524 lines
16 KiB
Scheme
524 lines
16 KiB
Scheme
(unit/sig framework:text^
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(import mred-interfaces^
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[editor : framework:editor^]
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[preferences : framework:preferences^]
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[keymap : framework:keymap^]
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[gui-utils : framework:gui-utils^]
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[mzlib:function : mzlib:function^])
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(rename [-keymap% keymap%])
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(define-struct range (start end b/w-bitmap color caret-space?))
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(define-struct rectangle (left top right bottom b/w-bitmap color))
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;; wx: `default-wrapping?', add as the initial value for auto-wrap bitmap,
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;; unless matthew makes it primitive
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(define basic<%>
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(interface (text<%>)
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highlight-range
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get-styles-fixed
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set-styles-fixed
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move/copy-to-edit
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initial-autowrap-bitmap))
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(define basic-mixin
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(mixin (editor:basic<%> text<%>) (basic<%>) args
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(inherit get-canvases get-admin split-snip get-snip-position
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delete find-snip invalidate-bitmap-cache
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set-autowrap-bitmap
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set-file-format get-file-format
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get-style-list is-modified? change-style set-modified
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position-location get-extent)
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(private
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[b1 (box 0)]
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[b2 (box 0)]
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[b3 (box 0)]
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[b4 (box 0)]
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[range-rectangles null]
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[recompute-range-rectangles
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(lambda ()
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(let ([new-rectangles
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(lambda (range)
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(let* ([start (range-start range)]
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[end (range-end range)]
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[b/w-bitmap (range-b/w-bitmap range)]
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[color (range-color range)]
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[caret-space? (range-caret-space? range)]
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[start-eol? #f]
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[end-eol? (if (= start end)
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start-eol?
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#t)])
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(let-values ([(start-x top-start-y)
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(begin
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(position-location start b1 b2 #t start-eol? #t)
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(values (if caret-space?
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(+ 1 (unbox b1))
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(unbox b1))
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(unbox b2)))]
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[(end-x top-end-y)
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(begin (position-location end b1 b2 #t end-eol? #t)
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(values (unbox b1) (unbox b2)))]
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[(bottom-start-y)
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(begin (position-location start b1 b2 #f start-eol? #t)
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(unbox b2))]
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[(bottom-end-y)
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(begin (position-location end b1 b2 #f end-eol? #t)
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(unbox b2))])
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(cond
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[(= top-start-y top-end-y)
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(list
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(make-rectangle start-x
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top-start-y
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(if (= end-x start-x)
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(+ end-x 1)
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end-x)
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bottom-start-y
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b/w-bitmap
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color))]
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[else
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(list
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(make-rectangle start-x
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top-start-y
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'right-edge
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bottom-start-y
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b/w-bitmap
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color)
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(make-rectangle 'left-edge
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bottom-start-y
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'max-width
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top-end-y
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b/w-bitmap
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color)
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(make-rectangle 'left-edge
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top-end-y
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end-x
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bottom-end-y
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b/w-bitmap
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color))]))))]
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[invalidate-rectangles
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(lambda (rectangles)
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(let-values ([(min-left max-right)
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(let loop ([left #f]
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[right #f]
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[canvases (get-canvases)])
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(cond
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[(null? canvases)
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(values left right)]
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[else
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(let-values ([(this-left this-right)
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(send (car canvases)
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call-as-primary-owner
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(lambda ()
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(send (get-admin) get-view b1 b2 b3 b4)
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(let* ([this-left (unbox b1)]
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[this-width (unbox b3)]
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[this-right (+ this-left this-width)])
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(values this-left
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this-right))))])
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(if (and left right)
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(loop (min this-left left)
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(max this-right right)
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(cdr canvases))
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(loop this-left
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this-right
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(cdr canvases))))]))])
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(let loop ([left #f]
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[top #f]
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[right #f]
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[bottom #f]
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[rectangles rectangles])
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(cond
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[(null? rectangles)
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(when left
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(invalidate-bitmap-cache left top (- right left) (- bottom top)))]
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[else (let* ([r (car rectangles)]
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[rleft (rectangle-left r)]
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[rright (rectangle-right r)]
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[rtop (rectangle-top r)]
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[rbottom (rectangle-bottom r)]
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[this-left (if (number? rleft)
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rleft
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min-left)]
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[this-right (if (number? rright)
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rright
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max-right)]
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[this-bottom rbottom]
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[this-top rtop])
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(if (and left top right bottom)
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(loop (min this-left left)
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(min this-top top)
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(max this-right right)
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(max this-bottom bottom)
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(cdr rectangles))
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(loop this-left
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this-top
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this-right
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this-bottom
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(cdr rectangles))))]))))]
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[old-rectangles range-rectangles])
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(set! range-rectangles
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(mzlib:function:foldl (lambda (x l) (append (new-rectangles x) l))
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null ranges))
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(invalidate-rectangles (append old-rectangles
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range-rectangles))))]
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[ranges null]
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[pen (make-object pen% "BLACK" 0 'solid)]
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[brush (make-object brush% "black" 'solid)])
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(public
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;; the bitmap is used in b/w and the color is used in color.
