1 ;; Common Lisp bindings for GTK+ v1.2.x
2 ;; Copyright (C) 1999 Espen S. Johnsen <espejohn@online.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: glib.lisp,v 1.15 2004-11-01 00:08:49 espen Exp $
26 ;;;; Memory management
28 (defbinding (allocate-memory "g_malloc0") () pointer
31 (defbinding (reallocate-memory "g_realloc") () pointer
35 (defbinding (deallocate-memory "g_free") () nil
37 ;(defun deallocate-memory (address)
38 ; (declare (ignore address)))
40 (defun copy-memory (from length &optional (to (allocate-memory length)))
41 (kernel:system-area-copy from 0 to 0 (* 8 length))
45 ;;;; User data mechanism
47 (internal *user-data* *user-data-count*)
49 (declaim (fixnum *user-data-count*))
51 (defvar *user-data* (make-hash-table))
52 (defvar *user-data-count* 0)
54 (defun register-user-data (object &optional destroy-function)
55 (check-type destroy-function (or null symbol function))
56 (incf *user-data-count*)
58 (gethash *user-data-count* *user-data*)
59 (cons object destroy-function))
62 (defun find-user-data (id)
63 (check-type id fixnum)
64 (multiple-value-bind (user-data p) (gethash id *user-data*)
65 (values (car user-data) p)))
67 (defun destroy-user-data (id)
68 (check-type id fixnum)
69 (let ((user-data (gethash id *user-data*)))
71 (funcall (cdr user-data) (car user-data))))
72 (remhash id *user-data*))
78 (internal *quark-counter* *quark-from-object* *quark-to-object*)
80 (deftype quark () 'unsigned)
82 ;(defbinding %quark-get-reserved () quark)
84 (defbinding %quark-from-string () quark
87 (defvar *quark-counter* 0)
89 (defun %quark-get-reserved ()
90 ;; The string is just a dummy
91 (%quark-from-string (format nil "#@£$%&-quark-~D" (incf *quark-counter*))))
93 (defvar *quark-from-object* (make-hash-table))
94 (defvar *quark-to-object* (make-hash-table))
96 (defun quark-from-object (object &key (test #'eq))
97 (let ((hash-code (sxhash object)))
99 (assoc-ref object (gethash hash-code *quark-from-object*) :test test)
100 (let ((quark (%quark-get-reserved)))
102 (gethash hash-code *quark-from-object*)
104 (gethash hash-code *quark-from-object*)
105 (list (cons object quark))))
106 (setf (gethash quark *quark-to-object*) object)
109 (defun quark-to-object (quark)
110 (gethash quark *quark-to-object*))
112 (defun remove-quark (quark)
113 (let* ((object (gethash quark *quark-to-object*))
114 (hash-code (sxhash object)))
115 (remhash quark *quark-to-object*)
117 (gethash hash-code *quark-from-object*)
118 (assoc-delete object (gethash hash-code *quark-from-object*)))
119 (remhash hash-code *quark-from-object*))))
123 ;;;; Linked list (GList)
125 (deftype glist (type) `(or (null (cons ,type list))))
127 (defbinding (%glist-append-unsigned "g_list_append") () pointer
131 (defbinding (%glist-append-signed "g_list_append") () pointer
135 (defbinding (%glist-append-sap "g_list_append") () pointer
139 (defmacro glist-append (glist value type-spec)
140 (ecase (first (mklist (translate-type-spec type-spec)))
141 (unsigned `(%glist-append-unsigned ,glist ,value))
142 (signed `(%glist-append-signed ,glist ,value))
143 (system-area-pointer `(%glist-append-sap ,glist ,value))))
145 (defmacro glist-data (glist type-spec)
146 (ecase (first (mklist (translate-type-spec type-spec)))
147 (unsigned `(sap-ref-unsigned ,glist 0))
148 (signed `(sap-ref-signed ,glist 0))
149 (system-area-pointer `(sap-ref-sap ,glist 0))))
151 (defun glist-next (glist)
152 (unless (null-pointer-p glist)
153 (sap-ref-sap glist +size-of-sap+)))
155 (defbinding (glist-free "g_list_free") () nil
158 (deftype-method translate-type-spec glist (type-spec)
159 (declare (ignore type-spec))
160 (translate-type-spec 'pointer))
162 (deftype-method size-of glist (type-spec)
163 (declare (ignore type-spec))
166 (deftype-method translate-to-alien glist (type-spec list &optional weak-ref)
167 (declare (ignore weak-ref))
168 (let* ((element-type (second (type-expand-to 'glist type-spec)))
169 (element (translate-to-alien element-type 'element)))
170 `(let ((glist (make-pointer 0)))
171 (dolist (element ,list glist)
172 (setq glist (glist-append glist ,element ,element-type))))))
174 (deftype-method translate-from-alien
175 glist (type-spec glist &optional weak-ref)
176 (let ((element-type (second (type-expand-to 'glist type-spec))))
177 `(let ((glist ,glist)
179 (do ((tmp glist (glist-next tmp)))
180 ((null-pointer-p tmp))
182 ,(translate-from-alien
183 element-type `(glist-data tmp ,element-type) weak-ref)
189 (deftype-method cleanup-alien glist (type-spec glist &optional weak-ref)
191 (unreference-alien type-spec glist)))
193 (deftype-method unreference-alien glist (type-spec glist)
194 (let ((element-type (second (type-expand-to 'glist type-spec))))
195 `(let ((glist ,glist))
196 (unless (null-pointer-p glist)
197 ,(unless (atomic-type-p element-type)
198 `(do ((tmp glist (glist-next tmp)))
199 ((null-pointer-p tmp))
201 element-type `(glist-data tmp ,element-type))))
202 (glist-free glist)))))
