1 ;; Common Lisp bindings for GTK+ v2.x
2 ;; Copyright 2000-2005 Espen S. Johnsen <espen@users.sf.net>
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:
12 ;; The above copyright notice and this permission notice shall be
13 ;; included in all copies or substantial portions of the Software.
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.
23 ;; $Id: gtype.lisp,v 1.40 2006-02-06 11:52:24 espen Exp $
29 ;; Initialize the glib type system
30 (defbinding type-init () nil)
33 (deftype type-number () '(unsigned 32))
35 (deftype gtype () 'symbol)
37 (defmethod alien-type ((type (eql 'gtype)) &rest args)
38 (declare (ignore type args))
39 (alien-type 'type-number))
41 (defmethod size-of ((type (eql 'gtype)) &rest args)
42 (declare (ignore type args))
43 (size-of 'type-number))
45 (defmethod to-alien-form (gtype (type (eql 'gtype)) &rest args)
46 (declare (ignore type args))
47 `(find-type-number ,gtype t))
49 (defmethod to-alien-function ((type (eql 'gtype)) &rest args)
50 (declare (ignore type args))
52 (find-type-number gtype t)))
54 (defmethod from-alien-form (type-number (type (eql 'gtype)) &rest args)
55 (declare (ignore type args))
56 `(type-from-number ,type-number))
58 (defmethod from-alien-function ((type (eql 'gtype)) &rest args)
59 (declare (ignore type args))
60 #'(lambda (type-number)
61 (type-from-number type-number)))
63 (defmethod writer-function ((type (eql 'gtype)) &rest args)
64 (declare (ignore type args))
65 (let ((writer (writer-function 'type-number)))
66 #'(lambda (gtype location &optional (offset 0))
67 (funcall writer (find-type-number gtype t) location offset))))
69 (defmethod reader-function ((type (eql 'gtype)) &rest args)
70 (declare (ignore type args))
71 (let ((reader (reader-function 'type-number)))
72 #'(lambda (location &optional (offset 0))
73 (type-from-number (funcall reader location offset)))))
76 (eval-when (:compile-toplevel :load-toplevel :execute)
77 (defclass type-query (struct)
78 ((type-number :allocation :alien :type type-number)
79 (name :allocation :alien :type string)
80 (class-size :allocation :alien :type unsigned-int)
81 (instance-size :allocation :alien :type unsigned-int))
82 (:metaclass struct-class)))
85 (defbinding type-query (type) nil
86 ((find-type-number type t) type-number)
87 ((make-instance 'type-query) type-query :return))
89 (defun type-instance-size (type)
90 (slot-value (type-query type) 'instance-size))
92 (defun type-class-size (type)
93 (slot-value (type-query type) 'class-size))
95 (defbinding type-class-ref (type) pointer
96 ((find-type-number type t) type-number))
98 (defbinding type-class-unref (type) nil
99 ((find-type-number type t) type-number))
101 (defbinding type-class-peek (type) pointer
102 ((find-type-number type t) type-number))
105 ;;;; Mapping between lisp types and glib types
107 (defvar *registered-types* ())
108 (defvar *registered-type-aliases* ())
109 (defvar *lisp-type-to-type-number* (make-hash-table))
110 (defvar *type-number-to-lisp-type* (make-hash-table))
112 (defbinding %type-from-name () type-number
115 (defun type-number-from-glib-name (name &optional (error-p t))
116 (let ((type-number (%type-from-name name)))
118 ((not (zerop type-number)) type-number)
119 (error-p (error "Invalid gtype name: ~A" name)))))
121 (defun register-type (type id)
122 (pushnew (cons type id) *registered-types* :key #'car)
125 (string (type-number-from-glib-name id))
126 (symbol (funcall id)))))
127 (setf (gethash type *lisp-type-to-type-number*) type-number)
128 (setf (gethash type-number *type-number-to-lisp-type*) type)
131 (defun register-type-alias (type alias)
132 (pushnew (cons type alias) *registered-type-aliases* :key #'car)
134 (gethash type *lisp-type-to-type-number*)
135 (find-type-number alias t)))
137 (defun reinitialize-all-types ()
138 (clrhash *lisp-type-to-type-number*)
139 (clrhash *type-number-to-lisp-type*)
140 (type-init) ; initialize the glib type system
141 (mapc #'(lambda (type)
142 (register-type (car type) (cdr type)))
144 (mapc #'(lambda (type)
145 (register-type-alias (car type) (cdr type)))
146 *registered-type-aliases*))
148 (pushnew 'reinitialize-all-types
149 #+cmu *after-save-initializations*
153 (pushnew 'system::reinitialize-global-table ; we shouldn't have to do this?
