mdw@git.distorted.org.uk Git - clg/blob - glib/gobject.lisp

   1 ;; Common Lisp bindings for GTK+ v2.0
   2 ;; Copyright (C) 2000-2001 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 1.8 2001-05-29 15:50:31 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     (:ref "g_object_ref")
  29     (:unref "g_object_unref")))
  30
  31 (defmethod initialize-instance ((object gobject) &rest initargs)
  32   (declare (ignore initargs))
  33   (setf
  34    (slot-value object 'location)
  35    (%gobject-new (type-number-of object)))
  36   (call-next-method))
  37
  38 (defbinding (%gobject-new "g_object_new") () pointer
  39   (type type-number)
  40   (nil null))
  41
  42
  43
  44 ;;;; Parameter stuff
  45
  46 (defbinding %object-set-property () nil
  47   (object gobject)
  48   (name string)
  49   (value gvalue))
  50
  51 (defbinding %object-get-property () nil
  52   (object gobject)
  53   (name string)
  54   (value gvalue))
  55
  56 (defbinding %object-notify () nil
  57   (object gobject)
  58   (name string))
  59
  60 (defbinding object-freeze-notify () nil
  61   (object gobject))
  62
  63 (defbinding object-thaw-notify () nil
  64   (object gobject))
  65
  66 (defbinding %object-set-qdata-full () nil
  67   (object gobject)
  68   (id quark)
  69   (data unsigned-long)
  70   (destroy-marshal pointer))
  71
  72
  73 ;;;; User data
  74
  75 (defun (setf object-data) (data object key &key (test #'eq))
  76   (%object-set-qdata-full
  77    object (quark-from-object key :test test)
  78    (register-user-data data) *destroy-notify*)
  79   data)
  80
  81 (defbinding %object-get-qdata () unsigned-long
  82   (object gobject)
  83   (id quark))
  84
  85 (defun object-data (object key &key (test #'eq))
  86   (find-user-data
  87    (%object-get-qdata object (quark-from-object key :test test))))
  88
  89
  90
  91 ;;;; Metaclass used for subclasses of gobject
  92
  93 (eval-when (:compile-toplevel :load-toplevel :execute)
  94   (defclass gobject-class (ginstance-class))
  95
  96   (defclass direct-gobject-slot-definition (direct-virtual-slot-definition)
  97     ((param :reader slot-definition-param)))
  98
  99   (defclass effective-gobject-slot-definition
 100     (effective-virtual-slot-definition)))
 101
 102
 103
 104 ; (defbinding object-class-install-param () nil
 105 ;   (class pointer)
 106 ;   (id unsigned-int)
 107 ;   (parameter parameter))
 108
 109 ; (defbinding object-class-find-param-spec () parameter
 110 ;   (class pointer)
 111 ;   (name string))
 112
 113
 114 (defmethod initialize-instance :after ((slotd direct-gobject-slot-definition)
 115                                        &rest initargs &key param)
 116   (declare (ignore initargs))
 117   (when param
 118     (setf
 119      (slot-value slotd 'param)
 120      (signal-name-to-string (slot-definition-name slotd)))))
 121
 122 (defmethod direct-slot-definition-class ((class gobject-class) initargs)
 123   (case (getf initargs :allocation)
 124     (:param (find-class 'direct-gobject-slot-definition))
 125     (t (call-next-method))))
 126
 127 (defmethod effective-slot-definition-class ((class gobject-class) initargs)
 128   (case (getf initargs :allocation)
 129     (:param (find-class 'effective-gobject-slot-definition))
 130     (t (call-next-method))))
 131
 132 (defmethod compute-virtual-slot-accessors
 133     ((class gobject-class) (slotd effective-gobject-slot-definition)
 134      direct-slotds)
 135   (with-slots (type) slotd
 136     (let ((param-name (slot-definition-param (first direct-slotds)))
 137           (type-number (find-type-number type)))
 138       (list
 139        #'(lambda (object)
 140            (with-gc-disabled
 141              (let ((gvalue (gvalue-new type-number)))
 142                (%object-get-property object param-name gvalue)
 143                (prog1
 144                    (funcall
 145                     (intern-reader-function type) gvalue +gvalue-value-offset+)
