| 1 | ;; Common Lisp bindings for GTK+ 2.x |
| 2 | ;; Copyright 1999-2005 Espen S. Johnsen <espen@users.sf.net> |
| 3 | ;; |
| 4 | ;; Permission is hereby granted, free of charge, to any person obtaining |
| 5 | ;; a copy of this software and associated documentation files (the |
| 6 | ;; "Software"), to deal in the Software without restriction, including |
| 7 | ;; without limitation the rights to use, copy, modify, merge, publish, |
| 8 | ;; distribute, sublicense, and/or sell copies of the Software, and to |
| 9 | ;; permit persons to whom the Software is furnished to do so, subject to |
| 10 | ;; the following conditions: |
| 11 | ;; |
| 12 | ;; The above copyright notice and this permission notice shall be |
| 13 | ;; included in all copies or substantial portions of the Software. |
| 14 | ;; |
| 15 | ;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 16 | ;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 17 | ;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 18 | ;; IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 19 | ;; CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 20 | ;; TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 21 | ;; SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 22 | |
| 23 | ;; $Id: glib.lisp,v 1.44 2008-10-08 18:11:12 espen Exp $ |
| 24 | |
| 25 | |
| 26 | (in-package "GLIB") |
| 27 | |
| 28 | (use-prefix "g") |
| 29 | |
| 30 | #-sb-thread |
| 31 | (progn |
| 32 | (defun make-mutex () |
| 33 | nil) |
| 34 | |
| 35 | (defmacro with-mutex ((mutex) &body body) |
| 36 | (declare (ignore mutex)) |
| 37 | `(progn ,@body))) |
| 38 | |
| 39 | |
| 40 | ;;;; Memory management |
| 41 | |
| 42 | (deftype gsize () 'unsigned-int) |
| 43 | |
| 44 | (defbinding malloc0 () pointer |
| 45 | (size gsize)) |
| 46 | |
| 47 | (defbinding free () nil |
| 48 | (address pointer)) |
| 49 | |
| 50 | (setf *memory-allocator* #'malloc0) |
| 51 | (setf *memory-deallocator* #'free) |
| 52 | |
| 53 | (defbinding (reallocate-memory "g_realloc") () pointer |
| 54 | (address pointer) |
| 55 | (size gsize)) |
| 56 | |
| 57 | (defbinding (slice-alloc "g_slice_alloc0") () pointer |
| 58 | (block-size gsize)) |
| 59 | |
| 60 | ;;;; User data is a mechanism to store references to lisp objects in |
| 61 | ;;;; foreign code |
| 62 | |
| 63 | (defvar *user-data-lock* (make-mutex)) |
| 64 | (defvar *user-data* (make-hash-table)) |
| 65 | (defvar *user-data-next-id* 1) |
| 66 | |
| 67 | (defun register-user-data (object &optional destroy-function) |
| 68 | (check-type destroy-function (or null symbol function)) |
| 69 | (with-mutex (*user-data-lock*) |
| 70 | (setf |
| 71 | (gethash *user-data-next-id* *user-data*) |
| 72 | (cons object destroy-function)) |
| 73 | (1- (incf *user-data-next-id*)))) |
| 74 | |
| 75 | (defun find-user-data (id) |
| 76 | (check-type id fixnum) |
| 77 | (with-mutex (*user-data-lock*) |
| 78 | (multiple-value-bind (user-data p) (gethash id *user-data*) |
| 79 | (values (car user-data) p)))) |
| 80 | |
| 81 | (defun user-data-exists-p (id) |
| 82 | (nth-value 1 (find-user-data id))) |
| 83 | |
| 84 | (defun update-user-data (id object) |
| 85 | (check-type id fixnum) |
| 86 | (with-mutex (*user-data-lock*) |
| 87 | (multiple-value-bind (user-data exists-p) (gethash id *user-data*) |
| 88 | (cond |
| 89 | ((not exists-p) (error "User data id ~A does not exist" id)) |
