;; TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
;; SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-;; $Id: gcallback.lisp,v 1.37 2006-08-30 09:52:10 espen Exp $
+;; $Id: gcallback.lisp,v 1.50 2008-05-06 00:04:42 espen Exp $
(in-package "GLIB")
(use-prefix "g")
-;;;; Callback invokation
+;;;; Callback invocation
(deftype gclosure () 'pointer)
(register-type 'gclosure '|g_closure_get_type|)
(check-type function (or null symbol function))
(register-user-data function))
+(deftype user-callback () '(or function symbol))
+
+(define-type-method alien-type ((type user-callback))
+ (declare (ignore type))
+ (alien-type 'pointer-data))
+
+(define-type-method to-alien-form ((type user-callback) func &optional copy-p)
+ (declare (ignore type copy-p))
+ `(register-callback-function ,func))
+
+
;; Callback marshaller for regular signal handlers
(define-callback signal-handler-marshal nil
((gclosure gclosure) (return-value gvalue) (n-params unsigned-int)
(param-values pointer) (invocation-hint pointer)
- (callback-id unsigned-long))
+ (callback-id pointer-data))
(declare (ignore gclosure invocation-hint))
(callback-trampoline #'invoke-signal-handler callback-id n-params param-values return-value))
-;; Callback marshaller for class handlers
+;; Callback marshaller for class handlers
(define-callback class-handler-marshal nil
((gclosure gclosure) (return-value gvalue) (n-params unsigned-int)
(param-values pointer) (invocation-hint pointer)
- (callback-id unsigned-long))
+ (callback-id pointer-data))
(declare (ignore gclosure invocation-hint))
(callback-trampoline #'invoke-callback callback-id n-params param-values return-value))
;; Callback marshaller for emission hooks
(define-callback emission-hook-marshal nil
((invocation-hint pointer) (n-params unsigned-int) (param-values pointer)
- (callback-id unsigned-long))
+ (callback-id pointer-data))
(declare (ignore invocation-hint))
(callback-trampoline #'invoke-callback callback-id n-params param-values))
(signal-handler-block instance handler-id)
(unwind-protect
(restart-case (apply #'invoke-callback callback-id nil args)
- (abort () :report "Disconnect and exit signal handler"
+ (disconnect () :report "Disconnect and exit signal handler"
(when (signal-handler-is-connected-p instance handler-id)
(signal-handler-disconnect instance handler-id))
- (values nil t))))
+ (values nil t)))
(when (signal-handler-is-connected-p instance handler-id)
- (signal-handler-unblock instance handler-id))))
+ (signal-handler-unblock instance handler-id)))))
(defun invoke-callback (callback-id return-type &rest args)
(restart-case (apply (find-user-data callback-id) args)
(defbinding source-remove () boolean
(tag unsigned-int))
-(define-callback source-callback-marshal nil ((callback-id unsigned-int))
- (callback-trampoline callback-id 0 nil))
+(define-callback source-callback-marshal boolean ((callback-id unsigned-int))
+ (invoke-source-callback callback-id))
+
+(defun invoke-source-callback (callback-id &rest args)
+ (restart-case (apply (find-user-data callback-id) args)
+ (remove () :report "Exit and remove source callback"
+ nil)
+ (continue () :report "Return from source callback"
+ t)
+ (re-invoke nil :report "Re-invoke source callback"
+ (apply #'invoke-source-callback callback-id args))))
+
(defbinding (timeout-add "g_timeout_add_full")
(interval function &optional (priority +priority-default+)) unsigned-int
((signal-name-to-string name) string)
((find-type-number type t) type-number))
-(defbinding signal-name () (copy-of string)
+(defbinding signal-name () (or null (copy-of string))
(signal-id unsigned-int))
(defbinding signal-list-ids (type) (vector unsigned-int n-ids)
(defun describe-signal (signal-id &optional type)
(let ((info (signal-query (ensure-signal-id-from-type signal-id type))))
