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fix contract and docs for `register-collecting-blit'

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original commit: 983188e07dce7ff28c1839183c6978963581b1c8
This commit is contained in:
Matthew Flatt 2013-08-08 13:43:26 -07:00
parent 4ad4792778
commit f065acb797
2 changed files with 10 additions and 8 deletions
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8
pkgs/gui-pkgs/gui-doc/scribblings/gui/miscwin-funcs.scrbl
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@ -321,10 +321,10 @@ Equivalent to @racket[(integer-in 1 1000000)].}
@defproc[(register-collecting-blit [canvas (is-a?/c canvas%)]
[x real?]
[y real?]
[w (and/c real? (not/c negative?))]
[h (and/c real? (not/c negative?))]
[x position-integer?]
[y position-integer?]
[w dimension-integer?]
[h dimension-integer?]
[on (is-a?/c bitmap%)]
[off (is-a?/c bitmap%)]
[on-x real? 0]

10
pkgs/gui-pkgs/gui-lib/mred/private/gdi.rkt
View File

@ -29,6 +29,8 @@
[(canvas x y w h on off on-x on-y) (register-collecting-blit canvas x y w h on off on-x on-y 0 0)]
[(canvas x y w h on off on-x on-y off-x) (register-collecting-blit canvas x y w h on off on-x on-y off-x 0)]
[(canvas x y w h on off on-x on-y off-x off-y)
(define (check-real who v)
(unless (real? v) (raise-argument-error who "real?" v)))
(check-instance 'register-collecting-blit canvas% 'canvas% #f canvas)
(check-position 'register-collecting-blit x)
(check-position 'register-collecting-blit y)
@ -36,10 +38,10 @@
(check-dimension 'register-collecting-blit h)
(check-instance 'register-collecting-blit wx:bitmap% 'bitmap% #f on)
(check-instance 'register-collecting-blit wx:bitmap% 'bitmap% #f off)
(check-position 'register-collecting-blit on-x)
(check-position 'register-collecting-blit on-y)
(check-position 'register-collecting-blit off-x)
(check-position 'register-collecting-blit off-y)
(check-real 'register-collecting-blit on-x)
(check-real 'register-collecting-blit on-y)
(check-real 'register-collecting-blit off-x)
(check-real 'register-collecting-blit off-y)
(wx:register-collecting-blit (mred->wx canvas) x y w h on off on-x on-y off-x off-y)]))
(define unregister-collecting-blit