mdw@git.distorted.org.uk Git - clg/blob - glib/glib.lisp

   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 1.23 2005-01-03 16:38:57 espen Exp $
  19
  20
  21 (in-package "GLIB")
  22
  23 (use-prefix "g")
  24
  25
  26 ;;;; Memory management
  27
  28 (defbinding (allocate-memory "g_malloc0") () pointer
  29   (size unsigned-long))
  30
  31 (defbinding (reallocate-memory "g_realloc") () pointer
  32   (address pointer)
  33   (size unsigned-long))
  34
  35 (defbinding (deallocate-memory "g_free") () nil
  36   (address pointer))
  37 ;; (defun deallocate-memory (address)
  38 ;;   (declare (ignore address)))
  39
  40 (defun copy-memory (from length &optional (to (allocate-memory length)))
  41   (kernel:system-area-copy from 0 to 0 (* 8 length))
  42   to)
  43
  44
  45 ;;;; User data mechanism
  46
  47 (internal *user-data* *user-data-count*)
  48
  49 (declaim (fixnum *user-data-count*))
  50
  51 (defvar *user-data* (make-hash-table))
  52 (defvar *user-data-count* 0)
  53
  54 (defun register-user-data (object &optional destroy-function)
  55   (check-type destroy-function (or null symbol function))
  56   (incf *user-data-count*)
  57   (setf
  58    (gethash *user-data-count* *user-data*)
  59    (cons object destroy-function))
  60   *user-data-count*)
  61
  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)))
  66
  67 (defun update-user-data (id object)
  68   (check-type id fixnum)
  69   (multiple-value-bind (user-data exists-p) (gethash id *user-data*)
  70     (cond
  71      ((not exists-p) (error "User data id ~A does not exist" id))
  72      (t
  73       (when (cdr user-data)
  74         (funcall (cdr user-data) (car user-data)))
  75       (setf (car user-data) object)))))
  76
  77 (defun destroy-user-data (id)
  78   (check-type id fixnum)
  79   (let ((user-data (gethash id *user-data*)))
  80     (when (cdr user-data)
  81       (funcall (cdr user-data) (car user-data))))
  82   (remhash id *user-data*))
  83
  84
  85 ;;;; Quarks
  86
  87 (internal *quark-counter* *quark-from-object* *quark-to-object*)
  88
  89 (deftype quark () 'unsigned)
  90
  91 ;(defbinding %quark-get-reserved () quark)
  92
  93 (defbinding %quark-from-string () quark
  94   (string string))
  95
  96 (defvar *quark-counter* 0)
  97
  98 (defun %quark-get-reserved ()
  99   ;; The string is just a dummy
 100   (%quark-from-string (format nil "#@£$%&-quark-~D" (incf *quark-counter*))))
 101
 102 (defvar *quark-from-object* (make-hash-table))
 103 (defvar *quark-to-object* (make-hash-table))
 104
 105 (defun quark-from-object (object &key (test #'eq))
 106   (let ((hash-code (sxhash object)))
 107     (or
 108      (assoc-ref object (gethash hash-code *quark-from-object*) :test test)
 109      (let ((quark (%quark-get-reserved)))
 110        (setf
 111         (gethash hash-code *quark-from-object*)
 112         (append
 113          (gethash hash-code *quark-from-object*)
 114          (list (cons object quark))))
 115        (setf (gethash quark *quark-to-object*) object)
 116        quark))))
 117
 118 (defun quark-to-object (quark)
 119   (gethash quark *quark-to-object*))
 120
 121 (defun remove-quark (quark)
 122   (let* ((object (gethash quark *quark-to-object*))
 123          (hash-code (sxhash object)))
 124     (remhash quark *quark-to-object*)
 125     (unless (setf
 126              (gethash hash-code *quark-from-object*)
 127              (assoc-delete object (gethash hash-code *quark-from-object*)))
 128       (remhash hash-code *quark-from-object*))))
 129
 130
 131
 132 ;;;; Linked list (GList)
 133
 134 (deftype glist (type)
 135   `(or (null (cons ,type list))))
 136
 137 (defbinding (%glist-append "g_list_append") () pointer
 138   (glist pointer)
 139   (nil null))
 140
 141 (defun make-glist (type list)
