933 lines
31 KiB
Scheme
933 lines
31 KiB
Scheme
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(require (lib "class100.ss"))
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(define sys-path
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(lambda (f)
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(build-path (collection-path "icons") f)))
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(define local-path
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(let ([d (current-load-relative-directory)])
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(lambda (f)
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(build-path d f))))
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(define (get-icon)
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(make-object bitmap% (sys-path "mred.xbm") 'xbm))
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(define get-plt
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(let ([i #f])
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(lambda ()
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(unless i
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(set! i (make-object bitmap% (sys-path "plt.gif"))))
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i)))
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(define get-rotated
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(let ([i #f])
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(lambda ()
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(unless i
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(set! i (let* ([icon (get-icon)]
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[w (send icon get-width)]
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[h (send icon get-height)])
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(let ([bm (make-object bitmap% w h #t)])
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(let ([src (make-object bitmap-dc% icon)]
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[dest (make-object bitmap-dc% bm)]
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[c (make-object color%)])
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(let loop ([i 0])
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(unless (= i w)
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(let loop ([j 0])
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(unless (= j h)
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(send src get-pixel i j c)
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(send dest set-pixel i (- h j 1) c)
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(loop (add1 j))))
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(loop (add1 i))))
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(send src set-bitmap #f)
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(send dest set-bitmap #f)
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bm)))))
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i)))
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(define (show-instructions file)
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(letrec ([f (make-object frame% file #f 400 400)]
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[print (make-object button% "Print" f
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(lambda (b ev)
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(send e print)))]
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[c (make-object editor-canvas% f)]
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[e (make-object text%)])
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(send e load-file file)
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(send e lock #t)
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(send c set-editor e)
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(send f show #t)))
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(define pi (atan 0 -1))
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(define octagon
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(list (make-object point% 60 60)
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(make-object point% 120 60)
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(make-object point% 180 120)
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(make-object point% 180 180)
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(make-object point% 120 240)
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(make-object point% 60 240)
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(make-object point% 0 180)
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(make-object point% 0 120)
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(make-object point% 60 60)))
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(define (get-b&w-light-stipple)
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(make-object bitmap%
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(list->string (map integer->char '(#x88 0 #x22 0 #x88 0 #x22 0)))
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8 8))
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(define (get-b&w-half-stipple)
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(make-object bitmap%
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(list->string (map integer->char '(#xcc #x33 #xcc #x33 #xcc #x33 #xcc #x33)))
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8 8))
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(let* ([f (make-object frame% "Graphics Test" #f 300 450)]
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[vp (make-object vertical-panel% f)]
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[hp0 (make-object horizontal-panel% vp)]
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[hp (make-object horizontal-panel% vp)]
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[hp2 hp]
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[hp3 (make-object horizontal-pane% vp)]
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[bb (make-object bitmap% (sys-path "bb.gif") 'gif)]
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[return (let* ([bm (make-object bitmap% (sys-path "return.xbm") 'xbm)]
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[dc (make-object bitmap-dc% bm)])
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(send dc draw-line 0 3 20 3)
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(send dc set-bitmap #f)
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bm)]
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[clock-start #f]
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[clock-end #f]
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[clock-clip? #f]
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[use-bitmap? #f]
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[use-bad? #f]
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[depth-one? #f]
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[cyan? #f]
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[save-filename #f]
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[save-file-format #f]
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[clip 'none])
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(send hp0 stretchable-height #f)
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(send hp stretchable-height #f)
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(send hp3 stretchable-height #f)
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(make-object button% "What Should I See?" hp0
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(lambda (b e)
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(show-instructions (local-path "draw-info.txt"))))
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(let ([canvas
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(make-object
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(class100 canvas% args
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(inherit get-dc)
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(private-field
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[no-bitmaps? #f]
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[no-stipples? #f]
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[pixel-copy? #f]
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[mask-ex-mode 'mred]
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[scale 1]
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[offset 0])
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(public
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[set-bitmaps (lambda (on?) (set! no-bitmaps? (not on?)) (on-paint))]
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[set-stipples (lambda (on?) (set! no-stipples? (not on?)) (on-paint))]
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[set-pixel-copy (lambda (on?) (set! pixel-copy? on?) (on-paint))]
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[set-mask-ex-mode (lambda (mode) (set! mask-ex-mode mode) (on-paint))]
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[set-scale (lambda (s) (set! scale s) (on-paint))]
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[set-offset (lambda (o) (set! offset o) (on-paint))])
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(override
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[on-paint
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(case-lambda
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[() (on-paint #f)]
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[(ps?)
