-;; Common Lisp bindings for GTK+ v2.0
-;; Copyright (C) 2000 Espen S. Johnsen <esj@stud.cs.uit.no>
+;; Common Lisp bindings for GTK+ v2.x
+;; Copyright 2000-2006 Espen S. Johnsen <espen@users.sf.net>
;;
-;; 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.
+;; Permission is hereby granted, free of charge, to any person obtaining
+;; a copy of this software and associated documentation files (the
+;; "Software"), to deal in the Software without restriction, including
+;; without limitation the rights to use, copy, modify, merge, publish,
+;; distribute, sublicense, and/or sell copies of the Software, and to
+;; permit persons to whom the Software is furnished to do so, subject to
+;; the following conditions:
;;
-;; 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.
+;; The above copyright notice and this permission notice shall be
+;; included in all copies or substantial portions of the Software.
;;
-;; 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
+;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+;; IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+;; CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+;; TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+;; SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-;; $Id: gobject.lisp,v 1.3 2000-11-09 20:29:19 espen Exp $
+;; $Id: gobject.lisp,v 1.59 2008-11-04 03:22:23 espen Exp $
(in-package "GLIB")
-(eval-when (:compile-toplevel :load-toplevel :execute)
- (defclass gobject (ginstance)
- ()
- (:metaclass ginstance-class)
- (:alien-name "GObject"))
-
- (defclass gobject-class (ginstance-class)))
-
+;;;; Metaclass used for subclasses of gobject
-;;;; Reference counting for gobject
-
-;; Specializing reference-instance and unreference-instance on gobject
-;; is not really necessary but done for efficiency
+(eval-when (:compile-toplevel :load-toplevel :execute)
+;; (push :debug-ref-counting *features*)
+ (defclass gobject-class (ginstance-class)
+ ((instance-slots-p :initform nil :reader instance-slots-p
+ :documentation "Non NIL if the class has slots with instance allocation")))
+
+ (defmethod validate-superclass ((class gobject-class) (super standard-class))
+; (subtypep (class-name super) 'gobject)
+ t))
+
+(defmethod slot-unbound (metaclass (class gobject-class) (slot (eql 'ref)))
+ (assert (class-direct-superclasses class))
+ (setf (slot-value class 'ref)
+ #?-(pkg-exists-p "glib-2.0" :atleast-version "2.10.0") '%object-ref
+ #?(pkg-exists-p "glib-2.0" :atleast-version "2.10.0")
+ ;; We do this hack instead of creating a new metaclass to avoid
+ ;; breaking backward compatibility
+ (if (subtypep (class-name class) 'initially-unowned)
+ '%object-ref-sink
+ '%object-ref)))
+
+(defmethod slot-unbound (metaclass (class gobject-class) (slot (eql 'unref)))
+ (setf (slot-value class 'unref) '%object-unref))
+
+
+(defclass direct-property-slot-definition (direct-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-only :initarg :construct-only :reader construct-only-property-p)))
+
+(defclass effective-property-slot-definition (effective-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-only :initform nil :initarg :construct-only :reader construct-only-property-p)))
+
+(defclass direct-user-data-slot-definition (direct-virtual-slot-definition)
+ ())
+
+(defclass effective-user-data-slot-definition (effective-virtual-slot-definition)
+ ())
+
+
+(defbinding %object-ref () pointer
+ (location pointer))
+
+(defbinding %object-unref () nil
+ (location pointer))
+
+#?(pkg-exists-p "glib-2.0" :atleast-version "2.8.0")
+(progn
+ (define-callback toggle-ref-callback nil
+ ((data pointer) (location pointer) (last-ref-p boolean))
+ (declare (ignore data))
+ #+debug-ref-counting
+ (if last-ref-p
+ (format t "Object at 0x~8,'0X has no foreign references~%" (pointer-address location))
+ (format t "Foreign reference added to object at 0x~8,'0X~%" (pointer-address location)))
+ (if last-ref-p
+ (cache-instance (find-cached-instance location) t)
+ (cache-instance (find-cached-instance location) nil)))
+
+ (defbinding %object-add-toggle-ref (location) pointer
