1 ;; Common Lisp bindings for GTK+ v2.0
2 ;; Copyright (C) 2000-2001 Espen S. Johnsen <esj@stud.cs.uit.no>
4 ;; This library is free software; you can redistribute it and/or
5 ;; modify it under the terms of the GNU Lesser General Public
6 ;; License as published by the Free Software Foundation; either
7 ;; version 2 of the License, or (at your option) any later version.
9 ;; This library is distributed in the hope that it will be useful,
10 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
11 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 ;; Lesser General Public License for more details.
14 ;; You should have received a copy of the GNU Lesser General Public
15 ;; License along with this library; if not, write to the Free Software
16 ;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 ;; $Id: gtype.lisp,v 1.30 2005/03/12 19:38:12 espen Exp $
24 ;; Initialize the glib type system
25 (defbinding type-init () nil)
28 (deftype type-number () '(unsigned 32))
30 (deftype gtype () 'symbol)
32 (defmethod alien-type ((type (eql 'gtype)) &rest args)
33 (declare (ignore type args))
34 (alien-type 'type-number))
36 (defmethod size-of ((type (eql 'gtype)) &rest args)
37 (declare (ignore type args))
38 (size-of 'type-number))
40 (defmethod to-alien-form (gtype (type (eql 'gtype)) &rest args)
41 (declare (ignore type args))
42 `(find-type-number ,gtype t))
44 (defmethod to-alien-function ((type (eql 'gtype)) &rest args)
45 (declare (ignore type args))
47 (find-type-number gtype t)))
49 (defmethod from-alien-form (type-number (type (eql 'gtype)) &rest args)
50 (declare (ignore type args))
51 `(type-from-number ,type-number))
53 (defmethod from-alien-function ((type (eql 'gtype)) &rest args)
54 (declare (ignore type args))
55 #'(lambda (type-number)
56 (type-from-number type-number)))
58 (defmethod writer-function ((type (eql 'gtype)) &rest args)
59 (declare (ignore type args))
60 (let ((writer (writer-function 'type-number)))
61 #'(lambda (gtype location &optional (offset 0))
62 (funcall writer (find-type-number gtype t) location offset))))
64 (defmethod reader-function ((type (eql 'gtype)) &rest args)
65 (declare (ignore type args))
66 (let ((reader (reader-function 'type-number)))
67 #'(lambda (location &optional (offset 0))
68 (type-from-number (funcall reader location offset)))))
71 (eval-when (:compile-toplevel :load-toplevel :execute)
72 (defclass type-query (struct)
73 ((type-number :allocation :alien :type type-number)
74 (name :allocation :alien :type string)
75 (class-size :allocation :alien :type unsigned-int)
76 (instance-size :allocation :alien :type unsigned-int))
77 (:metaclass struct-class)))
80 (defbinding type-query (type) nil
81 ((find-type-number type t) type-number)
82 ((make-instance 'type-query) type-query :return))
84 (defun type-instance-size (type)
85 (slot-value (type-query type) 'instance-size))
87 (defun type-class-size (type)
88 (slot-value (type-query type) 'class-size))
90 (defbinding type-class-ref (type) pointer
91 ((find-type-number type t) type-number))
93 (defbinding type-class-unref (type) nil
94 ((find-type-number type t) type-number))
96 (defbinding type-class-peek (type) pointer
97 ((find-type-number type t) type-number))
100 ;;;; Mapping between lisp types and glib types
102 (defvar *registered-types* ())
103 (defvar *registered-type-aliases* ())
104 (defvar *lisp-type-to-type-number* (make-hash-table))
105 (defvar *type-number-to-lisp-type* (make-hash-table))
107 (defbinding %type-from-name () type-number
110 (defun type-number-from-glib-name (name &optional (error-p t))
111 (let ((type-number (%type-from-name name)))
113 ((not (zerop type-number)) type-number)
114 (error-p (error "Invalid gtype name: ~A" name)))))
116 (defun register-type (type id)
117 (pushnew (cons type id) *registered-types* :key #'car)
120 (string (type-number-from-glib-name id))
121 (symbol (funcall id)))))
122 (setf (gethash type *lisp-type-to-type-number*) type-number)
123 (setf (gethash type-number *type-number-to-lisp-type*) type)
126 (defun register-type-alias (type alias)
127 (pushnew (cons type alias) *registered-type-aliases* :key #'car)
129 (gethash type *lisp-type-to-type-number*)
130 (find-type-number alias t)))
132 (defun reinitialize-all-types ()
133 (clrhash *lisp-type-to-type-number*)
134 (clrhash *type-number-to-lisp-type*)
135 (type-init) ; initialize the glib type system
136 (mapc #'(lambda (type)
137 (register-type (car type) (cdr type)))
139 (mapc #'(lambda (type)
140 (register-type-alias (car type) (cdr type)))
141 *registered-type-aliases*))
143 (pushnew 'reinitialize-all-types
144 #+cmu *after-save-initializations*
148 (pushnew 'system::reinitialize-global-table ; we shouldn't have to do this?
