mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-25 03:01:03 +00:00
289 lines
9.1 KiB
C
289 lines
9.1 KiB
C
#include <gnome.h>
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#include <gst/gst.h>
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#include <gst/gstutils.h>
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#include "gsteditor.h"
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/* class functions */
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static void gst_editor_connection_class_init(GstEditorConnectionClass *klass);
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static void gst_editor_connection_init(GstEditorConnection *connection);
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static void gst_editor_connection_set_arg(GtkObject *object,GtkArg *arg,guint id);
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static void gst_editor_connection_get_arg(GtkObject *object,GtkArg *arg,guint id);
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static void gst_editor_connection_destroy(GtkObject *object);
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static void gst_editor_connection_realize(GstEditorConnection *connection);
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/* events fired by items within self */
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static gint gst_editor_connection_line_event(GnomeCanvasItem *item,
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GdkEvent *event,
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GstEditorConnection *connection);
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/* utility functions */
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enum {
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ARG_0,
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ARG_X,
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ARG_Y,
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ARG_FROMPAD,
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ARG_TOPAD,
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ARG_GHOST,
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};
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enum {
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LAST_SIGNAL
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};
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static GtkObjectClass *parent_class;
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static guint gst_editor_connection_signals[LAST_SIGNAL] = { 0 };
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GtkType gst_editor_connection_get_type() {
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static GtkType connection_type = 0;
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if (!connection_type) {
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static const GtkTypeInfo connection_info = {
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"GstEditorConnection",
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sizeof(GstEditorConnection),
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sizeof(GstEditorConnectionClass),
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(GtkClassInitFunc)gst_editor_connection_class_init,
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(GtkObjectInitFunc)gst_editor_connection_init,
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NULL,
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NULL,
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(GtkClassInitFunc)NULL,
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};
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connection_type = gtk_type_unique(gtk_object_get_type(),&connection_info);
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}
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return connection_type;
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}
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static void gst_editor_connection_class_init(GstEditorConnectionClass *klass) {
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GtkObjectClass *object_class;
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object_class = (GtkObjectClass*)klass;
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parent_class = gtk_type_class(gnome_canvas_line_get_type());
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gtk_object_add_arg_type("GstEditorConnection::x",GTK_TYPE_DOUBLE,
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GTK_ARG_READWRITE,ARG_X);
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gtk_object_add_arg_type("GstEditorConnection::y",GTK_TYPE_DOUBLE,
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GTK_ARG_READWRITE,ARG_Y);
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gtk_object_add_arg_type("GstEditorConnection::frompad",GTK_TYPE_POINTER,
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GTK_ARG_READWRITE,ARG_FROMPAD);
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gtk_object_add_arg_type("GstEditorConnection::topad",GTK_TYPE_POINTER,
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GTK_ARG_READWRITE,ARG_TOPAD);
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gtk_object_add_arg_type("GstEditorConnection::ghost",GTK_TYPE_BOOL,
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GTK_ARG_READWRITE,ARG_GHOST);
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klass->realize = gst_editor_connection_realize;
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object_class->set_arg = gst_editor_connection_set_arg;
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object_class->get_arg = gst_editor_connection_get_arg;
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object_class->destroy = gst_editor_connection_destroy;
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}
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static void gst_editor_connection_init(GstEditorConnection *connection) {
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connection->points = gnome_canvas_points_new(2);
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}
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GstEditorConnection *gst_editor_connection_new(GstEditorBin *parent,
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GstEditorPad *frompad) {
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GstEditorConnection *connection;
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g_return_if_fail(parent != NULL);
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g_return_if_fail(GST_IS_EDITOR_BIN(parent));
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g_return_if_fail(frompad != NULL);
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g_return_if_fail(GST_IS_EDITOR_PAD(frompad));
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connection = GST_EDITOR_CONNECTION(gtk_type_new(GST_TYPE_EDITOR_CONNECTION));
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connection->frompad = frompad;
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connection->frompad->connection = connection;
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connection->fromsrc = connection->frompad->issrc;
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connection->parent = parent;
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gst_editor_connection_realize(connection);
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return connection;
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}
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static void gst_editor_connection_set_arg(GtkObject *object,GtkArg *arg,guint id) {
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GstEditorConnection *connection;
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/* get the major types of this object */
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connection = GST_EDITOR_CONNECTION(object);
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switch (id) {
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case ARG_X:
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connection->x = GTK_VALUE_DOUBLE(*arg);
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connection->resize = TRUE;
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break;
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case ARG_Y:
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connection->y = GTK_VALUE_DOUBLE(*arg);
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connection->resize = TRUE;
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break;
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case ARG_TOPAD:
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if (connection->topad) {
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if (connection->ghost)
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connection->topad->ghostconnection = NULL;
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else
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connection->topad->connection = NULL;
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}
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connection->topad = GTK_VALUE_POINTER(*arg);
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/* if this is the same type, refuse */
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if (connection->topad &&
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(connection->frompad->issrc == connection->topad->issrc))
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connection->topad = NULL;
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if (connection->topad) {
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if (connection->ghost)
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connection->topad->ghostconnection = connection;
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else
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connection->topad->connection = connection;
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}
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connection->resize = TRUE;
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break;
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case ARG_GHOST:
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connection->ghost = GTK_VALUE_BOOL(*arg);
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break;
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default:
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g_warning("gsteditorconnection: unknown arg!");
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break;