| 90 | (t |
| 91 | (when (cdr user-data) |
| 92 | (funcall (cdr user-data) (car user-data))) |
| 93 | (setf (car user-data) object)))))) |
| 94 | |
| 95 | (defun destroy-user-data (id) |
| 96 | (check-type id fixnum) |
| 97 | (with-mutex (*user-data-lock*) |
| 98 | (multiple-value-bind (user-data exists-p) (gethash id *user-data*) |
| 99 | (cond |
| 100 | ; ((not exists-p) (error "User data id ~A does not exist" id)) |
| 101 | (t |
| 102 | (when (cdr user-data) |
| 103 | (funcall (cdr user-data) (car user-data))) |
| 104 | (remhash id *user-data*)))))) |
| 105 | |
| 106 | (defun take-user-data (id) |
| 107 | (check-type id fixnum) |
| 108 | (multiple-value-bind (user-data exists-p) (gethash id *user-data*) |
| 109 | (cond |
| 110 | ((not exists-p) (error "User data id ~A does not exist" id)) |
| 111 | (t |
| 112 | (when (cdr user-data) |
| 113 | (funcall (cdr user-data) (car user-data))) |
| 114 | (remhash id *user-data*) |
| 115 | (car user-data))))) |
| 116 | |
| 117 | (defmacro with-user-data ((var object) &body body) |
| 118 | `(let ((,var (register-user-data ,object))) |
| 119 | (unwind-protect |
| 120 | ,@body |
| 121 | (destroy-user-data ,var)))) |
| 122 | |
| 123 | |
| 124 | (deftype user-data-id () 'pointer-data) |
| 125 | |
| 126 | |
| 127 | ;;;; Quarks |
| 128 | |
| 129 | (deftype quark () 'unsigned) |
| 130 | |
| 131 | (defbinding %quark-from-string () quark |
| 132 | (string string)) |
| 133 | |
| 134 | (defun quark-intern (object) |
| 135 | (etypecase object |
| 136 | (quark object) |
| 137 | (string (%quark-from-string object)) |
| 138 | (symbol (%quark-from-string (format nil "clg-~A:~A" |
| 139 | (package-name (symbol-package object)) |
| 140 | object))))) |
| 141 | |
| 142 | (defbinding quark-to-string () (static string) |
| 143 | (quark quark)) |
| 144 | |
| 145 | |
| 146 | ;;;; Linked list (GList) |
| 147 | |
| 148 | (deftype glist (type) |
| 149 | `(or null (cons ,type list))) |
| 150 | |
| 151 | (defbinding (%glist-prepend "g_list_prepend") () pointer |
| 152 | (glist (or null pointer)) |
| 153 | (nil null)) |
| 154 | |
| 155 | (defbinding (%glist-reverse "g_list_reverse") () pointer |
| 156 | (glist (or null pointer))) |
| 157 | |
| 158 | (defun make-glist (element-type list &optional temp-p) |
| 159 | (let ((writer (if (functionp element-type) |
| 160 | element-type |
| 161 | (writer-function element-type :temp temp-p)))) |
| 162 | (loop |
| 163 | for element in list |
| 164 | as glist = (%glist-prepend nil) then (%glist-prepend glist) |
| 165 | do (funcall writer element glist) |
| 166 | finally (return (%glist-reverse glist))))) |
| 167 | |
| 168 | (defun glist-next (glist) |
| 169 | (unless (null-pointer-p glist) |
| 170 | (ref-pointer glist #.(size-of 'pointer)))) |
| 171 | |
| 172 | ;; Also used for gslists |
| 173 | (defun map-glist (seqtype function glist element-type &optional (ref :read)) |
| 174 | (let ((reader (if (functionp element-type) |
| 175 | element-type |
| 176 | (reader-function element-type :ref ref)))) |
| 177 | (case seqtype |
| 178 | ((nil) |
| 179 | (loop |
| 180 | as element = glist then (glist-next element) |
| 181 | until (null-pointer-p element) |
| 182 | do (funcall function (funcall reader element)))) |
| 183 | (list |
| 184 | (loop |
| 185 | as element = glist then (glist-next element) |
| 186 | until (null-pointer-p element) |
