Added first bit of event mechanism for mouse/keyboard stuff.

CVS patchset: 281
CVS date: 2001/07/14 23:17:37

1 files changed, 82 insertions, 0 deletions

diff --git a/src/xine-engine/events.c b/src/xine-engine/events.c
new file mode 100644
index 000000000..f2774168a
--- /dev/null
+++ b/src/xine-engine/events.c
@@ -0,0 +1,82 @@
+/* 
+ * Copyright (C) 2000-2001 the xine project
+ * 
+ * This file is part of xine, a unix video player.
+ * 
+ * xine is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * xine 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 General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
+ *
+ * $Id:
+ *
+ * Event handling functions
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "xine_internal.h"
+
+int xine_register_event_listener(xine_t *this, event_listener_t *listener) {
+  /* Ensure the listener is non-NULL */
+  if(listener == NULL) {
+    return 0;
+  }
+
+  /* Check we hava a slot free */
+  if(this->num_event_listeners < XINE_MAX_EVENT_LISTENERS) {
+    this->event_listeners[this->num_event_listeners++] = listener;
+    return 1;
+  } 
+
+  return 0;
+}
+
+void xine_send_event(xine_t *this, event_t *event, void *data) {
+  uint16_t i;
+  
+  /* Itterate through all event handlers */
+  for(i=0; i < this->num_event_listeners; i++) {
+    (this->event_listeners[i]) (this, event, data);
+  }
+}
+
+int xine_remove_event_listener(xine_t *this, event_listener_t *listener) {
+  uint16_t i, found;
+
+  found = 1; i = 0;
+
+  /* Attempt to find the listener */
+  while((found == 1) && (i < this->num_event_listeners)) {
+    if(this->event_listeners[i] == listener) {
+      /* Set found flag */
+      found = 0;
+
+      this->event_listeners[i] = NULL;
+
+      /* If possible, move the last listener to the hole thats left */
+      if(this->num_event_listeners > 1) {
+	this->event_listeners[i] = this->event_listeners[this->num_event_listeners - 1];
+	this->event_listeners[this->num_event_listeners - 1] = NULL;
+      }
+
+      this->num_event_listeners --;
+    }
+
+    i++;
+  }
+
+  return found;
+}