[clg] / glib / gobject.lisp

;; Common Lisp bindings for GTK+ v2.0
;; Copyright (C) 2000-2001 Espen S. Johnsen <esj@stud.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 as published by the Free Software Foundation; either
;; version 2 of the License, or (at your option) any later version.
;;
;; This library is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;; Lesser General Public License for more details.
;;
;; You should have received a copy 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: gobject.lisp,v 1.25 2004-12-28 20:29:05 espen Exp $

(in-package "GLIB")


;;;; Metaclass used for subclasses of gobject

(eval-when (:compile-toplevel :load-toplevel :execute)
  (defclass gobject-class (ginstance-class)
    ())

  (defmethod validate-superclass ((class gobject-class)
				(super pcl::standard-class))
;  (subtypep (class-name super) 'gobject)
    t))

(defclass direct-property-slot-definition (direct-virtual-slot-definition)
  ((pname :reader slot-definition-pname :initarg :pname)
   (readable :initform t :reader slot-readable-p :initarg :readable)
   (writable :initform t :reader slot-writable-p :initarg :writable)
   (construct :initform nil :initarg :construct)))

(defclass effective-property-slot-definition (effective-virtual-slot-definition)
  ((pname :reader slot-definition-pname :initarg :pname)
   (readable :reader slot-readable-p :initarg :readable)
   (writable :reader slot-writable-p :initarg :writable)
   (construct :initarg :construct)));)

(defbinding %object-ref () pointer
  (location pointer))

(defbinding %object-unref () nil
  (location pointer))

(defmethod reference-foreign ((class gobject-class) location)
  (declare (ignore class))
  (%object-ref location))

(defmethod unreference-foreign ((class gobject-class) location)
  (declare (ignore class))
  (%object-unref location))


; (defbinding object-class-install-param () nil
;   (class pointer)
;   (id unsigned-int)
;   (parameter parameter))

; (defbinding object-class-find-param-spec () parameter
;   (class pointer)
;   (name string))

(defun signal-name-to-string (name)
  (substitute #\_ #\- (string-downcase (string name))))


(defmethod direct-slot-definition-class ((class gobject-class) &rest initargs)
  (case (getf initargs :allocation)
    (:property (find-class 'direct-property-slot-definition))
    (t (call-next-method))))

(defmethod effective-slot-definition-class ((class gobject-class) &rest initargs)
  (case (getf initargs :allocation)
    (:property (find-class 'effective-property-slot-definition))
    (t (call-next-method))))

(defmethod compute-effective-slot-definition-initargs ((class gobject-class) direct-slotds)
  (if (typep (first direct-slotds) 'direct-property-slot-definition)
      (nconc 
       (list :pname (signal-name-to-string 
		     (most-specific-slot-value direct-slotds 'pname))
	     :readable (most-specific-slot-value direct-slotds 'readable)
	     :writable (most-specific-slot-value direct-slotds 'writable)
	     :construct (most-specific-slot-value direct-slotds 'construct))
       (call-next-method))
    (call-next-method)))


(defmethod initialize-internal-slot-functions ((slotd effective-property-slot-definition))
  (let* ((type (slot-definition-type slotd))
	 (pname (slot-definition-pname slotd))
	 (type-number (find-type-number type)))
    (when (and (not (slot-boundp slotd 'getter)) (slot-readable-p slotd))
      (setf 
       (slot-value slotd 'getter)
       (let ((reader nil))
	 #'(lambda (object)
	     (unless reader
	       (setq reader (reader-function type))) ;(type-from-number type-number))))
	     (let ((gvalue (gvalue-new type-number)))
	       (%object-get-property object pname gvalue)
	       (unwind-protect
		 (funcall reader  gvalue +gvalue-value-offset+)
		 (gvalue-free gvalue t)))))))
    
    (when (and (not (slot-boundp slotd 'setter)) (slot-writable-p slotd))
      (setf 
       (slot-value slotd 'setter)
       (let ((writer nil))
	 #'(lambda (value object)
	     (unless writer
	       (setq writer (writer-function type))) ;(type-from-number type-number))))
	     (let ((gvalue (gvalue-new type-number)))
	       (funcall writer value gvalue +gvalue-value-offset+)
	       (%object-set-property object pname gvalue)
	       (gvalue-free gvalue t)
	       value))))))

