racket/collects/tests/mred/dc.ss
2008-02-23 09:42:03 +00:00

185 lines
5.7 KiB
Scheme

(load-relative "loadtest.ss")
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; DC Tests ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define mdc (make-object bitmap-dc%))
(define bm (make-object bitmap% 10 10))
(define bm2 (make-object bitmap% 10 10))
(test #t 'is-color? (send bm is-color?))
(define (bad m . args)
(with-handlers ([exn:fail:contract?
(lambda (x)
(test '("ok")
`(send <bad-dc> ,m ...)
(regexp-match "ok" (exn-message x))))])
(send-generic mdc (make-generic (object-interface mdc) m) . args)
(error 'bad-dc "~a shouldn't succeed" `(send <bad-dc> ,m ...))))
(define (test-all mdc try)
(try 'clear)
(try 'draw-arc 0 0 10 10 0.1 0.2)
(try 'draw-bitmap bm2 0 0)
(try 'draw-bitmap-section bm2 0 0 0 0 5 5)
(try 'draw-ellipse 0 0 10 10)
(try 'draw-line 0 0 10 10)
(try 'draw-lines (list (make-object point% 0 0) (make-object point% 10 10)))
(try 'draw-point 5 5)
(try 'draw-polygon (list (make-object point% 0 0) (make-object point% 10 10) (make-object point% 5 10)))
(try 'draw-rectangle 0 0 10 10)
(try 'draw-rounded-rectangle 0 0 10 10)
(try 'draw-spline 0 0 10 10 5 10)
(try 'draw-text "Hello" 0 0)
(try 'start-doc "Ok")
(try 'start-page)
(try 'end-page)
(try 'end-doc)
(try 'get-background)
(try 'get-brush)
(try 'get-clipping-region)
(try 'get-font)
(try 'get-pen)
(try 'get-size)
(try 'get-text-background)
(try 'get-text-foreground)
(try 'get-text-mode)
(try 'set-background (make-object color% "Yellow"))
(try 'set-brush (make-object brush% "Yellow" 'solid))
(try 'set-clipping-rect 0 0 10 10)
(try 'set-clipping-region (make-object region% mdc))
(try 'set-font (make-object font% 12 'default 'normal 'normal))
(try 'set-origin 0 0)
(try 'set-pen (make-object pen% "Yellow" 1 'solid))
(try 'set-scale 2 2)
(try 'set-text-background (make-object color% "Yellow"))
(try 'set-text-foreground (make-object color% "Yellow"))
(try 'set-text-mode 'transparent)
(try 'try-color (make-object color% "Yellow") (make-object color%)))
(st #f mdc ok?)
(test-all mdc bad)
(send mdc set-bitmap bm)
(test-all mdc (lambda (m . args)
(send-generic mdc (make-generic (object-interface mdc) m) . args)))
(send mdc set-bitmap #f)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Get-pixel, set-pixel, get-argb-pixels, etc.
(require mzlib/etc)
(define (pixel-tests b&w?)
(begin-with-definitions
(define bm3 (make-object bitmap% 10 10 b&w?))
(define mdc (make-object bitmap-dc% bm3))
(send mdc clear)
(define col (make-object color%))
(define bts (make-bytes 40))
(st #f mdc get-pixel 30 4 col)
(st #t mdc get-pixel 3 4 col)
(st 255 col red)
(st 255 col green)
(st 255 col blue)
(stv mdc get-argb-pixels 0 0 2 5 bts)
(test #t 'same-str (equal? (make-bytes 40 255) bts))
(send col set 30 40 50)
(send mdc try-color col col)
(send mdc set-pixel 3 4 col)
(when b&w?
(st 0 col red)
(st 0 col green)
(st 0 col blue))
(stv mdc get-argb-pixels 2 1 2 5 bts)
(test #t 'same-str (equal? (bytes-append (make-bytes 28 255)
(bytes 255
(send col red)
(send col green)
(send col blue))
(make-bytes 8 255))
bts))
(define col2 (make-object color% 130 140 150))
(send mdc try-color col2 col2)
(let loop ([i 0])
(unless (= i 10)
(bytes-set! bts (+ 0 (* i 4)) 255)
(bytes-set! bts (+ 1 (* i 4)) (send col2 red))
(bytes-set! bts (+ 2 (* i 4)) (send col2 green))
(bytes-set! bts (+ 3 (* i 4)) (send col2 blue))
(loop (add1 i))))
(stv mdc set-argb-pixels 5 5 5 2 bts)
(let ([col3 (make-object color%)]
[white (make-object color% 255 255 255)]
[check-col (lambda (what a b)
(test #t `(same red ,what, (send a red) ,(send b red)) (= (send a red) (send b red)))
(test #t `(same green ,what) (= (send a green) (send b green)))
(test #t `(same blue ,what) (= (send a blue) (send b blue))))])
(let i-loop ([i 0])
(unless (= i 10)
(let j-loop ([j 0])
(if (= j 10)
(i-loop (add1 i))
(begin
(st #t mdc get-pixel i j col3)
(cond
[(and (= i 3) (= j 4))
(check-col '(3 4) col col3)]
[(and (<= 5 i 9)
(<= 5 j 6))
(check-col `(,i ,j) col2 col3)]
[else
(check-col `(,i ,j) white col3)])
(j-loop (add1 j))))))))))
(pixel-tests #f)
(pixel-tests #t)
;; ----------------------------------------
;; Extra get-argb-pixels on monochrome text (from PR 8821):
(let* ((bm (make-object bitmap% 5 5 #t))
(bm2 (make-object bitmap% 5 5 #t))
(dc (new bitmap-dc% (bitmap bm)))
(pt (lambda (x y) (make-object point% x y)))
(bs (make-bytes 100))
(bs2 (make-bytes 100)))
(send dc clear)
(send dc set-brush (make-object color% 0 0 0) 'solid)
(send dc draw-polygon (list (pt 2 0) (pt 2 4)
(pt 4 4) (pt 4 0)))
(send dc set-bitmap #f)
(send bm get-argb-pixels 0 0 5 5 bs)
(send dc set-bitmap bm2)
(send dc set-argb-pixels 0 0 5 5 bs)
(send dc get-argb-pixels 0 0 5 5 bs2)
(send dc set-bitmap #f)
(test #t 'mono-bits
(equal?
bs
(bytes-append
#"\377\377\377\377\377\377\377\377\377\0\0\0\377\0\0\0\377\0\0\0\377\377\377\377\377"
#"\377\377\377\377\0\0\0\377\0\0\0\377\0\0\0\377\377\377\377\377\377\377\377\377\0\0\0"
#"\377\0\0\0\377\0\0\0\377\377\377\377\377\377\377\377\377\0\0\0\377\0\0\0\377\0\0\0"
#"\377\377\377\377\377\377\377\377\377\0\0\0\377\0\0\0\377\0\0\0")))
(test #t 'same-bits (equal? bs bs2)))
;; ----------------------------------------
(report-errs)