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[highlight-range
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(opt-lambda (start end color bitmap [caret-space? #f])
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(let ([l (make-range start end bitmap color caret-space?)])
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(set! ranges (cons l ranges))
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(recompute-range-rectangles)
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(lambda ()
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(set! ranges
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(let loop ([r ranges])
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(cond
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[(null? r) r]
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[else (if (eq? (car r) l)
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(cdr r)
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(cons (car r) (loop (cdr r))))])))
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(recompute-range-rectangles))))])
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(rename [super-on-paint on-paint])
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(override
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[on-paint
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(lambda (before dc left-margin top-margin right-margin bottom-margin dx dy draw-caret)
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(super-on-paint before dc left-margin top-margin right-margin bottom-margin dx dy draw-caret)
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(for-each
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(lambda (rectangle)
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(let-values ([(view-x view-y view-width view-height)
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(begin
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(send (get-admin) get-view b1 b2 b3 b4)
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(values (unbox b1)
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(unbox b2)
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(unbox b3)
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(unbox b4)))])
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(let* ([old-pen (send dc get-pen)]
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[old-brush (send dc get-brush)]
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[b/w-bitmap (rectangle-b/w-bitmap rectangle)]
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[color (let* ([rc (rectangle-color rectangle)]
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[tmpc (make-object color% 0 0 0)])
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(if rc
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(begin (send dc try-color rc tmpc)
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(and (<= (max (abs (- (send rc red) (send tmpc red)))
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(abs (- (send rc blue) (send tmpc blue)))
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(abs (- (send rc green) (send tmpc green))))
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15)
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rc))
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rc))]
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[first-number (lambda (x y) (if (number? x) x y))]
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[left (max left-margin (first-number (rectangle-left rectangle) view-x))]
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[top (max top-margin (rectangle-top rectangle))]
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[right (min right-margin
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(if (number? (rectangle-right rectangle))
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(rectangle-right rectangle)
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(+ view-x view-width)))]
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[bottom (min bottom-margin (rectangle-bottom rectangle))]
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[width (max 0 (- right left))]
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[height (max 0 (- bottom top))])
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(let/ec k
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(cond
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[(and before color)
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(send pen set-color color)
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(send brush set-color color)]
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[(and (not before) (not color) b/w-bitmap)
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(send pen set-stipple b/w-bitmap)
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(send brush set-stipple b/w-bitmap)]
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[else (k (void))])
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(send dc set-pen pen)
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(send dc set-brush brush)
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(send dc draw-rectangle
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(+ left dx)
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(+ top dy)
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width
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height)
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(send dc set-pen old-pen)
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(send dc set-brush old-brush)))))
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range-rectangles))])
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(private
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[styles-fixed? #f]
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[styles-fixed-edit-modified? #f])
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(public
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[get-styles-fixed (lambda () styles-fixed?)]
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[set-styles-fixed (lambda (b) (set! styles-fixed? b))])
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(rename
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[super-on-change-style on-change-style]
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[super-after-change-style after-change-style]
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[super-after-insert after-insert])
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(override
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[on-change-style
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(lambda (start len)
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(when styles-fixed?
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(set! styles-fixed-edit-modified? (is-modified?)))
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(super-on-change-style start len))]
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[after-insert
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(lambda (start len)
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(when styles-fixed?
