GeglNode *
gimp_projection_get_sink_node (GimpProjection *proj)
{
GeglNode *graph;
GeglBuffer *buffer;
g_return_val_if_fail (GIMP_IS_PROJECTION (proj), NULL);
if (proj->sink_node)
return proj->sink_node;
proj->graph = gegl_node_new ();
g_object_set (proj->graph,
"dont-cache", TRUE,
NULL);
graph = gimp_projectable_get_graph (proj->projectable);
gegl_node_add_child (proj->graph, graph);
buffer = gimp_projection_get_buffer (GIMP_PICKABLE (proj));
proj->sink_node =
gegl_node_new_child (proj->graph,
"operation", "gegl:write-buffer",
"buffer", buffer,
NULL);
gegl_node_connect_to (graph, "output",
proj->sink_node, "input");
return proj->sink_node;
}
static gboolean
gimp_projection_get_pixel_at (GimpPickable *pickable,
gint x,
gint y,
const Babl *format,
gpointer pixel)
{
GeglBuffer *buffer = gimp_projection_get_buffer (pickable);
if (x < 0 ||
y < 0 ||
x >= gegl_buffer_get_width (buffer) ||
y >= gegl_buffer_get_height (buffer))
return FALSE;
gegl_buffer_sample (buffer, x, y, NULL, pixel, format,
GEGL_SAMPLER_NEAREST, GEGL_ABYSS_NONE);
return TRUE;
}
static void
gimp_projection_pickable_flush (GimpPickable *pickable)
{
GimpProjection *proj = GIMP_PROJECTION (pickable);
/* create the buffer if it doesn't exist */
gimp_projection_get_buffer (pickable);
gimp_projection_finish_draw (proj);
gimp_projection_flush_now (proj);
if (proj->invalidate_preview)
{
/* invalidate the preview here since it is constructed from
* the projection
*/
proj->invalidate_preview = FALSE;
gimp_projectable_invalidate_preview (proj->projectable);
}
}
static void
gimp_projection_invalidate (GimpProjection *proj,
guint x,
guint y,
guint w,
guint h)
{
if (proj->pyramid)
{
if (proj->sink_node)
{
GeglBuffer *buffer;
buffer = gimp_projection_get_buffer (GIMP_PICKABLE (proj));
/* makes the buffer drop all GimpTiles */
gimp_gegl_buffer_refetch_tiles (buffer);
}
tile_pyramid_invalidate_area (proj->pyramid, x, y, w, h);
}
}