(module fr-test0 (lib "slideshow.ss" "fta" "slideshow")
  (require (lib "code.ss" "fta" "slideshow"))
  
 (set-dc-for-text-size)  

  (define (color-string)
    (let* ([slide-time (current-slide/time)]
           [mst3 (modulo slide-time 3000)])
      (if (< mst3 1000)
          "Red"
          (if (< mst3 2000)
              "Green"
              "Blue"))))
  
  (slide/center
   (make-reactive
    (filled-ellipse (abs (- (until 0 mouse-x) 512))
                    (abs (- (until 0 mouse-y) 512)))))
      
  (slide
   (make-reactive
    (pin-over
     (blank 500 500)
     250 (until 0 mouse-y)
     (text "Hello" 'default 24
           (until 0 (- (/ mouse-x 150)))))))
  
  (slide/title "A Simple example"
               (make-reactive 
                (filled-ellipse (* 100 (add1 (wave 2000))) 200))
               (t "FrTime -- Expanding the horizons of slideshow!"))
  
  
  (slide/title "Changing Text Colors"
               (make-reactive
                (colorize (t (string-append "This text should be " (color-string))) (color-string))))
  
  (require (lib "class.ss"))
  (require (all-except (lib "mred.ss" "mred") send-event))
  

  
  
  (slide/title "Explicitly Timed Changes" (make-reactive
                       (transition/new-time
                        (filled-ellipse 600 200)
                        1400
                        (lambda () (transition/new-time
                                    (filled-ellipse (* 100 (add1 (wave 2000))) 200)
                                    2300
                                    (lambda () (colorize (disk (* 100 (add1 (wave 2000)))) "green")))))))
  
  
  
  
  (slide/title "Hypnotic Colors"
               (make-reactive
                (colorize (filled-ellipse 200 100) 
                          (scale-color (+ .5 (* 6 (wave 2000))) "Blue"))))
  
  
  
  (slide/title (make-reactive (color-string))
               (make-reactive (t (color-string)))
               (t "(even the title can vary with time!)"))
  
 
  
  )