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(change-style (send (get-style-list) find-named-style "Standard")
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start
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(+ start len)))
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(super-after-insert start len))]
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[after-change-style
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(lambda (start len)
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(super-after-change-style start len)
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(when styles-fixed?
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(set-modified styles-fixed-edit-modified?)))])
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(public
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[move/copy-to-edit
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(lambda (dest-edit start end dest-position)
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(let ([insert-edit (ivar dest-edit insert)])
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(split-snip start)
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(split-snip end)
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(let loop ([snip (find-snip end 'before)])
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(cond
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[(or (not snip) (< (get-snip-position snip) start))
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(void)]
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[else
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(let ([prev (send snip previous)]
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[released/copied (if (send snip release-from-owner)
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snip
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(let* ([copy (send snip copy)]
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[snip-start (get-snip-position snip)]
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[snip-end (+ snip-start (send snip get-count))])
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(delete snip-start snip-end)
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snip))])
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(insert-edit released/copied dest-position dest-position)
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(loop prev))]))))])
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(public
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[initial-autowrap-bitmap (lambda () #f)])
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(sequence
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(apply super-init args)
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(set-autowrap-bitmap (initial-autowrap-bitmap)))))
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(define searching<%>
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(interface ()
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find-string-embedded))
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(define searching-mixin
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(mixin (editor:keymap<%> basic<%>) (searching<%>) args
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(inherit get-end-position get-start-position last-position
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find-string get-snip-position get-admin find-snip)
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(public
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[find-string-embedded
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(opt-lambda (str [direction 'forward] [start 'start]
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[end 'eof] [get-start #t]
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[case-sensitive? #t] [pop-out? #f])
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(unless (member direction '(forward backward))
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(error 'find-string-embedded
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"expected 'forward or 'backward as first argument, got: ~e" direction))
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(let/ec k
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(let* ([start (if (eq? start 'start)
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(get-start-position)
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start)]
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[end (if (eq? 'eof end)
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(if (eq? direction 'forward)
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(last-position)
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0)
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end)]
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[flat (find-string str direction
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start end get-start
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case-sensitive?)]
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[pop-out
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(lambda ()
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(let ([admin (get-admin)])
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(if (is-a? admin editor-snip-editor-admin%)
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(let* ([snip (send admin get-snip)]
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[edit-above (send (send snip get-admin) get-media)]
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[pos (send edit-above get-snip-position snip)])
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(send edit-above
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find-string-embedded
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str
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direction
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(if (eq? direction 'forward) (add1 pos) pos)
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'eof get-start
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case-sensitive? pop-out?))
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(values this #f))))])
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(let loop ([current-snip (find-snip start
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(if (eq? direction 'forward)
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'after-or-none
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'before-or-none))])
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(let ([next-loop
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(lambda ()
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(if (eq? direction 'forward)
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(loop (send current-snip next))
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(loop (send current-snip previous))))])
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(cond
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[(not current-snip)
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(if (and (not flat) pop-out?)
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(pop-out)
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(values this flat))]
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[(and (not flat)
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(let* ([start (get-snip-position current-snip)]
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[end (+ start (send current-snip get-count))])
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(if (eq? direction 'forward)
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(and (<= start flat)
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(< flat end))
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(and (< start flat)
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(<= flat end)))))
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(if pop-out?
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(pop-out)
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(values this #f))]
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[(is-a? current-snip original:editor-snip%)
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(let-values ([(embedded embedded-pos)
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(let ([media (send current-snip get-this-media)])
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(and (not (null? media))
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(send media find-string-embedded str
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direction
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(if (eq? 'forward direction)
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0
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(send media last-position))
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'eof
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get-start case-sensitive?)))])