  (call-next-method))


;;;; Super class for all classes in the GObject type hierarchy

(eval-when (:compile-toplevel :load-toplevel :execute)
  (defclass gobject (ginstance)
    ()
    (:metaclass gobject-class)
    (:alien-name "GObject")))


(defun initial-add (object function initargs key pkey)
  (loop 
   as (initarg value . rest) = initargs then rest
   do (cond
       ((eq initarg key) (funcall function object value))
       ((eq initarg pkey) (mapc #'(lambda (value)
				    (funcall function object value))
				value)))
       while rest))

(defun initial-apply-add (object function initargs key pkey)
  (initial-add object #'(lambda (object value)
			  (apply function object (mklist value)))
	       initargs key pkey))


(defmethod initialize-instance ((object gobject) &rest initargs)
  (unless (slot-boundp object 'location)
    ;; Extract initargs which we should pass directly to the GObeject
    ;; constructor
    (let* ((slotds (class-slots (class-of object)))
	   (args (when initargs
		   (loop 
		    as (key value . rest) = initargs then rest
		    as slotd = (find-if
				#'(lambda (slotd)
				    (member key (slot-definition-initargs slotd)))
				slotds)
		    when (and (typep slotd 'effective-property-slot-definition)
			      (slot-value slotd 'construct))
		    collect (progn 
			      (remf initargs key)
			      (list 
			       (slot-definition-pname slotd)
			       (slot-definition-type slotd)
			       value))
		    while rest))))
      (if args
	  (let* ((string-size (size-of 'string))
		 (string-writer (writer-function 'string))
		 (string-destroy (destroy-function 'string))
		 (params (allocate-memory 
			  (* (length args) (+ string-size +gvalue-size+)))))
	    (loop
	     for (pname type value) in args
	     as tmp = params then (sap+ tmp (+ string-size +gvalue-size+))
	     do (funcall string-writer pname tmp)
	     (gvalue-init (sap+ tmp string-size) type value))
	    (unwind-protect
		(setf  
		 (slot-value object 'location) 
		 (%gobject-newv (type-number-of object) (length args) params))
	      (loop
	       repeat (length args)
	       as tmp = params then (sap+ tmp (+ string-size +gvalue-size+))
	       do (funcall string-destroy tmp)
	       (gvalue-unset (sap+ tmp string-size)))
	      (deallocate-memory params)))
	(setf  
	 (slot-value object 'location) 
	 (%gobject-new (type-number-of object))))))

  (apply #'call-next-method object initargs))


(defmethod instance-finalizer ((instance gobject))
  (let ((location (proxy-location instance)))
    #'(lambda ()
	(remove-cached-instance location)
	(%object-unref location))))


(defbinding (%gobject-new "g_object_new") () pointer
  (type type-number)
  (nil null))

(defbinding (%gobject-newv "g_object_newv") () pointer
  (type type-number)
  (n-parameters unsigned-int)
  (params pointer))


;;;; Property stuff

(defbinding %object-set-property () nil
  (object gobject)
  (name string)
  (value gvalue))

(defbinding %object-get-property () nil
  (object gobject)
  (name string)
  (value gvalue))

(defbinding %object-notify () nil
  (object gobject)
  (name string))

(defbinding object-freeze-notify () nil
  (object gobject))

(defbinding object-thaw-notify () nil
  (object gobject))

(defbinding %object-set-qdata-full () nil
  (object gobject)
  (id quark)
  (data unsigned-long)
  (destroy-marshal pointer))


;;;; User data

(defun (setf object-data) (data object key &key (test #'eq))
  (%object-set-qdata-full
   object (quark-from-object key :test test)
   (register-user-data data) (callback %destroy-user-data))
  data)

(defbinding %object-get-qdata () unsigned-long
  (object gobject)		 
  (id quark))

(defun object-data (object key &key (test #'eq))
  (find-user-data
   (%object-get-qdata object (quark-from-object key :test test))))


;;;;

