gstreamer/gst/gobject2gtk.c
Steve Baker 4837519148 return NULL from g2g_object_class_find_property if gtk_object_arg_get_info returns an error
Original commit message from CVS:
return NULL from g2g_object_class_find_property if gtk_object_arg_get_info returns an error
2001-07-01 16:01:24 +00:00

300 lines
6.8 KiB
C

#include <stdio.h>
#include "gobject2gtk.h"
// GObject dummy implementation
static void
g_object_set_arg(GtkObject *object, GtkArg *arg, guint id)
{
((GObjectClass *)object->klass)->set_property((GObject *)object,id,arg,NULL);
}
static void
g_object_get_arg(GtkObject *object, GtkArg *arg, guint id)
{
((GObjectClass *)object->klass)->get_property((GObject *)object,id,arg,NULL);
}
static void
g_object_base_class_init (GObjectClass *klass)
{
GtkObjectClass *gtkobject_class;
gtkobject_class = (GtkObjectClass*) klass;
gtkobject_class->set_arg = g_object_set_arg;
gtkobject_class->get_arg = g_object_get_arg;
}
GType
g2g_object_get_type (void)
{
static GType object_type = 0;
if (!object_type) {
static const GtkTypeInfo object_info = {
"GObject",
sizeof(GObject),
sizeof(GObjectClass),
(GtkClassInitFunc)NULL,
(GtkObjectInitFunc)NULL,
(GtkArgSetFunc)NULL,
(GtkArgGetFunc)NULL,
(GtkClassInitFunc)g_object_base_class_init,
};
object_type = gtk_type_unique(gtk_object_get_type(),&object_info);
}
return object_type;
}
guint
g2g_type_register_static (GtkType parent_type, gchar *type_name,
const GTypeInfo *info, guint flags)
{
GtkTypeInfo gtkinfo = {
type_name,
info->instance_size,
info->class_size,
info->class_init,
info->instance_init,
NULL,
NULL,
info->base_init,
};
return gtk_type_unique(parent_type,&gtkinfo);
}
gpointer
g2g_object_new(GtkType type,gpointer blah_varargs_stuff) {
return gtk_type_new(type);
}
void
g2g_object_class_install_property(GtkObjectClass *oclass,guint property_id,GParamSpec *pspec)
{
gchar *arg_fullname;
arg_fullname = g_strdup_printf("%s::%s",gtk_type_name(oclass->type),pspec->name);
//fprintf(stderr,"installing arg \"%s\" into class \"%s\"\n",arg_fullname,"");
gtk_object_add_arg_type(arg_fullname,pspec->value_type,pspec->flags,property_id);
g_free(pspec);
}
GParamSpec *
g2g_object_class_find_property(GtkObjectClass *class,gchar *name)
{
GtkArgInfo *info;
GParamSpec *spec;
//fprintf(stderr,"class name is %s\n",gtk_type_name(class->type));
// return NULL if no info found
if (gtk_object_arg_get_info(class->type,name,&info)){
return NULL;
}
spec = g_new0(GParamSpec,1);
if (info) {
spec->name = name;
spec->value_type = info->type;
spec->flags = info->arg_flags;
} else {
spec->value_type = GTK_TYPE_NONE;
}
return spec;
}
GParamSpec **
g2g_object_class_list_properties(GtkObjectClass *oclass,guint *n_properties) {
GType type = G_OBJECT_CLASS_TYPE (oclass);
guint32 *flags;
GtkArg *args;
gint num_args;
GParamSpec **params;
int i;
args = gtk_object_query_args (type, &flags, &num_args);
// FIXME: args and flags need to be freed.
