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 1.22 2004-12-26 11:40:58 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 destroy-user-data (id)
  68   (check-type id fixnum)
  69   (let ((user-data (gethash id *user-data*)))
  70     (when (cdr user-data)
  71       (funcall (cdr user-data) (car user-data))))
  72   (remhash id *user-data*))
  73
  74
  75 ;;;; Quarks
  76
  77 (internal *quark-counter* *quark-from-object* *quark-to-object*)
  78
  79 (deftype quark () 'unsigned)
  80
  81 ;(defbinding %quark-get-reserved () quark)
  82
  83 (defbinding %quark-from-string () quark
  84   (string string))
  85
  86 (defvar *quark-counter* 0)
  87
  88 (defun %quark-get-reserved ()
  89   ;; The string is just a dummy
  90   (%quark-from-string (format nil "#@£$%&-quark-~D" (incf *quark-counter*))))
  91
  92 (defvar *quark-from-object* (make-hash-table))
  93 (defvar *quark-to-object* (make-hash-table))
  94
  95 (defun quark-from-object (object &key (test #'eq))
  96   (let ((hash-code (sxhash object)))
  97     (or
  98      (assoc-ref object (gethash hash-code *quark-from-object*) :test test)
  99      (let ((quark (%quark-get-reserved)))
 100        (setf
 101         (gethash hash-code *quark-from-object*)
 102         (append
 103          (gethash hash-code *quark-from-object*)
 104          (list (cons object quark))))
 105        (setf (gethash quark *quark-to-object*) object)
 106        quark))))
 107
 108 (defun quark-to-object (quark)
 109   (gethash quark *quark-to-object*))
 110
 111 (defun remove-quark (quark)
 112   (let* ((object (gethash quark *quark-to-object*))
 113          (hash-code (sxhash object)))
 114     (remhash quark *quark-to-object*)
 115     (unless (setf
 116              (gethash hash-code *quark-from-object*)
 117              (assoc-delete object (gethash hash-code *quark-from-object*)))
 118       (remhash hash-code *quark-from-object*))))
 119
 120
 121
 122 ;;;; Linked list (GList)
 123
 124 (deftype glist (type)
 125   `(or (null (cons ,type list))))
 126
 127 (defbinding (%glist-append "g_list_append") () pointer
 128   (glist pointer)
 129   (nil null))
 130
 131 (defun make-glist (type list)
 132   (loop
 133    with writer = (writer-function type)
 134    for element in list
 135    as glist = (%glist-append (or glist (make-pointer 0)))
 136    do (funcall writer element glist)
 137    finally (return glist)))
 138
 139 (defun glist-next (glist)
 140   (unless (null-pointer-p glist)
 141     (sap-ref-sap glist +size-of-pointer+)))
 142
 143 ;; Also used for gslists
 144 (defun map-glist (seqtype function glist element-type)
 145   (let ((reader (reader-function element-type)))
 146     (case seqtype
 147      ((nil)
 148       (loop
 149        as tmp = glist then (glist-next tmp)
 150        until (null-pointer-p tmp)
 151        do (funcall function (funcall reader tmp))))
 152      (list
 153       (loop
 154        as tmp = glist then (glist-next tmp)
 155        until (null-pointer-p tmp)
 156        collect (funcall function (funcall reader tmp))))
 157      (t
 158       (coerce
 159        (loop
 160         as tmp = glist then (glist-next tmp)
 161         until (null-pointer-p tmp)
 162         collect (funcall function (funcall reader tmp)))
 163        seqtype)))))
 164
 165 (defbinding (glist-free "g_list_free") () nil
 166   (glist pointer))
 167
 168 (defun destroy-glist (glist element-type)
 169   (loop
 170    with destroy = (destroy-function element-type)
 171    as tmp = glist then (glist-next tmp)
 172    until (null-pointer-p tmp)
 173    do (funcall destroy tmp 0))
 174   (glist-free glist))
 175
 176 (defmethod alien-type ((type (eql 'glist)) &rest args)
 177   (declare (ignore type args))
 178   (alien-type 'pointer))
 179
 180 (defmethod size-of ((type (eql 'glist)) &rest args)
 181   (declare (ignore type args))
 182   (size-of 'pointer))
 183
 184 (defmethod to-alien-form (list (type (eql 'glist)) &rest args)
 185   (declare (ignore type))
 186   (destructuring-bind (element-type) args
 187     `(make-glist ',element-type ,list)))
 188
 189 (defmethod to-alien-function ((type (eql 'glist)) &rest args)
 190   (declare (ignore type))
 191   (destructuring-bind (element-type) args
 192     #'(lambda (list)
