1 ;; Common Lisp bindings for GTK+ v2.0
2 ;; Copyright (C) 2000-2001 Espen S. Johnsen <esj@stud.cs.uit.no>
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.
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.
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
18 ;; $Id: gobject.lisp,v 1.33 2005/02/27 15:14:38 espen Exp $
23 ;;;; Metaclass used for subclasses of gobject
25 (eval-when (:compile-toplevel :load-toplevel :execute)
26 (defclass gobject-class (ginstance-class)
29 (defmethod validate-superclass ((class gobject-class) (super standard-class))
30 ; (subtypep (class-name super) 'gobject)
33 (defclass direct-property-slot-definition (direct-virtual-slot-definition)
34 ((pname :reader slot-definition-pname :initarg :pname)
35 (readable :initform t :reader slot-readable-p :initarg :readable)
36 (writable :initform t :reader slot-writable-p :initarg :writable)
37 (construct :initform nil :initarg :construct)))
39 (defclass effective-property-slot-definition (effective-virtual-slot-definition)
40 ((pname :reader slot-definition-pname :initarg :pname)
41 (readable :reader slot-readable-p :initarg :readable)
42 (writable :reader slot-writable-p :initarg :writable)
43 (construct :initarg :construct)))
45 (defclass direct-user-data-slot-definition (direct-virtual-slot-definition)
48 (defclass effective-user-data-slot-definition (effective-virtual-slot-definition)
52 (defbinding %object-ref () pointer
55 (defbinding %object-unref () nil
58 (defmethod reference-foreign ((class gobject-class) location)
59 (declare (ignore class))
60 (%object-ref location))
62 (defmethod unreference-foreign ((class gobject-class) location)
63 (declare (ignore class))
64 (%object-unref location))
67 ; (defbinding object-class-install-param () nil
70 ; (parameter parameter))
72 ; (defbinding object-class-find-param-spec () parameter
76 (defun signal-name-to-string (name)
77 (substitute #\_ #\- (string-downcase (string name))))
80 (defmethod direct-slot-definition-class ((class gobject-class) &rest initargs)
81 (case (getf initargs :allocation)
82 (:property (find-class 'direct-property-slot-definition))
83 (:user-data (find-class 'direct-user-data-slot-definition))
84 (t (call-next-method))))
86 (defmethod effective-slot-definition-class ((class gobject-class) &rest initargs)
87 (case (getf initargs :allocation)
88 (:property (find-class 'effective-property-slot-definition))
89 (:user-data (find-class 'effective-user-data-slot-definition))
90 (t (call-next-method))))
92 (defmethod compute-effective-slot-definition-initargs ((class gobject-class) direct-slotds)
93 (if (typep (first direct-slotds) 'direct-property-slot-definition)
95 (list :pname (signal-name-to-string
96 (most-specific-slot-value direct-slotds 'pname))
97 :readable (most-specific-slot-value direct-slotds 'readable)
98 :writable (most-specific-slot-value direct-slotds 'writable)
99 :construct (most-specific-slot-value direct-slotds 'construct))
104 (defmethod initialize-internal-slot-functions ((slotd effective-property-slot-definition))
105 (let* ((type (slot-definition-type slotd))
106 (pname (slot-definition-pname slotd))
107 (type-number (find-type-number type)))
108 (when (and (not (slot-boundp slotd 'getter)) (slot-readable-p slotd))
110 (slot-value slotd 'getter)
111 (let ((reader nil)) ;(reader-function type)))
114 (setq reader (reader-function type)))
115 (let ((gvalue (gvalue-new type-number)))
116 (%object-get-property object pname gvalue)
118 (funcall reader gvalue +gvalue-value-offset+)
119 (gvalue-free gvalue t)))))))
121 (when (and (not (slot-boundp slotd 'setter)) (slot-writable-p slotd))
123 (slot-value slotd 'setter)
124 (let ((writer nil)) ;(writer-function type)))
125 #'(lambda (value object)
127 (setq writer (writer-function type)))
128 (let ((gvalue (gvalue-new type-number)))
129 (funcall writer value gvalue +gvalue-value-offset+)
130 (%object-set-property object pname gvalue)
131 (gvalue-free gvalue t)
136 (defmethod initialize-internal-slot-functions ((slotd effective-user-data-slot-definition))
