forked from AuroraMiddleware/gtk
20715207b4
Sun May 20 20:07:35 2001 Tim Janik <timj@gtk.org>
* gtk/gtksignal.[hc] (gtk_signal_connect_full): make hanlder id a
gulong as in GSignal.
487 lines
16 KiB
C
487 lines
16 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "gtksignal.h"
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#include "gtkargcollector.c"
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#include "gtkmarshal.c"
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/* the real parameter limit is of course given by GSignal, bu we need
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* an upper limit for the implementations. so this should be adjusted
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* with any future changes on the GSignal side of things.
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*/
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#define SIGNAL_MAX_PARAMS 12
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/* --- functions --- */
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guint
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gtk_signal_newv (const gchar *name,
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GtkSignalRunType signal_flags,
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GtkType object_type,
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guint function_offset,
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GtkSignalMarshaller marshaller,
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GtkType return_val,
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guint n_params,
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GtkType *params)
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{
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GClosure *closure;
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g_return_val_if_fail (n_params < SIGNAL_MAX_PARAMS, 0);
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closure = g_signal_type_cclosure_new (object_type, function_offset);
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return g_signal_newv (name, object_type, signal_flags, closure, NULL, NULL, marshaller, return_val, n_params, params);
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}
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guint
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gtk_signal_new (const gchar *name,
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GtkSignalRunType signal_flags,
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GtkType object_type,
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guint function_offset,
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GtkSignalMarshaller marshaller,
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GtkType return_val,
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guint n_params,
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...)
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{
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GtkType *params;
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guint signal_id;
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if (n_params)
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{
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va_list args;
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guint i;
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params = g_new (GtkType, n_params);
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va_start (args, n_params);
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for (i = 0; i < n_params; i++)
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params[i] = va_arg (args, GtkType);
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va_end (args);
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}
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else
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params = NULL;
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signal_id = gtk_signal_newv (name,
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signal_flags,
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object_type,
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function_offset,
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marshaller,
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return_val,
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n_params,
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params);
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g_free (params);
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return signal_id;
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}
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void
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gtk_signal_emit_stop_by_name (GtkObject *object,
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const gchar *name)
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{
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g_return_if_fail (GTK_IS_OBJECT (object));
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g_signal_stop_emission (object, g_signal_lookup (name, G_OBJECT_TYPE (object)), 0);
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}
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void
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gtk_signal_connect_object_while_alive (GtkObject *object,
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const gchar *signal,
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GtkSignalFunc func,
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GtkObject *alive_object)
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{
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g_return_if_fail (GTK_IS_OBJECT (object));
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g_signal_connect_closure_by_id (object,
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g_signal_lookup (signal, G_OBJECT_TYPE (object)), 0,
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g_cclosure_new_object_swap (func, alive_object),
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FALSE);
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}
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void
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gtk_signal_connect_while_alive (GtkObject *object,
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const gchar *signal,
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GtkSignalFunc func,
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gpointer func_data,
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GtkObject *alive_object)
