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 1.14 2004-10-28 09:34:35 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     (:copy %object-ref)
  29     (:free %object-unref)))
  30
  31
  32 (defmethod initialize-instance ((object gobject) &rest initargs)
  33   (let ((slotds (class-slots (class-of object)))
  34         (names (make-array 0 :adjustable t :fill-pointer t))
  35         (values (make-array 0 :adjustable t :fill-pointer t)))
  36
  37     (loop
  38      as tmp = initargs then (cddr tmp) while tmp
  39      as key = (first tmp)
  40      as value = (second tmp)
  41      as slotd = (find-if
  42                  #'(lambda (slotd)
  43                      (member key (slot-definition-initargs slotd)))
  44                  slotds)
  45      when (and (typep slotd 'effective-gobject-slot-definition)
  46                (slot-value slotd 'construct))
  47      do (let ((type (find-type-number (slot-definition-type slotd))))
  48           (vector-push-extend (slot-definition-pname slotd) names)
  49           (vector-push-extend (gvalue-new type value) values)
  50           (remf initargs key)))
  51
  52     (setf
  53      (slot-value object 'location)
  54      (if (zerop (length names))
  55          (%gobject-new (type-number-of object))
  56        (%gobject-newvv (type-number-of object) (length names) names values)))
  57
  58     (mapc #'gvalue-free values))
  59
  60   (apply #'call-next-method object initargs))
  61
  62
  63
  64 (defbinding (%gobject-new "g_object_new") () pointer
  65   (type type-number)
  66   (nil null))
  67
  68 (defbinding (%gobject-newvv "g_object_newvv") () pointer
  69   (type type-number)
  70   (n-parameters unsigned-int)
  71   (names (vector string))
  72   (values (vector gvalue)))
  73
  74
  75 (defbinding %object-ref (type location) pointer
  76   (location pointer))
  77
  78  (defbinding %object-unref (type location) nil
  79    (location pointer))
  80
  81 (defun object-ref (object)
  82   (%object-ref nil (proxy-location object)))
  83
  84 (defun object-unref (object)
  85   (%object-unref nil (proxy-location object)))
  86
  87
  88
  89 ;;;; Property stuff
  90
  91 (defbinding %object-set-property () nil
  92   (object gobject)
  93   (name string)
  94   (value gvalue))
  95
  96 (defbinding %object-get-property () nil
  97   (object gobject)
  98   (name string)
  99   (value gvalue))
 100
 101 (defbinding %object-notify () nil
 102   (object gobject)
 103   (name string))
 104
 105 (defbinding object-freeze-notify () nil
 106   (object gobject))
 107
 108 (defbinding object-thaw-notify () nil
 109   (object gobject))
 110
 111 (defbinding %object-set-qdata-full () nil
 112   (object gobject)
 113   (id quark)
 114   (data unsigned-long)
 115   (destroy-marshal pointer))
 116
 117
 118 ;;;; User data
 119
 120 (defun (setf object-data) (data object key &key (test #'eq))
 121   (%object-set-qdata-full
 122    object (quark-from-object key :test test)
 123    (register-user-data data) *destroy-notify*)
 124   data)
 125
 126 (defbinding %object-get-qdata () unsigned-long
 127   (object gobject)
 128   (id quark))
 129
 130 (defun object-data (object key &key (test #'eq))
 131   (find-user-data
 132    (%object-get-qdata object (quark-from-object key :test test))))
 133
 134
 135
 136 ;;;; Metaclass used for subclasses of gobject
 137
 138 (eval-when (:compile-toplevel :load-toplevel :execute)
 139   (defclass gobject-class (ginstance-class)
 140     ())
 141
 142   (defclass direct-gobject-slot-definition (direct-virtual-slot-definition)
 143     ((pname :reader slot-definition-pname :initarg :pname)
 144      (readable :initform t :reader slot-readable-p :initarg :readable)
 145      (writable :initform t :reader slot-writable-p :initarg :writable)
 146      (construct :initform nil :initarg :construct)))
 147
 148   (defclass effective-gobject-slot-definition (effective-virtual-slot-definition)
 149     ((pname :reader slot-definition-pname :initarg :pname)
 150      (readable :reader slot-readable-p :initarg :readable)
 151      (writable :reader slot-writable-p :initarg :writable)
 152      (construct :initarg :construct))))
 153
 154
 155
 156 ; (defbinding object-class-install-param () nil
 157 ;   (class pointer)
 158 ;   (id unsigned-int)
 159 ;   (parameter parameter))