149 *after-save-initializations*)
152 (defun find-type-number (type &optional error-p)
155 (string (type-number-from-glib-name type error-p))
158 (gethash type *lisp-type-to-type-number*)
159 (and error-p (error "Type not registered: ~A" type))))
160 (class (find-type-number (class-name type) error-p))))
162 (defun type-from-number (type-number &optional error)
163 (multiple-value-bind (type found)
164 (gethash type-number *type-number-to-lisp-type*)
165 (when (and error (not found))
166 (let ((name (find-foreign-type-name type-number)))
168 (error "Type number not registered: ~A (~A)" type-number name)
169 (error "Invalid type number: ~A" type-number))))
172 (defbinding (find-foreign-type-name "g_type_name") (type) (copy-of string)
173 ((find-type-number type t) type-number))
175 (defun type-number-of (object)
176 (find-type-number (type-of object) t))
178 (eval-when (:compile-toplevel :load-toplevel :execute)
179 (defvar *type-initializers* ())
180 (defun %find-types-in-library (pathname prefixes ignore)
181 (let ((process (run-program
182 "/usr/bin/nm" (list "--defined-only" "-D" (namestring (truename pathname)))
183 :output :stream :wait nil)))
186 as symbol = (let ((line (read-line (process-output process) nil)))
187 (when line (subseq line 11)))
190 (> (length symbol) 9)
193 (some #'(lambda (prefix)
195 (> (length symbol) (length prefix))
196 (string= prefix symbol :end2 (length prefix))))
198 (string= "_get_type" symbol :start2 (- (length symbol) 9))
199 (not (member symbol ignore :test #'string=)))
201 (process-close process)))))
204 (defmacro init-types-in-library (filename &key prefix ignore)
205 (let ((names (%find-types-in-library filename prefix ignore)))
207 ,@(mapcar #'(lambda (name)
209 (defbinding (,(intern name) ,name) () type-number)
211 (pushnew ',(intern name) *type-initializers*)))
214 (defun find-type-init-function (type-number)
216 for type-init in *type-initializers*
217 when (= type-number (funcall type-init))
218 do (return type-init)))
220 (defun register-type-as (type-number)
222 (find-type-init-function type-number)
223 (find-foreign-type-name type-number)
224 (error "Unknown type-number: ~A" type-number)))
226 (defun default-type-init-name (type)
227 (find-symbol (format nil "~A_~A_get_type"
228 (package-prefix *package*)
229 (substitute #\_ #\- (string-downcase type)))))
233 ;;;; Metaclass for subclasses of ginstance
235 (eval-when (:compile-toplevel :load-toplevel :execute)
236 (defclass ginstance-class (proxy-class)
240 (defmethod shared-initialize ((class ginstance-class) names &rest initargs &key name gtype)
241 (declare (ignore names))
242 (let* ((class-name (or name (class-name class)))
245 (find-type-number class-name)
246 (register-type class-name
247 (or (first gtype) (default-type-init-name class-name))))))
248 (if (getf initargs :size)
250 (let ((size (type-instance-size type-number)))
251 (apply #'call-next-method class names :size (list size) initargs)))))
254 (defmethod validate-superclass ((class ginstance-class) (super standard-class))
255 (subtypep (class-name super) 'ginstance))
258 ;;;; Superclass for wrapping types in the glib type system
260 (eval-when (:compile-toplevel :load-toplevel :execute)
261 (defclass ginstance (proxy)
262 ((class :allocation :alien :type pointer))
263 (:metaclass proxy-class)))
265 (defun %type-number-of-ginstance (location)
266 (let ((class (sap-ref-sap location 0)))
267 (sap-ref-32 class 0)))
269 (defmethod ensure-proxy-instance ((class ginstance-class) location)
270 (declare (ignore class))
271 (let ((class (labels ((find-known-class (type-number)
273 (find-class (type-from-number type-number) nil)
274 (unless (zerop type-number)
275 (find-known-class (type-parent type-number))))))
276 (find-known-class (%type-number-of-ginstance location)))))
278 (make-instance class :location (reference-foreign class location))
279 (error "Object at ~A has an unkown type number: ~A"
280 location (%type-number-of-ginstance location)))))
282 (defmethod copy-from-alien-form (location (class ginstance-class) &rest args)
283 (declare (ignore location class args))
284 (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."))
286 (defmethod copy-from-alien-function ((class ginstance-class) &rest args)
287 (declare (ignore class args))
288 (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."))
