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

   1 ;; Common Lisp bindings for GTK+ v2.0
   2 ;; Copyright (C) 1999-2001 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: gtkobject.lisp,v 1.10 2001-10-21 23:18:11 espen Exp $
  19
  20
  21 (in-package "GTK")
  22
  23
  24 ;;;; Misc utils
  25
  26 ; (defun name-to-string (name)
  27 ;   (substitute #\_ #\- (string-downcase (string name))))
  28
  29 ; (defun string-to-name (name &optional (package "KEYWORD"))
  30 ;   (intern (substitute #\- #\_ (string-upcase name)) package))
  31
  32
  33
  34 ;;;; Superclass for the gtk class hierarchy
  35
  36 (eval-when (:compile-toplevel :load-toplevel :execute)
  37   (init-types-in-library
  38    "/opt/gnome/lib/libgtk-x11-1.3.so"
  39    :ignore ("gtk_window_get_type_hint"))
  40
  41   (defclass %object (gobject)
  42     ()
  43     (:metaclass gobject-class)
  44     (:alien-name "GtkObject")))
  45
  46
  47 (defmethod shared-initialize ((object %object) names &rest initargs
  48                               &allow-other-keys)
  49   (declare (ignore names))
  50   (call-next-method)
  51   (funcall (proxy-class-copy (class-of object)) nil (proxy-location object)) ; inc ref count before sinking
  52   (%object-sink object)
  53   (dolist (signal-definition (get-all initargs :signal))
  54     (apply #'signal-connect object signal-definition)))
  55
  56 (defmethod initialize-proxy ((object %object) &rest initargs)
  57   (declare (ignore initargs))
  58   (call-next-method)
  59   (%object-sink object))
  60
  61 (defbinding %object-sink () nil
  62   (object %object))
  63
  64
  65 ;;;; Main loop, timeouts and idle functions
  66
  67 (declaim (inline events-pending-p main-iteration))
  68
  69 (defbinding (events-pending-p "gtk_events_pending") () boolean)
  70
  71 (defbinding get-current-event () gdk:event)
  72
  73 (defbinding main-do-event () nil
  74   (event gdk:event))
  75
  76 (defbinding main () nil)
  77
  78 (defbinding main-level () int)
  79
  80 (defbinding main-quit () nil)
  81
  82 (defbinding main-iteration-do (&optional (blocking t)) boolean
  83   (blocking boolean))
  84
  85 (defun main-iterate-all (&rest args)
  86   (declare (ignore args))
  87   (when (events-pending-p)
  88     (main-iteration-do nil)
  89     (main-iterate-all)))
  90
  91 (system:add-fd-handler (gdk:connection-number) :input #'main-iterate-all)
  92 (setq lisp::*periodic-polling-function* #'main-iterate-all)
  93 (setq lisp::*max-event-to-sec* 0)
  94 (setq lisp::*max-event-to-usec* 1000)
  95
  96
  97
  98 ;;;; Metaclass for child classes
  99
 100 (defvar *container-to-child-class-mappings* (make-hash-table))
 101
 102 (eval-when (:compile-toplevel :load-toplevel :execute)
 103   (defclass child-class (virtual-slot-class))
 104
 105   (defclass direct-child-slot-definition (direct-virtual-slot-definition)
 106     ((pname :reader slot-definition-pname)))
 107
 108   (defclass effective-child-slot-definition
 109     (effective-virtual-slot-definition)))
 110
 111
 112 (defmethod shared-initialize ((class child-class) names &rest initargs
 113                               &key container)
 114   (declare (ignore initargs))
 115   (call-next-method)
 116   (setf
 117    (gethash (find-class (first container)) *container-to-child-class-mappings*)
 118     class))
 119
 120 (defmethod initialize-instance  ((slotd direct-child-slot-definition)
 121                                  &rest initargs &key pname)
 122   (declare (ignore initargs))
 123   (call-next-method)
 124   (if pname
 125       (setf (slot-value slotd 'pname) pname)
 126     ; ???
