TileManager *
gimp_projection_get_tiles_at_level (GimpProjection *proj,
gint level,
gboolean *is_premult)
{
g_return_val_if_fail (GIMP_IS_PROJECTION (proj), NULL);
if (! proj->pyramid)
{
const Babl *format;
gint bytes;
gint width;
gint height;
format = gimp_projection_get_format (GIMP_PICKABLE (proj));
bytes = babl_format_get_bytes_per_pixel (format);
gimp_projectable_get_size (proj->projectable, &width, &height);
proj->pyramid = tile_pyramid_new (bytes, width, height);
tile_pyramid_set_validate_proc (proj->pyramid,
(TileValidateProc) gimp_projection_validate_tile,
proj);
}
return tile_pyramid_get_tiles (proj->pyramid, level, is_premult);
}
static GeglBuffer *
gimp_projection_get_buffer (GimpPickable *pickable)
{
GimpProjection *proj = GIMP_PROJECTION (pickable);
if (! proj->buffer)
{
TileManager *tiles = gimp_projection_get_tiles_at_level (proj, 0, NULL);
const Babl *format = gimp_projection_get_format (pickable);
proj->buffer = gimp_tile_manager_create_buffer (tiles, format);
if (proj->sink_node)
{
gegl_node_set (proj->sink_node,
"buffer", proj->buffer,
NULL);
}
}
return proj->buffer;
}
static GeglBuffer *
gimp_projection_get_buffer (GimpPickable *pickable)
{
GimpProjection *proj = GIMP_PROJECTION (pickable);
if (! proj->buffer)
{
GeglNode *graph;
const Babl *format;
gint width;
gint height;
graph = gimp_projectable_get_graph (proj->projectable);
format = gimp_projection_get_format (GIMP_PICKABLE (proj));
gimp_projectable_get_size (proj->projectable, &width, &height);
proj->buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0, width, height),
format);
proj->validate_handler = gimp_tile_handler_projection_new (graph);
gegl_buffer_add_handler (proj->buffer, proj->validate_handler);
/* This used to call gimp_tile_handler_projection_invalidate()
* which forced the entire projection to be constructed in one
* go for new images, causing a potentially huge delay. Now we
* initially validate stuff the normal way, which makes the
* image appear incrementally, but it keeps everything
* responsive.
*/
gimp_projection_add_update_area (proj, 0, 0, width, height);
proj->invalidate_preview = TRUE;
gimp_projection_flush (proj);
}
return proj->buffer;
}