(defbinding %object-class-list-properties () pointer
  (class pointer)
  (n-properties unsigned-int :out))


(defun %map-params (params length type inherited-p)
  (if inherited-p
      (map-c-vector 'list #'identity params 'param length)
    (let ((properties ()))
      (map-c-vector 'list 
       #'(lambda (param)
	   (when (eql (param-owner-type param) type)
	     (push param properties)))
       params 'param length)
      (nreverse properties))))

(defun query-object-class-properties (type &optional inherited-p)
  (let* ((type-number (find-type-number type))
	 (class (type-class-ref type-number)))
    (unwind-protect
	 (multiple-value-bind (array length)
	     (%object-class-list-properties class)
	   (unwind-protect
		(%map-params array length type-number inherited-p)
	     (deallocate-memory array)))
;      (type-class-unref type-number)
      )))


(defun default-slot-name (name)
  (intern (substitute #\- #\_ (string-upcase (string-upcase name)))))

(defun default-slot-accessor (class-name slot-name type)
  (intern
   (format
    nil "~A-~A~A" class-name slot-name
    (if (eq type 'boolean) "-P" ""))))


(defun slot-definition-from-property (class property &optional args)
  (with-slots (name flags value-type documentation) property
    (let* ((slot-name (default-slot-name name))
	   (slot-type (or (getf args :type) (type-from-number value-type) value-type))
	   (accessor (default-slot-accessor class slot-name slot-type)))
      
      `(,slot-name
	:allocation :property :pname ,name

	,@(cond
	   ((find :unbound args) (list :unbound (getf args :unbound))))
	
	;; accessors
	,@(cond
	   ((and
	     (member :writable flags) (member :readable flags)
	     (not (member :construct-only flags)))
	    (list :accessor accessor))
	   ((and (member :writable flags) (not (member :construct-only flags)))
	    (list :writer `(setf ,accessor)))
	   ((member :readable flags)
	    (list :reader accessor)))

	;; readable/writable/construct
	,@(when (or (not (member :writable flags))
		    (member :construct-only flags))
	    '(:writable nil))
	,@(when (not (member :readable flags))
	    '(:readable nil))
	,@(when (or (member :construct flags) 
		    (member :construct-only flags))
	    '(:construct t))
	
	;; initargs
	,@(when (or (member :construct flags)
		    (member :construct-only flags)
		    (member :writable flags))
	    (list :initarg (intern (string slot-name) "KEYWORD")))
	
	:type ,slot-type
	:documentation ,documentation))))


(defun slot-definitions (class properties slots)
  (loop 
   for property in properties
   as slot = (or
	      (find (param-name property) slots 
	       :key #'(lambda (slot) (getf (rest slot) :pname)) 
	       :test #'string=)
	      (find (param-name property) slots 
	       :key #'first :test #'string-equal))
   do (cond
       ((not slot) 
	(push (slot-definition-from-property class property) slots))
       ((getf (rest slot) :merge)
	(setf 
	 (rest slot) 
	 (rest (slot-definition-from-property class property (rest slot)))))))
  (delete-if #'(lambda (slot) (getf (rest slot) :ignore)) slots))


(defun expand-gobject-type (type &optional options (metaclass 'gobject-class))
  (let ((supers (cons (supertype type) (implements type)))
	(class  (type-from-number type))
	(slots (getf options :slots)))    
    `(defclass ,class ,supers
      ,(slot-definitions class (query-object-class-properties type) slots)
      (:metaclass ,metaclass)
      (:alien-name ,(find-type-name type)))))


(register-derivable-type 'gobject "GObject" 'expand-gobject-type)


;;; Pseudo type for gobject instances which have their reference count
;;; increased by the returning function

(defmethod alien-type ((type (eql 'referenced)) &rest args)
  (declare (ignore type args))
  (alien-type 'gobject))

(defmethod from-alien-form (form (type (eql 'referenced)) &rest args)
  (declare (ignore type))
  (destructuring-bind (type) args
    (if (subtypep type 'gobject)
	(let ((instance (make-symbol "INSTANCE")))
	  `(let ((,instance ,(from-alien-form form type)))
	     (when ,instance
	       (%object-unref (proxy-location ,instance)))
	     ,instance))
      (error "~A is not a subclass of GOBJECT" type))))

