| 1 | ;; Common Lisp bindings for GTK+ v2.0 |
| 2 | ;; Copyright (C) 2000 Espen S. Johnsen <esj@stud.cs.uit.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 1.4 2001/01/28 14:17:12 espen Exp $ |
| 19 | |
| 20 | (in-package "GLIB") |
| 21 | |
| 22 | |
| 23 | (eval-when (:compile-toplevel :load-toplevel :execute) |
| 24 | (defclass gobject (ginstance) |
| 25 | () |
| 26 | (:metaclass ginstance-class) |
| 27 | (:alien-name "GObject"))) |
| 28 | |
| 29 | |
| 30 | ;;;; Object construction |
| 31 | |
| 32 | (define-foreign ("g_object_new" %gobject-new) () gobject |
| 33 | (type type-number) |
| 34 | (nil null)) |
| 35 | |
| 36 | |
| 37 | ;;;; Reference counting for gobject |
| 38 | |
| 39 | ;; Specializing reference-instance and unreference-instance on gobject |
| 40 | ;; is not really necessary but done for efficiency |
| 41 | |
| 42 | (defmethod reference-instance ((object gobject)) |
| 43 | (%object-ref object) |
| 44 | object) |
| 45 | |
| 46 | (defmethod unreference-instance ((object gobject)) |
| 47 | (%object-unref object)) |
| 48 | |
| 49 | (deftype-method alien-ref gobject (type-spec) |
| 50 | (declare (ignore type-spec)) |
| 51 | '%object-ref) |
| 52 | |
| 53 | (deftype-method alien-unref gobject (type-spec) |
| 54 | (declare (ignore type-spec)) |
| 55 | '%object-unref) |
| 56 | |
| 57 | (define-foreign %object-ref () pointer |
| 58 | (object (or gobject pointer))) |
| 59 | |
| 60 | (define-foreign %object-unref () nil |
| 61 | (object (or gobject pointer))) |
| 62 | |
| 63 | |
| 64 | ;;;; Parameter stuff |
| 65 | |
| 66 | (define-foreign %object-set-property () nil |
| 67 | (object gobject) |
| 68 | (name string) |
| 69 | (value gvalue)) |
| 70 | |
| 71 | (define-foreign %object-get-property () nil |
| 72 | (object gobject) |
| 73 | (name string) |
| 74 | (value gvalue)) |
| 75 | |
| 76 | (define-foreign %object-notify () nil |
| 77 | (object gobject) |
| 78 | (name string)) |
| 79 | |
| 80 | (define-foreign object-freeze-notify () nil |
| 81 | (object gobject)) |
| 82 | |
| 83 | (define-foreign object-thaw-notify () nil |
| 84 | (object gobject)) |
| 85 | |
| 86 | (define-foreign %object-set-qdata-full () nil |
| 87 | (object gobject) |
| 88 | (id quark) |
| 89 | (data unsigned-long) |
| 90 | (destroy-marshal pointer)) |
| 91 | |
| 92 | |
| 93 | ;;;; User data |
| 94 | |
| 95 | (defun (setf object-data) (data object key &key (test #'eq)) |
| 96 | (%object-set-qdata-full |
| 97 | object (quark-from-object key :test test) |
| 98 | (register-user-data data) *destroy-notify*) |
| 99 | data) |
| 100 | |
| 101 | (define-foreign %object-get-qdata () unsigned-long |
| 102 | (object gobject) |
| 103 | (id quark)) |
| 104 | |
| 105 | (defun object-data (object key &key (test #'eq)) |
| 106 | (find-user-data |
| 107 | (%object-get-qdata object (quark-from-object key :test test)))) |
| 108 | |
| 109 | |
| 110 | |
| 111 | ;;;; Metaclass used for subclasses of gobject |
| 112 | |
| 113 | (eval-when (:compile-toplevel :load-toplevel :execute) |
| 114 | (defclass gobject-class (ginstance-class)) |
| 115 | |
| 116 | (defclass direct-gobject-slot-definition (direct-virtual-slot-definition)) |
| 117 | |
| 118 | (defclass effective-gobject-slot-definition |
| 119 | (effective-virtual-slot-definition))) |
