#define __NR_ARENA_ITEM_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 */ #define noNR_ARENA_ITEM_VERBOSE #define noNR_ARENA_ITEM_DEBUG_CASCADE #include <cstring> #include <string> #include <libnr/nr-blit.h> #include <libnr/nr-pixops.h> #include "nr-arena.h" #include "nr-arena-item.h" #include "gc-core.h" #include "helper/geom.h" #include "nr-filter.h" #include "nr-arena-group.h" #include "preferences.h" namespace GC = Inkscape::GC; static void nr_arena_item_class_init (NRArenaItemClass *klass); static void nr_arena_item_init (NRArenaItem *item); static void nr_arena_item_private_finalize (NRObject *object); static NRObjectClass *parent_class; NRType nr_arena_item_get_type (void) { static NRType type = 0; if (!type) { type = nr_object_register_type (NR_TYPE_OBJECT, "NRArenaItem", sizeof (NRArenaItemClass), sizeof (NRArenaItem), (void (*)(NRObjectClass *)) nr_arena_item_class_init, (void (*)(NRObject *)) nr_arena_item_init); } return type; } static void nr_arena_item_class_init (NRArenaItemClass *klass) { NRObjectClass *object_class; object_class = (NRObjectClass *) klass; parent_class = ((NRObjectClass *) klass)->parent; object_class->finalize = nr_arena_item_private_finalize; object_class->cpp_ctor = NRObject::invoke_ctor < NRArenaItem >; } static void nr_arena_item_init (NRArenaItem *item) { item->arena = NULL; item->parent = NULL; item->next = item->prev = NULL; item->key = 0; item->state = 0; item->sensitive = TRUE; item->visible = TRUE; memset (&item->bbox, 0, sizeof (item->bbox)); memset (&item->drawbox, 0, sizeof (item->drawbox)); item->transform = NULL; item->opacity = 255; item->render_opacity = FALSE; item->transform = NULL; item->clip = NULL; item->mask = NULL; item->px = NULL; item->data = NULL; item->filter = NULL; item->background_pb = NULL; item->background_new = false; } static void nr_arena_item_private_finalize (NRObject *object) { NRArenaItem *item = static_cast < NRArenaItem * >(object); item->px = NULL; item->transform = NULL; ((NRObjectClass *) (parent_class))->finalize (object); } NRArenaItem * nr_arena_item_children (NRArenaItem *item) { nr_return_val_if_fail (item != NULL, NULL); nr_return_val_if_fail (NR_IS_ARENA_ITEM (item), NULL); if (NR_ARENA_ITEM_VIRTUAL (item, children)) return NR_ARENA_ITEM_VIRTUAL (item, children) (item); return NULL; } NRArenaItem * nr_arena_item_last_child (NRArenaItem *item) { nr_return_val_if_fail (item != NULL, NULL); nr_return_val_if_fail (NR_IS_ARENA_ITEM (item), NULL); if (NR_ARENA_ITEM_VIRTUAL (item, last_child)) { return NR_ARENA_ITEM_VIRTUAL (item, last_child) (item); } else { NRArenaItem *ref = nr_arena_item_children (item); if (ref) while (ref->next) ref = ref->next; return ref; } } void nr_arena_item_add_child (NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref) { nr_return_if_fail (item != NULL); nr_return_if_fail (NR_IS_ARENA_ITEM (item)); nr_return_if_fail (child != NULL); nr_return_if_fail (NR_IS_ARENA_ITEM (child)); nr_return_if_fail (child->parent == NULL); nr_return_if_fail (child->prev == NULL); nr_return_if_fail (child->next == NULL); nr_return_if_fail (child->arena == item->arena); nr_return_if_fail (child != ref); nr_return_if_fail (!ref || NR_IS_ARENA_ITEM (ref)); nr_return_if_fail (!ref || (ref->parent == item)); if (NR_ARENA_ITEM_VIRTUAL (item, add_child)) NR_ARENA_ITEM_VIRTUAL (item, add_child) (item, child, ref); } void nr_arena_item_remove_child (NRArenaItem *item, NRArenaItem *child) { nr_return_if_fail (item != NULL); nr_return_if_fail (NR_IS_ARENA_ITEM (item)); nr_return_if_fail (child != NULL); nr_return_if_fail (NR_IS_ARENA_ITEM (child)); nr_return_if_fail (child->parent == item); if (NR_ARENA_ITEM_VIRTUAL (item, remove_child)) NR_ARENA_ITEM_VIRTUAL (item, remove_child) (item, child); } void nr_arena_item_set_child_position (NRArenaItem *item, NRArenaItem *child, NRArenaItem *ref) { nr_return_if_fail (item != NULL); nr_return_if_fail (NR_IS_ARENA_ITEM (item)); nr_return_if_fail (child != NULL); nr_return_if_fail (NR_IS_ARENA_ITEM (child)); nr_return_if_fail (child->parent == item); nr_return_if_fail (!ref || NR_IS_ARENA_ITEM (ref)); nr_return_if_fail (!ref || (ref->parent == item)); if (NR_ARENA_ITEM_VIRTUAL (item, set_child_position)) NR_ARENA_ITEM_VIRTUAL (item, set_child_position) (item, child, ref); } NRArenaItem * nr_arena_item_ref (NRArenaItem *item) { nr_object_ref ((NRObject *) item); return item; } NRArenaItem * nr_arena_item_unref (NRArenaItem *item) { nr_object_unref ((NRObject *) item); return NULL; } unsigned int nr_arena_item_invoke_update (NRArenaItem *item, NRRectL *area, NRGC *gc, unsigned int state, unsigned int reset) { NRGC childgc (gc); bool filter = (item->arena->rendermode == Inkscape::RENDERMODE_NORMAL); nr_return_val_if_fail (item != NULL, NR_ARENA_ITEM_STATE_INVALID); nr_return_val_if_fail (NR_IS_ARENA_ITEM (item), NR_ARENA_ITEM_STATE_INVALID); nr_return_val_if_fail (!(state & NR_ARENA_ITEM_STATE_INVALID), NR_ARENA_ITEM_STATE_INVALID); #ifdef NR_ARENA_ITEM_DEBUG_CASCADE printf ("Update %s:%p %x %x %x\n", nr_type_name_from_instance ((GTypeInstance *) item), item, state, item->state, reset); #endif /* return if in error */ if (item->state & NR_ARENA_ITEM_STATE_INVALID) return item->state; /* Set reset flags according to propagation status */ if (item->propagate) { reset |= ~item->state; item->propagate = FALSE; } /* Reset our state */ item->state &= ~reset; /* Return if NOP */ if (!(~item->state & state)) return item->state; /* Test whether to return immediately */ if (area && (item->state & NR_ARENA_ITEM_STATE_BBOX)) { if (!nr_rect_l_test_intersect_ptr(area, &item->drawbox)) return item->state; } /* Reset image cache, if not to be kept */ if (!(item->state & NR_ARENA_ITEM_STATE_IMAGE) && (item->px)) { item->px = NULL; } /* Set up local gc */ childgc = *gc; if (item->transform) { childgc.transform = (*item->transform) * childgc.transform; } /* Remember the transformation matrix */ item->ctm = childgc.transform; /* Invoke the real method */ // that will update bbox item->state = NR_ARENA_ITEM_VIRTUAL (item, update) (item, area, &childgc, state, reset); if (item->state & NR_ARENA_ITEM_STATE_INVALID) return item->state; // get a copy of bbox memcpy(&item->drawbox, &item->bbox, sizeof(item->bbox)); /* Enlarge the drawbox to contain filter effects */ if (item->filter && filter) { item->filter->bbox_enlarge (item->drawbox); } // fixme: to fix the display glitches, in outline mode bbox must be a combination of // full item bbox and its clip and mask (after we have the API to get these) /* Clipping */ if (item->clip) { // FIXME: since here we only need bbox, consider passing // ((state & !