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Overview
| Comment: | CHICKEN 5.1 keyword and symbol compatibility patch, thanks to Ricardo Herdt |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
79ae9e81f883e51df8f57f4ec4788008 |
| User & Date: | murphy 2019-11-27 23:04:30 |
Context
|
2019-11-27
| ||
| 23:06 | Bumped egg version to 1.9.2 check-in: f43fe0f1d1 user: murphy tags: trunk, v1.9.2 | |
| 23:04 | CHICKEN 5.1 keyword and symbol compatibility patch, thanks to Ricardo Herdt check-in: 79ae9e81f8 user: murphy tags: trunk | |
|
2018-11-08
| ||
| 13:04 | Documented CHICKEN 5 import syntax check-in: 62d4b6a7a5 user: murphy tags: trunk | |
Changes
Changes to chicken-5/iup-base.scm.
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;; {{{ Data types
(foreign-declare
"#include <ffi.h>\n"
"#include <locale.h>\n"
"#include <im.h>\n"
"#include <im_binfile.h>\n"
"#include <iup.h>\n"
"#include <iupim.h>\n"
"typedef struct Iclass_ Iclass;\n"
"struct Ihandle_ { char sig[4]; Iclass *iclass; /* ... */ } ;\n"
"extern char *iupClassCallbackGetFormat(Iclass *iclass, const char *name);\n")
(define *ihandle-tag* "Ihandle")
(define ihandle? (cut tagged-pointer? <> *ihandle-tag*))
(define (ihandle->pointer nonnull?)
(if nonnull?
(lambda (handle)
(ensure ihandle? handle)
handle)
(lambda (handle)
(ensure (disjoin not ihandle?) handle)
handle)))
(define (pointer->ihandle nonnull?)
(if nonnull?
(lambda (handle)
(ensure pointer? handle)
(tag-pointer handle *ihandle-tag*))
(lambda (handle)
(and handle (tag-pointer handle *ihandle-tag*)))))
(define (ihandle-list->pointer-vector lst)
(let ([ptrs (make-pointer-vector (add1 (length lst)) #f)])
(do-ec (:list handle (index i) lst)
(begin
(ensure ihandle? handle)
(pointer-vector-set! ptrs i handle)))
ptrs))
(define (istatus->integer status)
(case status
[(error) +1]
[(opened invalid ignore) -1]
[(default) -2]
[(close #f) -3]
[(continue) -4]
[else (if (integer? status) status 0)]))
(define (integer->istatus status)
(case status
[(+1) 'error]
[( 0) #t]
[(-1) 'ignore]
[(-2) 'default]
[(-3) #f]
[(-4) 'continue]
[else status]))
(define (iname->string default-case)
(let ([change-case
(case default-case
[(upcase) string-upcase]
[(downcase) string-downcase]
[else (error 'iname->string "unsupported default case" default-case)])])
(lambda (name)
(cond
[(or (not name) (string? name))
name]
[(symbol? name)
(change-case (string-translate (symbol->string name) #\- #\_))]
[else
(error 'iname->string "bad name" name)]))))
(define (string->iname default-case)
(let ([specials
(irregex
(case default-case
[(upcase) "[-a-z]"]
[(downcase) "[-A-Z]"]
[else (error 'string->iname "unsupported default case" default-case)]))])
(lambda (name)
(cond
[(or (not name) (irregex-search specials name))
name]
[else
(string->symbol (string-downcase (string-translate name #\_ #\-)))]))))
(include "iup-types.scm")
;; }}}
;; {{{ Support macros and functions
(define-syntax :children
(syntax-rules ()
[(:children cc child handle)
(:do cc ([child (child-ref handle 0)]) child ((sibling child)))]))
(define-syntax optional-args
(syntax-rules ()
[(optional-args [name default] ...)
(lambda (args) (let-optionals args ([name default] ...) (list name ...)))]))
(define ((make-constructor-procedure proc #!key [apply-args values]) . args)
(let more ([keys '()] [key-args '()] [pos-args '()] [rest args])
(cond
[(null? rest)
(let ([handle (apply proc (apply-args (reverse! pos-args)))])
(do-ec (:parallel (:list key keys) (:list arg key-args))
((if (procedure? arg) callback-set! attribute-set!) handle key arg))
handle)]
[(keyword? (car rest))
(more
(cons (car rest) keys) (cons (cadr rest) key-args) pos-args
(cddr rest))]
[else
(more
keys key-args (cons (car rest) pos-args)
(cdr rest))])))
;; }}}
;; {{{ System functions
(define iup-version
(foreign-lambda c-string "IupVersion"))
(define load/led
(letrec ([load/raw (foreign-lambda c-string "IupLoad" c-string)])
(lambda (file)
(and-let* ([status (load/raw file)])
(error 'load/led status))
(void))))
;; }}}
;; {{{ Attribute functions
(define attribute-set!
(letrec ([set/string! (foreign-safe-lambda void "IupStoreAttribute" ihandle iname/upcase c-string)]
[set/handle! (foreign-safe-lambda void "IupSetAttributeHandle" ihandle iname/upcase ihandle)])
(lambda (handle name value)
(cond
[(or (not value) (string? value))
(set/string! handle name value)]
[(ihandle? value)
(set/handle! handle name value)]
[(boolean? value)
(set/string! handle name (if value "YES" "NO"))]
[else
(set/string! handle name (->string value))]))))
(define attribute-reset!
(foreign-safe-lambda void "IupResetAttribute" ihandle iname/upcase))
(define attribute
(getter-with-setter
(foreign-safe-lambda c-string "IupGetAttribute" ihandle iname/upcase)
attribute-set!))
(define attributes
(foreign-primitive scheme-object ([ihandle handle])
"int n = IupGetAllAttributes(handle, NULL, 0);"
"if (n > 0) {"
" char **buf = (char **) alloca(n * sizeof(char *));"
" if (IupGetAllAttributes(handle, buf, n) == n) {"
" int i, m = C_SIZEOF_LIST(n);"
" for (i = 0; i < n; ++i) m += C_SIZEOF_STRING(strlen(buf[i]));"
" C_word *mrk = C_alloc(m), lst = C_SCHEME_END_OF_LIST;"
" for (i = n-1; i >= 0; --i) lst = C_pair(&mrk, C_string2(&mrk, buf[i]), lst);"
" C_return(lst);"
" }"
"}"
"C_return(C_SCHEME_END_OF_LIST);"))
(define handle-name-set!
