示例#1
0
/**
 * gst_navigation_event_parse_command:
 * @event: A #GstEvent to inspect.
 * @command: Pointer to GstNavigationCommand to receive the type of the
 * navigation event.
 *
 * Inspect a #GstNavigation command event and retrieve the enum value of the
 * associated command.
 *
 * Returns: TRUE if the navigation command could be extracted, otherwise FALSE.
 *
 * Since: 0.10.23
 */
gboolean
gst_navigation_event_parse_command (GstEvent * event,
    GstNavigationCommand * command)
{
  const GstStructure *s;
  gboolean ret = TRUE;

  g_return_val_if_fail (GST_NAVIGATION_EVENT_HAS_TYPE (event, COMMAND), FALSE);

  if (command) {
    s = gst_event_get_structure (event);
    ret = gst_structure_get_uint (s, "command-code", (guint *) command);
    WARN_IF_FAIL (ret, "Couldn't extract command code from command event");
  }

  return ret;
}
示例#2
0
EXPORT_C
#endif

gboolean
gst_navigation_event_parse_command (GstEvent * event,
    GstNavigationCommand * command)
{
  const GstStructure *s;
  g_return_val_if_fail (GST_NAVIGATION_EVENT_HAS_TYPE (event, COMMAND), FALSE);

  if (command) {
    s = gst_event_get_structure (event);
    g_return_val_if_fail (gst_structure_get_uint (s, "command-code", (guint*)command),
        FALSE);
  }

  return TRUE;
}
示例#3
0
EXPORT_C
#endif

gboolean
gst_navigation_event_parse_mouse_move_event (GstEvent * event, gdouble * x,
    gdouble * y)
{
  const GstStructure *s;

  g_return_val_if_fail (GST_NAVIGATION_EVENT_HAS_TYPE (event, MOUSE_MOVE),
      FALSE);

  s = gst_event_get_structure (event);
  if (x)
    g_return_val_if_fail (gst_structure_get_double (s, "pointer_x", x), FALSE);
  if (y)
    g_return_val_if_fail (gst_structure_get_double (s, "pointer_y", y), FALSE);

  return TRUE;
}
示例#4
0
/**
 * gst_navigation_event_parse_mouse_move_event:
 * @event: A #GstEvent to inspect.
 * @x: Pointer to a gdouble to receive the x coordinate of the mouse movement.
 * @y: Pointer to a gdouble to receive the y coordinate of the mouse movement.
 *
 * Inspect a #GstNavigation mouse movement event and extract the coordinates
 * of the event.
 *
 * Returns: TRUE if both coordinates could be extracted, otherwise FALSE.
 *
 * Since: 0.10.23
 */
gboolean
gst_navigation_event_parse_mouse_move_event (GstEvent * event, gdouble * x,
    gdouble * y)
{
  const GstStructure *s;
  gboolean ret = TRUE;

  g_return_val_if_fail (GST_NAVIGATION_EVENT_HAS_TYPE (event, MOUSE_MOVE),
      FALSE);

  s = gst_event_get_structure (event);
  if (x)
    ret &= gst_structure_get_double (s, "pointer_x", x);
  if (y)
    ret &= gst_structure_get_double (s, "pointer_y", y);

  WARN_IF_FAIL (ret, "Couldn't extract positions from mouse move event");

  return ret;
}