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

   1 ;; Common Lisp bindings for GTK+ v2.x
   2 ;; Copyright 1999-2005 Espen S. Johnsen <espen@users.sf.net>
   3 ;;
   4 ;; Permission is hereby granted, free of charge, to any person obtaining
   5 ;; a copy of this software and associated documentation files (the
   6 ;; "Software"), to deal in the Software without restriction, including
   7 ;; without limitation the rights to use, copy, modify, merge, publish,
   8 ;; distribute, sublicense, and/or sell copies of the Software, and to
   9 ;; permit persons to whom the Software is furnished to do so, subject to
  10 ;; the following conditions:
  11 ;;
  12 ;; The above copyright notice and this permission notice shall be
  13 ;; included in all copies or substantial portions of the Software.
  14 ;;
  15 ;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16 ;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17 ;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  18 ;; IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  19 ;; CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  20 ;; TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  21 ;; SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  22
  23 ;; $Id: gtkobject.lisp,v 1.33 2006-02-28 16:34:37 espen Exp $
  24
  25
  26 (in-package "GTK")
  27
  28
  29 ;;;; Superclass for the gtk class hierarchy
  30
  31 (eval-when (:compile-toplevel :load-toplevel :execute)
  32   (init-types-in-library
  33    #.(concatenate 'string (pkg-config:pkg-variable "gtk+-2.0" "libdir")
  34                           "/libgtk-x11-2.0.so"))
  35
  36   (defclass %object (gobject)
  37     ()
  38     (:metaclass gobject-class)
  39     (:gtype |gtk_object_get_type|)))
  40
  41
  42 (defmethod initialize-instance ((object %object) &rest initargs &key signal)
  43   (declare (ignore signal))
  44   (call-next-method)
  45   (dolist (signal-definition (get-all initargs :signal))
  46     (apply #'signal-connect object signal-definition)))
  47
  48 (defmethod initialize-instance :around ((object %object) &rest initargs)
  49   (declare (ignore initargs))
  50   (call-next-method)
  51   ;; Add a temorary reference which will be removed when the object is
  52   ;; sinked
  53   (reference-foreign (class-of object) (foreign-location object))
  54   (%object-sink object))
  55
  56 (defbinding %object-sink () nil
  57   (object %object))
  58
  59 ;;;; Main loop and event handling
  60
  61 (declaim (inline events-pending-p main-iteration))
  62
  63 (defbinding events-pending-p () boolean)
  64
  65 (defbinding get-current-event () gdk:event)
  66
  67 (defbinding main-do-event () nil
  68   (event gdk:event))
  69
  70 (defbinding main () nil)
  71
  72 (defbinding main-level () int)
  73
  74 (defbinding main-quit () nil)
  75
  76 (defbinding main-iteration-do (&optional (blocking t)) boolean
  77   (blocking boolean))
  78
  79 (defun main-iterate-all (&rest args)
  80   (declare (ignore args))
  81   (loop
  82    while (events-pending-p)
  83    do (main-iteration-do nil)))
  84
  85
  86 ;;;; Metaclass for child classes
  87
  88 (defvar *container-to-child-class-mappings* (make-hash-table))
  89
  90 (eval-when (:compile-toplevel :load-toplevel :execute)
  91   (defclass child-class (virtual-slots-class)
  92     ())
  93
  94   (defclass direct-child-slot-definition (direct-virtual-slot-definition)
  95     ((pname :reader slot-definition-pname :initarg :pname)))
  96
  97   (defclass effective-child-slot-definition (effective-virtual-slot-definition)
  98     ((pname :reader slot-definition-pname :initarg :pname)))
  99
 100
 101 (defmethod shared-initialize ((class child-class) names &key container)
 102   (call-next-method)
 103   (setf
 104    (gethash (find-class (first container)) *container-to-child-class-mappings*)
 105     class))
 106
 107 (defmethod direct-slot-definition-class ((class child-class) &rest initargs)
 108   (case (getf initargs :allocation)
 109     (:property (find-class 'direct-child-slot-definition))
 110     (t (call-next-method))))
 111
 112 (defmethod effective-slot-definition-class ((class child-class) &rest initargs)
