X-Git-Url: https://git.distorted.org.uk/~mdw/clg/blobdiff_plain/b75a7b77f0cdc81c869285feedbd05ceec97cd63..a5c3a5974e1ae2bd11b2a381850639586e466469:/glib/gobject.lisp

diff --git a/glib/gobject.lisp b/glib/gobject.lisp
index 1d6128f..aa59439 100644
--- a/glib/gobject.lisp
+++ b/glib/gobject.lisp
@@ -1,5 +1,5 @@
 ;; Common Lisp bindings for GTK+ v2.0
-;; Copyright (C) 2000 Espen S. Johnsen <esj@stud.cs.uit.no>
+;; 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
@@ -15,7 +15,7 @@
 ;; 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 1.4 2001/01/28 14:17:12 espen Exp $
+;; $Id: gobject.lisp,v 1.16 2004/11/03 16:18:16 espen Exp $
 
 (in-package "GLIB")
 
@@ -24,66 +24,110 @@
   (defclass gobject (ginstance)
     ()
     (:metaclass ginstance-class)
-    (:alien-name "GObject")))
+    (:alien-name "GObject")
+    (:copy %object-ref)
+    (:free %object-unref)))
+
+
+(defmethod initialize-instance ((object gobject) &rest initargs)
+  (let ((slotds (class-slots (class-of object)))
+	(names (make-array 0 :adjustable t :fill-pointer t))
+	(values (make-array 0 :adjustable t :fill-pointer t)))
+
+    (loop 
+     as tmp = initargs then (cddr tmp) while tmp
+     as key = (first tmp)
+     as value = (second tmp)
+     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))
+     do (let ((type (find-type-number (slot-definition-type slotd))))
+	  (vector-push-extend (slot-definition-pname slotd) names)
+	  (vector-push-extend (gvalue-new type value) values)
+	  (remf initargs key)))
+
+    (setf  
+     (slot-value object 'location) 
+     (if (zerop (length names))
+	 (%gobject-new (type-number-of object))
+       (%gobject-newvv (type-number-of object) (length names) names values)))
+    
+;    (map 'nil #'gvalue-free values)
+    )
+  
+  (%object-weak-ref object)
+  (apply #'call-next-method object initargs))
+
+
+(defmethod initialize-proxy ((object gobject) &rest initargs &key weak-ref)
+  (declare (ignore initargs))
+  (call-next-method)
+  (%object-weak-ref object)
+  (unless weak-ref
+    (object-ref object)))
+
+(def-callback weak-notify (void (data int) (location system-area-pointer))
+  (when (instance-cached-p location)
+    (warn "~A being finalized by the GObject system while still in existence in lisp" (find-cached-instance location))
+    (remove-cached-instance location)))
 
+(defbinding %object-weak-ref (object) nil
+  (object gobject)
+  ((callback weak-notify) pointer)
+  (0 unsigned-int))
 
-;;;; Object construction
 
-(define-foreign ("g_object_new" %gobject-new) () gobject
+(defbinding (%gobject-new "g_object_new") () pointer
   (type type-number)
   (nil null))
 
+(defbinding (%gobject-newvv "g_object_newvv") () pointer
+  (type type-number)
+  (n-parameters unsigned-int)
+  (names (vector string))
+  (values (vector gvalue)))
 
-;;;; Reference counting for gobject
-
-;; Specializing reference-instance and unreference-instance on gobject
-;; is not really necessary but done for efficiency
-
-(defmethod reference-instance ((object gobject))
-  (%object-ref object)
-  object)
 
-(defmethod unreference-instance ((object gobject))
-  (%object-unref object))
+(defbinding %object-ref (type location) pointer
+  (location pointer))
 
-(deftype-method alien-ref gobject (type-spec)
-  (declare (ignore type-spec))
-  '%object-ref)
+ (defbinding %object-unref (type location) nil
+   (location pointer))
 
