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

   1 ;; Common Lisp bindings for GTK+ v1.2.x
   2 ;; Copyright (C) 1999 Espen S. Johnsen <espejohn@online.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: glib.lisp,v 1.3 2000-08-22 23:13:39 espen Exp $
  19
  20
  21 (in-package "GLIB")
  22 (use-prefix "g")
  23
  24
  25 ;;;; Memory management
  26
  27 (define-foreign ("g_malloc0" allocate-memory) () pointer
  28   (size unsigned-long))
  29
  30 (define-foreign ("g_realloc" reallocate-memory) () pointer
  31   (address pointer)
  32   (size unsigned-long))
  33
  34 (define-foreign ("g_free" deallocate-memory) () nil
  35   (address pointer))
  36
  37 (defun copy-memory (from length &optional (to (allocate-memory length)))
  38   (kernel:system-area-copy from 0 to 0 (* 8 length))
  39   to)
  40
  41
  42
  43 ;;;; Quarks
  44
  45 (deftype quark () 'unsigned)
  46
  47 (define-foreign %quark-get-reserved () quark)
  48
  49 (defvar *quark-from-object* (make-hash-table))
  50 (defvar *quark-to-object* (make-hash-table))
  51
  52 (defun quark-from-object (object &key (test #'eq))
  53   (let ((hash-code (sxhash object)))
  54     (or
  55      (assoc-ref object (gethash hash-code *quark-from-object*) :test test)
  56      (let ((quark (%quark-get-reserved)))
  57        (push (cons object quark) (gethash hash-code *quark-from-object*))
  58        (setf (gethash quark *quark-to-object*) object)
  59        quark))))
  60
  61 (defun quark-to-object (quark)
  62   (gethash quark *quark-to-object*))
  63
  64 (defun remove-quark (quark)
  65   (let* ((object (gethash quark *quark-to-object*))
  66          (hash-code (sxhash object)))
  67     (remhash quark *quark-to-object*)
  68     (unless (setf
  69              (gethash hash-code *quark-from-object*)
  70              (assoc-delete object (gethash hash-code *quark-from-object*)))
  71       (remhash hash-code *quark-from-object*))))
  72
  73
  74
  75 ;;;; Linked list
  76
  77 (deftype glist () 'pointer)
  78 (deftype double-list (type) `(or (null (cons ,type list))))
  79
  80
  81 (define-foreign ("g_list_append" %glist-append) () glist
  82   (glist glist)
  83   (data unsigned))
  84
  85 (defmacro glist-append (glist value type-spec)
  86   (ecase (first (mklist (translate-type-spec type-spec)))
  87     (unsigned `(%glist-append ,glist ,value))
  88 ;    (signed `(%glist-append ,glist (signed-to-unsigned ,value)))
  89     (system-area-pointer `(%glist-append ,glist (system:sap-int ,value)))))
  90
  91
  92 (defmacro glist-data (glist type-spec)
  93   (ecase (first (mklist (translate-type-spec type-spec)))
  94     (unsigned `(sap-ref-unsigned ,glist 0))
  95     (signed `(sap-ref-signed ,glist 0))
  96     (system-area-pointer `(sap-ref-sap ,glist 0))))
  97
  98
  99 (defun glist-next (glist)
 100   (unless (null-pointer-p glist)
 101     (sap-ref-sap glist +size-of-sap+)))
 102
 103
 104 (define-foreign ("g_list_free" glist-free) () nil
 105   (glist pointer))
 106
 107
 108 (deftype-method translate-type-spec double-list (type-spec)
 109   (declare (ignore type-spec))
 110   'system-area-pointer)
 111
 112 (deftype-method translate-to-alien double-list (type-spec list &optional copy)
 113   (declare (ignore copy))
 114   (let* ((element-type-spec (second (type-expand-to 'double-list type-spec)))
 115          (to-alien (translate-to-alien element-type-spec 'element t)))
 116     `(let ((glist (make-pointer 0)))
 117        (dolist (element ,list glist)
 118          (setq glist (glist-append glist ,to-alien ,element-type-spec))))))
 119
 120 (deftype-method
 121     translate-from-alien
 122     double-list (type-spec glist &optional (alloc :dynamic))
 123   (let ((element-type-spec (second (type-expand-to 'double-list type-spec))))
 124     `(let ((glist ,glist)
