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racket/gui: make `editor-canvas%' fail more gracefully on too-large content

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Closes PR 13087
This commit is contained in:
Matthew Flatt 2012-09-02 10:08:23 -06:00
parent 19b2ee5e90
commit 64eb4f9389
1 changed files with 11 additions and 11 deletions
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22
collects/mred/private/wxme/editor-canvas.rkt
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@ -876,28 +876,28 @@
(unless fake-x-scroll?
(let ([x (min x hnum-scrolls)])
(when (hspp . < . hscrolls-per-page)
(set-scroll-page 'horizontal hspp))
(set-scroll-page 'horizontal (min hspp 10000000)))
(when (x . < . sx)
(set-scroll-pos 'horizontal x))
(when (not (= scroll-width hnum-scrolls))
(set-scroll-range 'horizontal hnum-scrolls))
(set-scroll-range 'horizontal (min hnum-scrolls 10000000)))
(when (x . > . sx)
(set-scroll-pos 'horizontal x))
(set-scroll-pos 'horizontal (min x 10000000)))
(when (hspp . > . hscrolls-per-page)
(set-scroll-page 'horizontal hspp))))
(set-scroll-page 'horizontal (min hspp 10000000)))))
(unless fake-y-scroll?
(let ([y (min y vnum-scrolls)])
(when (vspp . < . vscrolls-per-page)
(set-scroll-page 'vertical vspp))
(set-scroll-page 'vertical (min vspp 10000000)))
(when (y . < . sy)
(set-scroll-pos 'vertical y))
(set-scroll-pos 'vertical (min y 10000000)))
(when (not (= scroll-height vnum-scrolls))
(set-scroll-range 'vertical vnum-scrolls))
(set-scroll-range 'vertical (min vnum-scrolls 10000000)))
(when (y . > . sy)
(set-scroll-pos 'vertical y))
(set-scroll-pos 'vertical (min y 10000000)))
(when (vspp . > . vscrolls-per-page)
(set-scroll-page 'vertical vspp))))
(set-scroll-page 'vertical (min vspp 10000000)))))
(let ([go-again? (or go-again?
(given-h-scrolls-per-page . < . -1))])
@ -921,12 +921,12 @@
(when (and (x . > . -1)
(not fake-x-scroll?))
(when (positive? scroll-width)
(set-scroll-pos 'horizontal (->long (min x scroll-width)))))
(set-scroll-pos 'horizontal (min (->long (min x scroll-width)) 10000000))))
(when (and (y . > . -1)
(not fake-y-scroll?))
(when (positive? scroll-height)
(set-scroll-pos 'vertical (->long (min y scroll-height)))))
(set-scroll-pos 'vertical (min (->long (min y scroll-height)) 10000000))))
(set! noloop? savenoloop?)