gstreamer/editor/gsteditorproject.c

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/* Gnome-Streamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <gnome.h>
#include <gst/gst.h>
#include <glade/glade.h>
#include "gsteditorproject.h"
#include "gsteditorpalette.h"
#include "gsteditorproperty.h"
#include "gsteditorimage.h"
/* class functions */
static void gst_editor_project_class_init (GstEditorProjectClass *klass);
static void gst_editor_project_init (GstEditorProject *project);
static void gst_editor_project_set_arg (GtkObject *object,GtkArg *arg,guint id);
static void gst_editor_project_get_arg (GtkObject *object,GtkArg *arg,guint id);
enum {
ARG_0,
};
enum {
ELEMENT_ADDED,
ELEMENT_REMOVED,
ELEMENT_CHANGED,
LAST_SIGNAL
};
static GtkObjectClass *parent_class;
static guint gst_editor_project_signals[LAST_SIGNAL] = { 0 };
GtkType gst_editor_project_get_type (void)
{
static GtkType project_type = 0;
if (!project_type) {
static const GtkTypeInfo project_info = {
"GstEditorProject",
sizeof(GstEditorProject),
sizeof(GstEditorProjectClass),
(GtkClassInitFunc)gst_editor_project_class_init,
(GtkObjectInitFunc)gst_editor_project_init,
NULL,
NULL,
(GtkClassInitFunc)NULL,
};
project_type = gtk_type_unique(gtk_object_get_type(),&project_info);
}
return project_type;
}
static void
gst_editor_project_class_init (GstEditorProjectClass *klass)
{
GtkObjectClass *object_class;
object_class = (GtkObjectClass*)klass;
parent_class = gtk_type_class(gtk_object_get_type());
gst_editor_project_signals[ELEMENT_ADDED] =
gtk_signal_new("element_added",GTK_RUN_FIRST,object_class->type,
GTK_SIGNAL_OFFSET(GstEditorProjectClass,element_added),
gtk_marshal_NONE__POINTER,GTK_TYPE_NONE,1,
GST_TYPE_ELEMENT);
gst_editor_project_signals[ELEMENT_REMOVED] =
gtk_signal_new("element_removed",GTK_RUN_FIRST,object_class->type,
GTK_SIGNAL_OFFSET(GstEditorProjectClass,element_removed),
gtk_marshal_NONE__POINTER,GTK_TYPE_NONE,1,
GST_TYPE_ELEMENT);
gst_editor_project_signals[ELEMENT_CHANGED] =
gtk_signal_new("element_changed",GTK_RUN_FIRST,object_class->type,
GTK_SIGNAL_OFFSET(GstEditorProjectClass,element_changed),
gtk_marshal_NONE__POINTER,GTK_TYPE_NONE,1,
GST_TYPE_ELEMENT);
gtk_object_class_add_signals(object_class,gst_editor_project_signals,LAST_SIGNAL);
object_class->set_arg = gst_editor_project_set_arg;
object_class->get_arg = gst_editor_project_get_arg;
}
static void
gst_editor_project_init (GstEditorProject *project)
{
project->toplevelelements = NULL;
}
GstEditorProject*
gst_editor_project_new (void)
{
GstEditorProject *editorproject;
editorproject = GST_EDITOR_PROJECT(gtk_type_new(GST_TYPE_EDITOR_PROJECT));
return editorproject;
}
GstEditorProject *
gst_editor_project_new_from_file (const guchar *fname)
{
#ifndef GST_DISABLE_LOADSAVE
GstEditorProject *editorproject;
GstXML *xml;
GList *elements;
g_return_val_if_fail (fname != NULL, NULL);
editorproject = gst_editor_project_new();
xml = gst_xml_new ();
gst_xml_parse_file (xml, fname, NULL);
elements = gst_xml_get_topelements(xml);
while (elements) {
GstElement *element = (GstElement *) elements->data;
gst_editor_project_add_toplevel_element (editorproject, element);
elements = g_list_next (elements);
}
return editorproject;
#else
return NULL;
#endif
}
void
gst_editor_project_load (GstEditorProject *project, const guchar *fname)
{
}
void
gst_editor_project_save_as (GstEditorProject *project, const guchar *fname)
{
GList *elements;
g_return_if_fail (fname != NULL);
g_return_if_fail (project != NULL);
elements = project->toplevelelements;
while (elements) {
GstElement *element = (GstElement *) elements->data;
#ifndef GST_DISABLE_LOADSAVE
xmlSaveFile (fname, gst_xml_write (element));
#endif
elements = g_list_next (elements);
}
}
void
gst_editor_project_add_toplevel_element (GstEditorProject *project,
GstElement *element)
{
g_return_if_fail(project != NULL);
g_return_if_fail(GST_IS_EDITOR_PROJECT(project));
g_return_if_fail(element != NULL);
g_return_if_fail(GST_IS_ELEMENT(element));
project->toplevelelements = g_list_append(project->toplevelelements, element);
gst_element_set_name(element, "new_element");
gtk_signal_emit(GTK_OBJECT(project),gst_editor_project_signals[ELEMENT_ADDED], element);
}
static void
gst_editor_project_set_arg (GtkObject *object, GtkArg *arg, guint id)
{
GstEditorProject *project;
/* get the major types of this object */
project = GST_EDITOR_PROJECT(object);
switch (id) {
default:
g_warning("gsteditorproject: unknown arg!");
break;
}
}
static void
gst_editor_project_get_arg (GtkObject *object, GtkArg *arg, guint id)
{
GstEditorProject *project;
/* get the major types of this object */
project = GST_EDITOR_PROJECT(object);
switch (id) {
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}