63 lines
2.3 KiB
Plaintext
63 lines
2.3 KiB
Plaintext
#!/usr/local/bin/stk -f
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;;;;
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;;;; s t k l o s - d e m o 2 . s t k -- A demo which use some STklos classes
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;;;;
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;;;; Copyright © 1993-1999 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
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;;;;
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;;;; Permission to use, copy, modify, distribute,and license this
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;;;; software and its documentation for any purpose is hereby granted,
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;;;; provided that existing copyright notices are retained in all
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;;;; copies and that this notice is included verbatim in any
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;;;; distributions. No written agreement, license, or royalty fee is
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;;;; required for any of the authorized uses.
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;;;; This software is provided ``AS IS'' without express or implied
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;;;; warranty.
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;;;;
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;;;; Author: Erick Gallesio [eg@unice.fr]
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;;;; Creation date: 24-Aug-1993 19:55
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;;;; Last file update: 3-Sep-1999 19:00 (eg)
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(require "Tk-classes")
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;;;; Make canvas
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(define f (make <Frame>))
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(define l (make <Label> :parent f :text "A simple demo written in STklos"))
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(define c (make <Canvas> :parent f :relief "groove" :height 400 :width 700))
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(define m (make <Label> :parent f :font '(Courier -12) :justify 'left
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:text "This demo file illustrates the use of bind-for-dragging with various parameters:
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- Left button to drag any kind of object.
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- Left button with Shift key pressed to drag an object and executes user hooks
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- Right button to move red objects only."))
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(define q (make <Button> :text "Quit" :command (lambda () (exit 0))))
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(pack l c m q :in f :expand #t :fill 'both)
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(pack f)
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;;;; Make items
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(define r1 (make <rectangle> :coords '(0 0 50 50)
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:parent c
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:fill "red"
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:tags "red"))
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(define r2 (make <rectangle> :coords '(100 100 150 150)
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:parent c
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:fill "blue"))
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(define t (make <Text-Item> :coords '(80 80)
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:parent c
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:fill "red"
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:tags "red"
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:text "Hello world!"))
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;; Button 1 for dragging objects
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(bind-for-dragging c)
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;; Button 1 for dragging objects (with user hooks)
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(bind-for-dragging c :tag 'all
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:modifier "Shift"
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:start (lambda (w x y) (format #t "Start to drag ~S\n" w))
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:motion (lambda (w x y) (format #t "Move ~A ~A\n" x y))
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:stop (lambda (w x y) (format #t "Stop with ~S\n" w)))
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;; Button 3 for dragging red objects (i.e. r1 and t)
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(bind-for-dragging c :tag "red" :button 3)
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