| 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 | |
| 18 | ;; $Id: glib.lisp,v 1.7 2000/10/05 17:17:41 espen Exp $ |
| 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 | |
| 43 | ;;;; Quarks |
| 44 | |
| 45 | (deftype quark () 'unsigned) |
| 46 | |
| 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*)))) |
| 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))) |
| 65 | (setf |
| 66 | (gethash hash-code *quark-from-object*) |
| 67 | (append |
| 68 | (gethash hash-code *quark-from-object*) |
| 69 | (list (cons object quark)))) |
| 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 | |
| 87 | ;;;; Linked list (GList) |
| 88 | |
| 89 | (deftype glist (type) `(or (null (cons ,type list)))) |
| 90 | |
| 91 | (define-foreign ("g_list_append" %glist-append-unsigned) () pointer |
| 92 | (glist pointer) |
| 93 | (data unsigned)) |
| 94 | |
| 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 | |
| 103 | (defmacro glist-append (glist value type-spec) |
| 104 | (ecase (first (mklist (translate-type-spec type-spec))) |
| 105 | (unsigned `(%glist-append-unsigned ,glist ,value)) |
| 106 | (signed `(%glist-append-signed ,glist ,value)) |
| 107 | (system-area-pointer `(%glist-append-sap ,glist ,value)))) |
| 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 | |
| 115 | (defun glist-next (glist) |
| 116 | (unless (null-pointer-p glist) |
| 117 | (sap-ref-sap glist +size-of-sap+))) |
| 118 | |
| 119 | (define-foreign ("g_list_free" glist-free) () nil |
| 120 | (glist pointer)) |
| 121 | |
| 122 | (deftype-method translate-type-spec glist (type-spec) |
| 123 | (declare (ignore type-spec)) |
| 124 | (translate-type-spec 'pointer)) |
| 125 | |
| 126 | (deftype-method size-of glist (type-spec) |
| 127 | (declare (ignore type-spec)) |
| 128 | (size-of 'pointer)) |
| 129 | |
| 130 | (deftype-method translate-to-alien glist (type-spec list &optional copy) |
| 131 | (declare (ignore copy)) |
| 132 | (let* ((element-type-spec (second (type-expand-to 'glist type-spec))) |
| 133 | (to-alien (translate-to-alien element-type-spec 'element t))) |
| 134 | `(let ((glist (make-pointer 0))) |
| 135 | (dolist (element ,list glist) |
| 136 | (setq glist (glist-append glist ,to-alien ,element-type-spec)))))) |
| 137 | |
| 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)))) |
| 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)) |
| 149 | ,(when (eq alloc :reference) |
| 150 | '(glist-free glist)) |
| 151 | (nreverse list)))) |
| 152 | |
| 153 | (deftype-method cleanup-alien glist (type-spec glist &optional copied) |
| 154 | (declare (ignore copied)) |
| 155 | (let* ((element-type-spec (second (type-expand-to 'glist type-spec))) |
| 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)) |
| 162 | ,(cleanup-alien |
| 163 | element-type-spec `(glist-data tmp ,element-type-spec) t))) |
| 164 | (glist-free glist))))) |
| 165 | |
| 166 | |
| 167 | |
| 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 | |
| 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)) |
| 253 | (let ((element-size (size-of element-type))) |
| 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)) |
| 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 | |
| 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)) |