(letrec ([handle-set! (foreign-lambda ihandle "IupSetHandle" iname/downcase ihandle)])
(lambda (handle name)
(handle-set! (or name (handle-name handle)) (and name handle)))))
(define handle-name
(getter-with-setter
(foreign-lambda iname/downcase "IupGetName" nonnull-ihandle)
handle-name-set!))
(define handle-ref
(foreign-lambda ihandle "IupGetHandle" iname/downcase))
;; }}}
;; {{{ Event functions
(define main-loop
(letrec ([loop (foreign-safe-lambda istatus "IupMainLoop")])
(lambda ()
(let ([status (loop)])
(case status
[(#t) (void)]
[else (error 'main-loop (format "error in IUP main loop (~s)" status))])))))
(define main-loop-step
(letrec ([loop-step (foreign-safe-lambda istatus "IupLoopStep")]
[loop-step/wait (foreign-safe-lambda istatus "IupLoopStepWait")])
(lambda (poll?)
(let ([status ((if poll? loop-step loop-step/wait))])
(case status
[(error) (error 'main-loop-step "error in IUP main loop")]
[else status])))))
(define main-loop-level
(foreign-lambda int "IupMainLoopLevel"))
(define main-loop-exit
(foreign-lambda void "IupExitLoop"))
(define main-loop-flush
(foreign-safe-lambda void "IupFlush"))
(define (make-wrapper cif)
(let-location ([proc c-pointer #f])
(let ([closure
((foreign-lambda* (c-pointer "ffi_closure") ([(nonnull-c-pointer c-pointer) proc])
"C_return(ffi_closure_alloc(sizeof(ffi_closure), proc));" )
(location proc))])
................................................................................
(define (wrapper-id proc)
(and proc (pointer->address proc)))
(define wrapper-destroy!
(foreign-lambda void "ffi_closure_free" (nonnull-c-pointer "ffi_closure")))
(define-values (registry-ref registry-add! registry-remove! registry-clear!)
(let ([registry (make-hash-table = number-hash)])
(values
(lambda (id)
(cdr (hash-table-ref registry id)))
(lambda (handle cif data)
(let*-values ([(closure proc) (make-wrapper cif)]
[(id) (pointer->address proc)])
(hash-table-set!
registry id
(cons closure data))
(hash-table-update!/default
registry (pointer->address handle)
(cut cons id <>) '())
proc))
(lambda (handle proc)
(cond
[(wrapper-id proc)
=> (lambda (id)
(hash-table-update!/default
registry (pointer->address handle)
(cut delete id <> =) '())
(let ([closure (car (hash-table-ref registry id))])
(hash-table-delete! registry id)
(wrapper-destroy! closure)))]))
(lambda (handle)
(let* ([key (pointer->address handle)]
[ids (hash-table-ref/default registry key '())])
(hash-table-delete! registry key)
(do-ec (:list id ids)
(let ([closure (car (hash-table-ref registry id))])
(hash-table-delete! registry id)
(wrapper-destroy! closure))))))))
(define call-interface
(let ([interfaces (make-hash-table string=? string-hash)])
(lambda (sig)
(or
(hash-table-ref/default interfaces sig #f)
(let ([cif
................................................................................
(string-length sig) sig)])
(unless cif
(error 'callback-set! "unsupported signature"))
(hash-table-set! interfaces sig cif)
cif)))))
(define-external (callback_entry [(c-pointer "ffi_cif") cif] [c-pointer pret] [(c-pointer c-pointer) args] [c-pointer proc]) void
(define frame-arg/ubyte!
(foreign-lambda* unsigned-byte ([(c-pointer c-pointer) args] [size_t i]) "C_return(*(uint8_t *)args[i]);"))
(define frame-arg/int!
(foreign-lambda* int ([(c-pointer c-pointer) args] [size_t i]) "C_return(*(int *)args[i]);"))
(define frame-arg/float!
(foreign-lambda* float ([(c-pointer c-pointer) args] [size_t i]) "C_return(*(float *)args[i]);"))
(define frame-arg/double!
(foreign-lambda* double ([(c-pointer c-pointer) args] [size_t i]) "C_return(*(double *)args[i]);"))
(define frame-arg/string!
(foreign-lambda* c-string ([(c-pointer c-pointer) args] [size_t i]) "C_return(*(const char **)args[i]);"))
(define frame-arg/pointer!
(foreign-lambda* c-pointer ([(c-pointer c-pointer) args] [size_t i]) "C_return(*(void **)args[i]);"))
(define frame-arg/handle!
(foreign-lambda* ihandle ([(c-pointer c-pointer) args] [size_t i]) "C_return(*(Ihandle **)args[i]);"))
(define frame-return/ubyte!
(foreign-lambda* void ([c-pointer ret] [unsigned-byte v]) "*(uint8_t *)ret = v;"))
;(define frame-return/int!
; (foreign-lambda* void ([c-pointer ret] [int v]) "*(int *)ret = v;"))
(define frame-return/status!
(foreign-lambda* void ([c-pointer ret] [istatus v]) "*(int *)ret = v;"))
(define frame-return/float!
(foreign-lambda* void ([c-pointer ret] [float v]) "*(float *)ret = v;"))
(define frame-return/double!
(foreign-lambda* void ([c-pointer ret] [double v]) "*(double *)ret = v;"))
(define frame-return/pointer!
(foreign-lambda* void ([c-pointer ret] [c-pointer v]) "*(void **)ret = v;"))
(define frame-return/handle!
(foreign-lambda* void ([c-pointer ret] [ihandle v]) "*(Ihandle **)ret = v;"))
(call-with-current-continuation
(lambda (return)
(let ([sig "i"] [ret? #f])
(dynamic-wind
void
(lambda ()
(let* ([data (registry-ref (wrapper-id proc))]
[proc (cdr data)])
(set! sig (car data))
(let ([args (list-ec (:string chr (index i) (string-drop sig 1))
(case chr
[(#\b) (frame-arg/ubyte! args i)]
[(#\i) (frame-arg/int! args i)]
[(#\f) (frame-arg/float! args i)]
[(#\d) (frame-arg/double! args i)]
[(#\s) (frame-arg/string! args i)]
[(#\v #\C) (frame-arg/pointer! args i)]
[(#\h) (frame-arg/handle! args i)]))])
(handle-exceptions exn
(print-error-message exn (current-error-port) "Error: in callback")
(let ([ret (apply proc args)])
(case (string-ref sig 0)
[(#\b) (frame-return/ubyte! pret ret)]
[(#\i) (frame-return/status! pret ret)]
[(#\f) (frame-return/float! pret ret)]
[(#\d) (frame-return/double! pret ret)]
[(#\v #\C) (frame-return/pointer! pret ret)]
[(#\h) (frame-return/handle! pret ret)])
(set! ret? #t))))))
(lambda ()
(unless ret?