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(if (not embedded-pos)
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(next-loop)
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(values embedded embedded-pos)))]
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[else (next-loop)]))))))])
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(rename [super-get-keymaps get-keymaps])
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(override
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[get-keymaps
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(lambda ()
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(cons (keymap:get-search) (super-get-keymaps)))])
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(sequence
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(apply super-init args))))
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(define return<%> (interface (text<%>)))
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(define return-mixin
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(mixin (text<%>) (return<%>) (return . args)
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(rename [super-on-local-char on-local-char])
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(override
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[on-local-char
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(lambda (key)
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(let ([cr-code #\return]
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[lf-code #\newline]
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[code (send key get-key-code)])
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(or (and (char? code)
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(or (char=? lf-code code)
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(char=? cr-code code))
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(return))
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(super-on-local-char key))))])
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(sequence
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(apply super-init args))))
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(define info<%> (interface (editor:basic<%> text<%>)))
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(define info-mixin
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(mixin (editor:keymap<%> text<%>) (info<%>) args
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(inherit get-start-position get-end-position get-canvas
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run-after-edit-sequence)
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(rename [super-after-set-position after-set-position]
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[super-after-edit-sequence after-edit-sequence]
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[super-on-edit-sequence on-edit-sequence]
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[super-after-insert after-insert]
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[super-after-delete after-delete]
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[super-set-overwrite-mode set-overwrite-mode]
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[super-set-anchor set-anchor])
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(private
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[enqueue-for-frame
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(lambda (ivar-sym tag)
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(run-after-edit-sequence
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(rec from-enqueue-for-frame
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(lambda ()
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(let ([canvas (get-canvas)])
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(when canvas
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((ivar/proc (send canvas get-top-level-window) ivar-sym))))))
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tag))])
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(override
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[set-anchor
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(lambda (x)
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(super-set-anchor x)
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(enqueue-for-frame 'anchor-status-changed
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'framework:anchor-status-changed))]
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[set-overwrite-mode
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(lambda (x)
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(super-set-overwrite-mode x)
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(enqueue-for-frame 'overwrite-status-changed
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'framework:overwrite-status-changed))]
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[after-set-position
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(lambda ()
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(super-after-set-position)
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(enqueue-for-frame 'editor-position-changed
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'framework:editor-position-changed))]
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[after-insert
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(lambda (start len)
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(super-after-insert start len)
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(enqueue-for-frame 'editor-position-changed
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'framework:editor-position-changed))]
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[after-delete
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(lambda (start len)
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(super-after-delete start len)
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(enqueue-for-frame 'editor-position-changed
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'framework:editor-position-changed))])
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(sequence
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(apply super-init args))))
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(define clever-file-format<%> (interface (text<%>)))
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(define clever-file-format-mixin
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(mixin (text<%>) (clever-file-format<%>) args
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(inherit get-file-format set-file-format find-first-snip)
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(rename [super-on-save-file on-save-file]
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[super-after-save-file after-save-file])
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(private [restore-file-format void])
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(override
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[after-save-file
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(lambda (success)
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(restore-file-format)
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(super-after-save-file success))]
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[on-save-file
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(let ([has-non-string-snips
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(lambda ()
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(let loop ([s (find-first-snip)])
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(cond
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[(not s) #f]
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[(is-a? s original:string-snip%)
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(loop (send s next))]
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[else #t])))])
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(lambda (name format)
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(when (and (or (eq? format 'same)
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(eq? format 'copy))
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(not (eq? (get-file-format)
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'standard)))
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(cond
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[(eq? format 'copy)
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(set! restore-file-format
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(let ([f (get-file-format)])
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(lambda ()
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(set! restore-file-format void)
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(set-file-format f))))
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(set-file-format 'standard)]
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|
[(and (has-non-string-snips)
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(or (not (preferences:get 'framework:verify-change-format))
|
|
(gui-utils:get-choice "Save this file as plain text?" "No" "Yes")))
|
|
(set-file-format 'standard)]
|
|
[else (void)]))
|
|
(or (super-on-save-file name format)
|
|
(begin
|
|
(restore-file-format)
|
|
#f))))])
|
|
(sequence (apply super-init args))))
|
|
|
|
(define basic% (basic-mixin (editor:basic-mixin text%)))
|
|
(define -keymap% (editor:keymap-mixin basic%))
|
|
(define return% (return-mixin -keymap%))
|
|
(define file% (editor:file-mixin -keymap%))
|
|
(define clever-file-format% (clever-file-format-mixin file%))
|
|
(define backup-autosave% (editor:backup-autosave-mixin clever-file-format%))
|
|
(define searching% (searching-mixin backup-autosave%))
|
|
(define info% (info-mixin (editor:info-mixin searching%)))) |