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#define __NR_ARENA_ITEM_C__
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* RGBA display list system for inkscape
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* Lauris Kaplinski <lauris@kaplinski.com>
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* Copyright (C) 2001-2002 Lauris Kaplinski
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* Copyright (C) 2001 Ximian, Inc.
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* Released under GNU GPL, read the file 'COPYING' for more information
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#define noNR_ARENA_ITEM_VERBOSE
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#define noNR_ARENA_ITEM_DEBUG_CASCADE
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#include <libnr/nr-blit.h>
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#include <libnr/nr-pixops.h>
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#include "nr-arena-item.h"
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#include "helper/geom.h"
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#include "nr-filter.h"
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#include "nr-arena-group.h"
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#include "preferences.h"
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namespace GC = Inkscape::GC;
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static void nr_arena_item_class_init (NRArenaItemClass *klass);
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static void nr_arena_item_init (NRArenaItem *item);
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static void nr_arena_item_private_finalize (NRObject *object);
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static NRObjectClass *parent_class;
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nr_arena_item_get_type (void)
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static NRType type = 0;
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type = nr_object_register_type (NR_TYPE_OBJECT,
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sizeof (NRArenaItemClass),
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(void (*)(NRObjectClass *))
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nr_arena_item_class_init,
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(void (*)(NRObject *))
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nr_arena_item_class_init (NRArenaItemClass *klass)
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NRObjectClass *object_class;
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object_class = (NRObjectClass *) klass;
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parent_class = ((NRObjectClass *) klass)->parent;
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object_class->finalize = nr_arena_item_private_finalize;
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object_class->cpp_ctor = NRObject::invoke_ctor < NRArenaItem >;
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nr_arena_item_init (NRArenaItem *item)
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item->next = item->prev = NULL;
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item->sensitive = TRUE;
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memset (&item->bbox, 0, sizeof (item->bbox));
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memset (&item->drawbox, 0, sizeof (item->drawbox));
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item->transform = NULL;
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item->render_opacity = FALSE;
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item->transform = NULL;
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item->background_pb = NULL;
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item->background_new = false;
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nr_arena_item_private_finalize (NRObject *object)
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NRArenaItem *item = static_cast < NRArenaItem * >(object);
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item->transform = NULL;
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((NRObjectClass *) (parent_class))->finalize (object);
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nr_arena_item_children (NRArenaItem *item)
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nr_return_val_if_fail (item != NULL, NULL);
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nr_return_val_if_fail (NR_IS_ARENA_ITEM (item), NULL);
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if (NR_ARENA_ITEM_VIRTUAL (item, children))
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return NR_ARENA_ITEM_VIRTUAL (item, children) (item);
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nr_arena_item_last_child (NRArenaItem *item)
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nr_return_val_if_fail (item != NULL, NULL);
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nr_return_val_if_fail (NR_IS_ARENA_ITEM (item), NULL);
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if (NR_ARENA_ITEM_VIRTUAL (item, last_child)) {
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return NR_ARENA_ITEM_VIRTUAL (item, last_child) (item);
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NRArenaItem *ref = nr_arena_item_children (item);
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nr_arena_item_add_child (NRArenaItem *item, NRArenaItem *child,
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nr_return_if_fail (item != NULL);
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nr_return_if_fail (NR_IS_ARENA_ITEM (item));