 142   (loop
 143    with writer = (writer-function type)
 144    for element in list
 145    as glist = (%glist-append (or glist (make-pointer 0)))
 146    do (funcall writer element glist)
 147    finally (return glist)))
 148
 149 (defun glist-next (glist)
 150   (unless (null-pointer-p glist)
 151     (sap-ref-sap glist +size-of-pointer+)))
 152
 153 ;; Also used for gslists
 154 (defun map-glist (seqtype function glist element-type)
 155   (let ((reader (reader-function element-type)))
 156     (case seqtype
 157      ((nil)
 158       (loop
 159        as tmp = glist then (glist-next tmp)
 160        until (null-pointer-p tmp)
 161        do (funcall function (funcall reader tmp))))
 162      (list
 163       (loop
 164        as tmp = glist then (glist-next tmp)
 165        until (null-pointer-p tmp)
 166        collect (funcall function (funcall reader tmp))))
 167      (t
 168       (coerce
 169        (loop
 170         as tmp = glist then (glist-next tmp)
 171         until (null-pointer-p tmp)
 172         collect (funcall function (funcall reader tmp)))
 173        seqtype)))))
 174
 175 (defbinding (glist-free "g_list_free") () nil
 176   (glist pointer))
 177
 178 (defun destroy-glist (glist element-type)
 179   (loop
 180    with destroy = (destroy-function element-type)
 181    as tmp = glist then (glist-next tmp)
 182    until (null-pointer-p tmp)
 183    do (funcall destroy tmp 0))
 184   (glist-free glist))
 185
 186 (defmethod alien-type ((type (eql 'glist)) &rest args)
 187   (declare (ignore type args))
 188   (alien-type 'pointer))
 189
 190 (defmethod size-of ((type (eql 'glist)) &rest args)
 191   (declare (ignore type args))
 192   (size-of 'pointer))
 193
 194 (defmethod to-alien-form (list (type (eql 'glist)) &rest args)
 195   (declare (ignore type))
 196   (destructuring-bind (element-type) args
 197     `(make-glist ',element-type ,list)))
 198
 199 (defmethod to-alien-function ((type (eql 'glist)) &rest args)
 200   (declare (ignore type))
 201   (destructuring-bind (element-type) args
 202     #'(lambda (list)
 203         (make-glist element-type list))))
 204
 205 (defmethod from-alien-form (glist (type (eql 'glist)) &rest args)
 206   (declare (ignore type))
 207   (destructuring-bind (element-type) args
 208     `(let ((glist ,glist))
 209       (unwind-protect
 210            (map-glist 'list #'identity glist ',element-type)
 211         (destroy-glist glist ',element-type)))))
 212
 213 (defmethod from-alien-function ((type (eql 'glist)) &rest args)
 214   (declare (ignore type))
 215   (destructuring-bind (element-type) args
 216     #'(lambda (glist)
 217         (unwind-protect
 218              (map-glist 'list #'identity glist element-type)
 219           (destroy-glist glist element-type)))))
 220
 221 (defmethod copy-from-alien-form (glist (type (eql 'glist)) &rest args)
 222   (declare (ignore type))
 223   (destructuring-bind (element-type) args
 224     `(map-glist 'list #'identity ,glist ',element-type)))
 225
 226 (defmethod copy-from-alien-function ((type (eql 'glist)) &rest args)
 227   (declare (ignore type))
 228   (destructuring-bind (element-type) args
 229     #'(lambda (glist)
 230         (map-glist 'list #'identity glist element-type))))
 231
 232 (defmethod cleanup-form (glist (type (eql 'glist)) &rest args)
 233   (declare (ignore type))
 234   (destructuring-bind (element-type) args
 235     `(destroy-glist ,glist ',element-type)))
 236
 237 (defmethod cleanup-function ((type (eql 'glist)) &rest args)
 238   (declare (ignore type))
 239   (destructuring-bind (element-type) args
 240     #'(lambda (glist)
 241         (destroy-glist glist element-type))))
 242
 243 (defmethod writer-function ((type (eql 'glist)) &rest args)
 244   (declare (ignore type))
 245   (destructuring-bind (element-type) args
