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 1.13 2004-10-27 14:58:59 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   (apply #'call-next-method object initargs))
  58
  59
  60
  61 (defbinding (%gobject-new "g_object_new") () pointer
  62   (type type-number)
  63   (nil null))
  64
  65 (defbinding (%gobject-newvv "g_object_newvv") () pointer
  66   (type type-number)
  67   (n-parameters unsigned-int)
  68   (names (vector string))
  69   (values (vector gvalue)))
  70
  71
  72 (defbinding %object-ref (type location) pointer
  73   (location pointer))
  74
  75  (defbinding %object-unref (type location) nil
  76    (location pointer))
  77
  78 (defun object-ref (object)
  79   (%object-ref nil (proxy-location object)))
  80
  81 (defun object-unref (object)
  82   (%object-unref nil (proxy-location object)))
  83
  84
  85
  86 ;;;; Property stuff
  87
  88 (defbinding %object-set-property () nil
  89   (object gobject)
  90   (name string)
  91   (value gvalue))
  92
  93 (defbinding %object-get-property () nil
  94   (object gobject)
  95   (name string)
  96   (value gvalue))
  97
  98 (defbinding %object-notify () nil
  99   (object gobject)
 100   (name string))
 101
 102 (defbinding object-freeze-notify () nil
 103   (object gobject))
 104
 105 (defbinding object-thaw-notify () nil
 106   (object gobject))
 107
 108 (defbinding %object-set-qdata-full () nil
 109   (object gobject)
 110   (id quark)
 111   (data unsigned-long)
 112   (destroy-marshal pointer))
 113
 114
 115 ;;;; User data
 116
 117 (defun (setf object-data) (data object key &key (test #'eq))
 118   (%object-set-qdata-full
 119    object (quark-from-object key :test test)
 120    (register-user-data data) *destroy-notify*)
 121   data)
 122
 123 (defbinding %object-get-qdata () unsigned-long
 124   (object gobject)
 125   (id quark))
 126
 127 (defun object-data (object key &key (test #'eq))
 128   (find-user-data
 129    (%object-get-qdata object (quark-from-object key :test test))))
 130
 131
 132
 133 ;;;; Metaclass used for subclasses of gobject
 134
 135 (eval-when (:compile-toplevel :load-toplevel :execute)
 136   (defclass gobject-class (ginstance-class)
 137     ())
 138
 139   (defclass direct-gobject-slot-definition (direct-virtual-slot-definition)
 140     ((pname :reader slot-definition-pname :initarg :pname)
 141      (readable :initform t :reader slot-readable-p :initarg :readable)
 142      (writable :initform t :reader slot-writable-p :initarg :writable)
 143      (construct :initform nil :initarg :construct)))
 144
 145   (defclass effective-gobject-slot-definition (effective-virtual-slot-definition)
 146     ((pname :reader slot-definition-pname :initarg :pname)
 147      (readable :reader slot-readable-p :initarg :readable)
 148      (writable :reader slot-writable-p :initarg :writable)
 149      (construct :initarg :construct))))
 150
 151
 152
 153 ; (defbinding object-class-install-param () nil
 154 ;   (class pointer)
 155 ;   (id unsigned-int)
 156 ;   (parameter parameter))
 157
 158 ; (defbinding object-class-find-param-spec () parameter
 159 ;   (class pointer)
 160 ;   (name string))
 161
 162 (defun signal-name-to-string (name)
 163   (substitute #\_ #\- (string-downcase (string name))))
 164
 165
 166 (defmethod direct-slot-definition-class ((class gobject-class) &rest initargs)
 167   (case (getf initargs :allocation)
 168     (:property (find-class 'direct-gobject-slot-definition))
 169     (t (call-next-method))))
 170
 171 (defmethod effective-slot-definition-class ((class gobject-class) &rest initargs)
 172   (case (getf initargs :allocation)
 173     (:property (find-class 'effective-gobject-slot-definition))
 174     (t (call-next-method))))
 175
 176 (defmethod compute-effective-slot-definition-initargs ((class gobject-class) direct-slotds)
 177   (if (eq (most-specific-slot-value direct-slotds 'allocation) :property)
 178       (nconc
 179        (list :pname (signal-name-to-string
 180                      (most-specific-slot-value direct-slotds 'pname))
 181              :readable (most-specific-slot-value direct-slotds 'readable)
 182              :writable (most-specific-slot-value direct-slotds 'writable)
 183              :construct (most-specific-slot-value direct-slotds 'construct))
 184        (call-next-method))
 185     (call-next-method)))
 186
 187
 188 (defmethod initialize-internal-slot-functions ((slotd effective-gobject-slot-definition))
 189   (let* ((type (slot-definition-type slotd))
 190          (pname (slot-definition-pname slotd))
 191          (type-number (find-type-number type)))
 192     (unless (slot-boundp slotd 'reader-function)
 193       (setf
 194        (slot-value slotd 'reader-function)
 195        (if (slot-readable-p slotd)
 196            #'(lambda (object)
 197                (with-gc-disabled
 198                    (let ((gvalue (gvalue-new type-number)))
 199                      (%object-get-property object pname gvalue)
 200                      (unwind-protect
 201                           (funcall
 202                            (intern-reader-function (type-from-number type-number)) gvalue +gvalue-value-offset+) ; temporary workaround for wrong topological sorting of types
 203                        (gvalue-free gvalue t)))))
 204            #'(lambda (value object)
 205                (error "Slot is not readable: ~A" (slot-definition-name slotd))))))
 206
 207     (unless (slot-boundp slotd 'writer-function)
 208       (setf
 209        (slot-value slotd 'writer-function)
 210        (if (slot-writable-p slotd)
 211            #'(lambda (value object)
 212                (with-gc-disabled
 213                    (let ((gvalue (gvalue-new type-number)))
 214                      (funcall
 215                       (intern-writer-function (type-from-number type-number)) ; temporary