(case (string-ref sig 0)
[(#\b) (frame-return/ubyte! pret 0)]
[(#\i) (frame-return/status! pret 'continue)]
[(#\f) (frame-return/float! pret 0.0)]
[(#\d) (frame-return/double! pret 0.0)]
[(#\v #\C #\h) (frame-return/pointer! pret #f)]))
(return (void))))))))
(define-values (callback-set! callback)
(letrec ([signature/raw
(foreign-lambda* c-string ([nonnull-ihandle handle] [iname/upcase name])
"C_return(iupClassCallbackGetFormat(handle->iclass, name));")]
[set/pointer!
(foreign-lambda c-pointer "IupSetCallback" nonnull-ihandle iname/upcase c-pointer)]
[get/pointer
(foreign-lambda c-pointer "IupGetCallback" nonnull-ihandle iname/upcase)]
[sigils
(irregex "([bifdsvCh]*)(?:=([bifdvCh]))?")]
[callback-set!
(lambda (handle name proc)
(let* ([sig
(cond
[(irregex-match sigils (or (signature/raw handle name) ""))
=> (lambda (groups)
(string-append
(or (irregex-match-substring groups 2) "i")
"h" (irregex-match-substring groups 1)))]
[else
(error 'callback-set! "callback has bad signature" handle name)])]
[new
(cond
[(or (not proc) (pointer? proc)) proc]
[else (registry-add! handle (call-interface sig) (cons sig proc))])])
(cond
[(set/pointer! handle name new) =>
(cut registry-remove! handle <>)])))]
[callback
(lambda (handle name)
(let ([proc (get/pointer handle name)])
(cond
[(wrapper-id proc)
=> (lambda (id)
(cdr (registry-ref id)))]
[else proc])))])
(values
callback-set!
(getter-with-setter callback callback-set!))))
;; }}}
;; {{{ Layout functions
(define create
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupCreate" iname/downcase)))
(define destroy!
(letrec ([collect-handles
(lambda (handle acc)
(cons
handle
(fold-ec acc (:children child handle)
child collect-handles)))]
[handle-destroy!
(foreign-safe-lambda void "IupDestroy" nonnull-ihandle)])
(lambda (handle)
(let ([handles (collect-handles handle '())])
(handle-destroy! handle)
(main-loop-flush)
(for-each registry-clear! handles)))))
(define map-peer!
(letrec ([map-peer/raw! (foreign-safe-lambda istatus "IupMap" nonnull-ihandle)])
(lambda (handle)
(let ([status (map-peer/raw! handle)])
(case status
[(#t) (void)]
[else (error 'map-peer! (format "failed to map peer (~s)" status) handle)])))))
(define unmap-peer!
(foreign-safe-lambda void "IupUnmap" nonnull-ihandle))
(define class-name
(foreign-lambda iname/downcase "IupGetClassName" nonnull-ihandle))
(define class-type
(foreign-lambda iname/downcase "IupGetClassType" nonnull-ihandle))
(define save-attributes!
(foreign-lambda void "IupSaveClassAttributes" nonnull-ihandle))
(define parent
(foreign-lambda ihandle "IupGetParent" nonnull-ihandle))
(define parent-dialog
(foreign-lambda ihandle "IupGetDialog" nonnull-ihandle))
(define sibling
(foreign-lambda ihandle "IupGetBrother" nonnull-ihandle))
(define child-add!
(letrec ([append! (foreign-safe-lambda ihandle "IupAppend" nonnull-ihandle nonnull-ihandle)]
[insert! (foreign-safe-lambda ihandle "IupInsert" nonnull-ihandle nonnull-ihandle nonnull-ihandle)])
(lambda (child container #!optional [anchor #f])
(or (if anchor
(insert! container anchor child)
(append! container child))
(error 'child-add! "failed to add child" child container anchor)))))
(define child-remove!
(foreign-safe-lambda void "IupDetach" nonnull-ihandle))
(define child-move!
(letrec ([move! (foreign-safe-lambda istatus "IupReparent" nonnull-ihandle nonnull-ihandle ihandle)])
(lambda (child parent #!optional ref-child)
(let ([status (move! child parent ref-child)])
(case status
[(#t) (void)]
[else (error 'child-move! (format "failed to move child (~s)" status) child parent)])))))
(define child-ref
(letrec ([ref/position (foreign-lambda ihandle "IupGetChild" nonnull-ihandle int)]
[ref/name (foreign-lambda ihandle "IupGetDialogChild" nonnull-ihandle iname/upcase)])
(lambda (container id)
((if (integer? id) ref/position ref/name) container id))))
(define child-pos
(letrec ([pos/raw (foreign-lambda int "IupGetChildPos" nonnull-ihandle nonnull-ihandle)])
(lambda (parent child)
(let ([pos (pos/raw parent child)])
(and (not (negative? pos)) pos)))))
(define child-count
(foreign-lambda int "IupGetChildCount" nonnull-ihandle))
(define (children handle)
(list-ec (:children child handle) child))
(define refresh
(foreign-safe-lambda void "IupRefresh" nonnull-ihandle))
(define redraw
(letrec ([update
(foreign-safe-lambda* void ([nonnull-ihandle handle] [bool children])
"IupUpdate(handle); if (children) IupUpdateChildren(handle);")]
[update/sync
(foreign-safe-lambda void "IupRedraw" nonnull-ihandle bool)])
(lambda (handle #!key [children? #f] [sync? #f])
((if sync? update/sync update) handle children?))))
(define child-x/y->pos
(letrec ([x/y->pos/raw (foreign-lambda int "IupConvertXYToPos" nonnull-ihandle int int)])
(lambda (parent x y)
(let ([pos (x/y->pos/raw parent x y)])
(and (not (negative? pos)) pos)))))
;; }}}
;; {{{ Dialog functions
(define show
(letrec ([position
................................................................................
