/* Free buffer space by moving the handle struct right before the useful
part of its data buffer or by moving all the data. */
static void shrink_handle(struct memory_handle *h)
{
size_t delta;
if (!h)
return;
if (h->next && h->filerem == 0 &&
(h->type == TYPE_ID3 || h->type == TYPE_CUESHEET ||
h->type == TYPE_BITMAP || h->type == TYPE_CODEC ||
h->type == TYPE_ATOMIC_AUDIO))
{
/* metadata handle: we can move all of it */
uintptr_t handle_distance =
ringbuf_sub(ringbuf_offset(h->next), h->data);
delta = handle_distance - h->available;
/* The value of delta might change for alignment reasons */
if (!move_handle(&h, &delta, h->available, h->type==TYPE_CODEC))
return;
size_t olddata = h->data;
h->data = ringbuf_add(h->data, delta);
h->ridx = ringbuf_add(h->ridx, delta);
h->widx = ringbuf_add(h->widx, delta);
if (h->type == TYPE_ID3 && h->filesize == sizeof(struct mp3entry)) {
/* when moving an mp3entry we need to readjust its pointers. */
adjust_mp3entry((struct mp3entry *)&buffer[h->data],
(void *)&buffer[h->data],
(const void *)&buffer[olddata]);
} else if (h->type == TYPE_BITMAP) {
/* adjust the bitmap's pointer */
struct bitmap *bmp = (struct bitmap *)&buffer[h->data];
bmp->data = &buffer[h->data + sizeof(struct bitmap)];
}
}
else
{
/* only move the handle struct */
delta = ringbuf_sub(h->ridx, h->data);
if (!move_handle(&h, &delta, 0, true))
return;
h->data = ringbuf_add(h->data, delta);
h->start = ringbuf_add(h->start, delta);
h->available -= delta;
h->offset += delta;
}
}
static gboolean
on_trough_bg_button_press_event (ClutterActor *actor,
ClutterButtonEvent *event,
MxSlider *self)
{
MxSliderPrivate *priv = self->priv;
ClutterActor *stage;
if (event->button != 1)
return FALSE;
if (mx_widget_get_disabled (MX_WIDGET (actor)))
return FALSE;
move_handle (self, event->x, event->y);
stage = clutter_actor_get_stage (priv->handle);
/* Turn off picking for motion events */
clutter_stage_set_motion_events_enabled (CLUTTER_STAGE (stage), FALSE);
priv->capture_handler =
g_signal_connect_after (stage,
"captured-event",
G_CALLBACK (on_handle_capture_event),
self);
return TRUE;
}
