Added new type methods for handling of C callback arguments

[clg] / glib / gtype.lisp

diff --git a/glib/gtype.lisp b/glib/gtype.lisp
index 0637c0b..88fddcc 100644 (file)
--- a/glib/gtype.lisp
+++ b/glib/gtype.lisp
@@ -20,7 +20,7 @@
 ;; TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 ;; SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-;; $Id: gtype.lisp,v 1.42 2006-02-06 22:58:35 espen Exp $
+;; $Id: gtype.lisp,v 1.44 2006-02-19 19:23:23 espen Exp $
 
 (in-package "GLIB")
 
@@ -283,8 +283,16 @@
     ((gtype :initarg :gtype :initform nil :reader ginstance-class-gtype))))
 
 
-(defmethod compute-foreign-size ((class ginstance-class))
-  (type-instance-size (find-type-number (class-name class))))
+(defun update-size (class)
+  (let ((type-number (find-type-number class)))
+    (cond
+     ((not (slot-boundp class 'size))
+      (setf (slot-value class 'size) (type-instance-size type-number)))
+     ((and 
+       (slot-boundp class 'size) 
+       (not (= (type-instance-size type-number) (slot-value class 'size))))
+      (warn "Size mismatch for class ~A" class)))))
+
 
 (defmethod finalize-inheritance ((class ginstance-class))
   (call-next-method)
@@ -308,7 +316,17 @@
           (supertype type-number) 
           (not (eq (class-name super) (supertype type-number))))
       (warn "~A is the super type for ~A in the gobject type system."
-       (supertype type-number) class-name))))
+       (supertype type-number) class-name)))
+  
+  (update-size class))
+
+
+(defmethod shared-initialize ((class ginstance-class) names &rest initargs)
+  (declare (ignore initargs))
+  (call-next-method)
+  (when (class-finalized-p class)
+    (update-size class)))
+
 
 (defmethod validate-superclass ((class ginstance-class) (super standard-class))
   (subtypep (class-name super) 'ginstance))
@@ -356,6 +374,9 @@
   ;; A ginstance should never be invalidated since it is ref counted
   nil)
 
+(defmethod callback-from-alien-form (form (type t) &rest args)
+  (apply #'from-alien-form form type args))
+
 (defmethod copy-from-alien-form (location (class ginstance-class) &rest args)
   (declare (ignore location class args))
   (error "Doing copy-from-alien on a ref. counted class is most certainly an error, but if it really is what you want you should use REFERENCE-FOREIGN on the returned instance instead."))