(lambda (handle #!key [x 'current] [y 'current] [modal? #f])
(let ([status ((if modal? popup show/x/y) handle (position x) (position y))])
(case status
[(error) (error 'show "failed to show" handle)]
[else status])))))
(define hide
(letrec ([hide/raw (foreign-safe-lambda istatus "IupHide" nonnull-ihandle)])
(lambda (handle)
(let ([status (hide/raw handle)])
(case status
[(#t) (void)]
[else (error 'hide (format "failed to hide (~s)" status) handle)])))))
;; }}}
;; {{{ Composition functions
(define dialog
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupDialog" ihandle)))
(define fill
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupFill")))
(define gridbox
(make-constructor-procedure
(foreign-lambda* nonnull-ihandle ([ihandle-list handles]) "C_return(IupGridBoxv((Ihandle **)handles));")
#:apply-args list))
(define hbox
(make-constructor-procedure
(foreign-lambda* nonnull-ihandle ([ihandle-list handles]) "C_return(IupHboxv((Ihandle **)handles));")
#:apply-args list))
(define vbox
(make-constructor-procedure
(foreign-lambda* nonnull-ihandle ([ihandle-list handles]) "C_return(IupVboxv((Ihandle **)handles));")
#:apply-args list))
(define zbox
(make-constructor-procedure
(foreign-lambda* nonnull-ihandle ([ihandle-list handles]) "C_return(IupZboxv((Ihandle **)handles));")
#:apply-args list))
(define cbox
(make-constructor-procedure
(foreign-lambda* nonnull-ihandle ([ihandle-list handles]) "C_return(IupCboxv((Ihandle **)handles));")
#:apply-args list))
(define sbox
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupSbox" ihandle)))
(define radio
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupRadio" ihandle)))
(define normalizer
(make-constructor-procedure
(foreign-lambda* nonnull-ihandle ([ihandle-list handles]) "C_return(IupNormalizerv((Ihandle **)handles));")
#:apply-args list))
(define backgroundbox
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupBackgroundBox" ihandle)))
(define detachbox
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupDetachBox" ihandle)))
(define expandbox
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupExpander" ihandle)))
(define scrollbox
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupScrollBox" ihandle)))
(define split
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupSplit" ihandle ihandle)))
;; }}}
;; {{{ Image resource functions
(define image/palette
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupImage" int int blob)))
(define image/rgb
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupImageRGB" int int blob)))
(define image/rgba
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupImageRGBA" int int blob)))
(define image/file
(letrec ([load-image (foreign-lambda ihandle "IupLoadImage" c-string)])
(make-constructor-procedure
(lambda (file)
(or (load-image file) (error 'image/file (attribute #f 'iupim-lasterror)))))))
(define image/blob
(letrec ([load-image
(foreign-lambda* ihandle ([scheme-pointer data] [int size])
"Ihandle *image;"
"imBinMemoryFileName file;"
"int oldModule = imBinFileSetCurrentModule(IM_MEMFILE);"
"file.buffer = data;"
"file.size = size;"
"file.reallocate = 0;"
"image = IupLoadImage((const char *)&file);"
"imBinFileSetCurrentModule(oldModule);"
"C_return(image);")])
(make-constructor-procedure
(lambda (data)
(or (load-image
data
(cond
[(blob? data) (blob-size data)]
[(string? data) (string-length data)]
[else (error 'image/blob "unknown argument type")]))
(error 'image/blob (attribute #f 'iupim-lasterror)))))))
(define image-save
(letrec ([save-image (foreign-lambda bool "IupSaveImage" nonnull-ihandle c-string iname/upcase)])
(lambda (handle file format)
(unless (save-image handle file format)
(error 'image-save (attribute #f 'iupim-lasterror))))))
;; }}}
;; {{{ Focus functions
(define current-focus
(letrec ([focus (foreign-safe-lambda ihandle "IupGetFocus")]
................................................................................
[current-focus
(case-lambda
[() (focus)]
[(handle) (focus-set! handle)])])
(getter-with-setter current-focus current-focus)))
(define focus-next
(letrec ([focus-next/raw (foreign-safe-lambda ihandle "IupNextField" ihandle)])
(lambda (#!optional [handle (current-focus)])
(focus-next/raw handle))))
(define focus-previous
(letrec ([focus-previous/raw (foreign-safe-lambda ihandle "IupPreviousField" ihandle)])
(lambda (#!optional [handle (current-focus)])
(focus-previous/raw handle))))
;; }}}
;; {{{ Menu functions
(define menu
(make-constructor-procedure
(foreign-lambda* nonnull-ihandle ([ihandle-list handles]) "C_return(IupMenuv((Ihandle **)handles));")
#:apply-args list))
(define menu-item
(letrec ([action-item (foreign-lambda nonnull-ihandle "IupItem" c-string iname/upcase)]
[submenu-item (foreign-lambda nonnull-ihandle "IupSubmenu" c-string ihandle)])
(make-constructor-procedure
(lambda (#!optional [title #f] [action/menu #f])
((if (ihandle? action/menu) submenu-item action-item) title action/menu)))))
(define menu-separator
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupSeparator")))
;; }}}
;; {{{ Miscellaneous resource functions
(define clipboard
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupClipboard")))
(define timer
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupTimer")))
(define send-url
(letrec ([send-url/raw (foreign-lambda int "IupHelp" c-string)])
(lambda (url)
(and-let* ([status (send-url/raw url)]
[(not (= status 1))])
(error 'send-url (format "failed to open URL (~s)" status) url))
(void))))
;; }}}
;; {{{ The library watchdog
(define thread-watchdog
(letrec ([open (foreign-lambda* istatus () "C_return(IupOpen(NULL, NULL));")]
[setlocale (foreign-lambda* void () "setlocale(LC_NUMERIC, \"C\");")]
[open-imglib (foreign-lambda void "IupImageLibOpen")]
[close (foreign-lambda void "IupClose")]
[chicken-yield (foreign-value "&CHICKEN_yield" c-pointer)])
(and-let* ([(let ([status (dynamic-wind void open setlocale)])
(case status
[(#t) #t]
[(ignore) #f]
[else (error 'iup (format "failed to initialize library (~s)" status))]))]
[(open-imglib)]
[watchdog (timer)])
(set-finalizer!
watchdog
(lambda (watchdog)
(destroy! watchdog)
(close)))
(callback-set! watchdog 'action-cb chicken-yield)
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;; {{{ Data types
(foreign-declare
"#include <ffi.h>\n"
"#include <locale.h>\n"
"#include <im.h>\n"
"#include <im_binfile.h>\n"
"#include <iup.h>\n"
"#include <iupim.h>\n"
"typedef struct Iclass_ Iclass;\n"
"struct Ihandle_ { char sig[4]; Iclass *iclass; /* ... */ } ;\n"
"extern char *iupClassCallbackGetFormat(Iclass *iclass, const char *name);\n")
(define *ihandle-tag* "Ihandle")
(define ihandle? (cut tagged-pointer? <> *ihandle-tag*))
(define (ihandle->pointer nonnull?)