+ (location pointer)
+ (toggle-ref-callback callback)
+ (nil null))
+
+ (defbinding %object-remove-toggle-ref (location) pointer
+ (location pointer)
+ (toggle-ref-callback callback)
+ (nil null)))
+
+#+debug-ref-counting
+(progn
+ (define-callback weak-ref-callback nil ((data pointer) (location pointer))
+ (format t "Object at 0x~8,'0X (~A) being finalized~%" (pointer-address location) (type-from-number (%type-number-of-ginstance location))))
+
+ (defbinding %object-weak-ref (location) pointer
+ (location pointer)
+ (weak-ref-callback callback)
+ (nil null)))
+
+
+; (defbinding object-class-install-param () nil
+; (class pointer)
+; (id unsigned-int)
+; (parameter parameter))
-(defmethod reference-instance ((object gobject))
- (%object-ref object)
- object)
+; (defbinding object-class-find-param-spec () parameter
+; (class pointer)
+; (name string))
-(defmethod unreference-instance ((object gobject))
- (%object-unref object))
+(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))
+ (:user-data (find-class 'direct-user-data-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))
+ (:user-data (find-class 'effective-user-data-slot-definition))
+ (t (call-next-method))))
+
+(defmethod compute-effective-slot-definition-initargs ((class gobject-class) direct-slotds)
+ (if (eq (slot-definition-allocation (first direct-slotds)) :property)
+ (nconc
+ (compute-most-specific-initargs direct-slotds
+ '(pname construct-only readable writable))
+ (call-next-method))
+ (call-next-method)))
+
+
+(defvar *ignore-setting-construct-only-property* nil)
+(declaim (special *ignore-setting-construct-only-property*))
+
+(defmethod compute-slot-reader-function ((slotd effective-property-slot-definition) &optional signal-unbound-p)
+ (declare (ignore signal-unbound-p))
+ (let* ((type (slot-definition-type slotd))
+ (pname (slot-definition-pname slotd))
+ (get-reader (reader-function type :ref :get))
+ (peek-reader (reader-function type :ref :peek)))
+ #'(lambda (object)
+ (with-memory (gvalue +gvalue-size+)
+ (%gvalue-init gvalue (find-type-number type))
+ (%object-get-property object pname gvalue)
+ (if (gvalue-static-p gvalue)
+ (funcall peek-reader gvalue +gvalue-value-offset+)
+ (funcall get-reader gvalue +gvalue-value-offset+))))))
+
+(defmethod compute-slot-writer-function :around ((slotd effective-property-slot-definition))
+ (if (construct-only-property-p slotd)
+ #'(lambda (value object)
+ (declare (ignore value))
+ (unless *ignore-setting-construct-only-property*
+ (error 'unwritable-slot :name (slot-definition-name slotd) :instance object)))
+ (call-next-method)))
+
+(defmethod compute-slot-writer-function ((slotd effective-property-slot-definition))
+ (let* ((type (slot-definition-type slotd))
+ (pname (slot-definition-pname slotd))
+ (writer (writer-function type :temp t))
+ (destroy (destroy-function type :temp t)))
+ #'(lambda (value object)
+ (with-memory (gvalue +gvalue-size+)
+ (%gvalue-init gvalue (find-type-number type))
+ (funcall writer value gvalue +gvalue-value-offset+)
+ (%object-set-property object pname gvalue)
+ (funcall destroy gvalue +gvalue-value-offset+))
+ value)))
+
+(defmethod slot-readable-p ((slotd effective-user-data-slot-definition))
+ (declare (ignore slotd))
+ t)
+
+(defmethod compute-slot-reader-function ((slotd effective-user-data-slot-definition) &optional signal-unbound-p)
+ (declare (ignore signal-unbound-p))
+ (let ((slot-name (slot-definition-name slotd)))
+ #'(lambda (object)
+ (user-data object slot-name))))
+
+(defmethod compute-slot-boundp-function ((slotd effective-user-data-slot-definition))
+ (let ((slot-name (slot-definition-name slotd)))
+ #'(lambda (object)
+ (user-data-p object slot-name))))
+
+(defmethod slot-writable-p ((slotd effective-user-data-slot-definition))
+ (declare (ignore slotd))
+ t)
+
+(defmethod compute-slot-writer-function ((slotd effective-user-data-slot-definition))
+ (let ((slot-name (slot-definition-name slotd)))
+ #'(lambda (value object)
+ (setf (user-data object slot-name) value))))
+
+(defmethod compute-slot-makunbound-function ((slotd effective-user-data-slot-definition))
