mdw@git.distorted.org.uk Git - clg/blob - gtk/gtkobject.lisp

   1 ;; Common Lisp bindings for GTK+ v2.0
   2 ;; Copyright (C) 1999-2000 Espen S. Johnsen <esj@ostud.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: gtkobject.lisp,v 1.8 2001-01-28 14:23:38 espen Exp $
  19
  20
  21 (in-package "GTK")
  22
  23
  24 ;;;; Initializing
  25
  26 (setf (alien-type-name 'pointer) "gpointer")
  27
  28
  29 ;;;; Misc utils
  30
  31 (defun name-to-string (name)
  32   (substitute #\_ #\- (string-downcase (string name))))
  33
  34 (defun string-to-name (name &optional (package "KEYWORD"))
  35   (intern (substitute #\- #\_ (string-upcase name)) package))
  36
  37
  38 ;;; Argument stuff - to be removed soon
  39
  40 (deftype arg () 'pointer)
  41
  42 (defconstant +arg-type-offset+ 0)
  43 (defconstant +arg-name-offset+ 4)
  44 (defconstant +arg-value-offset+ 8)
  45 (defconstant +arg-size+ 16)
  46
  47 (define-foreign arg-new () arg
  48   (type type-number))
  49
  50 (define-foreign %arg-free () nil
  51   (arg arg)
  52   (free-contents boolean))
  53
  54 (defun arg-free (arg free-contents &optional alien)
  55   (cond
  56    (alien (%arg-free arg free-contents))
  57    (t
  58     (unless (null-pointer-p arg)
  59       (when free-contents
  60         (funcall
  61          (get-destroy-function (type-from-number (arg-type arg)))
  62          arg +arg-value-offset+))
  63       (deallocate-memory arg)))))
  64
  65 (define-foreign %arg-reset () nil
  66   (arg arg))
  67
  68 (defun arg-name (arg)
  69   (funcall (get-reader-function '(static string)) arg +arg-name-offset+))
  70
  71 (defun (setf arg-name) (name arg)
  72   (funcall (get-writer-function '(static string)) name arg +arg-name-offset+)
  73   name)
  74
  75 (defun arg-type (arg)
  76   (system:sap-ref-32 arg +arg-type-offset+))
  77
  78 (defun (setf arg-type) (type arg)
  79   (setf (system:sap-ref-32 arg +arg-type-offset+) type))
  80
  81 (defun arg-value (arg &optional (type (type-from-number (arg-type arg))))
  82   (funcall (get-reader-function type) arg +arg-value-offset+))
  83
  84 ;; One should never call this function on an arg whose value is already set
  85 (defun (setf arg-value)
  86     (value arg &optional (type (type-from-number (arg-type arg))))
  87   (funcall (get-writer-function type) value arg +arg-value-offset+)
  88   value)
  89
  90 (defun (setf return-arg-value)
  91     (value arg &optional (type (type-from-number (arg-type arg))))
  92   ; this is probably causing a memory leak
  93   (funcall (get-writer-function type) value (arg-value arg 'pointer) 0)
  94   value)
  95
  96 (defun arg-array-ref (arg0 index)
  97   (system:sap+ arg0 (* index +arg-size+)))
  98
  99
 100 ;;;; Superclass for the gtk class hierarchy
 101
 102 (eval-when (:compile-toplevel :load-toplevel :execute)
 103   (defclass object (gobject)
 104     ()
 105 ;   ((flags
 106 ;     :allocation :alien
 107 ;     :accessor object-flags
 108 ;     :type object-flags))
 109     (:metaclass gobject-class)
 110     (:alien-name "GtkObject")))
 111
 112
 113 (defmethod shared-initialize ((object object) names &rest initargs &key signals)
 114   (declare (ignore initargs names))
 115   (call-next-method)
 116   (dolist (signal signals)
 117     (apply #'signal-connect object signal)))
 118
 119
 120 (defmethod initialize-instance :after ((object object) &rest initargs &key)
 121   (declare (ignore initargs))
 122 ;  (object-default-construct object)
 123   (reference-instance object)
 124   (object-sink object))
 125
 126
 127 (defmethod from-alien-initialzie-instance ((object object) &rest initargs)
 128   (declare (ignore initargs))
 129   (call-next-method)
 130   (object-sink object))
 131
 132
 133 (define-foreign object-sink () nil