(if nonnull?
(lambda (handle)
(ensure ihandle? handle)
handle)
(lambda (handle)
(ensure (disjoin not ihandle?) handle)
handle)))
(define (pointer->ihandle nonnull?)
(if nonnull?
(lambda (handle)
(ensure pointer? handle)
(tag-pointer handle *ihandle-tag*))
(lambda (handle)
(and handle (tag-pointer handle *ihandle-tag*)))))
(define (ihandle-list->pointer-vector lst)
(let ([ptrs (make-pointer-vector (add1 (length lst)) #f)])
(do-ec (:list handle (index i) lst)
(begin
(ensure ihandle? handle)
(pointer-vector-set! ptrs i handle)))
ptrs))
(define (istatus->integer status)
(case status
[(error) +1]
[(opened invalid ignore) -1]
[(default) -2]
[(close #f) -3]
[(continue) -4]
[else (if (integer? status) status 0)]))
(define (integer->istatus status)
(case status
[(+1) 'error]
[( 0) #t]
[(-1) 'ignore]
[(-2) 'default]
[(-3) #f]
[(-4) 'continue]
[else status]))
(define (iname->string default-case)
(let ([change-case
(case default-case
[(upcase) string-upcase]
[(downcase) string-downcase]
[else (error 'iname->string "unsupported default case" default-case)])]
[keyword-or-symbol->string
(lambda (name)
(cond [(keyword? name) (keyword->string name)]
[(symbol? name) (symbol->string name)]
[else (error 'iname->string "not a keyword or symbol" name)]))])
(lambda (name)
(cond
[(or (not name) (string? name))
name]
[(or (symbol? name) (keyword? name))
(change-case (string-translate (keyword-or-symbol->string name) #\- #\_))]
[else
(error 'iname->string "bad name" name)]))))
(define (string->iname default-case)
(let ([specials
(irregex
(case default-case
[(upcase) "[-a-z]"]
[(downcase) "[-A-Z]"]
[else (error 'string->iname "unsupported default case" default-case)]))])
(lambda (name)
(cond
[(or (not name) (irregex-search specials name))
name]
[else
(string->symbol (string-downcase (string-translate name #\_ #\-)))]))))
(include "iup-types.scm")
;; }}}
;; {{{ Support macros and functions
(define-syntax :children
(syntax-rules ()
[(:children cc child handle)
(:do cc ([child (child-ref handle 0)]) child ((sibling child)))]))
(define-syntax optional-args
(syntax-rules ()
[(optional-args [name default] ...)
(lambda (args) (let-optionals args ([name default] ...) (list name ...)))]))
(define ((make-constructor-procedure proc #!key [apply-args values]) . args)
(let more ([keys '()] [key-args '()] [pos-args '()] [rest args])
(cond
[(null? rest)
(let ([handle (apply proc (apply-args (reverse! pos-args)))])
(do-ec (:parallel (:list key keys) (:list arg key-args))
((if (procedure? arg) callback-set! attribute-set!) handle key arg))
handle)]
[(keyword? (car rest))
(more
(cons (car rest) keys) (cons (cadr rest) key-args) pos-args
(cddr rest))]
[else
(more
keys key-args (cons (car rest) pos-args)
(cdr rest))])))
;; }}}
;; {{{ System functions
(define iup-version
(foreign-lambda c-string "IupVersion"))
(define load/led
(letrec ([load/raw (foreign-lambda c-string "IupLoad" c-string)])
(lambda (file)
(and-let* ([status (load/raw file)])
(error 'load/led status))
(void))))
;; }}}
;; {{{ Attribute functions
(define attribute-set!
(letrec ([set/string! (foreign-safe-lambda void "IupStoreAttribute" ihandle iname/upcase c-string)]
[set/handle! (foreign-safe-lambda void "IupSetAttributeHandle" ihandle iname/upcase ihandle)])
(lambda (handle name value)
(cond
[(or (not value) (string? value))
(set/string! handle name value)]
[(ihandle? value)
(set/handle! handle name value)]
[(boolean? value)
(set/string! handle name (if value "YES" "NO"))]
[else
(set/string! handle name (->string value))]))))
(define attribute-reset!
(foreign-safe-lambda void "IupResetAttribute" ihandle iname/upcase))
(define attribute
(getter-with-setter
(foreign-safe-lambda c-string "IupGetAttribute" ihandle iname/upcase)
attribute-set!))
(define attributes
(foreign-primitive scheme-object ([ihandle handle])
"int n = IupGetAllAttributes(handle, NULL, 0);"
"if (n > 0) {"
" char **buf = (char **) alloca(n * sizeof(char *));"
" if (IupGetAllAttributes(handle, buf, n) == n) {"
" int i, m = C_SIZEOF_LIST(n);"
" for (i = 0; i < n; ++i) m += C_SIZEOF_STRING(strlen(buf[i]));"
" C_word *mrk = C_alloc(m), lst = C_SCHEME_END_OF_LIST;"
" for (i = n-1; i >= 0; --i) lst = C_pair(&mrk, C_string2(&mrk, buf[i]), lst);"
" C_return(lst);"
" }"
"}"
"C_return(C_SCHEME_END_OF_LIST);"))
(define handle-name-set!
(letrec ([handle-set! (foreign-lambda ihandle "IupSetHandle" iname/downcase ihandle)])
(lambda (handle name)
(handle-set! (or name (handle-name handle)) (and name handle)))))
(define handle-name
(getter-with-setter
(foreign-lambda iname/downcase "IupGetName" nonnull-ihandle)
handle-name-set!))