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(let* ([can-dc (get-dc)]
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[pen0s (make-object pen% "BLACK" 0 'solid)]
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[pen1s (make-object pen% "BLACK" 1 'solid)]
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[pen2s (make-object pen% "BLACK" 2 'solid)]
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[pen0t (make-object pen% "BLACK" 0 'transparent)]
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[pen1t (make-object pen% "BLACK" 1 'transparent)]
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[pen2t (make-object pen% "BLACK" 2 'transparent)]
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[pen0x (make-object pen% "BLACK" 0 'xor)]
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[pen1x (make-object pen% "BLACK" 1 'xor)]
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[pen2x (make-object pen% "BLACK" 2 'xor)]
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[brushs (make-object brush% "BLACK" 'solid)]
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[brusht (make-object brush% "BLACK" 'transparent)]
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[brushb (make-object brush% "BLUE" 'solid)]
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[mem-dc (if use-bitmap?
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(make-object bitmap-dc%)
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#f)]
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[bm (if use-bitmap?
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(if use-bad?
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(make-object bitmap% "no such file")
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(make-object bitmap% (* scale 400) (* scale 350) depth-one?))
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#f)]
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[draw-series
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(lambda (dc pens pent penx size x y flevel last?)
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(let* ([ofont (send dc get-font)]
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[otfg (send dc get-text-foreground)]
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[otbg (send dc get-text-background)]
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[obm (send dc get-text-mode)])
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(if (positive? flevel)
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(send dc set-font
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(make-object font%
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10 'decorative
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'normal
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(if (> flevel 1)
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'bold
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'normal)
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#t)))
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(send dc set-pen pens)
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(send dc set-brush brusht)
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; Text should overlay this line (except for 2x2)
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(send dc draw-line
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(+ x 3) (+ y 12)
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(+ x 40) (+ y 12))
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(send dc set-text-background (make-object color% "YELLOW"))
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(when (= flevel 2)
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(send dc set-text-foreground (make-object color% "RED"))
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(send dc set-text-mode 'solid))
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(send dc draw-text (string-append size " P\351n") ; 351 is e with '
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(+ x 5) (+ y 8))
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(send dc set-font ofont)
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(when (= flevel 2)
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(send dc set-text-foreground otfg)
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(send dc set-text-mode obm))
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(send dc set-text-background otbg)
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(send dc draw-line
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(+ x 5) (+ y 27) (+ x 10) (+ 27 y))
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(send dc draw-rectangle
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(+ x 5) (+ y 30) 5 5)
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(send dc draw-line
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(+ x 12) (+ y 30) (+ x 12) (+ y 35))
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(send dc draw-line
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(+ x 5) (+ y 40) (+ x 10) (+ 40 y))
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(send dc draw-rectangle
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(+ x 5) (+ y 41) 5 5)
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(send dc draw-line
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(+ x 10) (+ y 41) (+ x 10) (+ 46 y))
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(send dc draw-line
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(+ x 15) (+ y 25) (+ x 20) (+ 25 y))
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(send dc draw-line
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(+ x 20) (+ y 30) (+ x 20) (+ 25 y))
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(send dc draw-line
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(+ x 30) (+ y 25) (+ x 25) (+ 25 y))
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(send dc draw-line
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(+ x 25) (+ y 30) (+ x 25) (+ 25 y))
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(send dc draw-line
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(+ x 35) (+ y 30) (+ x 40) (+ 30 y))
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(send dc draw-line
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(+ x 40) (+ y 25) (+ x 40) (+ 30 y))
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(send dc draw-line
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(+ x 50) (+ y 30) (+ x 45) (+ 30 y))
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(send dc draw-line
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(+ x 45) (+ y 25) (+ x 45) (+ 30 y))
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; Check line thickness with "X"
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(send dc draw-line
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(+ x 20) (+ y 45) (+ x 40) (+ 39 y))
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(send dc draw-line
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(+ x 20) (+ y 39) (+ x 40) (+ 45 y))
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(send dc draw-rectangle
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(+ x 5) (+ y 50) 10 10)
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(send dc draw-rounded-rectangle
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(+ x 5) (+ y 65) 10 10 3)
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(send dc draw-ellipse
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(+ x 5) (+ y 80) 10 10)
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(send dc set-brush brushs)
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(send dc draw-rectangle
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(+ x 17) (+ y 50) 10 10)
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(send dc draw-rounded-rectangle
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(+ x 17) (+ y 65) 10 10 3)
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(send dc draw-ellipse
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(+ x 17) (+ y 80) 10 10)
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(send dc set-pen pent)
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(send dc draw-rectangle
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(+ x 29) (+ y 50) 10 10)
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(send dc draw-rounded-rectangle
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(+ x 29) (+ y 65) 10 10 3)
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(send dc draw-ellipse
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(+ x 29) (+ y 80) 10 10)