 246     #'(lambda (list location &optional (offset 0))
 247         (setf
 248          (sap-ref-sap location offset)
 249          (make-glist element-type list)))))
 250
 251 (defmethod reader-function ((type (eql 'glist)) &rest args)
 252   (declare (ignore type))
 253   (destructuring-bind (element-type) args
 254     #'(lambda (location &optional (offset 0))
 255         (unless (null-pointer-p (sap-ref-sap location offset))
 256           (map-glist 'list #'identity (sap-ref-sap location offset) element-type)))))
 257
 258 (defmethod destroy-function ((type (eql 'glist)) &rest args)
 259   (declare (ignore type))
 260   (destructuring-bind (element-type) args
 261     #'(lambda (location &optional (offset 0))
 262         (unless (null-pointer-p (sap-ref-sap location offset))
 263           (destroy-glist (sap-ref-sap location offset) element-type)
 264           (setf (sap-ref-sap location offset) (make-pointer 0))))))
 265
 266
 267
 268 ;;;; Single linked list (GSList)
 269
 270 (deftype gslist (type) `(or (null (cons ,type list))))
 271
 272 (defbinding (%gslist-prepend "g_slist_prepend") () pointer
 273   (gslist pointer)
 274   (nil null))
 275
 276 (defun make-gslist (type list)
 277   (loop
 278    with writer = (writer-function type)
 279    for element in (reverse list)
 280    as gslist = (%gslist-prepend (or gslist (make-pointer 0)))
 281    do (funcall writer element gslist)
 282    finally (return gslist)))
 283
 284 (defbinding (gslist-free "g_slist_free") () nil
 285   (gslist pointer))
 286
 287 (defun destroy-gslist (gslist element-type)
 288   (loop
 289    with destroy = (destroy-function element-type)
 290    as tmp = gslist then (glist-next tmp)
 291    until (null-pointer-p tmp)
 292    do (funcall destroy tmp 0))
 293   (gslist-free gslist))
 294
 295 (defmethod alien-type ((type (eql 'gslist)) &rest args)
 296   (declare (ignore type args))
 297   (alien-type 'pointer))
 298
 299 (defmethod size-of ((type (eql 'gslist)) &rest args)
 300   (declare (ignore type args))
 301   (size-of 'pointer))
 302
 303 (defmethod to-alien-form (list (type (eql 'gslist)) &rest args)
 304   (declare (ignore type))
 305   (destructuring-bind (element-type) args
 306     `(make-sglist ',element-type ,list)))
 307
 308 (defmethod to-alien-function ((type (eql 'gslist)) &rest args)
 309   (declare (ignore type))
 310   (destructuring-bind (element-type) args
 311     #'(lambda (list)
 312         (make-gslist element-type list))))
 313
 314 (defmethod from-alien-form (gslist (type (eql 'gslist)) &rest args)
 315   (declare (ignore type))
 316   (destructuring-bind (element-type) args
 317     `(let ((gslist ,gslist))
 318       (unwind-protect
 319            (map-glist 'list #'identity gslist ',element-type)
 320         (destroy-gslist gslist ',element-type)))))
 321
 322 (defmethod from-alien-function ((type (eql 'gslist)) &rest args)
 323   (declare (ignore type))
 324   (destructuring-bind (element-type) args
 325     #'(lambda (gslist)
 326         (unwind-protect
 327              (map-glist 'list #'identity gslist element-type)
 328           (destroy-gslist gslist element-type)))))
 329
 330 (defmethod copy-from-alien-form (gslist (type (eql 'gslist)) &rest args)
 331   (declare (ignore type))
 332   (destructuring-bind (element-type) args
 333     `(map-glist 'list #'identity ,gslist ',element-type)))
 334
 335 (defmethod from-alien-function ((type (eql 'gslist)) &rest args)
 336   (declare (ignore type))
 337   (destructuring-bind (element-type) args
 338     #'(lambda (gslist)
 339         (map-glist 'list #'identity gslist element-type))))
 340
 341 (defmethod cleanup-form (gslist (type (eql 'gslist)) &rest args)
 342   (declare (ignore type))
 343   (destructuring-bind (element-type) args
