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#define __NR_ARENA_GROUP_C__
/*
* RGBA display list system for inkscape
*
* Author:
* Lauris Kaplinski <lauris@kaplinski.com>
*
* Copyright (C) 2001-2002 Lauris Kaplinski
* Copyright (C) 2001 Ximian, Inc.
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "nr-arena-group.h"
static void nr_arena_group_class_init (NRArenaGroupClass *klass);
static void nr_arena_group_init (NRArenaGroup *group);
static NRArenaItem *nr_arena_group_children (NRArenaItem *item);
static NRArenaItem *nr_arena_group_last_child (NRArenaItem *item);
static void nr_arena_group_add_child (NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref);
static void nr_arena_group_remove_child (NRArenaItem *item, NRArenaItem *child);
static void nr_arena_group_set_child_position (NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref);
static unsigned int nr_arena_group_update (NRArenaItem *item, NRRectL *area, NRGC *gc, unsigned int state, unsigned int reset);
static unsigned int nr_arena_group_render (NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags);
static unsigned int nr_arena_group_clip (NRArenaItem *item, NRRectL *area, NRPixBlock *pb);
static NRArenaItem *nr_arena_group_pick (NRArenaItem *item, NR::Point p, double delta, unsigned int sticky);
static NRArenaItemClass *parent_class;
NRType
nr_arena_group_get_type (void)
{
static NRType type = 0;
if (!type) {
type = nr_object_register_type (NR_TYPE_ARENA_ITEM,
"NRArenaGroup",
sizeof (NRArenaGroupClass),
sizeof (NRArenaGroup),
(void (*) (NRObjectClass *)) nr_arena_group_class_init,
(void (*) (NRObject *)) nr_arena_group_init);
}
return type;
}
static void
nr_arena_group_class_init (NRArenaGroupClass *klass)
{
NRObjectClass *object_class;
NRArenaItemClass *item_class;
object_class = (NRObjectClass *) klass;
item_class = (NRArenaItemClass *) klass;
parent_class = (NRArenaItemClass *) ((NRObjectClass *) klass)->parent;
object_class->cpp_ctor = NRObject::invoke_ctor<NRArenaGroup>;
item_class->children = nr_arena_group_children;
item_class->last_child = nr_arena_group_last_child;
item_class->add_child = nr_arena_group_add_child;
item_class->set_child_position = nr_arena_group_set_child_position;
item_class->remove_child = nr_arena_group_remove_child;
item_class->update = nr_arena_group_update;
item_class->render = nr_arena_group_render;
item_class->clip = nr_arena_group_clip;
item_class->pick = nr_arena_group_pick;
}
static void
nr_arena_group_init (NRArenaGroup *group)
{
group->transparent = FALSE;
group->children = NULL;
group->last = NULL;
nr_matrix_set_identity (&group->child_transform);
#ifdef arena_item_tile_cache
group->skipCaching=true;
#endif
}
static NRArenaItem *
nr_arena_group_children (NRArenaItem *item)
{
NRArenaGroup *group = NR_ARENA_GROUP (item);
return group->children;
}
static NRArenaItem *
nr_arena_group_last_child (NRArenaItem *item)
{
NRArenaGroup *group = NR_ARENA_GROUP (item);
return group->last;
}
static void
nr_arena_group_add_child (NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref)
{
NRArenaGroup *group = NR_ARENA_GROUP (item);
if (!ref) {
group->children = nr_arena_item_attach_ref (item, child, NULL, group->children);
} else {
ref->next = nr_arena_item_attach_ref (item, child, ref, ref->next);
}
if (ref == group->last) group->last = child;
nr_arena_item_request_update (item, NR_ARENA_ITEM_STATE_ALL, FALSE);
}
static void
nr_arena_group_remove_child (NRArenaItem *item, NRArenaItem *child)
{
NRArenaGroup *group = NR_ARENA_GROUP (item);
if (child == group->last) group->last = child->prev;