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(send dc set-pen penx)
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(send dc draw-rectangle
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(+ x 41) (+ y 50) 10 10)
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(send dc draw-rounded-rectangle
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(+ x 41) (+ y 65) 10 10 3)
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(send dc draw-ellipse
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(+ x 41) (+ y 80) 10 10)
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(send dc set-pen pens)
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(send dc draw-rectangle
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(+ x 17) (+ y 95) 10 10)
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; (send dc set-logical-function 'clear)
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(send dc draw-rectangle
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(+ x 18) (+ y 96) 8 8)
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; (send dc set-logical-function 'copy)
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(send dc draw-rectangle
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(+ x 29) (+ y 95) 10 10)
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; (send dc set-logical-function 'clear)
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(send dc set-pen pent)
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(send dc draw-rectangle
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(+ x 30) (+ y 96) 8 8)
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(send dc set-pen pens)
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(send dc draw-rectangle
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(+ x 5) (+ y 95) 10 10)
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; (send dc set-logical-function 'xor)
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(send dc draw-rectangle
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(+ x 5) (+ y 95) 10 10)
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; (send dc set-logical-function 'copy)
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(send dc draw-line
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(+ x 5) (+ y 110) (+ x 8) (+ y 110))
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(send dc draw-line
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(+ x 8) (+ y 110) (+ x 11) (+ y 113))
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(send dc draw-line
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(+ x 11) (+ y 113) (+ x 11) (+ y 116))
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(send dc draw-line
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(+ x 11) (+ y 116) (+ x 8) (+ y 119))
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(send dc draw-line
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(+ x 8) (+ y 119) (+ x 5) (+ y 119))
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(send dc draw-line
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(+ x 5) (+ y 119) (+ x 2) (+ y 116))
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(send dc draw-line
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(+ x 2) (+ y 116) (+ x 2) (+ y 113))
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(send dc draw-line
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(+ x 2) (+ y 113) (+ x 5) (+ y 110))
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(send dc draw-lines
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(list
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(make-object point% 5 95)
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(make-object point% 8 95)
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(make-object point% 11 98)
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(make-object point% 11 101)
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(make-object point% 8 104)
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(make-object point% 5 104)
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(make-object point% 2 101)
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(make-object point% 2 98)
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(make-object point% 5 95))
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(+ x 12) (+ y 15))
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(send dc draw-point (+ x 35) (+ y 115))
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(send dc draw-line (+ x 35) (+ y 120) (+ x 35) (+ y 120))
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(send dc draw-line
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(+ x 5) (+ y 125) (+ x 10) (+ y 125))
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(send dc draw-line
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(+ x 11) (+ y 125) (+ x 16) (+ y 125))
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(send dc set-brush brusht)
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(send dc draw-arc
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(+ x 5) (+ y 135)
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30 40
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0 (/ pi 2))
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(send dc draw-arc
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(+ x 5) (+ y 135)
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30 40
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(/ pi 2) pi)
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(send dc set-brush brushs)
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(send dc draw-arc
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(+ x 45) (+ y 135)
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30 40
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(/ pi 2) pi)
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(send dc set-brush brusht)
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(when last?
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(let ([p (send dc get-pen)])
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(send dc set-pen (make-object pen% "BLACK" 1 'xor))
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(send dc draw-polygon octagon)
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(send dc set-pen p))
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(when clock-start
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(let ([b (send dc get-brush)])
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(send dc set-brush (make-object brush% "ORANGE" 'solid))
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(send dc draw-arc 0. 60. 180. 180. clock-start clock-end)
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(send dc set-brush b))))
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(when last?
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(let ([op (send dc get-pen)])
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; Splines
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(define (draw-ess dx dy)
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(send dc draw-spline
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(+ dx 200) (+ dy 10)
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(+ dx 218) (+ dy 12)
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(+ dx 220) (+ dy 20))
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(send dc draw-spline
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(+ dx 220) (+ dy 20)
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(+ dx 222) (+ dy 28)
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(+ dx 240) (+ dy 30)))
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(send dc set-pen pen0s)
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(draw-ess 0 0)
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(send dc set-pen (make-object pen% "RED" 0 'solid))
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(draw-ess -2 2)
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; Polygons: odd-even vs. winding
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(let ([polygon
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(list (make-object point% 12 0)
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(make-object point% 40 0)
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(make-object point% 40 28)
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(make-object point% 0 28)
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(make-object point% 0 12)
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(make-object point% 28 12)
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(make-object point% 28 40)
