mdw@git.distorted.org.uk Git - clg/blob - glib/alien/callback.c

   1 /* Common Lisp bindings for GTK+ v2.0
   2  * Copyright (C) 1999-2002 Espen S. Johnsen <espen@users.sourceforge.net>
   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
  19 /* $Id: callback.c,v 1.1 2004-10-27 15:07:27 espen Exp $ */
  20
  21 #include <glib-object.h>
  22
  23 #ifdef CMUCL
  24 #include "lisp.h"
  25 #include "alloc.h"
  26 #include "arch.h"
  27
  28 lispobj callback_trampoline;
  29 lispobj destroy_user_data;
  30 #endif
  31
  32
  33 void callback_marshal (guint callback_id, GValue *return_value,
  34                        guint n_params, const GValue *param_values)
  35 {
  36 #ifdef CMUCL
  37   funcall3 (callback_trampoline, alloc_number ((unsigned int)callback_id),
  38             alloc_cons (alloc_number (n_params), alloc_sap (param_values)),
  39             alloc_sap (return_value));
  40 #elif defined(CLISP)
  41   callback_trampoline ((unsigned long)callback_id,
  42                        n_params, (unsigned int)param_values,
  43                        (unsigned int)return_value);
  44 #endif
  45 }
  46
  47 void destroy_notify (gpointer data)
  48 {
  49 #ifdef CMUCL
  50   funcall1 (destroy_user_data, alloc_number ((unsigned long)data));
  51 #elif defined(CLISP)
  52   destroy_user_data ((unsigned long)data);
  53 #endif
  54 }
  55
  56 /* #ifndef CMUCL */
  57 /* void* */
  58 /* destroy_notify_address () */
  59 /* { */
  60 /*   return (void*)destroy_notify; */
  61 /* } */
  62 /* #endif */
  63
  64
  65
  66 void closure_callback_marshal (GClosure *closure,
  67                                GValue *return_value,
  68                                guint n_params,
  69                                const GValue *param_values,
  70                                gpointer invocation_hint,
  71                                gpointer marshal_data)
  72 {
  73   callback_marshal ((guint)closure->data, return_value, n_params, param_values);
  74 }
  75
  76 void closure_destroy_notify (gpointer data, GClosure *closure)
  77 {
  78   destroy_notify (data);
  79 }
  80
  81 GClosure*
  82 g_lisp_callback_closure_new (guint callback_id)
  83 {
  84   GClosure *closure;
  85
  86   closure = g_closure_new_simple (sizeof (GClosure), (gpointer)callback_id);
  87   g_closure_set_marshal (closure, closure_callback_marshal);
  88   g_closure_add_finalize_notifier (closure, (gpointer)callback_id, closure_destroy_notify);
  89
  90   return closure;
  91 }
  92
  93
  94 gboolean source_callback_marshal (gpointer data)
  95 {
  96   GValue return_value;
  97
  98   memset (&return_value, 0, sizeof (GValue));
  99   g_value_init (&return_value, G_TYPE_BOOLEAN);
 100   callback_marshal ((guint)data, &return_value, 0, NULL);
 101
 102   return g_value_get_boolean (&return_value);
 103 }
 104
 105
 106
 107 GEnumValue*
 108 g_enum_class_values (GEnumClass *class, guint *n_values)
 109 {
 110   *n_values = class->n_values;
 111   return class->values;
 112 }
 113
 114 GFlagsValue*
 115 g_flags_class_values (GFlagsClass *class, guint *n_values)
 116 {
 117   *n_values = class->n_values;
 118   return class->values;
 119 }
 120