params = g_new0(GParamSpec *,num_args);
for (i=0;i<num_args;i++) {
params[i] = g_new0(GParamSpec,1);
params[i]->name = args[i].name;
params[i]->value_type = args[i].type;
params[i]->flags = flags[i];
}
*n_properties = num_args;
return params;
}
GParamSpec *
g2g_param_spec_boolean(gchar *name,gchar *nick,gchar *blurb,gboolean def,gint flags) {
GParamSpec *spec = g_new(GParamSpec,1);
spec->name = name;
spec->value_type = GTK_TYPE_BOOL;
spec->flags = flags;
return spec;
}
GParamSpec *
g2g_param_spec_enum(gchar *name,gchar *nick,gchar *blurb,GtkType e,guint def,gint flags) {
GParamSpec *spec = g_new(GParamSpec,1);
spec->name = name;
spec->value_type = e;
spec->flags = flags;
return spec;
}
GParamSpec *
g2g_param_spec_int(gchar *name,gchar *nick,gchar *blurb,gint min,gint max,gint def,gint flags) {
GParamSpec *spec = g_new(GParamSpec,1);
spec->name = name;
spec->value_type = GTK_TYPE_INT;
spec->flags = flags;
return spec;
}
GParamSpec *
g2g_param_spec_uint(gchar *name,gchar *nick,gchar *blurb,guint min,guint max,guint def,gint flags) {
GParamSpec *spec = g_new(GParamSpec,1);
spec->name = name;
spec->value_type = GTK_TYPE_UINT;
spec->flags = flags;
return spec;
}
GParamSpec *
g2g_param_spec_long(gchar *name,gchar *nick,gchar *blurb,glong min,glong max,glong def,gint flags) {
GParamSpec *spec = g_new(GParamSpec,1);
spec->name = name;
spec->value_type = GTK_TYPE_LONG;
spec->flags = flags;
return spec;
}
GParamSpec *
g2g_param_spec_ulong(gchar *name,gchar *nick,gchar *blurb,gulong min,gulong max,gulong def,gint flags) {
GParamSpec *spec = g_new(GParamSpec,1);
spec->name = name;
spec->value_type = GTK_TYPE_ULONG;
spec->flags = flags;
return spec;
}
GParamSpec *
g2g_param_spec_float(gchar *name,gchar *nick,gchar *blurb,float min,float max,float def,gint flags) {
GParamSpec *spec = g_new(GParamSpec,1);
spec->name = name;
spec->value_type = GTK_TYPE_FLOAT;
spec->flags = flags;
return spec;
}
GParamSpec *
g2g_param_spec_double(gchar *name,gchar *nick,gchar *blurb,double min,double max,double def,gint flags) {
GParamSpec *spec = g_new(GParamSpec,1);
spec->name = name;
spec->value_type = GTK_TYPE_DOUBLE;
spec->flags = flags;
return spec;
}
GParamSpec *
g2g_param_spec_pointer(gchar *name,gchar *nick,gchar *blurb,gint flags) {
GParamSpec *spec = g_new(GParamSpec,1);
spec->name = name;
spec->value_type = GTK_TYPE_POINTER;
spec->flags = flags;
return spec;
}
GParamSpec *
g2g_param_spec_string(gchar *name,gchar *nick,gchar *blurb,gchar *def,gint flags) {
GParamSpec *spec = g_new(GParamSpec,1);
spec->name = name;
spec->value_type = GTK_TYPE_STRING;
spec->flags = flags;
return spec;
}
guint
g2g_signal_newc (const gchar *name,
GtkType object_type,
GtkSignalRunType signal_flags,
guint function_offset,
gpointer accumulator, // GSignalAccumulator
gpointer accu_data,
GtkSignalMarshaller marshaller,
GType return_val,
guint nparams,
...)
{
GtkType *params;
guint i;
va_list args;
guint signal_id;
#define MAX_SIGNAL_PARAMS (31) // from gtksignal.c
g_return_val_if_fail (nparams < MAX_SIGNAL_PARAMS, 0);
if (nparams > 0)
{
params = g_new (GtkType, nparams);
va_start (args, nparams);
for (i = 0; i < nparams; i++)
params[i] = va_arg (args, GtkType);
va_end (args);
}
else
params = NULL;
signal_id = gtk_signal_newv (name,
signal_flags,
object_type,
function_offset,
marshaller,
return_val,
nparams,
params);
g_free (params);
// now register it.
gtk_object_class_add_signals(gtk_type_class(object_type), &signal_id, 1);
return signal_id;
}