 125            (list nil))
 126        (do ((tmp glist (glist-next tmp)))
 127            ((null-pointer-p tmp))
 128          (push
 129           ,(translate-from-alien
 130             element-type-spec `(glist-data tmp ,element-type-spec) alloc)
 131           list))
 132        ,(when (eq alloc :dynamic)
 133           '(glist-free glist))
 134        (nreverse list))))
 135
 136 (deftype-method cleanup-alien double-list (type-spec glist &optional copied)
 137   (declare (ignore copied))
 138   (let* ((element-type-spec (second (type-expand-to 'double-list type-spec)))
 139          (alien-type-spec (translate-type-spec element-type-spec)))
 140     `(let ((glist ,glist))
 141        (unless (null-pointer-p glist)
 142          ,(when (eq alien-type-spec 'system-area-pointer)
 143             `(do ((tmp glist (glist-next tmp)))
 144                  ((null-pointer-p tmp))
 145                ,(cleanup-alien
 146                  element-type-spec `(glist-data tmp ,element-type-spec) t)))
 147          (glist-free glist)))))
 148
 149
 150
 151 ;;; Array
 152 #|
 153 (define-foreign ("g_array_new" %array-new) () garray
 154   (zero-terminated boolean)
 155   (clear boolean)
 156   (element-size unsigned-int))
 157
 158 (defun array-new (&key zero-terminated clear (element-size 4) initial-contents)
 159   (let ((array (%array-new zero-terminated clear element-size)))
 160     (when initial-contents
 161       (dolist (element initial-contents)
 162         (array-append array element)))
 163     array))
 164
 165 (define-foreign ("g_array_free" %array-free) () none
 166   (array garray)
 167   (free-segment boolean))
 168
 169 (defun array-free (array &optional free-data (free-segment t))
 170   (when free-data
 171     (dotimes (i (array-get-size array))
 172       (free (array-get-pointer array i))))
 173   (%array-free array free-segment))
 174
 175 (defmacro with-array (binding &body body)
 176   (let ((array (gensym)))
 177     (destructuring-bind (var &rest args
 178                          &key (free-contents nil) (free-segment t)
 179                          &allow-other-keys )
 180         binding
 181       (remf args :free-contents)
 182       (remf args :free-segment)
 183       `(let* ((,array (array-new ,@args))
 184               (,var (array-get-data ,array)))
 185          (unwind-protect
 186              ,@body
 187            (array-free ,array ,free-contents ,free-segment))))))
 188
 189 ;; cl-gtk.c
 190 (define-foreign ("g_array_insert_int" array-insert-int) () garray
 191   (array garray)
 192   (index unsigned-int)
 193   (value int))
 194
 195 (defun array-insert-value (array index value)
 196   (etypecase value
 197     (null (array-insert-int array index 0))
 198     (integer (array-insert-int array index value))
 199     (string (array-insert-int array index (sap-int (gforeign::pointer-to-sap (%strdup value)))))
 200     (pointer (array-insert-int array index (sap-int (gforeign::pointer-to-sap value))))))
 201
 202 (defun array-prepend (array value)
 203   (array-insert-value array 0 value))
 204
 205 (defun array-append (array value)
 206   (array-insert-value array (array-get-size array) value))
 207
 208 ;; cl-gtk.c
 209 (define-foreign ("g_array_get_int" array-get-int) () int
 210   (array garray)
 211   (index unsigned-int))
 212
 213 (defun array-get-pointer (array index)
 214   (gforeign::sap-to-pointer (int-sap (array-get-int array index))))
 215
 216 ;; cl-gtk.c
 217 (define-foreign ("g_array_get_data" array-get-data) () pointer
 218   (array garray))
 219
 220 (define-foreign ("g_array_set_size" array-set-size) () garray
 221   (array garray)
 222   (size unsigned-int))
 223
 224 ;; cl-gtk.c
 225 (define-foreign ("g_array_get_size" array-get-size) () int
 226   (array garray))
 227 |#