mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-22 09:41:07 +00:00
289 lines
9.1 KiB
C
289 lines
9.1 KiB
C
#include <gnome.h>
|
|
|
|
#include <gst/gst.h>
|
|
#include <gst/gstutils.h>
|
|
|
|
#include "gsteditor.h"
|
|
|
|
/* class functions */
|
|
static void gst_editor_connection_class_init(GstEditorConnectionClass *klass);
|
|
static void gst_editor_connection_init(GstEditorConnection *connection);
|
|
static void gst_editor_connection_set_arg(GtkObject *object,GtkArg *arg,guint id);
|
|
static void gst_editor_connection_get_arg(GtkObject *object,GtkArg *arg,guint id);
|
|
static void gst_editor_connection_destroy(GtkObject *object);
|
|
static void gst_editor_connection_realize(GstEditorConnection *connection);
|
|
|
|
/* events fired by items within self */
|
|
static gint gst_editor_connection_line_event(GnomeCanvasItem *item,
|
|
GdkEvent *event,
|
|
GstEditorConnection *connection);
|
|
|
|
/* utility functions */
|
|
|
|
|
|
enum {
|
|
ARG_0,
|
|
ARG_X,
|
|
ARG_Y,
|
|
ARG_FROMPAD,
|
|
ARG_TOPAD,
|
|
ARG_GHOST,
|
|
};
|
|
|
|
enum {
|
|
LAST_SIGNAL
|
|
};
|
|
|
|
static GtkObjectClass *parent_class;
|
|
static guint gst_editor_connection_signals[LAST_SIGNAL] = { 0 };
|
|
|
|
GtkType gst_editor_connection_get_type() {
|
|
static GtkType connection_type = 0;
|
|
|
|
if (!connection_type) {
|
|
static const GtkTypeInfo connection_info = {
|
|
"GstEditorConnection",
|
|
sizeof(GstEditorConnection),
|
|
sizeof(GstEditorConnectionClass),
|
|
(GtkClassInitFunc)gst_editor_connection_class_init,
|
|
(GtkObjectInitFunc)gst_editor_connection_init,
|
|
NULL,
|
|
NULL,
|
|
(GtkClassInitFunc)NULL,
|
|
};
|
|
connection_type = gtk_type_unique(gtk_object_get_type(),&connection_info);
|
|
}
|
|
return connection_type;
|
|
}
|
|
|
|
static void gst_editor_connection_class_init(GstEditorConnectionClass *klass) {
|
|
GtkObjectClass *object_class;
|
|
|
|
object_class = (GtkObjectClass*)klass;
|
|
|
|
parent_class = gtk_type_class(gnome_canvas_line_get_type());
|
|
|
|
gtk_object_add_arg_type("GstEditorConnection::x",GTK_TYPE_DOUBLE,
|
|
GTK_ARG_READWRITE,ARG_X);
|
|
gtk_object_add_arg_type("GstEditorConnection::y",GTK_TYPE_DOUBLE,
|
|
GTK_ARG_READWRITE,ARG_Y);
|
|
gtk_object_add_arg_type("GstEditorConnection::frompad",GTK_TYPE_POINTER,
|
|
GTK_ARG_READWRITE,ARG_FROMPAD);
|
|
gtk_object_add_arg_type("GstEditorConnection::topad",GTK_TYPE_POINTER,
|
|
GTK_ARG_READWRITE,ARG_TOPAD);
|
|
gtk_object_add_arg_type("GstEditorConnection::ghost",GTK_TYPE_BOOL,
|
|
GTK_ARG_READWRITE,ARG_GHOST);
|
|
|
|
klass->realize = gst_editor_connection_realize;
|
|
|
|
object_class->set_arg = gst_editor_connection_set_arg;
|
|
object_class->get_arg = gst_editor_connection_get_arg;
|
|
object_class->destroy = gst_editor_connection_destroy;
|
|
}
|
|
|
|
static void gst_editor_connection_init(GstEditorConnection *connection) {
|
|
connection->points = gnome_canvas_points_new(2);
|
|
}
|
|
|
|
GstEditorConnection *gst_editor_connection_new(GstEditorBin *parent,
|
|
GstEditorPad *frompad) {
|
|
GstEditorConnection *connection;
|
|
|
|
g_return_if_fail(parent != NULL);
|
|
g_return_if_fail(GST_IS_EDITOR_BIN(parent));
|
|
g_return_if_fail(frompad != NULL);
|
|
g_return_if_fail(GST_IS_EDITOR_PAD(frompad));
|
|
|
|
connection = GST_EDITOR_CONNECTION(gtk_type_new(GST_TYPE_EDITOR_CONNECTION));
|
|
connection->frompad = frompad;
|
|
connection->frompad->connection = connection;
|
|
connection->fromsrc = connection->frompad->issrc;
|
|
connection->parent = parent;
|
|
|
|
gst_editor_connection_realize(connection);
|
|
|
|
return connection;
|
|
}
|
|
|
|
|
|
static void gst_editor_connection_set_arg(GtkObject *object,GtkArg *arg,guint id) {
|
|
GstEditorConnection *connection;
|
|
|
|
/* get the major types of this object */
|
|
connection = GST_EDITOR_CONNECTION(object);
|
|
|
|
switch (id) {
|
|
case ARG_X:
|
|
connection->x = GTK_VALUE_DOUBLE(*arg);
|
|
connection->resize = TRUE;
|
|
break;
|
|
case ARG_Y:
|
|
connection->y = GTK_VALUE_DOUBLE(*arg);
|
|
connection->resize = TRUE;
|
|
break;
|
|
case ARG_TOPAD:
|
|
if (connection->topad) {
|
|
if (connection->ghost)
|
|
connection->topad->ghostconnection = NULL;
|
|
else
|
|
connection->topad->connection = NULL;
|
|
}
|
|
connection->topad = GTK_VALUE_POINTER(*arg);
|
|
/* if this is the same type, refuse */
|
|
if (connection->topad &&
|
|
(connection->frompad->issrc == connection->topad->issrc))
|
|
connection->topad = NULL;
|
|
if (connection->topad) {
|
|
if (connection->ghost)
|
|
connection->topad->ghostconnection = connection;
|
|
else
|
|
connection->topad->connection = connection;
|
|
}
|
|
connection->resize = TRUE;
|
|
break;
|
|
case ARG_GHOST:
|
|
connection->ghost = GTK_VALUE_BOOL(*arg);
|
|
break;
|
|
default:
|
|
g_warning("gsteditorconnection: unknown arg!");
|
|
break;
|
|
}
|
|
gst_editor_connection_resize(connection);
|
|
}
|
|
|
|
static void gst_editor_connection_get_arg(GtkObject *object,GtkArg *arg,guint id) {
|
|
GstEditorConnection *connection;
|
|
|
|
/* get the major types of this object */
|
|
connection = GST_EDITOR_CONNECTION(object);
|
|
|
|
switch (id) {
|
|
case ARG_X:
|
|
GTK_VALUE_INT(*arg) = connection->x;
|
|
break;
|
|
case ARG_Y:
|
|
GTK_VALUE_INT(*arg) = connection->y;
|
|
break;
|
|
default:
|
|
arg->type = GTK_TYPE_INVALID;
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static void gst_editor_connection_realize(GstEditorConnection *connection) {
|
|
connection->points->coords[0] = 0.0;
|
|
connection->points->coords[1] = 0.0;
|
|
connection->points->coords[2] = 0.0;
|
|
connection->points->coords[3] = 0.0;
|
|
connection->line = gnome_canvas_item_new(
|
|
GST_EDITOR_ELEMENT(connection->parent)->group,
|
|
gnome_canvas_line_get_type(),
|
|
"points",connection->points,NULL);
|
|
}
|
|
|
|
static void gst_editor_connection_destroy(GtkObject *object) {
|
|
GstEditorConnection *connection = GST_EDITOR_CONNECTION(object);
|
|
|
|
gtk_object_destroy(GTK_OBJECT(connection->line));
|
|
}
|
|
|
|
void gst_editor_connection_resize(GstEditorConnection *connection) {
|
|
gdouble x1,y1,x2,y2;
|
|
|
|
if (connection->resize != TRUE) return;
|
|
connection->resize = FALSE;
|
|
|
|
// g_print("resizing connection, frompad is %p, topad is %p\n",
|
|
// connection->frompad,connection->topad);
|
|
|
|
/* calculate the new endpoints */
|
|
if (connection->topad == NULL) {
|
|
/* our base point is the source pad */
|
|
if (connection->fromsrc)
|
|
x1 = connection->frompad->x + connection->frompad->width;
|
|
else
|
|
x1 = connection->frompad->x;
|
|
y1 = connection->frompad->y + (connection->frompad->height / 2);
|
|
x2 = connection->x;
|
|
y2 = connection->y;
|
|
/* NOTE: coords are in the following state:
|
|
x1,y1: item coords relative to the element's group
|
|
x2,y2: item coords relative to the bin's group
|
|
This means translating the x1,y1 coords into world, then into bin.
|
|
*/
|
|
gnome_canvas_item_i2w(connection->frompad->parent->group,&x1,&y1);
|
|
gnome_canvas_item_w2i(GST_EDITOR_ELEMENT_GROUP(connection->parent),
|
|
&x1,&y1);
|
|
} else {
|
|
if (connection->fromsrc) {
|
|
x1 = connection->frompad->x + connection->frompad->width;
|
|
x2 = connection->topad->x;
|
|
} else {
|
|
x1 = connection->frompad->x;
|
|
x2 = connection->topad->x + connection->topad->width;
|
|
}
|
|
y1 = connection->frompad->y + (connection->frompad->height / 2);
|
|
y2 = connection->topad->y + (connection->topad->height / 2);
|
|
gnome_canvas_item_i2w(connection->frompad->parent->group,&x1,&y1);
|
|
gnome_canvas_item_w2i(GST_EDITOR_ELEMENT_GROUP(connection->parent),
|
|
&x1,&y1);
|
|
gnome_canvas_item_i2w(connection->topad->parent->group,&x2,&y2);
|
|
gnome_canvas_item_w2i(GST_EDITOR_ELEMENT_GROUP(connection->parent),
|
|
&x2,&y2);
|
|
}
|
|
|
|
connection->points->coords[0] = x1;
|
|
connection->points->coords[1] = y1;
|
|
connection->points->coords[2] = x2;
|
|
connection->points->coords[3] = y2;
|
|
gnome_canvas_item_set(connection->line,
|
|
"points",connection->points,NULL);
|
|
}
|
|
|
|
void gst_editor_connection_set_endpoint(GstEditorConnection *connection,
|
|
gdouble x,gdouble y) {
|
|
connection->x = x;
|
|
connection->y = y;
|
|
if (connection->topad) {
|
|
if (connection->ghost)
|
|
connection->topad->ghostconnection = NULL;
|
|
else
|
|
connection->topad->connection = NULL;
|
|
connection->topad = NULL;
|
|
}
|
|
connection->resize = TRUE;
|
|
gst_editor_connection_resize(connection);
|
|
}
|
|
|
|
void gst_editor_connection_set_endpad(GstEditorConnection *connection,
|
|
GstEditorPad *pad) {
|
|
// first check for the trivial case
|
|
if (connection->topad == pad) return;
|
|
|
|
// now clean up if we've changed pads
|
|
if (connection->topad) {
|
|
if (connection->ghost)
|
|
connection->topad->ghostconnection = NULL;
|
|
else
|
|
connection->topad->connection = NULL;
|
|
}
|
|
connection->topad = pad;
|
|
if (connection->ghost)
|
|
connection->topad->ghostconnection = connection;
|
|
else
|
|
connection->topad->connection = connection;
|
|
connection->resize = TRUE;
|
|
gst_editor_connection_resize(connection);
|
|
}
|
|
|
|
void gst_editor_connection_connect(GstEditorConnection *connection) {
|
|
if (connection->ghost) {
|
|
g_print("uhhh.... Boo!\n");
|
|
} else {
|
|
if (connection->fromsrc)
|
|
gst_pad_connect(connection->frompad->pad,connection->topad->pad);
|
|
else
|
|
gst_pad_connect(connection->topad->pad,connection->frompad->pad);
|
|
}
|
|
}
|