| 187 | collect (funcall function (funcall reader element)))) |
| 188 | (t |
| 189 | (coerce |
| 190 | (loop |
| 191 | as element = glist then (glist-next element) |
| 192 | until (null-pointer-p element) |
| 193 | collect (funcall function (funcall reader element))) |
| 194 | seqtype))))) |
| 195 | |
| 196 | (defbinding (glist-free "g_list_free") () nil |
| 197 | (glist pointer)) |
| 198 | |
| 199 | (defun destroy-glist (glist element-type &optional temp-p) |
| 200 | (let ((destroy (if (functionp element-type) |
| 201 | element-type |
| 202 | (destroy-function element-type :temp temp-p)))) |
| 203 | (loop |
| 204 | as element = glist then (glist-next element) |
| 205 | until (null-pointer-p element) |
| 206 | do (funcall destroy element))) |
| 207 | (glist-free glist)) |
| 208 | |
| 209 | (define-type-method alien-type ((type glist)) |
| 210 | (declare (ignore type)) |
| 211 | (alien-type 'pointer)) |
| 212 | |
| 213 | (define-type-method argument-type ((type glist)) |
| 214 | 'list) |
| 215 | |
| 216 | (define-type-method return-type ((type glist)) |
| 217 | 'list) |
| 218 | |
| 219 | (define-type-method size-of ((type glist) &key inlined) |
| 220 | (assert-not-inlined type inlined) |
| 221 | (size-of 'pointer)) |
| 222 | |
| 223 | (define-type-method type-alignment ((type glist) &key inlined) |
| 224 | (assert-not-inlined type inlined) |
| 225 | (type-alignment 'pointer)) |
| 226 | |
| 227 | (define-type-method alien-arg-wrapper ((type glist) var list style form &optional copy-in-p) |
| 228 | (destructuring-bind (element-type) (rest (type-expand-to 'glist type)) |
| 229 | (cond |
| 230 | ((and (in-arg-p style) (not (out-arg-p style))) |
| 231 | `(with-pointer (,var (make-glist ',element-type ,list ,(not copy-in-p))) |
| 232 | (unwind-protect |
| 233 | ,form |
| 234 | ,(unless copy-in-p |
| 235 | `(destroy-glist ,var ',element-type t))))) |
| 236 | ((and (in-arg-p style) (out-arg-p style)) |
| 237 | (let ((glist (make-symbol "GLIST"))) |
| 238 | `(with-pointer (,glist (make-glist ',element-type ,list ,(not copy-in-p))) |
| 239 | (with-pointer (,var ,glist) |
| 240 | (unwind-protect |
| 241 | ,form |
| 242 | ,(unless copy-in-p |
| 243 | `(destroy-glist ,glist ',element-type t))))))) |
| 244 | ((and (out-arg-p style) (not (in-arg-p style))) |
| 245 | `(with-pointer (,var) |
| 246 | ,form))))) |
| 247 | |
| 248 | (define-type-method to-alien-form ((type glist) list &optional copy-p) |
| 249 | (declare (ignore copy-p)) |
| 250 | (destructuring-bind (element-type) (rest (type-expand-to 'glist type)) |
| 251 | `(make-glist ',element-type ,list))) |
| 252 | |
| 253 | (define-type-method to-alien-function ((type glist) &optional copy-p) |
| 254 | (destructuring-bind (element-type) (rest (type-expand-to 'glist type)) |
| 255 | (values |
| 256 | #'(lambda (list) |
| 257 | (make-glist element-type list (not copy-p))) |
| 258 | (unless copy-p |
| 259 | #'(lambda (list glist) |
| 260 | (declare (ignore list)) |
| 261 | (destroy-glist glist element-type t)))))) |
| 262 | |
| 263 | (define-type-method from-alien-form ((type glist) form &key (ref :free)) |
| 264 | (destructuring-bind (element-type) (rest (type-expand-to 'glist type)) |
| 265 | `(let ((glist ,form)) |
| 266 | (unwind-protect |
| 267 | (map-glist 'list #'identity glist ',element-type |
| 268 | ,(ecase ref (:free :get) ((:static :temp) :peek) (:copy :read))) |