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(make-object point% 12 40)
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(make-object point% 12 0))]
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[ob (send dc get-brush)]
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[op (send dc get-pen)])
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(send dc set-pen pen1s)
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(send dc set-brush (make-object brush% "BLUE" 'solid))
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(send dc draw-polygon polygon 200 40 'odd-even)
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(send dc draw-polygon polygon 200 90 'winding)
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(send dc set-pen op)
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(send dc set-brush ob))
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; Brush patterns:
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(let ([pat-list (list 'bdiagonal-hatch
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'crossdiag-hatch
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'fdiagonal-hatch
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'cross-hatch
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'horizontal-hatch
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'vertical-hatch)]
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[b (make-object brush% "BLACK" 'solid)]
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[ob (send dc get-brush)]
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[obg (send dc get-background)]
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[blue (make-object color% "BLUE")])
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(let loop ([x 245][y 10][l pat-list])
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(unless (null? l)
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(send b set-color "BLACK")
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(send b set-style (car l))
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(send dc set-brush b)
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(send dc draw-rectangle x y 20 20)
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(send dc set-brush ob)
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(send b set-color "GREEN")
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(send dc set-brush b)
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(send dc draw-rectangle (+ x 25) y 20 20)
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(send dc set-background blue)
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(send dc draw-rectangle (+ x 50) y 20 20)
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(send dc set-background obg)
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(send dc set-brush ob)
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(loop x (+ y 25) (cdr l))))
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(send b set-style 'panel)
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(send b set-color (get-panel-background))
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(send dc set-brush b)
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(send dc draw-rectangle 320 10 20 20)
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(send dc draw-ellipse 320 35 20 20)
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(send dc draw-arc 320 60 20 20 0 3.14)
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(send dc draw-rounded-rectangle 320 85 20 20 2)
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(send dc set-brush ob))
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(send dc set-pen op))
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; Thick-line centering:
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(let ([thick (make-object pen% "GREEN" 5 'solid)])
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(define (draw-lines)
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(send dc draw-line 360 10 400 50)
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(send dc draw-line 360 50 400 10)
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(send dc draw-line 360 80 400 80)
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(send dc draw-line 380 60 380 100)
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(send dc draw-line 360 120 400 140)
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(send dc draw-line 370 110 390 150))
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(let ([op (send dc get-pen)])
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(send dc set-pen thick)
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(draw-lines)
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(send dc set-pen pen0s)
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(draw-lines)
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(send dc set-pen op)))
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; B&W 8x8 stipple:
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(unless no-bitmaps?
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(let ([bml (get-b&w-light-stipple)]
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[bmh (get-b&w-half-stipple)]
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[orig-b (send dc get-brush)]
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[orig-pen (send dc get-pen)])
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(send dc set-brush brusht)
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(send dc set-pen pen1s)
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(send dc draw-rectangle 244 164 18 18)
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(send dc draw-bitmap bml 245 165)
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(send dc draw-bitmap bml 245 173)
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(send dc draw-bitmap bml 253 165)
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(send dc draw-bitmap bml 253 173)
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(let ([p (make-object pen% "RED" 1 'solid)])
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(send p set-stipple bmh)
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(send dc set-pen p)
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(send dc draw-rectangle 270 164 18 18))
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(send dc set-brush orig-b)
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(send dc set-pen orig-pen))))
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(unless no-bitmaps?
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(let ([obg (send dc get-background)]
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[tan (make-object color% "TAN")])
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(send dc set-background tan)
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(let* ([bits "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789/+"]
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[bm (make-object bitmap% bits 64 8)])
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(send dc draw-bitmap bm 306 164 'opaque))
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(let* ([bits "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567"]
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[bm (make-object bitmap% bits 48 10)])
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(send dc draw-bitmap bm 306 184 'opaque))
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(send dc set-background obg)))
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(when last?
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; Test get-text-extent
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|
(let ([save-pen (send dc get-pen)]
|
|
[save-fnt (send dc get-font)])
|
|
(send dc set-pen (make-object pen% "YELLOW" 1 'solid))
|
|
(let loop ([fam '(default default modern modern decorative roman)]
|
|
[stl '(normal slant slant italic normal normal)]
|
|
[wgt '(normal bold normal normal bold normal)]
|
|
[sze '(12 12 12 12 12 32)]
|
|
[x 244]
|
|
[y 210])
|
|
(unless (null? fam)
|
|
(let ([fnt (make-object font% (car sze) (car fam) (car stl) (car wgt))]
|
|
[s "AgMh"])
|
|
(send dc set-font fnt)
|
|
(send dc draw-text s x y)
|
|
(send dc set-font save-fnt)
|
|
(let-values ([(w h d a) (send dc get-text-extent s fnt)])
|
|
(send dc draw-rectangle x y w h)
|
|
(send dc draw-line x (+ y (- h d)) (+ x w) (+ y (- h d)))
|
|
(loop (cdr fam) (cdr stl) (cdr wgt) (cdr sze) x (+ y h))))))
|
|
(send dc set-pen save-pen)))
|
|
|
|
; Bitmap copying:
|
|
(when (and (not no-bitmaps?) last?)