 134   (object object))
 135
 136
 137 ;;;; Main loop, timeouts and idle functions
 138
 139 (declaim (inline events-pending-p main-iteration))
 140
 141 (define-foreign ("gtk_events_pending" events-pending-p) () boolean)
 142
 143 (define-foreign get-current-event () gdk:event)
 144
 145 (define-foreign main-do-event () nil
 146   (event gdk:event))
 147
 148 (define-foreign main () nil)
 149
 150 (define-foreign main-level () int)
 151
 152 (define-foreign main-quit () nil)
 153
 154 (define-foreign
 155     ("gtk_main_iteration_do" main-iteration) (&optional (blocking t)) boolean
 156   (blocking boolean))
 157
 158 (defun main-iterate-all (&rest args)
 159   (declare (ignore args))
 160   (when (events-pending-p)
 161     (main-iteration nil)
 162     (main-iterate-all)))
 163
 164 ; (define-foreign ("gtk_timeout_add_full" timeout-add)
 165 ;     (interval function) unsigned-int
 166 ;   (interval (unsigned 32))
 167 ;   (0 unsigned-long)
 168 ;   (*callback-marshal* pointer)
 169 ;   ((register-callback-function function) unsigned-long)
 170 ;   (*destroy-marshal* pointer))
 171
 172 ; (define-foreign timeout-remove () nil
 173 ;   (timeout-handler-id unsigned-int))
 174
 175 ; (define-foreign ("gtk_idle_add_full" idle-add)
 176 ;     (function &optional (priority 200)) unsigned-int
 177 ;   (priority int)
 178 ;   (0 unsigned-long)
 179 ;   (*callback-marshal* pointer)
 180 ;   ((register-callback-function function) unsigned-long)
 181 ;   (*destroy-marshal* pointer))
 182
 183 ; (define-foreign idle-remove () nil
 184 ;   (idle-handler-id unsigned-int))
 185
 186
 187 (system:add-fd-handler (gdk:event-poll-fd) :input #'main-iterate-all)
 188 (setq lisp::*periodic-polling-function* #'main-iterate-all)
 189 (setq lisp::*max-event-to-sec* 0)
 190 (setq lisp::*max-event-to-usec* 1000)
 191
 192
 193
 194 ;;;; Metaclass used for subclasses of object
 195
 196 (eval-when (:compile-toplevel :load-toplevel :execute)
 197   (defclass object-class (gobject-class)))
 198
 199
 200 (defmethod validate-superclass ((class object-class)
 201                                 (super pcl::standard-class))
 202   (subtypep (class-name super) 'object))
 203
 204
 205 ;;;; Metaclasses used for widgets and containers
 206
 207 (eval-when (:compile-toplevel :load-toplevel :execute)
 208   (defclass widget-class (object-class))
 209
 210   (defclass container-class (widget-class)
 211     (child-class)))
 212
 213
 214 (defvar *child-to-container-class-mappings* (make-hash-table))
 215
 216 (defmethod shared-initialize ((class container-class) names
 217                               &rest initargs &key name child-class)
 218   (declare (ignore initargs))
 219   (call-next-method)
 220   (with-slots ((child-class-slot child-class)) class
 221     (setf
 222      child-class-slot
 223      (or
 224       (first child-class)
 225       (intern (format nil "~A-CHILD" (or name (class-name class)))))
 226      (gethash child-class-slot *child-to-container-class-mappings*)
 227      class)))
 228
 229
 230 (defmethod validate-superclass ((class widget-class)
 231                                 (super pcl::standard-class))
 232   (subtypep (class-name super) 'widget))
 233
 234 (defmethod validate-superclass ((class container-class)
 235                                 (super pcl::standard-class))
 236   (subtypep (class-name super) 'container))
 237
 238
 239
 240 ;;;; Metaclass for child classes
 241
 242 (eval-when (:compile-toplevel :load-toplevel :execute)
 243   (defclass child-class (virtual-class))
 244
 245   (defclass direct-child-slot-definition (direct-virtual-slot-definition))
 246
 247   (defclass effective-child-slot-definition
 248     (effective-virtual-slot-definition)))
 249