| 269 | ,(when (eq ref :free) |
| 270 | `(destroy-glist glist ',element-type)))))) |
| 271 | |
| 272 | (define-type-method from-alien-function ((type glist) &key (ref :free)) |
| 273 | (destructuring-bind (element-type) (rest (type-expand-to 'glist type)) |
| 274 | (ecase ref |
| 275 | (:free |
| 276 | #'(lambda (glist) |
| 277 | (prog1 |
| 278 | (map-glist 'list #'identity glist element-type :get) |
| 279 | (glist-free glist)))) |
| 280 | (:copy |
| 281 | #'(lambda (glist) |
| 282 | (map-glist 'list #'identity glist element-type :read))) |
| 283 | ((:static :temp) |
| 284 | #'(lambda (glist) |
| 285 | (map-glist 'list #'identity glist element-type :peek)))))) |
| 286 | |
| 287 | (define-type-method writer-function ((type glist) &key temp inlined) |
| 288 | (assert-not-inlined type inlined) |
| 289 | (let ((element-type (second (type-expand-to 'glist type)))) |
| 290 | #'(lambda (list location &optional (offset 0)) |
| 291 | (setf |
| 292 | (ref-pointer location offset) |
| 293 | (make-glist element-type list temp))))) |
| 294 | |
| 295 | (define-type-method reader-function ((type glist) &key (ref :read) inlined) |
| 296 | (assert-not-inlined type inlined) |
| 297 | (let ((element-type (second (type-expand-to 'glist type)))) |
| 298 | (ecase ref |
| 299 | ((:read :peek) |
| 300 | #'(lambda (location &optional (offset 0)) |
| 301 | (unless (null-pointer-p (ref-pointer location offset)) |
| 302 | (map-glist 'list #'identity (ref-pointer location offset) element-type ref)))) |
| 303 | (:get |
| 304 | #'(lambda (location &optional (offset 0)) |
| 305 | (unless (null-pointer-p (ref-pointer location offset)) |
| 306 | (prog1 |
| 307 | (map-glist 'list #'identity (ref-pointer location offset) element-type :get) |
| 308 | (glist-free (ref-pointer location offset)) |
| 309 | (setf (ref-pointer location offset) (make-pointer 0))))))))) |
| 310 | |
| 311 | (define-type-method destroy-function ((type glist) &key temp inlined) |
| 312 | (assert-not-inlined type inlined) |
| 313 | (let ((element-type (second (type-expand-to 'glist type)))) |
| 314 | #'(lambda (location &optional (offset 0)) |
| 315 | (unless (null-pointer-p (ref-pointer location offset)) |
| 316 | (destroy-glist (ref-pointer location offset) element-type temp) |
| 317 | (setf (ref-pointer location offset) (make-pointer 0)))))) |
| 318 | |
| 319 | (define-type-method copy-function ((type glist) &key inlined) |
| 320 | (assert-not-inlined type inlined) |
| 321 | (destructuring-bind (element-type) (rest (type-expand-to 'glist type)) |
| 322 | (let ((copy-element (copy-function element-type))) |
| 323 | #'(lambda (from to &optional (offset 0)) |
| 324 | (unless (null-pointer-p (ref-pointer from offset)) |
| 325 | (loop |
| 326 | as from-list = (ref-pointer from offset) then (glist-next from-list) |
| 327 | as to-list = (%glist-prepend nil) then (%glist-prepend to-list) |
| 328 | do (funcall copy-element from-list to-list) |
| 329 | while (glist-next from-list) |
| 330 | finally (setf (ref-pointer to offset) (%glist-reverse to-list)))))))) |
| 331 | |
| 332 | |
| 333 | ;;;; Single linked list (GSList) |
| 334 | |
| 335 | (deftype gslist (type) `(or null (cons ,type list))) |
| 336 | |
| 337 | (defbinding (%gslist-prepend "g_slist_prepend") () pointer |
| 338 | (gslist pointer) |
| 339 | (nil null)) |
| 340 | |