(define handle-ref
(foreign-lambda ihandle "IupGetHandle" iname/downcase))
;; }}}
;; {{{ Event functions
(define main-loop
(letrec ([loop (foreign-safe-lambda istatus "IupMainLoop")])
(lambda ()
(let ([status (loop)])
(case status
[(#t) (void)]
[else (error 'main-loop (format "error in IUP main loop (~s)" status))])))))
(define main-loop-step
(letrec ([loop-step (foreign-safe-lambda istatus "IupLoopStep")]
[loop-step/wait (foreign-safe-lambda istatus "IupLoopStepWait")])
(lambda (poll?)
(let ([status ((if poll? loop-step loop-step/wait))])
(case status
[(error) (error 'main-loop-step "error in IUP main loop")]
[else status])))))
(define main-loop-level
(foreign-lambda int "IupMainLoopLevel"))
(define main-loop-exit
(foreign-lambda void "IupExitLoop"))
(define main-loop-flush
(foreign-safe-lambda void "IupFlush"))
(define (make-wrapper cif)
(let-location ([proc c-pointer #f])
(let ([closure
((foreign-lambda* (c-pointer "ffi_closure") ([(nonnull-c-pointer c-pointer) proc])
"C_return(ffi_closure_alloc(sizeof(ffi_closure), proc));" )
(location proc))])
................................................................................
(define (wrapper-id proc)
(and proc (pointer->address proc)))
(define wrapper-destroy!
(foreign-lambda void "ffi_closure_free" (nonnull-c-pointer "ffi_closure")))
(define-values (registry-ref registry-add! registry-remove! registry-clear!)
(let ([registry (make-hash-table = number-hash)])
(values
(lambda (id)
(cdr (hash-table-ref registry id)))
(lambda (handle cif data)
(let*-values ([(closure proc) (make-wrapper cif)]
[(id) (pointer->address proc)])
(hash-table-set!
registry id
(cons closure data))
(hash-table-update!/default
registry (pointer->address handle)
(cut cons id <>) '())
proc))
(lambda (handle proc)
(cond
[(wrapper-id proc)
=> (lambda (id)
(hash-table-update!/default
registry (pointer->address handle)
(cut delete id <> =) '())
(let ([closure (car (hash-table-ref registry id))])
(hash-table-delete! registry id)
(wrapper-destroy! closure)))]))
(lambda (handle)
(let* ([key (pointer->address handle)]
[ids (hash-table-ref/default registry key '())])
(hash-table-delete! registry key)
(do-ec (:list id ids)
(let ([closure (car (hash-table-ref registry id))])
(hash-table-delete! registry id)
(wrapper-destroy! closure))))))))
(define call-interface
(let ([interfaces (make-hash-table string=? string-hash)])
(lambda (sig)
(or
(hash-table-ref/default interfaces sig #f)
(let ([cif
................................................................................
(string-length sig) sig)])
(unless cif
(error 'callback-set! "unsupported signature"))
(hash-table-set! interfaces sig cif)
cif)))))
(define-external (callback_entry [(c-pointer "ffi_cif") cif] [c-pointer pret] [(c-pointer c-pointer) args] [c-pointer proc]) void
(define frame-arg/ubyte!
(foreign-lambda* unsigned-byte ([(c-pointer c-pointer) args] [size_t i]) "C_return(*(uint8_t *)args[i]);"))
(define frame-arg/int!
(foreign-lambda* int ([(c-pointer c-pointer) args] [size_t i]) "C_return(*(int *)args[i]);"))
(define frame-arg/float!
(foreign-lambda* float ([(c-pointer c-pointer) args] [size_t i]) "C_return(*(float *)args[i]);"))
(define frame-arg/double!
(foreign-lambda* double ([(c-pointer c-pointer) args] [size_t i]) "C_return(*(double *)args[i]);"))
(define frame-arg/string!
(foreign-lambda* c-string ([(c-pointer c-pointer) args] [size_t i]) "C_return(*(const char **)args[i]);"))
(define frame-arg/pointer!
(foreign-lambda* c-pointer ([(c-pointer c-pointer) args] [size_t i]) "C_return(*(void **)args[i]);"))
(define frame-arg/handle!
(foreign-lambda* ihandle ([(c-pointer c-pointer) args] [size_t i]) "C_return(*(Ihandle **)args[i]);"))
(define frame-return/ubyte!
(foreign-lambda* void ([c-pointer ret] [unsigned-byte v]) "*(uint8_t *)ret = v;"))
;(define frame-return/int!
; (foreign-lambda* void ([c-pointer ret] [int v]) "*(int *)ret = v;"))
(define frame-return/status!
(foreign-lambda* void ([c-pointer ret] [istatus v]) "*(int *)ret = v;"))
(define frame-return/float!
(foreign-lambda* void ([c-pointer ret] [float v]) "*(float *)ret = v;"))
(define frame-return/double!
(foreign-lambda* void ([c-pointer ret] [double v]) "*(double *)ret = v;"))
(define frame-return/pointer!
(foreign-lambda* void ([c-pointer ret] [c-pointer v]) "*(void **)ret = v;"))
(define frame-return/handle!
(foreign-lambda* void ([c-pointer ret] [ihandle v]) "*(Ihandle **)ret = v;"))
(call-with-current-continuation
(lambda (return)
(let ([sig "i"] [ret? #f])
(dynamic-wind
void
(lambda ()
(let* ([data (registry-ref (wrapper-id proc))]
[proc (cdr data)])
(set! sig (car data))
(let ([args (list-ec (:string chr (index i) (string-drop sig 1))
(case chr
[(#\b) (frame-arg/ubyte! args i)]
[(#\i) (frame-arg/int! args i)]
[(#\f) (frame-arg/float! args i)]
[(#\d) (frame-arg/double! args i)]
[(#\s) (frame-arg/string! args i)]
[(#\v #\C) (frame-arg/pointer! args i)]
[(#\h) (frame-arg/handle! args i)]))])
(handle-exceptions exn
(print-error-message exn (current-error-port) "Error: in callback")
(let ([ret (apply proc args)])
(case (string-ref sig 0)
[(#\b) (frame-return/ubyte! pret ret)]
[(#\i) (frame-return/status! pret ret)]
[(#\f) (frame-return/float! pret ret)]
[(#\d) (frame-return/double! pret ret)]
[(#\v #\C) (frame-return/pointer! pret ret)]
[(#\h) (frame-return/handle! pret ret)])
(set! ret? #t))))))
(lambda ()
(unless ret?
