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fix `{g,s}et-argb-pixels' bytes-length test

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This commit is contained in:
Matthew Flatt 2010-12-30 07:40:42 -07:00
parent 7069a267a6
commit a736dcf6bf
1 changed files with 2 additions and 2 deletions
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4
collects/racket/draw/private/bitmap.rkt
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@ -574,7 +574,7 @@
[exact-nonnegative-integer? h]
[bytes? bstr]
[any? [get-alpha? #f]])
(unless ((bytes-length bstr) . > . (* w h))
(unless ((bytes-length bstr) . >= . (* w h 4))
(raise-mismatch-error (method-name 'bitmap% 'get-argb-pixels)
"byte string is too short: "
bstr))
@ -653,7 +653,7 @@
[exact-nonnegative-integer? h]
[bytes? bstr]
[any? [set-alpha? #f]])
(unless ((bytes-length bstr) . > . (* w h))
(unless ((bytes-length bstr) . >= . (* w h 4))
(raise-mismatch-error (method-name 'bitmap% 'set-argb-pixels)
"byte string is too short: "
bstr))