137 (let ((slot-name (slot-definition-name slotd)))
138 (unless (slot-boundp slotd 'getter)
140 (slot-value slotd 'getter)
142 (prog1 (user-data object slot-name)))))
143 (unless (slot-boundp slotd 'setter)
145 (slot-value slotd 'setter)
146 #'(lambda (value object)
147 (setf (user-data object slot-name) value))))
148 (unless (slot-boundp slotd 'boundp)
150 (slot-value slotd 'boundp)
152 (user-data-p object slot-name)))))
156 ;;;; Super class for all classes in the GObject type hierarchy
158 (eval-when (:compile-toplevel :load-toplevel :execute)
159 (defclass gobject (ginstance)
161 (:metaclass gobject-class)
162 (:alien-name "GObject")))
165 (defun initial-add (object function initargs key pkey)
167 as (initarg value . rest) = initargs then rest
169 ((eq initarg key) (funcall function object value))
170 ((eq initarg pkey) (mapc #'(lambda (value)
171 (funcall function object value))
175 (defun initial-apply-add (object function initargs key pkey)
176 (initial-add object #'(lambda (object value)
177 (apply function object (mklist value)))
181 (defmethod initialize-instance ((object gobject) &rest initargs)
182 (unless (slot-boundp object 'location)
183 ;; Extract initargs which we should pass directly to the GObeject
185 (let* ((slotds (class-slots (class-of object)))
188 as (key value . rest) = initargs then rest
191 (member key (slot-definition-initargs slotd)))
193 when (and (typep slotd 'effective-property-slot-definition)
194 (slot-value slotd 'construct))
198 (slot-definition-pname slotd)
199 (slot-definition-type slotd)
203 (let* ((string-size (size-of 'string))
204 (string-writer (writer-function 'string))
205 (string-destroy (destroy-function 'string))
206 (params (allocate-memory
207 (* (length args) (+ string-size +gvalue-size+)))))
209 for (pname type value) in args
210 as tmp = params then (sap+ tmp (+ string-size +gvalue-size+))
211 do (funcall string-writer pname tmp)
212 (gvalue-init (sap+ tmp string-size) type value))
215 (slot-value object 'location)
216 (%gobject-newv (type-number-of object) (length args) params))
219 as tmp = params then (sap+ tmp (+ string-size +gvalue-size+))
220 do (funcall string-destroy tmp)
221 (gvalue-unset (sap+ tmp string-size)))
222 (deallocate-memory params)))
224 (slot-value object 'location)
225 (%gobject-new (type-number-of object))))))
227 (apply #'call-next-method object initargs))
230 (defmethod instance-finalizer ((instance gobject))
231 (let ((location (proxy-location instance)))
233 (remove-cached-instance location)
234 (%object-unref location))))
237 (defbinding (%gobject-new "g_object_new") () pointer
241 (defbinding (%gobject-newv "g_object_newv") () pointer
243 (n-parameters unsigned-int)
250 (defbinding %object-set-property () nil
255 (defbinding %object-get-property () nil
260 (defbinding %object-notify () nil
264 (defbinding object-freeze-notify () nil
267 (defbinding object-thaw-notify () nil
273 (defbinding %object-set-qdata-full () nil
277 (destroy-marshal pointer))
279 (defcallback user-data-destroy-func (nil (id unsigned-int))
280 (destroy-user-data id))
282 (export 'user-data-destroy-func)
284 (defun (setf user-data) (data object key)
285 (%object-set-qdata-full object (quark-intern key)
286 (register-user-data data) (callback user-data-destroy-func))
290 (defun (setf object-data) (data object key &key (test #'eq))
291 (assert (eq test #'eq))
292 (setf (user-data object key) data))
294 (defbinding %object-get-qdata () unsigned-long
298 (defun user-data (object key)
299 (find-user-data (%object-get-qdata object (quark-intern key))))
302 (defun object-data (object key &key (test #'eq))
303 (assert (eq test #'eq))
304 (user-data object key))
306 (defun user-data-p (object key)
307 (user-data-exists-p (%object-get-qdata object (quark-intern key))))
309 (defbinding %object-steal-qdata () unsigned-long
313 (defun unset-user-data (object key)
314 (destroy-user-data (%object-steal-qdata object (quark-intern key))))
319 (defbinding %object-class-list-properties () pointer