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nr_return_if_fail (child != NULL);
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nr_return_if_fail (NR_IS_ARENA_ITEM (child));
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nr_return_if_fail (child->parent == NULL);
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nr_return_if_fail (child->prev == NULL);
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nr_return_if_fail (child->next == NULL);
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nr_return_if_fail (child->arena == item->arena);
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nr_return_if_fail (child != ref);
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nr_return_if_fail (!ref || NR_IS_ARENA_ITEM (ref));
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nr_return_if_fail (!ref || (ref->parent == item));
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if (NR_ARENA_ITEM_VIRTUAL (item, add_child))
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NR_ARENA_ITEM_VIRTUAL (item, add_child) (item, child, ref);
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nr_arena_item_remove_child (NRArenaItem *item, NRArenaItem *child)
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nr_return_if_fail (item != NULL);
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nr_return_if_fail (NR_IS_ARENA_ITEM (item));
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nr_return_if_fail (child != NULL);
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nr_return_if_fail (NR_IS_ARENA_ITEM (child));
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nr_return_if_fail (child->parent == item);
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if (NR_ARENA_ITEM_VIRTUAL (item, remove_child))
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NR_ARENA_ITEM_VIRTUAL (item, remove_child) (item, child);
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nr_arena_item_set_child_position (NRArenaItem *item, NRArenaItem *child,
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nr_return_if_fail (item != NULL);
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nr_return_if_fail (NR_IS_ARENA_ITEM (item));
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nr_return_if_fail (child != NULL);
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nr_return_if_fail (NR_IS_ARENA_ITEM (child));
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nr_return_if_fail (child->parent == item);
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nr_return_if_fail (!ref || NR_IS_ARENA_ITEM (ref));
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nr_return_if_fail (!ref || (ref->parent == item));
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if (NR_ARENA_ITEM_VIRTUAL (item, set_child_position))
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NR_ARENA_ITEM_VIRTUAL (item, set_child_position) (item, child, ref);
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nr_arena_item_ref (NRArenaItem *item)
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nr_object_ref ((NRObject *) item);
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nr_arena_item_unref (NRArenaItem *item)
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nr_object_unref ((NRObject *) item);
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nr_arena_item_invoke_update (NRArenaItem *item, NRRectL *area, NRGC *gc,
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unsigned int state, unsigned int reset)
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bool filter = (item->arena->rendermode == Inkscape::RENDERMODE_NORMAL);
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nr_return_val_if_fail (item != NULL, NR_ARENA_ITEM_STATE_INVALID);
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nr_return_val_if_fail (NR_IS_ARENA_ITEM (item),
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NR_ARENA_ITEM_STATE_INVALID);
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nr_return_val_if_fail (!(state & NR_ARENA_ITEM_STATE_INVALID),
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NR_ARENA_ITEM_STATE_INVALID);
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#ifdef NR_ARENA_ITEM_DEBUG_CASCADE
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printf ("Update %s:%p %x %x %x\n",
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nr_type_name_from_instance ((GTypeInstance *) item), item, state,
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/* return if in error */
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if (item->state & NR_ARENA_ITEM_STATE_INVALID)
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/* Set reset flags according to propagation status */
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if (item->propagate) {
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reset |= ~item->state;
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item->propagate = FALSE;
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/* Reset our state */
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item->state &= ~reset;
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if (!(~item->state & state))
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/* Test whether to return immediately */
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if (area && (item->state & NR_ARENA_ITEM_STATE_BBOX)) {
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if (!nr_rect_l_test_intersect_ptr(area, &item->drawbox))
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/* Reset image cache, if not to be kept */
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if (!(item->state & NR_ARENA_ITEM_STATE_IMAGE) && (item->px)) {
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/* Set up local gc */