+ (let ((slot-name (slot-definition-name slotd)))
+ #'(lambda (object)
+ (unset-user-data object slot-name))))
+
+(defmethod compute-slots :around ((class gobject-class))
+ (let ((slots (call-next-method)))
+ (when (some #'(lambda (slotd)
+ (and
+ (eq (slot-definition-allocation slotd) :instance)
+ (not (typep slotd 'effective-special-slot-definition))))
+ slots)
+ (setf (slot-value class 'instance-slots-p) t))
+ slots))
+
+
+;;;; Super class for all classes in the GObject type hierarchy
-(deftype-method alien-ref gobject (type-spec)
- (declare (ignore type-spec))
- '%object-ref)
+(eval-when (:compile-toplevel :load-toplevel :execute)
+ (defclass gobject (ginstance)
+ (#+debug-ref-counting
+ (ref-count :allocation :alien :type int :reader ref-count))
+ (:metaclass gobject-class)
+ (:gtype "GObject")))
+
+#+debug-ref-counting
+(defmethod print-object ((instance gobject) stream)
+ (print-unreadable-object (instance stream :type t :identity nil)
+ (if (proxy-valid-p instance)
+ (format stream "at 0x~X (~D)" (pointer-address (foreign-location instance)) (ref-count instance))
+ (write-string "at \"unbound\"" stream))))
+
+
+(define-type-method reader-function ((type gobject) &key (ref :read) inlined)
+ (assert-not-inlined type inlined)
+ (ecase ref
+ ((:read :peek) (call-next-method type :ref :read))
+ (:get
+ #'(lambda (location &optional (offset 0))
+ (let ((instance (ref-pointer location offset)))
+ (unless (null-pointer-p instance)
+ (multiple-value-bind (gobject new-p)
+ (ensure-proxy-instance 'gobject instance :reference nil)
+ (unless new-p
+ (%object-unref instance))
+ (setf (ref-pointer location offset) (make-pointer 0))
+ gobject)))))))
+
+(define-type-method callback-wrapper ((type gobject) var arg form)
+ (let ((class (type-expand type)))
+ `(let ((,var (ensure-proxy-instance ',class ,arg)))
+ ,form)))
+
+(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 make-proxy-instance ((class gobject-class) location &rest initargs)
+ (declare (ignore location initargs))
+ (if (slot-value class 'instance-slots-p)
+ (error "Objects of class ~A has instance slots and should only be created with MAKE-INSTANCE" class)
+ (call-next-method)))
+
+(defparameter +gparameter-gvalue-offset+
+ (max (size-of 'pointer) (type-alignment '(unsigned-byte 64))))
+(defparameter +gparameter-size+
+ (+ +gparameter-gvalue-offset+ +gvalue-size+))
+
+(defmethod allocate-foreign ((object gobject) &rest initargs)
+ (let ((init-slots ()))
+ (flet ((value-from-initargs (slotd)
+ (loop
+ with slot-initargs = (slot-definition-initargs slotd)
+ for (initarg value) on initargs by #'cddr
+ when (find initarg slot-initargs)
+ do (return (values value t)))))
+
+ (loop
+ for slotd in (class-slots (class-of object))
+ when (and
+ (eq (slot-definition-allocation slotd) :property)
+ (construct-only-property-p slotd))
+ do (multiple-value-bind (value initarg-p) (value-from-initargs slotd)
+ (cond
+ (initarg-p (push (cons slotd value) init-slots))
+ ((slot-definition-initfunction slotd)
+ (push
+ (cons slotd (funcall (slot-definition-initfunction slotd)))
+ init-slots))))))
+
+ (cond
+ (init-slots
+ (let* ((num-slots (length init-slots)))
+ (with-memory (params (* num-slots +gparameter-size+))
+ (loop
+ with string-writer = (writer-function 'string)
+ for (slotd . value) in init-slots
+ as param = params then (pointer+ param +gparameter-size+)
+ as type = (slot-definition-type slotd)
+ as pname = (slot-definition-pname slotd)
+ do (funcall string-writer pname param)
+ (gvalue-init
+ (pointer+ param +gparameter-gvalue-offset+) type value))
+
+ (unwind-protect
+ (%gobject-newv (type-number-of object) num-slots params)
+
+ (loop
+ with string-destroy = (destroy-function 'string)
+ repeat num-slots
+ as param = params then (pointer+ param +gparameter-size+)
+ do (funcall string-destroy param)
+ (gvalue-unset (pointer+ param +gparameter-gvalue-offset+)))))))
+
+ (t (%gobject-new (type-number-of object))))))
+
+
+(defmethod shared-initialize ((object gobject) names &rest initargs)
+ (declare (ignore names initargs))
+ (let ((*ignore-setting-construct-only-property* t))
+ (call-next-method)))