154 *after-save-initializations*)
157 (defun find-type-number (type &optional error-p)
160 (string (type-number-from-glib-name type error-p))
163 (gethash type *lisp-type-to-type-number*)
164 (and error-p (error "Type not registered: ~A" type))))
165 (class (find-type-number (class-name type) error-p))))
167 (defun type-from-number (type-number &optional error)
168 (multiple-value-bind (type found)
169 (gethash type-number *type-number-to-lisp-type*)
172 (let ((name (find-foreign-type-name type-number)))
174 ((and name (not (= (type-number-from-glib-name name nil) type-number)))
175 ;; This is a hack because GdkEvent seems to be registered
177 (type-from-number (type-number-from-glib-name name)))
179 (error "Type number not registered: ~A (~A)" type-number name))
181 (error "Invalid type number: ~A" type-number)))))))
183 (defbinding (find-foreign-type-name "g_type_name") (type) (copy-of string)
184 ((find-type-number type t) type-number))
186 (defun type-number-of (object)
187 (find-type-number (type-of object) t))
189 (eval-when (:compile-toplevel :load-toplevel :execute)
190 (defvar *type-initializers* ())
191 (defun %find-types-in-library (pathname prefixes ignore)
192 (let ((process (run-program
193 "/usr/bin/nm" (list "--defined-only" "-D" (namestring (truename pathname)))
194 :output :stream :wait nil)))
197 as symbol = (let ((line (read-line (process-output process) nil)))
198 (when line (subseq line 11)))
201 (> (length symbol) 9)
204 (some #'(lambda (prefix)
206 (> (length symbol) (length prefix))
207 (string= prefix symbol :end2 (length prefix))))
209 (string= "_get_type" symbol :start2 (- (length symbol) 9))
210 (not (member symbol ignore :test #'string=)))
212 (process-close process)))))
215 (defmacro init-types-in-library (filename &key prefix ignore)
216 (let ((names (%find-types-in-library filename prefix ignore)))
218 ,@(mapcar #'(lambda (name)
220 (defbinding (,(intern name) ,name) () type-number)
222 (pushnew ',(intern name) *type-initializers*)))
225 (defun find-type-init-function (type-number)
227 for type-init in *type-initializers*
228 when (= type-number (funcall type-init))
229 do (return type-init)))
231 (defun register-type-as (type-number)
233 (find-type-init-function type-number)
234 (find-foreign-type-name type-number)
235 (error "Unknown type-number: ~A" type-number)))
237 (defun default-type-init-name (type)
238 (find-symbol (format nil "~A_~A_get_type"
239 (package-prefix *package*)
240 (substitute #\_ #\- (string-downcase type)))))
243 (eval-when (:compile-toplevel :load-toplevel :execute)
244 (defclass type-info (struct)
245 ((class-size :allocation :alien :type (unsigned 16) :initarg :class-size)
246 (base-init :allocation :alien :type pointer)
247 (base-finalize :allocation :alien :type pointer)
248 (class-init :allocation :alien :type pointer)
249 (class-finalize :allocation :alien :type pointer)
250 (class-data :allocation :alien :type pointer)
251 (instance-size :allocation :alien :type (unsigned 16)
252 :initarg :instance-size)
253 (n-preallocs :allocation :alien :type (unsigned 16))
254 (instance-init :allocation :alien :type pointer)
255 (value-table :allocation :alien :type pointer))
256 (:metaclass struct-class)))
258 (defbinding %type-register-static () type-number
259 (parent-type type-number)
264 (defun register-new-type (type parent &optional foreign-name)
265 (let ((parent-info (type-query parent)))
266 (with-slots ((parent-number type-number) class-size instance-size) parent-info
268 (%type-register-static
270 (or foreign-name (default-alien-type-name type))
271 (make-instance 'type-info :class-size class-size :instance-size instance-size))))
272 (setf (gethash type *lisp-type-to-type-number*) type-number)
273 (setf (gethash type-number *type-number-to-lisp-type*) type)
278 ;;;; Metaclass for subclasses of ginstance
280 (eval-when (:compile-toplevel :load-toplevel :execute)
281 (defclass ginstance-class (proxy-class)
282 ((gtype :initarg :gtype :initform nil :reader ginstance-class-gtype))))
285 (defmethod compute-foreign-size ((class ginstance-class))
286 (type-instance-size (find-type-number (class-name class))))
288 (defmethod finalize-inheritance ((class ginstance-class))
290 (let* ((class-name (class-name class))
291 (super (most-specific-proxy-superclass class))
293 (first (ginstance-class-gtype class))
294 (default-alien-type-name class-name)))
297 (find-type-number class-name)
298 (if (or (symbolp gtype) (type-number-from-glib-name gtype nil))
299 (register-type class-name gtype)
300 (register-new-type class-name (class-name super) gtype)))))
301 (unless (eq (class-name super) (supertype type-number))
302 (warn "~A is the super type for ~A in the gobject type system."
303 (supertype type-number) class-name))))
305 (defmethod validate-superclass ((class ginstance-class) (super standard-class))
306 (subtypep (class-name super) 'ginstance))
309 ;;;; Superclass for wrapping types in the glib type system
311 (eval-when (:compile-toplevel :load-toplevel :execute)
312 (defclass ginstance (proxy)
313 (;(class :allocation :alien :type pointer :offset 0)
315 (:metaclass proxy-class)
316 (:size #.(size-of 'pointer))))
318 (defun %type-number-of-ginstance (location)
319 (let ((class (sap-ref-sap location 0)))
320 (sap-ref-32 class 0)))
322 (defmethod make-proxy-instance :around ((class ginstance-class) location &rest initargs)
323 (declare (ignore class))
324 (let ((class (labels ((find-known-class (type-number)
326 (find-class (type-from-number type-number) nil)
327 (unless (zerop type-number)
328 (find-known-class (type-parent type-number))))))
329 (find-known-class (%type-number-of-ginstance location)))))
330 ;; Note that chancing the class argument must not alter "the
331 ;; ordered set of applicable methods" as specified in the
334 (apply #'call-next-method class location initargs)
335 (error "Object at ~A has an unkown type number: ~A"
336 location (%type-number-of-ginstance location)))))
338 (defmethod make-proxy-instance ((class ginstance-class) location &rest initargs)
339 (declare (ignore initargs))
340 (reference-foreign class location)
341 ;; Since we make an explicit reference to the foreign object, we
342 ;; always have to release it when the proxy is garbage collected
343 ;; and therefor ignore the weak-p argument.
344 (call-next-method class location :weak nil))
346 (defmethod invalidate-instance ((instance ginstance))
347 (declare (ignore instance))
348 ;; A ginstance should never be invalidated since it is ref counted
351 (defmethod copy-from-alien-form (location (class ginstance-class) &rest args)
352 (declare (ignore location class args))
353 (error "Doing copy-from-alien on a ref. counted class is most certainly an error, but if it really is what you want you should use REFERENCE-FOREIGN on the returned instance instead."))
355 (defmethod copy-from-alien-function ((class ginstance-class) &rest args)
356 (declare (ignore class args))
357 (error "Doing copy-from-alien on a ref. counted class is most certainly an error, but if it really is what you want you should use REFERENCE-FOREIGN on the returned instance instead."))
