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1 | ;; Common Lisp bindings for GTK+ v1.2.x |
2 | ;; Copyright (C) 1999 Espen S. Johnsen <espejohn@online.no> |
3 | ;; |
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. |
8 | ;; |
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. |
13 | ;; |
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 |
17 | |
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18 | ;; $Id: glib.lisp,v 1.7 2000/10/05 17:17:41 espen Exp $ |
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19 | |
20 | |
21 | (in-package "GLIB") |
22 | (use-prefix "g") |
23 | |
24 | |
25 | ;;;; Memory management |
26 | |
27 | (define-foreign ("g_malloc0" allocate-memory) () pointer |
28 | (size unsigned-long)) |
29 | |
30 | (define-foreign ("g_realloc" reallocate-memory) () pointer |
31 | (address pointer) |
32 | (size unsigned-long)) |
33 | |
34 | (define-foreign ("g_free" deallocate-memory) () nil |
35 | (address pointer)) |
36 | |
37 | (defun copy-memory (from length &optional (to (allocate-memory length))) |
38 | (kernel:system-area-copy from 0 to 0 (* 8 length)) |
39 | to) |
40 | |
41 | |
42 | |
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43 | ;;;; Quarks |
44 | |
45 | (deftype quark () 'unsigned) |
46 | |
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47 | ;(define-foreign %quark-get-reserved () quark) |
48 | |
49 | (define-foreign %quark-from-string () quark |
50 | (string string)) |
51 | |
52 | (defvar *string-counter* 0) |
53 | |
54 | (defun %quark-get-reserved () |
55 | (%quark-from-string (format nil "CLG-~D" (incf *string-counter*)))) |
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56 | |
57 | (defvar *quark-from-object* (make-hash-table)) |
58 | (defvar *quark-to-object* (make-hash-table)) |
59 | |
60 | (defun quark-from-object (object &key (test #'eq)) |
61 | (let ((hash-code (sxhash object))) |
62 | (or |
63 | (assoc-ref object (gethash hash-code *quark-from-object*) :test test) |
64 | (let ((quark (%quark-get-reserved))) |
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65 | (setf |
66 | (gethash hash-code *quark-from-object*) |
67 | (append |
68 | (gethash hash-code *quark-from-object*) |
69 | (list (cons object quark)))) |
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70 | (setf (gethash quark *quark-to-object*) object) |
71 | quark)))) |
72 | |
73 | (defun quark-to-object (quark) |
74 | (gethash quark *quark-to-object*)) |
75 | |
76 | (defun remove-quark (quark) |
77 | (let* ((object (gethash quark *quark-to-object*)) |
78 | (hash-code (sxhash object))) |
79 | (remhash quark *quark-to-object*) |
80 | (unless (setf |
81 | (gethash hash-code *quark-from-object*) |
82 | (assoc-delete object (gethash hash-code *quark-from-object*))) |
83 | (remhash hash-code *quark-from-object*)))) |
84 | |
85 | |
86 | |
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87 | ;;;; Linked list (GList) |
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88 | |
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89 | (deftype glist (type) `(or (null (cons ,type list)))) |
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90 | |
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91 | (define-foreign ("g_list_append" %glist-append-unsigned) () pointer |
92 | (glist pointer) |
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93 | (data unsigned)) |
94 | |
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95 | (define-foreign ("g_list_append" %glist-append-signed) () pointer |
96 | (glist pointer) |
97 | (data signed)) |
98 | |
99 | (define-foreign ("g_list_append" %glist-append-sap) () pointer |
100 | (glist pointer) |
101 | (data pointer)) |
102 | |
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103 | (defmacro glist-append (glist value type-spec) |
104 | (ecase (first (mklist (translate-type-spec type-spec))) |
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105 | (unsigned `(%glist-append-unsigned ,glist ,value)) |
106 | (signed `(%glist-append-signed ,glist ,value)) |
107 | (system-area-pointer `(%glist-append-sap ,glist ,value)))) |
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108 | |
109 | (defmacro glist-data (glist type-spec) |
110 | (ecase (first (mklist (translate-type-spec type-spec))) |
111 | (unsigned `(sap-ref-unsigned ,glist 0)) |