 160
 161 ; (defbinding object-class-find-param-spec () parameter
 162 ;   (class pointer)
 163 ;   (name string))
 164
 165 (defun signal-name-to-string (name)
 166   (substitute #\_ #\- (string-downcase (string name))))
 167
 168
 169 (defmethod direct-slot-definition-class ((class gobject-class) &rest initargs)
 170   (case (getf initargs :allocation)
 171     (:property (find-class 'direct-gobject-slot-definition))
 172     (t (call-next-method))))
 173
 174 (defmethod effective-slot-definition-class ((class gobject-class) &rest initargs)
 175   (case (getf initargs :allocation)
 176     (:property (find-class 'effective-gobject-slot-definition))
 177     (t (call-next-method))))
 178
 179 (defmethod compute-effective-slot-definition-initargs ((class gobject-class) direct-slotds)
 180   (if (eq (most-specific-slot-value direct-slotds 'allocation) :property)
 181       (nconc
 182        (list :pname (signal-name-to-string
 183                      (most-specific-slot-value direct-slotds 'pname))
 184              :readable (most-specific-slot-value direct-slotds 'readable)
 185              :writable (most-specific-slot-value direct-slotds 'writable)
 186              :construct (most-specific-slot-value direct-slotds 'construct))
 187        (call-next-method))
 188     (call-next-method)))
 189
 190
 191 (defmethod initialize-internal-slot-functions ((slotd effective-gobject-slot-definition))
 192   (let* ((type (slot-definition-type slotd))
 193          (pname (slot-definition-pname slotd))
 194          (type-number (find-type-number type)))
 195     (unless (slot-boundp slotd 'reader-function)
 196       (setf
 197        (slot-value slotd 'reader-function)
 198        (if (slot-readable-p slotd)
 199            #'(lambda (object)
 200                (with-gc-disabled
 201                    (let ((gvalue (gvalue-new type-number)))
 202                      (%object-get-property object pname gvalue)
 203                      (unwind-protect
 204                           (funcall
 205                            (intern-reader-function (type-from-number type-number)) gvalue +gvalue-value-offset+) ; temporary workaround for wrong topological sorting of types
 206                        (gvalue-free gvalue t)))))
 207            #'(lambda (value object)
 208                (error "Slot is not readable: ~A" (slot-definition-name slotd))))))
 209
 210     (unless (slot-boundp slotd 'writer-function)
 211       (setf
 212        (slot-value slotd 'writer-function)
 213        (if (slot-writable-p slotd)
 214            #'(lambda (value object)
 215                (with-gc-disabled
 216                    (let ((gvalue (gvalue-new type-number)))
 217                      (funcall
 218                       (intern-writer-function (type-from-number type-number)) ; temporary
 219                       value gvalue +gvalue-value-offset+)
 220                      (%object-set-property object pname gvalue)
 221                      (funcall
 222                       (intern-destroy-function (type-from-number type-number)) ; temporary
 223                       gvalue +gvalue-value-offset+)
 224                      (gvalue-free gvalue nil)
 225                      value)))
 226            #'(lambda (value object)
 227                (error "Slot is not writable: ~A" (slot-definition-name slotd))))))
 228
 229     (unless (slot-boundp slotd 'boundp-function)
 230       (setf
 231        (slot-value slotd 'boundp-function)
 232        #'(lambda (object)
 233            (declare (ignore object))
 234            t))))
 235   (call-next-method))
 236
 237
 238 (defmethod validate-superclass ((class gobject-class)
 239                                 (super pcl::standard-class))
 240 ;  (subtypep (class-name super) 'gobject)
 241   t)
 242
 243
 244
 245 ;;;;
 246
 247 (defbinding %object-class-list-properties () pointer
 248   (class pointer)
 249   (n-properties unsigned-int :out))
 250
 251 (defun query-object-class-properties (type-number &optional
 252                                       inherited-properties)
 253   (let ((class (type-class-ref type-number)))
 254     (multiple-value-bind (array length)
 255         (%object-class-list-properties class)
 256       (unwind-protect
 257           (let ((all-properties
