/* make a copy of a given gpencil datablock */
bGPdata *gpencil_data_duplicate(bGPdata *src, bool internal_copy)
{
bGPDlayer *gpl, *gpld;
bGPdata *dst;
/* error checking */
if (src == NULL)
return NULL;
/* make a copy of the base-data */
if (internal_copy) {
/* make a straight copy for undo buffers used during stroke drawing */
dst = MEM_dupallocN(src);
}
else {
/* make a copy when others use this */
dst = BKE_libblock_copy(&src->id);
}
/* copy layers */
BLI_listbase_clear(&dst->layers);
for (gpl = src->layers.first; gpl; gpl = gpl->next) {
/* make a copy of source layer and its data */
gpld = gpencil_layer_duplicate(gpl);
BLI_addtail(&dst->layers, gpld);
}
/* return new */
return dst;
}
int ED_undo_gpencil_step(bContext *C, int step, const char *name)
{
bGPdata **gpd_ptr = NULL, *new_gpd = NULL;
gpd_ptr = gpencil_data_get_pointers(C, NULL);
if (step == 1) { /* undo */
//printf("\t\tGP - undo step\n");
if (cur_node->prev) {
if (!name || strcmp(cur_node->name, name) == 0) {
cur_node = cur_node->prev;
new_gpd = cur_node->gpd;
}
}
}
else if (step == -1) {
//printf("\t\tGP - redo step\n");
if (cur_node->next) {
if (!name || strcmp(cur_node->name, name) == 0) {
cur_node = cur_node->next;
new_gpd = cur_node->gpd;
}
}
}
if (new_gpd) {
if (gpd_ptr) {
if (*gpd_ptr) {
bGPdata *gpd = *gpd_ptr;
bGPDlayer *gpl, *gpld;
free_gpencil_layers(&gpd->layers);
/* copy layers */
gpd->layers.first = gpd->layers.last = NULL;
for (gpl = new_gpd->layers.first; gpl; gpl = gpl->next) {
/* make a copy of source layer and its data */
gpld = gpencil_layer_duplicate(gpl);
BLI_addtail(&gpd->layers, gpld);
}
}
}
}
WM_event_add_notifier(C, NC_SCREEN | ND_GPENCIL | NA_EDITED, NULL);
return OPERATOR_FINISHED;
}
/* make a copy of a given gpencil datablock */
bGPdata *gpencil_data_duplicate(bGPdata *src)
{
bGPDlayer *gpl, *gpld;
bGPdata *dst;
/* error checking */
if (src == NULL)
return NULL;
/* make a copy of the base-data */
dst = MEM_dupallocN(src);
/* copy layers */
BLI_listbase_clear(&dst->layers);
for (gpl = src->layers.first; gpl; gpl = gpl->next) {
/* make a copy of source layer and its data */
gpld = gpencil_layer_duplicate(gpl);
BLI_addtail(&dst->layers, gpld);
}
/* return new */
return dst;
}