if (child->prev) {
nr_arena_item_detach_unref (item, child);
} else {
group->children = nr_arena_item_detach_unref (item, child);
}
nr_arena_item_request_update (item, NR_ARENA_ITEM_STATE_ALL, FALSE);
}
static void
nr_arena_group_set_child_position (NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref)
{
NRArenaGroup *group = NR_ARENA_GROUP (item);
if (child == group->last) group->last = child->prev;
if (child->prev) {
nr_arena_item_detach_unref (item, child);
} else {
group->children = nr_arena_item_detach_unref (item, child);
}
if (!ref) {
group->children = nr_arena_item_attach_ref (item, child, NULL, group->children);
} else {
ref->next = nr_arena_item_attach_ref (item, child, ref, ref->next);
}
if (ref == group->last) group->last = child;
nr_arena_item_request_render (child);
}
static unsigned int
nr_arena_group_update (NRArenaItem *item, NRRectL *area, NRGC *gc, unsigned int state, unsigned int reset)
{
unsigned int newstate;
NRArenaGroup *group = NR_ARENA_GROUP (item);
unsigned int beststate = NR_ARENA_ITEM_STATE_ALL;
for (NRArenaItem *child = group->children; child != NULL; child = child->next) {
NRGC cgc(gc);
nr_matrix_multiply (&cgc.transform, &group->child_transform, &gc->transform);
newstate = nr_arena_item_invoke_update (child, area, &cgc, state, reset);
beststate = beststate & newstate;
}
if (beststate & NR_ARENA_ITEM_STATE_BBOX) {
nr_rect_l_set_empty (&item->bbox);
for (NRArenaItem *child = group->children; child != NULL; child = child->next) {
nr_rect_l_union (&item->bbox, &item->bbox, &child->bbox);
}
}
return beststate;
}
static unsigned int
nr_arena_group_render (NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags)
{
NRArenaGroup *group = NR_ARENA_GROUP (item);
unsigned int ret = item->state;
/* Just compose children into parent buffer */
for (NRArenaItem *child = group->children; child != NULL; child = child->next) {
ret = nr_arena_item_invoke_render (child, area, pb, flags);
if (ret & NR_ARENA_ITEM_STATE_INVALID) break;
}
return ret;
}
static unsigned int
nr_arena_group_clip (NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
{
NRArenaGroup *group = NR_ARENA_GROUP (item);
unsigned int ret = item->state;
/* Just compose children into parent buffer */
for (NRArenaItem *child = group->children; child != NULL; child = child->next) {
ret = nr_arena_item_invoke_clip (child, area, pb);
if (ret & NR_ARENA_ITEM_STATE_INVALID) break;
}
return ret;
}
static NRArenaItem *
nr_arena_group_pick (NRArenaItem *item, NR::Point p, double delta, unsigned int sticky)
{
NRArenaGroup *group = NR_ARENA_GROUP (item);
for (NRArenaItem *child = group->last; child != NULL; child = child->prev) {
NRArenaItem *picked = nr_arena_item_invoke_pick (child, p, delta, sticky);
if (picked)
return (group->transparent) ? picked : item;
}
return NULL;
}
void
nr_arena_group_set_transparent (NRArenaGroup *group, unsigned int transparent)
{
nr_return_if_fail (group != NULL);
nr_return_if_fail (NR_IS_ARENA_GROUP (group));
group->transparent = transparent;
}
void nr_arena_group_set_child_transform(NRArenaGroup *group, NR::Matrix const &t)
{
NRMatrix nt(t);
nr_arena_group_set_child_transform(group, &nt);
}
void nr_arena_group_set_child_transform(NRArenaGroup *group, NRMatrix const *t)
{
if (!t) t = &NR_MATRIX_IDENTITY;
if (!NR_MATRIX_DF_TEST_CLOSE (t, &group->child_transform, NR_EPSILON)) {
nr_arena_item_request_render (NR_ARENA_ITEM (group));
group->child_transform = *t;
nr_arena_item_request_update (NR_ARENA_ITEM (group), NR_ARENA_ITEM_STATE_ALL, TRUE);
}
}
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