 193         (make-glist element-type list))))
 194
 195 (defmethod from-alien-form (glist (type (eql 'glist)) &rest args)
 196   (declare (ignore type))
 197   (destructuring-bind (element-type) args
 198     `(let ((glist ,glist))
 199       (unwind-protect
 200            (map-glist 'list #'identity glist ',element-type)
 201         (destroy-glist glist ',element-type)))))
 202
 203 (defmethod from-alien-function ((type (eql 'glist)) &rest args)
 204   (declare (ignore type))
 205   (destructuring-bind (element-type) args
 206     #'(lambda (glist)
 207         (unwind-protect
 208              (map-glist 'list #'identity glist element-type)
 209           (destroy-glist glist element-type)))))
 210
 211 (defmethod copy-from-alien-form (glist (type (eql 'glist)) &rest args)
 212   (declare (ignore type))
 213   (destructuring-bind (element-type) args
 214     `(map-glist 'list #'identity ,glist ',element-type)))
 215
 216 (defmethod copy-from-alien-function ((type (eql 'glist)) &rest args)
 217   (declare (ignore type))
 218   (destructuring-bind (element-type) args
 219     #'(lambda (glist)
 220         (map-glist 'list #'identity glist element-type))))
 221
 222 (defmethod cleanup-form (glist (type (eql 'glist)) &rest args)
 223   (declare (ignore type))
 224   (destructuring-bind (element-type) args
 225     `(destroy-glist ,glist ',element-type)))
 226
 227 (defmethod cleanup-function ((type (eql 'glist)) &rest args)
 228   (declare (ignore type))
 229   (destructuring-bind (element-type) args
 230     #'(lambda (glist)
 231         (destroy-glist glist element-type))))
 232
 233 (defmethod writer-function ((type (eql 'glist)) &rest args)
 234   (declare (ignore type))
 235   (destructuring-bind (element-type) args
 236     #'(lambda (list location &optional (offset 0))
 237         (setf
 238          (sap-ref-sap location offset)
 239          (make-glist element-type list)))))
 240
 241 (defmethod reader-function ((type (eql 'glist)) &rest args)
 242   (declare (ignore type))
 243   (destructuring-bind (element-type) args
 244     #'(lambda (location &optional (offset 0))
 245         (unless (null-pointer-p (sap-ref-sap location offset))
 246           (map-glist 'list #'identity (sap-ref-sap location offset) element-type)))))
 247
 248 (defmethod destroy-function ((type (eql 'glist)) &rest args)
 249   (declare (ignore type))
 250   (destructuring-bind (element-type) args
 251     #'(lambda (location &optional (offset 0))
 252         (unless (null-pointer-p (sap-ref-sap location offset))
 253           (destroy-glist (sap-ref-sap location offset) element-type)
 254           (setf (sap-ref-sap location offset) (make-pointer 0))))))
 255
 256
 257
 258 ;;;; Single linked list (GSList)
 259
 260 (deftype gslist (type) `(or (null (cons ,type list))))
 261
 262 (defbinding (%gslist-prepend "g_slist_prepend") () pointer
 263   (gslist pointer)
 264   (nil null))
 265
 266 (defun make-gslist (type list)
 267   (loop
 268    with writer = (writer-function type)
 269    for element in (reverse list)
 270    as gslist = (%gslist-prepend (or gslist (make-pointer 0)))
 271    do (funcall writer element gslist)
 272    finally (return gslist)))
 273
 274 (defbinding (gslist-free "g_slist_free") () nil
 275   (gslist pointer))
 276
 277 (defun destroy-gslist (gslist element-type)
 278   (loop
 279    with destroy = (destroy-function element-type)
 280    as tmp = gslist then (glist-next tmp)
 281    until (null-pointer-p tmp)
 282    do (funcall destroy tmp 0))
 283   (gslist-free gslist))
 284
 285 (defmethod alien-type ((type (eql 'gslist)) &rest args)
 286   (declare (ignore type args))
 287   (alien-type 'pointer))
 288
 289 (defmethod size-of ((type (eql 'gslist)) &rest args)
 290   (declare (ignore type args))
 291   (size-of 'pointer))
 292
 293 (defmethod to-alien-form (list (type (eql 'gslist)) &rest args)
 294   (declare (ignore type))
 295   (destructuring-bind (element-type) args
 296     `(make-sglist ',element-type ,list)))
 297
 298 (defmethod to-alien-function ((type (eql 'gslist)) &rest args)
 299   (declare (ignore type))
 300   (destructuring-bind (element-type) args
 301     #'(lambda (list)
 302         (make-gslist element-type list))))
 303