290 (defmethod reader-function ((class ginstance-class) &rest args)
291 (declare (ignore args))
292 #'(lambda (location &optional (offset 0))
293 (ensure-proxy-instance class (sap-ref-sap location offset))))
296 ;;;; Registering fundamental types
298 (register-type 'nil "void")
299 (register-type 'pointer "gpointer")
300 (register-type 'char "gchar")
301 (register-type 'unsigned-char "guchar")
302 (register-type 'boolean "gboolean")
303 (register-type 'int "gint")
304 (register-type-alias 'fixnum 'int)
305 (register-type 'unsigned-int "guint")
306 (register-type 'long "glong")
307 (register-type 'unsigned-long "gulong")
308 (register-type 'single-float "gfloat")
309 (register-type 'double-float "gdouble")
310 (register-type 'pathname "gchararray")
311 (register-type 'string "gchararray")
314 ;;;; Introspection of type information
316 (defvar *derivable-type-info* (make-hash-table))
318 (defun register-derivable-type (type id expander &optional dependencies)
319 (register-type type id)
320 (let ((type-number (register-type type id)))
322 (gethash type-number *derivable-type-info*)
323 (list expander dependencies))))
325 (defun find-type-info (type)
326 (dolist (super (cdr (type-hierarchy type)))
327 (let ((info (gethash super *derivable-type-info*)))
330 (defun expand-type-definition (type forward-p options)
331 (let ((expander (first (find-type-info type))))
332 (funcall expander (find-type-number type t) forward-p options)))
334 (defbinding type-parent (type) type-number
335 ((find-type-number type t) type-number))
337 (defun supertype (type)
338 (type-from-number (type-parent type)))
340 (defbinding %type-interfaces (type) pointer
341 ((find-type-number type t) type-number)
342 (n-interfaces unsigned-int :out))
344 (defun type-interfaces (type)
345 (multiple-value-bind (array length) (%type-interfaces type)
347 (map-c-vector 'list #'identity array 'type-number length)
348 (deallocate-memory array))))
350 (defun implements (type)
351 (mapcar #'type-from-number (type-interfaces type)))
353 (defun type-hierarchy (type)
354 (let ((type-number (find-type-number type t)))
355 (unless (= type-number 0)
356 (cons type-number (type-hierarchy (type-parent type-number))))))
358 (defbinding (type-is-p "g_type_is_a") (type super) boolean
359 ((find-type-number type) type-number)
360 ((find-type-number super) type-number))
362 (defbinding %type-children () pointer
363 (type-number type-number)
364 (num-children unsigned-int :out))
366 (defun map-subtypes (function type &optional prefix)
367 (let ((type-number (find-type-number type t)))
368 (multiple-value-bind (array length) (%type-children type-number)
372 #'(lambda (type-number)
375 (string-prefix-p prefix (find-foreign-type-name type-number)))
376 (funcall function type-number))
377 (map-subtypes function type-number prefix))
378 array 'type-number length)
379 (deallocate-memory array)))))
381 (defun find-types (prefix)
382 (let ((type-list nil))
384 #'(lambda (type-number expander)
385 (declare (ignore expander))
387 #'(lambda (type-number)
388 (pushnew type-number type-list))
390 *derivable-type-info*)
393 (defun find-type-dependencies (type)
394 (let ((list-dependencies (second (find-type-info type))))
395 (when list-dependencies
396 (funcall list-dependencies (find-type-number type t)))))
398 (defun %sort-types-topologicaly (types)
399 (let ((partial-sorted
403 (cons type (remove-if #'(lambda (dep)
404 (not (find dep types)))
405 (find-type-dependencies type))))
407 #'(lambda (type1 type2) (type-is-p type2 type1)) :key #'car))
411 as tmp = partial-sorted then (or (rest tmp) partial-sorted)
413 do (destructuring-bind (type . dependencies) (first tmp)
415 ((every #'(lambda (dep)
418 (push (cons type nil) sorted) ; no forward definition needed
419 (setq partial-sorted (delete type partial-sorted :key #'first)))
420 ((some #'(lambda (dep)
421 (find type (find-type-dependencies dep)))
423 (push (cons type t) sorted) ; forward definition needed
424 (setq partial-sorted (delete type partial-sorted :key #'first))))))
428 (defun expand-type-definitions (prefix &optional args)
429 (flet ((type-options (type-number)
430 (let ((name (find-foreign-type-name type-number)))
431 (cdr (assoc name args :test #'string=)))))
435 #'(lambda (type-number)
436 (let ((name (find-foreign-type-name type-number)))
438 (getf (type-options type-number) :ignore)
442 (string-prefix-p (first options) name)
443 (getf (cdr options) :ignore-prefix)
445 #'(lambda (exception)
446 (string= name exception))
447 (getf (cdr options) :except)))))
449 (find-types prefix))))
451 (dolist (type-number type-list)
452 (let ((name (find-foreign-type-name type-number)))
454 (getf (type-options type-number) :type (default-type-name name))
455 (register-type-as type-number))))
457 (let ((sorted-type-list (%sort-types-topologicaly type-list)))
461 (destructuring-bind (type . forward-p) pair
462 (expand-type-definition type forward-p (type-options type))))
466 (destructuring-bind (type . forward-p) pair
468 (expand-type-definition type nil (type-options type)))))
469 sorted-type-list))))))
471 (defmacro define-types-by-introspection (prefix &rest args)
472 (expand-type-definitions prefix args))
475 ;;;; Initialize all non static types in GObject
477 (init-types-in-library #.(concatenate 'string (pkg-config:pkg-variable "glib-2.0" "libdir") "/libgobject-2.0.so"))