 344     `(destroy-gslist ,gslist ',element-type)))
 345
 346 (defmethod cleanup-function ((type (eql 'gslist)) &rest args)
 347   (declare (ignore type))
 348   (destructuring-bind (element-type) args
 349     #'(lambda (gslist)
 350         (destroy-gslist gslist element-type))))
 351
 352 (defmethod writer-function ((type (eql 'gslist)) &rest args)
 353   (declare (ignore type))
 354   (destructuring-bind (element-type) args
 355     #'(lambda (list location &optional (offset 0))
 356         (setf
 357          (sap-ref-sap location offset)
 358          (make-gslist element-type list)))))
 359
 360 (defmethod reader-function ((type (eql 'gslist)) &rest args)
 361   (declare (ignore type))
 362   (destructuring-bind (element-type) args
 363     #'(lambda (location &optional (offset 0))
 364         (unless (null-pointer-p (sap-ref-sap location offset))
 365           (map-glist 'list #'identity (sap-ref-sap location offset) element-type)))))
 366
 367 (defmethod destroy-function ((type (eql 'gslist)) &rest args)
 368   (declare (ignore type))
 369   (destructuring-bind (element-type) args
 370     #'(lambda (location &optional (offset 0))
 371         (unless (null-pointer-p (sap-ref-sap location offset))
 372           (destroy-gslist (sap-ref-sap location offset) element-type)
 373           (setf (sap-ref-sap location offset) (make-pointer 0))))))
 374
 375
 376 ;;; Vector
 377
 378 (defun make-c-vector (type length &optional content location)
 379   (let* ((size-of-type (size-of type))
 380          (location (or location (allocate-memory (* size-of-type length))))
 381          (writer (writer-function type)))
 382     (etypecase content
 383       (vector
 384        (loop
 385         for element across content
 386         for i from 0 below length
 387         as offset = 0 then (+ offset size-of-type)
 388         do (funcall writer element location offset)))
 389       (list
 390        (loop
 391         for element in content
 392         for i from 0 below length
 393         as offset = 0 then (+ offset size-of-type)
 394         do (funcall writer element location offset))))
 395     location))
 396
 397
 398 (defun map-c-vector (seqtype function location element-type length)
 399   (let ((reader (reader-function element-type))
 400         (size-of-element (size-of element-type)))
 401     (case seqtype
 402      ((nil)
 403       (loop
 404        for i from 0 below length
 405        as offset = 0 then (+ offset size-of-element)
 406        do (funcall function (funcall reader location offset))))
 407      (list
 408       (loop
 409        for i from 0 below length
 410        as offset = 0 then (+ offset size-of-element)
 411        collect (funcall function (funcall reader location offset))))
 412      (t
 413       (loop
 414        with sequence = (make-sequence seqtype length)
 415        for i from 0 below length
 416        as offset = 0 then (+ offset size-of-element)
 417        do (setf
 418            (elt sequence i)
 419            (funcall function (funcall reader location offset)))
 420        finally (return sequence))))))
 421
 422
 423 (defun destroy-c-vector (location element-type length)
 424   (loop
 425    with destroy = (destroy-function element-type)
 426    with element-size = (size-of element-type)
 427    for i from 0 below length
 428    as offset = 0 then (+ offset element-size)
 429    do (funcall destroy location offset))
 430   (deallocate-memory location))
 431
 432
 433 (defmethod alien-type ((type (eql 'vector)) &rest args)
 434   (declare (ignore type args))
 435   (alien-type 'pointer))
 436
 437 (defmethod size-of ((type (eql 'vector)) &rest args)
 438   (declare (ignore type args))
 439   (size-of 'pointer))
 440
 441 (defmethod to-alien-form (vector (type (eql 'vector)) &rest args)