 304 (defmethod from-alien-form (gslist (type (eql 'gslist)) &rest args)
 305   (declare (ignore type))
 306   (destructuring-bind (element-type) args
 307     `(let ((gslist ,gslist))
 308       (unwind-protect
 309            (map-glist 'list #'identity gslist ',element-type)
 310         (destroy-gslist gslist ',element-type)))))
 311
 312 (defmethod from-alien-function ((type (eql 'gslist)) &rest args)
 313   (declare (ignore type))
 314   (destructuring-bind (element-type) args
 315     #'(lambda (gslist)
 316         (unwind-protect
 317              (map-glist 'list #'identity gslist element-type)
 318           (destroy-gslist gslist element-type)))))
 319
 320 (defmethod copy-from-alien-form (gslist (type (eql 'gslist)) &rest args)
 321   (declare (ignore type))
 322   (destructuring-bind (element-type) args
 323     `(map-glist 'list #'identity ,gslist ',element-type)))
 324
 325 (defmethod from-alien-function ((type (eql 'gslist)) &rest args)
 326   (declare (ignore type))
 327   (destructuring-bind (element-type) args
 328     #'(lambda (gslist)
 329         (map-glist 'list #'identity gslist element-type))))
 330
 331 (defmethod cleanup-form (gslist (type (eql 'gslist)) &rest args)
 332   (declare (ignore type))
 333   (destructuring-bind (element-type) args
 334     `(destroy-gslist ,gslist ',element-type)))
 335
 336 (defmethod cleanup-function ((type (eql 'gslist)) &rest args)
 337   (declare (ignore type))
 338   (destructuring-bind (element-type) args
 339     #'(lambda (gslist)
 340         (destroy-gslist gslist element-type))))
 341
 342 (defmethod writer-function ((type (eql 'gslist)) &rest args)
 343   (declare (ignore type))
 344   (destructuring-bind (element-type) args
 345     #'(lambda (list location &optional (offset 0))
 346         (setf
 347          (sap-ref-sap location offset)
 348          (make-gslist element-type list)))))
 349
 350 (defmethod reader-function ((type (eql 'gslist)) &rest args)
 351   (declare (ignore type))
 352   (destructuring-bind (element-type) args
 353     #'(lambda (location &optional (offset 0))
 354         (unless (null-pointer-p (sap-ref-sap location offset))
 355           (map-glist 'list #'identity (sap-ref-sap location offset) element-type)))))
 356
 357 (defmethod destroy-function ((type (eql 'gslist)) &rest args)
 358   (declare (ignore type))
 359   (destructuring-bind (element-type) args
 360     #'(lambda (location &optional (offset 0))
 361         (unless (null-pointer-p (sap-ref-sap location offset))
 362           (destroy-gslist (sap-ref-sap location offset) element-type)
 363           (setf (sap-ref-sap location offset) (make-pointer 0))))))
 364
 365
 366 ;;; Vector
 367
 368 (defun make-c-vector (type length &optional content location)
 369   (let* ((size-of-type (size-of type))
 370          (location (or location (allocate-memory (* size-of-type length))))
 371          (writer (writer-function type)))
 372     (etypecase content
 373       (vector
 374        (loop
 375         for element across content
 376         for i from 0 below length
 377         as offset = 0 then (+ offset size-of-type)
 378         do (funcall writer element location offset)))
 379       (list
 380        (loop
 381         for element in content
 382         for i from 0 below length
 383         as offset = 0 then (+ offset size-of-type)
 384         do (funcall writer element location offset))))
 385     location))
 386
 387
 388 (defun map-c-vector (seqtype function location element-type length)
 389   (let ((reader (reader-function element-type))
 390         (size-of-element (size-of element-type)))
 391     (case seqtype
 392      ((nil)
 393       (loop
 394        for i from 0 below length
 395        as offset = 0 then (+ offset size-of-element)
 396        do (funcall function (funcall reader location offset))))
 397      (list
 398       (loop
 399        for i from 0 below length
 400        as offset = 0 then (+ offset size-of-element)
 401        collect (funcall function (funcall reader location offset))))
 402      (t
 403       (loop
 404        with sequence = (make-sequence seqtype length)
 405        for i from 0 below length
 406        as offset = 0 then (+ offset size-of-element)
 407        do (setf
 408            (elt sequence i)