(export 'referenced)
Commit	Line	Data
560af5c5	1	;; Common Lisp bindings for GTK+ v2.0
82747bbd	2	;; Copyright (C) 2000-2001 Espen S. Johnsen <esj@stud.cs.uit.no>
560af5c5	3	;;
	4	;; This library is free software; you can redistribute it and/or
	5	;; modify it under the terms of the GNU Lesser General Public
	6	;; License as published by the Free Software Foundation; either
	7	;; version 2 of the License, or (at your option) any later version.
	8	;;
	9	;; This library is distributed in the hope that it will be useful,
	10	;; but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	12	;; Lesser General Public License for more details.
	13	;;
	14	;; You should have received a copy of the GNU Lesser General Public
	15	;; License along with this library; if not, write to the Free Software
	16	;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	17
ae37d096	18	;; $Id: gobject.lisp,v 1.25 2004-12-28 20:29:05 espen Exp $
560af5c5	19
	20	(in-package "GLIB")
	21
	22
2176a9c7	23	;;;; Metaclass used for subclasses of gobject
	24
	25	(eval-when (:compile-toplevel :load-toplevel :execute)
	26	(defclass gobject-class (ginstance-class)
	27	())
	28
	29	(defmethod validate-superclass ((class gobject-class)
	30	(super pcl::standard-class))
	31	; (subtypep (class-name super) 'gobject)
	32	t))
	33
	34	(defclass direct-property-slot-definition (direct-virtual-slot-definition)
	35	((pname :reader slot-definition-pname :initarg :pname)
	36	(readable :initform t :reader slot-readable-p :initarg :readable)
	37	(writable :initform t :reader slot-writable-p :initarg :writable)
	38	(construct :initform nil :initarg :construct)))
	39
	40	(defclass effective-property-slot-definition (effective-virtual-slot-definition)
	41	((pname :reader slot-definition-pname :initarg :pname)
	42	(readable :reader slot-readable-p :initarg :readable)
	43	(writable :reader slot-writable-p :initarg :writable)
	44	(construct :initarg :construct)));)
	45
	46	(defbinding %object-ref () pointer
	47	(location pointer))
	48
	49	(defbinding %object-unref () nil
	50	(location pointer))
	51
	52	(defmethod reference-foreign ((class gobject-class) location)
	53	(declare (ignore class))
	54	(%object-ref location))
	55
	56	(defmethod unreference-foreign ((class gobject-class) location)
	57	(declare (ignore class))
	58	(%object-unref location))
	59
	60
	61	; (defbinding object-class-install-param () nil
	62	; (class pointer)
	63	; (id unsigned-int)
	64	; (parameter parameter))
	65
	66	; (defbinding object-class-find-param-spec () parameter
	67	; (class pointer)
	68	; (name string))
	69
	70	(defun signal-name-to-string (name)
	71	(substitute #\_ #\- (string-downcase (string name))))
	72
	73
	74	(defmethod direct-slot-definition-class ((class gobject-class) &rest initargs)
	75	(case (getf initargs :allocation)
	76	(:property (find-class 'direct-property-slot-definition))
	77	(t (call-next-method))))
	78
	79	(defmethod effective-slot-definition-class ((class gobject-class) &rest initargs)
	80	(case (getf initargs :allocation)
	81	(:property (find-class 'effective-property-slot-definition))
	82	(t (call-next-method))))
	83
	84	(defmethod compute-effective-slot-definition-initargs ((class gobject-class) direct-slotds)
eeda1c2d	85	(if (typep (first direct-slotds) 'direct-property-slot-definition)
2176a9c7	86	(nconc
	87	(list :pname (signal-name-to-string
	88	(most-specific-slot-value direct-slotds 'pname))
	89	:readable (most-specific-slot-value direct-slotds 'readable)
	90	:writable (most-specific-slot-value direct-slotds 'writable)
