/* callback to remove target variable from active driver */
static void driver_delete_var_cb(bContext *UNUSED(C), void *driver_v, void *dvar_v)
{
ChannelDriver *driver = (ChannelDriver *)driver_v;
DriverVar *dvar = (DriverVar *)dvar_v;
/* remove the active variable */
driver_free_variable_ex(driver, dvar);
}
/* Paste the variables in the buffer to the given FCurve */
bool ANIM_driver_vars_paste(ReportList *reports, FCurve *fcu, bool replace)
{
ChannelDriver *driver = (fcu) ? fcu->driver : NULL;
ListBase tmp_list = {NULL, NULL};
/* sanity checks */
if (BLI_listbase_is_empty(&driver_vars_copybuf)) {
BKE_report(reports, RPT_ERROR, "No driver variables in clipboard to paste");
return false;
}
if (ELEM(NULL, fcu, fcu->driver)) {
BKE_report(reports, RPT_ERROR, "Cannot paste driver variables without a driver");
return false;
}
/* 1) Make a new copy of the variables in the buffer - these will get pasted later... */
driver_variables_copy(&tmp_list, &driver_vars_copybuf);
/* 2) Prepare destination array */
if (replace) {
DriverVar *dvar, *dvarn;
/* Free all existing vars first - We aren't retaining anything */
for (dvar = driver->variables.first; dvar; dvar = dvarn) {
dvarn = dvar->next;
driver_free_variable_ex(driver, dvar);
}
BLI_listbase_clear(&driver->variables);
}
/* 3) Add new vars */
if (driver->variables.last) {
DriverVar *last = driver->variables.last;
DriverVar *first = tmp_list.first;
last->next = first;
first->prev = last;
driver->variables.last = tmp_list.last;
}
else {
driver->variables.first = tmp_list.first;
driver->variables.last = tmp_list.last;
}
#ifdef WITH_PYTHON
/* since driver variables are cached, the expression needs re-compiling too */
if (driver->type == DRIVER_TYPE_PYTHON)
driver->flag |= DRIVER_FLAG_RENAMEVAR;
#endif
return true;
}