(case (string-ref sig 0)
[(#\b) (frame-return/ubyte! pret 0)]
[(#\i) (frame-return/status! pret 'continue)]
[(#\f) (frame-return/float! pret 0.0)]
[(#\d) (frame-return/double! pret 0.0)]
[(#\v #\C #\h) (frame-return/pointer! pret #f)]))
(return (void))))))))
(define-values (callback-set! callback)
(letrec ([signature/raw
(foreign-lambda* c-string ([nonnull-ihandle handle] [iname/upcase name])
"C_return(iupClassCallbackGetFormat(handle->iclass, name));")]
[set/pointer!
(foreign-lambda c-pointer "IupSetCallback" nonnull-ihandle iname/upcase c-pointer)]
[get/pointer
(foreign-lambda c-pointer "IupGetCallback" nonnull-ihandle iname/upcase)]
[sigils
(irregex "([bifdsvCh]*)(?:=([bifdvCh]))?")]
[callback-set!
(lambda (handle name proc)
(let* ([sig
(cond
[(irregex-match sigils (or (signature/raw handle name) ""))
=> (lambda (groups)
(string-append
(or (irregex-match-substring groups 2) "i")
"h" (irregex-match-substring groups 1)))]
[else
(error 'callback-set! "callback has bad signature" handle name)])]
[new
(cond
[(or (not proc) (pointer? proc)) proc]
[else (registry-add! handle (call-interface sig) (cons sig proc))])])
(cond
[(set/pointer! handle name new) =>
(cut registry-remove! handle <>)])))]
[callback
(lambda (handle name)
(let ([proc (get/pointer handle name)])
(cond
[(wrapper-id proc)
=> (lambda (id)
(cdr (registry-ref id)))]
[else proc])))])
(values
callback-set!
(getter-with-setter callback callback-set!))))
;; }}}
;; {{{ Layout functions
(define create
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupCreate" iname/downcase)))
(define destroy!
(letrec ([collect-handles
(lambda (handle acc)
(cons
handle
(fold-ec acc (:children child handle)
child collect-handles)))]
[handle-destroy!
(foreign-safe-lambda void "IupDestroy" nonnull-ihandle)])
(lambda (handle)
(let ([handles (collect-handles handle '())])
(handle-destroy! handle)
(main-loop-flush)
(for-each registry-clear! handles)))))
(define map-peer!
(letrec ([map-peer/raw! (foreign-safe-lambda istatus "IupMap" nonnull-ihandle)])
(lambda (handle)
(let ([status (map-peer/raw! handle)])
(case status
[(#t) (void)]
[else (error 'map-peer! (format "failed to map peer (~s)" status) handle)])))))
(define unmap-peer!
(foreign-safe-lambda void "IupUnmap" nonnull-ihandle))
(define class-name
(foreign-lambda iname/downcase "IupGetClassName" nonnull-ihandle))
(define class-type
(foreign-lambda iname/downcase "IupGetClassType" nonnull-ihandle))
(define save-attributes!
(foreign-lambda void "IupSaveClassAttributes" nonnull-ihandle))
(define parent
(foreign-lambda ihandle "IupGetParent" nonnull-ihandle))
(define parent-dialog
(foreign-lambda ihandle "IupGetDialog" nonnull-ihandle))
(define sibling
(foreign-lambda ihandle "IupGetBrother" nonnull-ihandle))
(define child-add!
(letrec ([append! (foreign-safe-lambda ihandle "IupAppend" nonnull-ihandle nonnull-ihandle)]
[insert! (foreign-safe-lambda ihandle "IupInsert" nonnull-ihandle nonnull-ihandle nonnull-ihandle)])
(lambda (child container #!optional [anchor #f])
(or (if anchor
(insert! container anchor child)
(append! container child))
(error 'child-add! "failed to add child" child container anchor)))))
(define child-remove!
(foreign-safe-lambda void "IupDetach" nonnull-ihandle))
(define child-move!
(letrec ([move! (foreign-safe-lambda istatus "IupReparent" nonnull-ihandle nonnull-ihandle ihandle)])
(lambda (child parent #!optional ref-child)
(let ([status (move! child parent ref-child)])
(case status
[(#t) (void)]
[else (error 'child-move! (format "failed to move child (~s)" status) child parent)])))))
(define child-ref
(letrec ([ref/position (foreign-lambda ihandle "IupGetChild" nonnull-ihandle int)]
[ref/name (foreign-lambda ihandle "IupGetDialogChild" nonnull-ihandle iname/upcase)])
(lambda (container id)
((if (integer? id) ref/position ref/name) container id))))
(define child-pos
(letrec ([pos/raw (foreign-lambda int "IupGetChildPos" nonnull-ihandle nonnull-ihandle)])
(lambda (parent child)
(let ([pos (pos/raw parent child)])
(and (not (negative? pos)) pos)))))
(define child-count
(foreign-lambda int "IupGetChildCount" nonnull-ihandle))
(define (children handle)
(list-ec (:children child handle) child))
(define refresh
(foreign-safe-lambda void "IupRefresh" nonnull-ihandle))
(define redraw
(letrec ([update
(foreign-safe-lambda* void ([nonnull-ihandle handle] [bool children])
"IupUpdate(handle); if (children) IupUpdateChildren(handle);")]
[update/sync
(foreign-safe-lambda void "IupRedraw" nonnull-ihandle bool)])
(lambda (handle #!key [children? #f] [sync? #f])
((if sync? update/sync update) handle children?))))
(define child-x/y->pos
(letrec ([x/y->pos/raw (foreign-lambda int "IupConvertXYToPos" nonnull-ihandle int int)])
(lambda (parent x y)
(let ([pos (x/y->pos/raw parent x y)])
(and (not (negative? pos)) pos)))))
;; }}}
;; {{{ Dialog functions
(define show
(letrec ([position
................................................................................
