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 1.42 2007-06-06 10:43:54 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 gtk "libgtk-2.0")
  33
  34   (defclass %object (gobject)
  35     ()
  36     (:metaclass gobject-class)
  37     (:gtype |gtk_object_get_type|)))
  38
  39
  40 (defmethod initialize-instance ((object %object) &rest initargs &key signal)
  41   (declare (ignore signal))
  42   (call-next-method)
  43   (dolist (signal-definition (get-all initargs :signal))
  44     (apply #'signal-connect object signal-definition)))
  45
  46 (defmethod initialize-instance :around ((object %object) &rest initargs)
  47   (declare (ignore initargs))
  48   (call-next-method)
  49   ;; Add a temorary reference which will be removed when the object is
  50   ;; sinked
  51   (funcall (reference-function '%object) (foreign-location object))
  52   (%object-sink object))
  53
  54 (defbinding %object-sink () nil
  55   (object %object))
  56
  57 ;;;; Main loop and event handling
  58
  59 (defbinding events-pending-p () boolean)
  60
  61 (defbinding get-current-event () gdk:event)
  62
  63 (defbinding main-do-event () nil
  64   (event gdk:event))
  65
  66 (defbinding main () nil)
  67
  68 (defbinding main-level () int)
  69
  70 (defbinding main-quit () nil)
  71
  72 (defbinding main-iteration-do (&optional (blocking t)) boolean
  73   (blocking boolean))
  74
  75 (defun main-iterate-all (&rest args)
  76   (declare (ignore args))
  77   (loop
  78    while (events-pending-p)
  79    do (main-iteration-do nil))
  80   #+clisp 0)
  81
  82
  83 ;;;; Metaclass for child classes
  84
  85 (defvar *container-to-child-class-mappings* (make-hash-table))
  86
  87 (eval-when (:compile-toplevel :load-toplevel :execute)
  88   (defclass container-child-class (virtual-slots-class)
  89     ())
  90
  91   (defclass direct-child-slot-definition (direct-virtual-slot-definition)
  92     ((pname :reader slot-definition-pname :initarg :pname)))
  93
  94   (defclass effective-child-slot-definition (effective-virtual-slot-definition)
  95     ((pname :reader slot-definition-pname :initarg :pname))))
  96
  97
  98 (defmethod shared-initialize ((class container-child-class) names &key container)
  99   (declare (ignore names))
 100   (call-next-method)
 101   (setf
 102    (gethash (find-class (first container)) *container-to-child-class-mappings*)
 103     class)
 104   #+clisp
 105   (loop
 106    for slotd in (class-direct-slots class)
 107    when (typep slotd 'direct-child-slot-definition)
 108    do (loop
 109        for reader in (slot-definition-readers slotd)
 110        do (add-reader-method class
 111            (ensure-generic-function reader :lambda-list '(object))
 112            (slot-definition-name slotd)))
 113       (loop
 114        for writer in (slot-definition-writers slotd)
 115        do (add-writer-method class
 116            (ensure-generic-function writer :lambda-list '(value object))
 117            (slot-definition-name slotd)))))
 118
 119 (defmethod direct-slot-definition-class ((class container-child-class) &rest initargs)
 120   (case (getf initargs :allocation)
 121     (:property (find-class 'direct-child-slot-definition))
 122     (t (call-next-method))))
 123
 124 (defmethod effective-slot-definition-class ((class container-child-class) &rest initargs)
 125   (case (getf initargs :allocation)
 126     (:property (find-class 'effective-child-slot-definition))
 127     (t (call-next-method))))
 128
 129 (defmethod compute-effective-slot-definition-initargs ((class container-child-class) direct-slotds)
 130   (if (eq (slot-definition-allocation (first direct-slotds)) :property)
 131       (nconc
 132        (list :pname (most-specific-slot-value direct-slotds 'pname))
 133        (call-next-method))
 134     (call-next-method)))
 135
 136 (defmethod slot-readable-p ((slotd effective-child-slot-definition))
 137   (declare (ignore slotd))
 138   t)
 139
 140 (defmethod compute-slot-reader-function ((slotd effective-child-slot-definition) &optional signal-unbound-p)
 141   (declare (ignore signal-unbound-p))
 142   (let* ((type (slot-definition-type slotd))
 143          (pname (slot-definition-pname slotd))
 144          (reader (reader-function type :ref :get)))
 145     #'(lambda (object)
 146         (with-slots (parent child) object
 147           (with-memory (gvalue +gvalue-size+)