(with-slots (id name type flags return-type n-params) info
- (format t "The signal with id ~D is named '~A' and may be emitted on instances of type ~S~%~%" id name (type-from-number type t))
- (format t "Signal handlers should return ~A and take ~A~%"
- (cond
- ((= return-type (find-type-number "void")) "no values")
- ((not (type-from-number return-type)) "values of unknown type")
- ((format nil "values of type ~S" (type-from-number return-type))))
+ (format t "The signal with id ~D is named '~A' and may be emitted on instances of type ~S." id name (type-from-number type t))
+ (when flags
+ (format t " It has the followin invocation flags: ~{~S ~}" flags))
+ (format t "~%~%Signal handlers should take ~A and return ~A~%"
(if (zerop n-params)
"no arguments"
(format nil "arguments with the following types: ~A"
- (signal-param-types info)))))))
+ (signal-param-types info)))
+ (cond
+ ((= return-type (find-type-number "void")) "no values")
+ ((not (type-from-number return-type)) "values of unknown type")
+ ((format nil "values of type ~S" (type-from-number return-type))))))))
;;;; Signal connecting and controlling
+(define-flags-type connect-flags :after :swapped)
+
(defvar *overridden-signals* (make-hash-table :test 'equalp))
(defbinding %signal-override-class-closure () nil
(detail quark)
(closure (or null pointer))
(func (or null pointer))
- (data unsigned-long))
+ (data pointer-data))
(defbinding signal-handler-disconnect () nil
(instance ginstance)
(closure-set-meta-marshal gclosure callback-id callback)
gclosure))
-(defun make-callback-closure (function marshaller)
+(defun make-callback-closure (function &optional (marshaller signal-handler-marshal))
(let ((callback-id (register-callback-function function)))
(values
(callback-closure-new callback-id marshaller user-data-destroy-callback)
callback-id)))
-(defgeneric compute-signal-function (gobject signal function object))
+(defgeneric compute-signal-function (gobject signal function object args))
-(defmethod compute-signal-function ((gobject gobject) signal function object)
+(defmethod compute-signal-function ((gobject gobject) signal function object args)
(declare (ignore signal))
(cond
- ((or (eq object t) (eq object gobject)) function)
- ((not object)
- #'(lambda (&rest args) (apply function (rest args))))
+ ((or (eq object t) (eq object gobject))
+ (if args
+ #'(lambda (&rest emission-args)
+ (apply function (nconc emission-args args)))
+ function))
+ (object
+ (if args
+ #'(lambda (&rest emission-args)
+ (apply function object (nconc (rest emission-args) args)))
+ #'(lambda (&rest emission-args)
+ (apply function object (rest emission-args)))))
+ (args
+ #'(lambda (&rest emission-args)
+ (apply function (nconc (rest emission-args) args))))
(t
- #'(lambda (&rest args) (apply function object (rest args))))))
-
+ #'(lambda (&rest emission-args)
+ (apply function (rest emission-args))))))
(defgeneric compute-signal-id (gobject signal))
(ensure-signal-id signal gobject))
-(defgeneric signal-connect (gobject signal function &key detail after object remove))
+(defgeneric signal-connect (gobject signal function &key detail after object remove args))
(defmethod signal-connect :around ((gobject gobject) signal function &rest args)
(declare (ignore gobject signal args))
(defmethod signal-connect ((gobject gobject) signal function
- &key detail after object remove)
+ &key detail after object remove args)
"Connects a callback function to a signal for a particular object. If
:OBJECT is T, the object connected to is passed as the first argument
to the callback function, or if :OBJECT is any other non NIL value, it
is passed as the first argument instead. If :AFTER is non NIL, the
handler will be called after the default handler for the signal. If
:REMOVE is non NIL, the handler will be removed after beeing invoked
-once."
