| 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 | |
| 18 | ;; $Id: gobject.lisp,v 1.2 2000/08/23 21:40:38 espen Exp $ |
| 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 | |
| 32 | ;;;; Reference counting for gobject |
| 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 | |
| 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 | |
| 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 | |