 146                  (gvalue-free gvalue t)))))
 147        #'(lambda (value object)
 148            (with-gc-disabled
 149              (let ((gvalue (gvalue-new type-number)))
 150                (funcall
 151                 (intern-writer-function type)
 152                 value gvalue +gvalue-value-offset+)
 153                (%object-set-property object param-name gvalue)
 154                (funcall
 155                 (intern-destroy-function type)
 156                 gvalue +gvalue-value-offset+)
 157                (gvalue-free gvalue nil)
 158                value)))))))
 159
 160 (defmethod validate-superclass ((class gobject-class)
 161                                 (super pcl::standard-class))
 162 ;  (subtypep (class-name super) 'gobject)
 163   t)
 164
 165
 166
 167 ;;;;
 168
 169 (defbinding %object-class-properties () pointer
 170   (class pointer)
 171   (n-properties unsigned-int :out))
 172
 173 (defun query-object-class-properties (type-number)
 174   (let ((class (type-class-ref type-number)))
 175     (multiple-value-bind (array length)
 176         (%object-class-properties class)
 177       (map-c-array 'list #'identity array 'param length))))
 178
 179 (defun query-object-type-dependencies (type-number)
 180   (delete-duplicates
 181    (reduce
 182     #'nconc
 183     (mapcar
 184      #'(lambda (param)
 185          ;; A gobject does not depend on it's supertypes due to forward
 186          ;; referenced superclasses
 187          (delete-if
 188           #'(lambda (type)
 189               (type-is-p type-number type))
 190           (type-hierarchy (param-type param))))
 191      (query-object-class-properties type-number)))))
 192
 193
 194 (defun default-slot-name (name)
 195   (intern (substitute #\- #\_ (string-upcase (string-upcase name)))))
 196
 197 (defun default-slot-accessor (class-name slot-name type)
 198   (intern
 199    (format
 200     nil "~A-~A~A" class-name slot-name
 201     (if (eq 'boolean type) "-P" ""))))
 202
 203 (defun expand-gobject-type (type-number &optional slots
 204                             (metaclass 'gobject-class))
 205   (let* ((super (supertype type-number))
 206          (class  (type-from-number type-number))
 207          (expanded-slots
 208           (mapcar
 209            #'(lambda (param)
 210                (with-slots (name flags type documentation) param
 211                  (let* ((slot-name (default-slot-name name))
 212                         (slot-type (type-from-number type #|t|#))
 213                         (accessor
 214                          (default-slot-accessor class slot-name slot-type)))
 215                    `(,slot-name
 216                      :allocation :param
 217                      :param ,name
 218                      ,@(cond
 219                         ((and
 220                           (member :writable flags)
 221                           (member :readable flags))
 222                          (list :accessor accessor))
 223                         ((member :writable flags)
 224                          (list :writer `(setf ,accessor)))
 225                         ((member :readable flags)
 226                          (list :reader accessor)))
 227                      ,@(when (or
 228                               (member :construct flags)
 229                               (member :writable flags))
 230                          (list :initarg (intern (string slot-name) "KEYWORD")))
 231                      :type ,slot-type
 232                      ,@(when documentation
 233                          (list :documentation documentation))))))
 234            (query-object-class-properties type-number))))
 235
 236     `(defclass ,class (,super)
 237        ,expanded-slots
 238        (:metaclass ,metaclass)
 239        (:alien-name ,(find-type-name type-number)))))
 240
 241 (register-derivable-type
 242  'gobject "GObject"
 243  :query 'query-object-type-dependencies
 244  :expand 'expand-gobject-type)
 245