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{
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GClosure *closure;
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g_return_if_fail (GTK_IS_OBJECT (object));
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closure = g_cclosure_new (func, func_data, NULL);
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g_object_watch_closure (G_OBJECT (alive_object), closure);
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g_signal_connect_closure_by_id (object,
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g_signal_lookup (signal, G_OBJECT_TYPE (object)), 0,
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closure,
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FALSE);
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}
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gulong
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gtk_signal_connect_full (GtkObject *object,
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const gchar *name,
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GtkSignalFunc func,
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GtkCallbackMarshal unsupported,
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gpointer data,
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GtkDestroyNotify destroy_func,
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gint object_signal,
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gint after)
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{
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g_return_val_if_fail (GTK_IS_OBJECT (object), 0);
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g_return_val_if_fail (unsupported == NULL, 0);
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return g_signal_connect_closure_by_id (object,
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g_signal_lookup (name, G_OBJECT_TYPE (object)), 0,
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(object_signal
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? g_cclosure_new_swap
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: g_cclosure_new) (func,
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data,
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(GClosureNotify) destroy_func),
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after);
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}
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void
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gtk_signal_compat_matched (GtkObject *object,
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GtkSignalFunc func,
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gpointer data,
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GSignalMatchType match,
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guint action)
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{
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guint n_handlers;
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g_return_if_fail (GTK_IS_OBJECT (object));
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switch (action)
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{
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case 0: n_handlers = g_signal_handlers_disconnect_matched (object, match, 0, 0, NULL, func, data); break;
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case 1: n_handlers = g_signal_handlers_block_matched (object, match, 0, 0, NULL, func, data); break;
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case 2: n_handlers = g_signal_handlers_unblock_matched (object, match, 0, 0, NULL, func, data); break;
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default: n_handlers = 0; break;
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}
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if (!n_handlers)
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g_warning ("unable to find signal handler for object(%s:%p) with func(%p) and data(%p)",
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G_OBJECT_TYPE_NAME (object), object, func, data);
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}
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static inline gboolean
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gtk_arg_to_value (GtkArg *arg,
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GValue *value)
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{
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switch (G_TYPE_FUNDAMENTAL (arg->type))
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{
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case G_TYPE_CHAR: g_value_set_char (value, GTK_VALUE_CHAR (*arg)); break;
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case G_TYPE_UCHAR: g_value_set_uchar (value, GTK_VALUE_UCHAR (*arg)); break;
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case G_TYPE_BOOLEAN: g_value_set_boolean (value, GTK_VALUE_BOOL (*arg)); break;
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case G_TYPE_INT: g_value_set_int (value, GTK_VALUE_INT (*arg)); break;
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case G_TYPE_UINT: g_value_set_uint (value, GTK_VALUE_UINT (*arg)); break;
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case G_TYPE_LONG: g_value_set_long (value, GTK_VALUE_LONG (*arg)); break;
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case G_TYPE_ULONG: g_value_set_ulong (value, GTK_VALUE_ULONG (*arg)); break;
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case G_TYPE_ENUM: g_value_set_enum (value, GTK_VALUE_ENUM (*arg)); break;
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case G_TYPE_FLAGS: g_value_set_flags (value, GTK_VALUE_FLAGS (*arg)); break;
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case G_TYPE_FLOAT: g_value_set_float (value, GTK_VALUE_FLOAT (*arg)); break;
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case G_TYPE_DOUBLE: g_value_set_double (value, GTK_VALUE_DOUBLE (*arg)); break;
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case G_TYPE_STRING: g_value_set_string (value, GTK_VALUE_STRING (*arg)); break;
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case G_TYPE_BOXED: g_value_set_boxed (value, GTK_VALUE_BOXED (*arg)); break;
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case G_TYPE_POINTER: g_value_set_pointer (value, GTK_VALUE_POINTER (*arg)); break;
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case G_TYPE_OBJECT: g_value_set_object (value, GTK_VALUE_POINTER (*arg)); break;
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default:
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return FALSE;