-(let* ((signal-id (compute-signal-id gobject signal))
- (detail-quark (if detail (quark-intern detail) 0))
- (signal-stop-emission
- #'(lambda ()
- (%signal-stop-emission gobject signal-id detail-quark)))
- (callback (compute-signal-function gobject signal function object))
- (wrapper #'(lambda (&rest args)
- (let ((*signal-stop-emission* signal-stop-emission))
- (apply callback args)))))
- (multiple-value-bind (closure-id callback-id)
- (make-callback-closure wrapper signal-handler-marshal)
- (let ((handler-id (%signal-connect-closure-by-id
- gobject signal-id detail-quark closure-id after)))
- (when remove
- (update-user-data callback-id
- #'(lambda (&rest args)
+once. ARGS is a list of additional arguments passed to the callback
+function."
+ (let* ((signal-id (compute-signal-id gobject signal))
+ (detail-quark (if detail (quark-intern detail) 0))
+ (callback
+ (compute-signal-function gobject signal function object args))
+ (wrapper
+ #'(lambda (&rest args)
+ (let ((*signal-stop-emission*
+ #'(lambda ()
+ (%signal-stop-emission (first args)
+ signal-id detail-quark))))
+ (apply callback args)))))
+ (multiple-value-bind (closure-id callback-id)
+ (make-callback-closure wrapper signal-handler-marshal)
+ (let ((handler-id (%signal-connect-closure-by-id
+ gobject signal-id detail-quark closure-id after)))
+ (when remove
+ (update-user-data callback-id
+ #'(lambda (&rest args)
+ (let ((gobject (first args)))
(unwind-protect
- (let ((*signal-stop-emission* signal-stop-emission))
- (apply callback args))
+ (let ((*signal-stop-emission*
+ #'(lambda ()
+ (%signal-stop-emission gobject
+ signal-id detail-quark))))
+ (apply callback args))
(when (signal-handler-is-connected-p gobject handler-id)
- (signal-handler-disconnect gobject handler-id))))))
- handler-id))))
+ (signal-handler-disconnect gobject handler-id)))))))
+ handler-id))))
;;;; Signal emission
(params (allocate-memory (* n-params +gvalue-size+))))
#'(lambda (detail object &rest args)
(unless (= (length args) (1- n-params))
- (error "Invalid number of arguments: ~A" (+ 2 (length args))))
+ (error "Invalid number of arguments in emmision of signal ~A: ~A" signal-id (length args)))
(unwind-protect
(loop
for arg in (cons object args)
finally
(if return-type
(return
- (with-gvalue (return-value)
+ (with-gvalue (return-value return-type)
(%signal-emitv params signal-id detail return-value)))
(%signal-emitv params signal-id detail (make-pointer 0))))
(loop
(apply #'signal-emit-with-detail object signal 0 args))
+;;;; Signal registration
+
+(defbinding %signal-newv (name itype flags return-type param-types)
+ unsigned-int
+ ((signal-name-to-string name) string)
+ (itype gtype)
+ (flags signal-flags)
+ (nil null) ; class closure
+ (nil null) ; accumulator
+ (nil null) ; accumulator data
+ (nil null) ; c marshaller
+ (return-type gtype)
+ ((length param-types) unsigned-int)
+ (param-types (vector gtype)))
+
+(defun signal-new (name itype flags return-type param-types)
+ (when (zerop (signal-lookup name itype))
+ (%signal-newv name itype flags return-type param-types)))
+
;;;; Convenient macros
(defmacro define-callback-marshal (name return-type args &key (callback-id :last))
(t (second arg))))))
`(define-callback ,name ,return-type
,(ecase callback-id
- (:first `((callback-id unsigned-int) ,@(mapcar #'list names types)))
- (:last `(,@(mapcar #'list names types) (callback-id unsigned-int))))
+ (:first `((callback-id pointer-data) ,@(mapcar #'list names types)))
+ (:last `(,@(mapcar #'list names types) (callback-id pointer-data))))
(declare (ignore ,@ignore))
(invoke-callback callback-id ',return-type ,@(nreverse params)))))
~mdw / clg / blobdiff