 216                       value gvalue +gvalue-value-offset+)
 217                      (%object-set-property object pname gvalue)
 218                      (funcall
 219                       (intern-destroy-function (type-from-number type-number)) ; temporary
 220                       gvalue +gvalue-value-offset+)
 221                      (gvalue-free gvalue nil)
 222                      value)))
 223            #'(lambda (value object)
 224                (error "Slot is not writable: ~A" (slot-definition-name slotd))))))
 225
 226     (unless (slot-boundp slotd 'boundp-function)
 227       (setf
 228        (slot-value slotd 'boundp-function)
 229        #'(lambda (object)
 230            (declare (ignore object))
 231            t))))
 232   (call-next-method))
 233
 234
 235 (defmethod validate-superclass ((class gobject-class)
 236                                 (super pcl::standard-class))
 237 ;  (subtypep (class-name super) 'gobject)
 238   t)
 239
 240
 241
 242 ;;;;
 243
 244 (defbinding %object-class-list-properties () pointer
 245   (class pointer)
 246   (n-properties unsigned-int :out))
 247
 248 (defun query-object-class-properties (type-number &optional
 249                                       inherited-properties)
 250   (let ((class (type-class-ref type-number)))
 251     (multiple-value-bind (array length)
 252         (%object-class-list-properties class)
 253       (unwind-protect
 254           (let ((all-properties
 255                  (map-c-array 'list #'identity array 'param length)))
 256             (if (not inherited-properties)
 257                 (delete-if
 258                  #'(lambda (param)
 259                      (not (eql type-number (param-owner-type param))))
 260                  all-properties)
 261               all-properties))
 262         (deallocate-memory array)))))
 263
 264
 265 (defun default-slot-name (name)
 266   (intern (substitute #\- #\_ (string-upcase (string-upcase name)))))
 267
 268 (defun default-slot-accessor (class-name slot-name type)
 269   (intern
 270    (format
 271     nil "~A-~A~A" class-name slot-name
 272     (if (eq type 'boolean) "-P" ""))))
 273
 274 (defun expand-gobject-type (type-number &optional options
 275                             (metaclass 'gobject-class))
 276   (let* ((supers (cons (supertype type-number) (implements type-number)))
 277          (class  (type-from-number type-number))
 278          (manual-slots (getf options :slots))
 279          (expanded-slots
 280           (mapcar
 281            #'(lambda (param)
 282                (with-slots (name flags value-type documentation) param
 283                  (let* ((slot-name (default-slot-name name))
 284 ;                       (slot-type value-type) ;(type-from-number value-type t))
 285                         (slot-type (or (type-from-number value-type) value-type))
 286                         (accessor
 287                          (default-slot-accessor class slot-name slot-type)));(type-from-number slot-type)))) ; temporary workaround for wrong topological sorting of types
 288
 289                    `(,slot-name
 290                      :allocation :property
 291                      :pname ,name
 292                      ,@(cond
 293                         ((and
 294                           (member :writable flags)
 295                           (member :readable flags)
 296                           (not (member :construct-only flags)))
 297                          (list :accessor accessor))
 298                         ((and (member :writable flags)
 299                               (not (member :construct-only flags)))
 300                          (list :writer `(setf ,accessor)))
 301                         ((member :readable flags)
 302                          (list :reader accessor)))
 303                      ,@(when (or
 304                               (not (member :writable flags))
 305                               (member :construct-only flags))
 306                          (list :writable nil))
 307                      ,@(when (not (member :readable flags))
 308                          (list :readable nil))
 309                      ,@(when (or
 310                               (member :construct flags)
 311                               (member :construct-only flags))
 312                          (list :construct t))
 313                      ,@(when (or
 314                               (member :construct flags)
 315                               (member :construct-only flags)
 316                               (member :writable flags))
 317                          (list :initarg (intern (string slot-name) "KEYWORD")))
 318                      :type ,slot-type
 319                      ,@(when documentation
 320                          (list :documentation documentation))))))
 321            (query-object-class-properties type-number))))
 322
 323     (dolist (slot-def (reverse manual-slots))
 324       (let ((name (car slot-def))
 325             (pname (getf (cdr slot-def) :pname)))
 326         (setq
 327          expanded-slots
 328          (delete-if
 329           #'(lambda (expanded-slot-def)
 330               (or
 331                (eq name (car expanded-slot-def))
 332                (and
 333                 pname
 334                 (string= pname (getf (cdr expanded-slot-def) :pname)))))
 335           expanded-slots))
 336
 337         (unless (getf (cdr slot-def) :ignore)
 338           (push slot-def expanded-slots))))
 339
 340     `(progn
 341        (defclass ,class ,supers
 342          ,expanded-slots
 343          (:metaclass ,metaclass)
 344          (:alien-name ,(find-type-name type-number))))))
 345
 346
 347 (register-derivable-type 'gobject "GObject" 'expand-gobject-type)
 348