112 | (signed `(sap-ref-signed ,glist 0)) |
113 | (system-area-pointer `(sap-ref-sap ,glist 0)))) |
114 | |
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115 | (defun glist-next (glist) |
116 | (unless (null-pointer-p glist) |
117 | (sap-ref-sap glist +size-of-sap+))) |
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118 | |
119 | (define-foreign ("g_list_free" glist-free) () nil |
120 | (glist pointer)) |
121 | |
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122 | (deftype-method translate-type-spec glist (type-spec) |
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123 | (declare (ignore type-spec)) |
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124 | (translate-type-spec 'pointer)) |
125 | |
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126 | (deftype-method size-of glist (type-spec) |
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127 | (declare (ignore type-spec)) |
128 | (size-of 'pointer)) |
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129 | |
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130 | (deftype-method translate-to-alien glist (type-spec list &optional copy) |
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131 | (declare (ignore copy)) |
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132 | (let* ((element-type-spec (second (type-expand-to 'glist type-spec))) |
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133 | (to-alien (translate-to-alien element-type-spec 'element t))) |
134 | `(let ((glist (make-pointer 0))) |
135 | (dolist (element ,list glist) |
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136 | (setq glist (glist-append glist ,to-alien ,element-type-spec)))))) |
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137 | |
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138 | (deftype-method translate-from-alien |
139 | glist (type-spec glist &optional (alloc :reference)) |
140 | (let ((element-type-spec (second (type-expand-to 'glist type-spec)))) |
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141 | `(let ((glist ,glist) |
142 | (list nil)) |
143 | (do ((tmp glist (glist-next tmp))) |
144 | ((null-pointer-p tmp)) |
145 | (push |
146 | ,(translate-from-alien |
147 | element-type-spec `(glist-data tmp ,element-type-spec) alloc) |
148 | list)) |
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149 | ,(when (eq alloc :reference) |
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150 | '(glist-free glist)) |
151 | (nreverse list)))) |
152 | |
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153 | (deftype-method cleanup-alien glist (type-spec glist &optional copied) |
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154 | (declare (ignore copied)) |
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155 | (let* ((element-type-spec (second (type-expand-to 'glist type-spec))) |
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156 | (alien-type-spec (translate-type-spec element-type-spec))) |
157 | `(let ((glist ,glist)) |
158 | (unless (null-pointer-p glist) |
159 | ,(when (eq alien-type-spec 'system-area-pointer) |
160 | `(do ((tmp glist (glist-next tmp))) |
161 | ((null-pointer-p tmp)) |
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162 | ,(cleanup-alien |
163 | element-type-spec `(glist-data tmp ,element-type-spec) t))) |
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164 | (glist-free glist))))) |
165 | |
166 | |
167 | |
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168 | ;;;; Single linked list (GSList) |
169 | |
170 | (deftype gslist (type) `(or (null (cons ,type list)))) |
171 | |
172 | (define-foreign ("g_slist_prepend" %gslist-prepend-unsigned) () pointer |
173 | (gslist pointer) |
174 | (data unsigned)) |
175 | |
176 | (define-foreign ("g_slist_prepend" %gslist-prepend-signed) () pointer |
177 | (gslist pointer) |
178 | (data signed)) |
179 | |
180 | (define-foreign ("g_slist_prepend" %gslist-prepend-sap) () pointer |
181 | (gslist pointer) |
182 | (data pointer)) |
183 | |
184 | (defmacro gslist-prepend (gslist value type-spec) |
185 | (ecase (first (mklist (translate-type-spec type-spec))) |
186 | (unsigned `(%gslist-prepend-unsigned ,gslist ,value)) |
187 | (signed `(%gslist-prepend-signed ,gslist ,value)) |
188 | (system-area-pointer `(%gslist-prepend-sap ,gslist ,value)))) |