205 ;;;; Single linked list (GSList)
207 (deftype gslist (type) `(or (null (cons ,type list))))
209 (defbinding (%gslist-prepend-unsigned "g_slist_prepend") () pointer
213 (defbinding (%gslist-prepend-signed "g_slist_prepend") () pointer
217 (defbinding (%gslist-prepend-sap "g_slist_prepend") () pointer
221 (defmacro gslist-prepend (gslist value type-spec)
222 (ecase (first (mklist (translate-type-spec type-spec)))
223 (unsigned `(%gslist-prepend-unsigned ,gslist ,value))
224 (signed `(%gslist-prepend-signed ,gslist ,value))
225 (system-area-pointer `(%gslist-prepend-sap ,gslist ,value))))
227 (defbinding (gslist-free "g_slist_free") () nil
230 (deftype-method translate-type-spec gslist (type-spec)
231 (declare (ignore type-spec))
232 (translate-type-spec 'pointer))
234 (deftype-method size-of gslist (type-spec)
235 (declare (ignore type-spec))
238 (deftype-method translate-to-alien gslist (type-spec list &optional weak-ref)
239 (declare (ignore weak-ref))
240 (let* ((element-type (second (type-expand-to 'gslist type-spec)))
241 (element (translate-to-alien element-type 'element)))
242 `(let ((gslist (make-pointer 0)))
243 (dolist (element (reverse ,list) gslist)
244 (setq gslist (gslist-prepend gslist ,element ,element-type))))))
246 (deftype-method translate-from-alien
247 gslist (type-spec gslist &optional weak-ref)
248 (let ((element-type (second (type-expand-to 'gslist type-spec))))
249 `(let ((gslist ,gslist)
251 (do ((tmp gslist (glist-next tmp)))
252 ((null-pointer-p tmp))
254 ,(translate-from-alien
255 element-type `(glist-data tmp ,element-type) weak-ref)
258 '(gslist-free gslist))
261 (deftype-method cleanup-alien gslist (type-spec gslist &optional weak-ref)
263 (unreference-alien type-spec gslist)))
265 (deftype-method unreference-alien gslist (type-spec gslist)
266 (let ((element-type (second (type-expand-to 'gslist type-spec))))
267 `(let ((gslist ,gslist))
268 (unless (null-pointer-p gslist)
269 ,(unless (atomic-type-p element-type)
270 `(do ((tmp gslist (glist-next tmp)))
271 ((null-pointer-p tmp))
273 element-type `(glist-data tmp ,element-type))))
274 (gslist-free gslist)))))
280 (defvar *magic-end-of-array* (allocate-memory 1))
282 (deftype-method translate-type-spec vector (type-spec)
283 (declare (ignore type-spec))
284 (translate-type-spec 'pointer))
286 (deftype-method size-of vector (type-spec)
287 (declare (ignore type-spec))
290 (deftype-method translate-to-alien vector (type-spec vector &optional weak-ref)
291 (declare (ignore weak-ref))
292 (destructuring-bind (element-type &optional (length '*))
293 (cdr (type-expand-to 'vector type-spec))
294 (let* ((element-size (size-of element-type))
296 ((not (eq length '*))
297 (* element-size length))
298 ((not (atomic-type-p element-type))
299 `(* ,element-size (1+ (length vector))))
301 `(* ,element-size (length vector))))))
303 `(let ((vector ,vector))
304 (let ((c-vector (allocate-memory ,size)))
305 (dotimes (i ,(if (eq length '*) '(length vector) length))
307 (,(sap-ref-fname element-type) c-vector (* i ,element-size))
308 ,(translate-to-alien element-type '(aref vector i))))
311 (not (atomic-type-p element-type)))
313 (sap-ref-sap c-vector (* (length vector) ,element-size))
314 *magic-end-of-array*))
317 (deftype-method translate-from-alien
318 vector (type-spec c-array &optional weak-ref)
319 (destructuring-bind (element-type &optional (length '*))
320 (cdr (type-expand-to 'vector type-spec))
322 (error "Can't use vectors of variable length as return type"))
323 (let ((element-size (size-of element-type)))
324 `(let ((c-array ,c-array)
325 (vector (make-array ,length :element-type ',element-type)))
329 ,(translate-from-alien
331 `(,(sap-ref-fname element-type) c-array (* i ,element-size))
334 '(deallocate-memory c-vector))
338 (deftype-method cleanup-alien vector (type-spec c-vector &optional weak-ref)
340 (unreference-alien type-spec c-vector)))
342 (deftype-method unreference-alien vector (type-spec c-vector)
343 (destructuring-bind (element-type &optional (length '*))
344 (cdr (type-expand-to 'vector type-spec))
345 `(let ((c-vector ,c-vector))
346 (unless (null-pointer-p c-vector)
347 ,(unless (atomic-type-p element-type)
348 (let ((element-size (size-of element-type)))
349 (if (not (eq length '*))
350 `(dotimes (i ,length)
352 element-type (sap-ref-sap c-vector (* i ,element-size))))
353 `(do ((offset 0 (+ offset ,element-size)))
355 (sap-ref-sap c-vector offset)
356 *magic-end-of-array*))
358 element-type '(sap-ref-sap c-vector offset))))))
359 (deallocate-memory c-vector)))))
362 (defun map-c-array (seqtype function location element-type length)
363 (let ((reader (intern-reader-function element-type))
364 (size (size-of element-type)))
368 (funcall function (funcall reader location (* i size)))))
372 (push (funcall function (funcall reader location (* i size))) list))
375 (let ((sequence (make-sequence seqtype length)))
379 (funcall function (funcall reader location (* i size)))))