 442   (declare (ignore type))
 443   (destructuring-bind (element-type &optional (length '*)) args
 444     (if (eq length '*)
 445         `(let* ((vector ,vector)
 446                 (location (sap+
 447                            (allocate-memory (+ ,+size-of-int+
 448                                                (* ,(size-of element-type)
 449                                                   (length vector))))
 450                            ,+size-of-int+)))
 451           (make-c-vector ',element-type (length vector) vector location)
 452           (setf (sap-ref-32 location ,(- +size-of-int+)) (length vector))
 453           location)
 454       `(make-c-vector ',element-type ,length ,vector))))
 455
 456 (defmethod from-alien-form (c-vector (type (eql 'vector)) &rest args)
 457   (declare (ignore type))
 458   (destructuring-bind (element-type &optional (length '*)) args
 459     (if (eq length '*)
 460         (error "Can't use vector of variable size as return type")
 461       `(let ((c-vector ,c-vector))
 462         (prog1
 463             (map-c-vector 'vector #'identity c-vector ',element-type ,length)
 464           (destroy-c-vector c-vector ',element-type ,length))))))
 465
 466 (defmethod copy-from-alien-form (c-vector (type (eql 'vector)) &rest args)
 467   (declare (ignore type))
 468   (destructuring-bind (element-type &optional (length '*)) args
 469     (if (eq length '*)
 470         (error "Can't use vector of variable size as return type")
 471       `(map-c-vector 'vector #'identity ,c-vector ',element-type ',length))))
 472
 473 (defmethod cleanup-form (location (type (eql 'vector)) &rest args)
 474   (declare (ignore type))
 475   (destructuring-bind (element-type &optional (length '*)) args
 476     `(let* ((location ,location)
 477             (length ,(if (eq length '*)
 478                          `(sap-ref-32 location ,(- +size-of-int+))
 479                          length)))
 480       (loop
 481        with destroy = (destroy-function ',element-type)
 482        for i from 0 below length
 483        as offset = 0 then (+ offset ,(size-of element-type))
 484        do (funcall destroy location offset))
 485       (deallocate-memory ,(if (eq length '*)
 486                               `(sap+ location  ,(- +size-of-int+))
 487                             'location)))))
 488
 489 (defmethod writer-function ((type (eql 'vector)) &rest args)
 490   (declare (ignore type))
 491   (destructuring-bind (element-type &optional (length '*)) args
 492     #'(lambda (vector location &optional (offset 0))
 493         (setf
 494          (sap-ref-sap location offset)
 495          (make-c-vector element-type length vector)))))
 496
 497 (defmethod reader-function ((type (eql 'vector)) &rest args)
 498   (declare (ignore type))
 499   (destructuring-bind (element-type &optional (length '*)) args
 500     (if (eq length '*)
 501         (error "Can't create reader function for vector of variable size")
 502       #'(lambda (location &optional (offset 0))
 503           (unless (null-pointer-p (sap-ref-sap location offset))
 504             (map-c-vector 'vector #'identity (sap-ref-sap location offset)
 505              element-type length))))))
 506
 507 (defmethod destroy-function ((type (eql 'vector)) &rest args)
 508   (declare (ignore type))
 509   (destructuring-bind (element-type &optional (length '*)) args
 510     (if (eq length '*)
 511         (error "Can't create destroy function for vector of variable size")
 512       #'(lambda (location &optional (offset 0))
 513           (unless (null-pointer-p (sap-ref-sap location offset))
 514             (destroy-c-vector
 515              (sap-ref-sap location offset) element-type length)
 516             (setf (sap-ref-sap location offset) (make-pointer 0)))))))