(NR_ARENA_ITEM_STATE_RENDER)) | NR_ARENA_ITEM_STATE_BBOX) // instead of state, so it does not have to create rendering structures in nr_arena_shape_update unsigned int newstate = nr_arena_item_invoke_update (item->clip, area, &childgc, state, reset); if (newstate & NR_ARENA_ITEM_STATE_INVALID) { item->state |= NR_ARENA_ITEM_STATE_INVALID; return item->state; } // for clipping, we need geometric bbox nr_rect_l_intersect (&item->drawbox, &item->drawbox, &item->clip->bbox); } /* Masking */ if (item->mask) { unsigned int newstate = nr_arena_item_invoke_update (item->mask, area, &childgc, state, reset); if (newstate & NR_ARENA_ITEM_STATE_INVALID) { item->state |= NR_ARENA_ITEM_STATE_INVALID; return item->state; } // for masking, we need full drawbox of mask nr_rect_l_intersect (&item->drawbox, &item->drawbox, &item->mask->drawbox); } // now that we know drawbox, dirty the corresponding rect on canvas: if (!NR_IS_ARENA_GROUP(item) || (item->filter && filter)) { // unless filtered, groups do not need to render by themselves, only their members nr_arena_item_request_render (item); } return item->state; } /** * Render item to pixblock. * * \return Has NR_ARENA_ITEM_STATE_RENDER set on success. */ unsigned int nr_arena_item_invoke_render (cairo_t *ct, NRArenaItem *item, NRRectL const *area, NRPixBlock *pb, unsigned int flags) { bool outline = (item->arena->rendermode == Inkscape::RENDERMODE_OUTLINE); bool filter = (item->arena->rendermode == Inkscape::RENDERMODE_NORMAL); nr_return_val_if_fail (item != NULL, NR_ARENA_ITEM_STATE_INVALID); nr_return_val_if_fail (NR_IS_ARENA_ITEM (item), NR_ARENA_ITEM_STATE_INVALID); nr_return_val_if_fail (item->state & NR_ARENA_ITEM_STATE_BBOX, item->state); #ifdef NR_ARENA_ITEM_VERBOSE printf ("Invoke render %p: %d %d - %d %d\n", item, area->x0, area->y0, area->x1, area->y1); #endif /* If we are invisible, just return successfully */ if (!item->visible) return item->state | NR_ARENA_ITEM_STATE_RENDER; NRRectL carea; nr_rect_l_intersect (&carea, area, &item->drawbox); if (nr_rect_l_test_empty(carea)) return item->state | NR_ARENA_ITEM_STATE_RENDER; if (item->filter && filter) { item->filter->area_enlarge (carea, item); nr_rect_l_intersect (&carea, &carea, &item->drawbox); } if (outline) { // No caching in outline mode for now; investigate if it really gives any advantage with cairo. // Also no attempts to clip anything; just render everything: item, clip, mask // First, render the object itself unsigned int state = NR_ARENA_ITEM_VIRTUAL (item, render) (ct, item, &carea, pb, flags); if (state & NR_ARENA_ITEM_STATE_INVALID) { /* Clean up and return error */ item->state |= NR_ARENA_ITEM_STATE_INVALID; return item->state; } // render clip and mask, if any guint32 saved_rgba = item->arena->outlinecolor; // save current outline color // render clippath as an object, using a different color Inkscape::Preferences *prefs = Inkscape::Preferences::get(); if (item->clip) { item->arena->outlinecolor = prefs->getInt("/options/wireframecolors/clips", 