static void rna_ImagePreview_icon_reload(PreviewImage *prv)
{
/* will lazy load on next use, but only in case icon is not user-modified! */
if (!(prv->flag[ICON_SIZE_ICON] & PRV_USER_EDITED) && !(prv->flag[ICON_SIZE_PREVIEW] & PRV_USER_EDITED)) {
BKE_previewimg_clear(prv);
}
}
/**
* Generate a PreviewImage from given file path, using thumbnails management, if not yet existing.
*/
PreviewImage *BKE_previewimg_cached_thumbnail_read(
const char *name, const char *path, const int source, bool force_update)
{
PreviewImage *prv = NULL;
void **prv_p;
prv_p = BLI_ghash_lookup_p(gCachedPreviews, name);
if (prv_p) {
prv = *prv_p;
BLI_assert(prv);
}
if (prv && force_update) {
const char *prv_deferred_data = PRV_DEFERRED_DATA(prv);
if (((int)prv_deferred_data[0] == source) && STREQ(&prv_deferred_data[1], path)) {
/* If same path, no need to re-allocate preview, just clear it up. */
BKE_previewimg_clear(prv);
}
else {
BKE_previewimg_free(&prv);
}
}
if (!prv) {
/* We pack needed data for lazy loading (source type, in a single char, and path). */
const size_t deferred_data_size = strlen(path) + 2;
char *deferred_data;
prv = previewimg_create_ex(deferred_data_size);
deferred_data = PRV_DEFERRED_DATA(prv);
deferred_data[0] = source;
memcpy(&deferred_data[1], path, deferred_data_size - 1);
force_update = true;
}
if (force_update) {
if (prv_p) {
*prv_p = prv;
}
else {
BLI_ghash_insert(gCachedPreviews, BLI_strdup(name), prv);
}
}
return prv;
}
