (make-rectangle '(0 0 50 50) 	"Rect"))
(define r2 (make-rectangle '(100 100 150 150)   "Rect"))
(define r3 (make-rectangle '(200 200 250 250)   "Rect"))

(define c1 (make-circle '(50 50 100 100)   "Circle"))
(define c2 (make-circle '(150 150 200 200) "Circle"))
(define c3 (make-circle '(250 250 300 300) "Circle"))

;;;; Make rectangles movable with button 1 and circles with button 2
(bind-for-dragging c :button 1 :tag "Rect")
(bind-for-dragging c :button 3 :tag "Circle")