X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/clg/blobdiff_plain/13d35622e85876f34d62b22cfdf6f5d5e465c1de..4a64c16d900f59a4e6b1ac57fc8658f6faabbcfc:/glib/gtype.lisp diff --git a/glib/gtype.lisp b/glib/gtype.lisp index 8c43347..2498302 100644 --- a/glib/gtype.lisp +++ b/glib/gtype.lisp @@ -1,21 +1,26 @@ -;; Common Lisp bindings for GTK+ v2.0 -;; Copyright (C) 2000-2001 Espen S. Johnsen +;; Common Lisp bindings for GTK+ v2.x +;; Copyright 2000-2005 Espen S. Johnsen ;; -;; 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: gtype.lisp,v 1.30 2005-03-12 19:38:12 espen Exp $ +;; $Id: gtype.lisp,v 1.40 2006-02-06 11:52:24 espen Exp $ (in-package "GLIB") @@ -162,12 +167,18 @@ (defun find-type-number (type &optional error-p) (defun type-from-number (type-number &optional error) (multiple-value-bind (type found) (gethash type-number *type-number-to-lisp-type*) - (when (and error (not found)) + (if found + type (let ((name (find-foreign-type-name type-number))) - (if name - (error "Type number not registered: ~A (~A)" type-number name) - (error "Invalid type number: ~A" type-number)))) - type)) + (cond + ((and name (not (= (type-number-from-glib-name name nil) type-number))) + ;; This is a hack because GdkEvent seems to be registered + ;; multiple times + (type-from-number (type-number-from-glib-name name))) + ((and error name) + (error "Type number not registered: ~A (~A)" type-number name)) + ((and error) + (error "Invalid type number: ~A" type-number))))))) (defbinding (find-foreign-type-name "g_type_name") (type) (copy-of string) ((find-type-number type t) type-number)) @@ -229,27 +240,67 @@ (defun default-type-init-name (type) (substitute #\_ #\- (string-downcase type))))) +(eval-when (:compile-toplevel :load-toplevel :execute) + (defclass type-info (struct) + ((class-size :allocation :alien :type (unsigned 16) :initarg :class-size) + (base-init :allocation :alien :type pointer) + (base-finalize :allocation :alien :type pointer) + (class-init :allocation :alien :type pointer) + (class-finalize :allocation :alien :type pointer) + (class-data :allocation :alien :type pointer) + (instance-size :allocation :alien :type (unsigned 16) + :initarg :instance-size) + (n-preallocs :allocation :alien :type (unsigned 16)) + (instance-init :allocation :alien :type pointer) + (value-table :allocation :alien :type pointer)) + (:metaclass struct-class))) + +(defbinding %type-register-static () type-number + (parent-type type-number) + (name string) + (info type-info) + (0 unsigned-int)) + +(defun register-new-type (type parent &optional foreign-name) + (let ((parent-info (type-query parent))) + (with-slots ((parent-number type-number) class-size instance-size) parent-info + (let ((type-number + (%type-register-static + parent-number + (or foreign-name (default-alien-type-name type)) + (make-instance 'type-info :class-size class-size :instance-size instance-size)))) + (setf (gethash type *lisp-type-to-type-number*) type-number) + (setf (gethash type-number *type-number-to-lisp-type*) type) + type-number)))) + + ;;;; Metaclass for subclasses of ginstance (eval-when (:compile-toplevel :load-toplevel :execute) (defclass ginstance-class (proxy-class) - ())) + ((gtype :initarg :gtype :initform nil :reader ginstance-class-gtype)))) -(defmethod shared-initialize ((class ginstance-class) names &rest initargs &key name gtype) - (declare (ignore names)) - (let* ((class-name (or name (class-name class))) - (type-number +(defmethod compute-foreign-size ((class ginstance-class)) + (type-instance-size (find-type-number (class-name class)))) + +(defmethod finalize-inheritance ((class ginstance-class)) + (call-next-method) + (let* ((class-name (class-name class)) + (super (most-specific-proxy-superclass class)) + (gtype (or + (first (ginstance-class-gtype class)) + (default-alien-type-name class-name))) + (type-number (or (find-type-number class-name) - (register-type class-name - (or (first gtype) (default-type-init-name class-name)))))) - (if (getf initargs :size) - (call-next-method) - (let ((size (type-instance-size type-number))) - (apply #'call-next-method class names :size (list size) initargs))))) - + (if (or (symbolp gtype) (type-number-from-glib-name gtype nil)) + (register-type class-name gtype) + (register-new-type class-name (class-name super) gtype))))) + (unless (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)))) (defmethod validate-superclass ((class ginstance-class) (super standard-class)) (subtypep (class-name super) 'ginstance)) @@ -259,14 +310,16 @@ (defmethod validate-superclass ((class ginstance-class) (super standard-class)) (eval-when (:compile-toplevel :load-toplevel :execute) (defclass ginstance (proxy) - ((class :allocation :alien :type pointer)) - (:metaclass proxy-class))) + (;(class :allocation :alien :type pointer :offset 0) + ) + (:metaclass proxy-class) + (:size #.(size-of 'pointer)))) (defun %type-number-of-ginstance (location) (let ((class (sap-ref-sap location 0))) (sap-ref-32 class 0))) -(defmethod ensure-proxy-instance ((class ginstance-class) location) +(defmethod make-proxy-instance :around ((class ginstance-class) location &rest initargs) (declare (ignore class)) (let ((class (labels ((find-known-class (type-number) (or @@ -274,10 +327,26 @@ (defmethod ensure-proxy-instance ((class ginstance-class) location) (unless (zerop type-number) (find-known-class (type-parent type-number)))))) (find-known-class (%type-number-of-ginstance location))))) + ;; Note that chancing the class argument must not alter "the + ;; ordered set of applicable methods" as specified in the + ;; Hyperspec (if class - (make-instance class :location (reference-foreign class location)) - (error "Object at ~A has an unkown type number: ~A" - location (%type-number-of-ginstance location))))) + (apply #'call-next-method class location initargs) + (error "Object at ~A has an unkown type number: ~A" + location (%type-number-of-ginstance location))))) + +(defmethod make-proxy-instance ((class ginstance-class) location &rest initargs) + (declare (ignore initargs)) + (reference-foreign class location) + ;; Since we make an explicit reference to the foreign object, we + ;; always have to release it when the proxy is garbage collected + ;; and therefor ignore the weak-p argument. + (call-next-method class location :weak nil)) + +(defmethod invalidate-instance ((instance ginstance)) + (declare (ignore instance)) + ;; A ginstance should never be invalidated since it is ref counted + nil) (defmethod copy-from-alien-form (location (class ginstance-class) &rest args) (declare (ignore location class args)) @@ -301,6 +370,7 @@ (register-type 'char "gchar") (register-type 'unsigned-char "guchar") (register-type 'boolean "gboolean") (register-type 'int "gint") +(register-type-alias 'integer 'int) (register-type-alias 'fixnum 'int) (register-type 'unsigned-int "guint") (register-type 'long "glong")