| 341 | (defbinding (%gslist-append "g_slist_append") () pointer |
| 342 | (glist (or null pointer)) |
| 343 | (nil null)) |
| 344 | |
| 345 | |
| 346 | (defun make-gslist (element-type list &optional temp-p) |
| 347 | (let ((writer (if (functionp element-type) |
| 348 | element-type |
| 349 | (writer-function element-type :temp temp-p)))) |
| 350 | (loop |
| 351 | for element in (reverse list) |
| 352 | as gslist = (%gslist-prepend (make-pointer 0)) then (%gslist-prepend gslist) |
| 353 | do (funcall writer element gslist) |
| 354 | finally (return gslist)))) |
| 355 | |
| 356 | (defbinding (gslist-free "g_slist_free") () nil |
| 357 | (gslist pointer)) |
| 358 | |
| 359 | (defun destroy-gslist (gslist element-type &optional temp-p) |
| 360 | (loop |
| 361 | with destroy = (destroy-function element-type :temp temp-p) |
| 362 | as element = gslist then (glist-next element) |
| 363 | until (null-pointer-p element) |
| 364 | do (funcall destroy element 0)) |
| 365 | (gslist-free gslist)) |
| 366 | |
| 367 | (define-type-method alien-type ((type gslist)) |
| 368 | (declare (ignore type)) |
| 369 | (alien-type 'pointer)) |
| 370 | |
| 371 | (define-type-method argument-type ((type gslist)) |
| 372 | 'list) |
| 373 | |
| 374 | (define-type-method return-type ((type gslist)) |
| 375 | 'list) |
| 376 | |
| 377 | (define-type-method size-of ((type gslist) &key inlined) |
| 378 | (assert-not-inlined type inlined) |
| 379 | (size-of 'pointer)) |
| 380 | |
| 381 | (define-type-method type-alignment ((type gslist) &key inlined) |
| 382 | (assert-not-inlined type inlined) |
| 383 | (type-alignment 'pointer)) |
| 384 | |
| 385 | (define-type-method alien-arg-wrapper ((type gslist) var list style form &optional copy-in-p) |
| 386 | (destructuring-bind (element-type) (rest (type-expand-to 'gslist type)) |
| 387 | (cond |
| 388 | ((and (in-arg-p style) (not (out-arg-p style))) |
| 389 | `(with-pointer (,var (make-gslist ',element-type ,list ,(not copy-in-p))) |
| 390 | (unwind-protect |
| 391 | ,form |
| 392 | ,(unless copy-in-p |
| 393 | `(destroy-gslist ,var ',element-type t))))) |
| 394 | ((and (in-arg-p style) (out-arg-p style)) |
| 395 | (let ((gslist (make-symbol "GSLIST"))) |
| 396 | `(with-pointer (,gslist (make-gslist ',element-type ,list ,(not copy-in-p))) |
| 397 | (with-pointer (,var ,gslist) |
| 398 | (unwind-protect |
| 399 | ,form |
| 400 | ,(unless copy-in-p |
| 401 | `(destroy-gslist ,gslist ',element-type t))))))) |
| 402 | ((and (out-arg-p style) (not (in-arg-p style))) |
| 403 | `(with-pointer (,var) |
| 404 | ,form))))) |
| 405 | |
| 406 | (define-type-method to-alien-form ((type gslist) list &optional copy-p) |
| 407 | (declare (ignore copy-p)) |
| 408 | (destructuring-bind (element-type) (rest (type-expand-to 'gslist type)) |
| 409 | `(make-gslist ',element-type ,list))) |
| 410 | |
| 411 | (define-type-method to-alien-function ((type gslist) &optional copy-p) |
| 412 | (destructuring-bind (element-type) (rest (type-expand-to 'gslist type)) |
| 413 | (values |
| 414 | #'(lambda (list) |
| 415 | (make-gslist element-type list (not copy-p))) |
| 416 | (unless copy-p |
| 417 | #'(lambda (list gslist) |
| 418 | (declare (ignore list)) |
| 419 | (destroy-gslist gslist element-type t)))))) |
| 420 | |
| 421 | (define-type-method from-alien-form ((type gslist) form &key (ref :free)) |