 258                  (map-c-array 'list #'identity array 'param length)))
 259             (if (not inherited-properties)
 260                 (delete-if
 261                  #'(lambda (param)
 262                      (not (eql type-number (param-owner-type param))))
 263                  all-properties)
 264               all-properties))
 265         (deallocate-memory array)))))
 266
 267
 268 (defun default-slot-name (name)
 269   (intern (substitute #\- #\_ (string-upcase (string-upcase name)))))
 270
 271 (defun default-slot-accessor (class-name slot-name type)
 272   (intern
 273    (format
 274     nil "~A-~A~A" class-name slot-name
 275     (if (eq type 'boolean) "-P" ""))))
 276
 277 (defun expand-gobject-type (type-number &optional options
 278                             (metaclass 'gobject-class))
 279   (let* ((supers (cons (supertype type-number) (implements type-number)))
 280          (class  (type-from-number type-number))
 281          (manual-slots (getf options :slots))
 282          (expanded-slots
 283           (mapcar
 284            #'(lambda (param)
 285                (with-slots (name flags value-type documentation) param
 286                  (let* ((slot-name (default-slot-name name))
 287 ;                       (slot-type value-type) ;(type-from-number value-type t))
 288                         (slot-type (or (type-from-number value-type) value-type))
 289                         (accessor
 290                          (default-slot-accessor class slot-name slot-type)));(type-from-number slot-type)))) ; temporary workaround for wrong topological sorting of types
 291
 292                    `(,slot-name
 293                      :allocation :property
 294                      :pname ,name
 295                      ,@(cond
 296                         ((and
 297                           (member :writable flags)
 298                           (member :readable flags)
 299                           (not (member :construct-only flags)))
 300                          (list :accessor accessor))
 301                         ((and (member :writable flags)
 302                               (not (member :construct-only flags)))
 303                          (list :writer `(setf ,accessor)))
 304                         ((member :readable flags)
 305                          (list :reader accessor)))
 306                      ,@(when (or
 307                               (not (member :writable flags))
 308                               (member :construct-only flags))
 309                          (list :writable nil))
 310                      ,@(when (not (member :readable flags))
 311                          (list :readable nil))
 312                      ,@(when (or
 313                               (member :construct flags)
 314                               (member :construct-only flags))
 315                          (list :construct t))
 316                      ,@(when (or
 317                               (member :construct flags)
 318                               (member :construct-only flags)
 319                               (member :writable flags))
 320                          (list :initarg (intern (string slot-name) "KEYWORD")))
 321                      :type ,slot-type
 322                      ,@(when documentation
 323                          (list :documentation documentation))))))
 324            (query-object-class-properties type-number))))
 325
 326     (dolist (slot-def (reverse manual-slots))
 327       (let ((name (car slot-def))
 328             (pname (getf (cdr slot-def) :pname)))
 329         (setq
 330          expanded-slots
 331          (delete-if
 332           #'(lambda (expanded-slot-def)
 333               (or
 334                (eq name (car expanded-slot-def))
 335                (and
 336                 pname
 337                 (string= pname (getf (cdr expanded-slot-def) :pname)))))
 338           expanded-slots))
 339
 340         (unless (getf (cdr slot-def) :ignore)
 341           (push slot-def expanded-slots))))
 342
 343     `(progn
 344        (defclass ,class ,supers
 345          ,expanded-slots
 346          (:metaclass ,metaclass)
 347          (:alien-name ,(find-type-name type-number))))))
 348
 349
 350 (register-derivable-type 'gobject "GObject" 'expand-gobject-type)
 351