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if (item->transform) {
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childgc.transform = (*item->transform) * childgc.transform;
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/* Remember the transformation matrix */
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item->ctm = childgc.transform;
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/* Invoke the real method */
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// that will update bbox
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item->state = NR_ARENA_ITEM_VIRTUAL (item, update) (item, area, &childgc, state, reset);
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if (item->state & NR_ARENA_ITEM_STATE_INVALID)
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// get a copy of bbox
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memcpy(&item->drawbox, &item->bbox, sizeof(item->bbox));
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/* Enlarge the drawbox to contain filter effects */
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if (item->filter && filter) {
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item->filter->bbox_enlarge (item->drawbox);
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// fixme: to fix the display glitches, in outline mode bbox must be a combination of
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// full item bbox and its clip and mask (after we have the API to get these)
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// FIXME: since here we only need bbox, consider passing
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// ((state & !(NR_ARENA_ITEM_STATE_RENDER)) | NR_ARENA_ITEM_STATE_BBOX)
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// instead of state, so it does not have to create rendering structures in nr_arena_shape_update
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unsigned int newstate = nr_arena_item_invoke_update (item->clip, area, &childgc, state, reset);
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if (newstate & NR_ARENA_ITEM_STATE_INVALID) {
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item->state |= NR_ARENA_ITEM_STATE_INVALID;
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// for clipping, we need geometric bbox
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nr_rect_l_intersect (&item->drawbox, &item->drawbox, &item->clip->bbox);
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unsigned int newstate = nr_arena_item_invoke_update (item->mask, area, &childgc, state, reset);
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if (newstate & NR_ARENA_ITEM_STATE_INVALID) {
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item->state |= NR_ARENA_ITEM_STATE_INVALID;
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// for masking, we need full drawbox of mask
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nr_rect_l_intersect (&item->drawbox, &item->drawbox, &item->mask->drawbox);
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// now that we know drawbox, dirty the corresponding rect on canvas:
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if (!NR_IS_ARENA_GROUP(item) || (item->filter && filter)) {
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// unless filtered, groups do not need to render by themselves, only their members
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nr_arena_item_request_render (item);
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* Render item to pixblock.
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* \return Has NR_ARENA_ITEM_STATE_RENDER set on success.
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nr_arena_item_invoke_render (cairo_t *ct, NRArenaItem *item, NRRectL const *area,
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NRPixBlock *pb, unsigned int flags)
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bool outline = (item->arena->rendermode == Inkscape::RENDERMODE_OUTLINE);
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bool filter = (item->arena->rendermode == Inkscape::RENDERMODE_NORMAL);
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nr_return_val_if_fail (item != NULL, NR_ARENA_ITEM_STATE_INVALID);
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nr_return_val_if_fail (NR_IS_ARENA_ITEM (item),
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NR_ARENA_ITEM_STATE_INVALID);
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nr_return_val_if_fail (item->state & NR_ARENA_ITEM_STATE_BBOX,
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#ifdef NR_ARENA_ITEM_VERBOSE
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printf ("Invoke render %p: %d %d - %d %d\n", item, area->x0, area->y0,
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/* If we are invisible, just return successfully */
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return item->state | NR_ARENA_ITEM_STATE_RENDER;
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nr_rect_l_intersect (&carea, area, &item->drawbox);
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if (nr_rect_l_test_empty(carea))
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return item->state | NR_ARENA_ITEM_STATE_RENDER;
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if (item->filter && filter) {
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item->filter->area_enlarge (carea, item);
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nr_rect_l_intersect (&carea, &carea, &item->drawbox);
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// No caching in outline mode for now; investigate if it really gives any advantage with cairo.