 148             (glib::%gvalue-init gvalue (find-type-number type))
 149             (%container-child-get-property parent child pname gvalue)
 150             (funcall reader gvalue +gvalue-value-offset+))))))
 151
 152 (defmethod slot-writable-p ((slotd effective-child-slot-definition))
 153   (declare (ignore slotd))
 154   t)
 155
 156 (defmethod compute-slot-writer-function ((slotd effective-child-slot-definition))
 157   (let* ((type (slot-definition-type slotd))
 158          (pname (slot-definition-pname slotd))
 159          (writer (writer-function type :temp t))
 160          (destroy (destroy-function type :temp t)))
 161     #'(lambda (value object)
 162         (with-slots (parent child) object
 163           (with-memory (gvalue +gvalue-size+)
 164             (glib::%gvalue-init gvalue (find-type-number type))
 165             (funcall writer value gvalue +gvalue-value-offset+)
 166             (%container-child-set-property parent child pname gvalue)
 167             (funcall destroy gvalue +gvalue-value-offset+))
 168           value))))
 169
 170
 171 (defmethod add-reader-method ((class container-child-class) generic-function slot-name #?(sbcl>= 1 0 2)slot-documentation)
 172   (add-method
 173    generic-function
 174    (make-instance 'standard-method
 175     :specializers (list (find-class 'widget))
 176     :lambda-list '(widget)
 177     :documentation (or #?(sbcl>= 1 0 2)slot-documentation "automatically generated reader method")
 178     :function #'(lambda (args next-methods)
 179                   (declare (ignore next-methods))
 180                   (child-property-value (first args) slot-name)))))
 181
 182 (defmethod add-writer-method ((class container-child-class) generic-function slot-name #?(sbcl>= 1 0 2)slot-documentation)
 183   (add-method
 184    generic-function
 185    (make-instance 'standard-method
 186     :specializers (list (find-class t) (find-class 'widget))
 187     :lambda-list '(value widget)
 188     :documentation (or #?(sbcl>= 1 0 2)slot-documentation "automatically generated reader method")
 189     :function #'(lambda (args next-methods)
 190                   (declare (ignore next-methods))
 191                   (destructuring-bind (value widget) args
 192                     (setf (child-property-value widget slot-name) value))))))
 193
 194
 195 (defmethod validate-superclass ((class container-child-class) (super standard-class))
 196   ;(subtypep (class-name super) 'container-child)
 197   t)
 198
 199
 200 (defclass container-child (virtual-slots-object)
 201   ((parent :initarg :parent :type container)
 202    (child :initarg :child :type widget)))
 203
 204
 205 ;;;;
 206
 207 (defbinding %container-class-list-child-properties () pointer
 208   (class pointer)
 209   (n-properties unsigned-int :out))
 210
 211 (defun query-container-class-child-properties (type-number)
 212   (let ((class (type-class-ref type-number)))
 213     (multiple-value-bind (array length)
 214         (%container-class-list-child-properties class)
 215       (unwind-protect
 216           (map-c-vector 'list #'identity array 'param length)
 217         (deallocate-memory array)))))
 218
 219 (defun default-container-child-name (container-class)
 220   (intern (format nil "~A-CHILD" container-class)))
 221
 222 (defun expand-container-type (type forward-p options)
 223   (let* ((class (type-from-number type))
 224          (super (supertype type))
 225          (child-class (default-container-child-name class)))
 226     (if forward-p
 227         (expand-gobject-type type t options)
 228       `(progn
 229          ,(expand-gobject-type type nil options)
 230          (defclass ,child-class (,(default-container-child-name super))
 231            ,(slot-definitions child-class
 232              (query-container-class-child-properties type) nil)
 233            (:metaclass container-child-class)
 234            (:container ,class))))))
 235
 236 (defun container-child-class (container-class)
 237   (gethash container-class *container-to-child-class-mappings*))
 238
 239 (defun container-dependencies (type options)
 240   (delete-duplicates
 241    (append
 242     (gobject-dependencies type options)
 243     (mapcar #'param-value-type (query-container-class-child-properties type)))))
 244
 245 (register-derivable-type 'container "GtkContainer" 'expand-container-type 'container-dependencies)