0x00ff00ff); // green clips NR_ARENA_ITEM_VIRTUAL (item->clip, render) (ct, item->clip, &carea, pb, flags); } // render mask as an object, using a different color if (item->mask) { item->arena->outlinecolor = prefs->getInt("/options/wireframecolors/masks", 0x0000ffff); // blue masks NR_ARENA_ITEM_VIRTUAL (item->mask, render) (ct, item->mask, &carea, pb, flags); } item->arena->outlinecolor = saved_rgba; // restore outline color return item->state | NR_ARENA_ITEM_STATE_RENDER; } NRPixBlock cpb; if (item->px) { /* Has cache pixblock, render this and return */ nr_pixblock_setup_extern (&cpb, NR_PIXBLOCK_MODE_R8G8B8A8P, /* fixme: This probably cannot overflow, because we render only if visible */ /* fixme: and pixel cache is there only for small items */ /* fixme: But this still needs extra check (Lauris) */ item->drawbox.x0, item->drawbox.y0, item->drawbox.x1, item->drawbox.y1, item->px, 4 * (item->drawbox.x1 - item->drawbox.x0), FALSE, FALSE); nr_blit_pixblock_pixblock (pb, &cpb); nr_pixblock_release (&cpb); pb->empty = FALSE; return item->state | NR_ARENA_ITEM_STATE_RENDER; } NRPixBlock *dpb = pb; /* Setup cache if we can */ if ((!(flags & NR_ARENA_ITEM_RENDER_NO_CACHE)) && (carea.x0 <= item->drawbox.x0) && (carea.y0 <= item->drawbox.y0) && (carea.x1 >= item->drawbox.x1) && (carea.y1 >= item->drawbox.y1) && (((item->drawbox.x1 - item->drawbox.x0) * (item->drawbox.y1 - item->drawbox.y0)) <= 4096)) { // Item drawbox is fully in renderable area and size is acceptable carea.x0 = item->drawbox.x0; carea.y0 = item->drawbox.y0; carea.x1 = item->drawbox.x1; carea.y1 = item->drawbox.y1; item->px = new (GC::ATOMIC) unsigned char[4 * (carea.x1 - carea.x0) * (carea.y1 - carea.y0)]; nr_pixblock_setup_extern (&cpb, NR_PIXBLOCK_MODE_R8G8B8A8P, carea.x0, carea.y0, carea.x1, carea.y1, item->px, 4 * (carea.x1 - carea.x0), TRUE, TRUE); cpb.visible_area = pb->visible_area; dpb = &cpb; // Set nocache flag for downstream rendering flags |= NR_ARENA_ITEM_RENDER_NO_CACHE; } /* Determine, whether we need temporary buffer */ if (item->clip || item->mask || ((item->opacity != 255) && !item->render_opacity) || (item->filter && filter) || item->background_new || (item->parent && item->parent->background_pb)) { /* Setup and render item buffer */ NRPixBlock ipb; nr_pixblock_setup_fast (&ipb, NR_PIXBLOCK_MODE_R8G8B8A8P, carea.x0, carea.y0, carea.x1, carea.y1, TRUE); // if memory allocation failed, abort render if (ipb.size != NR_PIXBLOCK_SIZE_TINY && ipb.data.px == NULL) { nr_pixblock_release (&ipb); return (item->state); } /* If background access is used, save the pixblock address. * This address is set to NULL at the end of this block */ if (item->background_new || (item->parent && item->parent->background_pb)) { item->background_pb = &ipb; } ipb.visible_area = pb->visible_area; if (item->filter && filter) { item->filter->area_enlarge (ipb.visible_area, item); } unsigned int state = NR_ARENA_ITEM_VIRTUAL (item, render) (ct, item, &carea, &ipb, flags); if (state & NR_ARENA_ITEM_STATE_INVALID) { /* Clean up and return error */ nr_pixblock_release (&ipb); if (dpb != pb) nr_pixblock_release (dpb); item->state |= NR_ARENA_ITEM_STATE_INVALID; return item->state; } ipb.empty = FALSE; /* Run filtering, if a filter is set for this object */ if (item->filter && filter) { item->filter->render (item, &ipb); } if (item->clip || item->mask) { /* Setup mask pixblock */ NRPixBlock mpb; nr_pixblock_setup_fast (&mpb, NR_PIXBLOCK_MODE_A8, carea.x0, carea.y0, carea.x1, carea.y1, TRUE); if (mpb.data.px != NULL) { // if memory allocation was successful mpb.visible_area = pb->visible_area; /* Do clip if needed */ if (item->clip) { state = nr_arena_item_invoke_clip (item->clip, &carea, &mpb); if (state & NR_ARENA_ITEM_STATE_INVALID) { /* Clean up and return error */ nr_pixblock_release (&mpb); nr_pixblock_release (&ipb); if (dpb != pb) nr_pixblock_release (dpb); item->state |= NR_ARENA_ITEM_STATE_INVALID; return item->state; } mpb.empty = FALSE; } /* Do mask if needed */ if (item->mask) { NRPixBlock tpb; /* Set up yet another temporary pixblock */ nr_pixblock_setup_fast (&tpb, NR_PIXBLOCK_MODE_R8G8B8A8N, carea.x0, carea.y0, carea.x1, carea.y1, TRUE); if (tpb.data.px != NULL) { // if memory allocation was successful tpb.visible_area = pb->visible_area; unsigned int state = NR_ARENA_ITEM_VIRTUAL (item->mask, render) (ct, item->mask, &carea, &tpb, flags); if (state & NR_ARENA_ITEM_STATE_INVALID) { /* Clean up and return error */ nr_pixblock_release (&tpb); nr_pixblock_release (&mpb); nr_pixblock_release (&ipb); if (dpb != pb) nr_pixblock_release (dpb); item->state |= NR_ARENA_ITEM_STATE_INVALID; return item->state; } /* Composite with clip */ if (item->clip) { int x, y; for (y = carea.y0; y < carea.y1; y++) { unsigned char *s, *d; s = NR_PIXBLOCK_PX (&tpb) + (y - carea.y0) * tpb.rs; d = NR_PIXBLOCK_PX (&mpb) + (y - carea.y0) * mpb.rs; for (x = carea.x0; x < carea.x1; x++) { unsigned int m; m = NR_PREMUL_112 (s[0] + s[1] + s[2], s[3]); d[0] = FAST_DIV_ROUND < 3 * 255 * 255 > (NR_PREMUL_123 (d[0], m)); s += 4; d += 1; } } } else { int x, y; for (y = carea.y0; y < carea.y1; y++) { unsigned char *s, *d; s = NR_PIXBLOCK_PX (&tpb) + (y - carea.y0) * tpb.rs; d = NR_PIXBLOCK_PX (&mpb) + (y - carea.y0) * mpb.rs; for (x = carea.x0; x < carea.x1; x++) { unsigned int m; m = NR_PREMUL_112 (s[0] + s[1] + s[2], s[3]); d[0] = FAST_DIV_ROUND < 3 * 255 > (m); s += 4; d += 1; } } mpb.empty = FALSE; } } nr_pixblock_release (&tpb); } /* Multiply with opacity if needed */ if ((item->opacity != 255) && !item->render_opacity ) { int x, y; unsigned int a; a = item->opacity; for (y = carea.y0; y < carea.y1; y++) { unsigned char *d; d = NR_PIXBLOCK_PX (&mpb) + (y - carea.y0) * mpb.rs; for (x = carea.x0; x < carea.x1; x++) { d[0] = NR_PREMUL_111 (d[0], a); d += 1; } } } /* Compose rendering pixblock int destination */ nr_blit_pixblock_pixblock_mask (dpb, &ipb, &mpb); } nr_pixblock_release (&mpb); } else { if (item->render_opacity) { // opacity was already rendered in, just copy to dpb here nr_blit_pixblock_pixblock(dpb, &ipb); } else { // copy while multiplying by opacity nr_blit_pixblock_pixblock_alpha (dpb, &ipb, item->opacity); } } nr_pixblock_release (&ipb); dpb->empty = FALSE; /* This pointer wouldn't be valid outside this block, so clear it */ item->background_pb = NULL; } else { /* Just render */ unsigned int state = NR_ARENA_ITEM_VIRTUAL (item, render) (ct, item, &carea, dpb, flags); if (state & NR_ARENA_ITEM_STATE_INVALID) { /* Clean up and return error */ if (dpb != pb) nr_pixblock_release (dpb); item->state |= NR_ARENA_ITEM_STATE_INVALID; return item->state; } dpb->empty = FALSE; } if (dpb != pb) { /* Have to blit from cache */ nr_blit_pixblock_pixblock (pb, dpb); nr_pixblock_release (dpb); pb->empty = FALSE; item->state |= NR_ARENA_ITEM_STATE_IMAGE; } return item->state | NR_ARENA_ITEM_STATE_RENDER; } unsigned int nr_arena_item_invoke_clip (NRArenaItem *item, NRRectL *area, NRPixBlock *pb) { nr_return_val_if_fail (item != NULL, NR_ARENA_ITEM_STATE_INVALID); nr_return_val_if_fail (NR_IS_ARENA_ITEM (item), NR_ARENA_ITEM_STATE_INVALID); /* we originally short-circuited if the object state included * NR_ARENA_ITEM_STATE_CLIP (and showed a warning on the console); * anyone know why we stopped doing so? */ nr_return_val_if_fail ((pb->area.x1 - pb->area.x0) >= (area->x1 - area->x0), NR_ARENA_ITEM_STATE_INVALID); nr_return_val_if_fail ((pb->area.y1 - pb->area.y0) >= (area->y1 - area->y0), NR_ARENA_ITEM_STATE_INVALID); #ifdef NR_ARENA_ITEM_VERBOSE printf ("Invoke clip by %p: %d %d - %d %d, item bbox %d %d - %d %d\n", item, area->x0, area->y0, area->x1, area->y1, (&item->bbox)->x0, (&item->bbox)->y0, (&item->bbox)->x1, (&item->bbox)->y1); #endif if (item->visible && nr_rect_l_test_intersect_ptr(area, &item->bbox)) { /* Need render that item */ if (((NRArenaItemClass *) NR_OBJECT_GET_CLASS (item))->clip) { return ((NRArenaItemClass *) NR_OBJECT_GET_CLASS (item))-> clip (item, area, pb); } } return item->state; } NRArenaItem * nr_arena_item_invoke_pick (NRArenaItem *item, Geom::Point p, double delta, unsigned int sticky) { nr_return_val_if_fail (item != NULL, NULL); nr_return_val_if_fail (NR_IS_ARENA_ITEM (item), NULL); // Sometimes there's no BBOX in item->state, reason unknown (bug 992817); I made this not an assert to remove the warning if (!(item->state & NR_ARENA_ITEM_STATE_BBOX) || !(item->state & NR_ARENA_ITEM_STATE_PICK)) return NULL; if (!sticky && !(item->visible && item->sensitive)) return NULL; // TODO: rewrite using Geom::Rect const double x = p[Geom::X]; const double y = p[Geom::Y]; if (((x + delta) >= item->bbox.x0) && ((x - delta) < item->bbox.x1) && ((y + delta) >= item->bbox.y0) && ((y - delta) < item->bbox.y1)) { if (((NRArenaItemClass *) NR_OBJECT_GET_CLASS (item))->pick) return ((NRArenaItemClass *) NR_OBJECT_GET_CLASS (item))-> pick (item, p, delta, sticky); } return NULL; } void nr_arena_item_request_update (NRArenaItem *item, unsigned int reset, unsigned int propagate) { nr_return_if_fail (item != NULL); nr_return_if_fail (NR_IS_ARENA_ITEM (item)); nr_return_if_fail (!(reset & NR_ARENA_ITEM_STATE_INVALID)); if (propagate && !item->propagate) item->propagate = TRUE; if (item->state & reset) { item->state &= ~reset; if (item->parent) { nr_arena_item_request_update (item->parent, reset, FALSE); } else { nr_arena_request_update (item->arena, item); } } } void nr_arena_item_request_render (NRArenaItem *item) { nr_return_if_fail (item != NULL); nr_return_if_fail (NR_IS_ARENA_ITEM (item)); nr_arena_request_render_rect (item->arena, &item->drawbox); } /* Public */ NRArenaItem * nr_arena_item_unparent (NRArenaItem *item) { nr_return_val_if_fail (item != NULL, NULL); nr_return_val_if_fail (NR_IS_ARENA_ITEM (item), NULL); nr_arena_item_request_render (item); if (item->parent) { nr_arena_item_remove_child (item->parent, item); } return NULL; } void nr_arena_item_append_child (NRArenaItem *parent, NRArenaItem *child) { nr_return_if_fail (parent != NULL); nr_return_if_fail (NR_IS_ARENA_ITEM (parent)); nr_return_if_fail (child != NULL); nr_return_if_fail (NR_IS_ARENA_ITEM (child)); nr_return_if_fail (parent->arena == child->arena); nr_return_if_fail (child->parent == NULL); nr_return_if_fail (child->prev == NULL); nr_return_if_fail (child->next == NULL); nr_arena_item_add_child (parent, child, nr_arena_item_last_child (parent)); } void nr_arena_item_set_transform (NRArenaItem *item, Geom::Matrix const &transform) { Geom::Matrix const t (transform); nr_arena_item_set_transform (item, &t); } void nr_arena_item_set_transform (NRArenaItem *item, Geom::Matrix const *transform) { nr_return_if_fail (item != NULL); nr_return_if_fail (NR_IS_ARENA_ITEM (item)); if (!transform && !item->transform) return; const Geom::Matrix *md = (item->transform) ? item->transform : &GEOM_MATRIX_IDENTITY; const Geom::Matrix *ms = (transform) ? transform : &GEOM_MATRIX_IDENTITY; if (!Geom::matrix_equalp(*md, *ms, NR_EPSILON)) { nr_arena_item_request_render (item); if (!transform || transform->isIdentity()) { /* Set to identity affine */ item->transform = NULL; } else { if (!item->transform) item->transform = new (GC::ATOMIC) Geom::Matrix (); *item->transform = *transform; } nr_arena_item_request_update (item, NR_ARENA_ITEM_STATE_ALL, TRUE); } } void nr_arena_item_set_opacity (NRArenaItem *item, double opacity) { nr_return_if_fail (item != NULL); nr_return_if_fail (NR_IS_ARENA_ITEM (item)); nr_arena_item_request_render (item); item->opacity = (unsigned int) (opacity * 255.9999); } void nr_arena_item_set_sensitive (NRArenaItem *item, unsigned int sensitive) { nr_return_if_fail (item != NULL); nr_return_if_fail (NR_IS_ARENA_ITEM (item)); /* fixme: mess with pick/repick... */ item->sensitive = sensitive; } void nr_arena_item_set_visible (NRArenaItem *item, unsigned int visible) { nr_return_if_fail (item != NULL); nr_return_if_fail (NR_IS_ARENA_ITEM (item)); item->visible = visible; nr_arena_item_request_render (item); } void nr_arena_item_set_clip (NRArenaItem *item, NRArenaItem *clip) { nr_return_if_fail (item != NULL); nr_return_if_fail (NR_IS_ARENA_ITEM (item)); nr_return_if_fail (!clip || NR_IS_ARENA_ITEM (clip)); if (clip != item->clip) { nr_arena_item_request_render (item); if (item->clip) item->clip = nr_arena_item_detach (item, item->clip); if (clip) item->clip = nr_arena_item_attach (item, clip, NULL, NULL); nr_arena_item_request_update (item, NR_ARENA_ITEM_STATE_ALL, TRUE); } } void nr_arena_item_set_mask (NRArenaItem *item, NRArenaItem *mask) { nr_return_if_fail (item != NULL); nr_return_if_fail (NR_IS_ARENA_ITEM (item)); nr_return_if_fail (!mask || NR_IS_ARENA_ITEM (mask)); if (mask != item->mask) { nr_arena_item_request_render (item); if (item->mask) item->mask = nr_arena_item_detach (item, item->mask); if (mask) item->mask = nr_arena_item_attach (item, mask, NULL, NULL); nr_arena_item_request_update (item, NR_ARENA_ITEM_STATE_ALL, TRUE); } } void nr_arena_item_set_order (NRArenaItem *item, int order) { nr_return_if_fail (item != NULL); nr_return_if_fail (NR_IS_ARENA_ITEM (item)); if (!item->parent) return; NRArenaItem *children = nr_arena_item_children (item->parent); NRArenaItem *ref = NULL; int pos = 0; for (NRArenaItem *child = children; child != NULL; child = child->next) { if (pos >= order) break; if (child != item) { ref = child; pos += 1; } } nr_arena_item_set_child_position (item->parent, item, ref); } void nr_arena_item_set_item_bbox (NRArenaItem *item, Geom::OptRect &bbox) { nr_return_if_fail(item != NULL); nr_return_if_fail(NR_IS_ARENA_ITEM(item)); item->item_bbox = bbox; } /** Returns a background image for use with filter effects. */ NRPixBlock * nr_arena_item_get_background (NRArenaItem const *item, int depth) { NRPixBlock *pb; if (!item->background_pb) return NULL; if (item->background_new) { pb = new NRPixBlock (); nr_pixblock_setup_fast (pb, item->background_pb->mode, item->background_pb->area.x0, item->background_pb->area.y0, item->background_pb->area.x1, item->background_pb->area.y1, true); if (pb->size != NR_PIXBLOCK_SIZE_TINY && pb->data.px == NULL) // allocation failed return NULL; } else if (item->parent) { pb = nr_arena_item_get_background (item->parent, depth + 1); } else return NULL; if (depth > 0) nr_blit_pixblock_pixblock (pb, item->background_pb); return pb; } /* Helpers */ NRArenaItem * nr_arena_item_attach (NRArenaItem *parent, NRArenaItem *child, NRArenaItem *prev, NRArenaItem *next) { nr_return_val_if_fail (parent != NULL, NULL); nr_return_val_if_fail (NR_IS_ARENA_ITEM (parent), NULL); nr_return_val_if_fail (child != NULL, NULL); nr_return_val_if_fail (NR_IS_ARENA_ITEM (child), NULL); nr_return_val_if_fail (child->parent == NULL, NULL); nr_return_val_if_fail (child->prev == NULL, NULL); nr_return_val_if_fail (child->next == NULL, NULL); nr_return_val_if_fail (!prev || NR_IS_ARENA_ITEM (prev), NULL); nr_return_val_if_fail (!prev || (prev->parent == parent), NULL); nr_return_val_if_fail (!prev || (prev->next == next), NULL); nr_return_val_if_fail (!next || NR_IS_ARENA_ITEM (next), NULL); nr_return_val_if_fail (!next || (next->parent == parent), NULL); nr_return_val_if_fail (!next || (next->prev == prev), NULL); child->parent = parent; child->prev = prev; child->next = next; if (prev) prev->next = child; if (next) next->prev = child; return child; } NRArenaItem * nr_arena_item_detach (NRArenaItem *parent, NRArenaItem *child) { nr_return_val_if_fail (parent != NULL, NULL); nr_return_val_if_fail (NR_IS_ARENA_ITEM (parent), NULL); nr_return_val_if_fail (child != NULL, NULL); nr_return_val_if_fail (NR_IS_ARENA_ITEM (child), NULL); nr_return_val_if_fail (child->parent == parent, NULL); NRArenaItem *prev = child->prev; NRArenaItem *next = child->next; child->parent = NULL; child->prev = NULL; child->next = NULL; if (prev) prev->next = next; if (next) next->prev = prev; return next; } /* Local Variables: mode:c++ c-file-style:"stroustrup" c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) indent-tabs-mode:nil fill-column:99 End: */ // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :