1 ;; Common Lisp bindings for GTK+ v2.x
2 ;; Copyright 2000-2006 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 1.69 2009-02-10 15:16:34 espen Exp $
29 ;; Initialize the glib type system
30 (defbinding type-init () nil)
33 (eval-when (:compile-toplevel :load-toplevel :execute)
34 (defbinding (bitsize-of-gtype "bitsize_of_gtype") () unsigned-int))
36 (deftype type-number () `(unsigned-byte ,(bitsize-of-gtype)))
38 (deftype gtype () 'symbol)
40 (define-type-method alien-type ((type gtype))
41 (declare (ignore type))
42 (alien-type 'type-number))
44 (define-type-method size-of ((type gtype) &key (inlined t))
45 (assert-inlined type inlined)
46 (size-of 'type-number))
48 (define-type-method to-alien-form ((type gtype) gtype &optional copy-p)
49 (declare (ignore type copy-p))
50 `(find-type-number ,gtype t))
52 (define-type-method to-alien-function ((type gtype) &optional copy-p)
53 (declare (ignore type copy-p))
55 (find-type-number gtype t)))
57 (define-type-method from-alien-form ((type gtype) form &key ref)
58 (declare (ignore type ref))
59 `(type-from-number ,form))
61 (define-type-method from-alien-function ((type gtype) &key ref)
62 (declare (ignore type ref))
63 #'(lambda (type-number)
64 (type-from-number type-number)))
66 (define-type-method writer-function ((type gtype) &key temp (inlined t))
67 (declare (ignore temp))
68 (assert-inlined type inlined)
69 (let ((writer (writer-function 'type-number)))
70 #'(lambda (gtype location &optional (offset 0))
71 (funcall writer (find-type-number gtype t) location offset))))
73 (define-type-method reader-function ((type gtype) &key ref (inlined t))
74 (declare (ignore ref))
75 (assert-inlined type inlined)
76 (let ((reader (reader-function 'type-number)))
77 #'(lambda (location &optional (offset 0))
78 (type-from-number (funcall reader location offset)))))
81 (eval-when (:compile-toplevel :load-toplevel :execute)
82 (defclass type-query (struct)
83 ((type-number :allocation :alien :type type-number)
84 (name :allocation :alien :type (copy-of string))
85 (class-size :allocation :alien :type unsigned-int)
86 (instance-size :allocation :alien :type unsigned-int))
87 (:metaclass struct-class)))
90 (defbinding type-query (type) nil
91 ((find-type-number type t) type-number)
92 ((make-instance 'type-query) type-query :in/return))
94 (defun type-instance-size (type)
95 (slot-value (type-query type) 'instance-size))
97 (defun type-class-size (type)
98 (slot-value (type-query type) 'class-size))
100 (defbinding type-class-ref (type) pointer
101 ((find-type-number type t) type-number))
103 (defbinding type-class-unref () nil
106 (defbinding type-class-peek (type) pointer
107 ((find-type-number type t) type-number))
111 ;;;; Mapping between lisp types and glib types
113 (defvar *registered-types* ())
114 (defvar *registered-type-aliases* ())
115 (defvar *registered-static-types* ())
116 (defvar *lisp-type-to-type-number* (make-hash-table))
117 (defvar *type-number-to-lisp-type* (make-hash-table))
119 (defbinding %type-from-name () type-number
122 (defun type-number-from-glib-name (name &optional (error-p t))
123 (let ((type-number (%type-from-name name)))
125 ((not (zerop type-number)) type-number)
126 (error-p (error "Invalid gtype name: ~A" name)))))
128 (defun type-from-glib-name (name)
129 (type-from-number (type-number-from-glib-name name) t))
131 (defun type-registered-p (type)
132 (nth-value 1 (gethash type *lisp-type-to-type-number*)))
134 (defun register-type (type id &optional (error-p t))
136 ((type-registered-p type) (find-type-number type))
137 ((not id) (warn "Can't register type with no foreign id: ~A" type))
139 (pushnew (cons type id) *registered-types* :key #'car)
142 (string (type-number-from-glib-name id error-p))
143 (symbol (funcall id)))))
144 (setf (gethash type *lisp-type-to-type-number*) type-number)
145 (setf (gethash type-number *type-number-to-lisp-type*) type)
148 (defun register-type-alias (type alias)
149 (pushnew (cons type alias) *registered-type-aliases* :key #'car)
151 (gethash type *lisp-type-to-type-number*)
152 (find-type-number alias t)))
154 (defun reinitialize-all-types ()
155 (clrhash *lisp-type-to-type-number*)
156 (clrhash *type-number-to-lisp-type*)
157 (type-init) ; initialize the glib type system
158 (mapc #'(lambda (type)
159 (register-type (car type) (cdr type) nil))
161 (mapc #'(lambda (type)
162 (apply #'register-new-type type))
163 (reverse *registered-static-types*))
164 (mapc #'(lambda (type)
165 (register-type-alias (car type) (cdr type)))
166 *registered-type-aliases*))
169 (asdf:install-init-hook 'system::reinitialize-global-table
170 *after-save-initializations*) ; we shouldn't need to do this?
171 (asdf:install-init-hook 'reinitialize-all-types)
175 (defun find-type-number (type &optional error-p)
178 (string (type-number-from-glib-name type error-p))
181 (gethash type *lisp-type-to-type-number*)
182 (let ((class (find-class type nil)))
183 (when (and class (not (class-finalized-p class)))
184 (finalize-inheritance class)
185 (gethash type *lisp-type-to-type-number*)))
186 (and error-p (error "Type not registered: ~A" type))))
188 (find-type-number (class-name type) error-p))))
190 (defun type-from-number (type-number &optional error)
191 (multiple-value-bind (type found)
192 (gethash type-number *type-number-to-lisp-type*)
195 (let ((name (find-foreign-type-name type-number)))
197 ((and name (not (= (type-number-from-glib-name name nil) type-number)))
198 ;; This is a hack because GdkEvent seems to be registered
200 (type-from-number (type-number-from-glib-name name)))
202 (error "Type number not registered: ~A (~A)" type-number name))
204 (error "Invalid type number: ~A" type-number)))))))
206 (defbinding (find-foreign-type-name "g_type_name") (type) (copy-of string)
207 ((find-type-number type t) type-number))
209 (defun type-number-of (object)
210 (find-type-number (type-of object) t))
212 ;; For #+(SBCL WIN32):
213 ;; The first 2 lines of the output from "pexports" are:
216 ;; We don't do anything to skip these 2 lines because they won't pass the
217 ;; WHEN (AND ...) in the LOOP
220 (eval-when (:compile-toplevel :load-toplevel :execute)
221 (defvar *type-initializers* ())
223 (defun library-filename (system library)
224 (let ((component (asdf:find-component (asdf:find-system system) library)))
227 (first (asdf:output-files (make-instance 'asdf:compile-op) component)))
228 (asdf:library (asdf:component-pathname component)))))
230 (defun %find-types-in-library (pathname prefixes ignore)
231 (let ((outname (tmpname "types")))
233 (let ((asdf::*verbose-out* nil))
235 (asdf:run-shell-command "nm ~A ~A > ~A"
236 #-darwin "--defined-only --dynamic --extern-only"
237 #+darwin "-f -s __TEXT __text"
238 (namestring (truename pathname)) outname)
239 ;; Note about win32 port:
240 ;; 1. (TRUENAME PATHNAME) will bomb.
242 ;; pexports "d:\\whatever\\bin\\zlib1.dll"
244 ;; pexports d:/whatever/bin/zlib1.dll
245 ;; anything else will bomb. this is why ~S is used below.
247 (asdf:run-shell-command "pexports ~S > ~A"
248 (namestring pathname) outname)
250 (with-open-file (output outname)
252 as line = (read-line output nil)
253 as symbol = (when line
255 (let ((pos (position #\space line :from-end t)))
256 #-darwin(subseq line (1+ pos))
258 (when (char= (char line (1- pos)) #\T)
259 (subseq line (+ pos 2))))
261 (subseq line 0 (1- (length line))))
264 symbol (> (length symbol) 9)
265 (not (char= (char symbol 0) #\_))
268 (some #'(lambda (prefix)
270 (> (length symbol) (length prefix))
271 (string= prefix symbol :end2 (length prefix))))
273 (string= "_get_type" symbol :start2 (- (length symbol) 9))
274 (not (member symbol ignore :test #'string=)))
276 (delete-file outname)))))
279 (defun car-eq-p (ob1 ob2)
280 (eq (car ob1) (car ob2)))
282 (defmacro init-types-in-library (system library &key prefix ignore)
283 (let* ((filename (library-filename system library))
284 (names (%find-types-in-library filename prefix ignore)))
289 (defbinding (,(intern name) ,name) () type-number)
291 (pushnew (cons ',(intern name) ,filename) *type-initializers*
295 (defun find-type-init-function (type-number)
297 for (type-init) in *type-initializers*
298 when (= type-number (funcall type-init))
299 do (return type-init)))
301 (defun register-type-as (type-number)
303 (find-type-init-function type-number)
304 (find-foreign-type-name type-number)
305 (error "Unknown type-number: ~A" type-number)))
307 (defun default-type-init-name (type)
308 (find-symbol (format nil "~A_~A_get_type"
309 (package-prefix *package*)
310 (substitute #\_ #\- (string-downcase type)))))
313 (eval-when (:compile-toplevel :load-toplevel :execute)
314 (defclass type-info (struct)
315 ((class-size :allocation :alien :type (unsigned 16) :initarg :class-size)
316 (base-init :allocation :alien :type pointer)
317 (base-finalize :allocation :alien :type pointer)
318 (class-init :allocation :alien :type pointer)
319 (class-finalize :allocation :alien :type pointer)
320 (class-data :allocation :alien :type pointer)
321 (instance-size :allocation :alien :type (unsigned 16)
322 :initarg :instance-size)
323 (n-preallocs :allocation :alien :type (unsigned 16))
324 (instance-init :allocation :alien :type pointer)
325 (value-table :allocation :alien :type pointer))
326 (:metaclass struct-class)))
328 (defbinding %type-register-static () type-number
329 (parent-type type-number)
334 (defun register-new-type (type parent &optional foreign-name)
335 (let ((parent-info (type-query parent)))
336 (with-slots ((parent-number type-number) class-size instance-size) parent-info
338 (%type-register-static
340 (or foreign-name (default-alien-type-name type))
341 (make-instance 'type-info :class-size class-size :instance-size instance-size))))
342 (pushnew (list type parent foreign-name) *registered-static-types* :key #'car)
343 (setf (gethash type *lisp-type-to-type-number*) type-number)
344 (setf (gethash type-number *type-number-to-lisp-type*) type)
349 ;;;; Metaclass for subclasses of ginstance
351 (defvar *referenced-ginstance-classes* ())
353 (eval-when (:compile-toplevel :load-toplevel :execute)
354 (defclass ginstance-class (proxy-class)
355 ((gtype :initarg :gtype :initform nil :reader ginstance-class-gtype))))
358 (defun update-size (class)
359 (let ((type-number (find-type-number class)))
361 ((not (foreign-size-p class))
362 (setf (foreign-size class) (type-instance-size type-number)))
364 (foreign-size-p class)
365 (not (= (type-instance-size type-number) (foreign-size class))))
366 (warn "Size mismatch for class ~A" class)))))
369 (defmethod finalize-inheritance ((class ginstance-class))
371 #+clisp(call-next-method)
372 (let* ((class-name (class-name class))
373 (super (most-specific-proxy-superclass class))
375 (first (ginstance-class-gtype class))
376 (default-alien-type-name class-name))))
377 (unless (type-registered-p class-name)
379 (if (or (symbolp gtype) (type-number-from-glib-name gtype nil))
380 (register-type class-name gtype)
381 (register-new-type class-name (class-name super) gtype)))
382 (push class-name *referenced-ginstance-classes*))
385 (supertype (find-type-number class))
386 (not (eq (class-name super) (supertype (find-type-number class)))))
387 (warn "Super class mismatch between CLOS and GObject for ~A"
390 #-clisp(call-next-method))
392 (defun reinitialize-ginstance-classes ()
393 (mapc #'type-class-ref *referenced-ginstance-classes*))
395 (asdf:install-init-hook 'reinitialize-ginstance-classes)
399 (defmethod shared-initialize ((class ginstance-class) names &rest initargs)
400 (declare (ignore names initargs))
402 (when (class-finalized-p class)
403 (update-size class)))
406 (defmethod validate-superclass ((class ginstance-class) (super standard-class))
407 (subtypep (class-name super) 'ginstance))
410 ;;;; Superclass for wrapping types in the glib type system
412 (eval-when (:compile-toplevel :load-toplevel :execute)
413 (defclass ginstance (ref-counted-object)
414 (;(class :allocation :alien :type pointer :offset 0)
416 (:metaclass proxy-class)
417 (:size #.(size-of 'pointer))))
419 (defun ref-type-number (location &optional offset)
420 (declare (ignore location offset)))
422 (setf (symbol-function 'ref-type-number) (reader-function 'type-number))
424 (defun %type-number-of-ginstance (location)
425 (let ((class (ref-pointer location)))
426 (ref-type-number class)))
428 (defmethod make-proxy-instance :around ((class ginstance-class) location
430 (declare (ignore class))
431 (let ((class (labels ((find-known-class (type-number)
433 (find-class (type-from-number type-number) nil)
434 (unless (zerop type-number)
435 (find-known-class (type-parent type-number))))))
436 (find-known-class (%type-number-of-ginstance location)))))
437 ;; Note that changing the class argument must not alter "the
438 ;; ordered set of applicable methods" as specified in the
441 (apply #'call-next-method class location initargs)
442 (error "Object at ~A has an unkown type number: ~A"
443 location (%type-number-of-ginstance location)))))
446 ;;;; Registering fundamental types
448 (register-type 'nil "void")
449 (register-type 'pointer "gpointer")
450 (register-type 'char "gchar")
451 (register-type 'unsigned-char "guchar")
452 (register-type 'boolean "gboolean")
453 (register-type 'int "gint")
454 (register-type-alias 'integer 'int)
455 (register-type-alias 'fixnum 'int)
456 (register-type 'unsigned-int "guint")
457 (register-type 'long "glong")
458 (register-type 'unsigned-long "gulong")
459 (register-type 'single-float "gfloat")
460 (register-type 'double-float "gdouble")
461 (register-type 'string "gchararray")
462 (register-type-alias 'pathname 'string)
465 ;;;; Introspection of type information
467 (defvar *derivable-type-info* (make-hash-table))
469 (defun register-derivable-type (type id expander &optional dependencies)
470 (register-type type id)
471 (let ((type-number (register-type type id)))
473 (gethash type-number *derivable-type-info*)
474 (list expander dependencies))))
476 (defun find-type-info (type)
477 (dolist (super (cdr (type-hierarchy type)))
478 (let ((info (gethash super *derivable-type-info*)))
481 (defun expand-type-definition (type forward-p options)
482 (let ((expander (first (find-type-info type))))
483 (funcall expander (find-type-number type t) forward-p options)))
486 (defbinding type-parent (type) type-number
487 ((find-type-number type t) type-number))
489 (defun supertype (type)
490 (type-from-number (type-parent type)))
492 (defbinding %type-interfaces (type) pointer
493 ((find-type-number type t) type-number)
494 (n-interfaces unsigned-int :out))
496 (defun type-interfaces (type)
497 (multiple-value-bind (array length) (%type-interfaces type)
499 (map-c-vector 'list #'identity array 'type-number length)
500 (deallocate-memory array))))
502 (defun implements (type)
503 (mapcar #'type-from-number (type-interfaces type)))
505 (defun type-hierarchy (type)
506 (let ((type-number (find-type-number type t)))
507 (unless (= type-number 0)
508 (cons type-number (type-hierarchy (type-parent type-number))))))
510 (defbinding (type-is-p "g_type_is_a") (type super) boolean
511 ((find-type-number type) type-number)
512 ((find-type-number super) type-number))
514 (defbinding %type-children () pointer
515 (type-number type-number)
516 (num-children unsigned-int :out))
518 (defun map-subtypes (function type &optional prefix)
519 (let ((type-number (find-type-number type t)))
520 (multiple-value-bind (array length) (%type-children type-number)
524 #'(lambda (type-number)
527 (string-prefix-p prefix (find-foreign-type-name type-number)))
528 (funcall function type-number))
529 (map-subtypes function type-number prefix))
530 array 'type-number length)
531 (deallocate-memory array)))))
533 (defun find-types (prefix)
534 (let ((type-list nil))
536 #'(lambda (type-number expander)
537 (declare (ignore expander))
539 #'(lambda (type-number)
540 (pushnew type-number type-list))
542 *derivable-type-info*)
545 (defun find-type-dependencies (type &optional options)
546 (let ((find-dependencies (second (find-type-info type))))
547 (when find-dependencies
549 (mapcar #'find-type-number
550 (funcall find-dependencies (find-type-number type t) options))))))
553 ;; The argument is a list where each elements is on the form
554 ;; (type . dependencies). This function will not handle indirect
555 ;; dependencies and types depending on them selves.
