gstreamer/editor/gsteditor.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 <gtk/gtk.h>
#include <gnome.h>
#include <gst/gst.h>
#include "gsteditor.h"
/* signals and args */
enum {
NAME_CHANGED,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_NAME,
};
static void gst_editor_class_init (GstEditorClass *klass);
static void gst_editor_init (GstEditor *editor);
static void gst_editor_set_arg (GtkObject *object, GtkArg *arg, guint id);
static void gst_editor_get_arg (GtkObject *object, GtkArg *arg, guint id);
static GtkFrame *parent_class = NULL;
static guint gst_editor_signals[LAST_SIGNAL] = { 0 };
GtkType
gst_editor_get_type (void)
{
static GtkType editor_type = 0;
if (!editor_type) {
static const GtkTypeInfo editor_info = {
"GstEditor",
sizeof(GstEditor),
sizeof(GstEditorClass),
(GtkClassInitFunc)gst_editor_class_init,
(GtkObjectInitFunc)gst_editor_init,
NULL,
NULL,
(GtkClassInitFunc)NULL,
};
editor_type = gtk_type_unique (gtk_window_get_type (), &editor_info);
}
return editor_type;
}
static void
gst_editor_class_init (GstEditorClass *klass)
{
GtkObjectClass *object_class;
object_class = (GtkObjectClass*)klass;
parent_class = gtk_type_class(gtk_window_get_type());
gtk_object_add_arg_type("GstEditor::name",GTK_TYPE_STRING,
GTK_ARG_READWRITE,ARG_NAME);
gst_editor_signals[NAME_CHANGED] =
gtk_signal_new("name_changed",GTK_RUN_FIRST,object_class->type,
GTK_SIGNAL_OFFSET(GstEditorClass,name_changed),
gtk_marshal_NONE__POINTER,GTK_TYPE_NONE,1,
GST_TYPE_EDITOR);
gtk_object_class_add_signals(object_class,gst_editor_signals,LAST_SIGNAL);
object_class->set_arg = gst_editor_set_arg;
object_class->get_arg = gst_editor_get_arg;
}
static void
gst_editor_init(GstEditor *editor)
{
}
static void
on_name_changed (GstEditorElement *element, gpointer data)
{
gtk_signal_emit(GTK_OBJECT(element),gst_editor_signals[NAME_CHANGED], NULL);
}
/**
* gst_editor_new:
* name: name of editor frame
*
* Creates a new GstEditor composite widget with the given name.
*
* Returns: Freshly created GstEditor widget.
*/
GstEditor*
gst_editor_new (GstElement *element)
{
GstEditor *editor;
g_return_val_if_fail(element != NULL, NULL);
editor = gtk_type_new(gst_editor_get_type());
editor->element = element;
/* create the editor canvas */
if (element) {
editor->canvas = gst_editor_canvas_new_with_bin (gst_editor_bin_new (GST_BIN (element), NULL));
}
else {
editor->canvas = gst_editor_canvas_new ();
}
/* create the scrolled window */
editor->scrollwindow = gtk_scrolled_window_new(NULL,NULL);
/* get the canvas widget */
editor->canvaswidget = GTK_WIDGET (editor->canvas);
gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(editor->scrollwindow),
editor->canvaswidget);
/* add the scrolled window to the canvas */
gtk_container_add(GTK_CONTAINER(editor),editor->scrollwindow);
gtk_widget_set_usize(GTK_WIDGET(editor),400,400);
gtk_widget_show_all(GTK_WIDGET(editor));
return editor;
}
const gchar*
gst_editor_get_name (GstEditor *editor)
{
return gst_element_get_name (GST_ELEMENT (editor->element));
}
static void
gst_editor_set_arg(GtkObject *object, GtkArg *arg, guint id)
{
GstEditor *editor = GST_EDITOR(object);
switch (id) {
case ARG_NAME:
gtk_object_set(GTK_OBJECT(editor),"label",GTK_VALUE_STRING(*arg),NULL);
gst_element_set_name(GST_ELEMENT(editor->element),
GTK_VALUE_STRING(*arg));
break;
default:
g_warning("gsteditor: unknown arg!\n");
break;
}
}
static void
gst_editor_get_arg (GtkObject *object, GtkArg *arg, guint id)
{
GstEditor *editor = GST_EDITOR(object);
switch (id) {
case ARG_NAME:
GTK_VALUE_STRING(*arg) =
(gchar *)gst_element_get_name(GST_ELEMENT(editor->element));
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}