Add typed version of insert-large-letters.

svn: r11472
This commit is contained in:
Sam Tobin-Hochstadt 2008-08-28 21:53:25 +00:00
commit 9a26da1c2a
5 changed files with 328 additions and 2 deletions

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@ -0,0 +1,19 @@
#lang scheme
(require mred/mred)
(provide bitmap-message%)
(define bitmap-message%
(class canvas%
(inherit min-width min-height get-dc)
(define bm #f)
(define/override (on-paint)
(when bm
(let ([dc (get-dc)])
(send dc draw-bitmap bm 0 0))))
(define/public (set-bm b)
(set! bm b)
(min-width (send bm get-width))
(min-height (send bm get-height)))
(super-new (stretchable-width #f)
(stretchable-height #f))))

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@ -0,0 +1,188 @@
#lang typed-scheme
(require "mred-typed.ss"
scheme/class
string-constants/string-constant)
(provide insert-large-letters)
(: insert-large-letters (String Char (Instance Scheme:Text%) Any -> Void))
(define (insert-large-letters comment-prefix comment-character edit parent)
(let ([str (make-large-letters-dialog comment-prefix comment-character #f)])
(when (and str
(not (equal? str "")))
(render-large-letters comment-prefix comment-character (get-chosen-font) str edit)
(void))))
(preferences:set-default 'drscheme:large-letters-font #f (λ: ([x : Any])
(or (and (pair? x)
(string? (car x))
(let ([i (cdr x)])
(and (integer? i)
(<= 1 i 255))))
(not x))))
(: get-default-font (-> (Instance Font%)))
(define (get-default-font)
(send (send (editor:get-standard-style-list)
find-named-style
"Standard")
get-font))
(: get-chosen-font (-> (Instance Font%)))
(define (get-chosen-font)
(let ([pref-val (preferences:get 'drscheme:large-letters-font)])
(cond
[pref-val
(let ([candidate (send the-font-list find-or-create-font (cdr pref-val) (car pref-val) 'default 'normal 'normal)])
(if (equal? (send candidate get-face) (car pref-val))
candidate
(get-default-font)))]
[else
(get-default-font)])))
(define columns-string "~a columns")
;; make-large-letters-dialog : string char top-level-window<%> -> void
(: make-large-letters-dialog (String Char Any -> (Option String)))
(define (make-large-letters-dialog comment-prefix comment-character parent)
(define dlg (new dialog%
[parent parent]
[width 700]
[label (string-constant large-semicolon-letters)]))
(define: text-field : (Instance Text-Field%)
(new text-field%
[parent dlg]
[label (string-constant text-to-insert)]
[callback (λ: ([x : Any] [y : Any]) (update-txt (send text-field get-value)))]))
(: info-bar (Instance Horizontal-Panel%))
(define info-bar (new horizontal-panel%
[parent dlg]
[stretchable-height #f]))
(define: font-choice : (Instance Choice%)
(new choice%
[label (string-constant fonts)]
[parent info-bar]
[choices (get-face-list)]
[callback
(λ: ([x : Any] [y : Any])
(let ([old (preferences:get 'drscheme:large-letters-font)])
(preferences:set 'drscheme:large-letters-font
(cons (send font-choice get-string-selection)
(if old
(cdr old)
(send (get-default-font) get-point-size))))
(update-txt (send text-field get-value))))]))
(: count (Instance Message%))
(define count (new message% [label (format columns-string 1000)] [parent info-bar]))
(: pane1 (Instance Horizontal-Pane%))
(define pane1 (new horizontal-pane% (parent info-bar)))
(: dark-msg (Instance Bitmap-Message%))
