/* helper - add NLA Tracks to empty (and selected) AnimData blocks */
bool nlaedit_add_tracks_empty(bAnimContext *ac)
{
ListBase anim_data = {NULL, NULL};
bAnimListElem *ale;
int filter;
bool added = false;
/* get a list of the selected AnimData blocks in the NLA */
filter = (ANIMFILTER_DATA_VISIBLE | ANIMFILTER_LIST_VISIBLE | ANIMFILTER_ANIMDATA | ANIMFILTER_SEL | ANIMFILTER_NODUPLIS);
ANIM_animdata_filter(ac, &anim_data, filter, ac->data, ac->datatype);
/* check if selected AnimData blocks are empty, and add tracks if so... */
for (ale = anim_data.first; ale; ale = ale->next) {
AnimData *adt = ale->adt;
/* sanity check */
BLI_assert(adt->flag & ADT_UI_SELECTED);
/* ensure it is empty */
if (BLI_listbase_is_empty(&adt->nla_tracks)) {
/* add new track to this AnimData block then */
add_nlatrack(adt, NULL);
added = true;
}
}
/* cleanup */
ANIM_animdata_freelist(&anim_data);
return added;
}
/* needs wrapper function to push notifier */
static NlaTrack *rna_NlaTrack_new(AnimData *adt, bContext *C, NlaTrack *track)
{
NlaTrack *new_track = add_nlatrack(adt, track);
WM_event_add_notifier(C, NC_ANIMATION | ND_NLA | NA_ADDED, NULL);
return new_track;
}
/* helper - add NLA Tracks alongside existing ones */
bool nlaedit_add_tracks_existing(bAnimContext *ac, bool above_sel)
{
ListBase anim_data = {NULL, NULL};
bAnimListElem *ale;
int filter;
AnimData *lastAdt = NULL;
bool added = false;
/* get a list of the (selected) NLA Tracks being shown in the NLA */
filter = (ANIMFILTER_DATA_VISIBLE | ANIMFILTER_LIST_VISIBLE | ANIMFILTER_SEL | ANIMFILTER_NODUPLIS);
ANIM_animdata_filter(ac, &anim_data, filter, ac->data, ac->datatype);
/* add tracks... */
for (ale = anim_data.first; ale; ale = ale->next) {
if (ale->type == ANIMTYPE_NLATRACK) {
NlaTrack *nlt = (NlaTrack *)ale->data;
AnimData *adt = ale->adt;
/* check if just adding a new track above this one,
* or whether we're adding a new one to the top of the stack that this one belongs to
*/
if (above_sel) {
/* just add a new one above this one */
add_nlatrack(adt, nlt);
added = true;
}
else if ((lastAdt == NULL) || (adt != lastAdt)) {
/* add one track to the top of the owning AnimData's stack, then don't add anymore to this stack */
add_nlatrack(adt, NULL);
lastAdt = adt;
added = true;
}
}
}
/* free temp data */
ANIM_animdata_freelist(&anim_data);
return added;
}