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}
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return TRUE;
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}
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static inline gboolean
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gtk_arg_static_to_value (GtkArg *arg,
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GValue *value)
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{
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switch (G_TYPE_FUNDAMENTAL (arg->type))
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{
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case G_TYPE_CHAR: g_value_set_char (value, GTK_VALUE_CHAR (*arg)); break;
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case G_TYPE_UCHAR: g_value_set_uchar (value, GTK_VALUE_UCHAR (*arg)); break;
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case G_TYPE_BOOLEAN: g_value_set_boolean (value, GTK_VALUE_BOOL (*arg)); break;
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case G_TYPE_INT: g_value_set_int (value, GTK_VALUE_INT (*arg)); break;
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case G_TYPE_UINT: g_value_set_uint (value, GTK_VALUE_UINT (*arg)); break;
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case G_TYPE_LONG: g_value_set_long (value, GTK_VALUE_LONG (*arg)); break;
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case G_TYPE_ULONG: g_value_set_ulong (value, GTK_VALUE_ULONG (*arg)); break;
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case G_TYPE_ENUM: g_value_set_enum (value, GTK_VALUE_ENUM (*arg)); break;
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case G_TYPE_FLAGS: g_value_set_flags (value, GTK_VALUE_FLAGS (*arg)); break;
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case G_TYPE_FLOAT: g_value_set_float (value, GTK_VALUE_FLOAT (*arg)); break;
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case G_TYPE_DOUBLE: g_value_set_double (value, GTK_VALUE_DOUBLE (*arg)); break;
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case G_TYPE_STRING: g_value_set_static_string (value, GTK_VALUE_STRING (*arg)); break;
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case G_TYPE_BOXED: g_value_set_static_boxed (value, GTK_VALUE_BOXED (*arg)); break;
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case G_TYPE_POINTER: g_value_set_pointer (value, GTK_VALUE_POINTER (*arg)); break;
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case G_TYPE_OBJECT: g_value_set_object (value, GTK_VALUE_POINTER (*arg)); break;
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default:
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return FALSE;
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}
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return TRUE;
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}
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static inline gboolean
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gtk_arg_set_from_value (GtkArg *arg,
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GValue *value,
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gboolean copy_string)
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{
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switch (G_TYPE_FUNDAMENTAL (arg->type))
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{
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case G_TYPE_CHAR: GTK_VALUE_CHAR (*arg) = g_value_get_char (value); break;
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case G_TYPE_UCHAR: GTK_VALUE_UCHAR (*arg) = g_value_get_uchar (value); break;
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case G_TYPE_BOOLEAN: GTK_VALUE_BOOL (*arg) = g_value_get_boolean (value); break;
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case G_TYPE_INT: GTK_VALUE_INT (*arg) = g_value_get_int (value); break;
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case G_TYPE_UINT: GTK_VALUE_UINT (*arg) = g_value_get_uint (value); break;
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case G_TYPE_LONG: GTK_VALUE_LONG (*arg) = g_value_get_long (value); break;
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case G_TYPE_ULONG: GTK_VALUE_ULONG (*arg) = g_value_get_ulong (value); break;
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case G_TYPE_ENUM: GTK_VALUE_ENUM (*arg) = g_value_get_enum (value); break;
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case G_TYPE_FLAGS: GTK_VALUE_FLAGS (*arg) = g_value_get_flags (value); break;
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case G_TYPE_FLOAT: GTK_VALUE_FLOAT (*arg) = g_value_get_float (value); break;
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case G_TYPE_DOUBLE: GTK_VALUE_DOUBLE (*arg) = g_value_get_double (value); break;
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case G_TYPE_BOXED: GTK_VALUE_BOXED (*arg) = g_value_get_boxed (value); break;
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case G_TYPE_POINTER: GTK_VALUE_POINTER (*arg) = g_value_get_pointer (value); break;
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case G_TYPE_OBJECT: GTK_VALUE_POINTER (*arg) = g_value_get_object (value); break;
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case G_TYPE_STRING: if (copy_string)
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GTK_VALUE_STRING (*arg) = g_value_dup_string (value);
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else
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GTK_VALUE_STRING (*arg) = g_value_get_string (value);
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break;
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default:
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return FALSE;
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}
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return TRUE;
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}
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static inline gboolean
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gtk_argloc_set_from_value (GtkArg *arg,
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GValue *value,
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gboolean copy_string)
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{
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switch (G_TYPE_FUNDAMENTAL (arg->type))
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{
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case G_TYPE_CHAR: *GTK_RETLOC_CHAR (*arg) = g_value_get_char (value); break;
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case G_TYPE_UCHAR: *GTK_RETLOC_UCHAR (*arg) = g_value_get_uchar (value); break;
