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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 1.6 2000-09-04 22:10:26 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 |
88 | |
89 | (deftype glist () 'pointer) |
90 | (deftype double-list (type) `(or (null (cons ,type list)))) |
91 | |
92 | |
93 | (define-foreign ("g_list_append" %glist-append) () glist |
94 | (glist glist) |
95 | (data unsigned)) |
96 | |
97 | (defmacro glist-append (glist value type-spec) |
98 | (ecase (first (mklist (translate-type-spec type-spec))) |
99 | (unsigned `(%glist-append ,glist ,value)) |
100 | ; (signed `(%glist-append ,glist (signed-to-unsigned ,value))) |
101 | (system-area-pointer `(%glist-append ,glist (system:sap-int ,value))))) |
102 | |
103 | |
104 | (defmacro glist-data (glist type-spec) |
105 | (ecase (first (mklist (translate-type-spec type-spec))) |
106 | (unsigned `(sap-ref-unsigned ,glist 0)) |
107 | (signed `(sap-ref-signed ,glist 0)) |
108 | (system-area-pointer `(sap-ref-sap ,glist 0)))) |
109 | |
110 | |
111 | (defun glist-next (glist) |
112 | (unless (null-pointer-p glist) |
113 | (sap-ref-sap glist +size-of-sap+))) |
114 | |
115 | |
116 | (define-foreign ("g_list_free" glist-free) () nil |
117 | (glist pointer)) |
118 | |
119 | |
120 | (deftype-method translate-type-spec double-list (type-spec) |
121 | (declare (ignore type-spec)) |
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122 | (translate-type-spec 'pointer)) |
123 | |
124 | (deftype-method size-of double-list (type-spec) |
125 | (declare (ignore type-spec)) |
126 | (size-of 'pointer)) |
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127 | |
128 | (deftype-method translate-to-alien double-list (type-spec list &optional copy) |
129 | (declare (ignore copy)) |
130 | (let* ((element-type-spec (second (type-expand-to 'double-list type-spec))) |
131 | (to-alien (translate-to-alien element-type-spec 'element t))) |
132 | `(let ((glist (make-pointer 0))) |
133 | (dolist (element ,list glist) |
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134 | (setq glist (glist-append glist ,to-alien ,element-type-spec)))))) |
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135 | |
136 | (deftype-method |
137 | translate-from-alien |
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138 | double-list (type-spec glist &optional (alloc :reference)) |
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139 | (let ((element-type-spec (second (type-expand-to 'double-list type-spec)))) |
140 | `(let ((glist ,glist) |
141 | (list nil)) |
142 | (do ((tmp glist (glist-next tmp))) |
143 | ((null-pointer-p tmp)) |
144 | (push |
145 | ,(translate-from-alien |
146 | element-type-spec `(glist-data tmp ,element-type-spec) alloc) |
147 | list)) |
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148 | ,(when (eq alloc :reference) |
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149 | '(glist-free glist)) |
150 | (nreverse list)))) |
151 | |
152 | (deftype-method cleanup-alien double-list (type-spec glist &optional copied) |
153 | (declare (ignore copied)) |
154 | (let* ((element-type-spec (second (type-expand-to 'double-list type-spec))) |
155 | (alien-type-spec (translate-type-spec element-type-spec))) |
156 | `(let ((glist ,glist)) |
157 | (unless (null-pointer-p glist) |
158 | ,(when (eq alien-type-spec 'system-area-pointer) |
159 | `(do ((tmp glist (glist-next tmp))) |
160 | ((null-pointer-p tmp)) |
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161 | ,(cleanup-alien |
162 | element-type-spec `(glist-data tmp ,element-type-spec) t))) |
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163 | (glist-free glist))))) |
164 | |
165 | |
166 | |
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167 | ;;; Vector |
168 | |
169 | (deftype-method translate-type-spec vector (type-spec) |
170 | (declare (ignore type-spec)) |
171 | (translate-type-spec 'pointer)) |
172 | |
173 | (deftype-method size-of vector (type-spec) |
174 | (declare (ignore type-spec)) |
175 | (size-of 'pointer)) |
176 | |
177 | (deftype-method translate-to-alien vector (type-spec vector &optional copy) |
178 | (declare (ignore copy)) |
179 | (destructuring-bind (element-type &optional (length '*)) |
180 | (cdr (type-expand-to 'vector type-spec)) |
181 | (let ((element-to-alien (translate-to-alien element-type 'element :copy)) |
182 | (element-size (size-of element-type))) |
183 | `(let ((vector ,vector)) |
184 | (let ((c-vector |
185 | (allocate-memory |
186 | ,(if (eq length '*) |
187 | `(* ,element-size (length vector)) |
188 | (* element-size length))))) |
189 | (dotimes (i ,(if (eq length '*) '(length vector) length) c-vector) |
190 | (setf |
191 | (,(sap-ref-fname element-type) c-vector (* i ,element-size)) |
192 | ,(translate-to-alien element-type '(svref vector i) :copy)))))))) |
193 | |
194 | (deftype-method cleanup-alien vector (type-spec sap &optional copied) |
195 | (declare (ignore type-spec copied)) |
196 | ;; The individual elements also have to be cleaned up to avoid memory leaks, |
197 | ;; but this is currently not possible because we can't always tell the |
198 | ;; length of the vector |
199 | `(deallocate-memory ,sap)) |