|
|
(let ([x 5] [y 165])
|
|
(let ([mred-icon (get-icon)])
|
|
(case mask-ex-mode
|
|
[(plt plt-mask plt^plt)
|
|
(let* ([plt (get-plt)]
|
|
[tmp-bm (make-object bitmap%
|
|
(send mred-icon get-width)
|
|
(send mred-icon get-height)
|
|
#f)]
|
|
[tmp-dc (make-object bitmap-dc% tmp-bm)])
|
|
(send tmp-dc draw-bitmap plt
|
|
(/ (- (send mred-icon get-width)
|
|
(send plt get-width))
|
|
2)
|
|
(/ (- (send mred-icon get-height)
|
|
(send plt get-height))
|
|
2))
|
|
(send dc draw-bitmap tmp-bm x y 'solid
|
|
(send the-color-database find-color "BLACK")
|
|
(cond
|
|
[(eq? mask-ex-mode 'plt-mask) mred-icon]
|
|
[(eq? mask-ex-mode 'plt^plt) tmp-bm]
|
|
[else #f])))]
|
|
[(mred^mred)
|
|
(send dc draw-bitmap mred-icon x y
|
|
'solid
|
|
(send the-color-database find-color "BLACK")
|
|
mred-icon)]
|
|
[(mred~)
|
|
(send dc draw-bitmap (get-rotated) x y 'opaque)]
|
|
[(mred^mred~ opaque-mred^mred~ red-mred^mred~)
|
|
(send dc draw-bitmap mred-icon x y
|
|
(if (eq? mask-ex-mode 'opaque-mred^mred~)
|
|
'opaque
|
|
'solid)
|
|
(send the-color-database find-color
|
|
(if (eq? mask-ex-mode 'red-mred^mred~)
|
|
"RED"
|
|
"BLACK"))
|
|
(get-rotated))]
|
|
[else
|
|
;; simple draw
|
|
(send dc draw-bitmap mred-icon x y 'xor)]))
|
|
(set! x (+ x (send (get-icon) get-width)))
|
|
(let ([black (send the-color-database find-color "BLACK")]
|
|
[red (send the-color-database find-color "RED")]
|
|
[do-one
|
|
(lambda (bm mode color)
|
|
(if (send bm ok?)
|
|
(begin
|
|
(let ([h (send bm get-height)]
|
|
[w (send bm get-width)])
|
|
(send dc set-pen (make-object pen% "YELLOW" 1 'solid))
|
|
(send dc draw-line 3 3 40 40)
|
|
(send dc draw-bitmap-section
|
|
bm x y
|
|
0 0 w h
|
|
mode color)
|
|
(set! x (+ x w 10))))
|
|
(printf "bad bitmap~n")))])
|
|
;; BB icon
|
|
(do-one bb 'solid black)
|
|
(let ([start x])
|
|
;; First three return icons:
|
|
(do-one return 'solid black)
|
|
(do-one return 'solid red)
|
|
(do-one return 'opaque red)
|
|
;; Next three, on a bluew background
|
|
(let ([end x]
|
|
[b (send dc get-brush)])
|
|
(send dc set-brush (make-object brush% "BLUE" 'solid))
|
|
(send dc draw-rounded-rectangle (- start 5) (+ y 15) (- end start) 15 -0.2)
|
|
(send dc set-brush b)
|
|
(set! x start)
|
|
(set! y (+ y 18))
|
|
(do-one return 'solid black)
|
|
(do-one return 'solid red)
|
|
(do-one return 'opaque red)
|
|
(set! y (- y 18))))
|
|
;; Another BB icon, make sure color has no effect
|
|
(do-one bb 'solid red)
|
|
;; Another return, blacnk on red
|
|
(let ([bg (send dc get-background)])
|
|
(send dc set-background (send the-color-database find-color "BLACK"))
|
|
(do-one return 'opaque red)
|
|
(send dc set-background bg))
|
|
;; Return by drawing into color, copying color to monochrome, then
|
|
;; monochrome back oonto canvas:
|
|
(let* ([w (send return get-width)]
|
|
[h (send return get-height)]
|
|
[color (make-object bitmap% w h)]
|
|
[mono (make-object bitmap% w h #t)]
|
|
[cdc (make-object bitmap-dc% color)]
|
|
[mdc (make-object bitmap-dc% mono)])
|
|
(send cdc clear)
|
|
(send cdc draw-bitmap return 0 0)
|
|
(send mdc clear)
|
|
(send mdc draw-bitmap color 0 0)
|
|
(send dc draw-bitmap mono
|
|
(- x w 10) (+ y 18)))
|
|
(send dc set-pen pens))))
|
|
|
|
(when (and (not no-stipples?) last?)
|
|
; Blue box as background:
|
|
(send dc set-brush brushb)
|
|
(send dc draw-rectangle 80 200 125 40)
|
|
(when (send return ok?)