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case G_TYPE_BOOLEAN: *GTK_RETLOC_BOOL (*arg) = g_value_get_boolean (value); break;
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case G_TYPE_INT: *GTK_RETLOC_INT (*arg) = g_value_get_int (value); break;
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case G_TYPE_UINT: *GTK_RETLOC_UINT (*arg) = g_value_get_uint (value); break;
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case G_TYPE_LONG: *GTK_RETLOC_LONG (*arg) = g_value_get_long (value); break;
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case G_TYPE_ULONG: *GTK_RETLOC_ULONG (*arg) = g_value_get_ulong (value); break;
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case G_TYPE_ENUM: *GTK_RETLOC_ENUM (*arg) = g_value_get_enum (value); break;
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case G_TYPE_FLAGS: *GTK_RETLOC_FLAGS (*arg) = g_value_get_flags (value); break;
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case G_TYPE_FLOAT: *GTK_RETLOC_FLOAT (*arg) = g_value_get_float (value); break;
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case G_TYPE_DOUBLE: *GTK_RETLOC_DOUBLE (*arg) = g_value_get_double (value); break;
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case G_TYPE_BOXED: *GTK_RETLOC_BOXED (*arg) = g_value_get_boxed (value); break;
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case G_TYPE_POINTER: *GTK_RETLOC_POINTER (*arg) = g_value_get_pointer (value); break;
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case G_TYPE_OBJECT: *GTK_RETLOC_POINTER (*arg) = g_value_get_object (value); break;
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case G_TYPE_STRING: if (copy_string)
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*GTK_RETLOC_STRING (*arg) = g_value_dup_string (value);
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else
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*GTK_RETLOC_STRING (*arg) = g_value_get_string (value);
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break;
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default:
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return FALSE;
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}
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return TRUE;
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}
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void
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gtk_signal_emitv (GtkObject *object,
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guint signal_id,
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GtkArg *args)
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{
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GSignalQuery query;
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GValue params[SIGNAL_MAX_PARAMS + 1] = { { 0, }, };
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GValue rvalue = { 0, };
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guint i;
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g_return_if_fail (GTK_IS_OBJECT (object));
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g_signal_query (signal_id, &query);
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g_return_if_fail (query.signal_id != 0);
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g_return_if_fail (g_type_is_a (GTK_OBJECT_TYPE (object), query.itype));
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g_return_if_fail (query.n_params < SIGNAL_MAX_PARAMS);
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if (query.n_params > 0)
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g_return_if_fail (args != NULL);
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g_value_init (params + 0, GTK_OBJECT_TYPE (object));
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g_value_set_object (params + 0, G_OBJECT (object));
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for (i = 0; i < query.n_params; i++)
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{
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GValue *value = params + 1 + i;
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GtkArg *arg = args + i;
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g_value_init (value, arg->type & ~G_SIGNAL_TYPE_STATIC_SCOPE);
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if (!gtk_arg_static_to_value (arg, value))
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{
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g_warning ("%s: failed to convert arg type `%s' to value type `%s'",
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G_STRLOC, g_type_name (arg->type & ~G_SIGNAL_TYPE_STATIC_SCOPE),
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g_type_name (G_VALUE_TYPE (value)));
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return;
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}
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}
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if (query.return_type != G_TYPE_NONE)
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g_value_init (&rvalue, query.return_type);
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g_signal_emitv (params, signal_id, 0, &rvalue);
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if (query.return_type != G_TYPE_NONE)
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{
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gtk_argloc_set_from_value (args + query.n_params, &rvalue, TRUE);
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g_value_unset (&rvalue);
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}
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for (i = 0; i < query.n_params; i++)
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g_value_unset (params + 1 + i);
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g_value_unset (params + 0);
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}
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static gboolean
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gtk_signal_collect_args (GtkArg *args,
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guint n_args,
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const GtkType *arg_types,
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GtkType return_type,
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va_list var_args)
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{
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register GtkArg *last_arg;
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register gboolean failed = FALSE;
