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#include <stdlib.h>
#include <stdio.h>
#include <gtk/gtk.h>
#include "gtk-common.h"
static int n_children = 0;
struct _Child
{
Socket *socket;
};
static void
plug_added (GtkWidget *widget,
Socket *socket)
{
g_print ("Plug added to socket\n");
gtk_widget_show (socket->socket);
gtk_widget_hide (socket->frame);
}
static gboolean
plug_removed (GtkWidget *widget,
Socket *socket)
{
g_print ("Plug removed from socket\n");
gtk_widget_hide (socket->socket);
gtk_widget_show (socket->frame);
return TRUE;
}
static void
socket_destroy (GtkWidget *widget,
Socket *socket)
{
if (socket->child)
socket->child->socket = NULL;
g_free (socket);
}
Socket *
socket_new (void)
{
GtkWidget *label;
Socket *socket = g_new (Socket, 1);
socket->box = gtk_vbox_new (FALSE, 0);
socket->socket = gtk_socket_new ();
gtk_box_pack_start (GTK_BOX (socket->box), socket->socket, TRUE, TRUE, 0);
socket->frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (socket->frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (socket->box), socket->frame, TRUE, TRUE, 0);
gtk_widget_show (socket->frame);
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label), "<span color=\"red\">Empty</span>");
gtk_container_add (GTK_CONTAINER (socket->frame), label);
gtk_widget_show (label);
g_signal_connect (socket->socket, "plug_added",
G_CALLBACK (plug_added), socket);
g_signal_connect (socket->socket, "plug_removed",
G_CALLBACK (plug_removed), socket);
g_signal_connect_after (socket->socket, "destroy",
G_CALLBACK (socket_destroy), socket);
socket->child = NULL;
return socket;
}
static gboolean
child_read_watch (GIOChannel *channel, GIOCondition cond, gpointer data)
{
GIOStatus status;
GError *error = NULL;
Child *child = data;
char *line;
gsize term;
int xid;
status = g_io_channel_read_line (channel, &line, NULL, &term, &error);
switch (status)
{
case G_IO_STATUS_NORMAL:
if (child->socket && !GTK_SOCKET (child->socket->socket)->plug_window)
{
line[term] = '\0';
xid = strtol (line, NULL, 0);
if (xid == 0)
{
fprintf (stderr, "Invalid window id '%s'\n", line);
}
else
{
gtk_socket_add_id (GTK_SOCKET (child->socket->socket), xid);
}
}
g_free (line);
return TRUE;
case G_IO_STATUS_AGAIN:
return TRUE;
case G_IO_STATUS_EOF:
n_children--;
if (child->socket)
child->socket->child = NULL;
g_free (child);
g_io_channel_shutdown (channel, FALSE, NULL);
return FALSE;
case G_IO_STATUS_ERROR:
fprintf (stderr, "Error reading fd from child: %s\n", error->message);
exit (1);
return FALSE;
default:
g_assert_not_reached ();
return FALSE;
}
}
void
socket_start_child (Socket *socket,
gboolean active,
gboolean qt)
{
char *argv[3] = { NULL, NULL, NULL };
char buffer[20];
int out_fd;
GIOChannel *channel;
GError *error = NULL;
socket->child = g_new (Child, 1);
socket->child->socket = socket;
argv[0] = qt ? "./qt-client" : "./gtk-client";
if (active)
{
sprintf(buffer, "%#lx", (gulong) gtk_socket_get_id (GTK_SOCKET (socket->socket)));
argv[1] = buffer;
}
if (!g_spawn_async_with_pipes (NULL, argv, NULL, 0, NULL, NULL, NULL, NULL, &out_fd, NULL, &error))
{
fprintf (stderr, "Can't exec %s: %s\n", argv[0], error->message);
exit (1);
}
n_children++;
channel = g_io_channel_unix_new (out_fd);
g_io_channel_set_flags (channel, G_IO_FLAG_NONBLOCK, &error);
if (error)
{
fprintf (stderr, "Error making channel non-blocking: %s\n", error->message);
exit (1);
}
g_io_add_watch (channel, G_IO_IN | G_IO_HUP, child_read_watch, socket->child);
g_io_channel_unref (channel);
}
void
wait_for_children ()
{
if (n_children)
{
g_print ("Waiting for children to exit\n");
while (n_children)
g_main_context_iteration (NULL, TRUE);
}
}
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