359 (defmethod reader-function ((class ginstance-class) &rest args)
360 (declare (ignore args))
361 #'(lambda (location &optional (offset 0))
362 (ensure-proxy-instance class (sap-ref-sap location offset))))
365 ;;;; Registering fundamental types
367 (register-type 'nil "void")
368 (register-type 'pointer "gpointer")
369 (register-type 'char "gchar")
370 (register-type 'unsigned-char "guchar")
371 (register-type 'boolean "gboolean")
372 (register-type 'int "gint")
373 (register-type-alias 'integer 'int)
374 (register-type-alias 'fixnum 'int)
375 (register-type 'unsigned-int "guint")
376 (register-type 'long "glong")
377 (register-type 'unsigned-long "gulong")
378 (register-type 'single-float "gfloat")
379 (register-type 'double-float "gdouble")
380 (register-type 'pathname "gchararray")
381 (register-type 'string "gchararray")
384 ;;;; Introspection of type information
386 (defvar *derivable-type-info* (make-hash-table))
388 (defun register-derivable-type (type id expander &optional dependencies)
389 (register-type type id)
390 (let ((type-number (register-type type id)))
392 (gethash type-number *derivable-type-info*)
393 (list expander dependencies))))
395 (defun find-type-info (type)
396 (dolist (super (cdr (type-hierarchy type)))
397 (let ((info (gethash super *derivable-type-info*)))
400 (defun expand-type-definition (type forward-p options)
401 (let ((expander (first (find-type-info type))))
402 (funcall expander (find-type-number type t) forward-p options)))
404 (defbinding type-parent (type) type-number
405 ((find-type-number type t) type-number))
407 (defun supertype (type)
408 (type-from-number (type-parent type)))
410 (defbinding %type-interfaces (type) pointer
411 ((find-type-number type t) type-number)
412 (n-interfaces unsigned-int :out))
414 (defun type-interfaces (type)
415 (multiple-value-bind (array length) (%type-interfaces type)
417 (map-c-vector 'list #'identity array 'type-number length)
418 (deallocate-memory array))))
420 (defun implements (type)
421 (mapcar #'type-from-number (type-interfaces type)))
423 (defun type-hierarchy (type)
424 (let ((type-number (find-type-number type t)))
425 (unless (= type-number 0)
426 (cons type-number (type-hierarchy (type-parent type-number))))))
428 (defbinding (type-is-p "g_type_is_a") (type super) boolean
429 ((find-type-number type) type-number)
430 ((find-type-number super) type-number))
432 (defbinding %type-children () pointer
433 (type-number type-number)
434 (num-children unsigned-int :out))
436 (defun map-subtypes (function type &optional prefix)
437 (let ((type-number (find-type-number type t)))
438 (multiple-value-bind (array length) (%type-children type-number)
442 #'(lambda (type-number)
445 (string-prefix-p prefix (find-foreign-type-name type-number)))
446 (funcall function type-number))
447 (map-subtypes function type-number prefix))
448 array 'type-number length)
449 (deallocate-memory array)))))
451 (defun find-types (prefix)
452 (let ((type-list nil))
454 #'(lambda (type-number expander)
455 (declare (ignore expander))
457 #'(lambda (type-number)
458 (pushnew type-number type-list))
460 *derivable-type-info*)
463 (defun find-type-dependencies (type)
464 (let ((list-dependencies (second (find-type-info type))))
465 (when list-dependencies
466 (funcall list-dependencies (find-type-number type t)))))
468 (defun %sort-types-topologicaly (types)
469 (let ((partial-sorted
473 (cons type (remove-if #'(lambda (dep)
474 (not (find dep types)))
475 (find-type-dependencies type))))
477 #'(lambda (type1 type2) (type-is-p type2 type1)) :key #'car))
481 as tmp = partial-sorted then (or (rest tmp) partial-sorted)
483 do (destructuring-bind (type . dependencies) (first tmp)
485 ((every #'(lambda (dep)
488 (push (cons type nil) sorted) ; no forward definition needed
489 (setq partial-sorted (delete type partial-sorted :key #'first)))
490 ((some #'(lambda (dep)
491 (find type (find-type-dependencies dep)))
493 (push (cons type t) sorted) ; forward definition needed
494 (setq partial-sorted (delete type partial-sorted :key #'first))))))
498 (defun expand-type-definitions (prefix &optional args)
499 (flet ((type-options (type-number)
500 (let ((name (find-foreign-type-name type-number)))
501 (cdr (assoc name args :test #'string=)))))
505 #'(lambda (type-number)
506 (let ((name (find-foreign-type-name type-number)))
508 (getf (type-options type-number) :ignore)
512 (string-prefix-p (first options) name)
513 (getf (cdr options) :ignore-prefix)
515 #'(lambda (exception)
516 (string= name exception))
517 (getf (cdr options) :except)))))
519 (find-types prefix))))
521 (dolist (type-number type-list)
522 (let ((name (find-foreign-type-name type-number)))
524 (getf (type-options type-number) :type (default-type-name name))
525 (register-type-as type-number))))
527 (let ((sorted-type-list (%sort-types-topologicaly type-list)))
531 (destructuring-bind (type . forward-p) pair
532 (expand-type-definition type forward-p (type-options type))))
536 (destructuring-bind (type . forward-p) pair
538 (expand-type-definition type nil (type-options type)))))
539 sorted-type-list))))))
541 (defmacro define-types-by-introspection (prefix &rest args)
542 (expand-type-definitions prefix args))
545 ;;;; Initialize all non static types in GObject
547 (init-types-in-library #.(concatenate 'string (pkg-config:pkg-variable "glib-2.0" "libdir") "/libgobject-2.0.so"))