+
+(defmethod initialize-instance :around ((object gobject) &rest initargs)
+ (declare (ignore initargs))
+ (prog1
+ (call-next-method)
+ (let ((location (foreign-location object)))
+ #+debug-ref-counting(%object-weak-ref location)
+ #?(pkg-exists-p "glib-2.0" :atleast-version "2.8.0")
+ (when (slot-value (class-of object) 'instance-slots-p)
+ (%object-add-toggle-ref location)
+ (%object-unref location)))))
+
+
+(defmethod instance-finalizer ((instance gobject))
+ (let ((location (foreign-location instance)))
+ #?(pkg-exists-p "glib-2.0" :atleast-version "2.8.0")
+ (if (slot-value (class-of instance) 'instance-slots-p)
+ #'(lambda ()
+ #+debug-ref-counting
+ (format t "Finalizing proxy for 0x~8,'0X (~A)~%"
+ (pointer-address location)
+ (find-foreign-type-name (%type-number-of-ginstance location)))
+ (%object-remove-toggle-ref location))
+ #'(lambda ()
+ #+debug-ref-counting
+ (format t "Finalizing proxy for 0x~8,'0X (~A)~%"
+ (pointer-address location)
+ (find-foreign-type-name (%type-number-of-ginstance location)))
+ (%object-unref location)))
+ #?-(pkg-exists-p "glib-2.0" :atleast-version "2.8.0")
+ #'(lambda ()
+ (%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))
+
+
+;;;; Floating references
+
+#?(pkg-exists-p "glib-2.0" :atleast-version "2.10.0")
+(progn
+ (defclass initially-unowned (gobject)
+ ()
+ (:metaclass gobject-class)
+ (:gtype "GInitiallyUnowned"))
-(deftype-method alien-unref gobject (type-spec)
- (declare (ignore type-spec))
- '%object-unref)
+ (defbinding %object-ref-sink () pointer
+ (location pointer))
-(define-foreign %object-ref () pointer
- (object (or gobject pointer)))
+ (defbinding %object-is-floating () boolean
+ (location pointer))
-(define-foreign %object-unref () nil
- (object (or gobject pointer)))
+ (defmethod initialize-instance :before ((object initially-unowned) &rest initargs)
+ (declare (ignore initargs))
+ (%object-ref-sink (foreign-location object))))
-;;;; Parameter stuff
+;;;; Property stuff
-(define-foreign %object-set-param () nil
+(defbinding %object-set-property () nil
(object gobject)
(name string)
(value gvalue))
-(define-foreign %object-get-param () nil
+(defbinding %object-get-property () nil
(object gobject)
(name string)
- (value gvalue :out))
+ (value gvalue))
-(define-foreign object-queue-param-changed () nil
+(defbinding %object-notify () nil
(object gobject)
(name string))
+(defbinding object-freeze-notify () nil
+ (object gobject))
+
+(defbinding object-thaw-notify () nil
+ (object gobject))
+;;;; User data
-(define-foreign %object-set-qdata-full () nil
+(defgeneric (setf user-data) (data object key))
+(defgeneric user-data (object key))
+(defgeneric user-data-p (object key))
+(defgeneric unset-user-data (object key))
+
+(defbinding %object-set-qdata-full () nil
(object gobject)
(id quark)
- (data unsigned-long)
- (destroy-marshal pointer))
+ (data pointer-data)
+ (destroy-marshal callback))
+
+(define-callback user-data-destroy-callback nil ((id pointer-data))
+ (destroy-user-data id))
-(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) *destroy-notify*)
+(defmethod (setf user-data) (data (object gobject) key)
+ (%object-set-qdata-full object (quark-intern key)
+ (register-user-data data) user-data-destroy-callback)
data)
-(define-foreign %object-get-qdata () unsigned-long
+(defbinding %object-get-qdata () pointer-data
(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))))
-
-
-
-
-
-
-;;;; Methods for gobject-class
-
-(defmethod shared-initialize ((class gobject-class) names &rest initargs
- &key type-init name)
- (declare (ignore initargs names))
- (let ((alien
- (alien::%heap-alien
- (alien::make-heap-alien-info
- :type (alien::parse-alien-type '(function (unsigned 32)))
- :sap-form (system:foreign-symbol-address
- (or
- (first type-init)
- (default-alien-func-name
- (format
- nil "~A_get_type" (or name (class-name class))))))))))
- (alien:alien-funcall alien))
- (call-next-method))
+(defmethod user-data ((object gobject) key)
+ (find-user-data (%object-get-qdata object (quark-intern key))))
+(defmethod user-data-p ((object gobject) key)