 127     (error "Need pname for slot with allocation :property")))
 128
 129 (defmethod direct-slot-definition-class ((class child-class) initargs)
 130   (case (getf initargs :allocation)
 131     (:property (find-class 'direct-child-slot-definition))
 132     (t (call-next-method))))
 133
 134 (defmethod effective-slot-definition-class ((class child-class) initargs)
 135   (case (getf initargs :allocation)
 136     (:property (find-class 'effective-child-slot-definition))
 137     (t (call-next-method))))
 138
 139 (defbinding %container-child-get-property () nil
 140   (container container)
 141   (child widget)
 142   (property-name string)
 143   (value gvalue))
 144
 145 (defbinding %container-child-set-property () nil
 146   (container container)
 147   (child widget)
 148   (property-name string)
 149   (value gvalue))
 150
 151 (defmethod compute-virtual-slot-accessors
 152     ((class child-class) (slotd effective-child-slot-definition) direct-slotds)
 153   (with-slots (type) slotd
 154     (let ((pname (slot-definition-pname (first direct-slotds)))
 155           (type-number (find-type-number type)))
 156       (list
 157        #'(lambda (object)
 158            (with-slots (parent child) object
 159              (with-gc-disabled
 160                (let ((gvalue (gvalue-new type-number)))
 161                  (%container-child-get-property parent child pname gvalue)
 162                  (unwind-protect
 163                      (funcall
 164                       (intern-reader-function type)
 165                       gvalue +gvalue-value-offset+)
 166                    (gvalue-free gvalue t))))))
 167        #'(lambda (value object)
 168            (with-slots (parent child) object
 169              (with-gc-disabled
 170               (let ((gvalue (gvalue-new type-number)))
 171                 (funcall
 172                  (intern-writer-function type)
 173                  value gvalue +gvalue-value-offset+)
 174                 (%container-child-set-property parent child pname gvalue)
 175                 (funcall
 176                  (intern-destroy-function type)
 177                  gvalue +gvalue-value-offset+)
 178                 (gvalue-free gvalue nil)
 179                 value))))))))
 180
 181
 182 (defmethod pcl::add-reader-method ((class child-class) generic-function slot-name)
 183   (add-method
 184    generic-function
 185    (make-instance 'standard-method
 186                   :specializers (list (find-class 'widget))
 187                   :lambda-list '(widget)
 188                   :function #'(lambda (args next-methods)
 189                                 (declare (ignore next-methods))
 190                                 (child-slot-value (first args) slot-name)))))
 191
 192 (defmethod pcl::add-writer-method
 193     ((class child-class) generic-function slot-name)
 194   (add-method
 195    generic-function
 196    (make-instance 'standard-method
 197                   :specializers (list (find-class t) (find-class 'widget))
 198                   :lambda-list '(value widget)
 199                   :function #'(lambda (args next-methods)
 200                                 (declare (ignore next-methods))
 201                                 (destructuring-bind (value widget) args
 202                                   (setf
 203                                    (child-slot-value widget slot-name)
 204                                    value))))))
 205
 206
 207 (defmethod validate-superclass ((class child-class) (super pcl::standard-class))
 208   ;(subtypep (class-name super) 'container-child)
 209   t)
 210
 211
 212 (defclass container-child ()
 213   ((parent :initarg :parent :type container)
 214    (child :initarg :child :type widget)))
 215
 216
 217 ;;;;
 218
 219 (defbinding %container-class-list-child-properties () pointer
 220   (class pointer)
 221   (n-properties unsigned-int :out))
 222
 223 (defun query-container-class-child-properties (type-number)
 224   (let ((class (type-class-ref type-number)))
 225     (multiple-value-bind (array length)
 226         (%container-class-list-child-properties class)
 227       (unwind-protect
 228           (map-c-array 'list #'identity array 'param length)
 229         (deallocate-memory array)))))
 230
 231 (defun default-container-child-name (container-class)
 232   (intern (format nil "~A-CHILD" container-class)))
 233
 234 (defun expand-container-type (type-number &optional slots)
 235   (let* ((class (type-from-number type-number))
 236          (super (supertype type-number))
 237          (child-class (default-container-child-name class))
 238          (expanded-child-slots
 239           (mapcar
 240            #'(lambda (param)
 241                (with-slots (name flags value-type documentation) param
 242                  (let* ((slot-name (default-slot-name name))
 243                         (slot-type (type-from-number value-type #|t|#))
 244                         (accessor
 245                          (default-slot-accessor class slot-name slot-type)))
 246                    `(,slot-name
 247                      :allocation :property
 248                      :pname ,name
 249                      ,@(cond
 250                         ((and
 251                           (member :writable flags)
 252                           (member :readable flags))
 253                          (list :accessor accessor))
 254                         ((member :writable flags)
 255                          (list :writer `(setf ,accessor)))
 256                         ((member :readable flags)
 257                          (list :reader accessor)))
 258                      ,@(when (or
 259                               (member :construct flags)
 260                               (member :writable flags))
 261                          (list :initarg (intern (string slot-name) "KEYWORD")))
 262                      :type ,slot-type
 263                      ,@(when documentation
 264                          (list :documentation documentation))))))
 265            (query-container-class-child-properties type-number))))
 266     `(progn
 267        ,(expand-gobject-type type-number slots)
 268        (defclass ,child-class
 269          (,(default-container-child-name super))
 270          ,expanded-child-slots
 271          (:metaclass child-class)
 272          (:container ,class)))))
 273
 274 (register-derivable-type 'container "GtkContainer" 'expand-container-type)