	91	:construct (most-specific-slot-value direct-slotds 'construct))
	92	(call-next-method))
	93	(call-next-method)))
	94
	95
	96	(defmethod initialize-internal-slot-functions ((slotd effective-property-slot-definition))
	97	(let* ((type (slot-definition-type slotd))
	98	(pname (slot-definition-pname slotd))
	99	(type-number (find-type-number type)))
eeda1c2d	100	(when (and (not (slot-boundp slotd 'getter)) (slot-readable-p slotd))
2176a9c7	101	(setf
eeda1c2d	102	(slot-value slotd 'getter)
	103	(let ((reader nil))
	104	#'(lambda (object)
	105	(unless reader
ae37d096	106	(setq reader (reader-function type))) ;(type-from-number type-number))))
eeda1c2d	107	(let ((gvalue (gvalue-new type-number)))
	108	(%object-get-property object pname gvalue)
	109	(unwind-protect
	110	(funcall reader gvalue +gvalue-value-offset+)
	111	(gvalue-free gvalue t)))))))
2176a9c7	112
eeda1c2d	113	(when (and (not (slot-boundp slotd 'setter)) (slot-writable-p slotd))
2176a9c7	114	(setf
eeda1c2d	115	(slot-value slotd 'setter)
	116	(let ((writer nil))
	117	#'(lambda (value object)
	118	(unless writer
ae37d096	119	(setq writer (writer-function type))) ;(type-from-number type-number))))
eeda1c2d	120	(let ((gvalue (gvalue-new type-number)))
	121	(funcall writer value gvalue +gvalue-value-offset+)
	122	(%object-set-property object pname gvalue)
	123	(gvalue-free gvalue t)
	124	value))))))
	125
2176a9c7	126	(call-next-method))
	127
	128
	129	;;;; Super class for all classes in the GObject type hierarchy
	130
560af5c5	131	(eval-when (:compile-toplevel :load-toplevel :execute)
c8c48a4c	132	(defclass gobject (ginstance)
560af5c5	133	()
2176a9c7	134	(:metaclass gobject-class)
9adccb27	135	(:alien-name "GObject")))
9adccb27	136
eeda1c2d	137
	138	(defun initial-add (object function initargs key pkey)
	139	(loop
	140	as (initarg value . rest) = initargs then rest
	141	do (cond
	142	((eq initarg key) (funcall function object value))
	143	((eq initarg pkey) (mapc #'(lambda (value)
	144	(funcall function object value))
	145	value)))
	146	while rest))
	147
	148	(defun initial-apply-add (object function initargs key pkey)
	149	(initial-add object #'(lambda (object value)
	150	(apply function object (mklist value)))
	151	initargs key pkey))
	152
	153
82747bbd	154	(defmethod initialize-instance ((object gobject) &rest initargs)
040579dd	155	(unless (slot-boundp object 'location)
	156	;; Extract initargs which we should pass directly to the GObeject
	157	;; constructor
	158	(let* ((slotds (class-slots (class-of object)))
	159	(args (when initargs
	160	(loop
	161	as (key value . rest) = initargs then rest
	162	as slotd = (find-if
	163	#'(lambda (slotd)
	164	(member key (slot-definition-initargs slotd)))
	165	slotds)
	166	when (and (typep slotd 'effective-property-slot-definition)
	167	(slot-value slotd 'construct))
	168	collect (progn
	169	(remf initargs key)
	170	(list
	171	(slot-definition-pname slotd)
	172	(slot-definition-type slotd)
	173	value))
	174	while rest))))
	175	(if args
	176	(let* ((string-size (size-of 'string))
	177	(string-writer (writer-function 'string))
	178	(string-destroy (destroy-function 'string))
	179	(params (allocate-memory
	180	(* (length args) (+ string-size +gvalue-size+)))))
9adccb27	181	(loop
040579dd	182	for (pname type value) in args
9adccb27	183	as tmp = params then (sap+ tmp (+ string-size +gvalue-size+))
040579dd	184	do (funcall string-writer pname tmp)
	185	(gvalue-init (sap+ tmp string-size) type value))
	186	(unwind-protect
	187	(setf
	188	(slot-value object 'location)
	189	(%gobject-newv (type-number-of object) (length args) params))
	190	(loop
	191	repeat (length args)
	192	as tmp = params then (sap+ tmp (+ string-size +gvalue-size+))
	193	do (funcall string-destroy tmp)
	194	(gvalue-unset (sap+ tmp string-size)))
	195	(deallocate-memory params)))
8755b1a5	196	(setf
8755b1a5	197	(slot-value object 'location)
040579dd	198	(%gobject-new (type-number-of object))))))
8755b1a5	199
4d83a8a6	200	(apply #'call-next-method object initargs))
	201
	202
1dbf4216	203	(defmethod instance-finalizer ((instance gobject))
	204	(let ((location (proxy-location instance)))
	205	#'(lambda ()
	206	(remove-cached-instance location)
1dbf4216	207	(%object-unref location))))
1dbf4216	208
9adccb27	209
d4b21b08	210	(defbinding (%gobject-new "g_object_new") () pointer
a9044181	211	(type type-number)
a9044181	212	(nil null))
560af5c5	213
9adccb27	214	(defbinding (%gobject-newv "g_object_newv") () pointer
4d83a8a6	215	(type type-number)
4d83a8a6	216	(n-parameters unsigned-int)
9adccb27	217	(params pointer))
de8516ca	218
de8516ca	219
d4b21b08	220
323d4265	221	;;;; Property stuff
560af5c5	222
26b133ed	223	(defbinding %object-set-property () nil
c8c48a4c	224	(object gobject)
	225	(name string)
	226	(value gvalue))
86d9d6ab	227
26b133ed	228	(defbinding %object-get-property () nil
c8c48a4c	229	(object gobject)
c8c48a4c	230	(name string)
a9044181	231	(value gvalue))
86d9d6ab	232
26b133ed	233	(defbinding %object-notify () nil
c8c48a4c	234	(object gobject)
c8c48a4c	235	(name string))
86d9d6ab	236
26b133ed	237	(defbinding object-freeze-notify () nil
a9044181	238	(object gobject))
86d9d6ab	239
26b133ed	240	(defbinding object-thaw-notify () nil
a9044181	241	(object gobject))
86d9d6ab	242
26b133ed	243	(defbinding %object-set-qdata-full () nil
86d9d6ab	244	(object gobject)
	245	(id quark)
	246	(data unsigned-long)
	247	(destroy-marshal pointer))
	248
a9044181	249
	250	;;;; User data
	251
86d9d6ab	252	(defun (setf object-data) (data object key &key (test #'eq))
	253	(%object-set-qdata-full
	254	object (quark-from-object key :test test)
0f134a29	255	(register-user-data data) (callback %destroy-user-data))
86d9d6ab	256	data)
86d9d6ab	257
26b133ed	258	(defbinding %object-get-qdata () unsigned-long
86d9d6ab	259	(object gobject)
	260	(id quark))
	261
	262	(defun object-data (object key &key (test #'eq))
	263	(find-user-data
	264	(%object-get-qdata object (quark-from-object key :test test))))
	265
	266
d4b21b08	267	;;;;
d4b21b08	268
323d4265	269	(defbinding %object-class-list-properties () pointer
d4b21b08	270	(class pointer)
	271	(n-properties unsigned-int :out))
	272
9c03a07c	273
	274	(defun %map-params (params length type inherited-p)
	275	(if inherited-p
9adccb27	276	(map-c-vector 'list #'identity params 'param length)
9c03a07c	277	(let ((properties ()))
9adccb27	278	(map-c-vector 'list
9c03a07c	279	#'(lambda (param)
	280	(when (eql (param-owner-type param) type)
	281	(push param properties)))
	282	params 'param length)
	283	(nreverse properties))))
	284
	285	(defun query-object-class-properties (type &optional inherited-p)
	286	(let* ((type-number (find-type-number type))
	287	(class (type-class-ref type-number)))
	288	(unwind-protect
	289	(multiple-value-bind (array length)
	290	(%object-class-list-properties class)
	291	(unwind-protect
	292	(%map-params array length type-number inherited-p)
	293	(deallocate-memory array)))
	294	; (type-class-unref type-number)
	295	)))
d4b21b08	296
	297
	298	(defun default-slot-name (name)
	299	(intern (substitute #\- #\_ (string-upcase (string-upcase name)))))
	300