556 (defun sort-types-topologicaly (unsorted)
557 (flet ((depend-p (type1)
558 (find-if #'(lambda (type2)
560 ;; If a type depends a subtype it has to be
562 (not (type-is-p (car type2) (car type1)))
563 (find (car type2) (cdr type1))))
568 nconc (multiple-value-bind (sorted remaining)
571 (or (not (cdr type)) (not (depend-p type))))
575 ;; We have a circular dependency which have to
583 (not (type-is-p (car type) dep))
584 (not (find dep unsorted :key #'car))))
588 (error "Couldn't resolve circular dependency"))
589 (setq unsorted (delete selected unsorted))
592 (setq unsorted remaining)
595 ;; Mark types which have to be forward defined
598 as (type . dependencies) = (first tmp)
599 collect (cons type (and
601 (find-if #'(lambda (type)
602 (find (car type) dependencies))
607 (defun expand-type-definitions (type-list &optional args)
608 (flet ((type-options (type-number)
609 (let ((name (find-foreign-type-name type-number)))
610 (cdr (assoc name args :test #'string=)))))
614 #'(lambda (type-number)
615 (let ((name (find-foreign-type-name type-number)))
617 (getf (type-options type-number) :ignore)
621 (string-prefix-p (first options) name)
622 (getf (cdr options) :ignore-prefix)
624 #'(lambda (exception)
625 (string= name exception))
626 (getf (cdr options) :except)))))
630 (dolist (type-number type-list)
631 (let ((name (find-foreign-type-name type-number)))
633 (getf (type-options type-number) :type (default-type-name name))
634 (register-type-as type-number))))
636 ;; This is needed for some unknown reason to get type numbers right
637 (mapc #'find-type-dependencies type-list)
639 (let ((sorted-type-list
640 #+clisp (mapcar #'list type-list)
642 (sort-types-topologicaly
645 (cons type (find-type-dependencies type (type-options type))))
650 (destructuring-bind (type . forward-p) pair
651 (expand-type-definition type forward-p (type-options type))))
655 (destructuring-bind (type . forward-p) pair
657 (expand-type-definition type nil (type-options type)))))
658 sorted-type-list)))))
660 (defun expand-types-with-prefix (prefix args)
661 (expand-type-definitions (find-types prefix) args))
663 (defun expand-types-in-library (system library args)
664 (let* ((filename (library-filename system library))
666 for (type-init . %filename) in *type-initializers*
667 when (equal filename %filename)
668 collect (funcall type-init))))
669 (expand-type-definitions types args)))
671 (defun list-types-in-library (system library)
672 (let ((filename (library-filename system library)))
674 for (type-init . %filename) in *type-initializers*
675 when (equal filename %filename)
678 (defmacro define-types-by-introspection (prefix &rest args)
679 (expand-types-with-prefix prefix args))
681 (defexport define-types-by-introspection (prefix &rest args)
682 (list-autoexported-symbols (expand-types-with-prefix prefix args)))
684 (defmacro define-types-in-library (system library &rest args)
685 (expand-types-in-library system library args))
687 (defexport define-types-in-library (system library &rest args)
688 (list-autoexported-symbols (expand-types-in-library system library args)))
691 ;;;; Initialize all non static types in GObject
693 (init-types-in-library glib "libgobject-2.0")