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for (last_arg = args + n_args; args < last_arg; args++)
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{
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register gchar *error;
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args->name = NULL;
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args->type = *(arg_types++);
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GTK_ARG_COLLECT_VALUE (args,
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var_args,
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error);
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if (error)
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{
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failed = TRUE;
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g_warning ("gtk_signal_collect_args(): %s", error);
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g_free (error);
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}
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}
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args->type = return_type;
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args->name = NULL;
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return_type = GTK_FUNDAMENTAL_TYPE (return_type);
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if (return_type != G_TYPE_NONE)
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{
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if (return_type != 0) /* FIXME: check for IS_ARG */
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{
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GTK_VALUE_POINTER (*args) = va_arg (var_args, gpointer);
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if (GTK_VALUE_POINTER (*args) == NULL)
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{
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failed = TRUE;
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g_warning ("gtk_signal_collect_args(): invalid NULL pointer for return argument type `%s'",
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gtk_type_name (args->type));
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}
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}
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else
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{
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failed = TRUE;
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g_warning ("gtk_signal_collect_args(): unsupported return argument type `%s'",
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gtk_type_name (args->type));
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}
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}
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else
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GTK_VALUE_POINTER (*args) = NULL;
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return failed;
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}
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#if 0
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void
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gtk_signal_emit (GtkObject *object,
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guint signal_id,
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...)
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{
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GtkArg args[SIGNAL_MAX_PARAMS + 1];
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GSignalQuery query;
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gboolean abort;
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va_list var_args;
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g_return_if_fail (GTK_IS_OBJECT (object));
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g_signal_query (signal_id, &query);
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g_return_if_fail (query.signal_id != 0);
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g_return_if_fail (query.n_params < SIGNAL_MAX_PARAMS);
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va_start (var_args, signal_id);
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abort = gtk_signal_collect_args (args,
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query.n_params,
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query.param_types,
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query.return_type,
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var_args);
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va_end (var_args);
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if (!abort)
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gtk_signal_emitv (object, signal_id, args);
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}
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#endif
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void
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gtk_signal_emit (GtkObject *object,
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guint signal_id,
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...)
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{
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va_list var_args;
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g_return_if_fail (GTK_IS_OBJECT (object));
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va_start (var_args, signal_id);
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g_signal_emit_valist (G_OBJECT (object), signal_id, 0, var_args);
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|
va_end (var_args);
|
|
}
|
|
|
|
void
|
|
gtk_signal_emit_by_name (GtkObject *object,
|
|
const gchar *name,
|
|
...)
|
|
{
|
|
GtkArg args[SIGNAL_MAX_PARAMS + 1];
|
|
GSignalQuery query;
|
|
gboolean abort;
|
|
va_list var_args;
|
|
|
|
g_return_if_fail (GTK_IS_OBJECT (object));
|
|
g_return_if_fail (name != NULL);
|
|
|
|
g_signal_query (g_signal_lookup (name, GTK_OBJECT_TYPE (object)), &query);
|
|
g_return_if_fail (query.signal_id != 0);
|
|
g_return_if_fail (query.n_params < SIGNAL_MAX_PARAMS);
|
|
|
|
va_start (var_args, name);
|
|
abort = gtk_signal_collect_args (args,
|
|
query.n_params,
|
|
query.param_types,
|
|
query.return_type,
|
|
var_args);
|
|
va_end (var_args);
|
|
|
|
if (!abort)
|
|
gtk_signal_emitv (object, query.signal_id, args);
|
|
}
|
|
|
|
void
|
|
gtk_signal_emitv_by_name (GtkObject *object,
|
|
const gchar *name,
|
|
GtkArg *args)
|
|
{
|
|
g_return_if_fail (GTK_IS_OBJECT (object));
|
|
|
|
gtk_signal_emitv (object, g_signal_lookup (name, GTK_OBJECT_TYPE (object)), args);
|
|
}
|