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}
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gst_editor_connection_resize(connection);
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}
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static void gst_editor_connection_get_arg(GtkObject *object,GtkArg *arg,guint id) {
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GstEditorConnection *connection;
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/* get the major types of this object */
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connection = GST_EDITOR_CONNECTION(object);
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switch (id) {
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case ARG_X:
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GTK_VALUE_INT(*arg) = connection->x;
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break;
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case ARG_Y:
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GTK_VALUE_INT(*arg) = connection->y;
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break;
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default:
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arg->type = GTK_TYPE_INVALID;
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break;
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}
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}
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static void gst_editor_connection_realize(GstEditorConnection *connection) {
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connection->points->coords[0] = 0.0;
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connection->points->coords[1] = 0.0;
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connection->points->coords[2] = 0.0;
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connection->points->coords[3] = 0.0;
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connection->line = gnome_canvas_item_new(
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GST_EDITOR_ELEMENT(connection->parent)->group,
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gnome_canvas_line_get_type(),
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"points",connection->points,NULL);
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}
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static void gst_editor_connection_destroy(GtkObject *object) {
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GstEditorConnection *connection = GST_EDITOR_CONNECTION(object);
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gtk_object_destroy(GTK_OBJECT(connection->line));
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}
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void gst_editor_connection_resize(GstEditorConnection *connection) {
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gdouble x1,y1,x2,y2;
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if (connection->resize != TRUE) return;
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connection->resize = FALSE;
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// g_print("resizing connection, frompad is %p, topad is %p\n",
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// connection->frompad,connection->topad);
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/* calculate the new endpoints */
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if (connection->topad == NULL) {
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/* our base point is the source pad */
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if (connection->fromsrc)
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x1 = connection->frompad->x + connection->frompad->width;
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else
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x1 = connection->frompad->x;
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y1 = connection->frompad->y + (connection->frompad->height / 2);
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x2 = connection->x;
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y2 = connection->y;
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/* NOTE: coords are in the following state:
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x1,y1: item coords relative to the element's group
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x2,y2: item coords relative to the bin's group
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This means translating the x1,y1 coords into world, then into bin.
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*/
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gnome_canvas_item_i2w(connection->frompad->parent->group,&x1,&y1);
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gnome_canvas_item_w2i(GST_EDITOR_ELEMENT_GROUP(connection->parent),
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&x1,&y1);
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} else {
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if (connection->fromsrc) {
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x1 = connection->frompad->x + connection->frompad->width;
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x2 = connection->topad->x;
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} else {
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x1 = connection->frompad->x;
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x2 = connection->topad->x + connection->topad->width;
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}
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y1 = connection->frompad->y + (connection->frompad->height / 2);
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y2 = connection->topad->y + (connection->topad->height / 2);
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gnome_canvas_item_i2w(connection->frompad->parent->group,&x1,&y1);
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gnome_canvas_item_w2i(GST_EDITOR_ELEMENT_GROUP(connection->parent),
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&x1,&y1);
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gnome_canvas_item_i2w(connection->topad->parent->group,&x2,&y2);
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gnome_canvas_item_w2i(GST_EDITOR_ELEMENT_GROUP(connection->parent),
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&x2,&y2);
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}
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connection->points->coords[0] = x1;
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connection->points->coords[1] = y1;
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connection->points->coords[2] = x2;
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connection->points->coords[3] = y2;
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gnome_canvas_item_set(connection->line,
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"points",connection->points,NULL);
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}
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void gst_editor_connection_set_endpoint(GstEditorConnection *connection,
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gdouble x,gdouble y) {
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connection->x = x;
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connection->y = y;
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if (connection->topad) {
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if (connection->ghost)
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connection->topad->ghostconnection = NULL;
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else
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connection->topad->connection = NULL;
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connection->topad = NULL;
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}
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connection->resize = TRUE;
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gst_editor_connection_resize(connection);
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}
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void gst_editor_connection_set_endpad(GstEditorConnection *connection,
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GstEditorPad *pad) {
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// first check for the trivial case
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if (connection->topad == pad) return;
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// now clean up if we've changed pads
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if (connection->topad) {
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if (connection->ghost)
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connection->topad->ghostconnection = NULL;
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else
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connection->topad->connection = NULL;
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}
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connection->topad = pad;
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if (connection->ghost)
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connection->topad->ghostconnection = connection;
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else
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connection->topad->connection = connection;
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connection->resize = TRUE;
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gst_editor_connection_resize(connection);
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}
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void gst_editor_connection_connect(GstEditorConnection *connection) {
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if (connection->ghost) {
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g_print("uhhh.... Boo!\n");
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} else {
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if (connection->fromsrc)
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gst_pad_connect(connection->frompad->pad,connection->topad->pad);
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else
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gst_pad_connect(connection->topad->pad,connection->frompad->pad);
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}
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}
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