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1 | ;; Common Lisp bindings for GTK+ v2.0 |
2 | ;; Copyright (C) 2000 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 | |
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18 | ;; $Id: gobject.lisp,v 1.2 2000-08-23 21:40:38 espen Exp $ |
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19 | |
20 | (in-package "GLIB") |
21 | |
22 | |
23 | (eval-when (:compile-toplevel :load-toplevel :execute) |
24 | (defclass gobject (gtype) |
25 | () |
26 | (:metaclass gtype-class) |
27 | (:alien-name "GObject")) |
28 | |
29 | (defclass gobject-class (gtype-class))) |
30 | |
31 | |
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32 | ;;;; Reference counting for gobject |
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33 | |
34 | ;; Specializing reference-instance and unreference-instance on gobject |
35 | ;; is not really necessary but done for efficiency |
36 | |
37 | (defmethod reference-instance ((object gobject)) |
38 | (%object-ref object) |
39 | object) |
40 | |
41 | (defmethod unreference-instance ((object gobject)) |
42 | (%object-unref object)) |
43 | |
44 | (deftype-method alien-ref gobject (type-spec) |
45 | (declare (ignore type-spec)) |
46 | '%object-ref) |
47 | |
48 | (deftype-method alien-unref gobject (type-spec) |
49 | (declare (ignore type-spec)) |
50 | '%object-unref) |
51 | |
52 | (define-foreign %object-ref () pointer |
53 | (object (or gobject pointer))) |
54 | |
55 | (define-foreign %object-unref () nil |
56 | (object (or gobject pointer))) |
57 | |
58 | |
59 | ;; Parameter stuff not yet implemented |
60 | |
61 | ; (define-foreign object-set-param () nil |
62 | ; (object gobject) |
63 | ; (name string) |
64 | ; (value gvalue)) |
65 | |
66 | ; (define-foreign object-get-param () nil |
67 | ; (object gobject) |
68 | ; (name string) |
69 | ; (value gvalue :out)) |
70 | |
71 | ; (define-foreign object-queue-param-changed () nil |
72 | ; (object gobject) |
73 | ; (name string)) |
74 | |
75 | |
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76 | ;;;; User data mechanism |
77 | |
78 | (declaim (fixnum *user-data-count*)) |
79 | |
80 | (defvar *user-data* (make-hash-table)) |
81 | (defvar *user-data-count* 0) |
82 | |
83 | ;; Until the callback mechanism is moved to glib, the value of |
84 | ;; *destroy-marshal* is set in gtkobject.lisp |
85 | (defvar *destroy-marshal* nil) |
86 | |
87 | (defun register-user-data (object &optional destroy-function) |
88 | (check-type destroy-function (or null symbol function)) |
89 | ; (incf *user-data-count*) |
90 | (setq *user-data-count* (the fixnum (1+ *user-data-count*))) |
91 | (setf |
92 | (gethash *user-data-count* *user-data*) |
93 | (cons object destroy-function)) |
94 | *user-data-count*) |
95 | |
96 | (defun find-user-data (id) |
97 | (check-type id fixnum) |
98 | (multiple-value-bind (user-data p) (gethash id *user-data*) |
99 | (values (car user-data) p))) |
100 | |
101 | (defun destroy-user-data (id) |
102 | (check-type id fixnum) |
103 | (let ((user-data (gethash id *user-data*))) |
104 | (when (cdr user-data) |
105 | (funcall (cdr user-data) (car user-data)))) |
106 | (remhash id *user-data*)) |
107 | |
108 | (define-foreign %object-set-qdata-full () nil |
109 | (object gobject) |
110 | (id quark) |
111 | (data unsigned-long) |
112 | (destroy-marshal pointer)) |
113 | |
114 | (defun (setf object-data) (data object key &key (test #'eq)) |
115 | (%object-set-qdata-full |
116 | object (quark-from-object key :test test) |
117 | (register-user-data data) *destroy-marshal*) |
118 | data) |
119 | |
120 | (define-foreign %object-get-qdata () unsigned-long |
121 | (object gobject) |
122 | (id quark)) |
123 | |
124 | (defun object-data (object key &key (test #'eq)) |
125 | (find-user-data |
126 | (%object-get-qdata object (quark-from-object key :test test)))) |
127 | |
128 | |
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129 | |
130 | ;;;; Methods for gobject-class |
131 | |
132 | (defmethod shared-initialize ((class gobject-class) names &rest initargs |
133 | &key type-init name) |
134 | (declare (ignore initargs names)) |
135 | (let ((alien |
136 | (alien::%heap-alien |
137 | (alien::make-heap-alien-info |
138 | :type (alien::parse-alien-type '(function (unsigned 32))) |
139 | :sap-form (system:foreign-symbol-address |
140 | (or |
141 | (first type-init) |
142 | (default-alien-func-name |
143 | (format |
144 | nil "~A_get_type" (or name (class-name class)))))))))) |
145 | (alien:alien-funcall alien)) |
146 | (call-next-method)) |
147 | |
148 | |
149 | ; (define-foreign object-class-install-param () nil |
150 | ; (class pointer) |
151 | ; (id unsigned-int) |
152 | ; (parameter parameter)) |
153 | |
154 | ; (define-foreign object-class-find-param-spec () parameter |
155 | ; (class pointer) |
156 | ; (name string)) |
157 | |