| 422 | (destructuring-bind (element-type) (rest (type-expand-to 'gslist type)) |
| 423 | `(let ((gslist ,form)) |
| 424 | (unwind-protect |
| 425 | (map-glist 'list #'identity gslist ',element-type |
| 426 | ,(ecase ref (:free :get) ((:static :temp) :peek) (:copy :read))) |
| 427 | ,(when (eq ref :free) |
| 428 | `(destroy-gslist gslist ',element-type)))))) |
| 429 | |
| 430 | (define-type-method from-alien-function ((type gslist) &key (ref :free)) |
| 431 | (destructuring-bind (element-type) (rest (type-expand-to 'gslist type)) |
| 432 | (ecase ref |
| 433 | (:free |
| 434 | #'(lambda (glist) |
| 435 | (prog1 |
| 436 | (map-glist 'list #'identity glist element-type :get) |
| 437 | (gslist-free glist)))) |
| 438 | (:copy |
| 439 | #'(lambda (glist) |
| 440 | (map-glist 'list #'identity glist element-type :read))) |
| 441 | ((:static :temp) |
| 442 | #'(lambda (glist) |
| 443 | (map-glist 'list #'identity glist element-type :peek)))))) |
| 444 | |
| 445 | (define-type-method writer-function ((type gslist) &key temp inlined) |
| 446 | (assert-not-inlined type inlined) |
| 447 | (destructuring-bind (element-type) (rest (type-expand-to 'gslist type)) |
| 448 | (let ((element-writer (writer-function element-type :temp temp))) |
| 449 | #'(lambda (list location &optional (offset 0)) |
| 450 | (setf |
| 451 | (ref-pointer location offset) |
| 452 | (make-gslist element-writer list)))))) |
| 453 | |
| 454 | (define-type-method reader-function ((type gslist) &key (ref :read) inlined) |
| 455 | (assert-not-inlined type inlined) |
| 456 | (let ((element-type (second (type-expand-to 'gslist type)))) |
| 457 | (ecase ref |
| 458 | ((:read :peek) |
| 459 | #'(lambda (location &optional (offset 0)) |
| 460 | (unless (null-pointer-p (ref-pointer location offset)) |
| 461 | (map-glist 'list #'identity (ref-pointer location offset) element-type ref)))) |
| 462 | (:get |
| 463 | #'(lambda (location &optional (offset 0)) |
| 464 | (unless (null-pointer-p (ref-pointer location offset)) |
| 465 | (prog1 |
| 466 | (map-glist 'list #'identity (ref-pointer location offset) element-type :get) |
| 467 | (gslist-free (ref-pointer location offset)) |
| 468 | (setf (ref-pointer location offset) (make-pointer 0))))))))) |
| 469 | |
| 470 | (define-type-method destroy-function ((type gslist) &key temp inlined) |
| 471 | (assert-not-inlined type inlined) |
| 472 | (let ((element-type (second (type-expand-to 'gslist type)))) |
| 473 | #'(lambda (location &optional (offset 0)) |
| 474 | (unless (null-pointer-p (ref-pointer location offset)) |
| 475 | (destroy-gslist (ref-pointer location offset) element-type temp) |
| 476 | (setf (ref-pointer location offset) (make-pointer 0)))))) |
| 477 | |
| 478 | (define-type-method copy-function ((type gslist) &key inlined) |
| 479 | (assert-not-inlined type inlined) |
| 480 | (destructuring-bind (element-type) (rest (type-expand-to 'gslist type)) |
| 481 | (let ((copy-element (copy-function element-type))) |
| 482 | #'(lambda (from to &optional (offset 0)) |
| 483 | (unless (null-pointer-p (ref-pointer from offset)) |
| 484 | (loop |
| 485 | as from-list = (ref-pointer from offset) |
| 486 | then (glist-next from-list) |
| 487 | as to-list = (setf (ref-pointer to offset) (%gslist-append nil)) |
| 488 | then (%gslist-append to-list) |
| 489 | do (funcall copy-element from-list to-list) |
| 490 | while (glist-next from-list))))))) |