-(deftype-method alien-unref gobject (type-spec)
-  (declare (ignore type-spec))
-  '%object-unref)
+(defun object-ref (object)
+  (%object-ref nil (proxy-location object)))
 
-(define-foreign %object-ref () pointer
-  (object (or gobject pointer)))
+(defun object-unref (object)
+  (%object-unref nil (proxy-location object)))
 
-(define-foreign %object-unref () nil
-  (object (or gobject pointer)))
 
 
-;;;; Parameter stuff
+;;;; Property stuff
 
-(define-foreign %object-set-property () nil
+(defbinding %object-set-property () nil
   (object gobject)
   (name string)
   (value gvalue))
 
-(define-foreign %object-get-property () nil
+(defbinding %object-get-property () nil
   (object gobject)
   (name string)
   (value gvalue))
 
-(define-foreign %object-notify () nil
+(defbinding %object-notify () nil
   (object gobject)
   (name string))
 
-(define-foreign object-freeze-notify () nil
+(defbinding object-freeze-notify () nil
   (object gobject))
 
-(define-foreign object-thaw-notify () nil
+(defbinding object-thaw-notify () nil
   (object gobject))
 
-(define-foreign %object-set-qdata-full () nil
+(defbinding %object-set-qdata-full () nil
   (object gobject)
   (id quark)
   (data unsigned-long)
@@ -95,10 +139,10 @@
 (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*)
+   (register-user-data data) (callback %destroy-user-data))
   data)
 
-(define-foreign %object-get-qdata () unsigned-long
+(defbinding %object-get-qdata () unsigned-long
   (object gobject)		 
   (id quark))
 
@@ -111,88 +155,216 @@
 ;;;; Metaclass used for subclasses of gobject
 
 (eval-when (:compile-toplevel :load-toplevel :execute)
-  (defclass gobject-class (ginstance-class))
-
-  (defclass direct-gobject-slot-definition (direct-virtual-slot-definition))
-
-  (defclass effective-gobject-slot-definition
-    (effective-virtual-slot-definition)))
-
-(defmethod allocate-alien-storage ((class gobject-class))
-  (alien-instance-location (%gobject-new (find-type-number 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))
+  (defclass gobject-class (ginstance-class)
+    ())
+
+  (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))))
 
 
-; (define-foreign object-class-install-param () nil
+
+; (defbinding object-class-install-param () nil
 ;   (class pointer)
 ;   (id unsigned-int)
 ;   (parameter parameter))
 
-; (define-foreign object-class-find-param-spec () parameter
+; (defbinding object-class-find-param-spec () parameter
 ;   (class pointer)
 ;   (name string))
 
+(defun signal-name-to-string (name)
+  (substitute #\_ #\- (string-downcase (string name))))
 
-(defmethod initialize-instance :after ((slotd direct-gobject-slot-definition)
-				       &rest initargs &key)
-  (declare (ignore initargs))
-  (unless (slot-boundp slotd 'location)
-    ;; Find parameter name from slot name
-    (with-slots (pcl::name location) slotd
-      (setf location (signal-name-to-string pcl::name)))))
 
-(defmethod direct-slot-definition-class ((class gobject-class) initargs)
+(defmethod direct-slot-definition-class ((class gobject-class) &rest initargs)
   (case (getf initargs :allocation)
-    (:param (find-class 'direct-gobject-slot-definition))
+    (:property (find-class 'direct-property-slot-definition))
     (t (call-next-method))))
 
-(defmethod effective-slot-definition-class ((class gobject-class) initargs)
+(defmethod effective-slot-definition-class ((class gobject-class) &rest initargs)
   (case (getf initargs :allocation)
-    (:param (find-class 'effective-gobject-slot-definition))
+    (:property (find-class 'effective-property-slot-definition))
     (t (call-next-method))))
 