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// Also no attempts to clip anything; just render everything: item, clip, mask
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// First, render the object itself
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unsigned int state = NR_ARENA_ITEM_VIRTUAL (item, render) (ct, item, &carea, pb, flags);
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if (state & NR_ARENA_ITEM_STATE_INVALID) {
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/* Clean up and return error */
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item->state |= NR_ARENA_ITEM_STATE_INVALID;
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// render clip and mask, if any
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guint32 saved_rgba = item->arena->outlinecolor; // save current outline color
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// render clippath as an object, using a different color
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Inkscape::Preferences *prefs = Inkscape::Preferences::get();
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item->arena->outlinecolor = prefs->getInt("/options/wireframecolors/clips", 0x00ff00ff); // green clips
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NR_ARENA_ITEM_VIRTUAL (item->clip, render) (ct, item->clip, &carea, pb, flags);
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// render mask as an object, using a different color
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item->arena->outlinecolor = prefs->getInt("/options/wireframecolors/masks", 0x0000ffff); // blue masks
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NR_ARENA_ITEM_VIRTUAL (item->mask, render) (ct, item->mask, &carea, pb, flags);
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item->arena->outlinecolor = saved_rgba; // restore outline color
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return item->state | NR_ARENA_ITEM_STATE_RENDER;
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/* Has cache pixblock, render this and return */
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nr_pixblock_setup_extern (&cpb, NR_PIXBLOCK_MODE_R8G8B8A8P,
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/* fixme: This probably cannot overflow, because we render only if visible */
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/* fixme: and pixel cache is there only for small items */
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/* fixme: But this still needs extra check (Lauris) */
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item->drawbox.x0, item->drawbox.y0,
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item->drawbox.x1, item->drawbox.y1,
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4 * (item->drawbox.x1 - item->drawbox.x0), FALSE,
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nr_blit_pixblock_pixblock (pb, &cpb);
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nr_pixblock_release (&cpb);
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return item->state | NR_ARENA_ITEM_STATE_RENDER;
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NRPixBlock *dpb = pb;
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/* Setup cache if we can */
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if ((!(flags & NR_ARENA_ITEM_RENDER_NO_CACHE)) &&
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(carea.x0 <= item->drawbox.x0) && (carea.y0 <= item->drawbox.y0) &&
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(carea.x1 >= item->drawbox.x1) && (carea.y1 >= item->drawbox.y1) &&
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(((item->drawbox.x1 - item->drawbox.x0) * (item->drawbox.y1 -
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item->drawbox.y0)) <= 4096)) {
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// Item drawbox is fully in renderable area and size is acceptable
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carea.x0 = item->drawbox.x0;
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carea.y0 = item->drawbox.y0;
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carea.x1 = item->drawbox.x1;
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carea.y1 = item->drawbox.y1;
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new (GC::ATOMIC) unsigned char[4 * (carea.x1 - carea.x0) *
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(carea.y1 - carea.y0)];
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nr_pixblock_setup_extern (&cpb, NR_PIXBLOCK_MODE_R8G8B8A8P, carea.x0,
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carea.y0, carea.x1, carea.y1, item->px,
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4 * (carea.x1 - carea.x0), TRUE, TRUE);
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cpb.visible_area = pb->visible_area;
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// Set nocache flag for downstream rendering
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flags |= NR_ARENA_ITEM_RENDER_NO_CACHE;
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/* Determine, whether we need temporary buffer */
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if (item->clip || item->mask
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|| ((item->opacity != 255) && !item->render_opacity)
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|| (item->filter && filter) || item->background_new
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|| (item->parent && item->parent->background_pb)) {
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/* Setup and render item buffer */
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nr_pixblock_setup_fast (&ipb, NR_PIXBLOCK_MODE_R8G8B8A8P,
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carea.x0, carea.y0, carea.x1, carea.y1,
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// if memory allocation failed, abort render
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if (ipb.size != NR_PIXBLOCK_SIZE_TINY && ipb.data.px == NULL) {
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nr_pixblock_release (&ipb);
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return (item->state);
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/* If background access is used, save the pixblock address.