(define dark-msg (new bitmap-message% [parent info-bar]))
(: pane2 (Instance Horizontal-Pane%))
(define pane2 (new horizontal-pane% (parent info-bar)))
(: txt (Instance Scheme:Text%))
(define txt (new scheme:text%))
(: ec (Instance Editor-Canvas%))
(define ec (new editor-canvas% [parent dlg] [editor txt]))
(: button-panel (Instance Horizontal-Panel%))
(define button-panel (new horizontal-panel%
[parent dlg]
[stretchable-height #f]
[alignment '(right center)]))
(define: ok? : Boolean #f)
(: ok Any)
(: cancel Any)
(define-values (ok cancel)
(gui-utils:ok/cancel-buttons button-panel
(λ: ([x : Any] [y : Any]) (set! ok? #t) (send dlg show #f))
(λ: ([x : Any] [y : Any]) (send dlg show #f))))
(: update-txt (String -> Any))
(define (update-txt str)
(send txt begin-edit-sequence)
(send txt lock #f)
(send txt delete 0 (send txt last-position))
(let ([bm (render-large-letters comment-prefix comment-character (get-chosen-font) str txt)])
(send ec set-line-count (+ 1 (send txt last-paragraph)))
(send txt lock #t)
(send txt end-edit-sequence)
(send count set-label (format columns-string (get-max-line-width txt)))
(send dark-msg set-bm bm)))
;; CHANGE - get-face can return #f
(let ([face (send (get-chosen-font) get-face)])
(when face
(send font-choice set-string-selection face)))
(send txt auto-wrap #f)
(update-txt " ")
(send text-field focus)
(send dlg show #t)
(and ok? (send text-field get-value)))
(: get-max-line-width ((Instance Scheme:Text%) -> Number))
(define (get-max-line-width txt)
(let loop ([i (+ (send txt last-paragraph) 1)]
[m #{0 :: Number}])
(cond
[(zero? i) m]
[else (loop (- i 1)
(max m (- (send txt paragraph-end-position (- i 1))
(send txt paragraph-start-position (- i 1)))))])))
(: render-large-letters (String Char (Instance Font%) String (Instance Scheme:Text%) -> (Instance Bitmap%)))
(define (render-large-letters comment-prefix comment-character the-font str edit)
(define bdc (make-object bitmap-dc% (make-object bitmap% 1 1 #t)))
(define-values (tw raw-th td ta) (send bdc get-text-extent str the-font))
(define th (let-values ([(_1 h _2 _3) (send bdc get-text-extent "X" the-font)])
(max raw-th h)))
(define tmp-color (make-object color%))
(: get-char (Number Number -> Char))
(define (get-char x y)
(send bdc get-pixel x y tmp-color)
(let ([red (send tmp-color red)])
(if (= red 0)
comment-character
#\space)))
(define bitmap
(make-object bitmap%
(max 1 (inexact->exact tw))
(inexact->exact th)
#t))
(: fetch-line (Number -> String))
(define (fetch-line y)
(let: loop : String ([x : Number (send bitmap get-width)]
[chars : (Listof Char) null])
(cond
[(zero? x) (apply string chars)]
[else (loop (- x 1) (cons (get-char (- x 1) y) chars))])))
(send bdc set-bitmap bitmap)
(send bdc clear)
(send bdc set-font the-font)
(send bdc draw-text str 0 0)
(send edit begin-edit-sequence)
(let ([start (send edit get-start-position)]
[end (send edit get-end-position)])
(send edit delete start end)
(send edit insert "\n" start start)
(let loop ([y (send bitmap get-height)])
(unless (zero? y)
(send edit insert (fetch-line (- y 1)) start start)
(send edit insert comment-prefix start start)
(send edit insert "\n" start start)
(loop (- y 1)))))
(send edit end-edit-sequence)
(send bdc set-bitmap #f)
bitmap)
;(make-large-letters-dialog ";" #\; #f)