 113   (case (getf initargs :allocation)
 114     (:property (find-class 'effective-child-slot-definition))
 115     (t (call-next-method))))
 116
 117 (defmethod compute-effective-slot-definition-initargs ((class child-class) direct-slotds)
 118   (if (eq (slot-definition-allocation (first direct-slotds)) :property)
 119       (nconc
 120        (list :pname (most-specific-slot-value direct-slotds 'pname))
 121        (call-next-method))
 122     (call-next-method)))
 123
 124
 125 (defmethod initialize-internal-slot-functions ((slotd effective-child-slot-definition))
 126   (let ((type (slot-definition-type slotd))
 127         (pname (slot-definition-pname slotd)))
 128     (setf
 129      (slot-value slotd 'getter)
 130      #'(lambda (object)
 131          (with-slots (parent child) object
 132            (let ((gvalue (gvalue-new type)))
 133              (%container-child-get-property parent child pname gvalue)
 134              (unwind-protect
 135                  (funcall (reader-function type) gvalue +gvalue-value-offset+)
 136                (gvalue-free gvalue t))))))
 137
 138     (setf
 139      (slot-value slotd 'setter)
 140      #'(lambda (value object)
 141          (with-slots (parent child) object
 142            (let ((gvalue (gvalue-new type)))
 143              (funcall (writer-function type) value gvalue +gvalue-value-offset+)
 144              (%container-child-set-property parent child pname gvalue)
 145              (gvalue-free gvalue t)
 146              value)))))
 147
 148   (call-next-method)))
 149
 150
 151 (defmethod add-reader-method ((class child-class) generic-function slot-name)
 152   (add-method
 153    generic-function
 154    (make-instance 'standard-method
 155     :specializers (list (find-class 'widget))
 156     :lambda-list '(widget)
 157     :function #'(lambda (args next-methods)
 158                   (declare (ignore next-methods))
 159                   (child-property-value (first args) slot-name)))))
 160
 161 (defmethod add-writer-method
 162     ((class child-class) generic-function slot-name)
 163   (add-method
 164    generic-function
 165    (make-instance 'standard-method
 166     :specializers (list (find-class t) (find-class 'widget))
 167     :lambda-list '(value widget)
 168     :function #'(lambda (args next-methods)
 169                   (declare (ignore next-methods))
 170                   (destructuring-bind (value widget) args
 171                     (setf (child-property-value widget slot-name) value))))))
 172
 173
 174 (defmethod validate-superclass ((class child-class) (super standard-class))
 175   ;(subtypep (class-name super) 'container-child)
 176   t)
 177
 178
 179 (defclass container-child ()
 180   ((parent :initarg :parent :type container)
 181    (child :initarg :child :type widget)))
 182
 183
 184 ;;;;
 185
 186 (defbinding %container-class-list-child-properties () pointer
 187   (class pointer)
 188   (n-properties unsigned-int :out))
 189
 190 (defun query-container-class-child-properties (type-number)
 191   (let ((class (type-class-ref type-number)))
 192     (multiple-value-bind (array length)
 193         (%container-class-list-child-properties class)
 194       (unwind-protect
 195           (map-c-vector 'list #'identity array 'param length)
 196         (deallocate-memory array)))))
 197
 198 (defun default-container-child-name (container-class)
 199   (intern (format nil "~A-CHILD" container-class)))
 200
 201 (defun expand-container-type (type forward-p options)
 202   (let* ((class (type-from-number type))
 203          (super (supertype type))
 204          (child-class (default-container-child-name class)))
 205     (if forward-p
 206         (expand-gobject-type type t options)
 207       `(progn
 208          ,(expand-gobject-type type nil options)
 209          (defclass ,child-class (,(default-container-child-name super))
 210            ,(slot-definitions child-class
 211              (query-container-class-child-properties type) nil)
 212            (:metaclass child-class)
 213            (:container ,class))))))
 214
 215
 216 (register-derivable-type 'container "GtkContainer" 'expand-container-type 'gobject-dependencies)