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* This address is set to NULL at the end of this block */
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if (item->background_new ||
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(item->parent && item->parent->background_pb)) {
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item->background_pb = &ipb;
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ipb.visible_area = pb->visible_area;
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if (item->filter && filter) {
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item->filter->area_enlarge (ipb.visible_area, item);
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unsigned int state = NR_ARENA_ITEM_VIRTUAL (item, render) (ct, item, &carea, &ipb, flags);
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if (state & NR_ARENA_ITEM_STATE_INVALID) {
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/* Clean up and return error */
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nr_pixblock_release (&ipb);
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nr_pixblock_release (dpb);
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item->state |= NR_ARENA_ITEM_STATE_INVALID;
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/* Run filtering, if a filter is set for this object */
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if (item->filter && filter) {
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item->filter->render (item, &ipb);
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if (item->clip || item->mask) {
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/* Setup mask pixblock */
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nr_pixblock_setup_fast (&mpb, NR_PIXBLOCK_MODE_A8, carea.x0,
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carea.y0, carea.x1, carea.y1, TRUE);
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if (mpb.data.px != NULL) { // if memory allocation was successful
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mpb.visible_area = pb->visible_area;
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/* Do clip if needed */
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state = nr_arena_item_invoke_clip (item->clip, &carea, &mpb);
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if (state & NR_ARENA_ITEM_STATE_INVALID) {
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/* Clean up and return error */
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nr_pixblock_release (&mpb);
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nr_pixblock_release (&ipb);
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nr_pixblock_release (dpb);
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item->state |= NR_ARENA_ITEM_STATE_INVALID;
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/* Do mask if needed */
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/* Set up yet another temporary pixblock */
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nr_pixblock_setup_fast (&tpb, NR_PIXBLOCK_MODE_R8G8B8A8N,
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carea.x0, carea.y0, carea.x1,
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if (tpb.data.px != NULL) { // if memory allocation was successful
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tpb.visible_area = pb->visible_area;
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unsigned int state = NR_ARENA_ITEM_VIRTUAL (item->mask, render) (ct, item->mask, &carea, &tpb, flags);
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if (state & NR_ARENA_ITEM_STATE_INVALID) {
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/* Clean up and return error */
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nr_pixblock_release (&tpb);
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nr_pixblock_release (&mpb);
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nr_pixblock_release (&ipb);
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nr_pixblock_release (dpb);
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item->state |= NR_ARENA_ITEM_STATE_INVALID;
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/* Composite with clip */
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for (y = carea.y0; y < carea.y1; y++) {
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unsigned char *s, *d;
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s = NR_PIXBLOCK_PX (&tpb) + (y -
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d = NR_PIXBLOCK_PX (&mpb) + (y -
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for (x = carea.x0; x < carea.x1; x++) {
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m = NR_PREMUL_112 (s[0] + s[1] + s[2], s[3]);
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FAST_DIV_ROUND < 3 * 255 * 255 >
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(NR_PREMUL_123 (d[0], m));
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for (y = carea.y0; y < carea.y1; y++) {
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unsigned char *s, *d;
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s = NR_PIXBLOCK_PX (&tpb) + (y -
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d = NR_PIXBLOCK_PX (&mpb) + (y -
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for (x = carea.x0; x < carea.x1; x++) {
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m = NR_PREMUL_112 (s[0] + s[1] + s[2], s[3]);
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d[0] = FAST_DIV_ROUND < 3 * 255 > (m);
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nr_pixblock_release (&tpb);
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/* Multiply with opacity if needed */
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if ((item->opacity != 255) && !item->render_opacity
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for (y = carea.y0; y < carea.y1; y++) {
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d = NR_PIXBLOCK_PX (&mpb) + (y - carea.y0) * mpb.rs;
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for (x = carea.x0; x < carea.x1; x++) {
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d[0] = NR_PREMUL_111 (d[0], a);
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/* Compose rendering pixblock int destination */
560
nr_blit_pixblock_pixblock_mask (dpb, &ipb, &mpb);
562
nr_pixblock_release (&mpb);
564
if (item->render_opacity) { // opacity was already rendered in, just copy to dpb here
565
nr_blit_pixblock_pixblock(dpb, &ipb);
566
} else { // copy while multiplying by opacity
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nr_blit_pixblock_pixblock_alpha (dpb, &ipb, item->opacity);
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nr_pixblock_release (&ipb);
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/* This pointer wouldn't be valid outside this block, so clear it */
573
item->background_pb = NULL;
576
unsigned int state = NR_ARENA_ITEM_VIRTUAL (item, render) (ct, item, &carea, dpb, flags);
577
if (state & NR_ARENA_ITEM_STATE_INVALID) {
578
/* Clean up and return error */
580
nr_pixblock_release (dpb);
581
item->state |= NR_ARENA_ITEM_STATE_INVALID;
588
/* Have to blit from cache */
589
nr_blit_pixblock_pixblock (pb, dpb);
590
nr_pixblock_release (dpb);
592
item->state |= NR_ARENA_ITEM_STATE_IMAGE;
595
return item->state | NR_ARENA_ITEM_STATE_RENDER;
599
nr_arena_item_invoke_clip (NRArenaItem *item, NRRectL *area, NRPixBlock *pb)
601
nr_return_val_if_fail (item != NULL, NR_ARENA_ITEM_STATE_INVALID);
602
nr_return_val_if_fail (NR_IS_ARENA_ITEM (item),
603
NR_ARENA_ITEM_STATE_INVALID);
604
/* we originally short-circuited if the object state included
605
* NR_ARENA_ITEM_STATE_CLIP (and showed a warning on the console);
606
* anyone know why we stopped doing so?
