50 lines
1.3 KiB
Plaintext
50 lines
1.3 KiB
Plaintext
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;; C'est tr<74>s laid. puisque ca peremt de d<>finir une globale et donc de
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;; truander les controles d'acc<63>s.
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;; (scale '.s :variable 'speed)
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;; (.s 'set 1)
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;; (destroy .s)
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(require "image")
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(define (make-animation pattern parent delay)
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(let* ((files (sort (glob pattern) string<?))
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(size (length files))
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(images (make-vector size))
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(name (gensym (& (if (eq? parent *root*) "" parent) ".l")))
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(widget (label name :bd 0 :relief "flat" :background "white"
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:env (the-environment))))
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;; Store in the image vector all the components of the animation
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(dotimes (i size)
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(let ((key (list-ref files i)))
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(vector-set! images
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i
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(make-image key :file key))))
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;; Display the first image of the animation
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(tk-set! widget :image (vector-ref images 0))
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;; Animate the image
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(letrec ((anim (let ((i 0))
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(lambda ()
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(when (winfo (quote exists) widget)
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(when (>= i size)
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(set! i 0))
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(tk-set! widget :image (vector-ref images i))
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(set! i (+ i 1))
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(update)
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(after delay anim))))))
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(after 'idle anim))
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widget))
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(define (change-animation-delay w delay)
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(let ((env (tk-get w :env)))
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(eval `(set! delay ,delay) env)))
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(define x (make-animation "/users/eg/PublicHtml/img*.gif" *root* 100))
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(pack x :fill "both" :expand #t)
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(change-animation-delay x 1000)
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