|
|
(let ([b (make-object brush% "GREEN" 'solid)])
|
|
(send b set-stipple return)
|
|
(send dc set-brush b)
|
|
; First stipple (transparent background)
|
|
(send dc draw-rectangle 85 205 30 30)
|
|
(send dc set-brush brushs)
|
|
(send b set-style 'opaque)
|
|
(send dc set-brush b)
|
|
; Second stipple (opaque)
|
|
(send dc draw-ellipse 120 205 30 30)
|
|
(send dc set-brush brushs)
|
|
(send b set-stipple bb)
|
|
(send dc set-brush b)
|
|
; Third stipple (BB logo)
|
|
(send dc draw-rectangle 155 205 20 30)
|
|
(send dc set-brush brushs)
|
|
(send b set-stipple #f)
|
|
(send b set-style 'cross-hatch)
|
|
(send dc set-brush b)
|
|
; Green cross hatch (white BG) on blue field
|
|
(send dc draw-rectangle 180 205 20 20)
|
|
(send dc set-brush brushs))))
|
|
|
|
(when (and pixel-copy? last? (not (or ps? (eq? dc can-dc))))
|
|
(let* ([x 100]
|
|
[y 170]
|
|
[x2 245] [y2 188]
|
|
[w 40] [h 20]
|
|
[c (make-object color%)]
|
|
[bm (make-object bitmap% w h depth-one?)]
|
|
[mdc (make-object bitmap-dc%)])
|
|
(send mdc set-bitmap bm)
|
|
(let iloop ([i 0])
|
|
(unless (= i w)
|
|
(let jloop ([j 0])
|
|
(if (= j h)
|
|
(iloop (add1 i))
|
|
(begin
|
|
(send dc get-pixel (+ i x) (+ j y) c)
|
|
(send mdc set-pixel i j c)
|
|
(jloop (add1 j)))))))
|
|
(send dc draw-bitmap bm x2 y2)
|
|
(let ([p (send dc get-pen)]
|
|
[b (send dc get-brush)])
|
|
(send dc set-pen (make-object pen% "BLACK" 0 'xor-dot))
|
|
(send dc set-brush brusht)
|
|
(send dc draw-rectangle x y w h)
|
|
(send dc set-pen p)
|
|
(send dc set-brush b))))
|
|
|
|
(let ([styles (list 'solid
|
|
'dot
|
|
'long-dash
|
|
'short-dash
|
|
'dot-dash)]
|
|
[obg (send dc get-background)]
|
|
[red (make-object color% "RED")])
|
|
(let loop ([s styles][y 250])
|
|
(unless (null? s)
|
|
(let ([p (make-object pen% "GREEN" flevel (car s))])
|
|
(send dc set-pen p)
|
|
(send dc draw-line (+ x 5) y (+ x 30) y)
|
|
(send dc set-background red)
|
|
(send dc draw-line (+ x 5) (+ 4 y) (+ x 30) (+ y 4))
|
|
(send dc set-background obg)
|
|
(send pens set-style (car s))
|
|
(send dc set-pen pens)
|
|
(send dc draw-line (+ x 30) y (+ x 55) y)
|
|
(send dc set-background red)
|
|
(send dc draw-line (+ x 30) (+ y 4) (+ x 55) (+ y 4))
|
|
(send dc set-background obg)
|
|
(send dc set-pen pent)
|
|
(send pens set-style 'solid)
|
|
(loop (cdr s) (+ y 8))))))
|
|
|
|
(when (= flevel 2)
|
|
(let ([lens '(0 0.25 0.5 0.75 1.0 1.25 1.5 1.75 2.0)])
|
|
(let loop ([l lens][x 10])
|
|
(unless (null? l)
|
|
(let ([p (make-object pen% "BLACK" (car l) 'solid)])
|
|
(send dc set-pen p)
|
|
(send dc draw-line x 300 (+ x 19) 300)
|
|
(send dc set-pen pent)
|
|
(loop (cdr l) (+ x 20)))))))
|
|
|
|
(when (and last? (not (or ps? (eq? dc can-dc)))
|
|
(send mem-dc get-bitmap))
|
|
(send can-dc draw-bitmap (send mem-dc get-bitmap) 0 0 'opaque)))
|
|
|
|
'done)])
|
|
|
|
(send (get-dc) set-scale 1 1)
|
|
(send (get-dc) set-origin 0 0)
|
|
|
|
(let ([dc (if ps?
|
|
(let ([dc (if (eq? ps? 'print)
|
|
(make-object printer-dc%)
|
|
(make-object post-script-dc%))])
|
|
(and (send dc ok?) dc))
|
|
(if (and use-bitmap?)
|
|
(begin
|
|
(send mem-dc set-bitmap bm)
|
|
mem-dc)
|
|
(get-dc)))])
|
|
(when dc
|
|
(send dc start-doc "Draw Test")
|
|
(send dc start-page)
|
|
|
|
(send dc set-scale scale scale)
|
|
(send dc set-origin offset offset)
|
|
|
|
(send dc set-background
|
|
(if cyan?
|
|
(send the-color-database find-color "CYAN")
|
|
(send the-color-database find-color "WHITE")))
|
|
|
|
;(send dc set-clipping-region #f)
|
|
(send dc clear)
|
|
|
|
(if clock-clip?