+ (user-data-exists-p (%object-get-qdata object (quark-intern key))))
-; (define-foreign object-class-install-param () nil
-; (class pointer)
-; (id unsigned-int)
-; (parameter parameter))
-
-; (define-foreign object-class-find-param-spec () parameter
-; (class pointer)
-; (name string))
+(defbinding %object-steal-qdata () pointer-data
+ (object gobject)
+ (id quark))
+(defmethod unset-user-data ((object gobject) key)
+ (destroy-user-data (%object-steal-qdata object (quark-intern key))))
+
+
+;;;;
+
+(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 t))
+ (class (type-class-ref type-number)))
+ (unwind-protect
+ (multiple-value-bind (array length)
+ (%object-class-list-properties class)
+ (unless (null-pointer-p array)
+ (unwind-protect
+ (%map-params array length type-number inherited-p)
+ (deallocate-memory array))))
+; (type-class-unref type-number)
+ )))
+
+
+(defun default-slot-name (name)
+ (let ((prefix-len (length (package-prefix))))
+ (intern (substitute #\- #\_
+ (string-upcase
+ (if (and
+ (string-prefix-p (package-prefix) name)
+ (char= #\- (char name prefix-len)))
+ (subseq name (1+ prefix-len))
+ 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 slot-name args)
+ (with-slots (name flags value-type documentation) property
+ (let* ((slot-name (or slot-name (default-slot-name name)))
+ (slot-type (or (getf args :type) (type-from-number value-type) 'pointer))
+ (accessor (default-slot-accessor class slot-name slot-type)))
+
+ `(,slot-name
+ :allocation :property :pname ,name
+
+ ,@(when (find :unbound args) (list :unbound (getf args :unbound)))
+ ,@(when (find :getter args) (list :getter (getf args :getter)))
+ ,@(when (find :setter args) (list :setter (getf args :setter)))
+
+ ;; 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 (member :construct-only flags)
+ '(:construct-only t))
+
+ ;; initargs
+ ,@(if (find :initarg args)
+ (let ((initarg (getf args :initarg)))
+ (etypecase initarg
+ (null ())
+ (symbol `(:initarg ,initarg))))
+ (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 (first slot) (rest slot)))))))
+ (delete-if #'(lambda (slot) (getf (rest slot) :ignore)) slots))
+
+
+(defun expand-gobject-type (type forward-p options &optional (metaclass 'gobject-class))
+ (let ((supers (cons (supertype type) (implements type)))
+ (class (type-from-number type))
+ (slots (getf options :slots)))
+ (when (member nil supers)
+ (error "Got NIL as a supertype for ~A (full list: ~A).~%~
+ This shouldn't happen - is the parent type correctly registered?"
+ (find-foreign-type-name type) supers))
+ `(defclass ,class ,supers
+ ,(unless forward-p
+ (slot-definitions class (query-object-class-properties type) slots))
+ (:metaclass ,metaclass)
+ (:gtype ,(register-type-as type)))))
+
+(defun gobject-dependencies (type options)
+ (delete-duplicates
+ (cons
+ (supertype type)
+ (append
+ (type-interfaces type)
+ (mapcar #'param-value-type (query-object-class-properties type))
+ (getf options :dependencies)
+ (loop
+ for slot in (getf options :slots)
+ as type = (getf (rest slot) :type)
+ when (and type (symbolp type) (find-type-number type))
+ collect (find-type-number type))))))
+
+
+(register-derivable-type 'gobject "GObject" 'expand-gobject-type 'gobject-dependencies)
+
+
+;;; Pseudo type for gobject instances which have their reference count
+;;; increased by the returning function
+
+(deftype referenced (type) type)
+
+(define-type-method from-alien-form ((type referenced) form &key (ref :free))
+ (cond
+ ((not (eq ref :free))
+ (error "Keyword arg :REF to FROM-ALIEN-FORM should be :FREE for type ~A. It was give ~A" type ref))
+ ((subtypep type 'gobject)
+ (from-alien-form (second (type-expand-to 'referenced type)) form :ref ref))))
+
+(define-type-method from-alien-function ((type referenced) &key (ref :free))
+ (cond
+ ((not (eq ref :free))
+ (error "Keyword arg :REF to FROM-ALIEN-FUNCTION should be :FREE for type ~A. It was give ~A" type ref))
+; ((subtypep type 'gobject) (call-next-method type ref :free))))
+ ((subtypep type 'gobject)
+ (from-alien-function (second (type-expand-to 'referenced type)) :ref ref))))
~mdw / clg / blobdiff