608
nr_return_val_if_fail ((pb->area.x1 - pb->area.x0) >=
609
(area->x1 - area->x0),
610
NR_ARENA_ITEM_STATE_INVALID);
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nr_return_val_if_fail ((pb->area.y1 - pb->area.y0) >=
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(area->y1 - area->y0),
613
NR_ARENA_ITEM_STATE_INVALID);
615
#ifdef NR_ARENA_ITEM_VERBOSE
616
printf ("Invoke clip by %p: %d %d - %d %d, item bbox %d %d - %d %d\n",
617
item, area->x0, area->y0, area->x1, area->y1, (&item->bbox)->x0,
618
(&item->bbox)->y0, (&item->bbox)->x1, (&item->bbox)->y1);
621
if (item->visible && nr_rect_l_test_intersect_ptr(area, &item->bbox)) {
622
/* Need render that item */
623
if (((NRArenaItemClass *) NR_OBJECT_GET_CLASS (item))->clip) {
624
return ((NRArenaItemClass *) NR_OBJECT_GET_CLASS (item))->
625
clip (item, area, pb);
633
nr_arena_item_invoke_pick (NRArenaItem *item, Geom::Point p, double delta,
636
nr_return_val_if_fail (item != NULL, NULL);
637
nr_return_val_if_fail (NR_IS_ARENA_ITEM (item), NULL);
639
// Sometimes there's no BBOX in item->state, reason unknown (bug 992817); I made this not an assert to remove the warning
640
if (!(item->state & NR_ARENA_ITEM_STATE_BBOX)
641
|| !(item->state & NR_ARENA_ITEM_STATE_PICK))
644
if (!sticky && !(item->visible && item->sensitive))
647
// TODO: rewrite using Geom::Rect
648
const double x = p[Geom::X];
649
const double y = p[Geom::Y];
651
if (((x + delta) >= item->bbox.x0) &&
652
((x - delta) < item->bbox.x1) &&
653
((y + delta) >= item->bbox.y0) && ((y - delta) < item->bbox.y1)) {
654
if (((NRArenaItemClass *) NR_OBJECT_GET_CLASS (item))->pick)
655
return ((NRArenaItemClass *) NR_OBJECT_GET_CLASS (item))->
656
pick (item, p, delta, sticky);
663
nr_arena_item_request_update (NRArenaItem *item, unsigned int reset,
664
unsigned int propagate)
666
nr_return_if_fail (item != NULL);
667
nr_return_if_fail (NR_IS_ARENA_ITEM (item));
668
nr_return_if_fail (!(reset & NR_ARENA_ITEM_STATE_INVALID));
670
if (propagate && !item->propagate)
671
item->propagate = TRUE;
673
if (item->state & reset) {
674
item->state &= ~reset;
676
nr_arena_item_request_update (item->parent, reset, FALSE);
678
nr_arena_request_update (item->arena, item);
684
nr_arena_item_request_render (NRArenaItem *item)
686
nr_return_if_fail (item != NULL);
687
nr_return_if_fail (NR_IS_ARENA_ITEM (item));
689
nr_arena_request_render_rect (item->arena, &item->drawbox);
695
nr_arena_item_unparent (NRArenaItem *item)
697
nr_return_val_if_fail (item != NULL, NULL);
698
nr_return_val_if_fail (NR_IS_ARENA_ITEM (item), NULL);
700
nr_arena_item_request_render (item);
703
nr_arena_item_remove_child (item->parent, item);
710
nr_arena_item_append_child (NRArenaItem *parent, NRArenaItem *child)
712
nr_return_if_fail (parent != NULL);
713
nr_return_if_fail (NR_IS_ARENA_ITEM (parent));
714
nr_return_if_fail (child != NULL);
