if (!qnum) read_events(FALSE);
return qnum != 0;
}
+
+typedef struct _ObtXQueueCB {
+ ObtXQueueFunc func;
+ gpointer data;
+} ObtXQueueCB;
+
+static ObtXQueueCB *callbacks = NULL;
+static guint n_callbacks = 0;
+
+static gboolean event_read(GIOChannel *s, GIOCondition cond, gpointer data)
+{
+ XEvent ev;
+
+ while (xqueue_next_local(&ev)) {
+ guint i;
+ for (i = 0; i < n_callbacks; ++i)
+ callbacks[i].func(&ev, callbacks[i].data);
+ }
+
+ return TRUE; /* repeat */
+}
+
+void xqueue_listen(void)
+{
+ GIOChannel *ch;
+
+ g_assert(obt_display != NULL);
+
+ ch = g_io_channel_unix_new(ConnectionNumber(obt_display));
+ g_io_add_watch(ch, G_IO_IN, event_read, NULL);
+ g_io_channel_unref(ch);
+}
+
+void xqueue_add_callback(ObtXQueueFunc f, gpointer data)
+{
+ guint i;
+
+ g_return_if_fail(f != NULL);
+
+ for (i = 0; i < n_callbacks; ++i)
+ if (callbacks[i].func == f && callbacks[i].data == data)
+ return;
+
+ callbacks = g_renew(ObtXQueueCB, callbacks, n_callbacks + 1);
+ callbacks[n_callbacks].func = f;
+ callbacks[n_callbacks].data = data;
+ ++n_callbacks;
+}
+
+void xqueue_remove_callback(ObtXQueueFunc f, gpointer data)
+{
+ guint i;
+
+ g_return_if_fail(f != NULL);
+
+ for (i = 0; i < n_callbacks; ++i) {
+ if (callbacks[i].func == f && callbacks[i].data == data) {
+ /* remove it */
+ for (; i < n_callbacks - 1; ++i)
+ callbacks[i] = callbacks[i+1];
+ callbacks = g_renew(ObtXQueueCB, callbacks, n_callbacks - 1);
+ --n_callbacks;
+ break;
+ }
+ }
+}