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@ -0,0 +1,103 @@
#lang typed-scheme
;(require mred/mred)
(provide (all-defined-out))
(define-type-alias Bitmap% (Class (Number Number Boolean)
()
([get-width (-> Number)]
[get-height (-> Number)])))
(define-type-alias Font-List% (Class () () ([find-or-create-font (Any * -> (Instance Font%))])))
(define-type-alias Font% (Class () () ([get-face (-> (Option String))]
[get-point-size (-> Number)])))
(define-type-alias Dialog% (Class ()
([parent Any] [width Number] [label String])
([show (Any -> Void)])))
(define-type-alias Text-Field% (Class ()
([parent Any] [callback Any] [label String])
([get-value (-> String)]
[focus (-> String)])))
(define-type-alias Horizontal-Panel% (Class ()
([parent Any]
[stretchable-height Any #t]
[alignment (List Symbol Symbol) #t])
()))
(define-type-alias Choice% (Class ()
([parent Any] [label String] [choices List] [callback Any])
([get-string-selection (-> (Option String))]
[set-string-selection (String -> Void)])))
(define-type-alias Message% (Class ()
([parent Any] [label String])
([set-label ((U String (Instance Bitmap%)) -> Void)])))
(define-type-alias Horizontal-Pane% (Class ()
([parent Any])
()))
(define-type-alias Editor-Canvas% (Class ()
([parent Any] [editor Any])
([set-line-count (Number -> Void)])))
(define-type-alias Bitmap-DC% (Class ((Instance Bitmap%))
()
([get-text-extent (String (Instance Font%) -> (values Number Number Number Number))]
[get-pixel (Number Number (Instance Color%) -> Boolean)]
[set-bitmap ((Option (Instance Bitmap%)) -> Void)]
[clear (-> Void)]
[set-font ((Instance Font%) -> Void)]
[draw-text (String Number Number -> Void)])))
(define-type-alias Color% (Class () () ([red (-> Number)])))
(define-type-alias Style-List% (Class ()
()
([find-named-style
(String -> (Instance (Class ()
()
([get-font (-> (Instance Font%))]))))])))
(define-type-alias Scheme:Text% (Class ()
()
([begin-edit-sequence (-> Void)]
[end-edit-sequence (-> Void)]
[lock (Boolean -> Void)]
[last-position (-> Number)]
[last-paragraph (-> Number)]
[delete (Number Number -> Void)]
[auto-wrap (Any -> Void)]
[paragraph-end-position (Number -> Number)]
[paragraph-start-position (Number -> Number)]
[get-start-position (-> Number)]
[get-end-position (-> Number)]
[insert (String Number Number -> Void)])))
(require/typed mred/mred
[the-font-list (Instance Font-List%)]
[dialog% Dialog%]
[text-field% Text-Field%]
[horizontal-panel% Horizontal-Panel%]
[choice% Choice%]
[get-face-list (-> (Listof String))]
[message% Message%]
[horizontal-pane% Horizontal-Pane%]
[editor-canvas% Editor-Canvas%]
[bitmap-dc% Bitmap-DC%]
[bitmap% Bitmap%]
[color% Color%])
(require/typed framework/framework
[preferences:set-default (Symbol Any Any -> Void)]
[preferences:set (Symbol Any -> Void)]
[editor:get-standard-style-list
(-> (Instance Style-List%))]
[scheme:text% Scheme:Text%]
[gui-utils:ok/cancel-buttons (Any (Any Any -> Any) (Any Any -> Any) -> (values Any Any))])
(require/typed "prefs-contract.ss"
[preferences:get-drscheme:large-letters-font (-> (U #f (Pair String Number)))])
(require (only-in "prefs-contract.ss" preferences:get))
(provide preferences:get preferences:get-drscheme:large-letters-font)
(define-type-alias Bitmap-Message% (Class ()
([parent Any])
([set-bm ((Instance Bitmap%) -> Void)])))
(require/typed "bitmap-message.ss"
[bitmap-message% Bitmap-Message%])

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#lang scheme/base
(require (for-syntax scheme/base)
framework/framework)
(provide (rename-out [-preferences:get preferences:get])
preferences:get-drscheme:large-letters-font)
(define (preferences:get-drscheme:large-letters-font)
(preferences:get 'drscheme:large-letters-font))
(define-syntax (-preferences:get stx)
(syntax-case stx (quote)
[(_ (quote sym))
(with-syntax ([nm (datum->syntax stx (string->symbol (string-append "preferences:get" "-" (symbol->string (syntax-e #'sym)))))])
(syntax/loc stx (nm)))]))

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@ -25,7 +25,7 @@ module browser threading seems wrong.
mrlib/include-bitmap
"drsig.ss"
"auto-language.ss"
"insert-large-letters.ss"
"insert-large-letters-typed.ss"
"first-line-text.ss"
mrlib/switchable-button
mrlib/cache-image-snip
@ -3956,4 +3956,4 @@ module browser threading seems wrong.
(send frame update-toolbar-visibility)
(send frame show #t)
(set! first-frame? #f)
frame)))
frame)))