+;;;; Super class for all classes in the GObject type hierarchy
+
+(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)" (sap-int (foreign-location instance)) (ref-count instance))
+ (write-string "at \"unbound\"" stream))))
+
+
+(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 "An object of class ~A has instance slots and should only be created with MAKE-INSTANCE" class)
+ (call-next-method)))
+
+
+(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 ((element-size (+ +gvalue-size+ +size-of-pointer+))
+ (num-slots (length init-slots)))
+ (with-allocated-memory (params (* num-slots element-size))
+ (loop
+ with string-writer = (writer-function 'string)
+ for (slotd . value) in init-slots
+ as offset = params then (sap+ offset element-size)
+ as type = (slot-definition-type slotd)
+ as pname = (slot-definition-pname slotd)
+ do (funcall string-writer pname offset)
+ (gvalue-init (sap+ offset +size-of-pointer+) type value))
+
+ (unwind-protect
+ (%gobject-newv (type-number-of object) num-slots params)
+
+ (loop
+ with string-destroy = (destroy-function 'string)
+ repeat num-slots
+ as offset = params then (sap+ offset element-size)
+ do (funcall string-destroy offset)
+ (gvalue-unset (sap+ offset +size-of-pointer+)))))))
+
+ (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)
+ #+debug-ref-counting(%object-weak-ref (foreign-location object))
+ #+glib2.8
+ (when (slot-value (class-of object) 'instance-slots-p)
+ (with-slots (location) object
+ (%object-add-toggle-ref location)
+ (%object-unref location)))))
+
+
+(defmethod instance-finalizer ((instance gobject))
+ (let ((location (foreign-location instance)))
+ #+glib2.8
+ (if (slot-value (class-of instance) 'instance-slots-p)
+ #'(lambda ()
+ #+debug-ref-counting
+ (format t "Finalizing proxy for 0x~8,'0X~%" (sap-int location))
+ (remove-cached-instance location)
+ (%object-remove-toggle-ref location))
+ #'(lambda ()
+ #+debug-ref-counting
+ (format t "Finalizing proxy for 0x~8,'0X~%" (sap-int location))
+ (remove-cached-instance location)
+ (%object-unref location)))
+ #-glib2.8
+ #'(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))
+
+
+;;;; User data
+
+(defbinding %object-set-qdata-full () nil
+ (object gobject)
+ (id quark)
+ (data unsigned-long)
+ (destroy-marshal callback))
+
+(define-callback user-data-destroy-callback nil ((id unsigned-int))
+ (destroy-user-data id))
+
+(defun (setf user-data) (data object key)
+ (%object-set-qdata-full object (quark-intern key)
+ (register-user-data data) user-data-destroy-callback)
+ data)
+
+;; deprecated
+(defun (setf object-data) (data object key &key (test #'eq))
+ (assert (eq test #'eq))
+ (setf (user-data object key) data))
+
+(defbinding %object-get-qdata () unsigned-long
+ (object gobject)
+ (id quark))
+
+(defun user-data (object key)
+ (find-user-data (%object-get-qdata object (quark-intern key))))
+
+;; deprecated
+(defun object-data (object key &key (test #'eq))
+ (assert (eq test #'eq))
+ (user-data object key))
+
+(defun user-data-p (object key)
+ (user-data-exists-p (%object-get-qdata object (quark-intern key))))
+
+(defbinding %object-steal-qdata () unsigned-long
+ (object gobject)
+ (id quark))
+
+(defun unset-user-data (object key)
+ (destroy-user-data (%object-steal-qdata object (quark-intern key))))
~mdw / clg / blobdiff