189 | |
190 | (define-foreign ("g_slist_free" gslist-free) () nil |
191 | (gslist pointer)) |
192 | |
193 | (deftype-method translate-type-spec gslist (type-spec) |
194 | (declare (ignore type-spec)) |
195 | (translate-type-spec 'pointer)) |
196 | |
197 | (deftype-method size-of gslist (type-spec) |
198 | (declare (ignore type-spec)) |
199 | (size-of 'pointer)) |
200 | |
201 | (deftype-method translate-to-alien gslist (type-spec list &optional copy) |
202 | (declare (ignore copy)) |
203 | (let* ((element-type-spec (second (type-expand-to 'gslist type-spec))) |
204 | (to-alien (translate-to-alien element-type-spec 'element t))) |
205 | `(let ((gslist (make-pointer 0))) |
206 | (dolist (element (reverse ,list) gslist) |
207 | (setq gslist (gslist-prepend gslist ,to-alien ,element-type-spec)))))) |
208 | |
209 | (deftype-method translate-from-alien |
210 | gslist (type-spec gslist &optional (alloc :reference)) |
211 | (let ((element-type-spec (second (type-expand-to 'gslist type-spec)))) |
212 | `(let ((gslist ,gslist) |
213 | (list nil)) |
214 | (do ((tmp gslist (glist-next tmp))) |
215 | ((null-pointer-p tmp)) |
216 | (push |
217 | ,(translate-from-alien |
218 | element-type-spec `(glist-data tmp ,element-type-spec) alloc) |
219 | list)) |
220 | ,(when (eq alloc :reference) |
221 | '(gslist-free gslist)) |
222 | (nreverse list)))) |
223 | |
224 | (deftype-method cleanup-alien gslist (type-spec gslist &optional copied) |
225 | (declare (ignore copied)) |
226 | (let* ((element-type-spec (second (type-expand-to 'gslist type-spec))) |
227 | (alien-type-spec (translate-type-spec element-type-spec))) |
228 | `(let ((gslist ,gslist)) |
229 | (unless (null-pointer-p gslist) |
230 | ,(when (eq alien-type-spec 'system-area-pointer) |
231 | `(do ((tmp gslist (glist-next tmp))) |
232 | ((null-pointer-p tmp)) |
233 | ,(cleanup-alien |
234 | element-type-spec `(glist-data tmp ,element-type-spec) t))) |
235 | (gslist-free gslist))))) |
236 | |
237 | |
238 | |
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239 | ;;; Vector |
240 | |
241 | (deftype-method translate-type-spec vector (type-spec) |
242 | (declare (ignore type-spec)) |
243 | (translate-type-spec 'pointer)) |
244 | |
245 | (deftype-method size-of vector (type-spec) |
246 | (declare (ignore type-spec)) |
247 | (size-of 'pointer)) |
248 | |
249 | (deftype-method translate-to-alien vector (type-spec vector &optional copy) |
250 | (declare (ignore copy)) |
251 | (destructuring-bind (element-type &optional (length '*)) |
252 | (cdr (type-expand-to 'vector type-spec)) |
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253 | (let ((element-size (size-of element-type))) |
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254 | `(let ((vector ,vector)) |
255 | (let ((c-vector |
256 | (allocate-memory |
257 | ,(if (eq length '*) |
258 | `(* ,element-size (length vector)) |
259 | (* element-size length))))) |
260 | (dotimes (i ,(if (eq length '*) '(length vector) length) c-vector) |
261 | (setf |
262 | (,(sap-ref-fname element-type) c-vector (* i ,element-size)) |
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263 | ,(translate-to-alien element-type '(aref vector i) :copy)))))))) |
264 | |
265 | (deftype-method translate-from-alien |
266 | vector (type-spec sap &optional (alloc :reference)) |
267 | (destructuring-bind (element-type &optional (length '*)) |
268 | (cdr (type-expand-to 'vector type-spec)) |
269 | (when (eq length '*) |
270 | (error "Can't use vectors of variable length as return type")) |
271 | (let ((element-size (size-of element-type))) |
272 | `(let ((sap ,sap) |
273 | (vector (make-array ,length :element-type ',element-type))) |
274 | (dotimes (i ,length vector) |
275 | (setf |
276 | (aref vector i) |
277 | ,(translate-to-alien |
278 | element-type |
279 | `(,(sap-ref-fname element-type) sap (* i ,element-size)) |
280 | alloc))))))) |
281 | |
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282 | |
283 | (deftype-method cleanup-alien vector (type-spec sap &optional copied) |
284 | (declare (ignore type-spec copied)) |
285 | ;; The individual elements also have to be cleaned up to avoid memory leaks, |
286 | ;; but this is currently not possible because we can't always tell the |
287 | ;; length of the vector |
288 | `(deallocate-memory ,sap)) |