 250
 251 (defmethod initialize-instance  ((slotd direct-child-slot-definition)
 252                                  &rest initargs &key)
 253   (declare (ignore initargs))
 254   (call-next-method)
 255   (unless (slot-boundp slotd 'location)
 256     (with-slots (pcl::name location pcl::class) slotd
 257       (setf
 258        location
 259        (format nil "~A::~A"
 260         (alien-type-name
 261          (gethash (class-name pcl::class) *child-to-container-class-mappings*))
 262         (name-to-string pcl::name))))))
 263
 264
 265 (defmethod direct-slot-definition-class ((class child-class) initargs)
 266   (case (getf initargs :allocation)
 267     (:arg (find-class 'direct-child-slot-definition))
 268     (t (call-next-method))))
 269
 270
 271 (defmethod effective-slot-definition-class ((class child-class) initargs)
 272   (case (getf initargs :allocation)
 273     (:arg (find-class 'effective-child-slot-definition))
 274     (t (call-next-method))))
 275
 276
 277 (defmethod compute-virtual-slot-location
 278     ((class child-class) (slotd effective-child-slot-definition) direct-slotds)
 279   (with-slots (type) slotd
 280     (let ((location (slot-definition-location (first direct-slotds)))
 281           (type-number (find-type-number type))
 282           (reader (get-reader-function type))
 283           (writer (get-writer-function type))
 284           (destroy (get-destroy-function type)))
 285       (list
 286        #'(lambda (object)
 287            (with-slots (parent child) object
 288              (with-gc-disabled
 289                (let ((arg (arg-new type-number)))
 290                  (setf (arg-name arg) location)
 291                  (container-child-get-arg parent child arg)
 292                  (prog1
 293                      (funcall reader arg +arg-value-offset+)
 294                    (arg-free arg t t))))))
 295        #'(lambda (value object)
 296            (with-slots (parent child) object
 297              (with-gc-disabled
 298                (let ((arg (arg-new type-number)))
 299                  (setf (arg-name arg) location)
 300                  (funcall writer value arg +arg-value-offset+)
 301                  (container-child-set-arg parent child arg)
 302                  (funcall destroy arg +arg-value-offset+)
 303                  (arg-free arg nil)
 304                  value))))))))
 305
 306
 307 (defmethod pcl::add-reader-method ((class child-class) generic-function slot-name)
 308   (add-method
 309    generic-function
 310    (make-instance 'standard-method
 311                   :specializers (list (find-class 'widget))
 312                   :lambda-list '(widget)
 313                   :function #'(lambda (args next-methods)
 314                                 (declare (ignore next-methods))
 315                                 (child-slot-value (first args) slot-name)))))
 316
 317 (defmethod pcl::add-writer-method
 318     ((class child-class) generic-function slot-name)
 319   (add-method
 320    generic-function
 321    (make-instance 'standard-method
 322                   :specializers (list (find-class t) (find-class 'widget))
 323                   :lambda-list '(value widget)
 324                   :function #'(lambda (args next-methods)
 325                                 (declare (ignore next-methods))
 326                                 (destructuring-bind (value widget) args
 327                                   (setf
 328                                    (child-slot-value widget slot-name)
 329                                    value))))))
 330
 331
 332 (defmethod validate-superclass ((class child-class) (super pcl::standard-class))
 333   (subtypep (class-name super) 'container-child))
 334
 335