|
|
(let ([r (make-object region% dc)])
|
|
(send r set-arc 0. 60. 180. 180. clock-start clock-end)
|
|
(send dc set-clipping-region r))
|
|
(let ([mk-poly (lambda ()
|
|
(let ([r (make-object region% dc)])
|
|
(send r set-polygon octagon) r))]
|
|
[mk-circle (lambda ()
|
|
(let ([r (make-object region% dc)])
|
|
(send r set-ellipse 0. 60. 180. 180.) r))]
|
|
[mk-rect (lambda ()
|
|
(let ([r (make-object region% dc)])
|
|
(send r set-rectangle 100 -25 10 400) r))])
|
|
(case clip
|
|
[(none) (void)]
|
|
[(rect) (send dc set-clipping-rect 100 -25 10 400)]
|
|
[(rect2) (send dc set-clipping-rect 50 -25 10 400)]
|
|
[(poly) (send dc set-clipping-region (mk-poly))]
|
|
[(circle) (send dc set-clipping-region (mk-circle))]
|
|
[(rect+poly) (let ([r (mk-poly)])
|
|
(send r union (mk-rect))
|
|
(send dc set-clipping-region r))]
|
|
[(rect+circle) (let ([r (mk-circle)])
|
|
(send r union (mk-rect))
|
|
(send dc set-clipping-region r))]
|
|
[(poly-rect) (let ([r (mk-poly)])
|
|
(send r subtract (mk-rect))
|
|
(send dc set-clipping-region r))]
|
|
[(poly&rect) (let ([r (mk-poly)])
|
|
(send r intersect (mk-rect))
|
|
(send dc set-clipping-region r))]
|
|
[(roundrect) (let ([r (make-object region% dc)])
|
|
(send r set-rounded-rectangle 80 200 125 40 -0.25)
|
|
(send dc set-clipping-region r))]
|
|
[(polka)
|
|
(let ([c (send dc get-background)])
|
|
(send dc set-background (send the-color-database find-color "PURPLE"))
|
|
(send dc clear)
|
|
(send dc set-background c))
|
|
(let ([r (make-object region% dc)]
|
|
[w 30]
|
|
[s 10])
|
|
(let xloop ([x 0])
|
|
(if (> x 300)
|
|
(send dc set-clipping-region r)
|
|
(let yloop ([y 0])
|
|
(if (> y 500)
|
|
(xloop (+ x w s))
|
|
(let ([r2 (make-object region% dc)])
|
|
(send r2 set-ellipse x y w w)
|
|
(send r union r2)
|
|
(yloop (+ y w s))))))))
|
|
(send dc clear)])))
|
|
|
|
; check default pen/brush:
|
|
(send dc draw-rectangle 0 0 5 5)
|
|
(send dc draw-line 0 0 20 6)
|
|
|
|
(draw-series dc pen0s pen0t pen0x "0 x 0" 5 0 0 #f)
|
|
|
|
(draw-series dc pen1s pen1t pen1x "1 x 1" 70 0 1 #f)
|
|
|
|
(draw-series dc pen2s pen2t pen2x "2 x 2" 135 0 2 #t)
|
|
|
|
(unless clock-clip?
|
|
(let ([r (send dc get-clipping-region)])
|
|
(if (eq? clip 'none)
|
|
(when r
|
|
(error 'draw-test "shouldn't have been a clipping region"))
|
|
(let*-values ([(x y w h) (send r get-bounding-box)]
|
|
[(l) (list x y w h)])
|
|
(unless (andmap = l
|
|
(case clip
|
|
[(rect) '(100. -25. 10. 400.)]
|
|
[(rect2) '(50. -25. 10. 400.)]
|
|
[(poly circle poly-rect) '(0. 60. 180. 180.)]
|
|
[(rect+poly rect+circle) '(0. -25. 180. 400.)]
|
|
[(poly&rect) '(100. 60. 10. 180.)]
|
|
[(roundrect) '(80. 200. 125. 40.)]
|
|
[(polka) '(0. 0. 310. 510.)]))
|
|
(error 'draw-test "clipping region changed badly: ~a" l))))))
|
|
|
|
(let-values ([(w h) (send dc get-size)])
|
|
(unless (cond
|
|
[ps? #t]
|
|
[use-bad? #t]
|
|
[use-bitmap? (and (= w (* scale 400)) (= h (* scale 350)))]
|
|
[else (= w (send this get-width)) (= h (send this get-height))])
|
|
(error 'x "wrong size reported by get-size: ~a ~a; w & h is ~a ~a"
|
|
w h (send this get-width) (send this get-height))))
|
|
|
|
(send dc set-clipping-region #f)
|
|
|
|
(send dc end-page)
|
|
(send dc end-doc)))
|
|
|
|
(when save-filename
|
|
(send bm save-file save-filename save-file-format)
|
|
(set! save-filename #f))
|
|
|
|
'done)])])
|
|
(sequence (apply super-init args)))
|
|
vp)])
|
|
(make-object radio-box% #f '("Canvas" "Pixmap" "Bitmap" "Bad") hp0
|
|
(lambda (self event)
|
|
(set! use-bitmap? (< 0 (send self get-selection)))
|
|
(set! depth-one? (< 1 (send self get-selection)))
|
|
(set! use-bad? (< 2 (send self get-selection)))
|
|
(send canvas on-paint))
|
|
'(horizontal))
|
|
(make-object button% "Save" hp0
|
|
(lambda (b e)
|
|
(unless use-bitmap?