321 (n-properties unsigned-int :out))
324 (defun %map-params (params length type inherited-p)
326 (map-c-vector 'list #'identity params 'param length)
327 (let ((properties ()))
330 (when (eql (param-owner-type param) type)
331 (push param properties)))
332 params 'param length)
333 (nreverse properties))))
335 (defun query-object-class-properties (type &optional inherited-p)
336 (let* ((type-number (find-type-number type))
337 (class (type-class-ref type-number)))
339 (multiple-value-bind (array length)
340 (%object-class-list-properties class)
341 (unless (null-pointer-p array)
343 (%map-params array length type-number inherited-p)
344 (deallocate-memory array))))
345 ; (type-class-unref type-number)
349 (defun default-slot-name (name)
350 (intern (substitute #\- #\_ (string-upcase (string-upcase name)))))
352 (defun default-slot-accessor (class-name slot-name type)
355 nil "~A-~A~A" class-name slot-name
356 (if (eq type 'boolean) "-P" ""))))
359 (defun slot-definition-from-property (class property &optional slot-name args)
360 (with-slots (name flags value-type documentation) property
361 (let* ((slot-name (or slot-name (default-slot-name name)))
362 (slot-type (or (getf args :type) (type-from-number value-type) 'pointer))
363 (accessor (default-slot-accessor class slot-name slot-type)))
366 :allocation :property :pname ,name
369 ((find :unbound args) (list :unbound (getf args :unbound))))
374 (member :writable flags) (member :readable flags)
375 (not (member :construct-only flags)))
376 (list :accessor accessor))
377 ((and (member :writable flags) (not (member :construct-only flags)))
378 (list :writer `(setf ,accessor)))
379 ((member :readable flags)
380 (list :reader accessor)))
382 ;; readable/writable/construct
383 ,@(when (or (not (member :writable flags))
384 (member :construct-only flags))
386 ,@(when (not (member :readable flags))
388 ,@(when (or (member :construct flags)
389 (member :construct-only flags))
393 ,@(if (find :initarg args)
394 (let ((initarg (getf args :initarg)))
397 (symbol `(:initarg ,initarg))))
398 (when (or (member :construct flags)
399 (member :construct-only flags)
400 (member :writable flags))
401 (list :initarg (intern (string slot-name) "KEYWORD"))))
404 :documentation ,documentation))))
407 (defun slot-definitions (class properties slots)
409 for property in properties
411 (find (param-name property) slots
412 :key #'(lambda (slot) (getf (rest slot) :pname))
414 (find (param-name property) slots
415 :key #'first :test #'string-equal))
418 (push (slot-definition-from-property class property) slots))
419 ((getf (rest slot) :merge)
422 (rest (slot-definition-from-property class property (first slot) (rest slot)))))))
423 (delete-if #'(lambda (slot) (getf (rest slot) :ignore)) slots))
426 (defun expand-gobject-type (type forward-p options &optional (metaclass 'gobject-class))
427 (let ((supers (cons (supertype type) (implements type)))
428 (class (type-from-number type))
429 (slots (getf options :slots)))
430 `(defclass ,class ,supers
432 (slot-definitions class (query-object-class-properties type) slots))
433 (:metaclass ,metaclass)
434 (:alien-name ,(find-type-name type)))))
436 (defun gobject-dependencies (type)
441 (type-interfaces type)
442 (mapcar #'param-value-type (query-object-class-properties type))))))
445 (register-derivable-type 'gobject "GObject" 'expand-gobject-type 'gobject-dependencies)
448 ;;; Pseudo type for gobject instances which have their reference count
449 ;;; increased by the returning function
451 (defmethod alien-type ((type (eql 'referenced)) &rest args)
452 (declare (ignore type args))
453 (alien-type 'gobject))
455 (defmethod from-alien-form (form (type (eql 'referenced)) &rest args)
456 (declare (ignore type))
457 (destructuring-bind (type) args
458 (if (subtypep type 'gobject)
459 (let ((instance (make-symbol "INSTANCE")))
460 `(let ((,instance ,(from-alien-form form type)))
462 (%object-unref (proxy-location ,instance)))
464 (error "~A is not a subclass of GOBJECT" type))))