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void sp_item_invoke_bbox_full ( SPItem const *  item,
NRRect *  bbox,
NR::Matrix const &  transform,
unsigned const   flags,
unsigned const   clear 

Calls item's subclass' bounding box method; clips it by the bbox of clippath, if any; and unions the resulting bbox with bbox. If clear is true, empties bbox first. Passes the transform and the flags to the actual bbox methods. Note that many of subclasses (e.g. groups, clones), in turn, call this function in their bbox methods.

Definition at line 730 of file sp-item.cpp.

References SPItem::clip_ref.

    g_assert(item != NULL);
    g_assert(bbox != NULL);

    if (clear) {
        bbox->x0 = bbox->y0 = 1e18;
        bbox->x1 = bbox->y1 = -1e18;

    NRRect this_bbox;
    this_bbox.x0 = this_bbox.y0 = 1e18;
    this_bbox.x1 = this_bbox.y1 = -1e18;

    // call the subclass method
    if (((SPItemClass *) G_OBJECT_GET_CLASS(item))->bbox) {
        ((SPItemClass *) G_OBJECT_GET_CLASS(item))->bbox(item, &this_bbox, transform, flags);

    // crop the bbox by clip path, if any
    if (item->clip_ref->getObject()) {
        NRRect b;
        sp_clippath_get_bbox(SP_CLIPPATH(item->clip_ref->getObject()), &b, transform, flags);
        nr_rect_d_intersect (&this_bbox, &this_bbox, &b);

    // if non-empty (with some tolerance - ?) union this_bbox with the bbox we've got passed
    if ( fabs(this_bbox.x1-this_bbox.x0) > -0.00001 && fabs(this_bbox.y1-this_bbox.y0) > -0.00001 ) {
        nr_rect_d_union (bbox, bbox, &this_bbox);

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