715
nr_return_if_fail (NR_IS_ARENA_ITEM (child));
716
nr_return_if_fail (parent->arena == child->arena);
717
nr_return_if_fail (child->parent == NULL);
718
nr_return_if_fail (child->prev == NULL);
719
nr_return_if_fail (child->next == NULL);
721
nr_arena_item_add_child (parent, child, nr_arena_item_last_child (parent));
725
nr_arena_item_set_transform (NRArenaItem *item, Geom::Matrix const &transform)
727
Geom::Matrix const t (transform);
728
nr_arena_item_set_transform (item, &t);
732
nr_arena_item_set_transform (NRArenaItem *item, Geom::Matrix const *transform)
734
nr_return_if_fail (item != NULL);
735
nr_return_if_fail (NR_IS_ARENA_ITEM (item));
737
if (!transform && !item->transform)
740
const Geom::Matrix *md = (item->transform) ? item->transform : &GEOM_MATRIX_IDENTITY;
741
const Geom::Matrix *ms = (transform) ? transform : &GEOM_MATRIX_IDENTITY;
743
if (!Geom::matrix_equalp(*md, *ms, NR_EPSILON)) {
744
nr_arena_item_request_render (item);
745
if (!transform || transform->isIdentity()) {
746
/* Set to identity affine */
747
item->transform = NULL;
749
if (!item->transform)
750
item->transform = new (GC::ATOMIC) Geom::Matrix ();
751
*item->transform = *transform;
753
nr_arena_item_request_update (item, NR_ARENA_ITEM_STATE_ALL, TRUE);
758
nr_arena_item_set_opacity (NRArenaItem *item, double opacity)
760
nr_return_if_fail (item != NULL);
761
nr_return_if_fail (NR_IS_ARENA_ITEM (item));
763
nr_arena_item_request_render (item);
765
item->opacity = (unsigned int) (opacity * 255.9999);
769
nr_arena_item_set_sensitive (NRArenaItem *item, unsigned int sensitive)
771
nr_return_if_fail (item != NULL);
772
nr_return_if_fail (NR_IS_ARENA_ITEM (item));
774
/* fixme: mess with pick/repick... */
776
item->sensitive = sensitive;
780
nr_arena_item_set_visible (NRArenaItem *item, unsigned int visible)
782
nr_return_if_fail (item != NULL);
783
nr_return_if_fail (NR_IS_ARENA_ITEM (item));
785
item->visible = visible;
787
nr_arena_item_request_render (item);
791
nr_arena_item_set_clip (NRArenaItem *item, NRArenaItem *clip)
793
nr_return_if_fail (item != NULL);
794
nr_return_if_fail (NR_IS_ARENA_ITEM (item));
795
nr_return_if_fail (!clip || NR_IS_ARENA_ITEM (clip));
797
if (clip != item->clip) {
798
nr_arena_item_request_render (item);
800
item->clip = nr_arena_item_detach (item, item->clip);
802
item->clip = nr_arena_item_attach (item, clip, NULL, NULL);
803
nr_arena_item_request_update (item, NR_ARENA_ITEM_STATE_ALL, TRUE);
808
nr_arena_item_set_mask (NRArenaItem *item, NRArenaItem *mask)
810
nr_return_if_fail (item != NULL);
811
nr_return_if_fail (NR_IS_ARENA_ITEM (item));
812
nr_return_if_fail (!mask || NR_IS_ARENA_ITEM (mask));
814
if (mask != item->mask) {
815
nr_arena_item_request_render (item);
817
item->mask = nr_arena_item_detach (item, item->mask);
819
item->mask = nr_arena_item_attach (item, mask, NULL, NULL);