 409            (funcall function (funcall reader location offset)))
 410        finally (return sequence))))))
 411
 412
 413 (defun destroy-c-vector (location element-type length)
 414   (loop
 415    with destroy = (destroy-function element-type)
 416    with element-size = (size-of element-type)
 417    for i from 0 below length
 418    as offset = 0 then (+ offset element-size)
 419    do (funcall destroy location offset))
 420   (deallocate-memory location))
 421
 422
 423 (defmethod alien-type ((type (eql 'vector)) &rest args)
 424   (declare (ignore type args))
 425   (alien-type 'pointer))
 426
 427 (defmethod size-of ((type (eql 'vector)) &rest args)
 428   (declare (ignore type args))
 429   (size-of 'pointer))
 430
 431 (defmethod to-alien-form (vector (type (eql 'vector)) &rest args)
 432   (declare (ignore type))
 433   (destructuring-bind (element-type &optional (length '*)) args
 434     (if (eq length '*)
 435         `(let* ((vector ,vector)
 436                 (location (sap+
 437                            (allocate-memory (+ ,+size-of-int+
 438                                                (* ,(size-of element-type)
 439                                                   (length vector))))
 440                            ,+size-of-int+)))
 441           (make-c-vector ',element-type (length vector) vector location)
 442           (setf (sap-ref-32 location ,(- +size-of-int+)) (length vector))
 443           location)
 444       `(make-c-vector ',element-type ,length ,vector))))
 445
 446 (defmethod from-alien-form (c-vector (type (eql 'vector)) &rest args)
 447   (declare (ignore type))
 448   (destructuring-bind (element-type &optional (length '*)) args
 449     (if (eq length '*)
 450         (error "Can't use vector of variable size as return type")
 451       `(let ((c-vector ,c-vector))
 452         (prog1
 453             (map-c-vector 'vector #'identity ',element-type ,length c-vector)
 454           (destroy-c-vector c-vector ',element-type ,length))))))
 455
 456 (defmethod copy-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       `(map-c-vector 'vector #'identity ',element-type ',length ,c-vector))))
 462
 463 (defmethod cleanup-form (location (type (eql 'vector)) &rest args)
 464   (declare (ignore type))
 465   (destructuring-bind (element-type &optional (length '*)) args
 466     `(let* ((location ,location)
 467             (length ,(if (eq length '*)
 468                          `(sap-ref-32 location ,(- +size-of-int+))
 469                          length)))
 470       (loop
 471        with destroy = (destroy-function ',element-type)
 472        for i from 0 below length
 473        as offset = 0 then (+ offset ,(size-of element-type))
 474        do (funcall destroy location offset))
 475       (deallocate-memory ,(if (eq length '*)
 476                               `(sap+ location  ,(- +size-of-int+))
 477                             'location)))))
 478
 479 (defmethod writer-function ((type (eql 'vector)) &rest args)
 480   (declare (ignore type))
 481   (destructuring-bind (element-type &optional (length '*)) args
 482     #'(lambda (vector location &optional (offset 0))
 483         (setf
 484          (sap-ref-sap location offset)
 485          (make-c-vector element-type length vector)))))
 486
 487 (defmethod reader-function ((type (eql 'vector)) &rest args)
 488   (declare (ignore type))
 489   (destructuring-bind (element-type &optional (length '*)) args
 490     (if (eq length '*)
 491         (error "Can't create reader function for vector of variable size")
 492       #'(lambda (location &optional (offset 0))
 493           (unless (null-pointer-p (sap-ref-sap location offset))
 494             (map-c-vector 'vector #'identity (sap-ref-sap location offset)
 495              element-type length))))))
 496
 497 (defmethod destroy-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 destroy function for vector of variable size")
 502       #'(lambda (location &optional (offset 0))
 503           (unless (null-pointer-p (sap-ref-sap location offset))
 504             (destroy-c-vector
 505              (sap-ref-sap location offset) element-type length)
 506             (setf (sap-ref-sap location offset) (make-pointer 0)))))))