| 120 | |
| 121 | (defmethod allocate-alien-storage ((class gobject-class)) |
| 122 | (alien-instance-location (%gobject-new (find-type-number class)))) |
| 123 | |
| 124 | (defmethod shared-initialize ((class gobject-class) names &rest initargs |
| 125 | &key type-init name) |
| 126 | (declare (ignore initargs names)) |
| 127 | (let ((alien |
| 128 | (alien::%heap-alien |
| 129 | (alien::make-heap-alien-info |
| 130 | :type (alien::parse-alien-type '(function (unsigned 32))) |
| 131 | :sap-form (system:foreign-symbol-address |
| 132 | (or |
| 133 | (first type-init) |
| 134 | (default-alien-func-name |
| 135 | (format |
| 136 | nil "~A_get_type" (or name (class-name class)))))))))) |
| 137 | (alien:alien-funcall alien)) |
| 138 | (call-next-method)) |
| 139 | |
| 140 | |
| 141 | ; (define-foreign object-class-install-param () nil |
| 142 | ; (class pointer) |
| 143 | ; (id unsigned-int) |
| 144 | ; (parameter parameter)) |
| 145 | |
| 146 | ; (define-foreign object-class-find-param-spec () parameter |
| 147 | ; (class pointer) |
| 148 | ; (name string)) |
| 149 | |
| 150 | |
| 151 | (defmethod initialize-instance :after ((slotd direct-gobject-slot-definition) |
| 152 | &rest initargs &key) |
| 153 | (declare (ignore initargs)) |
| 154 | (unless (slot-boundp slotd 'location) |
| 155 | ;; Find parameter name from slot name |
| 156 | (with-slots (pcl::name location) slotd |
| 157 | (setf location (signal-name-to-string pcl::name))))) |
| 158 | |
| 159 | (defmethod direct-slot-definition-class ((class gobject-class) initargs) |
| 160 | (case (getf initargs :allocation) |
| 161 | (:param (find-class 'direct-gobject-slot-definition)) |
| 162 | (t (call-next-method)))) |
| 163 | |
| 164 | (defmethod effective-slot-definition-class ((class gobject-class) initargs) |
| 165 | (case (getf initargs :allocation) |
| 166 | (:param (find-class 'effective-gobject-slot-definition)) |
| 167 | (t (call-next-method)))) |
| 168 | |
| 169 | (defmethod compute-virtual-slot-location |
| 170 | ((class gobject-class) (slotd effective-gobject-slot-definition) |
| 171 | direct-slotds) |
| 172 | (with-slots (type) slotd |
| 173 | (let ((param-name (slot-definition-location (first direct-slotds))) |
| 174 | (type-number (find-type-number type)) |
| 175 | (reader (get-reader-function type)) |
| 176 | (writer (get-writer-function type)) |
| 177 | (destroy (get-destroy-function type))) |
| 178 | (list |
| 179 | #'(lambda (object) |
| 180 | (with-gc-disabled |
| 181 | (let ((gvalue (gvalue-new type-number))) |
| 182 | (%object-get-property object param-name gvalue) |
| 183 | (prog1 |
| 184 | (funcall reader gvalue +gvalue-value-offset+) |
| 185 | (gvalue-free gvalue t))))) |
| 186 | #'(lambda (value object) |
| 187 | (with-gc-disabled |
| 188 | (let ((gvalue (gvalue-new type-number))) |
| 189 | (funcall writer value gvalue +gvalue-value-offset+) |
| 190 | (%object-set-property object param-name gvalue) |
| 191 | (funcall destroy gvalue +gvalue-value-offset+) |
| 192 | (gvalue-free gvalue nil) |
| 193 | value))))))) |
| 194 | |
| 195 | |
| 196 | (defmethod validate-superclass ((class gobject-class) |
| 197 | (super pcl::standard-class)) |
| 198 | (subtypep (class-name super) 'gobject)) |