Functions

Includes

#include <abydos.h>

Description

Some formats may compose an image out of several layers. It could simply be a set of partly transparent pixmaps placed on top of each other. But layers could also be more like filter operations. Sometimes the internal organization of the layers may be in the form of a tree. But abydos will in that case always flatten the tree and index the layers sequentially.

Functions

int
abydos_get_layer_count (abydos_t *ar);

cairo_bool_t
abydos_get_layer_visibility (abydos_t *ar,
                             int layer);

void
abydos_set_layer_visibility (abydos_t *ar,
                             int layer,
                             cairo_bool_t visibility);