820
nr_arena_item_request_update (item, NR_ARENA_ITEM_STATE_ALL, TRUE);
825
nr_arena_item_set_order (NRArenaItem *item, int order)
827
nr_return_if_fail (item != NULL);
828
nr_return_if_fail (NR_IS_ARENA_ITEM (item));
833
NRArenaItem *children = nr_arena_item_children (item->parent);
835
NRArenaItem *ref = NULL;
837
for (NRArenaItem *child = children; child != NULL; child = child->next) {
846
nr_arena_item_set_child_position (item->parent, item, ref);
850
nr_arena_item_set_item_bbox (NRArenaItem *item, Geom::OptRect &bbox)
852
nr_return_if_fail(item != NULL);
853
nr_return_if_fail(NR_IS_ARENA_ITEM(item));
855
item->item_bbox = bbox;
858
/** Returns a background image for use with filter effects. */
860
nr_arena_item_get_background (NRArenaItem const *item, int depth)
863
if (!item->background_pb)
865
if (item->background_new) {
866
pb = new NRPixBlock ();
867
nr_pixblock_setup_fast (pb, item->background_pb->mode,
868
item->background_pb->area.x0,
869
item->background_pb->area.y0,
870
item->background_pb->area.x1,
871
item->background_pb->area.y1, true);
872
if (pb->size != NR_PIXBLOCK_SIZE_TINY && pb->data.px == NULL) // allocation failed
874
} else if (item->parent) {
875
pb = nr_arena_item_get_background (item->parent, depth + 1);
880
nr_blit_pixblock_pixblock (pb, item->background_pb);
888
nr_arena_item_attach (NRArenaItem *parent, NRArenaItem *child,
889
NRArenaItem *prev, NRArenaItem *next)
891
nr_return_val_if_fail (parent != NULL, NULL);
892
nr_return_val_if_fail (NR_IS_ARENA_ITEM (parent), NULL);
893
nr_return_val_if_fail (child != NULL, NULL);
894
nr_return_val_if_fail (NR_IS_ARENA_ITEM (child), NULL);
895
nr_return_val_if_fail (child->parent == NULL, NULL);
896
nr_return_val_if_fail (child->prev == NULL, NULL);
897
nr_return_val_if_fail (child->next == NULL, NULL);
898
nr_return_val_if_fail (!prev || NR_IS_ARENA_ITEM (prev), NULL);
899
nr_return_val_if_fail (!prev || (prev->parent == parent), NULL);
900
nr_return_val_if_fail (!prev || (prev->next == next), NULL);
901
nr_return_val_if_fail (!next || NR_IS_ARENA_ITEM (next), NULL);
902
nr_return_val_if_fail (!next || (next->parent == parent), NULL);
903
nr_return_val_if_fail (!next || (next->prev == prev), NULL);
905
child->parent = parent;
918
nr_arena_item_detach (NRArenaItem *parent, NRArenaItem *child)
920
nr_return_val_if_fail (parent != NULL, NULL);
921
nr_return_val_if_fail (NR_IS_ARENA_ITEM (parent), NULL);
922
nr_return_val_if_fail (child != NULL, NULL);
923
nr_return_val_if_fail (NR_IS_ARENA_ITEM (child), NULL);
924
nr_return_val_if_fail (child->parent == parent, NULL);
926
NRArenaItem *prev = child->prev;
927
NRArenaItem *next = child->next;
929
child->parent = NULL;
944
c-file-style:"stroustrup"
945
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
950
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :