fix scriblib/gui-eval and pre-build pictures for Quick

collects/scribblings/quick/images/exprs.dat

@@ -18,11 +18,13 @@
 ((2) 0 () 0 () () (void))
 ((2) 0 () 0 () () (c send c f c show c #f))
 ((2) 0 () 0 () () (void))
+((2) 0 () 0 () () (c require c slideshow/flash))
+((2) 0 () 0 () () (void))
 ((2) 0 () 0 () () (c define c (c add-drawing c p) c (c let c (c (c drawer c (c make-pict-drawer c p))) c (c new c canvas% c (c parent c f) c (c style c (c quote c (c border))) c (c paint-callback c (c lambda c (c self c dc) c (c drawer c dc c 0 c 0)))))))
 ((2) 0 () 0 () () (void))
 ((2) 0 () 0 () () (c add-drawing c (c pict+code c (c circle c 10))))
 ((2) 1 (((lib "scribble/core.rkt") . deserialize-info:element-v0)) 0 () () (0 #f (c (u . "#(struct:object:canvas% ...)"))))
 ((2) 0 () 0 () () (c add-drawing c (c colorize c (c filled-flash c 50 c 30) c "yellow")))
-((2) 1 (((lib "scriblib/private/gui-eval-exn.rkt") . deserialize-info:gui-exn-v0)) 0 () () (0 "reference to undefined identifier: filled-flash"))
+((2) 1 (((lib "scribble/core.rkt") . deserialize-info:element-v0)) 0 () () (0 #f (c (u . "#(struct:object:canvas% ...)"))))
 ((2) 0 () 0 () () (c scale c (c bitmap c (c build-path c (c collection-path c "scribblings/quick") c "art.png")) c 0.5))
 ((2) 1 (((lib "scribble/core.rkt") . deserialize-info:image-element-v0)) 0 () () (0 #f (c "[image]") (u . "images/img2") (c ".pdf" c ".png") 1.0))

collects/scribblings/quick/quick.scrbl

@@ -542,6 +542,8 @@ exposes a picture's drawing function. We can use
 @racket[make-pict-drawer] in a canvas-painting callback to draw a
 picture into a canvas:
 
+@(mr-interaction-eval (require slideshow/flash))
+
 @mr-def+int[
 (define (add-drawing p)
   (let ([drawer (make-pict-drawer p)])

collects/scriblib/gui-eval.rkt

@@ -9,6 +9,7 @@
          racket/serialize
          "private/gui-eval-exn.ss"
          racket/system
+         racket/sandbox
          (for-syntax racket/base))
 
 (define-syntax define-mr
@@ -37,8 +38,13 @@
 (define gui-eval (make-base-eval))
 
 (define mred? (getenv "MREVAL"))
+(define-namespace-anchor anchor)
 
 (when mred?
+  (call-in-sandbox-context gui-eval
+                           (lambda ()
+                             (namespace-attach-module (namespace-anchor->namespace anchor)
+                                                      'racket/class)))
   (gui-eval '(require racket/gui/base))
   (gui-eval '(require slideshow)))
 
@@ -132,15 +138,20 @@
          (set! image-counter (add1 image-counter))
          (let ([dc (let ([pss (make-object (gui-eval 'ps-setup%))])
                      (send pss set-mode 'file)
-                     (send pss set-file (path-replace-suffix fn #".ps"))
+                     (send pss set-file (path-replace-suffix fn #".pdf"))
                      (parameterize ([(gui-eval 'current-ps-setup) pss])
-                       (make-object (gui-eval 'post-script-dc%) #f)))])
+                       (let ([xb (box 0)]
+                             [yb (box 0)])
+                         (send pss get-scaling xb yb)
+                         (new (gui-eval 'pdf-dc%) 
+                              [interactive #f]
+                              [width (* (unbox xb) (get-width v))]
+                              [height (* (unbox yb) (get-height v))]))))])
            (send dc start-doc "Image")
            (send dc start-page)
            (render v dc 0 0)
            (send dc end-page)
-           (send dc end-doc)
+           (send dc end-doc))
-           (system (format "epstopdf ~a" (path-replace-suffix fn #".ps"))))
          (let* ([bm (make-object (gui-eval 'bitmap%)
                       (inexact->exact (ceiling (get-width v)))
                       (inexact->exact (ceiling (get-height v))))]