-(defmethod compute-virtual-slot-location
-    ((class gobject-class) (slotd effective-gobject-slot-definition)
-     direct-slotds)
-  (with-slots (type) slotd
-    (let ((param-name (slot-definition-location (first direct-slotds)))
-	  (type-number (find-type-number type))
-	  (reader (get-reader-function type))
-	  (writer (get-writer-function type))
-	  (destroy (get-destroy-function type)))
-      (list
+(defmethod compute-effective-slot-definition-initargs ((class gobject-class) direct-slotds)
+  (if (eq (most-specific-slot-value direct-slotds 'allocation) :property)
+      (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)))
+    (unless (slot-boundp slotd 'reader-function)
+      (setf 
+       (slot-value slotd 'reader-function)
+       (if (slot-readable-p slotd)
+	   #'(lambda (object)
+	       (with-gc-disabled
+		   (let ((gvalue (gvalue-new type-number)))
+		     (%object-get-property object pname gvalue)
+		     (unwind-protect
+			  (funcall
+			   (intern-reader-function (type-from-number type-number)) gvalue +gvalue-value-offset+) ; temporary workaround for wrong topological sorting of types
+		       (gvalue-free gvalue t)))))
+	   #'(lambda (value object)
+	       (error "Slot is not readable: ~A" (slot-definition-name slotd))))))
+    
+    (unless (slot-boundp slotd 'writer-function)
+      (setf 
+       (slot-value slotd 'writer-function)
+       (if (slot-writable-p slotd)
+	   #'(lambda (value object)
+	       (with-gc-disabled
+		   (let ((gvalue (gvalue-new type-number)))
+		     (funcall
+		      (intern-writer-function (type-from-number type-number)) ; temporary
+		      value gvalue +gvalue-value-offset+)
+		     (%object-set-property object pname gvalue)
+		     (funcall
+		      (intern-destroy-function (type-from-number type-number)) ; temporary
+		      gvalue +gvalue-value-offset+)
+		     (gvalue-free gvalue nil)
+		     value)))
+ 	   #'(lambda (value object)
+ 	       (error "Slot is not writable: ~A" (slot-definition-name slotd))))))
+    
+    (unless (slot-boundp slotd 'boundp-function)
+      (setf 
+       (slot-value slotd 'boundp-function)
        #'(lambda (object)
-	   (with-gc-disabled
-	     (let ((gvalue (gvalue-new type-number)))
-	       (%object-get-property object param-name gvalue)
-	       (prog1
-		   (funcall reader gvalue +gvalue-value-offset+)
-		 (gvalue-free gvalue t)))))
-       #'(lambda (value object)
-	   (with-gc-disabled
-  	     (let ((gvalue (gvalue-new type-number)))
-	       (funcall writer value gvalue +gvalue-value-offset+)
-	       (%object-set-property object param-name gvalue)
-	       (funcall destroy gvalue +gvalue-value-offset+)
-	       (gvalue-free gvalue nil)
-	       value)))))))
+	   (declare (ignore object))
+	   t))))
+  (call-next-method))
 
 
 (defmethod validate-superclass ((class gobject-class)
 				(super pcl::standard-class))
-  (subtypep (class-name super) 'gobject))
+;  (subtypep (class-name super) 'gobject)
+  t)
+
+
+
+;;;;
+
+(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-array 'list #'identity params 'param length)
+    (let ((properties ()))
+      (map-c-array '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)
+  (with-slots (name flags value-type documentation) property
+    (let* ((slot-name (default-slot-name name))
+	   (slot-type (or (type-from-number value-type) value-type))
+	   (accessor (default-slot-accessor class slot-name slot-type)))
+      
+      `(,slot-name
+	:allocation :property :pname ,name
+	
+	;; 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 
+   with manual-slots = slots
+   for property in properties
+   unless (find-if 
+	   #'(lambda (slot)
+	       (destructuring-bind (name &rest args) slot
+		 (or 
+		  (equal (param-name property) (getf args :pname))
+		  (eq (default-slot-name (param-name property)) name))))
+	   manual-slots)
+   do (push (slot-definition-from-property class property) slots))
+  (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)