	301	(defun default-slot-accessor (class-name slot-name type)
	302	(intern
	303	(format
	304	nil "~A-~A~A" class-name slot-name
4d83a8a6	305	(if (eq type 'boolean) "-P" ""))))
d4b21b08	306
323d4265	307
eeda1c2d	308	(defun slot-definition-from-property (class property &optional args)
9c03a07c	309	(with-slots (name flags value-type documentation) property
9c03a07c	310	(let* ((slot-name (default-slot-name name))
eeda1c2d	311	(slot-type (or (getf args :type) (type-from-number value-type) value-type))
9c03a07c	312	(accessor (default-slot-accessor class slot-name slot-type)))
	313
	314	`(,slot-name
	315	:allocation :property :pname ,name
eeda1c2d	316
eeda1c2d	317	,@(cond
ae37d096	318	((find :unbound args) (list :unbound (getf args :unbound))))
9c03a07c	319
	320	;; accessors
	321	,@(cond
	322	((and
	323	(member :writable flags) (member :readable flags)
	324	(not (member :construct-only flags)))
	325	(list :accessor accessor))
	326	((and (member :writable flags) (not (member :construct-only flags)))
	327	(list :writer `(setf ,accessor)))
	328	((member :readable flags)
	329	(list :reader accessor)))
	330
	331	;; readable/writable/construct
	332	,@(when (or (not (member :writable flags))
	333	(member :construct-only flags))
	334	'(:writable nil))
	335	,@(when (not (member :readable flags))
	336	'(:readable nil))
	337	,@(when (or (member :construct flags)
	338	(member :construct-only flags))
	339	'(:construct t))
	340
	341	;; initargs
	342	,@(when (or (member :construct flags)
	343	(member :construct-only flags)
	344	(member :writable flags))
	345	(list :initarg (intern (string slot-name) "KEYWORD")))
	346
	347	:type ,slot-type
	348	:documentation ,documentation))))
	349
	350
	351	(defun slot-definitions (class properties slots)
	352	(loop
9c03a07c	353	for property in properties
eeda1c2d	354	as slot = (or
	355	(find (param-name property) slots
	356	:key #'(lambda (slot) (getf (rest slot) :pname))
	357	:test #'string=)
	358	(find (param-name property) slots
	359	:key #'first :test #'string-equal))
	360	do (cond
	361	((not slot)
	362	(push (slot-definition-from-property class property) slots))
	363	((getf (rest slot) :merge)
	364	(setf
	365	(rest slot)
	366	(rest (slot-definition-from-property class property (rest slot)))))))
9c03a07c	367	(delete-if #'(lambda (slot) (getf (rest slot) :ignore)) slots))
	368
	369
	370	(defun expand-gobject-type (type &optional options (metaclass 'gobject-class))
	371	(let ((supers (cons (supertype type) (implements type)))
	372	(class (type-from-number type))
	373	(slots (getf options :slots)))
	374	`(defclass ,class ,supers
	375	,(slot-definitions class (query-object-class-properties type) slots)
	376	(:metaclass ,metaclass)
	377	(:alien-name ,(find-type-name type)))))
323d4265	378
d4b21b08	379
9c03a07c	380	(register-derivable-type 'gobject "GObject" 'expand-gobject-type)
ae37d096	381
	382
	383	;;; Pseudo type for gobject instances which have their reference count
	384	;;; increased by the returning function
	385
	386	(defmethod alien-type ((type (eql 'referenced)) &rest args)
	387	(declare (ignore type args))
	388	(alien-type 'gobject))
	389
	390	(defmethod from-alien-form (form (type (eql 'referenced)) &rest args)
	391	(declare (ignore type))
	392	(destructuring-bind (type) args
	393	(if (subtypep type 'gobject)
	394	(let ((instance (make-symbol "INSTANCE")))
	395	`(let ((,instance ,(from-alien-form form type)))
	396	(when ,instance
	397	(%object-unref (proxy-location ,instance)))
	398	,instance))
	399	(error "~A is not a subclass of GOBJECT" type))))
	400
	401	(export 'referenced)