;; Common Lisp bindings for GTK+ v2.0
-;; Copyright (C) 1999-2000 Espen S. Johnsen <espejohn@online.no>
+;; Copyright (C) 1999-2000 Espen S. Johnsen <esj@ostud.cs.uit.no>
;;
;; This library is free software; you can redistribute it and/or
;; modify it under the terms of the GNU Lesser General Public
;; License along with this library; if not, write to the Free Software
;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-;; $Id: gtkobject.lisp,v 1.5 2000/08/23 21:41:10 espen Exp $
+;; $Id: gtkobject.lisp,v 1.7 2000/11/09 20:30:16 espen Exp $
(in-package "GTK")
+
+;;;; Initializing
+
+(setf (alien-type-name 'pointer) "gpointer")
+
+
;;;; Misc utils
(defun name-to-string (name)
value)
-;;;; Callback mechanism
-
-(defun register-callback-function (function)
- (check-type function (or null symbol function))
- ; We treat callbacks just as ordinary user data
- (register-user-data function))
-
-(defun callback-trampoline (callback-id nargs arg-array)
- (declare (fixnum callback-id nargs))
- (let* ((return-arg (unless (null-pointer-p arg-array)
- (arg-array-ref arg-array nargs)))
- (return-type (if return-arg
- (type-from-number (arg-type return-arg))
- nil))
- (args nil)
- (callback-function (find-user-data callback-id)))
-
- (dotimes (n nargs)
- (push (arg-value (arg-array-ref arg-array (- nargs n 1))) args))
-
- (labels ((invoke-callback ()
- (restart-case
- (unwind-protect
- (let ((return-value (apply callback-function args)))
- (when return-type
- (setf (return-arg-value return-arg) return-value))))
-
- (continue nil :report "Return from callback function"
- (when return-type
- (format
- *query-io*
- "Enter return value of type ~S: "
- return-type)
- (force-output *query-io*)
- (setf
- (return-arg-value return-arg)
- (eval (read *query-io*)))))
- (re-invoke nil :report "Re-invoke callback function"
- (invoke-callback)))))
- (invoke-callback))))
-
-(defvar *callback-marshal* (system:foreign-symbol-address "callback_marshal"))
-(setq *destroy-marshal* (system:foreign-symbol-address "destroy_marshal"))
-
-(defun after-gc-hook ()
- (setf
- (extern-alien "callback_trampoline" system-area-pointer)
- (make-pointer (kernel:get-lisp-obj-address #'callback-trampoline))
- (extern-alien "destroy_user_data" system-area-pointer)
- (make-pointer (kernel:get-lisp-obj-address #'destroy-user-data))))
-
-(pushnew 'after-gc-hook ext:*after-gc-hooks*)
-(after-gc-hook)
-
-
;;;; Main loop, timeouts and idle functions
-;;;; Signals
-
-(define-foreign %signal-emit-stop () nil
- (object object)
- (signal-id unsigned-int))
-
-(define-foreign %signal-emit-stop-by-name (object signal) nil
- (object object)
- ((name-to-string signal) string))
-
-(defun signal-emit-stop (object signal)
- (if (numberp signal)
- (%signal-emit-stop object signal)
- (%signal-emit-stop-by-name object signal)))
-
-(define-foreign %signal-connect-full
- (object signal function after) unsigned-int
- (object object)
- ((name-to-string signal) string)
- (0 unsigned-long)
- (*callback-marshal* pointer)
- ((register-callback-function function) unsigned-long)
- (*destroy-marshal* pointer)
- (nil boolean)
- (after boolean))
-
-(defun signal-connect (object signal function
- &key after ((:object callback-object)))
- (let* ((callback-object (if (eq callback-object t)
- object
- callback-object))
- (callback-function
- (if callback-object
- #'(lambda (&rest args) (apply function callback-object args))
- function)))
- (%signal-connect-full object signal callback-function after)))
-
-(define-foreign signal-disconnect () nil
- (object object)
- (handler unsigned-int))
-
-(define-foreign signal-handler-block () nil
- (object object)
- (handler unsigned-int))
-
-(define-foreign signal-handler-unblock () nil
- (object object)
- (handler unsigned-int))
-
-
;;;; Metaclass used for subclasses of object
(eval-when (:compile-toplevel :load-toplevel :execute)