(lambda (handle #!key [x 'current] [y 'current] [modal? #f])
(let ([status ((if modal? popup show/x/y) handle (position x) (position y))])
(case status
[(error) (error 'show "failed to show" handle)]
[else status])))))
(define hide
(letrec ([hide/raw (foreign-safe-lambda istatus "IupHide" nonnull-ihandle)])
(lambda (handle)
(let ([status (hide/raw handle)])
(case status
[(#t) (void)]
[else (error 'hide (format "failed to hide (~s)" status) handle)])))))
;; }}}
;; {{{ Composition functions
(define dialog
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupDialog" ihandle)))
(define fill
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupFill")))
(define gridbox
(make-constructor-procedure
(foreign-lambda* nonnull-ihandle ([ihandle-list handles]) "C_return(IupGridBoxv((Ihandle **)handles));")
#:apply-args list))
(define hbox
(make-constructor-procedure
(foreign-lambda* nonnull-ihandle ([ihandle-list handles]) "C_return(IupHboxv((Ihandle **)handles));")
#:apply-args list))
(define vbox
(make-constructor-procedure
(foreign-lambda* nonnull-ihandle ([ihandle-list handles]) "C_return(IupVboxv((Ihandle **)handles));")
#:apply-args list))
(define zbox
(make-constructor-procedure
(foreign-lambda* nonnull-ihandle ([ihandle-list handles]) "C_return(IupZboxv((Ihandle **)handles));")
#:apply-args list))
(define cbox
(make-constructor-procedure
(foreign-lambda* nonnull-ihandle ([ihandle-list handles]) "C_return(IupCboxv((Ihandle **)handles));")
#:apply-args list))
(define sbox
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupSbox" ihandle)))
(define radio
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupRadio" ihandle)))
(define normalizer
(make-constructor-procedure
(foreign-lambda* nonnull-ihandle ([ihandle-list handles]) "C_return(IupNormalizerv((Ihandle **)handles));")
#:apply-args list))
(define backgroundbox
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupBackgroundBox" ihandle)))
(define detachbox
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupDetachBox" ihandle)))
(define expandbox
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupExpander" ihandle)))
(define scrollbox
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupScrollBox" ihandle)))
(define split
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupSplit" ihandle ihandle)))
;; }}}
;; {{{ Image resource functions
(define image/palette
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupImage" int int blob)))
(define image/rgb
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupImageRGB" int int blob)))
(define image/rgba
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupImageRGBA" int int blob)))
(define image/file
(letrec ([load-image (foreign-lambda ihandle "IupLoadImage" c-string)])
(make-constructor-procedure
(lambda (file)
(or (load-image file) (error 'image/file (attribute #f 'iupim-lasterror)))))))
(define image/blob
(letrec ([load-image
(foreign-lambda* ihandle ([scheme-pointer data] [int size])
"Ihandle *image;"
"imBinMemoryFileName file;"
"int oldModule = imBinFileSetCurrentModule(IM_MEMFILE);"
"file.buffer = data;"
"file.size = size;"
"file.reallocate = 0;"
"image = IupLoadImage((const char *)&file);"
"imBinFileSetCurrentModule(oldModule);"
"C_return(image);")])
(make-constructor-procedure
(lambda (data)
(or (load-image
data
(cond
[(blob? data) (blob-size data)]
[(string? data) (string-length data)]
[else (error 'image/blob "unknown argument type")]))
(error 'image/blob (attribute #f 'iupim-lasterror)))))))
(define image-save
(letrec ([save-image (foreign-lambda bool "IupSaveImage" nonnull-ihandle c-string iname/upcase)])
(lambda (handle file format)
(unless (save-image handle file format)
(error 'image-save (attribute #f 'iupim-lasterror))))))
;; }}}
;; {{{ Focus functions
(define current-focus
(letrec ([focus (foreign-safe-lambda ihandle "IupGetFocus")]
................................................................................
[current-focus
(case-lambda
[() (focus)]
[(handle) (focus-set! handle)])])
(getter-with-setter current-focus current-focus)))
(define focus-next
(letrec ([focus-next/raw (foreign-safe-lambda ihandle "IupNextField" ihandle)])
(lambda (#!optional [handle (current-focus)])
(focus-next/raw handle))))
(define focus-previous
(letrec ([focus-previous/raw (foreign-safe-lambda ihandle "IupPreviousField" ihandle)])
(lambda (#!optional [handle (current-focus)])
(focus-previous/raw handle))))
;; }}}
;; {{{ Menu functions
(define menu
(make-constructor-procedure
(foreign-lambda* nonnull-ihandle ([ihandle-list handles]) "C_return(IupMenuv((Ihandle **)handles));")
#:apply-args list))
(define menu-item
(letrec ([action-item (foreign-lambda nonnull-ihandle "IupItem" c-string iname/upcase)]
[submenu-item (foreign-lambda nonnull-ihandle "IupSubmenu" c-string ihandle)])
(make-constructor-procedure
(lambda (#!optional [title #f] [action/menu #f])
((if (ihandle? action/menu) submenu-item action-item) title action/menu)))))
(define menu-separator
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupSeparator")))
;; }}}
;; {{{ Miscellaneous resource functions
(define clipboard
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupClipboard")))
(define timer
(make-constructor-procedure
(foreign-lambda nonnull-ihandle "IupTimer")))
(define send-url
(letrec ([send-url/raw (foreign-lambda int "IupHelp" c-string)])
(lambda (url)
(and-let* ([status (send-url/raw url)]
[(not (= status 1))])
(error 'send-url (format "failed to open URL (~s)" status) url))
(void))))
;; }}}
;; {{{ The library watchdog
(define thread-watchdog
(letrec ([open (foreign-lambda* istatus () "C_return(IupOpen(NULL, NULL));")]
[setlocale (foreign-lambda* void () "setlocale(LC_NUMERIC, \"C\");")]
[open-imglib (foreign-lambda void "IupImageLibOpen")]
[close (foreign-lambda void "IupClose")]
[chicken-yield (foreign-value "&CHICKEN_yield" c-pointer)])
(and-let* ([(let ([status (dynamic-wind void open setlocale)])
(case status
[(#t) #t]
[(ignore) #f]
[else (error 'iup (format "failed to initialize library (~s)" status))]))]
[(open-imglib)]
[watchdog (timer)])
(set-finalizer!
watchdog
(lambda (watchdog)
(destroy! watchdog)
(close)))
(callback-set! watchdog 'action-cb chicken-yield)
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