|
|
(error 'save-file "only available for pixmap/bitmap mode"))
|
|
(let ([f (put-file)])
|
|
(when f
|
|
(let ([format
|
|
(cond
|
|
[(regexp-match "[.]xbm$" f) 'xbm]
|
|
[(regexp-match "[.]xpm$" f) 'xpm]
|
|
[(regexp-match "[.]jpe?g$" f) 'jpeg]
|
|
[(regexp-match "[.]png$" f) 'png]
|
|
[else (error 'save-file "unknown suffix: ~e" f)])])
|
|
(set! save-filename f)
|
|
(set! save-file-format format)
|
|
(send canvas on-paint))))))
|
|
(make-object button% "PS" hp
|
|
(lambda (self event)
|
|
(send canvas on-paint #t)))
|
|
(make-object button% "Print" hp
|
|
(lambda (self event)
|
|
(send canvas on-paint 'print)))
|
|
(make-object choice% #f '("1" "*2" "/2") hp
|
|
(lambda (self event)
|
|
(send canvas set-scale (list-ref '(1 2 1/2) (send self get-selection)))))
|
|
(make-object check-box% "+10" hp
|
|
(lambda (self event)
|
|
(send canvas set-offset (if (send self get-value) 10 0))))
|
|
(make-object check-box% "Cyan" hp
|
|
(lambda (self event)
|
|
(set! cyan? (send self get-value))
|
|
(send canvas on-paint)))
|
|
(send (make-object check-box% "Icons" hp2
|
|
(lambda (self event)
|
|
(send canvas set-bitmaps (send self get-value))))
|
|
set-value #t)
|
|
(send (make-object check-box% "Stipples" hp2
|
|
(lambda (self event)
|
|
(send canvas set-stipples (send self get-value))))
|
|
set-value #t)
|
|
(make-object check-box% "Pixset" hp2
|
|
(lambda (self event)
|
|
(send canvas set-pixel-copy (send self get-value))))
|
|
(make-object choice% "Clip"
|
|
'("None" "Rectangle" "Rectangle2" "Octagon" "Circle" "Round Rectangle"
|
|
"Rectangle + Octagon" "Rectangle + Circle"
|
|
"Octagon - Rectangle" "Rectangle & Octagon" "Polka")
|
|
hp3
|
|
(lambda (self event)
|
|
(set! clip (list-ref
|
|
'(none rect rect2 poly circle roundrect rect+poly rect+circle poly-rect poly&rect polka)
|
|
(send self get-selection)))
|
|
(send canvas on-paint)))
|
|
(let ([clock (lambda (clip?)
|
|
(thread (lambda ()
|
|
(set! clock-clip? clip?)
|
|
(let loop ([c 0][swapped? #f][start 0.][end 0.])
|
|
(if (= c 32)
|
|
(if swapped?
|
|
(void)
|
|
(loop 0 #t 0. 0.))
|
|
(begin
|
|
(set! clock-start (if swapped? end start))
|
|
(set! clock-end (if swapped? start end))
|
|
(send canvas on-paint)
|
|
(sleep 0.25)
|
|
(loop (add1 c) swapped? (+ start (/ pi 8)) (+ end (/ pi 16))))))
|
|
(set! clock-clip? #f)
|
|
(set! clock-start #f)
|
|
(set! clock-end #f)
|
|
(send canvas on-paint))))])
|
|
(make-object button% "Clock" hp3 (lambda (b e) (clock #f)))
|
|
(make-object button% "Clip Clock" hp3 (lambda (b e) (clock #t)))
|
|
(make-object choice% #f
|
|
'("MrEd XOR" "PLT Middle" "PLT ^ MrEd" "MrEd ^ MrEd"
|
|
"MrEd~" "MrEd ^ MrEd~" "M^M~ Opaque" "M^M~ Red"
|
|
"PLT^PLT")
|
|
hp3
|
|
(lambda (self event)
|
|
(send canvas set-mask-ex-mode
|
|
(list-ref '(mred plt plt-mask mred^mred
|
|
mred~ mred^mred~ opaque-mred^mred~ red-mred^mred~
|
|
plt^plt)
|
|
(send self get-selection)))))))
|
|
|
|
(send f show #t))
|
|
|
|
; Canvas, Pixmaps, and Bitmaps:
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; get-pixel
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|
; begin-set-pixel
|
|
; end-set-pixel
|
|
; set-pixel
|