gstreamer/editor/gsteditorcanvas.c
Wim Taymans 695f761c2b Fixed a bug in the typeloading.
Original commit message from CVS:
Fixed a bug in the typeloading.
Fixes to various elements so that correct types are returned.
Fixed flag collision with GtkObject.
Elements can now suggest a thread. not sure if this is the right way to
handle automatic thread creation.
Autoplugging now works with multiple sinks and thread setup. No threads
are created for intermediate elements yet, so MPEG may still be choppy.
2000-10-08 22:17:11 +00:00

261 lines
8.2 KiB
C

/* 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 "gsteditor.h"
#include "gsteditorcreate.h"
/* signals and args */
enum {
LAST_SIGNAL
};
enum {
ARG_0,
ARG_CANVAS,
};
static void gst_editor_canvas_class_init(GstEditorCanvasClass *klass);
static void gst_editor_canvas_init(GstEditorCanvas *editorcanvas);
static void gst_editor_canvas_set_arg(GtkObject *object,GtkArg *arg,guint id);
static void gst_editor_canvas_get_arg(GtkObject *object,GtkArg *arg,guint id);
static void gst_editor_canvas_realize(GstEditorElement *element);
static gint gst_editor_canvas_button_release(GtkWidget *widget,
GdkEvent *event,
GstEditorCanvas *canvas);
static gint gst_editor_canvas_event(GnomeCanvasItem *item,
GdkEvent *event,
GstEditorElement *element);
static void gst_editor_canvas_set_arg(GtkObject *object,GtkArg *arg,guint id);
static void gst_editor_canvas_get_arg(GtkObject *object,GtkArg *arg,guint id);
//gint gst_editor_canvas_verbose_event(GtkWidget *widget,GdkEvent *event);
static GstEditorBinClass *parent_class = NULL;
GtkType gst_editor_canvas_get_type(void) {
static GtkType editor_canvas_type = 0;
if (!editor_canvas_type) {
static const GtkTypeInfo editor_canvas_info = {
"GstEditorCanvas",
sizeof(GstEditorCanvas),
sizeof(GstEditorCanvasClass),
(GtkClassInitFunc)gst_editor_canvas_class_init,
(GtkObjectInitFunc)gst_editor_canvas_init,
NULL,
NULL,
(GtkClassInitFunc)NULL,
};
editor_canvas_type = gtk_type_unique(gst_editor_bin_get_type(),&editor_canvas_info);
}
return editor_canvas_type;
}
static void gst_editor_canvas_class_init(GstEditorCanvasClass *klass) {
GtkObjectClass *object_class;
GstEditorElementClass *element_class;
object_class = (GtkObjectClass*)klass;
element_class = (GstEditorElementClass*)klass;
parent_class = gtk_type_class(gst_editor_bin_get_type());
gtk_object_add_arg_type("GstEditorCanvas::canvas",GTK_TYPE_POINTER,
GTK_ARG_READABLE,ARG_CANVAS);
object_class->set_arg = gst_editor_canvas_set_arg;
object_class->get_arg = gst_editor_canvas_get_arg;
element_class->realize = gst_editor_canvas_realize;
}
static void gst_editor_canvas_init(GstEditorCanvas *editorcanvas) {
}
GstEditorCanvas *gst_editor_canvas_new(GstBin *bin,
const gchar *first_arg_name,...) {
GstEditorCanvas *editorcanvas;
va_list args;
g_return_val_if_fail(bin != NULL, NULL);
g_return_val_if_fail(GST_IS_BIN(bin), NULL);
editorcanvas = GST_EDITOR_CANVAS(gtk_type_new(GST_TYPE_EDITOR_CANVAS));
GST_EDITOR_ELEMENT(editorcanvas)->element = GST_ELEMENT(bin);
GST_EDITOR_ELEMENT(editorcanvas)->parent = GST_EDITOR_BIN(editorcanvas);
va_start(args,first_arg_name);
gst_editor_element_construct(GST_EDITOR_ELEMENT(editorcanvas),NULL,
first_arg_name,args);
va_end(args);
return editorcanvas;
}
static void gst_editor_canvas_realize(GstEditorElement *element) {
GstEditorCanvas *canvas = GST_EDITOR_CANVAS(element);
canvas->canvas = GNOME_CANVAS(gnome_canvas_new());
element->canvas = canvas;
gtk_signal_connect(GTK_OBJECT(canvas->canvas),
"event",
GTK_SIGNAL_FUNC(gst_editor_canvas_event),
canvas);
gtk_signal_connect_after(GTK_OBJECT(canvas->canvas),
"button_release_event",
GTK_SIGNAL_FUNC(gst_editor_canvas_button_release),
canvas);
GST_EDITOR_SET_OBJECT(canvas->canvas,canvas);
element->group = gnome_canvas_root(canvas->canvas);
if (GST_EDITOR_ELEMENT_CLASS(parent_class)->realize) {
GST_EDITOR_ELEMENT_CLASS(parent_class)->realize(element);
}
}
static void gst_editor_canvas_set_arg(GtkObject *object,GtkArg *arg,guint id) {
GstEditorCanvas *canvas;
canvas = GST_EDITOR_CANVAS(object);
switch (id) {
default:
g_warning("gsteditorcanvas: unknown arg!");
break;
}
}
static void gst_editor_canvas_get_arg(GtkObject *object,GtkArg *arg,guint id) {
GstEditorCanvas *canvas;
canvas = GST_EDITOR_CANVAS(object);
switch (id) {
case ARG_CANVAS:
GTK_VALUE_POINTER(*arg) = canvas->canvas;
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
GtkWidget *gst_editor_canvas_get_canvas(GstEditorCanvas *canvas) {
return GTK_WIDGET(canvas->canvas);
}
static gint gst_editor_canvas_button_release(GtkWidget *widget,
GdkEvent *event,
GstEditorCanvas *canvas) {
//GstEditorBin *bin = GST_EDITOR_BIN(canvas);
gdouble x,y;
GstEditorElement *element;
// g_print("canvas got button press at %.2fx%.2f\n",
// event->button.x,event->button.y);
if (event->type != GDK_BUTTON_RELEASE) return FALSE;
// if we're connecting a pair of objects in the canvas, fall through
// if (bin->connection) {
// g_print("we're in a connection, not handling\n");
// return FALSE;
// }
if (canvas->inchild) {
// g_print("inchild, not responding to button_release\n");
canvas->inchild = FALSE;
return FALSE;
}
gnome_canvas_window_to_world(GNOME_CANVAS(widget),
event->button.x,event->button.y,&x,&y);
// g_print("calling gst_editor_create_item()\n");
if ((element = gst_editor_create_item(GST_EDITOR_BIN(canvas),x,y)) != NULL)
return TRUE;
return FALSE;
}
/* FIXME: guerilla prototype... */
void gst_editor_bin_connection_drag(GstEditorBin *bin,
gdouble wx,gdouble wy);
static gint gst_editor_canvas_event(GnomeCanvasItem *item,
GdkEvent *event,
GstEditorElement *element) {
// if (GST_EDITOR_ELEMENT_CLASS(parent_class)->event)
// return (*GST_EDITOR_ELEMENT_CLASS(parent_class)->event)(
// element->group,event,element);
GstEditorBin *bin = GST_EDITOR_BIN(element);
GstEditorCanvas *canvas = GST_EDITOR_CANVAS(element);
//g_print("canvas got event %d at %.2fx%.2f\n",event->type,
// event->button.x,event->button.y);
switch (event->type) {
case GDK_BUTTON_RELEASE:
if (bin->connecting) {
// g_print("canvas got button release during drag\n");
gnome_canvas_item_ungrab(
GNOME_CANVAS_ITEM(element->group),
event->button.time);
if (bin->connection->topad)
gst_editor_connection_connect(bin->connection);
else
gtk_object_destroy(GTK_OBJECT(bin->connection));
bin->connecting = FALSE;
//g_print("finished dragging connection on canvas, setting inchild\n");
element->canvas->inchild = TRUE;
return TRUE;
} else {
// g_print("got release, calling button_release()\n");
// gst_editor_canvas_button_release(canvas->canvas,event,canvas);
return FALSE;
}
break;
case GDK_MOTION_NOTIFY:
if (bin->connecting) {
gdouble x,y;
x = event->button.x;y = event->button.y;
gnome_canvas_window_to_world(canvas->canvas,
event->button.x,event->button.y,&x,&y);
// g_print("canvas has motion during connection draw at
//%.2fx%.2f\n",
// x,y);
gst_editor_bin_connection_drag(bin,x,y);
return TRUE;
}
break;
default:
break;
}
return FALSE;
}